Compact Wide-Stopband QMSIW-Based BPF for X-Band Applications

IF 1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Microwave and Optical Technology Letters Pub Date : 2024-11-07 DOI:10.1002/mop.70018

Amrita Medda, Amit R. Azad, Gunjan Srivastava, Akhilesh Mohan, Manoranjan Sinha

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引用次数: 0

Abstract

A novel and compact two-pole quarter mode substrate integrated waveguide (QMSIW) based bandpass filter with ultra-wide stopband characteristics (rejection level > 20 dB, up to 4.05f₀, where f₀ is the center frequency of the bandpass filter) is designed and developed in this paper. The designed second-order filter comprises of two circular QMSIW cavity resonators. The filter is designed using the dominant TM₀₁₀ mode of the circular SIW cavity. The TM₀₁₀ modes of cavities are coupled through the arc-shaped slot etched in the middle layer. To verify the present design methodology, a second-order bandpass filter is fabricated and its characteristics are measured. The designed bandpass filter shows outstanding performance in terms of good fractional bandwidth of 14.45%, lower insertion loss of 2 dB and wider stopband behavior (rejection better than 20 dB up to 4.05f₀) in a given footprint. The experimental results of the filter matches well the EM-simulated ones.

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用于 X 波段应用的基于 QMSIW 的紧凑型宽带 BPF

本文设计并开发了一种新型、紧凑的基于二极四分之一模基底集成波导（QMSIW）的带通滤波器，它具有超宽阻带特性（抑制水平 > 20 dB，最高可达 4.05f0，其中 f0 为带通滤波器的中心频率）。所设计的二阶滤波器由两个圆形 QMSIW 腔谐振器组成。滤波器是利用圆形 SIW 腔的主导 TM010 模式设计的。空腔的 TM010 模式通过蚀刻在中间层的弧形槽耦合。为了验证本设计方法，我们制作了一个二阶带通滤波器，并对其特性进行了测量。所设计的带通滤波器性能出众，在给定的基底面上具有良好的分数带宽（14.45%）、较低的插入损耗（2 dB）和较宽的阻带特性（在 4.05f0 时抑制优于 20 dB）。滤波器的实验结果与电磁模拟结果十分吻合。

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

Microwave and Optical Technology Letters 工程技术-工程：电子与电气

CiteScore

3.40

自引率

20.00%

发文量

371

审稿时长

4.3 months

期刊介绍： Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication