Broadband planar circularly polarised antenna for ultra-high frequency applications

Rezaeieh, Sasan Ahdi, Abbosh, Amin and Antoniades, Marco A. (2014) Broadband planar circularly polarised antenna for ultra-high frequency applications. IET Microwaves, Antennas and Propagation, 8 4: 263-271. doi:10.1049/iet-map.2013.0249

Author Rezaeieh, Sasan Ahdi
Abbosh, Amin
Antoniades, Marco A.
Title Broadband planar circularly polarised antenna for ultra-high frequency applications
Journal name IET Microwaves, Antennas and Propagation   Check publisher's open access policy
ISSN 1751-8725
Publication date 2014-01-01
Year available 2014
Sub-type Article (original research)
DOI 10.1049/iet-map.2013.0249
Open Access Status Not yet assessed
Volume 8
Issue 4
Start page 263
End page 271
Total pages 9
Place of publication Stevenage, Herts, United Kingdom
Publisher Institution of Engineering and Technology
Language eng
Subject 2208 Electrical and Electronic Engineering
Abstract A broadband circularly polarised (CP) antenna employing a deformed square loop radiator in combination with two spiraled monopoles is presented, for use in multiple ultra-high frequency applications. This combination of radiators provides a broad impedance matching bandwidth which is not accessible using any of these techniques alone. The antenna employs a uniplanar structure that is fed using a coplanar waveguide for simplicity of fabrication. A dual-resonance response is achieved by introducing two spiraled monopoles in combination with a square loop radiator. Subsequently, circular polarisation is achieved by introducing three conducting rectangles into the periphery of the square loop, forming a deformed loop radiator. The increase in the electrical length caused by the introduction of the three rectangles also improves the impedance matching of the antenna, providing a wide impedance bandwidth. The antenna exhibits a 45% (556-882MHz) -10dB impedance bandwidth, and a 21% (715-880MHz) 3dB axial ratio bandwidth. It has a compact size of 0.28λ × 0.28λ × 0.002λ at 582MHz, which is the lowest resonant frequency of the antenna. Throughout the operating bands, the gain and radiation efficiency vary from 3.6 to 6.4 dBi and 85 to 90%, respectively.
Keyword Engineering, Electrical & Electronic
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Information Technology and Electrical Engineering Publications
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