The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2011
Filed:
Aug. 08, 2008
Michael Andrew Scott, Isle of Wight, GB;
Michael Andrew Scott, Isle of Wight, GB;
BAE Systems plc, London, GB;
Abstract
The present invention relates to antenna calibration for active phased array antennas. Specifically, the present invention relates to a built in apparatus for autonomous antenna calibration Accordingly, the present invention provides a method of self-calibration of a plurality of calibration antennas comprising the steps of: (i) selecting two calibration antennas to be calibrated that have a common area in range of both calibration antennas; (ii) selecting at least one radiating element within range of the two calibration antennas; (iii) transmitted a known test signal from the one or more selected radiating elements; (iv) measuring a received signal at each of the two calibration antennas; (v) comparing the received signals at each of the two calibration antennas; and (vi) determining a correction coefficient for each calibration antenna based on the received signals at the said calibration antennas.