Gain enhancement of wideband circularly polarized UWB antenna using FSS

Shima Adibi; M. Amin Honarvar; Ali Lalbakhsh

doi:10.1029/2020RS007098

Gain enhancement of wideband circularly polarized UWB antenna using FSS

Shima Adibi, M. Amin Honarvar^*, Ali Lalbakhsh

^*Corresponding author for this work

School of Engineering

Research output: Contribution to journal › Article › peer-review

62 Citations (Scopus)

Abstract

This paper presents a new ultra-wideband (UWB) antenna system with circular polarization (CP). The antenna is a coplanar waveguide (CPW) feed structure with a modified inverted L-shaped radiating patch. A single-layer non-uniform frequency selective surface (FSS) composed of rectangular conductive patches is designed and used with the CP antenna to improve the CP characteristics and the gain of the antenna. According to the measured results, the 10 dB return-loss bandwidth of the antenna with the FSS extends from 3.7 to 11.1 GHz. The 3-dB measured axial ratio (AR) bandwidth is 58.15%, covering 5 to 9.1 GHz, and the measured peak gain is 4–9.4 dBi, showing an increase of about 3 dBi compared to the antenna without the FSS.

Original language	English
Article number	e2020RS007098
Pages (from-to)	1-8
Number of pages	8
Journal	Radio Science
Volume	56
Issue number	1
DOIs	https://doi.org/10.1029/2020RS007098
Publication status	Published - Jan 2021

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abstract = "This paper presents a new ultra-wideband (UWB) antenna system with circular polarization (CP). The antenna is a coplanar waveguide (CPW) feed structure with a modified inverted L-shaped radiating patch. A single-layer non-uniform frequency selective surface (FSS) composed of rectangular conductive patches is designed and used with the CP antenna to improve the CP characteristics and the gain of the antenna. According to the measured results, the 10 dB return-loss bandwidth of the antenna with the FSS extends from 3.7 to 11.1 GHz. The 3-dB measured axial ratio (AR) bandwidth is 58.15%, covering 5 to 9.1 GHz, and the measured peak gain is 4–9.4 dBi, showing an increase of about 3 dBi compared to the antenna without the FSS.",

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N2 - This paper presents a new ultra-wideband (UWB) antenna system with circular polarization (CP). The antenna is a coplanar waveguide (CPW) feed structure with a modified inverted L-shaped radiating patch. A single-layer non-uniform frequency selective surface (FSS) composed of rectangular conductive patches is designed and used with the CP antenna to improve the CP characteristics and the gain of the antenna. According to the measured results, the 10 dB return-loss bandwidth of the antenna with the FSS extends from 3.7 to 11.1 GHz. The 3-dB measured axial ratio (AR) bandwidth is 58.15%, covering 5 to 9.1 GHz, and the measured peak gain is 4–9.4 dBi, showing an increase of about 3 dBi compared to the antenna without the FSS.

AB - This paper presents a new ultra-wideband (UWB) antenna system with circular polarization (CP). The antenna is a coplanar waveguide (CPW) feed structure with a modified inverted L-shaped radiating patch. A single-layer non-uniform frequency selective surface (FSS) composed of rectangular conductive patches is designed and used with the CP antenna to improve the CP characteristics and the gain of the antenna. According to the measured results, the 10 dB return-loss bandwidth of the antenna with the FSS extends from 3.7 to 11.1 GHz. The 3-dB measured axial ratio (AR) bandwidth is 58.15%, covering 5 to 9.1 GHz, and the measured peak gain is 4–9.4 dBi, showing an increase of about 3 dBi compared to the antenna without the FSS.

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Gain enhancement of wideband circularly polarized UWB antenna using FSS

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