The invention relates to a method of calibrating the reception path and the transmit path of an antenna array which comprises at least three antennas and which is connected to a digital signal processor. For calibrating the reception path a signal of known amplitude and known phase is transmitted by...http://www.google.de/patents/US20070069945?utm_source=gb-gplus-sharePatent US20070069945 - Calibration method for smart antenna arrays
