A Wideband and High Gain Dual-Polarzied Antenna Design by a Frequency-Selective Surface for Wlan Application

Abstract

Abstract-A new dual-polarized antenna loading frequency-selective surface (FSS) is proposed for 5G wireless local networks (WLANs) application. The antenna consists of two orthogonal bow-tie dipoles and a ground plane. A new wideband FSS is designed comprising ring-slot connecting rectangular slots. The reflection coefficient of wideband FSS is less than 0.9 from 4-6.5 GHz. The phase of reflection coefficient is −163 • at 5.5 GHz. The novel cell analyzed by the equivalent circuit is given and simulated. The wideband FSS is employed as a superstrate layer for bandwidth enhancement and radiation gain improvement of the antenna. After loading wideband FSS, the measured bandwidth is 5.3-6.3 GHz (17.2%) with S 11 and S 22 both less than −10 dB, which cover various 5G WLAN bandwidths. The gain of the antenna is 12.1 dBi at 5.5 GHz. The bandwidth of antenna with FSS increases 40%, and gain improves 5.6 dBi. The simulated and measured results agree well.

Performance improvement of slotted elliptical patch antenna using FSS superstrate

“…Also the lateral antenna and unit dimensions in Refs. [21][22][23][24][25] are quite larger at their resonance frequency. In Ref.…”

“…There are various structures have been reported by many authors as a superstrate in the context of gain enhancement. [17][18][19][20][21][22][23][24][25][26] Among those, single layer ZIMs proposed in Refs. 17-21 have the ability to control the direction of radiation.…”

“…Various types of printed antennas with several FSS superstrate structures have been reported in the recent literature. [22][23][24][25][26] However, the structures proposed in Refs. 21-26 exhibits, band stop characteristics at their resonance frequency except in Ref.…”

Design of a Compact Bandstop Ulam Spiral Frequency Selective Surface

“…FSS have received special attention by several researchers over the years due to their widespread applications. The applications includes bandpass and bandstop spatial filters, absorbers, artificial electromagnetic bandgap materials, uses as superstrate of antenna or antenna array to enhance the directivity and gain [6][7][8]. One of the most important uses is the integration with antennas systems acting as radomes and subreflectors, the latter is applied to separate electromagnetic waves into different frequency bands.…”

A Compact and Stable Frequency Selective Surface for WLAN Applications

“…One of its main uses is the integration with antennas systems acting as radomes and subreflectors, the latter is applied to separate electromagnetic waves into different frequency bands. These applications also includes bandpass and bandstop spatial filters, absorbers, artificial electromagnetic bandgap materials, uses as superstrate of antenna or antenna array to enhance the directivity and gain [5], [6], [7]. Currently, FSS with polarization independent, angular stability, and multiband or wideband characteristics (transmission or reflection), has received special attention [8], [9], [10].…”