Frequency Band Rejection Technique Based on the Operating Modes for a Wideband H-Shaped DRA

Authors

  • Feras Z. Abushakra Department of Electrical and Computer Engineering University of Alabama, Tuscaloosa, 35487, USA
  • Nathan Jeong Department of Electrical and Computer Engineering University of Alabama, Tuscaloosa, 35487, USA

Keywords:

Dielectric Resonator Antenna (DRA), H-shaped antenna, modes distribution, notch rejection

Abstract

In this paper, a new approach to create frequency band rejection is applied to a wideband Hshaped dielectric resonator antenna (DRA). In order to create a notch characteristic in the operating band of the TEy1δ1 and TEy2δ1 modes, and guided by their theoretical and simulated electric field distributions, a narrow conductive strip is incorporated around the mid-section of the H-shaped DRA. The orientation of the notching strip is determined based on the electric field distribution of the selected modes for the frequency rejection. Furthermore, the selected feeding method improves the radiation patterns for this DRA shape compared to its previous designs. The new design offers an operating frequency range that extends from 4.15 to 9.8 GHz, allowing 81% of fractional bandwidth. The first notch is created at 6.5 GHz, while the second one is at 8 GHz. Average radiation efficiency of 95% across the frequency of interest is achieved with overall dimensions of 40×30×11.4 mm³. The proposed design is simulated using Ansys HFSS and validated by measurement.

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Author Biographies

Feras Z. Abushakra, Department of Electrical and Computer Engineering University of Alabama, Tuscaloosa, 35487, USA

Feras Abushakra received his B.Sc. degree in Electrical Engineering majoring in Communications and Electronics from the Jordan University of Science and Technology (JUST), Irbid, Jordan. He obtained his M.Sc. degree in Wireless Communication Engineering from Yarmouk University, Jordan, in 2017. He is currently working towards his Ph.D. in Electrical Engineering at the University of Alabama (UA), Tuscaloosa. His researches focus on dielectric resonator antennas, patch antennas, arrays and radar systems.

Nathan Jeong, Department of Electrical and Computer Engineering University of Alabama, Tuscaloosa, 35487, USA

Nathan Jeong received his Ph.D. degree in Electrical and Computer Engineering from Purdue University, 2010. At 2018 he joined the University of Alabama as Assistant Professor. His current research interests include 5G millimeterwave antenna and system, adaptive RF front-ends and electromagnetics. He has total of 12 years of industrial experience at Samsung Electronics, BlackBerry and Qualcomm. In addition, he holds more than 60 international patent and patent applications in the areas of wireless communication circuit, microwave and millimeter wave system, V2X (Vehicle to Everything), antennas, wireless power transfer and bioelectronics.

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Published

2021-02-01

How to Cite

[1]
Feras Z. Abushakra and Nathan Jeong, “Frequency Band Rejection Technique Based on the Operating Modes for a Wideband H-Shaped DRA”, ACES Journal, vol. 36, no. 2, pp. 168–173, Feb. 2021.

Issue

2021: Vol 36 Iss 2

Section

Articles