Amplifiers – Signal feedback – Combined with control of bias voltage of signal amplifier
Patent
1975-10-02
1977-03-01
Rolinec, Rudolph V.
Amplifiers
Signal feedback
Combined with control of bias voltage of signal amplifier
323 4, 330 19, 330 22, H03F 316
Patent
active
040104257
ABSTRACT:
Unity current gain impedance transformation at the input of a field effect transistor current mirror amplifier reduces the input impedance and renders it independent of the mirror ratio. A net saving of semiconductor material may be obtained for a given mirror ratio and input impedance when the transformation is provided by a common gate connected complementary field effect transistor meeting certain effective threshold voltage and forward transfer conductance ratio requirements.
REFERENCES:
patent: 3813595 (1974-05-01), Sheng
patent: 3925718 (1975-12-01), Wittlinger
Dingwall Andrew Gordon Francis
Rosenthal Bruce David
Christoffersen H.
Coalter R. G.
Cohen S.
Dahl Lawrence J.
RCA Corporation
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