Wideband and low-profile beam-tilted H-plane horn array based on MMPTE

IF 1.1 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Microwaves Antennas & Propagation Pub Date : 2022-12-26 DOI:10.1049/mia2.12332

Yun Zhao, Aizhong Wang, Fan Ye, Jiangqiao Ding, Geyi Wen

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Abstract

A wideband and low-profile H-plane horn antenna array is proposed to achieve a tilted-beam in H-plane based on the theory of maximum power transfer efficiency (method of maximum power transfer efficiency (MMPTE)), which is built on bent corrugated substrate integrated waveguide structure. The horn array is implemented in the substrate with the thickness of 0.13 $λ_{0}$ at the centre frequency. The arc-shaped aperture is employed to achieve smooth transition from horn aperture to the free space, which also improve the front-to-back ratio of the radiation pattern. In order to realise a tilted-beam, MMPTE is used to obtain the excitation distribution of array elements. A double-layer butler matrix feed network is built based on the calculated excitation, maintaining the characteristic of broadband and miniaturisation simultaneously. Measured VSWR parameter of the proposed antenna is less than 2.0 from 6 to 18 GHz. The antenna achieves a beam titling of ±6° in H-plane. It is observed that the measured results agree well with the simulated ones.

Abstract Image

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基于MMPTE的宽带低剖面波束倾斜H平面喇叭阵列

基于最大功率传输效率理论（MMPTE），提出了一种基于弯曲波纹衬底集成波导结构的宽带低剖面H平面喇叭天线阵列，以实现H平面内的倾斜波束。喇叭阵列在中心频率下厚度为0.13λ0$｛\boldsymbol｛\lang1033\lang1033λ｝_｛\mathbf｛0｝｝$的衬底中实现。采用弧形孔径实现了从喇叭孔径到自由空间的平滑过渡，也提高了辐射方向图的前后比。为了实现倾斜波束，使用MMPTE来获得阵列元件的激励分布。在计算激励的基础上，建立了双层管家矩阵馈电网络，同时保持了宽带化和小型化的特点。所提出的天线的VSWR参数在6到18GHz之间的测量值小于2.0。天线在H平面内实现了±6°的波束倾斜。实测结果与模拟结果吻合良好。

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来源期刊

Iet Microwaves Antennas & Propagation 工程技术-电信学

CiteScore

4.30

自引率

5.90%

发文量

109

审稿时长

7 months

期刊介绍： Topics include, but are not limited to: Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques. Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas. Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms. Radiowave propagation at all frequencies and environments. Current Special Issue. Call for papers: Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf