Microwave switching power divider
Abstract
A pair of parallel, spaced-apart circular ground planes define a microwave cavity with multi-port microwave power distributing switching circuitry formed on opposite sides of a thin circular dielectric substrate disposed between the ground planes. The power distributing circuitry includes a conductive disk located at the center of the substrate and connected to a source of microwave energy. A high speed, low insertion loss switching diode and a dc blocking capacitor are connected in series between the outer end of a transmission line and an output port. A high impedance, microwave blocking dc bias choke is connected between each switching diode and a source of switching current. The switching source forward biases the diodes to couple microwave energy from the conductive disk to selected output ports and, to associated antenna elements connected to the output ports to form a synthesized antenna pattern.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- November 1981
- Bibcode:
- 1981nasa.reptY....S
- Keywords:
-
- Antenna Feeds;
- Microwave Switching;
- Satellite Antennas;
- Strip Transmission Lines;
- Switching Circuits;
- Antenna Radiation Patterns;
- Dielectrics;
- Diodes;
- Microwave Antennas;
- Patents;
- Substrates;
- Electronics and Electrical Engineering