Scanning receiver for use in power amplifier linearization

Details Scanning receiver for use in power amplifier linearization Scanning receiver for use in power amplifier linearization

2007-01-23

2007-01-23

Nguyen, Tony T. (Department: 2618)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S114300, C455S133000, C455S341000, C330S151000, C370S252000

Reexamination Certificate

active

10942486

ABSTRACT:
A feed forward power amplifier system and method identify active channels across a frequency band to suppress unwanted intermodulation distortion (IMD) products in a communications signal such as a single- or multi-carrier communications signal. A scanning receiver identifies at least one active channel in a frequency band, and identifies at least one portion of the frequency band likely to include IMD products based upon the identified active channel(s). Based upon the identified portion of the frequency band, IMD products are suppressed from the communications signal, e.g., by controlling the magnitude and/or phase of a suppression signal mixed with the communications signal.

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