Variable gain amplifying device

Details Variable gain amplifying device Variable gain amplifying device

1996-11-07

1998-11-24

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330134, 330279, H03G 330

Patent

active

058413200

ABSTRACT:
A variable gain amplifying device for an AGC (Automatic Gain Control) circuit included in a receiver and having a broad dynamic range is disclosed. The device has a more linear gain-to-control voltage characteristic than the conventional device. Because the device broadens the range of control voltage without aggravating the deviation of the gain, its gain-to-control voltage characteristic is more stable than the characteristic of the conventional device.

REFERENCES:
patent: 3454721 (1969-07-01), Wolff
patent: 3740471 (1973-06-01), Wilcox
patent: 4223274 (1980-09-01), Paulke et al.
patent: 5099204 (1992-03-01), Wheatley, III
patent: 5160898 (1992-11-01), Black
patent: 5410275 (1995-04-01), Black
patent: 5432473 (1995-07-01), Mattila et al.

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