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一種一分八微帶扇形功分器的設(shè)計與實現(xiàn)
電子技術(shù)應(yīng)用 2023年9期
張麗娟
(中國西南電子技術(shù)研究所,四川 成都 610036)
摘要: 針對毫米波大功率雷達導(dǎo)引頭接收機易燒毀的難題,設(shè)計了一種工作在Ka頻段的毫米波微帶一分八扇形功分器,用于毫米波接收前端來實現(xiàn)抗燒毀和低噪聲的功能。該功分器結(jié)構(gòu)緊湊,具有小型化、低插損、相位一致性好的優(yōu)點。將該功分器、超低噪聲低噪放、限幅器和與之對應(yīng)的八路合成器整體應(yīng)用于接收前端,突破了毫米波大功率導(dǎo)引頭的發(fā)展瓶頸,具有廣闊的應(yīng)用前景。
中圖分類號:TN011.4 文獻標(biāo)志碼:A DOI: 10.16157/j.issn.0258-7998.233841
中文引用格式: 張麗娟. 一種一分八微帶扇形功分器的設(shè)計與實現(xiàn)[J]. 電子技術(shù)應(yīng)用,2023,49(9):5-8.
英文引用格式: Zhang Lijuan. Design and implementation of a one-eighth sector fan-shaped power divider[J]. Application of Electronic Technique,2023,49(9):5-8.
Design and implementation of a one-eighth sector fan-shaped power divider
Zhang Lijuan
(Southwest China Institute of Electronic Technology, Chengdu 610036, China)
Abstract: In order to solve the problem that the receiver of millimeter-wave high-power radar seeker is easy to burn, this paper designs a millimeter-wave microstrip one-divided-eight-sector fan-shaped power divider working in Ka band, which is used in millimeter wave receiving front-end to achieve the function of anti-burning and low noise. The power divider has a compact structure, and has the advantages of miniaturization, low insertion loss and good phase consistency. The power divider, ultra-low noise and low noise amplifier, limiter and its corresponding eight-channel synthesizer are applied to the receiving front-end as a whole, which breaks the bottleneck of the development of millimeter wave high-power seeker and has broad application prospects.
Key words : millimeter-wave high-power radar seeker;one-eighth sector fan-shaped power divider;miniaturization;low insertion loss;consistent phase;receiving front end

0 引言

導(dǎo)引頭[1-6]是安裝在導(dǎo)彈上的目標(biāo)跟蹤裝置,用來操縱導(dǎo)彈飛行。近年來,隨著工程化程度不斷深入,結(jié)合先進的毫米波制造加工工藝,毫米波機掃大功率導(dǎo)引頭得到了飛速發(fā)展。而低噪聲放大器是導(dǎo)引頭接收系統(tǒng)的關(guān)鍵部件,在導(dǎo)引頭中處于開關(guān)和限幅器之后,接收來自雷達目標(biāo)的回波信號,在發(fā)射期承受來自發(fā)射機的泄露信號,處于復(fù)雜的電磁兼容環(huán)境之中。

在毫米波大功率導(dǎo)引頭中,由于低噪聲放大器本身能夠承受的最大輸入功率均比較小,一般為十幾dBm即幾十毫瓦[7-8],而發(fā)射機所發(fā)射的信號可能超過幾百瓦,這樣,發(fā)射的信號很有可能會通過天線、環(huán)形器或開關(guān)泄露到接收機中,從而燒毀低噪聲放大器。與此同時,接收前端也需要低損耗低噪聲,并且接收前端的動態(tài)范圍[9]直接影響導(dǎo)引頭的抗干擾能力[10-11]和盲區(qū)距離[12]。



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作者信息:

張麗娟

(中國西南電子技術(shù)研究所,四川 成都 610036)


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