Compact inline substrate integrated waveguide filter with enhanced selectivity using new non-resonating node

被引：19

作者：

He, Zhaosheng ^{[1
]}

You, Chang Jiang ^{[1
]}

Leng, Supeng ^{[1
]}

Li, Xiang ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Commun & Informat Engn, Chengdu, Sichuan, Peoples R China

来源：

ELECTRONICS LETTERS | 2016年 / 52卷 / 21期

基金：

中国国家自然科学基金;

关键词：

substrate integrated waveguides; waveguide filters; resonator filters; prototype filter; SIW cavity; compact circuit size; TZ; transmission zero; signal transmission path; third-order SIW filter; coaxial line resonator; NRN; stepped-impedance nonresonating node; selectivity enhancement; compact inline substrate integrated waveguide filter;

D O I：

10.1049/el.2016.2712

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：

A high selective inline substrate integrated waveguide (SIW) filter based on novel stepped-impedance non-resonating node (NRN) is presented. The stepped-impedance NRN is realised by inserting a stepped-impedance substrate integrated coaxial line resonator into the volume of a third-order SIW filter. It introduces extra signal transmission path between source and load. Thus, one more transmission zero (TZ) is produced compared with conventional NRN that further improves the selectivity of the filter. Also, the proposed filter achieves a compact circuit size as the stepped-impedance NRN is embedded in the SIW cavity without occupying extra layout. To validate the proposed concept, a prototype filter with two TZs locating at both the lower and upper stop-bands, is designed, fabricated and measured. The measured results are well consistent with the simulation ones.

引用

页码：1778 / 1780

页数：2

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