Compact dual-mode DGS resonators and its application to wide stopband bandpass filters

Author

Guan, Bo-Ran ; Wang, Lei

Author_Institution

Inst. of Antenna & Microwave, Hangzhou Dianzi Univ., Hangzhou, China

fYear

2011

fDate

1-3 Nov. 2011

Firstpage

789

Lastpage

792

Abstract

A novel compact dual-mode defected ground structure (DGS) resonator is presented. Full-wave simulation was used to investigate the distinct characteristics of this type of resonator. The results show that it has two operating modes which don´t coupled with each other and it is convenient to control the resonant frequency of two modes. Also, an inherent transmission zero could be controlled to locate at the high or low side of the two modes. A bandpass filter, using this type of resonator, has a bandwidth of 5.7% at 2.26 GHz is simulated and fabricated. The results show that this filter not only has an inherent transmission zero near the passband, but also has a very wide upper stopband with rejection better than 20 dB up to about 10 GHz.

Keywords

UHF resonators; band-pass filters; frequency control; compact dual-mode defected ground structure resonator; frequency 2.26 GHz; full-wave simulation; resonant frequency control; wide stopband bandpass filters; Band pass filters; Filtering theory; Microstrip filters; Microwave filters; Resonant frequency; Resonator filters; Superconducting filters; DGS; bandpass filter; dual-mode;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave, Antenna, Propagation, and EMC Technologies for Wireless Communications (MAPE), 2011 IEEE 4th International Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4244-8265-8

Type

conf

DOI

10.1109/MAPE.2011.6156210

Filename

6156210