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A miniaturized design of Vicsek snowflake-box fractal microstrip patch antenna using defective ground structure for wireless applications

Published online by Cambridge University Press:  03 February 2022

Bharamappa Kattimani Open the ORCID record for Bharamappa Kattimani [Opens in a new window]  and
Rajendra R Patil
Bharamappa Kattimani*
Affiliation:
Department of Electronics and Communication Engineering, VSM's SRKIT, Nipani, Karnataka, India
Rajendra R Patil
Affiliation:
Department of Electronics and Communication Engineering, GSSSIETW, Mysuru, Karnataka, India
*
Author for correspondence: Bharamappa Kattimani, E-mail: navyabk2012@gmail.com
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Abstract

In this paper, miniaturization of fractal geometry with defected ground structure (DGC) concept has been experimentally verified at S-band (2–4) GHz. The design starts with a self-symmetry structure using conventional Vicsek snowflake-box fractal antenna. The same has been used in third iteration to achieve miniaturization. This proposed microstrip patch antenna (MPA) is resonating at 2.12 GHz with acceptable gain and broadside radiation. The miniaturization of about 87.26% when compared to conventional fractal MPA is achieved. The fractal unit cell is optimized for miniaturization and bandwidth by carrying out parametric study and applying the DGS shapes like rectangular and U-shaped slot etched in the ground plane of Vicsek snowflake-box fractal microstrip antenna. A fractal microstrip antenna is designed for wireless applications at 3.95 GHz. The fractal microstrip antenna is simulated using HFSS-V15 simulator. It is observed that the maximum size reduction of 87.26% is achieved in the third iteration of the Vicsek snowflake-box fractal radiating patch. The proposed fractal patch antenna is designed and fabricated using epoxy substrate of FR-4 with dielectric constant of 4.4 and thickness of 1.6 mm. The simulated results are compared with the measured results.

Keywords

Bandwidthdefected ground structurefractal microstrip patch antennareturn losssize reductionsnowflake-box fractal
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Special Issue 1: EuCAP 2021 Special Issue , February 2023 , pp. 112 - 119
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Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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