課程設計-混頻器(已修改)
2025-08-17 16:53 本頁面
【正文】 通信電子線路課程設計說明書 三極管混頻器 院 、 部： 學生姓名： 指導教師： 職稱： 專 業(yè)： 班 級： 完成時間： 摘 要 混頻器在現(xiàn)代通信中的應用非常的廣泛，融入了人們的生活當中。是現(xiàn)代通信中一個不可或缺的?；祛l器通過改變頻率來達到應有的目的，即變頻。本次課程設計采用三級管混頻器，電路簡單，變頻增益高。輸入兩個高頻信號，通過三極管混頻電路和選頻回路，最后可以得到一個差頻信號。采用9014三極管，用中周來充當選頻回路，本設計結構簡單，性能相對較為穩(wěn)定，成本低，使用滑動變阻器改變靜態(tài)工作點，使其工作在非線性工作區(qū)域，是發(fā)射極注入、基極輸入式變頻電路。關鍵詞：混頻器；三極管；選頻 ABSTRACTApplication of mixer in modern munication is very wide, into people39。s lives. The modern munication is an indispensable. The mixer to achieve the desired objective by changing frequency, variable frequency.This course is designed with three pipe mixer, simple circuit, high conversion gain. Input two highfrequency signal, pipe mixer circuit and frequency selection circuit through the pole, and then we can get a difference frequency signal. The 9014 triode, used in the weeks to act as a frequency selective circuit, this design has the advantages of simple structure, performance is relatively stable, low cost, the use of a sliding rheostat change the static working point, which works in the nonlinear area, is the emitter injection, base input type frequency conversion circuit.Key wor
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