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Compact QMSIW-based antenna with different resonant frequencies depending on loading of metalized vias

Published online by Cambridge University Press:  02 April 2019

Divya Chaturvedi ,
Arvind Kumar  and
S. Raghavan
Divya Chaturvedi*
Affiliation:
Department of Electronics & Communication Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu-620 015, India
Arvind Kumar
Affiliation:
Department of Electronics and Communication Engineering, Madanapalle Institute of Technology & Science, Andhra Pradesh 517325, India
S. Raghavan
Affiliation:
Department of Electronics & Communication Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu-620 015, India
*
Author for correspondence: Divya Chaturvedi, E-mail: divyanitt31@gmail.com
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Abstract

In this work, simple, low profile, compact quarter-mode substrate-integrated waveguide (QMSIW)-based antennas are proposed for Wireless Local Area Network (WLAN) at 5.2/5.5 GHz and Wireless Body Area Network (WBAN) at 5.8 GHz, respectively. By implementing QMSIW technique, the electrical size of the antenna is reduced up to 1/4th of the conventional circular SIW cavities. Thanks to the quarter mode concept, the antenna size is reduced significantly by preserving its dominant mode. The resonant frequency of the dominant mode TM010 is independently tuned at 5.2, 5.5, and 5.8 GHz after loading the QMSIW cavity with metalized via holes, subsequently. The on-body performance of the antenna is verified on pork tissues at 5.8 GHz and it is found to be insensitive with respect to surroundings. The measured gain and simulated efficiency of the proposed antenna at 5.8 GHz in free space are 4.8 dBi and 92%, while in the proximity of pork tissues values are 3.25 dBi and 57%, respectively. Moreover, the measurement results demonstrate a good matching with the simulation results.

Keywords

Metalized via holesphantomquarter-mode substrate-integrated waveguide (QMSIW)specific absorption rateWLANWBAN
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 4 , May 2019 , pp. 420 - 427
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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