W波段宽带宽角低副瓣类喇叭天线稀布阵

doi:10.16180/j.cnki.issn1007-7820.2023.09.002

摘要/Abstract

摘要：

针对大损耗、制作工艺、T/R组件尺寸与通道数量以及位置等因素带来的W波段宽带宽角低副瓣相控阵天线设计难题,文中设计了一款在80~110 GHz频率范围内的宽带类喇叭天线单元,天线驻波比均小于1.8。在充分考虑T/R组件带来的布阵空间限制下,文中仅通过阵元位置优化设计了64元高增益低副瓣宽带宽角阵列天线,并为该阵列设计了小型低剖面空气波导馈电网络。仿真结果表明,64元稀布阵在±40°波束扫描范围内下增益高于22.6 dB,副瓣电平低于-6.2 dB,各阵元有源驻波比均小于2,证实该阵列天线具有宽带宽角、低副瓣、高增益、结构易于加工实现等优点,应用前景良好。

关键词: W波段, 低副瓣, 稀布阵, 方向图综合, 毫米波天线, 波束扫描, 宽频带, 遗传算法

Abstract:

In order to solve the design problem of wideband wide-angle low sidelobed phased array antenna caused by factors such as large loss, manufacturing process, T/R component size, number of channels and location, a wideband type horn antenna unit in the frequency range of 80~110 GHz is designed in this study, and the antenna standing wave ratio is less than 1.8. Considering the space limitation of T/R components, a 64-element high-gain, low-sidelobe, wide-band and wide-angle scanning array antenna is designed by optimizing the array position, and a small low-profile air waveguide feeding network is designed for the array. The simulation results show that the designed 64 element sparse array has the advantages of wide bandwidth, wide angle, low sidelobes, high gain, easy fabrication and realization, and the gain is higher than 22.6 dB, the sidelobes level is lower than -6.2 dB, and the active VSWR of each element is less than 2 under the scanning range of ±40°.

Key words: W band, low sidelobe, sparse array, pattern synthesis, millimeter wave antenna, beam scanning, broadband, genetic algorithm

中图分类号:

TN822

周彪,张帅,张德训,林志成,王建. W波段宽带宽角低副瓣类喇叭天线稀布阵[J]. 电子科技, 2023, 36(9): 8-14.

ZHOU Biao,ZHANG Shuai,ZHANG Dexun,LIN Zhicheng,WANG Jian. Design of Low Sidelobe W-Band Sparse Array Consists of Horn-Like Antenna[J]. Electronic Science and Technology, 2023, 36(9): 8-14.

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序号	X_i/mm	Y_i/mm	序号	X_i/mm	Y_i/mm
1	1.572 1	2.075 5	9	3.394 4	13.609 5
2	5.751 1	1.342 9	10	8.250 0	15.500 0
3	10.853 1	3.008 5	11	12.564 2	13.519 0
4	23.965 2	2.068 7	12	18.162 6	13.915 0
5	1.848 2	8.379 9	13	1.386 6	22.672 0
6	6.842 5	8.573 5	14	9.566 2	22.196 9
7	13.750 0	6.500 0	15	12.252 6	20.088 7
8	20.848 8	8.425 8	16	19.250 0	17.500 0

	扫描角度/(°)	实际增益/dB	MSLL/dB
法向	0	26.5	-13.8
	±15	26.1	-10.9
E面扫描	±30	24.2	-8.3
	±40	22.6	-6.2
	±15	25.9	-12.3
H面扫描	±30	24.8	-10.3
	±40	23.5	-8.6