Patent ID: 6879918
Filing Date: 2005-04-12
Classification: G01R

Abstract:
1. A method for calibrating a transmission line, wherein an end of the transmission line is arranged for connection to an antenna, the method comprising the steps of: causing the transmission line end arranged for connection to an antenna to be disconnected from the antenna; feeding a signal into an input end of the transmission line for transmission of the input signal toward the antenna end of the transmission line; sampling the input signal to provide an energy level proportional to an energy level of the input signal; sampling a return signal representing a reflection of the input signal at the antenna end of the transmission line, the sampled return signal corresponding to an energy level proportional to an energy level of the return signal; comparing the energy level of the sampled return signal to the energy level of the sampled input signal to determine a transmission loss of the transmission line; and calibrating the transmission line as a function of the transmission loss.