然而近代电子学对调谐的频率范围很宽的带通放大器提出很多要求。
There is a great deal of demand in modern electronics, however, for bandpass amplifiers .
通过键盘设置参数，实现放大器放大增益步进调节、滤波器带通频率步进调节功能。
Its parameters can be regulated by keyboard in order to control amplification and cutoff frequency by step.
根据功放的实测AM-AM、AM-PM特性，采用时域分析方法，并应用带通非线性理论和数字信号处理技术，分析了宽带数字调制信号激励下的射频功率放大器非线性失真特性。
The method is based on AM-AM?AM-PM characteristics of a nonlinear power amplifier and application of band -pass nonlinearity theory and digital signal processing techniques.
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