DEVICE FOR MEASURING RECEIVING STANDING-WAVE RATIO BY USING ABANDONED POWER AND METHOD THEREFOR - THE METHOD COMPRISES STEPS OF EXTRACTING THE FIRST POWER SIGNAL OUTPUTTED FROM A TRANSMISSION CIRCUIT TO THE FIRST ANTENNA, EXTRACTING THE SECOND POWER SIGNAL OUTPUTTED FROM THE SECOND ANTENNA TO A RECEIVING CIRCUIT, CALCULATING POWER ABANDONED FROM THE FIRST ANTENNA TO THE SECOND ANTENNA, AND DETECTING THE STANDING-WAVE RATIO OF THE SECOND ANTENNA

摘要

PURPOSE: A device for measuring a receiving standing-wave ratio by using an abandoned power is provided to calculate an abandoned power based on a power signal outputted from a transmission antenna and a power signal abandoned to a receiving antenna, and to detect a standing-wave ratio by using the calculated abandoned power. CONSTITUTION: A transmission signal outputted through a high power amplifier(111) is delivered through the first antenna(114), but a portion of the signal is substantially abandoned. The first directional coupler(210) is mounted on the first antenna(114) of a transmission circuit(110), and supplies a power signal to a detector(300) through a forward port(211). The second directional coupler(220) is mounted on the second antenna(123) of a receiving circuit(120), and supplies an abandoned power signal received through a reverse port(222) to the detector(300). The detector(300) calculates an abandoned power from the transmitted power signals, and measures a standing-wave ratio.