Meta-grounded bandpass filter with broad upper-stopband

被引：0

作者：

Xu, Mingming ^{[1
,2
]}

Qiao, Haidong ^{[3
]}

Yu, Weihua ^{[1
]}

He, Changshan ^{[1
,2
]}

机构：

[1] Beijing Inst Technol, Sch Informat & Elect, Beijing, Peoples R China

[2] China Aerosp Sci & Technol Corp, Inst Remote Sensing Satellite, Beijing 100094, Peoples R China

[3] China Aerosp Sci & Technol Corp, Beijing Res Inst Telemetry, Beijing 100094, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2021年 / 63卷 / 05期

基金：

中国国家自然科学基金;

关键词：

bandpass filter; broad upper-stopband; mushroom lattice;

D O I：

10.1002/mop.32781

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：

In this paper, a novel meta-grounded planar bandpass filter is presented, facilitating much broader upper stopband. The proposed filter is comprised of a strip layer on the top, a dielectric laminate in the middle and a meta-grounding layer on the bottom. The strip on the top consists of three cross-shaped resonators in cascade. Instead of perfect conducting ground, a meta-ground, composed by a group of metallic mushroom lattices with different characteristic dimensions, is proposed for broadening the upper stopband. In order to validate the proposed concept, we design and fabricate a prototype filter with a center frequency of 11.6 GHz, which exhibits an extremely broad upper stopband from 17.6 GHz to 72.2 GHz with a rejection level greater than 20 dB.

引用

页码：1440 / 1444

页数：5

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