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北京錦坤科技有限公司
主營(yíng)產(chǎn)品： 射頻光纖傳輸模塊-微波光纖傳輸模塊-RF over Fiber-微波光纖延遲線-雷達(dá)目標(biāo)模似器 |
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北京錦坤科技有限公司
主營(yíng)產(chǎn)品： 射頻光纖傳輸模塊-微波光纖傳輸模塊-RF over Fiber-微波光纖延遲線-雷達(dá)目標(biāo)模似器 |
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2012-10-31 閱讀(3475)
| 提 供 商 | 北京錦坤科技有限公司 | 資料大小 | 544.4KB |
|---|---|---|---|
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| 資料類型 | PDF 文件 | 瀏覽次數(shù) | 3475次 |
（詳見(jiàn)PDF文件）
摘 要：本文采用激光器、光調(diào)制器、可編程光纖延時(shí)陣列及光探測(cè)器等構(gòu)成了新型的微波光纖延遲線系統(tǒng)，對(duì)系統(tǒng)的發(fā)射、傳輸和接收三個(gè)組成模塊進(jìn)行了理論分析，建立了各模塊及系統(tǒng)的數(shù)學(xué)模型，對(duì)系統(tǒng)的傳輸特性和時(shí)延特性進(jìn)行了仿真。結(jié)果表明，此類微波光纖延遲線可視為線性系統(tǒng)。并采用矢量網(wǎng)絡(luò)分析儀對(duì)系統(tǒng)進(jìn)行了實(shí)測(cè)，幅頻特性和相頻特性在合理頻帶范圍內(nèi)均接近于理想情況，群時(shí)延測(cè)量結(jié)果與理論計(jì)算一致，延時(shí)精度達(dá)到10 ps以內(nèi)。
關(guān)鍵詞：微波光纖延遲線；相時(shí)延；群時(shí)延；矢量網(wǎng)絡(luò)分析儀
中圖分類號(hào)：TN253 TN929.1 文獻(xiàn)標(biāo)識(shí)碼：A 國(guó)家標(biāo)準(zhǔn)學(xué)科分類代碼：510.5020
Analysis and measurement of delay property for programmable
microwave fiber delay line
Zhang Chunxi, Zhang Xiaoqing, Hu Shuling, Chen Yinan, Hu Hanwei
（
Abstract：This paper presents a novel microwave fiber delay line system made up of a laser diode, an optical modulator, a programmable fiber delay array based on optical switches and a photoelectric detector. The emitting module, transfer module and receiving module are analyzed theoretically; the models of individual modules and the system are built. Simulation results of transmission property and delay property show that the system is linear. Measured by a vector network analyzer, the amplitude-frequency characteristics and phase-frequency characteristics of the system are both close to ideal condition in a reasonable frequency range. The measurement results of group delay accord with theoretical calculation compley. The time delay precision of the microwave fiber delay line is within 10 ps.
Key words：microwave fiber delay line; phase delay; group delay; vector network analyzer
