Title :
A tunable low-pass filter using a liquid-metal reconfigurable periodic defected ground structure
Author :
Guo, Shuyan ; Lei, Bao Jun ; Hu, Wenqi ; Shiroma, Wayne A. ; Ohta, Aaron T.
Author_Institution :
Department of Electrical Engineering, University of Hawaii at Manoa, Honolulu, 96822 USA
Abstract :
A new type of tunable low-pass filter is demonstrated that uses liquid metal to reconfigure a defected ground structure (DGS). By filling in different DGS lattices with Galinstan liquid metal, the tunable low-pass filter provides tuning of up to eight cutoff frequencies. Measurements of four of the cutoff frequencies show a 62% tuning range while maintaining a stopband of more than 5 GHz.
Keywords :
Cutoff frequency; Finite element methods; Liquids; Low pass filters; Metals; Resonator filters; Tuning; Tunable low-pass filter; defected ground structure (DGS); liquid metals;
Conference_Titel :
Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Conference_Location :
Montreal, QC, Canada
Print_ISBN :
978-1-4673-1085-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2012.6259765
