A high gain filtenna with radiation nulls using a novel split-merge feed line on a slot-loaded rectangular patch for X-band RADAR application

IF 3 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-04-11 DOI:10.1016/j.aeue.2025.155789

Ramkumar S., Saravanan M., Saran S., Sibi Varshith S.

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引用次数: 0

Abstract

This study presents a single-layer microstrip filtenna designed to achieve a high gain performance. The design incorporates a slot-loaded rectangular patch along with a defected ground structure (DGS). The design of antenna-1 begins with a rectangular patch that includes four vias, a rectangular ring slot and two triangular slots in the ground structure. For improved bandwidth and enhanced filtering performance, antenna-2 employs a unique split-merge feeding approach, incorporating a rectangular slot into the antenna-1 structure. For the proposed filtenna, two rectangular parasitic patches are placed on either side of the split-merge feedline, with a diamond-shaped slot inserted in the middle of the patch in the antenna-2 for improved upper stopband rejection and less reflection coefficient. The proposed antenna ensures accurate frequency selectivity and effective radiation performance by utilizing the TM₁₀ and TM₁₁ resonant modes. The antenna is developed, fabricated, and tested experimentally on Rogers 4003C material. The proposed filtenna’s measured results show that its radiation nulls in the lower and upper rejection bands are

- 25.19

dB and

- 35.01

dB, respectively, a reflection coefficient less than

- 14

dB and a peak gain of 11 dB. Its overall dimensions measure

60 \times 46 \times 0.8

mm³.

查看原文本刊更多论文

一种具有辐射零点的高增益滤波天线，采用一种新颖的分路合并馈线，在一个槽加载的矩形贴片上，用于x波段雷达

本研究提出了一种单层微带滤波器，以实现高增益性能。该设计结合了一个槽加载矩形贴片以及一个缺陷地面结构（DGS）。天线1的设计从一个矩形贴片开始，包括四个过孔，一个矩形环形槽和两个三角形槽在地面结构中。为了提高带宽和增强滤波性能，天线2采用独特的分合并馈电方法，将矩形槽合并到天线1结构中。对于所提出的滤波器，在分合馈线的两侧放置两个矩形寄生斑，在天线2的斑中间插入一个菱形槽，以提高上阻带抑制和降低反射系数。该天线利用TM10和TM11谐振模式，保证了精确的频率选择性和有效的辐射性能。该天线是在罗杰斯4003C材料上开发、制造和实验测试的。测量结果表明，该滤波器在上下抑制带的辐射零值分别为- 25.19 dB和- 35.01 dB，反射系数小于- 14 dB，峰值增益为11 dB。其整体尺寸为60×46×0.8 mm3。

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

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.