【摘要】：頻率合成器的問世激發(fā)了科研工作者巨大的熱情,以鎖相理論為基礎的新型頻率合成器得到了迅猛的發(fā)展,特別在雷達、通信設備、電子對抗等領域應用非常廣泛。本文詳細介紹了鎖相環(huán)頻率合成器的工作原理、基本結構及ADF4107的性能特點,同時結合項目需求,在C波段雷達接收機項目中,設計了項目中的關鍵模塊——頻率源。我們在項目中采用了鎖相環(huán)頻率合成方案(PLL),它的輸出頻率的頻譜純度高,而且很容易對所需輸出頻率進行程序控制,頻率穩(wěn)定度高,尤其是相位噪聲低,使用靈活、性能優(yōu)越等優(yōu)點,完全能夠滿足本課題來源C波段雷達接收機的頻率源技術指標,所以本文從以鎖相環(huán)技術為依據(jù)的頻率合成器出發(fā),設計了相應的實驗裝置來進行實驗驗證,主要是滿足了C波段雷達接收機的頻率源技術指標,并為項目的后續(xù)發(fā)展提供了實際經(jīng)驗和理論指導。
[Abstract]:The advent of frequency synthesizer has aroused great enthusiasm of researchers, and a new type of frequency synthesizer based on phase-locked theory has been developed rapidly, especially in the fields of radar, communication equipment, electronic countermeasure and so on. In this paper, the working principle, basic structure and performance characteristics of the PLL frequency synthesizer are introduced in detail. At the same time, according to the requirements of the project, the key module of the project, the frequency source, is designed in the C-band radar receiver project. We have adopted PLL Frequency Synthesis Scheme (PLL) in the project, its output frequency is of high frequency purity, and it is easy to program control the required output frequency, the frequency stability is high, especially the phase noise is low, the use is flexible. Because of its superior performance, it can fully meet the frequency source technical specifications of the C-band radar receiver. Therefore, based on the frequency synthesizer based on the phase-locked loop technology, a corresponding experimental device is designed to carry out the experimental verification. It mainly meets the technical specifications of frequency source of C-band radar receiver and provides practical experience and theoretical guidance for the future development of the project.
【學位授予單位】：蘭州大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN74

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本文編號：2137494