An FSS‐employed UWB antenna system for high‐gain portable devices. Issue 5 (21st January 2019)

• Record Type: Journal Article
• Authors: Saleem, Rashid; Bilal, Muhammad; Shabbir, Tayyab; Shafique, Muhammad Farhan
• Is Part Of: Microwave and optical technology letters. Volume 61:Issue 5(2019:May)
• Page Start: 1404
• Page End: 1410
• Publication Date: 2019-01-21
• Subjects: finite element‐boundary integral (FE‐BI) -- frequency selective surfaces (FSSs) -- gain enhancement -- periodic structures -- ultra‐wideband (UWB) antennas; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.31713
• Languages: English
• ISSNs: 0895-2477

Abstract

Abstract: In this article, a high‐gain antenna for ultra‐wideband (UWB) communication is presented and experimentally validated. Gain enhancement is achieved by employing a frequency selective surface (FSS) screen as a superstrate. The proposed antenna‐FSS arrangement is less complex and realized on a low‐profile FR‐4 laminate. The antenna comprises a circular radiator that is enclosed in a triangular shaped arrangement of slots along with a narrow feed‐line. Lengths and widths of the different sections along with feed are optimized to achieve an ultra‐wide impedance bandwidth. The employed superstrate is an array of modified square shaped FSS (MS‐FSS). Full wave analysis validates its effectiveness in achieving at least 5 dBi gain enhancement of the UWB antenna while maintaining wideband impedance match. Moreover, the antenna behavior is also analyzed by varying periodicity and the distance between superstrate and the proposed slot antenna. This antenna‐FSS arrangement is a suitable candidate for high‐gain UWB portable devices.