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本发明主要介绍一种减少放大器互调成份的设备。在宽带传输电路中,常常同时使用多个不同频率的信道传输信息。在宽带传输电路中的有源器件,如行波管、速调管都具有两个特征:(1)幅度非线性,(2)单独地引起失真的相位现象,即互调成份,因此,在系统中产生一些不希望的噪声。第一种失真的原因是放大器趋向饱和时的非线性功率输入/输出特性。第二种失真的原因是输入信号功率变化时,通过放大器而发生相移变化。
The present invention mainly introduces a device for reducing intermodulation components of an amplifier. In broadband transmission circuits, it is common to use multiple channels of different frequencies to transmit information simultaneously. Active devices in wideband transmission circuits, such as traveling wave tubes and klystrons, have two characteristics: (1) amplitude non-linearity, (2) the phase phenomenon that causes distortion separately, that is, intermodulation, and therefore, Some unwanted noise is generated in the system. The first distortion is due to the non-linear power input / output characteristics when the amplifier tends to saturate. The second distortion is due to the input signal power changes, the phase shift occurs through the amplifier changes.