Self calibrating receive path correction system in a receiver

Details Self calibrating receive path correction system in a receiver Self calibrating receive path correction system in a receiver

2006-10-31

2006-10-31

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Receivers

C375S345000, C375S319000, C455S130000, C455S232100

Reexamination Certificate

active

07130359

ABSTRACT:
A receiver (50) includes a self-calibrating receive path correction system for correction of I/Q gain and phase imbalances in a radio frequency signal. The system includes a signal-processing block (53), an I/Q phase imbalance detection and correction circuit (98), an I/Q gain imbalance detection and correction circuit (96), and an adaptive loop bandwidth control circuit (102). The I/Q phase imbalance detection and correction circuit (98) equalizes for the relative phase imbalance and the I/Q gain imbalance detection and correction circuit (96) equalizes for the relative gain imbalance between the I and Q channels created by the analog portion of a quadrature receiver. The adaptive loop bandwidth control circuit (102) dynamically adjusts at least one loop bandwidth for the I/Q gain imbalance detection and correction circuit (96) and the I/Q phase imbalance detection and correction circuit (98) on a slot boundary.

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