A reconfigurable quarter-mode substrate integrated waveguide cavity filter employing liquid-metal capacitive loading

Alireza Pourghorban Saghati; Sina Baghbani Kordmahale; Jun Kameoka; Kamran Entesari

doi:10.1109/MWSYM.2015.7166885

A reconfigurable quarter-mode substrate integrated waveguide cavity filter employing liquid-metal capacitive loading

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

11 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	2015 IEEE MTT-S International Microwave Symposium, IMS 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479982752
DOIs	https://doi.org/10.1109/MWSYM.2015.7166885
Publication status	Published - 2015 Jul 24
Externally published	Yes
Event	IEEE MTT-S International Microwave Symposium, IMS 2015 - Phoenix, United States Duration: 2015 May 17 → 2015 May 22

Publication series

Name	2015 IEEE MTT-S International Microwave Symposium, IMS 2015

Other

Other	IEEE MTT-S International Microwave Symposium, IMS 2015
Country/Territory	United States
City	Phoenix
Period	15/5/17 → 15/5/22

Keywords

Filters
microfluidics
reconfigurable filter
resonators
substrate integrated waveguide (SIW)
tunable filter

ASJC Scopus subject areas

Computer Networks and Communications
Signal Processing
Electrical and Electronic Engineering

Access to Document

10.1109/MWSYM.2015.7166885

Cite this

Saghati, A. P., Kordmahale, S. B., Kameoka, J., & Entesari, K. (2015). A reconfigurable quarter-mode substrate integrated waveguide cavity filter employing liquid-metal capacitive loading. In 2015 IEEE MTT-S International Microwave Symposium, IMS 2015 Article 7166885 (2015 IEEE MTT-S International Microwave Symposium, IMS 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2015.7166885

A reconfigurable quarter-mode substrate integrated waveguide cavity filter employing liquid-metal capacitive loading. / Saghati, Alireza Pourghorban; Kordmahale, Sina Baghbani; Kameoka, Jun et al.
2015 IEEE MTT-S International Microwave Symposium, IMS 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7166885 (2015 IEEE MTT-S International Microwave Symposium, IMS 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Saghati, AP, Kordmahale, SB, Kameoka, J & Entesari, K 2015, A reconfigurable quarter-mode substrate integrated waveguide cavity filter employing liquid-metal capacitive loading. in 2015 IEEE MTT-S International Microwave Symposium, IMS 2015., 7166885, 2015 IEEE MTT-S International Microwave Symposium, IMS 2015, Institute of Electrical and Electronics Engineers Inc., IEEE MTT-S International Microwave Symposium, IMS 2015, Phoenix, United States, 15/5/17. https://doi.org/10.1109/MWSYM.2015.7166885

Saghati AP, Kordmahale SB, Kameoka J, Entesari K. A reconfigurable quarter-mode substrate integrated waveguide cavity filter employing liquid-metal capacitive loading. In 2015 IEEE MTT-S International Microwave Symposium, IMS 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7166885. (2015 IEEE MTT-S International Microwave Symposium, IMS 2015). doi: 10.1109/MWSYM.2015.7166885

Saghati, Alireza Pourghorban ; Kordmahale, Sina Baghbani ; Kameoka, Jun et al. / A reconfigurable quarter-mode substrate integrated waveguide cavity filter employing liquid-metal capacitive loading. 2015 IEEE MTT-S International Microwave Symposium, IMS 2015. Institute of Electrical and Electronics Engineers Inc., 2015. (2015 IEEE MTT-S International Microwave Symposium, IMS 2015).

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abstract = "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.",

keywords = "Filters, microfluidics, reconfigurable filter, resonators, substrate integrated waveguide (SIW), tunable filter",

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AU - Entesari, Kamran

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N2 - 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.

AB - 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.

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A reconfigurable quarter-mode substrate integrated waveguide cavity filter employing liquid-metal capacitive loading

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