| 摘要 |
PURPOSE:To input an output from a receiving local oscillator to a modulator at a high level, by modulating outputs leaked to receiving signal sides of a local oscillator and an in-line mixer by an amplitude modulator or a phase modulator with an order signal or a control signal and transmitting the outputs from an antenna. CONSTITUTION:A waveguide type in-line mixer 8 is used, a receiving signal is inputted to one input terminal and an output of the receiving local oscillator 5 is inputted to the other input terminal via an isolator 4 and a band stop filter 9 (blocking the receiving signal and passing the frequency of the oscillator 5), and an intermediate frequency output is obtained at a terminal 12. |
