High-frequency limiter and switch-limiter circuit having improve

Details High-frequency limiter and switch-limiter circuit having improve High-frequency limiter and switch-limiter circuit having improve

1992-09-03

1994-04-05

Pascal, Robert J.

Wave transmission lines and networks

Automatically controlled systems

Limiting of amplitude

333262, 3073171, 307540, H03G 1104, H04B 304

Patent

active

053009002

ABSTRACT:
High-frequency limiter and switch-limiter circuits having reduced insertion loss and improved recovery time are disclosed herein. The high-frequency switch-limiter includes at least one input port and a high-frequency signal path between the input port and a common arm. An input diode generates a first bias current in response to incidence upon the input port of high-energy signals in excess of a predefined power level. A set of protection diodes reflects the high-energy signals upon being switched to an ON state by a portion of the first bias current or by a second bias current, with the protection diodes being disposed to reflect signal energy propagated by the high-frequency signal paths when in the ON state and to pass signal energy propagated by the high-frequency signal paths when in an OFF state. Switching of the protection diodes between the ON and OFF states is expedited by modifying the impedance of a bias network included within a driver network, wherein the driver network is disposed to generate the second bias current in response to a switch control signal.

REFERENCES:
patent: 3448414 (1967-05-01), Bronton, III
patent: 3959750 (1976-05-01), Holt
patent: 4232278 (1980-11-01), Gawronski
patent: 4635297 (1987-01-01), Polischuk
patent: 4754240 (1988-06-01), Marconi

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