Patent ID: 6131020
Filing Date: 2000-10-10
Classification: G01R,H04B

Abstract:
In an arrangement for measuring a condition of an antenna in a mobile telephone system, the arrangement having a radio equipment and means including a transmission line connecting the radio equipment to the antenna, the transmission line having opposite end sections, whereby one of the end sections of the transmission line is closer to the antenna than the other of the end sections of the transmission line, the improvements comprising:a masthead amplifier at the one of the end sections of the transmission line, the masthead amplifier having first and second duplex filters, an RX branch, a TX branch and an amplifier element in the RX branch, wherein the RX branch, the TX branch and the amplifier element are between the duplex filters;means for measuring the standing wave ratio and for calculating a measuring value therefrom, wherein the measuring is made within the one end section of the transmission line; anddata processing means responsive to the means for measuring the standing wave ratio and for calculating its measuring value for measuring the condition of the antenna.