天线快速测量方法地研究.pdf

Abstract Inthene褂field砌e皿a measurement,the timerequired by thesingle probe mechanlcal sc踟1ing es prohibitively near-field measurement system based on tne modulmion scattering technique can improve precision of measurement·In thlspaper, development ofnear-field antenna measurement and basic theory ofmodulmed scatter near-fieldmeaSurement are researching on how tofastmeasure antenna,a method of fastmeasurement antenna fastmeasurement antenna system use probe array tomechanical scala,signals received by probes are modulated by mlc∞waVe circuits,and modulated signals are sent toreceiver. printed dipole asthe element ofprobe dipole has themeritS of simple structure and easy isused as received antenna m the measurement system,so it should have paper introduces thebroadband techn0109y ofmicrostrip antenna andanalyzes the single-polarized printed dipole·On thls printed dipole array IS alineara仃ay’ el锄ents are f- printed distance ofdipole isoptimized inorder toreduce theimpact ofmutual coupling between elements· Probe arr钾call receive many signals from each element·Microwave signals are modulated aIld sent work analyzer circuits use mlcrowave switch chip,and TTL imported as modulation many channel slgnals are imponed toreceiver,a Wilkinsonpower divider Was used toconnect circults and power divider use microstrip linestructureandimpedance tr锄slo咖atlon 11ne uses thefom arc can reduce theinputVSWR,broaden theworking balld and deerease theimpact ofmutual coupling. Keyword:near-field measurement modulated circuits array antenna coupling 创新性声明本人声明所呈交的论文是我个人在导师指导下进行的研究工作及取得的研究成果。尽我所知,除了文中特别加以标注和致谢中所罗列的内容以外,论文中不包含其他人已经发表或撰写过的研究成果;也不包含为获得西安电子科技大学或其它教育机构的学位或证书而使用过的材料。与我一同工作的同志对本研究所做的任何贡献均已在论文中做了明确的说明并表示了谢意。申请学位论文与资料若有不实之处,本人