0385641-A2 is referenced by 67 patents and cites 4 patents.

An RF amplifier for a phase and envelope varying signal employs a class C operated device (110) for high efficiency. In order to improve the linearity of the class C operated device (110), a signal (s2(t)) corresponding to the envelope of the amplifier output is formed and a portion thereof is fedback to an envelope modulation element such as a pulse width modulator (140) connected to the class C operated device (110) to reduce distortion at the amplifier output.

Title
A high efficiency uhf linear power amplifier.
Application Number
EP19900301848 19900221
Publication Number
0385641 (A2)
Application Date
February 21, 1990
Publication Date
September 5, 1990
Inventor
Koch Michael Joseph
US
Fisher Reed Edward
US
Assignee
American Telephone & Telegraph
US
IPC
H03F 03/217
H03F 01/32
H03F 01/02
H03F 03/20
H03F 01/32
H03F 01/02
H03F 03/217
H03F 03/20
H03F 01/32
H03F 01/02
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