Transistor mixer

Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion

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455253, 334 15, H04B 128

Patent

active

048500399

ABSTRACT:
A mixer for mixing first and second signals for providing a difference signal comprises a mixing transistor. The first and second signals are applied between the base and emitter electrodes of the transistor. A non-linear impedance is coupled in series with the emitter electrode. Spurious signal components are reduced in amplitude compared with the difference signal.

REFERENCES:
patent: 3348154 (1967-10-01), Fish, Jr. et al.
patent: 3348155 (1967-10-01), Von Recklinghausen
patent: 3694756 (1972-09-01), Carlson
patent: 3976944 (1976-08-01), Kreng et al.
patent: 4160953 (1979-07-01), Matsuura et al.
patent: 4162451 (1979-07-01), Ash
patent: 4556990 (1985-12-01), Hasler
patent: 4633188 (1986-12-01), Matsuta
"The Channel 6 Color Beat--What Can Be Done About It?", by Hector L. Gasquet, IEEE Transactions on Broadcast and Television Receivers, Feb. 1972, BTR-18, No. 1, pp. 11-17.
"Television Engineering Handbook", K. Blair Benson, McGraw-Hill Book Company, New York; 1986, pp. 13.92-13.93.

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