Matched variable attenuation switched limiter

Details Matched variable attenuation switched limiter Matched variable attenuation switched limiter

1987-06-04

1989-03-07

Gensler, Paul

Wave transmission lines and networks

Automatically controlled systems

Impedance matching

333 81A, 455 80, H01P 122, H01P 504

Patent

active

048109800

ABSTRACT:
This invention provides a switched limiter with variable attenuation designed with monolithic GaAs p-i-n diodes. Greater than 30 dB of small-signal variable attenuation is achieved at X band frequencies, with a minimum insertion loss of 0.5 dB. The variable attenuation switched limiter provides 15 dB of isolation to a +30 dBm input signal. Under bias conditions that result in variable attenuation the variable attenuation switched limiter input impedance remains matched. When used as a passive limiter, 7 dB of limiting has been achieved for a +30 dBm input signal at 10 GHz.

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Toyoda et al., GaAs Varactor Diode for UHF TV Tuners, Nat'l. Tech. Report, Feb. 1976, pp. 75-80, Matsushita Elec. Ind. Co., Ltd.

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