W-Band Low-Sidelobe Series-Fed Slot Array Antenna Based on Groove Gap Waveguide

Yue, Jiaxuan; Zhou, Chengmian; Xiao, Ke; Ding, Liang; Chai, Shugen

doi:10.1109/lawp.2022.3228115

Cited by 7 publications

(1 citation statement)

References 18 publications

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“…Arrays that utilize a series feed configuration present notable advantages such as high efficiency and structural simplicity. Nonetheless, intrinsic limitations in their feed structures typically confine them to a working bandwidth of less than 3% [3][4][5][6][7]. For applications necessitating broader bandwidths, it becomes imperative to employ a composite network that utilizes parallel feeding mechanisms [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A High-gain Low-sidelobe Dual-polarized Broadband Array Antenna

Zhou,

Zhang,

Liu

et al. 2024

ACES Journal

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In this paper, we present a dual-polarized broadband low side lobe array designed for operation in the Ku-band. The antenna array operates within the frequency range of 14.0 GHz to 15.2 GHz, covering a bandwidth of over 8%. To realize this wide operational frequency, we have selected broadband microstrip antenna elements as the units of the array. In order to fulfill the demanding criteria of broadband performance and low sidelobe characteristics, we introduce a broadband low-sidelobe feeding network based on a directional coupler design. This feeding network ensures connectivity with the antenna units, resulting in a voltage standing wave ratio (VSWR) < 2 within the 14.0 GHz to 15.2 GHz frequency range. Furthermore, our antenna array achieves an array gain exceeding 21 dBi and keeps array sidelobes below -20 dB across the entire operating frequency band. Our research breakthrough addresses the critical design challenge of creating large-scale array antennas that combine broadband capabilities with high gain and minimal sidelobe interference.

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