双频段、高增益、超低副瓣毫米波面天线

doi:10.12305/j.issn.1001-506X.2025.06.05

Abstract

Abstract:

Low sidelobes, especially ultra-low sidelobes, are always a challenge in antenna design. For the millimeter wave antennas, they also bring about difficulties in manufacturing, uncertainty in machining inaccu-racy, large loss and so on. With a special design from antenna implementation, feed, reflector structure and configuration, etc, a reflector antenna that can operate simultaneously in the w (51.26-58.0 GHz) and Ka frequency bands (22.24-31.4 GHz) is fabricated. The measured sidelobe levels of w and Ka frequency bands are less than -50 dB and -35 dB and the antenna gains at the center frequency reached 40.1 dBi and 35.0 dBi respectively. The design principles and the design processes as well as simulated and measured results are presented in this paper. The results are analyzed and compared with each other, and the basic consistence between them validates the correctness of the design process and the practicality of the design result.

Key words: ultra-low sidelobe, millimeter wave, dual frequency band, high gain, reflector

CLC Number:

TN823

Shanhong HE, Wenhao JIANG, Mankun CHEN, Xianliang HAN. Dual-frequency band millimeter reflector antenna with high gain and ultra-low sidelobe level[J]. Systems Engineering and Electronics, 2025, 47(6): 1768-1777.

Figures/Tables 15

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频带	频率/GHz	增益/dBi	半功率波束宽度/(°)	副瓣/dB	天线效率/%
Ka	22.24	33.0 / 34.3	4.0 / 4.0	< -35	57.5 / 77.6
	26.82	35.0 / 35.8	3.8 / 3.8	< -35	59.3 / 71.0
	31.40	35.2 / 36.8	3.3 / 3.3	< -35	43.2 / 60.9
w	51.26	39.3 / 40.1	2.0 / 2.0	< -50	36.3 / 43.6
	54.60	40.1 / 40.7	2.0 / 2.0	< -50	37.3 / 42.8
	58.00	40.5 / 40.9	1.8 / 1.8	< -50	39.0 / 39.0

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Dual-frequency band millimeter reflector antenna with high gain and ultra-low sidelobe level

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