Patent ID: 9350469
Filing Date: 2016-05-24
CPC Classification: H04B,H04L

Claim Text:
1. A system comprising: a low-IF receiver configured to be tunable for selected channels; a synthesizer configured to produce a Test Signal in mirror frequencies for a selected channel and for conveying the Test Signal to the receiver; an IQ Imbalance Estimator configured for estimating a phase imbalance and a gain imbalance in the receiver based on a signal produced in the receiver from the Test Signal; and a power detector configured to produce a Power Estimate of the signal produced in the receiver from the conveyed Test Signal, wherein the system is further configured for: setting a first searching region for gain imbalance and phase imbalance in the receiver; selecting a first plurality of grid-points within the first searching region; and measuring a Power Estimate for each grid-point in the first plurality of grid-points by setting a gain-correction and a phase-correction in the receiver corresponding to the coordinates of each grid-point in the first plurality of grid-points.