Frequency conversion circuit

Details Frequency conversion circuit Frequency conversion circuit

1981-04-07

1983-09-06

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307520, 307525, 307529, 455284, H03B 524, H03B 2100

Patent

active

044031564

ABSTRACT:
A frequency conversion circuit in which effects of odd order terms in the input and output characteristics of the active elements of the circuit, which otherwise would produce IM interference, are eliminated. A superposition signal composed of two signals of different frequencies is applied, in opposite phases, to control inputs of a differential pair of transistors. A common load is coupled to the differential pair with the odd order terms being cancelled at the common connection point of the differential pair. The common load is preferably a resonant circuit.

REFERENCES:
patent: 1821906 (1931-09-01), Cohen
patent: 3335290 (1967-08-01), Fischman et al.
patent: 3517214 (1970-06-01), Boegeman
patent: 3613022 (1971-10-01), White
patent: 3628168 (1971-12-01), Kobayashi
patent: 3872393 (1975-03-01), Ohsawa
patent: 4345502 (1982-08-01), Jahns

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