Design of Filtering Coupler Based on Patch Resonator with High Selectivity

IF 0.9 4区工程技术 Q4 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-08-10 DOI:10.1155/2023/2437462

Xu Shi, Qian Zhang, Shuokun Ma, Hanqian Zhang, Xiang Gao, Rui Li, Gang Zhang

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Abstract

In this paper, a new approach for designing a planar high frequency selectivity filtering coupler based on a circular patch resonator is proposed. In order to explain the operating principle, the resonant property of the circular patch resonator has been investigated firstly. Two circular patch resonators connected by two microstrip lines are used in this design. A filtering coupler is achieved by adjusting the feeder position and the length and width of the microstrip line used to connect the two resonators. Without additional circuits, the desired 0° and 180° phase differences are realized by the inherent in-phase and out-of-phase characteristics of E-fields at the TM11 mode. To improve the passband selectivity, transmission zeros are created by introducing a coupling between the source and load through the coupling slots etched on the ground. Finally, a prototype of the filtering coupler centered at 2.12 GHz is designed, implemented, and tested, while the measured results coincide well with simulated ones, verifying the proposed design concept.

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基于高选择性贴片谐振器的滤波耦合器设计

本文提出了一种基于圆形贴片谐振器的平面高频选择性滤波耦合器的设计方法。为了解释其工作原理，首先研究了圆形贴片谐振器的谐振特性。设计中使用了由两条微带线连接的两个圆形贴片谐振器。滤波耦合器是通过调整馈线位置以及用于连接两个谐振器的微带线的长度和宽度来实现的。在没有附加电路的情况下，TM11模式下E场的固有同相和异相特性实现了所需的0°和180°相位差。为了提高通带选择性，通过在地上蚀刻的耦合槽在源和负载之间引入耦合来创建传输零点。最后，以2.12为中心的滤波耦合器的原型设计、实现和测试了GHz，测量结果与模拟结果吻合良好，验证了所提出的设计理念。

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 RF and Microwave Computer-Aided Engineering 工程技术-工程：电子与电气

CiteScore

4.00

自引率

23.50%

发文量

489

审稿时长

3 months

期刊介绍： International Journal of RF and Microwave Computer-Aided Engineering provides a common forum for the dissemination of research and development results in the areas of computer-aided design and engineering of RF, microwave, and millimeter-wave components, circuits, subsystems, and antennas. The journal is intended to be a single source of valuable information for all engineers and technicians, RF/microwave/mm-wave CAD tool vendors, researchers in industry, government and academia, professors and students, and systems engineers involved in RF/microwave/mm-wave technology. Multidisciplinary in scope, the journal publishes peer-reviewed articles and short papers on topics that include, but are not limited to. . . -Computer-Aided Modeling -Computer-Aided Analysis -Computer-Aided Optimization -Software and Manufacturing Techniques -Computer-Aided Measurements -Measurements Interfaced with CAD Systems In addition, the scope of the journal includes features such as software reviews, RF/microwave/mm-wave CAD related news, including brief reviews of CAD papers published elsewhere and a "Letters to the Editor" section.