Design of Single-Cavity Dual-Band Filter Based on Stepped Impedance Resonators

被引：2

作者：

Chen, Lu ^{[1
]}

Ding, Dawei ^{[2
]}

Zhang, Xiu Yin ^{[3
]}

机构：

[1] Anhui Univ, Sch Elect & Informat Engn, Hefei 230601, Peoples R China

[2] Anhui Univ, Sch Elect & Informat Engn & Informat Mat, Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China

[3] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510641, Peoples R China

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2024年 / 71卷 / 02期

关键词：

Resonator filters; Band-pass filters; Microwave filters; Filtering theory; Resonators; Loss measurement; Information filters; Bandpass filter; cavity filter; dual-band filter; stepped impedance resonator;

D O I：

10.1109/TCSII.2023.3311803

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This brief presents a single-cavity dual-band filter based on stepped impedance resonators (SIRs). This filter consists of a dielectric cylinder, four SIRs and an inductive cross-coupling structure (ICCS) placed inside a rectangular metal cavity. Through eigenmode analysis, the proposed filter could generate four resonant modes in two working bands. The ICCS is employed to obtain transmission zeros. After optimization, a compact single-cavity dual-band filter with low insertion loss, high selectivity, wide working bandwidth and wide out-of-band suppression is designed at 2470-2700 MHz and 3340-3750 MHz. Measured results show that the proposed filter could provide a promising candidate for both LTE (Long Term Evolution) and 5G (the Fifth Generation) mobile communication systems.

引用

页码：587 / 591

页数：5

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