A Compact Wideband Circularly Polarized Planar Monopole Antenna With Axial Ratio Bandwidth Entirely Encompassing the Antenna Bandwidth

Falih M. Alnahwi; Yasir I.A. Al-Yasir; Nazar T. Ali; Ibrahim Gharbia; Chan Hwang See; Raed A. Abd-Alhameed

doi:10.1109/ACCESS.2022.3196610

A Compact Wideband Circularly Polarized Planar Monopole Antenna With Axial Ratio Bandwidth Entirely Encompassing the Antenna Bandwidth

Falih M. Alnahwi
, Yasir I.A. Al-Yasir
, Nazar T. Ali
, Ibrahim Gharbia
, Chan Hwang See
, Raed A. Abd-Alhameed

Electrical Engineering

Basra University College of Science and Technology
University of Bradford
Napier University

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

15 Scopus citations

Abstract

The antenna presented in this study is a compact wideband monopole with wideband circular polarization that can be used across the whole antenna bandwidth. A rectangular C-shaped patch is partially covered by a ground plane in the proposed planar monopole antenna. Inserting a rectangular stub to the ground plane, etching a slit at the antenna patch, and adding a semicircular stub at the top of the antenna feed line increase the antenna impedance bandwidth (BW) and axial ratio bandwidth (ARBW). An FR4 substrate with overall dimensions of 25 mm ×25 mm ×1.6 mm is used to create the antenna. The antenna's observed impedance BW is 70% (4.55 GHz in the 4.3-8.85 GHz band), while the measured broadside ARBW is improved to a value of 82.2 percent (5.3 GHz along the range 3.8-9.1 GHz). The impedance BW is perfectly covered by the ARBW; hence the antenna can be considered circularly polarized throughout its operational spectrum. Within the antenna BW, the measured gain is greater than 1.5 dB.

Original language	British English
Pages (from-to)	81828-81835
Number of pages	8
Journal	IEEE Access
Volume	10
DOIs	https://doi.org/10.1109/ACCESS.2022.3196610
State	Published - 2022

Keywords

Axial ratio
circular polarization
planar antenna
wideband

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10.1109/ACCESS.2022.3196610

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title = "A Compact Wideband Circularly Polarized Planar Monopole Antenna With Axial Ratio Bandwidth Entirely Encompassing the Antenna Bandwidth",

abstract = "The antenna presented in this study is a compact wideband monopole with wideband circular polarization that can be used across the whole antenna bandwidth. A rectangular C-shaped patch is partially covered by a ground plane in the proposed planar monopole antenna. Inserting a rectangular stub to the ground plane, etching a slit at the antenna patch, and adding a semicircular stub at the top of the antenna feed line increase the antenna impedance bandwidth (BW) and axial ratio bandwidth (ARBW). An FR4 substrate with overall dimensions of 25 mm ×25 mm ×1.6 mm is used to create the antenna. The antenna's observed impedance BW is 70\% (4.55 GHz in the 4.3-8.85 GHz band), while the measured broadside ARBW is improved to a value of 82.2 percent (5.3 GHz along the range 3.8-9.1 GHz). The impedance BW is perfectly covered by the ARBW; hence the antenna can be considered circularly polarized throughout its operational spectrum. Within the antenna BW, the measured gain is greater than 1.5 dB.",

keywords = "Axial ratio, circular polarization, planar antenna, wideband",

author = "Alnahwi, \{Falih M.\} and Al-Yasir, \{Yasir I.A.\} and Ali, \{Nazar T.\} and Ibrahim Gharbia and See, \{Chan Hwang\} and Abd-Alhameed, \{Raed A.\}",

note = "Funding Information: This work was supported in part by the U.K. Engineering and Physical Sciences Research Council (EPSRC) under Grant EP/E022936/1, and in part by the European Union's Horizon 2020 Research and Innovation Program under Grant H2020-MSCA-ITN-2016 SECRET-722424. Publisher Copyright: {\textcopyright} 2013 IEEE.",

year = "2022",

doi = "10.1109/ACCESS.2022.3196610",

language = "British English",

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pages = "81828--81835",

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AU - Alnahwi, Falih M.

AU - Al-Yasir, Yasir I.A.

AU - Ali, Nazar T.

AU - Gharbia, Ibrahim

AU - See, Chan Hwang

AU - Abd-Alhameed, Raed A.

N1 - Funding Information: This work was supported in part by the U.K. Engineering and Physical Sciences Research Council (EPSRC) under Grant EP/E022936/1, and in part by the European Union's Horizon 2020 Research and Innovation Program under Grant H2020-MSCA-ITN-2016 SECRET-722424. Publisher Copyright: © 2013 IEEE.

PY - 2022

Y1 - 2022

N2 - The antenna presented in this study is a compact wideband monopole with wideband circular polarization that can be used across the whole antenna bandwidth. A rectangular C-shaped patch is partially covered by a ground plane in the proposed planar monopole antenna. Inserting a rectangular stub to the ground plane, etching a slit at the antenna patch, and adding a semicircular stub at the top of the antenna feed line increase the antenna impedance bandwidth (BW) and axial ratio bandwidth (ARBW). An FR4 substrate with overall dimensions of 25 mm ×25 mm ×1.6 mm is used to create the antenna. The antenna's observed impedance BW is 70% (4.55 GHz in the 4.3-8.85 GHz band), while the measured broadside ARBW is improved to a value of 82.2 percent (5.3 GHz along the range 3.8-9.1 GHz). The impedance BW is perfectly covered by the ARBW; hence the antenna can be considered circularly polarized throughout its operational spectrum. Within the antenna BW, the measured gain is greater than 1.5 dB.

AB - The antenna presented in this study is a compact wideband monopole with wideband circular polarization that can be used across the whole antenna bandwidth. A rectangular C-shaped patch is partially covered by a ground plane in the proposed planar monopole antenna. Inserting a rectangular stub to the ground plane, etching a slit at the antenna patch, and adding a semicircular stub at the top of the antenna feed line increase the antenna impedance bandwidth (BW) and axial ratio bandwidth (ARBW). An FR4 substrate with overall dimensions of 25 mm ×25 mm ×1.6 mm is used to create the antenna. The antenna's observed impedance BW is 70% (4.55 GHz in the 4.3-8.85 GHz band), while the measured broadside ARBW is improved to a value of 82.2 percent (5.3 GHz along the range 3.8-9.1 GHz). The impedance BW is perfectly covered by the ARBW; hence the antenna can be considered circularly polarized throughout its operational spectrum. Within the antenna BW, the measured gain is greater than 1.5 dB.

KW - Axial ratio

KW - circular polarization

KW - planar antenna

KW - wideband

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M3 - Article

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JO - IEEE Access

JF - IEEE Access

ER -

A Compact Wideband Circularly Polarized Planar Monopole Antenna With Axial Ratio Bandwidth Entirely Encompassing the Antenna Bandwidth

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