Design of Low-Temperature Co-Fired Ceramic-Based Miniaturized Filter With High Rejection for Super High-Frequency Band Applications

IF 1.2 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Microwave and Optical Technology Letters Pub Date : 2025-09-05 DOI:10.1002/mop.70387

Zheyu Li, Weipeng Xuan, Rui Ding, Huaping Zhang, Hui Wang, Feng Gao, Hao Jin, Jikui Luo, Shurong Dong

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引用次数: 0

Abstract

A super high-frequency (SHF) bandpass filter was designed and fabricated using low-temperature co-fired ceramic (LTCC) technology. To achieve miniaturization while suppressing undesired coupling effects that can generate spurious resonances and parasitic responses, a multilayer configuration was implemented, in which capacitive and inductive elements were allocated to specific layers and regions. Through utilizing the parasitic interactions between components, the number of discrete elements was reduced. Transmission zeros were introduced to enhance out-of-band (OoB) suppression through tailored routing of interconnecting lines, and mutual inductive coupling between inductors. The design was optimized using full-wave three-dimensional electromagnetic simulations. The fabricated LTCC filter exhibits a passband of 3.0–3.4 GHz with an OoB rejection exceeding 50 dB. Measured results are in good agreement with simulations, confirming the suitability of the proposed approach for SHF-band applications.

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超高频应用低温共烧陶瓷小型化高阻滤波器的设计

采用低温共烧陶瓷（LTCC）技术设计并制作了超高频（SHF）带通滤波器。为了实现小型化，同时抑制可能产生杂散共振和寄生响应的不希望的耦合效应，实现了多层配置，其中电容和电感元件被分配到特定的层和区域。通过利用元件间的寄生相互作用，减少了离散元件的数量。通过对互连线的定制路由和电感之间的互感耦合，引入传输零点来增强带外（OoB）抑制。利用全波三维电磁仿真对设计进行了优化。所制备的LTCC滤波器具有3.0-3.4 GHz的通带，OoB抑制超过50 dB。测量结果与模拟结果吻合良好，证实了该方法在超高频波段应用中的适用性。

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