Configurable load impedance for power amplifier...

Details Configurable load impedance for power amplifier... Configurable load impedance for power amplifier...

2008-02-14

2011-12-27

Ahn, Sam K (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

Reexamination Certificate

active

08085869

ABSTRACT:
An integrated circuit radio transceiver and method therefor includes an integrated circuit radio transceiver operable to provide specified gain levels and transmit path filter responses to correspond with a selected power spectral density mask. Changes in gain may be provided solely digital gain changes or may include analog gain module gain changes. A transmitter selects from one of at least three masks to reduce or eliminate spectral regrowth out of band to satisfy EVM requirements. Circuitry is provided to allow a transceiver to determine in advance what pre-distortion compensation settings are required for the various gain settings.

REFERENCES:
patent: 5937011 (1999-08-01), Carney et al.
patent: 6362606 (2002-03-01), Dupuis et al.
patent: 7672648 (2010-03-01), Groe et al.
patent: 2007/0237256 (2007-10-01), Boos

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