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一种一分八微带扇形功分器的设计与实现
电子技术应用 2023年9期
张丽娟
(中国西南电子技术研究所,四川 成都 610036)
摘要:针对毫米波大功率雷达导引头接收机易烧毁的难题,设计了一种工作在Ka频段的毫米波微带一分八扇形功分器,用于毫米波接收前端来实现抗烧毁和低噪声的功能。该功分器结构紧凑,具有小型化、低插损、相位一致性好的优点。将该功分器、超低噪声低噪放、限幅器和与之对应的八路合成器整体应用于接收前端,突破了毫米波大功率导引头的发展瓶颈,具有广阔的应用前景。
中图分类号:TN011.4 文献标志码:A DOI: 10.16157/j.issn.0258-7998.233841
中文引用格式:张丽娟. 一种一分八微带扇形功分器的设计与实现[J]. 电子技术应用,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

导引头[1-6]是安装在导弹上的目标跟踪装置,用来操纵导弹飞行。近年来,随着工程化程度不断深入,结合先进的毫米波制造加工工艺,毫米波机扫大功率导引头得到了飞速发展。而低噪声放大器是导引头接收系统的关键部件,在导引头中处于开关和限幅器之后,接收来自雷达目标的回波信号,在发射期承受来自发射机的泄露信号,处于复杂的电磁兼容环境之中。

在毫米波大功率导引头中,由于低噪声放大器本身能够承受的最大输入功率均比较小,一般为十几dBm即几十毫瓦[7-8],而发射机所发射的信号可能超过几百瓦,这样,发射的信号很有可能会通过天线、环形器或开关泄露到接收机中,从而烧毁低噪声放大器。与此同时,接收前端也需要低损耗低噪声,并且接收前端的动态范围[9]直接影响导引头的抗干扰能力[10-11]和盲区距离[12]。



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作者信息:

张丽娟

(中国西南电子技术研究所,四川 成都 610036)


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