A Novel Bandpass Filter Using a Combination of Open-Loop Defected Ground Structure and Half-Wavelength Microstrip Resonators

被引：0

作者：

Vagner, Petr ^{[1
]}

Kasal, Miroslav ^{[2
]}

机构：

[1] Brno Univ Technol, Dept Radio Elect, Brno 61200, Czech Republic

[2] Brno Univ Technol, Fac Elect Engn & Commun, Dept Radio Engn, Brno 61200, Czech Republic

来源：

RADIOENGINEERING | 2010年 / 19卷 / 03期

关键词：

Defected ground structure; bandpass filter; DGS resonator; slot resonator; open-loop resonator; half-wavelength microstrip resonator; Chebyshev prototype filter;

D O I：

暂无

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 paper deals with a defected ground structure (DGS) open-loop resonator analysis and bandpass filter design, using coupled DGS and microstrip resonators. The combination of DGS and microstrip resonators allows using top and bottom sides of the microwave substrate, therefore the resonators can partially overlap and a desired coupling coefficient can be easily achieved. The open-loop DGS resonator properties are investigated, as well as coupling types between the resonators. Finally, two bandpass filters are designed and simulated. The sixth order filter is fabricated and the results are compared with measurement. The introduced structure represents an alternative to a conventional parallel-coupled half wavelength microstrip resonator bandpass filter.

引用

页码：392 / 396

页数：5