Avalanche diode amplifier

Details Avalanche diode amplifier Avalanche diode amplifier

1976-01-02

1977-09-20

Mullins, James B.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330 53, 330 61A, H03F 310

Patent

active

040500322

ABSTRACT:
A microwave amplifier is disclosed using a nonreciprocal three port junction circulator. The amplifier uses a ferrite circulator having an input port, an output port and a third electrical port. A semiconductor device such as an IMPATT diode having negative resistance is located adjacent and electrically coupled to the third electrical port. The negative resistance of the IMPATT diode combines with the output response of the third electrical port of the circulator to provide power amplification of microwave signals received on the input port.

REFERENCES:
patent: 3248662 (1966-04-01), Brownell et al.
patent: 3456213 (1969-07-01), Hershenov
patent: 3490053 (1970-01-01), Nagai et al.
patent: 3636465 (1972-01-01), MacPherson
patent: 3895308 (1975-07-01), Lee et al.
Welch, "Beam Lead Tunner Diode Amplifiers on Microstrip", IEEE Transactions on Microwave Theory and Techniques, vol. MTT-18, No. 12, Dec. 1970, pp. 1077-1083.

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