Patent ID: 9130270
Filing Date: 2015-09-08
Classification: H01Q,H04B

Abstract:
1. A method of correcting a scan path for a directional antenna system, the method comprising: generating an intended scan path by a scan path generator, wherein the intended scan path is a closed scan path around an expected directional center of a signal beam; scanning a directional antenna along an uncalibrated actual scan path by steering the directional antenna according to the intended scan path; receiving through the directional antenna a signal signature responsive to the scanning in said uncalibrated actual scan path; comparing said received signal signature with a reference signature for said intended scan path, wherein said reference signature is generated by modeling said directional antenna scanning said intended scan path; determining a corrective calibration that minimizes a difference between said received signal signature and said reference signature; applying said corrective calibration as a corrective waveform to said scan path generator; and scanning said directional antenna along a calibrated actual scan path having reduced deviation from said intended scan path by steering the directional antenna according to a combination of said intended scan path and said corrective waveform.