Detailed Information

Cited 1 time in webofscience Cited 1 time in scopus
Metadata Downloads

Switchable Bandpass/Bandstop Filter Using Liquid Metal Alloy as Fluidic Switchopen access

Authors
Park, E.Y.Lee, M.J.Lim, Sungjoon
Issue Date
Mar-2019
Publisher
NLM (Medline)
Keywords
bandpass filter (BPF); bandstop filter (BSF); liquid metal; micro-pump; switchable
Citation
Sensors (Basel, Switzerland), v.19, no.5
Journal Title
Sensors (Basel, Switzerland)
Volume
19
Number
5
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/18517
DOI
10.3390/s19051081
ISSN
1424-8220
1424-3210
Abstract
In this paper, we propose a switchable band-pass/band-stop filter using liquid metal alloy as a fluidic switch. The filter is designed based on the Chebyshev response and implemented using a three-stage quarter-wavelength resonant structure. The fluidic switch is realized by injecting eutectic gallium⁻indium (EGaIn) in the microfluidic stubs, engraved in the polydimethylsiloxane (PDMS) material. When the fluidic switch selects the short stub using a micro-pump and microprocessor for switching, the filter acts as a bandpass filter (BPF) with the short stubs. When the fluidic switch selects the open stub, the filter acts as the bandstop filter (BSF) with the open stubs. At the BPF mode, the center frequency is 2.5 GHz and the 1-dB bandwidth is 1.75⁻3.07 GHz. The insertion loss is 0.5-dB ± 0.4-dB. At the BSF mode, the 15-dB bandstop bandwidth is 2.4⁻2.65 GHz with 2.5 GHz center frequency.
Files in This Item
Appears in
Collections
College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Lim, Sung Joon photo

Lim, Sung Joon
창의ICT공과대학 (전자전기공학부)
Read more

Altmetrics

Total Views & Downloads

BROWSE