摘要
高频小信号调谐放大器是电子装备中的常用电路,为了拓宽通频带、改善选择性,实际中常采用双参差调谐放大器。双参差调谐放大器中两级级联的单调谐放大器电路结构相同、谐振频率不同,合理地选择单调谐放大器电路选频网络的电路参数,可使双参差调谐放大器电路具有宽单峰特性或双峰频率特性,实现较宽的通频带和较好的选择性。借助Multisim仿真软件可对电路结构和参数进行设计优化。
High-frequency small-signal tuned amplifiers are commonly used circuits in electronic equipment.In order to widen the passband and improve the selectivity,double-staggered tuned amplifiers are often used in practice.The two-stage cascaded single-tuned amplifiers in the double-staggered tuned amplifier have the same circuit structure and different resonance frequencies.Reasonable selection of the circuit parameters of the frequency selection network of the single-tuned amplifier circuit can make the double-staggered tuned amplifier circuit have a wide single-peak frequency characteristic or double-peak frequency characteristics,and achieve a wider passband and better selectivity.The circuit structure and parameters can be optimized with the help of Multisim simulation software.
作者
唐金元
邵红
丁国臣
詹昌文
TANG Jinyuan;SHAO Hong;DING Guochen;ZHAN Changwen(Qingdao Branch of Naval Aviation University,Qingdao 266041,China)
出处
《电工技术》
2023年第9期5-8,12,共5页
Electric Engineering
关键词
放大器
调谐
参差调谐
通频带
选择性
仿真
amplifier
tuning
staggered tuning
passband
selectivity
simulation
