| 摘要 |
PURPOSE:To attain high efficient amplification with a non-linear amplifier and to obtain the transmission wave of small same channel interference by generating frequency and modulating contents to be same as an input signal from a voltage control oscillator, which constitutes an amplifier, removing the adjacent interference wave of a constant output level and obtaining single output wave as the output of the oscillator. CONSTITUTION:A plenty of RF input waves are amplified by a receiving pre- amplifier 1 and after that, only a desired frequency is selected by receiving input filters 2a-2n and divided into a stable operating frequency to phase comparators 5a-5n. In the comparators 5a-5n, signals from dividers 4a-4n and 7a-7n are compared and passed through low-pass filters 6a-6n for feedback, Then, the signals are inputted to voltage control oscillators 8a-8n, an oscillating frequency is controlled and a frequency to be synchronized to the frequency of a selecting wave signal is outputted. After that, this output is amplified with high efficiency by transmitting power amplifiers 9a-9n and passed through transmission output filters 3a-3n and isolators 13a-13n. Then, the output is synthesized by a transmission power synthesizer 10 and outputted. |
