本文選題：瞬時(shí)測(cè)頻　切入點(diǎn)：射頻前端　出處：《電子科技大學(xué)》2015年碩士論文

【摘要】：瞬時(shí)測(cè)頻技術(shù)作為一項(xiàng)重要的能夠應(yīng)用于現(xiàn)代電子戰(zhàn)中的技術(shù),在經(jīng)過(guò)很多年的發(fā)展之后逐漸成熟。在現(xiàn)代電子戰(zhàn)和復(fù)雜的電磁環(huán)境下,如果能夠從敵方發(fā)出的信號(hào)中提取出各種雷達(dá)的復(fù)雜參數(shù),并掌握這些信息就有可能在戰(zhàn)爭(zhēng)中占據(jù)優(yōu)勢(shì)。測(cè)頻方法有很多,干涉儀比相法瞬時(shí)測(cè)頻是經(jīng)典的方法之一,它的核心思想是對(duì)信號(hào)進(jìn)行頻率、相位和幅度的變換,也就是說(shuō)由測(cè)量到的幅度值反過(guò)來(lái)推出它的頻率值�；诟缮鎯x比相法的瞬時(shí)測(cè)頻技術(shù)具有良好的瞬時(shí)性,所以能夠在工程實(shí)際中得到廣泛的應(yīng)用。本文的研究重點(diǎn)是多通道的射頻前端,在設(shè)計(jì)過(guò)程中實(shí)現(xiàn)了三路輸出的寬帶接收前端,頻率范圍為1~2000 MHz,該方案能較好的實(shí)現(xiàn)射頻前端性能的要求,整個(gè)電路由帶通濾波器、帶阻濾波器、梳狀線帶通濾波器、寬帶威爾金森功分器、平衡放大器、均衡器、反饋放大器等部件組成。模塊性能的好壞取決于其整體的性能,所以首先需要對(duì)射頻前端的各項(xiàng)指標(biāo)進(jìn)行分解設(shè)計(jì),選取能夠達(dá)到指標(biāo)的高性能元件,然后將元件的指標(biāo)帶入仿真電路的軟件中,驗(yàn)證所選的元件是不是符合指標(biāo)要求。詳盡的說(shuō)明了驗(yàn)證方式和元件的選取依據(jù)。對(duì)于該模塊的關(guān)鍵部件我們進(jìn)行了設(shè)計(jì)和仿真,各項(xiàng)指標(biāo)均能達(dá)到要求,性能良好。對(duì)于測(cè)頻測(cè)向技術(shù)來(lái)說(shuō),幅度相位一致性和幅度一致性是重要的設(shè)計(jì)指標(biāo),這也是在測(cè)試和調(diào)試過(guò)程中遇到的問(wèn)題之一,經(jīng)過(guò)反復(fù)調(diào)試最終圓滿解決了問(wèn)題。
[Abstract]:As an important technology that can be used in modern electronic warfare, instantaneous frequency measurement technology has matured gradually after many years of development. In modern electronic warfare and complex electromagnetic environment, If the complex parameters of various radars can be extracted from the signals sent by the enemy, and the information can be grasped, it will be possible to occupy an advantage in the war. There are many methods for frequency measurement, and the interferometer phase comparison method is one of the classical methods for instantaneous frequency measurement. Its core idea is to transform the frequency, phase and amplitude of the signal, that is, to deduce its frequency value from the measured amplitude. So it can be widely used in engineering practice. The research focus of this paper is the multi-channel RF front-end. In the design process, the three-way output broadband receiver front-end is realized. The frequency range is 1 ~ 2 000 MHz. This scheme can meet the requirements of RF front-end performance. The whole circuit consists of band-pass filter, band-stop filter, comb line-band-pass filter, wideband Wilkinson power divider, balance amplifier, equalizer, etc. The performance of the module depends on its overall performance, so it is necessary to decompose each index of the RF front end and select the high performance component that can reach the target. Then the index of the component is introduced into the software of the simulation circuit to verify whether the selected component meets the requirements of the index. The verification method and the selection basis of the component are explained in detail. The key components of the module are designed and simulated. For frequency direction finding technology, amplitude phase consistency and amplitude consistency are important design indexes, which are also one of the problems encountered in the process of testing and debugging. After repeated debugging, the problem was solved satisfactorily.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM935.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 丘春輝;陳向東;沈冰;;射頻功率放大器前饋線性化技術(shù)研究[J];微電子學(xué)與計(jì)算機(jī);2008年11期

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本文編號(hào)：1676283