High power pin diode switch
AssigneeRaytheon Company
InventorsThomas M. Sharpe, Donald A. Charlton, Richard W. Burns
Life of this patent
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Abstract
A high power PIN diode single pole double throw (SPDT) switch for use in radar systems transmitting at over 50 watts of power. These systems require a switch that will provide adequate isolation for the sensitive amplifier circuits in the receiver subsystem of the radar from the high power transmit pulses in the event there is a bias failure such that the PIN diodes are at zero bias. By utilizing one single pole single throw (SPST) switch assembly between the transmitter and the antenna and at least two SPST switch assemblies between the antenna and the receiver, this isolation is achieved.
Claims8
A switch comprising:
- a first capacitor coupled to an input node at a first end and to a common node at a second end thereof;
- a second capacitor coupled to said common node at a first end and an output node at a second end thereof;
- a resonating stub connected between said common node and an open circuit;
- an inductive resonator electrically and physically connected directly to said common node at one end and having a second end;
- a PIN diode electrically and physically connected directly between said second end of said inductive resonator and ground;
- and
- means for providing bias control coupled to said common node.
A switch comprising:
- a first capacitor coupled to an input node at a first end and to a common node at a second end thereof;
- a second capacitor coupled to said common node at a first end and an output node at a second end thereof;
- a resonating stub connected between said common node and an open circuit;
- an inductive resonator electrically and physically connected directly to said common node at one end and having a second end;
- a PIN diode electrically and physically connected directly between said second end of said inductive resonator and ground;
- and
- means for providing variable bias control to said diode via said common node.
Dependencies are inferred from the claim text.