Semiconductor amplifier with compensated passing gain characteri

Details Semiconductor amplifier with compensated passing gain characteri Semiconductor amplifier with compensated passing gain characteri

1999-06-15

2000-12-26

Shingleton, Michael B

Amplifiers

With semiconductor amplifying device

Including field effect transistor

330302, H03F 126, H03F 130

Patent

active

061666041

ABSTRACT:
A semiconductor amplifier with a compensated passing gain characteristic and passing phase characteristic is disclosed. Connected to an input to a non-linear amplifying element is a characteristic improving circuit comprising a passive circuit including a capacitor, a resistor, and an inductor, and an FET connected to the passive circuit and having its source and a drain both grounded. In the characteristic improving circuit, with an increase in the input level, a gate capacitance of the FET is increased to enhance the passing gain and reduce the passing phase. Such characteristics of the characteristic improving circuit compensate for the characteristics of the FET to improve a phase characteristic and a distortion characteristic of the non-linear amplifying element at an output level.

REFERENCES:
patent: 5194826 (1993-03-01), Huusko
patent: 5202649 (1993-04-01), Kashiwa
patent: 5343172 (1994-08-01), Utsu et al.
patent: 5363058 (1994-11-01), Sasaki
patent: 5506544 (1996-04-01), Staudinger et al.

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