Patent ID: 7714775
Filing Date: 2010-05-11
Classification: G01S,H01Q

Abstract:
1. A method for receive array calibration of a phased array antenna system, wherein the phased array antenna system comprises a plurality of antenna elements, a beamsteering computer, and a calibration probe, comprising the steps of: (a) generating a broadband, bi-phase modulated input signal; (b) exciting the calibration probe with the input signal; (c) setting one of the plurality of antenna elements to receive; (d) receiving the input signal radiated from the calibration probe at the antenna element set to receive; (e) demodulating the received signal and analyzing it with the beamsteering computer to determine the health of the antenna element; and (f) repeating the steps (c)-(e) for each remaining antenna element; wherein the phased array antenna system further comprises a plurality of individual element control circuits, wherein each of the individual element control circuits controls one of the plurality of antenna elements with respect to phase state, and wherein each antenna element set to receive is cycled through multiple phase states.