Variable gain amplification circuit

Details Variable gain amplification circuit Variable gain amplification circuit

2004-03-16

2010-10-19

Shingleton, Michael B (Department: 2815)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S302000, C330S305000, C327S359000, C327S581000, C455S234100

Reexamination Certificate

active

07816990

ABSTRACT:
A variable gain amplification circuit comprises a signal generator that has an output terminal and is able to vary an output amplitude; a variable capacitor connected between the output terminal and an AC grounded terminal; and a control circuit for controlling the output amplitude of the signal generator, and a capacitance of the variable capacitor. Therefore, unnecessary signals can be attenuated even when the gain is low, and degradation in distortion characteristics in the latter block can be suppressed.

REFERENCES:
patent: 3541451 (1970-11-01), Lind
patent: 4758794 (1988-07-01), Ogawa
patent: 5280641 (1994-01-01), Ishii et al.
patent: 5463285 (1995-10-01), El-Hamamsy
patent: 5914513 (1999-06-01), Shenai et al.
patent: 6242963 (2001-06-01), Su et al.
patent: 6424222 (2002-07-01), Jeong et al.
patent: 54-070755 (1979-06-01), None
patent: 57-007604 (1982-01-01), None
patent: 62-119012 (1987-07-01), None
patent: 04-343504 (1992-11-01), None
patent: 06170368 (1994-06-01), None
patent: 6-310953 (1994-11-01), None
patent: 08256039 (1996-10-01), None
patent: 09-205382 (1997-08-01), None
patent: 10-13280 (1998-01-01), None
patent: 10-209901 (1998-08-01), None
patent: 11-289229 (1999-10-01), None
patent: 2000-101353 (2000-04-01), None
patent: 2000-323944 (2000-11-01), None
patent: 2002-94345 (2002-03-01), None

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