Wide-Passband Microstrip Filters With Wide Stopband Based on Half-Wavelength Resonators Coupled by Short Connected Line

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 : 2024-11-19 DOI:10.1155/mmce/7924319

Chunfeng Fan, Jiahui Han, Ke Gong, Xuehui Hu, Qing Liu, Yufang Liu

{"title":"Wide-Passband Microstrip Filters With Wide Stopband Based on Half-Wavelength Resonators Coupled by Short Connected Line","authors":"Chunfeng Fan, Jiahui Han, Ke Gong, Xuehui Hu, Qing Liu, Yufang Liu","doi":"10.1155/mmce/7924319","DOIUrl":null,"url":null,"abstract":"A novel and simple design method of wide-passband filters with wide stopband based on half-wavelength (λ/2) resonators coupled by a short connected line (SCL) is proposed and analysed in this paper. Different from the traditional parallel-coupled structure filters, SCL is proposed to realize a strong coupling between two adjacent resonators and suppress the parasitic passbands simultaneously. And the eigenmode analysis method and impedance ratio characteristics are both used to reveal the mechanism of wide-stopband implementation. To further expand the stopband, filters based on step-impedance resonators (SIRs) with SCL are proposed and analysed in detail. To verify the proposed design method and wide-stopband filtering structures, three 4-pole filters with uniform-impedance resonators (UIRs), SIRs with same impedance ratio, and SIRs with different impedance ratios are designed, fabricated, and measured. The proposed filters can realize a wide stopband up to 5.8f0 with rejection level better than 20 dB. Moreover, the proposed filters can easily realize a wide bandwidth.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/7924319","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of RF and Microwave Computer-Aided Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1155/mmce/7924319","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}

引用次数: 0

Abstract

A novel and simple design method of wide-passband filters with wide stopband based on half-wavelength (λ/2) resonators coupled by a short connected line (SCL) is proposed and analysed in this paper. Different from the traditional parallel-coupled structure filters, SCL is proposed to realize a strong coupling between two adjacent resonators and suppress the parasitic passbands simultaneously. And the eigenmode analysis method and impedance ratio characteristics are both used to reveal the mechanism of wide-stopband implementation. To further expand the stopband, filters based on step-impedance resonators (SIRs) with SCL are proposed and analysed in detail. To verify the proposed design method and wide-stopband filtering structures, three 4-pole filters with uniform-impedance resonators (UIRs), SIRs with same impedance ratio, and SIRs with different impedance ratios are designed, fabricated, and measured. The proposed filters can realize a wide stopband up to 5.8f₀ with rejection level better than 20 dB. Moreover, the proposed filters can easily realize a wide bandwidth.

Abstract Image

查看原文本刊更多论文

基于短连接线耦合半波长谐振器的宽带微带滤波器

本文提出并分析了一种基于半波长（λ/2）谐振器并通过短连接线（SCL）耦合的具有宽带止带的宽带滤波器的新颖而简单的设计方法。与传统的平行耦合结构滤波器不同，本文提出的 SCL 可实现相邻两个谐振器之间的强耦合，并同时抑制寄生通带。本文利用特征模式分析方法和阻抗比特性揭示了宽阻带实现的机理。为了进一步扩展阻带，我们提出了基于带 SCL 的阶跃阻抗谐振器（SIR）的滤波器，并对其进行了详细分析。为了验证所提出的设计方法和宽阻带滤波结构，我们设计、制造并测量了三个具有均匀阻抗谐振器（UIR）、相同阻抗比的 SIR 和不同阻抗比的 SIR 的四极滤波器。所提出的滤波器能实现高达 5.8f0 的宽阻带，抑制电平优于 20 dB。此外，所提出的滤波器还能轻松实现宽带宽。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.