| Patent Number |
Title Of Patent |
Date Issued |
| 7555051 |
Method and device for estimating IQ imbalance |
June 30, 2009 |
| A quadrature transmitter and receiver have configurable I and Q channel paths that facilitate the application of selected test signals to determine gain and phase imbalances introduced by the transmitter and receiver. In a first `normal` configuration, the I and Q channels are indepe |
| 7440738 |
Automatic gain control with two power detectors |
October 21, 2008 |
| A receiver (100) adjusts its overall gain based on the detected power level of an incoming signal. The receiver is built with two detectors (D1, D2) which operate with different detecting ranges within the dynamic range of the incoming signal. If the actual power level of the incoming |
| 6670900 |
Quadrature mismatch compensation |
December 30, 2003 |
| A combination of pre-distortion and post-distortion processes compensate for errors in I/Q channel orthogonality. The pre-distortion and post-distortion processes are calibrated to compensate for these errors at a variety of frequencies across a frequency span, thereby providing freq |
