Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1980-03-12
1981-11-24
Gensler, Paul L.
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333246, H01P 115
Patent
active
043027342
ABSTRACT:
A microwave switching power divider for selectively dividing and switching microwave energy among a plurality of outputs to other microwave devices includes a pair of parallel, spaced-apart circular ground planes defining a microwave cavity with multi-port microwave power distributing switching circuitry formed on opposite sides of a thin circular dielectric substrate disposed beween 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 plurality of tapered radial power dividing transmission lines for intercepting the standing waves are symmetrically disposed about and connected to the conductive disk. Within each line, 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. Output port impedance is held within a desired range by choice of cavity and power distribution circuitry dimensions.
REFERENCES:
patent: 2913686 (1959-11-01), Fubini et al.
patent: 3223947 (1965-12-01), Clar
patent: 3474358 (1969-10-01), Geddry et al.
patent: 3475700 (1969-10-01), Ertel
patent: 3503014 (1970-03-01), Hall et al.
patent: 4127830 (1978-11-01), Chalifour et al.
Frosch Robert A. Administrator of the National Aeronautics and Space
Johnson Russell W.
Stockton Ronald J.
Gensler Paul L.
Manning John R.
Sandler Ronald F.
Tresansky John O.
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