20140342581 | VERTICAL MOUNT PCB COAXIAL CONNECTOR - A vertical mount PCB coax connector having a unique cavity design. The examples provide a vertical mounted connector with improved electrical performance to transmit a microwave signal to or from a coaxial port to planar printed circuitry. The vertical mount PCB connector includes a threaded housing with a four post flange for attachment to the PCB, a center conductor and a dielectric bead to support the center conductor. The bottom of the flange has a uniquely contoured cavity to provide air space for the electromagnetic field above the planar transmission line. Four posts at the corners of the flange serve as the ground connection from the connector to the substrate ground planes. The open or large cavity under the flange is designed to provide high values of inductive reactance at the high end of the microwave band and typically requires changing the planar geometry to achieve even a narrow band impedance match. This examples described have a reduced diameter cavity around the center conductor which, along with properly positioned via's on the PCB, tend to limit the inductive reactance and provide a broad band impedance match. This connector design can accommodate both stripline and grounded coplanar waveguide (GCPW). | 11-20-2014 |