High gain balanced mixer

Details High gain balanced mixer High gain balanced mixer

1982-03-22

1984-05-15

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455317, 455326, 455332, 455333, 332 43B, H04B 126

Patent

active

044492456

ABSTRACT:
An improved active balanced mixer for developing an IF signal by combining an RF signal and a local oscillator signal while providing high conversion gain. The mixer utilizes a series resonant circuit resonant at the IF frequency to reduce degenerative feedback effects at the IF frequency, thereby increasing conversion gain. Circuit is particularly adapted for a receiver in which the received RF signal is relatively close to the receivers IF frequency.

REFERENCES:
patent: 2760061 (1956-08-01), Pan et al.
patent: 3383601 (1968-05-01), Squires
patent: 3469212 (1969-09-01), Karl et al.
patent: 3727078 (1973-04-01), Wollesen
patent: 3939430 (1976-02-01), Dickens et al.
patent: 4317230 (1982-02-01), Boubouleix
"Junction FETs in Active Double-Balanced Mixers" by Ed Oxner, Jun. 1973 (Siliconix Inc.-Application Note), pp. 1 and 2.
"FETs in Balanced Mixers" by Ed Oxner, Jul. 1972 (Siliconix, Inc. Application Note), pp. 1-15.

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