一種一分八微帶扇形功分器的設計與實現
電子技術應用 2023年9期
張麗娟
(中國西南電子技術研究所,四川 成都 610036)
摘要: 針對毫米波大功率雷達導引頭接收機易燒毀的難題,設計了一種工作在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抗燒毀和低噪聲的功能。該功分器結構緊湊,具有小型化、低插損、相位一致性好的優點。將該功分器、超低噪聲低噪放、限幅器和與之對應的八路合成器整體應用于接收前端,突破了毫米波大功率導引頭的發展瓶頸,具有廣闊的應用前景。
中圖分類號:TN011.4 文獻標志碼: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計與實現[J]. 電子技術應用,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.
中文引用格式: 張麗娟. 一種一分八微帶扇形功分器的設計與實現[J]. 電子技術應用,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
導引頭[1-6]是安裝在導彈上的目標跟蹤裝置,用來操縱導彈飛行。近年來,隨著工程化程度不斷深入,結合先進的毫米波制造加工工藝,毫米波機掃大功率導引頭得到了飛速發展。而低噪聲放大器是導引頭接收系統的關鍵部件,在導引頭中處于開關和限幅器之后,接收來自雷達目標的回波信號,在發射期承受來自發射機的泄露信號,處于復雜的電磁兼容環境之中。
在毫米波大功率導引頭中,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],而發射機所發射的信號可能超過幾百瓦,這樣,發射的信號很有可能會通過天線、環形器或開關泄露到接收機中,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范圍[9]直接影響導引頭的抗干擾能力[10-11]和盲區距離[12]。
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作者信息:
張麗娟
(中國西南電子技術研究所,四川 成都 610036)
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