A Ku Wideband Circularly Polarized Microstrip Antenna Array with Low Profile Crossed-Dipole Element

IF 1.2 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Antennas and Propagation Pub Date : 2023-05-19 DOI:10.1155/2023/6645672

Haipeng Liu, Yunhua Zhang, Xiaowen Zhao

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引用次数: 0

Abstract

This paper presents a novel Ku wideband circularly polarized (CP) antenna array composed of crossed-dipole element (CDE) and fed through sequential rotation (SR) feeding technique. Unlike the traditional CP-CDE fed by coaxial cable that usually works at low frequencies, the proposed CDE consists of two orthogonal heart-shaped patch dipoles that can work at frequencies as high as Ku-band, at the same time achieving a larger bandwidth. A feeding structure is proposed without welding, so potential errors in the antenna assembly process can be mitigated. A 2 × 2 CP antenna array with wideband SR feeding network is designed based on the CDE to further expand the axial ratio (AR) bandwidth. The designed antenna array is fabricated using the multilayer printed circuit board (PCB) technology and measured in anechoic chamber using the planar near-field measurement facility. The measured results show that −10 dB impedance bandwidth of 44% (11.6–18.15 GHz) along with 3 dB AR bandwidth of 38.7% (12–17.65 GHz) and 3 dB gain bandwidth of 34.6% (12.2–17.3 GHz) as well as 11.02 dBic peak gain have been achieved while maintaining a lower profile.

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一种低轮廓交叉偶极元的Ku宽带圆极化微带天线阵列

本文提出了一种新型的Ku宽带圆极化（CP）天线阵列，该阵列由交叉偶极子单元（CDE）组成，并通过顺序旋转（SR）馈电技术馈电。与通常在低频下工作的由同轴电缆馈电的传统CP-CDE不同，所提出的CDE由两个正交的心形贴片偶极子组成，它们可以在高达Ku波段的频率下工作，同时实现更大的带宽。提出了一种无需焊接的馈电结构，从而可以减轻天线组装过程中的潜在误差。A 2 × 基于CDE设计了具有宽带SR馈电网络的2 CP天线阵列，以进一步扩展轴比（AR）带宽。所设计的天线阵列采用多层印刷电路板（PCB）技术制造，并使用平面近场测量设备在消声室内进行测量。测量结果显示−10 44%的dB阻抗带宽（11.6–18.15 GHz）以及3 dB AR带宽38.7%（12–17.65 GHz）和3 34.6%的dB增益带宽（12.2–17.3 GHz）以及11.02 dBic峰值增益已经实现，同时保持较低的轮廓。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Antennas and Propagation ENGINEERING, ELECTRICAL & ELECTRONIC-TELECOMMUNICATIONS

CiteScore

3.10

自引率

13.30%

发文量

158

审稿时长

3.8 months

期刊介绍： International Journal of Antennas and Propagation publishes papers on the design, analysis, and applications of antennas, along with theoretical and practical studies relating the propagation of electromagnetic waves at all relevant frequencies, through space, air, and other media. As well as original research, the International Journal of Antennas and Propagation also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.