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A miniaturized evanescent mode HMSIW humidity sensor

Published online by Cambridge University Press:  21 November 2017

Chang-Ming Chen*
Affiliation:
School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China. Phone: +86 028 85966249
Jun Xu
Affiliation:
School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China. Phone: +86 028 85966249
*
Corresponding author: C-M. Chen Email: [email protected]

Abstract

A passive evanescent mode half-mode substrate integrated waveguide (HMSIW) resonator loaded with a complementary split ring resonator (CSRR) is designed and fabricated for humidity sensing applications. The use of the CSRR which is etched on the top plane of the HMSIW can significantly reduce the size of the device. Without any sensing material, the sensor which has a compact size of 0.17λg × 0.17λg can provide high humidity sensitivity up to 5.82 MHz/%relative humidity (RH) at high RH region (>84.3%). The results indicate that the proposed structure is a promising candidate for radio and microwave humidity sensing applications.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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