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0.8~18 GHz超寬帶接收組件設(shè)計(jì)與實(shí)現(xiàn)
2022年電子技術(shù)應(yīng)用第2期
王 毅
中國西南電子技術(shù)研究所,,四川 成都610036
摘要: 設(shè)計(jì)了一種應(yīng)用于無線偵收系統(tǒng)的小型化超寬帶接收組件,在有限的體積內(nèi)集成了兩路變頻接收通道,、兩個(gè)本振源及一個(gè)校準(zhǔn)源。采用毫米波高本振的超外差二次變頻架構(gòu),,降低了組合干擾抑制的難度,。基于一系列多功能芯片進(jìn)行電路的小型化設(shè)計(jì),,腔體正面微波電路和反面控制電路通過通孔進(jìn)行互聯(lián),,有效減小了組件厚度和橫向尺寸。利用內(nèi)部校準(zhǔn)源產(chǎn)生信號,,通過ADC采集DLVA電壓進(jìn)而調(diào)節(jié)數(shù)控衰減器的方式,,可優(yōu)化雙通道增益及一致性等指標(biāo),基本可以做到免調(diào)試,,提高了批生產(chǎn)效率。
中圖分類號: TN851.4
文獻(xiàn)標(biāo)識碼: A
DOI:10.16157/j.issn.0258-7998.212007
中文引用格式: 王毅. 0.8~18 GHz超寬帶接收組件設(shè)計(jì)與實(shí)現(xiàn)[J].電子技術(shù)應(yīng)用,,2022,,48(1):146-151,156.
英文引用格式: Wang Yi. Design and implementation of a 0.8~18 GHz ultra-wideband receiver module[J]. Application of Electronic Technique,,2022,,48(1):146-151,156.
Design and implementation of a 0.8~18 GHz ultra-wideband receiver module
Wang Yi
Southwest China Institute of Electronic Technology,,Chengdu 610036,,China
Abstract: A miniaturized ultra-wideband receiver module is designed for electronic reconnaissance system in this paper. The receiver module contains two down-converter receiving channels, two LO synthesizers and a self-checking circuit in limited area. The module is of superheterodyne with twice frequency conversion by millimeter wave local oscillator,and the miniaturized circuits based on a series of multi-function MMICs are designed. To reduce the thickness and lateral dimensions,,the through holes between microwave circuits and control circuits are adopted for interconnection. To realize self-calibration function,,self-calibration synthesizer generates a signal,,and then the ADC collects the voltage of DLVA,finally the gain and the consistence of two receiving channel are optimized based on adjusting the digital attenuators. Through above steps, the receiver module is easily manufactured, thus batch production efficiency is improved.
Key words : ultra-wideband,;receiver,;miniaturization;self-calibration

0 引言

    超寬帶接收機(jī)主要應(yīng)用于電子對抗領(lǐng)域中,,特別是雷達(dá)對抗領(lǐng)域[1],。為了能偵收敵方的信息,需要接收的頻段盡可能寬,,因此偵察雷達(dá)往往需要接收機(jī)能跨倍頻程工作[2],。作為超寬帶接收機(jī)的核心組成部分,超寬帶接收組件需要將從天線接收到的射頻信號變頻至中頻信號,。隨著系統(tǒng)復(fù)雜度的提高[3-4],,一方面超寬帶接收組件需要具有超寬帶、大動(dòng)態(tài),、高靈敏度等性能[5-6],,另一方面還需要具備小型化、輕量化和通用化等特點(diǎn)[7-8],。

    傳統(tǒng)的超寬帶組件在電路實(shí)現(xiàn)時(shí)將0.8 GHz~18 GHz的頻帶劃分為若干個(gè)子頻帶(如0.8 GHz~6 GHz,、6 GHz~18 GHz)來分別進(jìn)行預(yù)選濾波和變頻,濾波器組合占用面積大,,頻綜種類多,,不利于實(shí)現(xiàn)組件的小型化。目前超寬帶組件實(shí)現(xiàn)小型化的方式主要有采用LTCC技術(shù)[9],、HTCC技術(shù)[10]及微波多層板技術(shù)[11],,前兩者存在成本和工藝問題,后者存在復(fù)雜的疊層設(shè)計(jì)和散熱問題,。本文在綜合考慮性能,、工藝和成本因素后,提出了一種超寬帶接收組件小型化設(shè)計(jì)方案,,并進(jìn)行了加工驗(yàn)證,。




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作者信息:

王  毅

(中國西南電子技術(shù)研究所,,四川 成都610036)




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