volume | PIER Journals

2017-07-03

A Novel Circularly Polarised Antenna with Wide Power and Axial-Ratio Beamwidth by Using Tilted Dipoles

Li Wang,

Dr. Li Wang

Xidian University

China

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Xi Chen,

Dr. Xi Chen

Xidian University

China

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Dan Wu,

Dr. Dan Wu

Xidian University

China

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Long Yang,

Dr. Long Yang

Science and Technology on Antenna and Microwave Laboratory

Xidian University

China

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Guang Fu,

Dr. Guang Fu

Xidian University

China

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Xiao-Wei Shi

Professor Xiao-Wei Shi

School of Electronics Engineering

Xidian University

China

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Progress In Electromagnetics Research Letters, Vol. 69, 37-43, 2017

doi:10.2528/PIERL17040701

Abstract

A novel circularly polarised antenna with wide 3 dB axial-ratio beamwidth (ARBW) and half power beamwidth (HPBW) is proposed in this letter. By using two pairs of tilted dipoles, the ARBW of the antenna is significantly enhanced to about 160° and 162° in the XZ- and YZ-planes, respectively. Meanwhile, its HPBW is also broadened to above 116° in the dual planes. A prototype is manufactured and measured to validate the method. The measured results show that |S₁₁|<-10 dB reaches about 38.8% (1.37 GHz-2.03 GHz), and the AR at broadside bandwidth is 14% (1.51 GHz-1.74 GHz). The gain of the antenna also keeps above 4.19 dBic. Meanwhile, acceptable agreements can be obtained between the simulated and measured results. As such, the proposed CP antenna with wide beamwidth can be used in various navigation systems.

Citation

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Li Wang, Xi Chen, Dan Wu, Long Yang, Guang Fu, and Xiao-Wei Shi, "A Novel Circularly Polarised Antenna with Wide Power and Axial-Ratio Beamwidth by Using Tilted Dipoles," Progress In Electromagnetics Research Letters, Vol. 69, 37-43, 2017.
doi:10.2528/PIERL17040701

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