Distortion corrector for wide-band transistorized amplification

Details Distortion corrector for wide-band transistorized amplification Distortion corrector for wide-band transistorized amplification

1977-11-15

1978-10-10

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330149, 330283, 330305, 330311, H03F 108, H03F 310, H03F 319

Patent

active

041199235

ABSTRACT:
Corrector consisting in arranging, in the circuit of an electrode of a transistor, or between two transistorized stages, of an amplifier to be corrected, a circuit equipped with at least one varactor in parallel with a resistance and fed by the current flowing through the transistor or transistors under a source impedance which is sufficiently low by comparison with that of this circuit, the effects of the variation in the capacitance of the varactor or varactors, in dependence upon the signal, compensating those due to this varactor effect.

REFERENCES:
patent: 3509480 (1970-04-01), Hiekman
patent: 3533020 (1970-10-01), Hecht
patent: 3614644 (1971-10-01), Lieberman
patent: 3952260 (1976-04-01), Pruchazka et al.
Taub, "Differential Amplifier With High Input Impedance", IBM Technical Disclosure Bulletin, vol. 9, No. 11, Apr. 1967, pp. 1637-1638.

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