Double-balanced mixer circuit

Details Double-balanced mixer circuit Double-balanced mixer circuit

1984-07-03

1987-01-13

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328156, 328158, 332 16T, 307498, G06G 700, H03B 1900

Patent

active

046366636

ABSTRACT:
A double-balanced RF mixer circuit comprising two differential amplifiers each of which comprises a pair of transistors the emitters of which are connected in common and the bases of which are cross-coupled to provide common first and second base terminals to which an oscillator signal is applied. A radio frequency signal to be mixed is applied to a voltage-current converter comprising a pair of transistors connected as a balanced common-base circuit, the collectors of such transistors being coupled to the common-emitter terminals of the differential amplifiers. Such a mixer circuit provides improved intermodulation and noise behaviour as compared with mixers in which the voltage-current converter is a conventional differential amplifier.

REFERENCES:
patent: 3267392 (1966-08-01), Hudspeth
patent: 3432650 (1969-03-01), Thompson
patent: 3684974 (1972-08-01), Solomon et al.
patent: 3721766 (1973-03-01), Hilbert
patent: 3783398 (1974-01-01), Dann
patent: 4187537 (1980-02-01), Aricola et al.
patent: 4546275 (1985-10-01), Pena-Finol et al.

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