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Resonator Based Switching Technique between Ultra Wide Band (UWB) and Single/Dual Continuously Tunable-Notch Behaviors in UWB Radar for Wireless Vital Signs Monitoring

1
Department of Electrical Engineering, Polytechnique Montreal, Montreal, QC H3T 1J4, Canada
2
Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada
3
Health Technology Incubator, Jahrom University of Medical Sciences, 74148-46199 Jahrom, Iran
4
Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, P.O. Box 2713 Doha, Qatar
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(10), 3330; https://doi.org/10.3390/s18103330
Received: 13 September 2018 / Revised: 28 September 2018 / Accepted: 30 September 2018 / Published: 4 October 2018
(This article belongs to the Special Issue Antenna Technologies for Microwave Sensors)
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Abstract

This paper presents a novel resonator that can switch and create three important behaviors within the same antenna using miniaturized capacitors. The resonator was integrated into conventional Ultra-Wide Band (UWB) antenna to achieve UWB and Single/Dual continuously tunable-notch behaviors. The Single/Dual notched was continuously tuned to our desired frequency band by changing the value of the capacitors. The antenna designed and fabricated to validate these behaviors had a compact size of 24 × 30.5 mm2, including the ground plane. The radiation patterns were very clean due to the placement of the proposed resonator in the special ground plane. Moreover, the presented novel resonator and switching technique was compared with the recently proposed resonators and their switching techniques. The prototype for the antenna was also developed in order to validate its performance in wireless vital signs monitoring. The presented miniaturized resonator based antenna was utilized for tumor sensing and simulations were provided in this regard. Moreover, the deployment of the proposed resonator based UWB antenna sensor in Pipeline Integrity Monitoring system was also investigated and discussed. View Full-Text
Keywords: UWB behavior; switching of notched bands; miniaturized resonators; continuously tunable-band-notch behavior; tumor sensing UWB behavior; switching of notched bands; miniaturized resonators; continuously tunable-band-notch behavior; tumor sensing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Rahman, M.; NaghshvarianJahromi, M.; Mirjavadi, S.S.; Hamouda, A.M. Resonator Based Switching Technique between Ultra Wide Band (UWB) and Single/Dual Continuously Tunable-Notch Behaviors in UWB Radar for Wireless Vital Signs Monitoring. Sensors 2018, 18, 3330.

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