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Dual-Ring Circularly Polarized Microstrip Patch Array Using Hybrid Feed

Min, C and Free, C E (2009) Dual-Ring Circularly Polarized Microstrip Patch Array Using Hybrid Feed IEEE Transactions on Antennas and Propagation, 57 (6).


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We describe the design of a new form of traveling-wave-fed, circularly polarized microstrip patch array at $X$ -band. The antenna employs a dual-ring array structure in which the radiating elements are fed by non-radiating slots with sequential phase excitations to generate circular polarization. The antenna incorporates two novel features: firstly, two concentric ring sub-arrays of linearly polarized elements are used to improve the axial ratio and, secondly, development of a new model for power distribution to ensure that all the elements radiate the same power, thus ensuring pattern symmetry and high-quality circular polarization. The proposed design was validated through practical measurements, which showed a well-matched antenna with good axial ratio and well-defined radiation patterns.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Authors :
Min, C
Free, C
Date : 1 January 2009
DOI : 10.1109/TAP.2009.2019984
Additional Information : Published in <i>Transactions on Antennas and Propagation,</i> Vol. 57, Iss. 6. Copyright 2009 IEEE. Click <a href=>here</a> to access the journal's website.
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:05
Last Modified : 16 Jan 2019 16:18

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