Efficient linear power amplification

Details Efficient linear power amplification Efficient linear power amplification

1994-09-14

1997-12-02

Chin, Stephen

Pulse or digital communications

Transmitters

Antinoise or distortion

375278, 375284, 375285, 375298, 330124R, 330151, 330295, 455 63, 4552351, 332103, 332123, 332159, H04K 102

Patent

active

056944330

ABSTRACT:
A method and apparatus for producing amplified signals for communications having reduced adjacent channel energy involving generating a first signal having an undesired amount of adjacent channel energy, generating a second signal corresponding to the undesired amount of adjacent channel energy, and subtracting the second signal from the first signal to remove the undesired amount of adjacent channel energy. Several embodiments are disclosed.

REFERENCES:
patent: 4843615 (1989-06-01), Davis
patent: 5121412 (1992-06-01), Borth
patent: 5187721 (1993-02-01), Wong
patent: 5436749 (1995-07-01), Pidgeon, Jr. et al.
patent: 5481389 (1996-01-01), Pidgeon et al.
Derek S. Hilborn, et al., "An Adaptive Direct Conversion Transmitter", IEEE Transactions on Vehicular Technology, vol. 43, No. 2, pp. 223-233, (May 1994), New York, US.

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