双向辐射双频低轮廓混合天线

IF 4.8 2区 计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Wenqing Liu;Shufang Li;Lijie Chen;Chen Zhang;Meijun Qu;Li Deng
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引用次数: 0

摘要

这封信提出了一种新型的双频、低轮廓混合折叠天线,能够产生双向独立波束。该设计在低频段作为类折叠反射天线,在下半球产生x偏振高增益波束,在高频段作为折叠发射阵列天线,在上半球产生y偏振高增益波束。设计、制作并测量了双频混合折叠天线的原型。测量结果表明,在29 GHz时,上半球产生y偏振光束,最大增益为31.2 dBi,峰值孔径效率为35.5%,3db增益带宽为8.2%。同时,下半球产生x偏振波束,在12.7 GHz时最大增益为22.9 dBi,峰值孔径效率为28.9%,3db增益带宽为26.3%。该天线保留了传统折叠天线的低轮廓和高增益的优点,解决了空间利用的限制,有效扩展了传统单向双频折叠结构,支持双向运行。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dual-Band Low-Profile Hybrid Antenna for Bidirectional Radiation
This letter presents a novel dual-band, low-profile hybrid folded antenna capable of generating bidirectional independent beams. The proposed design operates as a liked-folded reflectarray antenna at the low band, producing x-polarized high-gain beams in the lower hemisphere, and as a folded transmitarray antenna at the high band, generating y-polarized high-gain beams in the upper hemisphere. A prototype of the dual-band hybrid folded antenna was designed, fabricated, and measured. Measurement results show a y-polarized beam in the upper hemisphere, with a maximum gain of 31.2 dBi at 29 GHz, a peak aperture efficiency of 35.5%, and a 3 dB gain bandwidth of 8.2%. Simultaneously, an x-polarized beam is generated in the lower hemisphere, exhibiting a maximum gain of 22.9 dBi at 12.7 GHz, a peak aperture efficiency of 28.9%, and a 3 dB gain bandwidth of 26.3%. The proposed antenna retains the low-profile and high-gain advantages of traditional folded antennas, addressing space utilization limitations, effectively extending the conventional unidirectional dual-band folded structure to support bidirectional operation.
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来源期刊
CiteScore
8.00
自引率
9.50%
发文量
529
审稿时长
1.0 months
期刊介绍: IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.
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