Title :
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
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;
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
DOI :
10.1109/MAPE.2011.6156210
