Feed forward amplifier employing positive feedback pilot...

Details Feed forward amplifier employing positive feedback pilot... Feed forward amplifier employing positive feedback pilot...

2007-03-06

2007-03-06

Choe, Henry (Department: 2817)

Amplifiers

With pilot frequency control means

C330S151000

Reexamination Certificate

active

11369529

ABSTRACT:
A feed forward amplifier and method of amplification are disclosed. The amplifier output is used to generate a pilot signal via feedback using uncancelled noise in the amplifier output. An automatic level control circuit maintains the pilot signal at a substantially constant level when the detected uncancelled noise in the amplifier output is above a threshold level. The generated pilot signal strength is allowed to vary when the detected uncancelled noise in the amplifier output is below the threshold and disappears automatically when the amplifier is aligned.

REFERENCES:
patent: 5485120 (1996-01-01), Anvari
patent: 6208204 (2001-03-01), Suzuki et al.
patent: 6774716 (2004-08-01), Suto

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