Highly selective microstrip bandpass filters using dual-mode patch resonator loaded with short via

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

Aeu-International Journal of Electronics and Communications Pub Date : 2024-07-26 DOI:10.1016/j.aeue.2024.155457

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Abstract

In this paper, highly selective dual-mode microstrip bandpass filters (BPFs) are presented utilizing novel square patch resonator loaded with short via and periodic metallic vias array. Characteristics of the patch resonator are studied, and a new nondegenerate dual-mode patch resonator operating with the second and third higher-order modes is proposed. A two-pole BPF based on one dual-mode patch cavity is analyzed, and two transmission zeros (TZs) are produced. To realize higher-order filtering responses, four-pole BPFs with two cascaded dual-mode patch resonators are proposed, and different cascaded methods of two dual-mode patch resonators by a λ_g/4 microstrip connecting line (MCL) are analyzed and compared to maintain high selectivity and small size. For the demonstration, two four-pole filters with the center frequency at 3.3 GHz and five transmission zeros is designed, fabricated and measured.

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使用装有短通孔的双模贴片谐振器的高选择性微带带通滤波器

本文利用装有短通孔和周期性金属通孔阵列的新型方形贴片谐振器，提出了高选择性双模微带带通滤波器（BPF）。对贴片谐振器的特性进行了研究，并提出了一种利用二阶和三阶高阶模式工作的新型非退化双模贴片谐振器。分析了基于一个双模贴片腔的双极 BPF，并产生了两个传输零点（TZ）。为了实现高阶滤波响应，提出了具有两个级联双模贴片谐振器的四极 BPF，并分析和比较了两个双模贴片谐振器通过 λg/4 微带连接线（MCL）的不同级联方法，以保持高选择性和小尺寸。为了进行演示，设计、制造和测量了两个中心频率为 3.3 GHz、有五个传输零点的四极滤波器。

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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.