Performance analysis of SAW gas sensor based on ST-Cut quartz for breath analysis

Mohamad Razali, Nur Fatin and Md Ralib @ Md Raghib, Aliza 'Aini and Ab Rahim, Rosminazuin (2018) Performance analysis of SAW gas sensor based on ST-Cut quartz for breath analysis. In: 2018 IEEE International Conference on Semiconductor Electronics (ICSE), 15th-17th Aug. 2018, Pullman Kuala Lumpur City Centre Hotel and ResidenceKuala Lumpur.

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Abstract

Abstract- Breath analysis is the recent technique used to detect diseases. Among the advantages of breath analysis are high sensitivity and fast detection. Surface acoustic wave (SAW) gas sensor is one of the sensors that can be used to analyze breath analysis. This work reports on the design and simulation of SAW gas sensor using a FEM simulator, COMSOL Multiphysics. We analyze the possibilities of increasing the quality factor, coupling coefficient and the wave velocity of the devices by varying the number of interdigitated electrodes (IDTs). We designed and simulated IDTs pf different finger number (IDT= 2, 4, 8, 12, 16, 20, 24, 28 and 32). The measured quality factor, coupling coefficient and wave velocity confirms that varying the number of IDTs fingers enables to reach better electrical performances at resonances frequency around 943 MHz.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	7658/66998
Uncontrolled Keywords:	SAW gas sensor, number of IDT, COMSOL, Multiphysics
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices > TK7885 Computer engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Aliza Aini Md Ralib
Date Deposited:	26 Oct 2018 16:24
Last Modified:	02 Jan 2019 10:54
URI:	http://irep.iium.edu.my/id/eprint/66998

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