A wideband, thin profile and enhanced gain microstrip patch antenna modified by novel mushroom-like EBG and periodic defected ground structures

Abstract

This paper presents a wideband, thin-profile and enhanced-gain microstrip patch antenna improved by using a novel mushroom-like Electromagnetic Band Gap (EBG) structure and forming periodic Defected Ground Structures (DGS) on the ground plane. The proposed antenna operates between 9.56 and 14 GHz and has 4.44 GHz–10 dB impedance bandwidth. With A4, the gain of the reference antenna is increased by 64.4%, while a 38% bandwidth is also achieved. The parametric analyses carried out on the metallic part area of the novel EBG patch indicated that when the area of the used EBG patches are approximately three quarters or less of the conventional ones, greater gain values for the designed antenna are obtained. This relation between the EBG patches and the antenna gain can be pointed out as the novelty of the study. The results were analysed by the simulations carried out with CST Microwave Studio and were verified by measurements from manufactured prototypes.

KEYWORDS:

• Wideband
• thin-profile
• gain enhancement
• microstrip antenna
• EBG
• DGS

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Cemile Tangel

Cemile Tangel received BSc degree from Gazi University, Dept. of Electrical and Electronics Eng. in 1991, and MSc degree from Kocaeli University Dept. of Electronics and Comimunication Eng. in 2009. She has currently been pursuing PhD degree in Electrical and Electronics Engineering, Graduate Education Institute, Sakarya University of Applied Sciences, Sakarya, Turkey. Her research areas include electromagnetic theory, antenna designs, microstrip antennas and EBG structures.

Nigar Berna Teşneli

Nigar Berna Teşneli received the B.S., M.S., and Ph.D. degrees in Physics Engineering from the Faculty of Engineering, University of Hacettepe, Ankara, Turkey, in 1998, 2000, and 2005, respectively. She worked at the Department of Physics Engineering, University of Hacettepe, Ankara, Turkey and with the Department of Electrical and Electronics Engineering, University of Sakarya, Sakarya, Turkey. She has been with the Nanomaterial Engineering Group, University of Sheffield, Sheffield, U.K., as visiting researcher in 2003. Since 2018, she has been working as an Assistant Professor with the Department of Engineering Fundamental Sciences, Sakarya University of Applied Sciences, Sakarya, Turkey. Her research interests include electromagnetic field theory, antenna design, metamaterials, electromagnetic bandgap structures, frequency selective surfaces, electromagnetic measurements and electromagnetic compatibility.