Class / Patent application number | Description | Number of patent applications / Date published |
343895000 | Spiral or helical type | 84 |
20080218430 | Dielectrically-loaded antenna - A dielectrically-loaded multifilar helical antenna has a ceramic cylindrical core and, on the core outer surface, coextensive generally helical conductors arranged in an opposing configuration. Located on an end surface of the core is a feed connection nodes and a connection structure connecting the helical conductors to the feed connection nodes. The connection structure comprises, as a conductive coating of the core end surface, conductive paths linking a respective helical conductor and a respective feed connection node, the connection structure further comprising a series reactive link in one conductive path and a shunt reactive link interconnecting the feed connection nodes, one of the reactive links being inductive and the other being capacitive to form a matching network. | 09-11-2008 |
20080224945 | ANTENNA APPARATUS - An antenna apparatus includes a substrate having a GND pattern land and an electric power feed pattern land on a same surface, an outer element extending away from the land in a spiral shape, and an inner element extending along an axis of the outer element in a spiral shape with a space interposed between itself and the outer element. The outer element and the inner element of the antenna apparatus respectively serve as one of a signal line and a GND line, and are supported by a retainer member to have predetermined relationship on a land formation surface. The retainer member is made of dielectric body, and the two elements respectively have a surface mount portion at one end that is to be fixed onto the substrate with electrical connection to corresponding lands. The surface mount portions are formed substantially parallel to the land formation surface. | 09-18-2008 |
20080224946 | Chip Antenna - The present invention relates in general, to a chip antenna and, more particularly, to a dual-band small-sized chip antenna, in which a first antenna element, including a plurality of coil members, is coupled with a second antenna element, having a plurality of circuit patterns, in a zigzag fashion, thus forming resonance frequencies, and relates to a multi-band chip antenna fed with current from external part wherein the third antenna element having coil formed in helical form and the fourth antenna formed parallel with the third antenna element and in helical form are connected to the fifth antenna having a plurality of circuit pattern on the layered-substrate, and relates to chip antenna using multi-layered radiator to generate the mutual coupling of two radiator by placing non-feeding radiation element having fixed pattern between the radiator for performing the radiation of the low frequency band and the radiator for performing the radiation of the high frequency band and to have wide band characteristic by forming multiple current path to radiator. | 09-18-2008 |
20080231541 | Circularly Polarized Antenna and Radar Device Using the Same - A circularly polarized antenna has a dielectric substrate, a ground conductor which is piled up one surface side of the dielectric substrate, a circularly polarized type of antenna element formed on an opposite surface of the dielectric substrate, a plurality of metal posts whose respective one end sides are connected to the ground conductor and penetrate the dielectric substrate along a thickness direction thereof, and whose respective other sides extend up to the opposite surface of the dielectric substrate, the plurality of metal posts configuring a cavity by being provided at predetermined intervals so as to surround the antenna element, and a conducting rim which short-circuits the respective other end sides of the plurality of metal posts along an array direction thereof, and is provided so as to extend by a predetermined distance in a direction of the antenna element at the side of the opposite surface of the dielectric substrate. With the circularly polarized antenna, a radiation characteristic of the antenna can be made to be a desired characteristic by preventing a surface wave from being generated by means of the cavity and the conducting rim, and a frequency characteristic of the antenna gain can be made to have a sharp notch within the RR prohibited band by utilizing a resonance of the cavity. Accordingly, the circularly polarized antenna is effective for reducing radio interference with the EESS or radio astronomical services. | 09-25-2008 |
20080231542 | Multi-frequency antenna - A portable electronic device with function of receiving and radiating radio frequency (RF) signal and a multi-frequency antenna thereof are disclosed. The portable electronic device comprises a RF module and a multi-frequency antenna connecting to the RF module. The multi-frequency antenna comprises a helix element and a coaxial cable disposed within the helix element. The helix element comprises a first helix portion and a second helix portion adjacent to each other, and the coaxial cable comprises a grounding portion and a radiating portion. The first helix portion covers the grounding portion, and the radiating portion is disposed within the second helix portion separated with each other. | 09-25-2008 |
20080266203 | Cooled helical antenna for microwave ablation - A microwave antenna assembly including an elongated cooling jacket having proximal and distal ends and an inner lumen defined therebetween and a helical microwave antenna member disposed within at least a portion of the elongated cooling jacket and having an inner and outer conductor, the inner conductor disposed within the outer conductor, wherein at least a portion of the inner conductor extends distally from the outer conductor and forms at least one loop; and wherein the inner conductor is configured to deliver microwave energy. | 10-30-2008 |
20080272980 | Double Spiral Antenna - An antenna comprises a first antenna element, which has a first helix, and a second antenna element, which has a second helix. The first and the second antenna elements each have a feed point at an outer end of the corresponding helix and an open end at an inner end of the corresponding helix. A symmetrical helix antenna according to the invention can be integrated in a comparatively simple manner in an existing system, for example in a hearing aid. By integrating the antenna in a plastic housing, the antenna cannot be seen at all from the outside. The antenna is comparatively small in relation to conventional antennas. | 11-06-2008 |
20080272981 | Low Profile Helical Planar Radio Antenna with Plural Conductors - A low profile, compact planar antenna having an approximately flat, dual helical or helix shape is affixed to a supporting substrate. The resonant frequency of the device is determined by parameters including and not limited to length, width, and pitch angle of the helix. An additional helical element is added to induce a second resonant frequency and increase bandwidth. The antenna has an omni-directional radiation pattern, is highly efficient, and is provided in a compact profile suitable for use in a small battery operated device, such as water, gas or electricity meters as well as industrial sensors and security devices. | 11-06-2008 |
20080284673 | HYBRID ANTENNA INCLUDING SPIRAL ANTENNA AND PERIODIC ARRAY, AND ASSOCIATED METHODS - The hybrid antenna includes a spiral antenna, e.g. a log spiral antenna, and a patch array layer adjacent to the spiral antenna and including a passive periodic patch array of conductive patch elements. A conductive ground plane may be adjacent to the patch array layer, and a dielectric layer may be between the conductive ground plane and the patch array. The spiral antenna may include an upper antenna arm, a lower antenna arm and a dielectric sheet therebetween. Each of the upper and lower antenna arms may be a printed planar conductive trace that is wider at a distal end thereof with respect to a center of the log spiral antenna. The patch or periodic array layer operates in conjunction with the ground plane to couple energy into the spiral antenna and thereby improve low frequency antenna efficiency while maintaining electrically small dimensions. | 11-20-2008 |
20080303743 | Bent monopole antenna - Provided is a bent monopole antenna. The bent monopole antenna includes a printed circuit board, an RF module, a feed line, and a main radiation pattern part and a sub-radiation pattern part. The RF module is installed the printed circuit board to generate an electrical signal. The feed line is connected to the RF module to deliver the electrical signal. The main radiation patter part and the sub-radiation pattern part serve as a radiation pattern part connected to the feed line to generate an electromagnetic field (electromagnetic waves) using electrical signals applied thereto. The main radiation pattern part has a spiral (helical) pattern passing through the printed circuit board through a via. | 12-11-2008 |
20090015512 | Spiral Coil Loaded Short Wire Antenna - A antenna ( | 01-15-2009 |
20090021449 | Broadband land mobile antenna - There is provided a monopole antenna including a helical radiating element including a first longitudinal portion having a first winding pitch and a second longitudinal portion having a second winding pitch and a cylindrical radiating element generally coaxial with the helical radiating element and extending along at least most of the first longitudinal portion. | 01-22-2009 |
20090033583 | SUBMINIATURE INTERNAL ANTENNA - Disclosed herein is a subminiature internal antenna, which exhibits a multi-band characteristic. The internal antenna includes a radiator electrically coupled at one end thereof to a feed element of a communication device and formed in a spiral shape as a whole. The radiator is disposed in such a manner as to extend at the other end thereof outwardly from the spiral shape. According to the present invention, the electromagnetic coupling is achieved in the radiator of the internal antenna and the other end of the radiator is disposed outwardly from the spiral shape so that the radiation interference is reduced to thereby obtain the multi-band characteristic. | 02-05-2009 |
20090115685 | Dual band helical antenna with wide bandwidth - A dual band helical antenna with wide bandwidth includes a straight section and a helical tail section having a first and a second coil length, respectively. The straight section has a signal feed point located at a lower end thereof being connected to a signal source for feeding in an antenna signal. The first coil length determines a high-frequency resonant frequency of the dual band helical antenna, and a total length of the first and the second coil length determines a low-frequency resonant frequency of the dual band helical antenna. The straight section includes a diametrically expanded section to increase a high-frequency bandwidth of the dual band helical antenna. | 05-07-2009 |
20090146905 | ANTENNA AND RADIO COMMUNICATION APPARATUS - A feeding radiation electrode and a non-feeding radiation electrode are provided extending from a front side surface to top surface of a dielectric base. In the feeding radiation electrode, a slit that extends from a feeding end in an inward direction is formed, and, in the non-feeding radiation electrode, a slit that extends from a ground end in an inward direction is formed. In addition, on the non-feeding radiation electrode, a branch electrode is formed so as to extend toward the side of the feeding radiation electrode. With this configuration, gain is obtained in two frequency bands by using a multi-resonance of fundamental wave resonances and harmonic resonances generated by the feeding radiation electrode and the non-feeding radiation electrode, and a good return loss characteristic caused by coupling of harmonic resonances is provided. In other embodiments, the feeding and non-feeding radiation electrodes may be formed on a flat substrate, or directly on a circuit board. | 06-11-2009 |
20090167630 | Dielectrically-Loaded Antenna - A dielectrically loaded multifilar helical antenna having an operating frequency in excess of 200 MHz has an electrically insulative core with a relative dielectric constant greater than 5 occupying the major part of the interior volume defined by a three dimensional antenna element structure having, in one embodiment, eight coextensive helical tracks and, in another embodiment, six such tracks. The antennas are backfire or endfire antennas, all helical elements being phased so as to contribute to a circular polarisation resonance at the operating frequency. | 07-02-2009 |
20090174623 | COMPACT BROADBAND ANTENNA - The invention relates to an antenna (ANT) comprising a radiating element (ELR) mounted above a substantially flat reflector. The radiating element (ELR) is of the broadband type and substantially flat. The reflector (SHI) has a metal periodic network (RS) of regular patterns in two dimensions, and a ground plane (PM) formed by the bottom face of the surface of the high impedance type. Each pattern of the periodic network (RS) is respectively connected to the ground plane (PM). The antenna having a thickness of the order of 1/13 | 07-09-2009 |
20090195478 | Low-Profile Antenna - An antenna includes a dielectric substrate, feeding and grounding elements, a base element, a radiating element, and an interconnecting element. The feeding and grounding elements are formed on the dielectric substrate. The base element is mounted on the dielectric substrate such that the base element is in electrical contact with the feeding and grounding elements. The radiating element is spaced apart from the dielectric substrate. The interconnecting element interconnects the base element and the radiating element. | 08-06-2009 |
20090243956 | ENHANCED IMPLANTABLE HELICAL ANTENNA SYSTEM AND METHOD - As described herein vascular anchoring systems are used to position an implant in a vascular area such as a bifurcated vasculature with relatively high fluid flow, for instance, in an area of a pulmonary artery with associated left and right pulmonary arteries. Implementations include an anchoring trunk member having a first anchoring trunk section and a second anchoring trunk section. Further implementations include a first anchoring branch member extending from the anchoring trunk member. Still further implementations include a second anchoring branch member extending from the anchoring trunk member. | 10-01-2009 |
20090273537 | FM CHIP ANTENNA - A frequency modulation (FM) chip antenna having a microwave base board printed thereon with a helical radiation metallic member of a single layer or multiple layers, the microwave base board is provided with a feeding point and a grounding point to receive energy in the mode of electromagnetic wave coupling. | 11-05-2009 |
20090284441 | Multiple Frequency Antenna - A helical element, which is operated in the frequency band of FM broadcast, is wound around the outer periphery of a rod-shaped support member | 11-19-2009 |
20090303152 | ANTENNA APPARATUS - An antenna apparatus includes an antenna and a support member. The antenna has (i) an outer element, which has a spiral section prolonged spirally in an axial direction, and (ii) an inner element, which has a spiral section prolonged spirally in the axial direction and is surrounded with an interval space by the outer element. The antenna is a terminal open type in which one of the two elements is used as a signal line and the other is used as a GND line. The support member includes a dielectric member and contacts each of the spiral sections of the outer and inner elements while supporting the outer and inner elements in a predetermined positional relationship. Further, the number of turns of the spiral section in the inner element is equal to or less than the number of turns of the spiral section in the outer element. | 12-10-2009 |
20090303153 | ANTENNA APPARATUS - An antenna apparatus includes an antenna and support member. The antenna has a double spiral structure to include (i) an outer element, which has a spiral section prolonged spirally in an axial direction, and (ii) an inner element, which has a spiral section prolonged spirally in the axial direction and is surrounded with an interval space by the outer element. The support member is made of dielectrics and holds the two elements in a predetermined positional relationship by contacting the spiral sections of the two elements. The support member contacts the spiral sections wholly along the prolonged direction. One of the two elements is connected with a high frequency wave source at one end portion along the axial direction while the other is connected with the high frequency wave source at the other end portion along the axial direction. The antenna functions as a terminal short circuit type. | 12-10-2009 |
20090315806 | DIELECTRICALLY LOADED ANTENNA - A dielectrically loaded multifilar antenna has an electrically insulative solid core bearing an antenna element structure having four pairs of substantially helical radiating elements spaced apart around a central axis of the antenna. Each pair of oppositely located antenna elements forms part of a conductive loop having an effective electrical length in the region of N guide wavelengths at the operating frequency, where N is an integer and is at least 2. Typically, each helical element executes substantially a full turn around the axis on the outer surface of the core. The antenna offers an improved gain-bandwidth product compared with typical prior dielectrically loaded multifilar helical antennas, and a 3dB beamwidth of at least 90° for circularly polarized radiation. | 12-24-2009 |
20100013735 | DUAL FREQUENCY ANTENNA SYSTEM - A dual-frequency conformal multi-filiar helical antenna system ( | 01-21-2010 |
20100013736 | DUAL-BAND ANTENNA - A structure of a dual-band antenna serves as an antenna for use with a mobile communication device and is operable with radio frequency signals in two different bands, and features low costs and small product size. The antenna includes a first radiating element, a circuit board, and a coaxial feed. The first radiating element is a long helical conductor for operation in a first one of the bands. The circuit board is arranged inside the helical conductor of the first radiating element and includes a second radiating element operable in a second one of the bands. | 01-21-2010 |
20100019987 | Normal Mode Helical Antenna - A normal mode helical antenna comprises a coil made by winding a first conductor helically, and a second conductor shorter than the first conductor having a feeding point at the middle thereof. The second conductor is disposed outside of the coil at a center part in a longitudinal direction thereof along the first conductor. Both ends of the second conductor are connected to the first conductor of the coil. | 01-28-2010 |
20100026605 | F-INVERTED COMPACT ANTENNA FOR WIRELESS SENSOR NETWORKS AND MANUFACTURING METHOD - An F-inverted compact antenna for ultra-low volume Wireless Sensor Networks is developed with a volume of 0.024λ×0.06λ×0.076λ, ground plane included, where λ is a resonating frequency of the antenna. The radiation efficiency attained is 48.53% and the peak gain is −1.38 dB. The antenna is easily scaled to higher operating frequencies up to 2500 MHz bands with comparable performance. The antenna successfully transmits and receives signals with tolerable errors. It includes a standard PCB board with dielectric block thereon and helically contoured antenna wound from a copper wire attached to the dielectric block and oriented with the helix axis parallel to the PCB. The antenna demonstrates omnidirectional radiation patterns and is highly integratable with WSN, specifically in Smart Dust sensors. The antenna balances the trade offs between performance and overall size and may be manufactured with the use of milling technique and laser cutters. | 02-04-2010 |
20100073259 | Antenna device - An antenna device includes two antenna members each having a support member disposed on a transmission facility, and two helical antenna elements disposed on the support members and arranged in different directions or opposite to each other and having polar directions preferably arranged perpendicular to each other for facilitating a throughput or signal transmitting effect and for increasing the isolation. The helical antenna elements each may include a terminal electrically coupled to a cable, and each may include two or more helical conductors and one or more non-conducting spaces disposed between the helical conductors. | 03-25-2010 |
20100109970 | Folded antenna structures for portable devices - Methods and systems are disclosed for folded antenna structures that allow for receive and/or transmit antennas to be used for portable or other devices. The folded antennas described herein can be configured, for example, to fit the design constraints and considerations for portable devices. The folded antenna structures can be implemented using relatively flat flexible printed circuits (e.g., flex circuits) and can be placed in available spaces within the portable device, such as above or behind a battery, while still providing good performance characteristics. Still further, the folded antenna structures can be implemented on a printed circuit board and/or as part of plastic materials and pieces included as part of a portable device. | 05-06-2010 |
20100127952 | DUAL HELIX, DUAL PITCH ANTENNA FOR WIDE FREQUENCY BANDWIDTH - An antenna to increase VHF bandwidth comprises an inner and an outer helical element separated by a comb-like spacer. The inner helical element has a dual pitch and is fed a radio frequency driving signal while the outer helical element has a uniform pitch and is coupled to ground. The dual pitch inner helical element coupled with the uniform pitch outer helical element provides an increase in bandwidth without a corresponding increase in the length of antenna, and, in fact, allows for a shorter antenna for communication devices than is currently available, without loss of signal strength or quality. | 05-27-2010 |
20100156752 | HELIX ANTENNA - The invention relates to a helix antenna comprising a plurality of radiating elements wound helically in an axisymmetric shape ( | 06-24-2010 |
20100156753 | MULTI-FREQUENCY ANTENNA - A portable electronic device with function of receiving and radiating radio frequency (RF) signal and a multi-frequency antenna thereof are disclosed. The portable electronic device comprises a RF module and a multi-frequency antenna connecting to the RF module. The multi-frequency antenna comprises a helix element and a coaxial cable disposed within the helix element. The helix element comprises a first helix portion and a second helix portion adjacent to each other, and the coaxial cable comprises a grounding portion and a radiating portion. The first helix portion covers the grounding portion, and the radiating portion is disposed within the second helix portion separated with each other. | 06-24-2010 |
20100164834 | Dielectrically loaded antenna and an antenna assembly - A dielectrically loaded quadrifilar helical antenna has four quarter turn helical elements centred on a common axis. Each helical element is metallised on the outer cylindrical surface of a solid dielectric core and each has a feed end and a linked end, the linked ends being connected together by a linking conductor encircling the core. At an operating frequency of the antenna the helical elements and the linking conductor together form two conductive loops each having an electrical length in the region of (2n−1)/2 times the wavelength, where n is an integer. Such an antenna tends to present a source impedance of at least 500 ohms to receiver circuitry to which it is connected. The invention includes an antenna assembly including a dielectrically antenna and a receiver having a radio frequency front-end stage with a differential input coupled to the feed ends of the helical elements. | 07-01-2010 |
20100177014 | STRUCTURE OF A SQUARE QUADRIFILAR HELICAL ANTENNA - Disclosed herein is the structure of a Square Quadrifilar Helical antenna (S-QHA). The structure of the S-QHA includes a square column, four radiation elements, and a feed network. The four radiation elements are formed on the square column. The feed network is disposed at the top or bottom of the square column, and feeds signals to the radiation elements at a phase difference of 90 degrees in a clockwise or counterclockwise direction. As a result, the S-QHA according to the present invention can receive circularly polarized signals. | 07-15-2010 |
20100177015 | Antenna and an antenna feed structure - A dielectrically-loaded helical antenna has a cylindrical ceramic core bearing metallised helical antenna elements which are coupled to a coaxial feeder structure passing axially through the core. Secured to the end face of the core is an impedance matching section in the form of a laminate board. The matching section embodies a shunt capacitance and a series inductance. | 07-15-2010 |
20100194665 | ANTENNA OF THE HELIX TYPE HAVING RADIATING STRANDS WITH A SINUSOIDAL PATTERN AND ASSOCIATED MANUFACTURING PROCESS - The invention relates to an antenna of the helix type, comprising a plurality of radiating strands wound in a helix in an axisymmetric form ( | 08-05-2010 |
20100207839 | Method for Producing a Transmission Module and Transmission Module - The invention relates to a method for producing a transmission module ( | 08-19-2010 |
20100231480 | Dielectrically-Loaded Antenna - A dual-band dielectrically loaded helical antenna for circularly polarised signals has two groups of helical antenna elements. In each group there are at least four such elements and they are connected at their distal ends to a respective feed coupling node and at their proximal ends to a common linking conductor. Each group includes pairs of neighbouring such antenna elements, each pair having one electrically short element and one electrically long element, and the arrangement of the elements is such that in each group the number of pairs in which, in a given direction around the core, the short element precedes the long element is equal to the number of pairs in which, in the same direction, the long element precedes the short element. | 09-16-2010 |
20100283709 | Structure Having An Antenna Incorporated Therein - Structures having an antenna incorporated therein are provided. Each structure may comprise one or more strips of flexible sheet material wrapped about an axis and secured together. The antenna may comprise an electrically conductive material secured to one or more of the strips in a pattern forming a closed loop except for a break in the loop defining a plurality of contracts for connection to an electrical device, which may be an RFID chip. The antenna may comprise a pair of spaced tracks with a connection therebetween, which may take the form of an intersection of the tracks or a connector. The antenna may extend for a substantial portion of the axial length of the tubular structure and may also extend helically around the tubular structure. Methods of manufacturing structures are also provided. | 11-11-2010 |
20100289719 | Antenna - An antenna includes a substrate having a first layer, a second layer, a third layer and a fourth layer, and an antenna unit having a first pattern being of a helix-shaped and printed on the first layer, a second pattern being of a meandering shaped and printed on the second layer, a third pattern being of a meandering shaped and printed on a third layer, and a fourth pattern being of a helix-shaped and printed on the fourth layer. The first pattern, the second pattern, the third pattern and the fourth pattern are of a serial connection. The free end of the first pattern connects a feeding point. The free end of the fourth pattern connects a grounding point. Thus, the antenna has advantages of compact size and low cost, due to the antenna unit printed on the substrate and the pattern of the antenna unit. | 11-18-2010 |
20100309091 | BROAD BAND DIPOLE ANTENNA - An antenna ( | 12-09-2010 |
20110001684 | MULTIRESONANCE HELIX ANTENNA - A helix antenna for satellite connections of mobile devices is to be fed from above, and all its radiators are side by side on a same geometric cylindrical surface. The antenna has at least two resonances. In the case of two-resonance every second radiator resonates at a lower frequency and the rest of the radiators at another, higher frequency, the frequency difference being based on the difference in the physical length of the radiators. One conductor of the feed line of the antenna is connected directly to one half of the radiators and the other conductor to the other half of the radiators. No separate feed circuit for the phase shifts is required in an antenna with plurality of helix radiators, because the phasing can be implemented by the positioning of the radiators and the fine tuning of their length. The antenna structure is simple, and case its production costs are relatively low. | 01-06-2011 |
20110063188 | ANTENNA - An antennacomprises a first conductor, a second conductor and a third conductor each of which has a certain length and does not intersect with each other, wherein the third conductor is positioned between the first conductor and the second conductor, and an end of the first conductor electrically connects to an end of the second conductor, further forms a connection point connecting to the ground of radio frequency signal, an end of the third conductor which is adjacent to the connection point connects to a radio frequency signal line, the length of the first conductor is greater than that of the second conductor. The antenna of present invention is able to be mass-produced and has the advantages of small size, low cost, and large bandwidth. | 03-17-2011 |
20110215986 | Antenna Assembly - An antenna assembly includes a combination of a dielectrically loaded antenna unit for operation at a frequency in excess of 200 MHz and a connector secured to the antenna unit, wherein the antenna unit has a side surface and end surfaces and has a solid insulative dielectric core and an antenna element structure having a plurality of conductive antenna elements arranged on or adjacent the outer surface of the core, and wherein the connector includes an inner connection member that is coupled to at least one of the antenna elements and that projects from a central portion of one of the end surfaces of the antenna unit, and a hollow outer connection member that encircles the inner connection member and has an unattached annular edge and an attached annular edge, the attached annular edge being bonded to the one end surface of the antenna unit. | 09-08-2011 |
20110221653 | META MATERIAL ANTENNA USING COUPLING IN HELICAL STRUCTURE - There is provided an antenna implementing a first 0-th order resonant frequency using a first radiator to which power is fed through parallel inductors of helical structures, and implementing a second 0-th order resonant frequency using a second radiator to which power is couple-fed through radiation elements put into the helical structures. | 09-15-2011 |
20110234470 | ANTENNA STRUCTURE - An antenna structure includes a positive feeding point, a negative feeding point, a radiation element, and a grounding element. The radiation element includes a first radiator and a second radiator. The first radiator has a first end coupled to the positive feeding point, and has a plurality of first side edges. The second radiator has a first end coupled to the negative feeding point, and has a plurality of second side edges. Herein the second radiator at least partially surrounds the first radiator, such that there are a plurality of predetermined gaps existed in between the plurality of first side edges of the first radiator and the plurality of second side edges of the second radiator to form coupling effects. The grounding element is coupled to the second radiator. | 09-29-2011 |
20110234471 | SPIRAL ANTENNA - According to one embodiment, a spiral antenna includes an antenna element, a cavity, and a radio wave absorber. The spiral antenna is formed into a spiral shape on a dielectric substrate. The cavity is formed to have a space with the antenna element. The radio wave absorber is placed to cover a terminal end portion of the spiral. | 09-29-2011 |
20110279348 | ANTENNA DEVICE - An antenna device includes an antenna element having an external form shaped into a substantially rectangular-shaped planar spiral coil and a switch provided to the antenna element. | 11-17-2011 |
20110298688 | RECONFIGURABLE AXIAL-MODE HELICAL ANTENNA - Novel reconfigurable antennas are provided which may be used to accommodate the requirements for wideband multi-standard handheld communication devices. It is shown that using a shape memory alloy spring actuator, the height of a helical antenna and therefore the pitch spacing and angle can be varied. This can in turn tune the far-field radiation pattern and gain of the antenna dynamically to adjust to new operating conditions. The radiation pattern can further be directed using a two-helix array. Finally, a helical antenna embodiment is implemented and measured using a shape memory alloy actuator. Measurement results confirm that while keeping the centre frequency constant, gain tunability can be attained using this structure. | 12-08-2011 |
20120007791 | Antenna Fabrication with Three-Dimensional Contoured Substrates - Disclosed herein is a method of fabricating an antenna in which a flexible stamp is formed from a first wafer, the first wafer transferring a pattern to the flexible stamp, in which an antenna substrate is shaped into a three-dimensional contour with a second mold, in which the flexible stamp is positioned in the second mold to deform the flexible stamp into the three-dimensional contour, and in which a metallic layer on the flexible stamp is cold welded to create a set of antenna traces on the antenna substrate in accordance with the pattern. The antenna traces may then be electroplated. | 01-12-2012 |
20120026066 | Antenna - An antenna for circularly polarised radiation at an operating frequency in excess of 200 MHz has a substrate in the form of a disc-shaped dielectric tile with parallel planar surfaces. The upper surface bears a conductive pattern including a resonant ring and a number of open-circuit radiating elements each having an electrical length of a quarterwave at the resonant frequency of the ring. The radiating elements extend outwardly from the ring and are joined to the ring at uniformly spaced locations. Each radiating element extends in a direction which has both a radial component and a tangential component and follows a generally spiral path. A pair of central feed nodes are coupled to the inside of the ring by a pair of feed tracks lying on a diameter. Dual-frequency and dual-polarisation variants are also disclosed. | 02-02-2012 |
20120032871 | Antenna and an antenna feed structure - A dielectrically-loaded helical antenna has a cylindrical ceramic core bearing metallised helical antenna elements which are coupled to a coaxial feeder structure passing axially through the core. Secured to the end face of the core is an impedance matching section in the form of a laminate board. The matching section embodies a shunt capacitance and a series inductance. | 02-09-2012 |
20120068912 | INVERTED CONICAL SINUOUS ANTENNA ABOVE A GROUND PLANE - A wideband antenna is disclosed. The wideband antenna comprises an inverted cone, at least one sinuous arm coupled to the cone, and a ground plane behind the apex of the cone. The sinuous arm comprises at least two active resonators. | 03-22-2012 |
20120075165 | DUAL FREQUENCY ANTENNA WITH WIDE FREQUENCY - A dual frequency antenna with wide frequency includes an inner radiator in helical structure, which is electrically connected with a host by a feeding point of the host, and an outer radiator in helical structure in which the inner radiator is packed. The inner radiator includes a first radiating unit located at the lower part for generating resonance and a second radiating unit located at the upper part. The resonant frequency of the second radiating unit is higher than that of the first radiating part; the height of the helical structure of the outer radiator is less than the total height of the inner radiator. The performance of dual frequency antenna can better focus on the upper hemisphere, and the bandwidth of the dual frequency antenna is wider in the ultra high frequency (UHF) frequency band. | 03-29-2012 |
20120092230 | ON-CHIP HELIX ANTENNA - A rectangular helix antenna in an integrated circuit includes upper electrodes disposed in a first metal layer, lower electrodes disposed in a second metal layer, and side electrodes connecting the upper electrodes with the lower electrodes, respectively. The upper electrodes are disposed at an angle with respect to the lower electrodes. The upper electrodes, the lower electrodes, and the side electrodes form one continuous electrode spiraling around an inner shape of a rectangular bar. A micro-electromechanical system (MEMS) helix antenna has a similar structure to the rectangular helix antenna, but can have an inner shape of a bar. | 04-19-2012 |
20120119974 | DUAL FREQUENCY ANTENNA - A dual frequency antenna is provided, which includes a helical radiator electrically connected to a main body via a feed point of the main body, a first radiator for generating resonance is formed on the lower portion of said radiator, a second radiator for generating resonance is formed on the upper portion of said radiator, wherein the resonance frequency of the second radiator is higher than that of the first radiator, and the helical pitch of the second radiator is larger than that of the first radiator. The dual frequency antenna easily enables tuning in a whole UHF frequency band, and work performance of an upper semi-sphere of the dual frequency antenna is improved in a GPS frequency band. | 05-17-2012 |
20120146880 | Self-Deploying Helical Antenna - A compressible and deployable helical antenna ( | 06-14-2012 |
20120154251 | DIELECTRIC LOADED ELLIPTICAL HELIX ANTENNA - An integrated wire elliptical helical antenna with novel cuboids dielectric resonator loading for circularly polarized wave transmission and reception is presented. The antenna is designed to operate in the centre frequency of 915 MHz and it is utilized in RFID systems as a base station antenna. The elliptical structure is formed by steel wire and supporting acrylic plastic. The cuboids dielectric resonator is loaded at the inner surface of the proposed antenna. | 06-21-2012 |
20120154252 | ANTENNA - An antenna including first and second printed wiring boards and a plurality of linking conductors. The first and second printed wiring boards each has a respective plurality of rectilinear printed wiring patterns arranged in parallel at a specified interval, and respective through holes formed on both ends of each of the respective rectilinear printed wiring patterns. The plurality of linking conductors are configured so that both ends of the conductors are linked to the through holes that are formed in the first and second printed wiring boards so that the first printed wiring board and the second printed wiring board are disposed opposite each other, and so that the plurality of rectilinear printed wiring patterns formed on the first printed wiring board and the plurality of rectilinear printed wiring patterns formed on the second printed wiring board are conductively connected to each other in a helix. | 06-21-2012 |
20120229363 | DIRECTIONAL PLANAR SPIRAL ANTENNA - Directional wide band antenna that may be utilized to enhance cell phone coverage within a building, and/or for signals intelligence collection (SIGINT). Includes a spiral antenna with feed-point configured to transfer energy to/from the antenna. Includes an energy absorbent backing and an energy absorbent siding coupled with the spiral antenna. Includes a cavity behind the log-spiral slot antenna and in front of the energy absorbent backing. Includes a cable connector coupled to a tapered microstrip line coupled to the feed-point wherein the tapered microstrip line is configured to transform the input impedance to the antenna impedance. Housed in a container configured to hold the above listed components. Energy absorbent siding, cavity and energy absorbent backing greatly reduces back lobes. Another embodiment has log-spiral shaped slots at an outer portion of the log-spiral slot antenna overlap with the energy absorbent siding and wherein the feed-point overlaps the cavity. | 09-13-2012 |
20120287016 | Antenna and a Method of Manufacture Thereof - A method of manufacturing a dielectrically loaded antenna having an operating frequency in excess of 200 MHz, the antenna having an electrically insulative core, the method including steps of: forming a first patterned layer of conductive material having a plurality of inner conductive tracks on at least one surface of the core of the antenna; depositing a layer of insulative material over at least a portion of the first layer of conductive material; and forming a second patterned layer of conductive material having a plurality of outer conductive tracks, at least partially overlapping the inner conductive tracks. | 11-15-2012 |
20120299798 | Dielectrically Loaded Antenna - A dielectrically loaded antenna for operation at first and second frequencies above 200 MHz with circularly polarized radiation includes an electrically insulative dielectric core of solid material having a relative dielectric constant greater than 5, and a three-dimensional antenna element structure linked to a pair of feed coupling nodes. The antenna element structure is divided into a distal section and a proximal section respectively having a first set of elongate conductors on or adjacent a distal part of the core side surface portion and a second set of elongate conductors on or adjacent a proximal part of the core side surface portion, and wherein the first set of conductors is resonant at the first operating frequency and the second set of conductors is resonant at the second operating frequency. | 11-29-2012 |
20130099999 | RADIOFREQUENCY CIRCUIT ASSEMBLY - This disclosure relates to a radiofrequency circuit assembly and a dielectrically-loaded antenna for use in the assembly. The antenna comprises a solid electrically insulative core having a passage therethrough extending from a first core surface portion to a second, oppositely facing core surface portion, and a printed circuit feeder structure secured in the core passage and having exposed antenna mounting projections at opposite respective ends of the passage. The printed circuit board mounting the antenna has a cut-out dimensioned to accommodate the antenna core with the passage extending substantially parallel to the plane of the board. The antenna mounting projections at both ends of the passage engage respective edge portions of the said printed circuit board adjacent the cut-out so that the antenna core is supported by the printed circuit board between spaced-apart mounting locations adjacent the oppositely facing core surface portions. | 04-25-2013 |
20130100000 | Planar Antenna Array and Article of Manufacture Using Same - A planar antenna array and articles of manufacture using the same are disclosed. In one embodiment, close-packed antenna elements, disposed on a substrate, number N where N=3x and x is a positive integer. Each of the close-packed antenna elements includes a substantially continuous photonic transducer arranged as an outwardly expanding generally logarithmic spiral having six turns. Each of the outwardly expanding generally logarithmic spirals may be a golden spiral. As an article of manufacture, the planar antenna array may be incorporated into a chip, such as a cell phone, or an article of clothing, for example. | 04-25-2013 |
20130120220 | ANTENNA DEVICE - An antenna device includes: a feeding rod unit connected to a feeding unit, in which a radio signal is applied to be sent and received to the feeding unit; an end rod unit, disposed at the end of the antenna device, and spaced apart from the feeding rod unit; at least one intermediate rod unit, interposed between the feeding rod unit and the end rod unit; a first helical unit, interposed between the feeding rod unit and the at least one intermediate rod unit; and a second helical unit, interposed between the intermediate rod unit and the end rod unit. | 05-16-2013 |
20130194159 | THREE-DIMENSIONAL SPIRAL ANTENNA AND APPLICATIONS THEREOF - A three-dimensional spiral antenna includes a substrate, a spiral antenna element, and a feed point. The substrate includes a three-dimensional shaped region. The spiral antenna element is supported by and conforms to the three-dimensional shaped region such that the spiral antenna element has an overall shape approximating a three-dimensional shape. The feed point is coupled to a connection point of the spiral antenna element. | 08-01-2013 |
20130214991 | TRANSMITTING AND/OR RECEIVING DEVICE FOR INSTALLATION IN ELASTIC STRUCTURES - An apparatus transmits and/or receives radio waves in the UHF band and is configured for installation in an elastic structure. The apparatus includes at least one electronic component and an antenna embedded in the elastic structure. The antenna is connected to the electronic component and includes at least one filament configured to be plastically deformable and/or elastically deformable. The filament is helically wound to a predetermined antenna length (L) and defines an antenna winding turns density per cm of the antenna length. The antenna length (L) is between 4 cm and 10 cm and the antenna winding turns density lies in a range of 5 to 15 winding turns per cm of the antenna length. | 08-22-2013 |
20140022144 | ANTENNA ASSEMBLY - The present invention relates to an antenna assembly for transmitting and receiving electromagnetic waves. More particularly, this invention relates to a wideband and multiband omnidirectional antenna assembly for sending and receiving radio waves. Specifically, this invention relates to a radiative antenna element formed by way of a single-fed spiraled sheet of conductive material. The conductive material is interlaced with a dielectric material to form the radiative element. The radiative element includes a height of substantially less than ¼ of the characteristic wavelength of the lowest operating frequency. | 01-23-2014 |
20140028528 | SPIRAL ANTENNA - According to one embodiment, a spiral antenna includes at least one spiral arm and a connection portion which connects an end of the spiral arm to an adjacent spiral arm. | 01-30-2014 |
20140049446 | 3D DIPOLE ANTENNA OF SPIRAL SEGMENTS - A three dimensional (3D) dipole antenna system with spiral leg is described used to measure oscillatory electric field strengths. The system relies on spiral dipole leg segments of limited length attached to a cylinder. It is designed to improve the sensitivity to oscillatory electric signals in the range of 0.01 Hz to 10,000 Hz. The antenna system is connected to an object (a survey platform) that is stationary or moving in an area of interest in air, over land, on water or under water. Such antenna system is generally used as part of a prospecting survey system for water, minerals or hydrocarbons. | 02-20-2014 |
20140125552 | ANTENNA AND ANTENNA UNIT INCLUDING SAME - An antenna includes a support body having a rod shape, a first helical antenna element, and a second helical antenna element. The first helical antenna element is wound about the axis of the support body. The second helical antenna element overlaps the first helical antenna element with an insulator provided between the first helical antenna element and the second helical antenna element. The second helical antenna element is wound about the axis in a direction opposite to a direction in which the first helical antenna element is wound. | 05-08-2014 |
20140132479 | SPIRAL ANTENNA FOR DISTRIBUTED WIRELESS COMMUNICATIONS SYSTEMS - An antenna for wireless communication comprises a dielectric substrate having a first side and an opposite second side. A first major arm having a first modified log-spiral spiral pattern is disposed on the first side of the dielectric substrate. A second major arm having a second modified log-spiral pattern is disposed on the second side of the dielectric substrate, wherein the first and second major arms are formed from a conductive material. A connector coupling is disposed at a center of the modified log-spiral patterns, the connector coupling having a first portion coupled to the first major arm and a second portion coupled to the second major arm. The antenna is self-complementary. The antenna can achieve a return loss better than 10 dB over a broadband range. | 05-15-2014 |
20140253410 | MULTI-MODE, MULTI-BAND ANTENNA - A multi-mode, multi-band antenna system for a handheld wireless device includes a Quadrafilar Helix Antenna (QHA) that radiates circularly polarized waves is fed by a co-axial cable. The co-axial cable is also used in combination with the QHA as a monopole antenna. Because of the distinct electromagnetic field patterns of the QHA versus the combination of the QHA and the co-axial cable operating as a monopole antenna, the cross coupling between the two modes is low. In certain embodiments the co-axial cable can itself be formed into a helix in order to reduce the physical length of the antenna system while maintaining an electrical length desired to supported certain frequency bands in the monopole mode. According to certain embodiments a post which also serves to increase the effective electric length of the co-axial cable and thereby support a lower frequency band is provided along the centerline of the QHA. | 09-11-2014 |
20140266975 | Antenna Fabrication with Three-Dimensional Contoured Substrates - An antenna includes a dielectric substrate having a three-dimensional contour, and a set of antenna traces on the dielectric substrate. Each antenna trace spirals around the three-dimensional contour in a helical pattern. Each antenna trace includes a plated metallic layer. | 09-18-2014 |
20150048996 | COMPACT HELICAL ANTENNA WITH A SINUSOIDAL PROFILE MODULATING A FRACTAL PATTERN - The invention concerns a helical antenna comprising a shape of revolution and a plurality of radiating strands helically wound around the shape of revolution, characterised in that each radiating strand is defined by a repetition of a fractal pattern comprising segments formed by a sinusoidal curve. | 02-19-2015 |
20150077308 | BAND-NOTCHED SPIRAL ANTENNA - A band-notched spiral antenna having one or more spiral arms extending from a radially inner end to a radially outer end for transmitting or receiving electromagnetic radiation over a frequency range, and one or more resonance structures positioned adjacent one or more segments of the spiral arm associated with a notch frequency band or bands of the frequency range so as to resonate and suppress the transmission or reception of electromagnetic radiation over said notch frequency band or bands. | 03-19-2015 |
20150097754 | MULTIBAND FREQUENCY ANTENNA - Disclosed is an antenna capable of operating at more than one frequency band. The antenna comprises a first main helix antenna element and a second parasitic helix antenna elements electromagnetically coupled to integrate a single radiofrequency connection structure operating in dual frequency bands. The antenna is designed to be compact and reduce size, weight, and cost, while increasing versatility as compared to equivalent single-band frequency antennas designed using traditional design techniques. | 04-09-2015 |
20150130681 | 3D ANTENNA FOR INTEGRATED CIRCUITS - An antenna comprises a first layer having a first redistribution layer, a feeding line, a ground connection element, and one or more antenna inputs. The antenna also comprises one or more intermediate layers over the first layer. The antenna further comprises a second layer having a second redistribution layer over the one or more intermediate layers. The antenna additionally comprises one or more through vias arranged to communicatively couple the second redistribution layer and the first redistribution layer. The antenna also comprises a short element. The antenna further comprises one or more radiator antennas within the one or more through vias, the one or more radiator antennas being in communication with the one or more antenna inputs by way of the feeding line. | 05-14-2015 |
20150130682 | DUAL-POLARIZED ANTENNA FOR MOBILE COMMUNICATION BASE STATION - Disclosed is a dual polarization-based small antenna for a mobile communication base station. The dual-polarized antenna includes a substrate, a first feed attached to one surface of the substrate, a second feed spaced apart from the first feed and attached to the one surface of the substrate, a radiator located above the first feed and the second feed, and a spiral resonator located between the first feed and the second feed. The dual-polarized antenna effectively provides a broad bandwidth and a high isolation characteristic while having a reduced size, and the spiral resonator allows the isolation characteristic at a certain narrow band range to be effectively enhanced by adjusting of the position, size, and shape of the spiral resonator without affecting the operating frequency of the dual-polarized antenna. | 05-14-2015 |
20150145748 | CIRCULARLY POLARIZED SCALAR IMPEDANCE ARTIFICIAL IMPEDANCE SURFACE ANTENNA - A circularly polarized artificial impedance surface antenna (AISA) includes an impedance modulated substrate having a modulated scalar impedance to a surface wave traversing a top surface of the substrate, wherein the impedance modulation has a plurality of intertwined lines of constant impedance, and wherein each line of constant impedance follows a spiral elliptical path. | 05-28-2015 |
20160020508 | THREE-DIMENSIONAL MULTIPLE SPIRAL ANTENNA AND APPLICATIONS THEREOF - A three-dimensional multiple spiral antenna includes a substrate, a plurality of spiral antenna sections, and a feed point module. The substrate has a three-dimensional shaped region and each spiral antenna section is supported by a corresponding section of the three-dimensional shaped region and conforms to the corresponding section of the three-dimensional shaped region such that, collectively, the spiral antenna sections have an overall shape approximating a three-dimensional shape. The feed point module is coupled to a connection point of at least one of the spiral antenna sections. | 01-21-2016 |
20160141747 | Helix-Loaded Meandered Loxodromic Spiral Antenna - An antenna element having a metal pattern with a three-dimensional profile. The metal pattern is at least one helix-loaded helix-loaded meandered loxodromic spiral. The profile is generally that of a domed top adjoined to a rotationally symmetric body such as a conical section. Typically, the metal antenna pattern is fabricated upon or otherwise supported by a dielectric medium. | 05-19-2016 |
20190148832 | SPIRAL ANTENNA AND RELATED FABRICATION TECHNIQUES | 05-16-2019 |