高頻課程設計--三極管混頻器-展示頁
2025-06-19 13:09本頁面
【正文】 kfiam radio receiver will be already amplitude modulated signal 535KHZ a 1605KHZ to bee 465KHZ midfrequency signal, for television receiver will have a 870M M tone of image signal to bee 38MHZ of intermediate frequency image signal. people are always looking for fast way to municate over distance, to transfer or to exchange information. Modern long distance munication technology was invented in mid of 18th century thanks to the invention of radio technology. Since then, this technology was well developed and many new methods came out. From Morse code to satellite, modern munication is playing more and more important role. As a key part of radio technology – mixing, . transistor mixer, diode mixer and FET mixer, etc. are broadly used in different system， to shift frequency. The figure hereafter illustrated the basic ponents of a munication system. There are kinds of munication technology。 normally they are applied by the front end of receiver. They are used by superheterodyne receiver, frequency synthesizer, microwave repeater and instruments. Therefore, this kind of design practice can greatly help to understand RF knowledge well. Furthermore, as auxiliary circuit, LC work and RC active filter are applied to this design, to effectively eliminate interference. 3 目 錄 摘要 ..................................................................... 1 第一章 系統(tǒng)分析 ....................................................... 4 設計課題任務 ...................................................... 4 課題基本原理 ...................................................... 4 混頻電路的分類 .................................................... 5 混頻電路的實際應用 及實驗儀器 ...................................... 6 第二章 軟件介紹 ...................................................... 7 工具的選擇 —— Multisim 10 簡介 ................................... 7 Multisim 10 的特點 .............................................. 7 第三章 設計課題的仿真分析晶體管混頻器虛擬實現(xiàn) ........................ 8 設計課題的參數(shù)選擇 ................................................ 8 晶體三極管混頻器設計及課題的仿真結果 ............................. 10 設計課題的仿真調試 ............................................... 20 第四章 結論 ......................................................... 23 致謝 .................................................................... 24 參考文獻 ................................................................ 25 附錄： Multisim 掃頻儀的介紹 .........................................26 清單 ........................................................27 PCB 圖 ...................
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