An Electronically Reconfigurable Patch Antenna Design for Polarization Diversity with Fixed Resonant Frequency
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Date
2015-04
Authors
Osman, Mohamed Nasrun
Rahim, Mohamad Kamal A.
Gardner, Peter
Hamid, Mohamad Rijal
Yusoff, Mohd Fairus Mohd
Majid, Huda A.
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
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Abstract
In this paper, an electronically polarization reconfigurable circular patch antenna with fixed resonant frequency operating at Wireless Local Area Network (WLAN) frequency band (2.4-2.48 GHz) is presented. The structure of the proposed design consists of a circular patch as a radiating element fed by coaxial probe, cooperated with four equal-length slits etched on the edge along x-axis and y-axis. A total of four switches was used and embedded across the slits at specific locations, thus controlled the length of the slits. By activating and deactivating the switches (ON and OFF) across the slits, the current on the patch is changed, thus modifying the electric field and polarization of the antenna. Consequently, the polarization excited by the proposed antenna can be switched into three types, either linear polarization, left-hand circular polarization or right-hand circular polarization. This paper proposes a simple approach that able to switch the polarizations and excited at the same operating frequency. Simulated and measured results of ideal case (using copper strip switches) and real case (using PIN diode switches) are compared and presented to demonstrate the performance of the antenna.
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Citation
Radioengineering. 2015 vol. 24, č. 1, s. 45-53. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2015/15_01_0045_0053.pdf
http://www.radioeng.cz/fulltexts/2015/15_01_0045_0053.pdf
Document type
Peer-reviewed
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Published version
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en