Development of a High-Efficiency Circularly Polarized Ka-Band Satcom Antenna Utilizing Ridge-Loaded U-Shaped Radiator

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-11-25 DOI:10.1109/LAWP.2024.3506452

Raha Roosefid;Sadegh Mansouri Moghaddam;Lukas Nyström;Jian Yang;Ashraf Uz Zaman

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引用次数: 0

Abstract

This letter presents a low-profile, high-gain cavity-backed slot array antenna, based on ridge gap waveguide (RGW) technology, to operate within the Ka frequency band. The antenna array consists of two layers. The upper layer incorporates an array of U-shaped slots, positioned over a cavity loaded with a metal ridge section, while the lower layer is a RGW corporate distribution network, feeding each of the cavity-backed slots separately with equal phase and amplitude. The proposed array antenna radiates circularly polarized waves (axial ratio below 3

$ \text{ dB}$

) over a bandwidth of 8.6

$ \%$

ranging from 27.5

$ $

GHz to 30

$ \, \text{ GHz}$

. At the centre frequency of 28.75 GHz, the peak gain at the broadside direction is 27

$ \text{ dBi}$

and the first relative sidelobe level is below −13

$ \text{ dB}$

. The total size of the proposed 8 × 8

$ $

-element array antenna is 6.7

$ \lambda _{0} \times $

6.5

$ \lambda _{0} \times $

1.4

$ \lambda _{0} $

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

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.