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Novel dual-band antenna with simultaneous linear and circular polarizations

Kanwal, Faiza, Sultan, Hamail, Maqsood, Moazam, ul Islam, Qamar, Gao, Steven (2014) Novel dual-band antenna with simultaneous linear and circular polarizations. In: Antennas and Propagation Conference (LAPC), 2014 Loughborough. . pp. 509-511. (doi:10.1109/LAPC.2014.6996436) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:46447)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1109/LAPC.2014.6996436

Abstract

A multi-function microstrip antenna for simultaneous operation at two different frequency bands (centered at 1.575 GHz and 2.4 GHz) is presented. In contrast to the traditional dual-band antennas, the presented antenna design is unique as it can achieve two different polarizations simultaneously. Such a configuration makes the proposed antenna suitable for receiving signals from entirely different systems using a single antenna. In order to achieve the dual-band operation, a stacked configuration of microstrip antennas has been used where the top patch is designed to operate at 2.4 GHz with linear (vertical) polarization while the bottom patch is designed to operate at 1.575 GHz with right hand circular polarization. Although the proposed antenna is a typical dual-band stacked configuration, it is the antenna feed that makes it a novel design. The antenna feed consists of a broadband branch-line coupler but its connection to the antenna is non-symmetric thereby forcing the two different patches to produce different polarizations. Antenna simulation results show that the dual-band antenna achieves greater than 5 dBi gain at both frequency bands whereas the axial ratio remains less than 3 dB at the GNSS band (1.575 GHz). The axial ratio at the ISM band (2.4 GHz) is shown to be greater than 35 dB demonstrating a linearly polarized operation. The antenna has a compact size and low cost, suitable for portable terminal antennas receiving signals at both GNSS and ISM frequency bands.

Item Type: Conference or workshop item (Paper)
DOI/Identification number: 10.1109/LAPC.2014.6996436
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Tina Thompson
Date Deposited: 05 Jan 2015 12:52 UTC
Last Modified: 06 May 2020 03:11 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46447 (The current URI for this page, for reference purposes)
Gao, Steven: https://orcid.org/0000-0002-7402-9223
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