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Electromagnetics Volume 33, 2013 - Issue 8
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Original Articles

A Low-Profile Broad-Beamwidth Circular Polarization Antenna: Modified Microstrip-Monopole Antenna

Chuan Wu Department of Microwave Engineering, School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
,
Yan Li Department of Microwave Engineering, School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
,
Feng Yang Department of Microwave Engineering, School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
&
Peng Yang Department of Microwave Engineering, School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
Pages 598-608 | Received 08 Mar 2013, Accepted 03 Jul 2013, Published online: 30 Oct 2013
 
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Abstract

A novel low-profile broad-beamwidth circular polarization antenna, named modified microstrip-monopole antenna is presented in this article. Four small circular patches are loaded at the top of the microstrip-monopole antenna. Applying this simple method, the thickness of the proposed antenna can be reduced to only 45.9% of the microstrip-monopole antenna. The low profile characteristics of microstrip antenna can be kept. The 3-dB beamwidth of the proposed antenna is 134° at the central frequency, which is 1.81 times of the classical microstrip antenna. Measured and simulated results are demonstrated, and good agreement is obtained.

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