UHF transistor mixer circuit

Details UHF transistor mixer circuit UHF transistor mixer circuit

1990-08-27

1993-08-31

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307271, 455333, 328 15, 328156, H03D 1300, H03K 906

Patent

active

052412288

ABSTRACT:
A UHF transistor mixer circuit includes a transistor having a base to which an inputted high-frequency signal and a local oscillation signal are inputted. A bias voltage is applied to the base from a direct current voltage source through an inductor constructed with a microstripline. A low-pass filter which prevents signal components in the UHF band from being passed therethrough is provided between the base and the voltage source, and more particularly between the inductor and the direct current voltage source. The local oscillation signal is prevented from flowing toward the direct current voltage source by the low-pass filter, and therefore, the intermodulation distortion of the mixer circuit can be improved.

REFERENCES:
patent: 3716730 (1973-02-01), Cerny, Jr.
patent: 3863136 (1975-01-01), Hanson
patent: 4308473 (1981-12-01), Carnes
patent: 4684833 (1987-08-01), Rinderle
patent: 4845389 (1989-08-01), Pyndiah et al.
patent: 4850039 (1989-07-01), Materspaugh
patent: 5043609 (1991-08-01), Uno et al.

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