Patent ID: 9482705
Filing Date: 2016-11-01
CPC Classification: G01R,H04B

Claim Text:
1. A method implemented in a wireless transmitter of measuring a voltage standing wave ratio (VSWR) of an antenna system, said method comprising: generating time-domain measurement signals corresponding respectively to a forward signal and a reflected signal in a transmission line of the antenna system; converting the time-domain measurement signals to a frequency domain; computing reflection coefficients for a plurality of frequency bins based on said frequency-domain measurement signals; detecting interference in one or more of said frequency bins based on the reflection coefficients; discarding reflection coefficients for one or more frequency bins in which interference has been detected; computing the VSWR based on the reflection coefficients for the remaining frequency bins; and controlling, based on the computed VSWR, transmission of a signal on the transmission line, wherein the controlling comprises refraining from transmitting the transmission signal on the transmission line.