引言许多无线电装置都要求正弦波高频放大器中出现的相移非常稳定。放大器引入的相位不固定是由许多因素引起的,如振动、温度、压力、电源电压、负载、输入信号电平等的变化。减小相移不稳定性的方法通常是使用高稳定电源和元件、仔细选择工作状态、以及通过扩展通频带和牺牲放大量来减小高频放大器相位特性的斜率。 Introduction Many radios require that the phase shift appearing in a sinusoidal high-frequency amplifier be very stable. Amplifier phase imbalance is caused by many factors, such as vibration, temperature, pressure, power supply voltage, load, the input signal level changes. Methods to reduce the instability of phase shifts are usually to use high-stability power supplies and components, carefully select the operating conditions, and reduce the slope of the high frequency amplifier's phase characteristics by extending the passband and sacrificing magnification.