Band pass amplifier

Amplifiers – With amplifier condition indicating or testing means

Patent

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Details

330 31, 330 40, H03F 304

Patent

active

040286290

ABSTRACT:
A frequency band pass circuit having an amplifier that has an amplifying state and may be selectively deenergized to a non-amplifying state. A reverse bias is placed on the amplifier when in the deenergized state to provide substantially the same band pass characteristics of the circuit in the non-amplifying state as in the amplifying state and to reduce the insertion loss impedance through the amplifier in the non-amplifying state.

REFERENCES:
patent: 2763832 (1956-09-01), Shockley
patent: 3328714 (1967-06-01), Hugenholtz
patent: 3519765 (1970-07-01), Huber
patent: 3953806 (1976-04-01), Veranth

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