Patent application number | Description | Published |
20110006814 | POWER STAGE - An power stage has a differential output stage | 01-13-2011 |
20110216818 | VARIABLE DUTY CYCLE GENERATION FOR OUT-PHASING AND PWM POWER AMPLIFIERS - Power reduction in transmitters is very important. One method to realize reduction is to make use of switching power amplifiers (PA) that have a better efficiency. Switching PA concepts are only possible in combination with suitable modulation methods like pulse width modulation (PWM) and out-phasing concepts. However, PWM and out-phasing concepts rely on accurate phase control and duty cycle of the signals. Digitally generation of signals of variable duty cycles and phase is proposed without sacrificing their accuracy. Accordingly, a out-phasing power amplifier arrangement is disclosed, where the generation of the out-phasing angle (θ) and duty cycles (d | 09-08-2011 |
20110254630 | POWER AMPLIFIER PROTECTION - A power amplifier, for example a class-E switching power amplifier, and corresponding method, comprising: a plurality of power transistors ( | 10-20-2011 |
20110260791 | Power Amplifier - A pre-driver for an amplifier comprising a load network in which the following elements are connected in the following order: a resistor-an inductor-a capacitor. Also described are a power amplifier comprising such a pre-driver, a method of fabricating a pre-driver for an amplifier, and a method of performing power amplification. | 10-27-2011 |
20110273234 | RECONFIGURABLE OUTPHASING CHIREIX AMPLIFIERS AND METHODS - Various embodiments relate to a reconfigurable integrated digital Chireix out-phasing power amplifier for use in high power base stations is described and a related method of said design. The power amplifier may include a power transistor circuitry having plurality of power transistors and shunt-series circuitry (L | 11-10-2011 |
20110273236 | POWER CONTROL OF RECONFIGURABLE OUTPHASING CHIREIX AMPLIFIERS AND METHODS - Various embodiments relate to a reconfigurable integrated digital Chireix out-phasing power amplifier for use in high power base stations is described and a related method of said design. The power amplifier may include a power transistor circuitry having plurality of power transistors and shunt-series circuitry (L | 11-10-2011 |
20120069930 | CIRCUIT FOR A TRANSMITTER - A transmitter ( | 03-22-2012 |
20130187713 | POWER AMPLIFIER CIRCUIT AND CONTROL METHOD - A power amplifier circuit uses an output transistor and a cascode transistor. First and second drive circuits apply gate control signals to the two transistors, which rise and fall in synchronism, and this is such that the voltage drop across the cascode transistor is reduced (compared to a constant gate voltage being applied to the output transistor). | 07-25-2013 |
20130285713 | POWER STAGE - A power stage has a differential output stage | 10-31-2013 |
20140077877 | AMPLIFIER CIRCUIT - An amplifier circuit comprising a driver ( | 03-20-2014 |
20140152353 | POWER STAGE - A power stage has a differential output stage | 06-05-2014 |