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重頻超寬帶脈沖對混頻器的干擾特征分析
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西北核技術(shù)研究所,西北核技術(shù)研究所

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Interference Effects of Repetitive Ultra-wideband Pulses on Mixer
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    摘要:

    重頻超寬帶脈沖可對多種電子設備與電子器件產(chǎn)生干擾。針對電子器件的干擾效應,著(zhù)重從仿真分析和實(shí)驗兩方面研究了重頻超寬帶脈沖對無(wú)源混頻器的干擾特征。分析了混頻器對超寬帶脈沖信號的響應特性,給出了不同參數條件下重頻超寬帶脈沖信號對混頻器及混頻濾波電路的干擾特征。研究表明,作為干擾信號,重頻超寬帶脈沖信號并不能影響混頻器正常工作;當重頻超寬帶脈沖信號與通信信號一起注入混頻器時(shí),混頻器可實(shí)現其正常的變頻功能,而作為衡量混頻器工作性能的重要指標,變頻損耗可認為基本不變;重頻超寬帶脈沖信號經(jīng)過(guò)混頻濾波電路后變?yōu)橥蓄l信號同樣頻率的連續波信號,其對混頻濾波電路的干擾以及之后電路的干擾類(lèi)似定頻連續波信號干擾。

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    Repetitive ultra-wideband pulses can interfere many kinds of electronic devices. For the interference effect on electronic devices, this paper mainly studied interference characteristics of repetitive ultra-wideband pulses on passive mixer through simulation analysis and experiments. The mixer response characteristics to repetitive ultra-wideband pulses are analyzed in this paper, and interference characteristics of the mixed filtering circuits caused by repetitive ultra-wideband pulses of different parameters are manifested. According to the study, repetitive ultra-wideband pulses can’t interfere the mixer while working as interfering signal. When repetitive ultra-wideband pulses and communication signals are injected to the mixer together, frequency conversion function of the mixer can be achieved, and as an important indicator to measure the service behavior of the mixer, the converter conversion loss can be basically considered to maintain invariable. Repetitive ultra-wideband pulses turn into a continuous wave which shares the same frequency as IF signal after passing the mixed filtering circuits, whose interference to the mixed filtering circuits and the circuits after is similar to a fixed frequency continuous wave signal interference.

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張永棟,徐敏杰.重頻超寬帶脈沖對混頻器的干擾特征分析計算機測量與控制[J].,2018,26(7):295-301.

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歷史
  • 收稿日期:2018-04-25
  • 最后修改日期:2018-05-17
  • 錄用日期:2018-05-18
  • 在線(xiàn)發(fā)布日期: 2018-07-26
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