Microwave temperature compensated cascadable amplifier for fiber

Details Microwave temperature compensated cascadable amplifier for fiber Microwave temperature compensated cascadable amplifier for fiber

1987-06-04

1988-09-20

Wan, Gene

Amplifiers

With semiconductor amplifying device

Including atomic particle or radiant energy impinging on a...

330311, H03F 304

Patent

active

047728590

ABSTRACT:
A temperature compensated amplifier network for a fiber optical receiver includes a photodiode having an optical input and a current output, and a cascadable transimpedance amplifier having N stages, each stage having a common base-emitter voltage. An emitter-follower transistor is coupled to the last stage of the transimpedance amplifier network and has a base-emitter voltage of the same magnitude but of opposite polarity from the base-emitter voltage of each of the amplifier stages. Any DC drift of the amplifier stages is therefore offset by a compensating drift in the opposite direction by the output emitter-follower.

REFERENCES:
patent: 4713841 (1987-12-01), Porter

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