Automatic phase and gain balance controller for a baseband processor

摘要: An automatic phase and gain balance controller is incorporated in a typical baseband processor of MTI radar system employing doppler processing techniques to effect balancing adjustments the in-phase (I) quadrature (Q) signal generation channels for substantially eliminating spurious image frequency component formations which may result from any unbalance therein. More specifically, provides two non-interactive servo control loops maintain between I Q by performing on adjustment parameters, namely amplitude. Phase amplitude imbalance errors channel are obtained response pilot injected into receiver, perferably during dead times interpulse periods pulsed reception. Accordingly these sensed separately isolated each error used loop respectively associated therewith.