Compact Size and High Gain of CPW-fed UWB Strawberry Artistic shaped Printed Monopole Antennas using FSS Single Layer Reflector

Abstract

This study proposed the use of coplanar waveguide Ultrawide-band strawberry artistic shaped printed monopole (SAPM) antenna with a single-layer frequency selective surface (FSS) as the metallic plate to improve the gain of antenna application. The intersection of six cylinders is used to structure the strawberry artistic shaped radiating element, which leads to enhancing the antenna bandwidth. The proposed FSS reflectors used a 10 × 10 array with the unit cell of 6mm × 6mm in introducing a center-operating frequency. This study used the FR4 substrate with coplanar waveguide (CPW) fed to print the proposed antenna, which provided a wide impedance bandwidth of 8.85 GHz (3.05-11.9GHz) that covers the licensed Ultrawide-band. The proposed FSS transmitted a stop-band transmission coefficient, which is below −10 dB with the linear reflection phase over the bandwidth in the range from 3.05 GHz to 11.9 GHz. The UWB SAPM antenna with FSS reflector showed an improvement from 1.65 dB to 7.87 dB in the lower band and 6.3 dB to 9.68 dB in the upper band with an enhancement of 6.22 dB. The gain value is enhanced by the gaping between the antenna and FSS, which has an approximately constant gain response through the band, the gain is sustained among 7.87 dB to 9.68 dB. The total dimension of the antenna is 61mm×61mm×1.6 mm. The proposed antenna structure provides the directional and balanced far-field pattern, which is suitable for Ultrawide-band (UWB) applications and ground-penetrating radar (GPR) applications. INDEX TERMS UWB SAPM antenna, FSS reflector, gain, reflection phase, FSS array, stop-band.

AMC Integrated Multilayer Wearable Antenna for Multiband WBAN Applications

“…FSS could improve the performance of antenna in terms of gain and the directivity, it is thus preferred in wearable electronics as it could safeguard the human skin underneath. Frequency selective surface can use the ultra-wide stopband by way of reflectors for UWB antennas [4].…”

High Performance CPW Fed Printed Antenna With Double Layered Frequency Selective Surface Reflector for Bandwidth and Gain Improvement

“…Several reports on FSS based antenna to achieve broadband characteristics, high gain, and high directivity have been published [14][15][16][17][18]. In [14], a dual band monopole antenna using two FSS layers consisting of 5 × 6 elements corner reflectors placed at 90 • is reported.…”

An Ultra-Miniaturized MCPM Antenna for Ultra-Wideband Applications

“…Many techniques have been reported to overcome the bandwidth and size limitation, which include the use of notch filter slots as a split ring resonator (SRR) [3][4][5], electromagnetic bandgap (EBG) [6], coplanar waveguide (CPW) fed [7] and partial ground plane feeding technique [8]. Moreover, different patch shapes have also been presented in this literature to obtain UWB response, such as hexagonal shaped [9], bioinspired leaf shaped [10], strawberry artistic shaped [11], modified trident shaped [12], simple flower shaped [13], modified pentagon shaped [14], Mercedes radiating shaped [15] etc.…”

“…The proposed antenna exhibits an ultra-wideband response from 3 to 11 GHz. The antenna has a very compact size of 15×15×1.548 mm, which is the smallest compared to those proposed in the literature [3,4,9,[11][12][13][14][15]. A summary of the contribution to the body of knowledge in this paper is given below: 1.…”