A Metamaterial Bandpass Filter with End-Fire Coaxial Coupling

被引：1

作者：

Tang, Xianfeng ^{[1
]}

Zang, Yemin ^{[1
]}

Li, Xiangqiang ^{[1
]}

Xu, Che ^{[1
]}

机构：

[1] Southwest Jiaotong Univ SWJTU, Sch Phys Sci & Technol, Chengdu 611756, Peoples R China

来源：

ELECTRONICS | 2024年 / 13卷 / 16期

基金：

中国国家自然科学基金;

关键词：

bandpass filter; metamaterial; coaxial; end-fire; WAVE; PROPAGATION; OSCILLATOR; DESIGN;

D O I：

10.3390/electronics13163158

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A miniaturized metamaterial (MTM) bandpass filter (BPF) based on end-fire coaxial coupling is proposed. End-fire coaxial coupling is achieved by using the coaxial cavity to connect with the SubMiniature version A connector. The subwavelength characteristics of the MTM lead to the miniaturization advantages of the filter in transverse dimensions. Moreover, the longitudinal length of the coaxial cavity can be sharply reduced by introducing matched blocks. As a result, the proposed filter has miniaturization merit both in transverse and longitudinal dimensions. The full-wave simulation results further reveal that the MTM BPF exhibits the advantages of low loss, low reflection, and low group delay. Additionally, the fractional bandwidth is approximately 13% when |S11| is less than -15 dB. The MTM BPF might have potential applications to array antennas for easily being expanded to two dimensional arrays.

引用

页数：11

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