Title :
A tunable x-band substrate integrated waveguide cavity filter using reconfigurable liquid-metal perturbing posts
Author :
Dang, Jonathan H. ; Gough, Ryan C. ; Morishita, Andy M. ; Ohta, Aaron T. ; Shiroma, Wayne A.
Author_Institution :
Dept. of Electr. Eng., Univ. of Hawaii at Manoa, Honolulu, HI, USA
Abstract :
A tunable bandpass filter based on reconfigurable liquid-metal perturbing posts in a substrate integrated waveguide (SIW) cavity is demonstrated. The design consists of four reconfigurable posts in a single cavity which provide five center frequencies from 10.13 GHz to 11.31 GHz. To enable frequency tuning, nontoxic liquid-metal Galinstan is hydraulically actuated to activate and deactivate posts. The five states have an average peak insertion loss of 1.35 dB with fractional bandwidths of 0.6% to 1% and unloaded quality factors of 96 to 154.
Keywords :
band-pass filters; cavity resonator filters; substrate integrated waveguides; frequency 10.13 GHz to 11.31 GHz; frequency tuning; loss 1.35 dB; nontoxic liquid-metal Galinstan; reconfigurable liquid-metal perturbing posts; tunable bandpass filter; tunable x-band substrate integrated waveguide cavity filter; Copper; Fabrication; Micromechanical devices; Polyimides; Substrates; Thickness measurement; Varactors; bandpass filter; frequency reconfigurable; liquid metal; substrate integrated waveguide (SIW);
Conference_Titel :
Microwave Symposium (IMS), 2015 IEEE MTT-S International
Conference_Location :
Phoenix, AZ
DOI :
10.1109/MWSYM.2015.7167060
