Quasi-elliptic bandpass filter based on novel coupling scheme with wide stop-band suppression

IF 1.9 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Microelectronics Journal Pub Date : 2025-10-10 DOI:10.1016/j.mejo.2025.106922

Ke Gong , Hang Qian , Xuehui Hu , Chunfeng Fan , Qing Liu

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引用次数: 0

Abstract

A novel design method for wide-stopband quasi-elliptic bandpass filters (BPF) is proposed, which is realized by combining a stepped impedance resonator (SIR) and a phase coupling scheme. Using two folded SIRs in conjunction with a feed structure, the phase coupling scheme of electrical coupling paths with different electrical lengths is realized, and a two-pole quasi-elliptic BPF is realized. Then, two mixed coupling schemes of the classical trisection and phase coupling schemes are proposed, and two different types of wide-stopband quasi-elliptical BPFs are realized. The finite frequency transmission zeros (FTZs) and bandwidth (BW) of the proposed BPF can be effectively controlled by adjusting the structural parameters. For demonstration, two filters are designed, fabricated, and measured. The measured result is consistent with the simulated result, thereby validating the feasibility and universality of the proposed method. The proposed filter has the advantages of compact size, wide-stopband, and high selectivity.

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基于新型宽阻带抑制耦合方案的准椭圆带通滤波器

提出了一种新的宽阻带准椭圆带通滤波器（BPF）设计方法，将阶跃阻抗谐振器（SIR）与相位耦合方案相结合实现。采用两个折叠SIRs结合进给结构，实现了不同电长度电耦合路径的相位耦合方案，实现了两极准椭圆BPF。在此基础上，提出了经典的三切分耦合和相位耦合两种混合耦合方案，实现了两种不同类型的宽阻带准椭圆bpf。通过调整结构参数，可以有效地控制BPF的有限频率传输零点和带宽。为了演示，设计、制作和测量了两个滤波器。实测结果与仿真结果吻合较好，验证了所提方法的可行性和通用性。该滤波器具有体积小、宽阻带和高选择性等优点。

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来源期刊

Microelectronics Journal 工程技术-工程：电子与电气

CiteScore

4.00

自引率

27.30%

发文量

222

审稿时长

43 days

期刊介绍： Published since 1969, the Microelectronics Journal is an international forum for the dissemination of research and applications of microelectronic systems, circuits, and emerging technologies. Papers published in the Microelectronics Journal have undergone peer review to ensure originality, relevance, and timeliness. The journal thus provides a worldwide, regular, and comprehensive update on microelectronic circuits and systems. The Microelectronics Journal invites papers describing significant research and applications in all of the areas listed below. Comprehensive review/survey papers covering recent developments will also be considered. The Microelectronics Journal covers circuits and systems. This topic includes but is not limited to: Analog, digital, mixed, and RF circuits and related design methodologies; Logic, architectural, and system level synthesis; Testing, design for testability, built-in self-test; Area, power, and thermal analysis and design; Mixed-domain simulation and design; Embedded systems; Non-von Neumann computing and related technologies and circuits; Design and test of high complexity systems integration; SoC, NoC, SIP, and NIP design and test; 3-D integration design and analysis; Emerging device technologies and circuits, such as FinFETs, SETs, spintronics, SFQ, MTJ, etc. Application aspects such as signal and image processing including circuits for cryptography, sensors, and actuators including sensor networks, reliability and quality issues, and economic models are also welcome.