超外差式调幅收音机的设计(通信电子线路课程设计）

低频信号有效的发射出去需要通过高频信号调制，利用高频信号作为载波，对信号进行传递，可以用不一样的调制方法。在无线电广播中可分为调幅制、调频制两种调制方法。如今调频式或调幅式收音机，通常都选用超外差式，它具有灵敏度高、选择性好及失真度小等利益。这次课程设计我选用了超外差式收

(The effective transmission of low-frequency signals needs to be modulated by high-frequency signals, and the high-frequency signals are used as carriers to transmit the signals, and different modulation methods can be used. In radio broadcasting, it can be divided into two modulation methods: AM and FM. Nowadays, FM or AM radios usually use superheterodyne, which has the advantages of high sensitivity, good selectivity and low distortion. In this course design, I chose superheterodyne income.)

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