本文選題：矢量網(wǎng)絡分析儀　切入點：噪聲測量　出處：《中國測試》2017年08期

【摘要】：為解決矢網(wǎng)中噪聲選件的計量問題,分析當前該類產(chǎn)品的測量原理,指出現(xiàn)有校準方法無法對矢網(wǎng)中噪聲選件開展計量的原因。參照當前矢網(wǎng)的校準方法,提出一種整體校準方案,并報道該方案的基本要求。基于無源器件的噪聲穩(wěn)定特點,提出失配空氣線和衰減器作為檢驗件的新型實現(xiàn)形式。在對比分析現(xiàn)有矢量和標量兩種方法無源器件噪聲標準值計算方法的基礎上,報道檢驗件標準值包含溫度信息的矢量計算方法。通過檢驗件與低噪聲放大器級聯(lián)的方式,實現(xiàn)矢網(wǎng)中噪聲選件的整體校準。該方案分別在Keysight公司和RS公司的產(chǎn)品中進行試驗,測量頻段6~18 GHz,校準結果的偏差分別為0.4 dB和0.6 dB。
[Abstract]:In order to solve the measurement problem of noise selection in vector network, this paper analyzes the measuring principle of this kind of products, and points out the reason why the existing calibration methods can not measure the noise selection in vector net.According to the current calibration method of vector network, a whole calibration scheme is proposed, and the basic requirements of the scheme are reported.Based on the characteristics of noise stability of passive devices, a new realization of mismatched air lines and attenuators is proposed.On the basis of comparing and analyzing the existing vector and scalar methods for calculating the noise standard values of passive devices, a vector calculation method containing temperature information is reported.The whole calibration of noise selection in vector network is realized by cascading the detector and low noise amplifier.The scheme has been tested in the products of Keysight and RS companies, and the calibration results are 0.4 dB and 0.6 dB, respectively.
【作者單位】： 中國電子科技集團公司第十三研究所;羅德與施瓦茨(中國)科技有限公司;
【分類號】：TB9;TM935
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本文編號：1727367