A Reconfigurable Quarter-Mode Substrate Integrated Waveguide Cavity Filter Employing Liquid-Metal Capacitive Loading Conference Paper

abstract

• 2015 IEEE. A microfluidically-tunable substrate integrated cavity filter is presented for the first time. Quarter mode cylindrical substrate integrated waveguide (SIW) cavities are used to design an ultra-compact two-pole filter with a center frequency of 1.12 GHz. A corner via is connected to a surface ring gap in order to capacitively load each SIW cavity resonator. Frequency tuning of the filter is achieved using the capacitive loading effect of a liquid metal channel placed on top of the surface gap capacitors. The Polydimethylsiloxane (PDMS) structure including the micro-channel is bonded to the SIW circuit board using a unique fabrication technique. Measured results verify a tuning ratio of 1.72:1 and an insertion loss of 2.5 and 3.45 dB at 1.12 and 0.65 GHz, respectively.

name of conference

• 2015 IEEE MTT-S International Microwave Symposium

authors

• Entesari, Kamran
• Kameoka, Jun

published proceedings

• 2015 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS)

author list (cited authors)

• Saghati, A. P., Kordmahale, S. B., Kameoka, J., & Entesari, K.

citation count

• 13

complete list of authors

• Saghati, Alireza Pourghorban||Kordmahale, Sina Baghbani||Kameoka, Jun||Entesari, Kamran

publication date

• January 2015

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE MTT-S International Microwave Symposium digest. IEEE MTT-S International Microwave Symposium  Journal

keywords

• Filters
• Microfiuidics
• Reconfigurable Filter
• Resonators
• Substrate Integrated Waveguide (siw)
• Tunable Filter

Digital Object Identifier (DOI)

• 10.1109/mwsym.2015.7166885

International Standard Book Number (ISBN) 13

• 9781479982752

start page

• 1

end page

• 3

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Fmwsym.2015.7166885