Open Access

ARTICLE

A Frequency Selective Surface Loaded UWB Antenna for High Gain Applications

Wahaj Abbas Awan¹, Do Min Choi¹, Niamat Hussain¹, Issa Elfergani^2,3, Seong Gyoon Park⁴, Nam Kim^1,*

1 Department of Information and Communication Engineering, Chungbuk National University, Cheongju, 28644, Korea
2 Instituto de Telecomunicações Campus Universitário de Santiago, 3810-193, Aveiro Portugal
3 School of Engineering and Informatics, Bradford University, Bradford, BD7 1DP, U.K
4 Department of Information and Communication Engineering, Kongju National University, Kongju, Korea

* Corresponding Author: Nam Kim. Email:

Computers, Materials & Continua 2022, 73(3), 6169-6180. https://doi.org/10.32604/cmc.2022.026343

Received 22 December 2021; Accepted 22 February 2022; Issue published 28 July 2022

Abstract

This paper presents the design of wideband and high gain Frequency Selective Surface (FSS) loaded antenna for ultra-wideband (UWB) wireless applications requiring high-gain. The antenna consists of a monopole and an FSS reflector. Initially, a conventional rectangular monopole antenna is modified using slot and stub to achieve wide operational bandwidth and size reduction. This modified antenna shows 50% miniaturization compared to a primary rectangular monopole, having a wide impedance bandwidth of 3.6–11.8 GHz. Afterward, an FSS is constructed by the combination of circular and square ring structures. The FSS array consisting of 8 × 8-unit cells are integrated with the antenna as a reflector to enhance the performance of the proposed miniaturized UWB antenna. The loading of FSS results in an improvement of at least 4 dBi gain in the entire operational bandwidth. Moreover, the antenna's bandwidth is also increased at the lower frequency band due to the presence of the FSS. A prototype of the antenna is fabricated and tested to verify the simulation results. The simulation and measurement results show that the antenna offers a wideband –10 dB impedance bandwidth ranging from 2.55–13 GHz with a stable peak gain of 8.6 dBi and retains the radiation pattern stability.

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Keywords

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