以谐振回路为选频网络的高频小信号放大器称为小信号谐振放大器,或小信号调谐放大器。放大器件可采用单管、双管组合电路和集成放大电路等，谐振回路可以是单谐振回路或双耦合谐振回路。单调谐回路的谐振放大器电路简单，调整方便，所以应用较广。-To resonant circuit for frequency-selective network of high-frequency small-signal amplifier as the small signal resonant amplifier, or small-signal amplifier tuner. Amplifiers can be single pieces of pipe, double-barreled combination of integrated circuit and amplifier circuit, etc. resonance circuit can be single-or double-resonant circuit coupled resonant circuit. Single-tuned circuit resonant amplifier circuit is simple, convenient adjustment, so a wider application.