Mixer circuit

Details Mixer circuit Mixer circuit

1992-07-17

1994-07-12

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307494, 328156, 330254, G06G 700, H03B 1900

Patent

active

053291891

ABSTRACT:
A mixer circuit which is improved in distortion characteristic and band characteristic and can assure impedance matching with another circuit at a preceding stage readily and besides can prevent abnormal oscillations. The mixer circuit comprises a differential amplifier constituted from a pair of transistors grounded at the emitters thereof, and a double balanced mixer constituted from first and second pairs of transistors. A first impedance element is interposed between a junction between the emitters of the first pair of transistors of the double balanced mixer and the collector of one of the pair of transistors of the differential amplifier, and a second impedance element is interposed between a junction between the emitters of the second pair of transistors of the double balanced mixer and the collector of the other of the pair of transistors of the differential amplifier.

REFERENCES:
patent: 4308471 (1981-12-01), Misawa
patent: 4560947 (1985-12-01), Frey
patent: 4614911 (1986-09-01), Kawano
patent: 4792992 (1988-12-01), Rinderle
patent: 4833340 (1989-05-01), Deguchi
patent: 4931746 (1990-06-01), Trankle et al.

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