Invention Grant
US07974593B2 Apparatus and method for calibration of gain and/or phase imbalance and/or DC offset in a communication system 有权
用于在通信系统中校准增益和/或相位不平衡和/或DC偏移的装置和方法

Apparatus and method for calibration of gain and/or phase imbalance and/or DC offset in a communication system
Abstract:
An example of a radio frequency (RF) transmitter system for communication may include a transmit pre-distortion module configured to provide a second transmit calibration signal during a transmit calibration mode based on a first transmit calibration signal and one or more transmit calibration adjustment signals. The one or more transmit calibration adjustment signals may include an offset parameter associated with DC offset and an imbalance parameter associated with at least one of gain and phase imbalances. The system may include a transmit channel frequency converter coupled to the transmit pre-distortion module. The transmit channel frequency converter may be configured to provide a fourth transmit calibration signal during the transmit calibration mode based on a third transmit calibration signal and a transmit reference signal.
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