最新正弦波壓控振蕩課程設(shè)計(jì)-全文預(yù)覽
【正文】 e the information will not be able to send and receive, and thus a positive munication equipment almost without high stability of oscillations. Oscillator types include feedback oscillator, negative resistance oscillator, etc, this course is designed mainly to plete the sine wave voltage controlled oscillator (VCO) design. Contains a voltagecontrolled ponents as the oscillator frequency control device is called a voltage controlled oscillators, voltage controlled oscillators widely transmitters carrier source, spread spectrum munications carrier source or as a mixer local oscillator. This design using transistors, varactor diodes, etc to plete discrete ponents, and related design meet the design requirements. Keywords: sine wave oscillator varactor VCO1 正弦波壓控震蕩器介紹正弦波振蕩器的作用是產(chǎn)生頻率穩(wěn)定、幅度不變的正弦波輸出。武漢理工大學(xué)《高頻電子線路》課程設(shè)計(jì)說明書摘要隨著現(xiàn)代通信技術(shù)的發(fā)展，各種通信設(shè)備層出不窮，涉及信息收發(fā)的各種儀器在調(diào)制和解調(diào)過程中，都必須依靠高精度的振蕩源，否則信息將無法發(fā)送和接收，因而個(gè)正通信設(shè)備中幾乎都離不開高穩(wěn)定度的振蕩源。本次設(shè)計(jì)利用晶體管、變?nèi)荻O管等分立元件完成相關(guān)設(shè)計(jì)，并達(dá)到設(shè)計(jì)要求。LC最常用的電路是三點(diǎn)式，即LC回路的三個(gè)端點(diǎn)與晶體管的三個(gè)電極分別連接而成的電路。常用的兩種改進(jìn)型電容反饋的振蕩器為克拉潑振蕩器和西勒振蕩器。圖21 壓控振蕩器特性曲線圖21中,Uc為零時(shí)的角頻率ω0稱為自由振蕩角頻率；曲線在ω0處的斜率K0稱為控制靈敏度。通常單位為“dBmw”。6 3dB調(diào)制帶寬：是指特定用途的VCO在作調(diào)頻使用時(shí)，調(diào)制信號(hào)為1Vpp時(shí)，產(chǎn)生的調(diào)頻頻帶寬度，主要有雙端壓控作調(diào)頻時(shí)用戶的要求作出設(shè)計(jì) 正弦波壓控振蕩器設(shè)
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