Amplifiers – With semiconductor amplifying device – Including signal feedback means
Patent
1983-07-19
1985-09-17
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including signal feedback means
330283, H03F 134, H03G 312
Patent
active
045423504
ABSTRACT:
A monolithic integrated circuit device is formed on a substrate and made up of an AC negative feedback circuit for a high frequency amplifier circuit. The AC negative feedback circuit includes a semiconductor impedance element and connected to an external terminal on the substrate, and variable control means for adjusting an amount of the AC feedback of the high frequency amplifier circuit. As the semiconductor impedance element is used the junction capacitance of a diode under negative bias, diffusion capacitance between the base and emitter electrodes or between the base and collector electrodes of a transistor or a differentiated resistance of a diode.
REFERENCES:
Session VII Microwave Analog and Digital Signal Processors, by Walter Krupa et al., ISSCC 78/Wednesday, Feb. 15, 1978, Continental Ballroom.
Akazawa Yukio
Ishihara Noboru
Ohara Mamoru
Mullins James B.
Nippon Telegraph & Telephone Public Corporation
Wan G.
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