Invention Grant
US08416883B2 Configurable load impedance for power amplifier pre-distortion calibration 有权
功率放大器预失真校准的可配置负载阻抗

Configurable load impedance for power amplifier pre-distortion calibration
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.
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