MICROWAVE REFLECTING PLATE RELAY SYSTEM AND REFLECTING PLATE USED FOR SAID RELAY SYSTEM

摘要

PURPOSE:To reduce the effect of reflecting waves from mountains and to improve the quality of lines, by reflecting a circular polarized signal irradiated from a terminal station twice at a relay station and transmitting the signal to another terminal station. CONSTITUTION:A circular polarized wave having a rotating magnetic field in a specified direction is generated from an antenna feeding section of a terminal station 1 and a signal 11 is transmitted to a relay device 2 via a reflecting mirror of the antenna. The rotating magnetic field of the incident circular polarized wave is reflected twice with a reflecting plate having the reflecting plate of two counter plates with about 90 deg. of angle at the relay device 2 and a signal 14 is transmitted as the circular polarized wave having the same rotating magnetic field as that of the incident wave. The signal 14 is received and demodulated at a terminal station 3. A signal 12 irradiated at the same time from the terminal station 1 is reflected with a reflecting means 4 such as mountains and received at a terminal station 3, and since the signals 13, 14 have different direction of the rotating magnetic field, the terminal 3 can discriminate both signals.