Compact Wide-Beam Circularly-Polarized Microstrip Antenna With a Parasitic Ring for CNSS Application

A compact single-feed circularly-polarized (CP) wide beam microstrip antenna is proposed for CNSS application. The antenna is designed with a double-layer structure, comprising a circular patch with two rectangular stubs along the diameter direction and a parasitic ring right above it. The resonance...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2014-05, Vol.62 (5), p.2847-2850
Main Authors: PAN, Ze-Kun, LIN, Wei-Xin, CHU, Qing-Xin
Format: Article
Language:English
Subjects:
Antenna gain
Antenna measurements
Antenna radiation patterns
Antennas
Applied sciences
Beams (radiation)
circular polarization
Circularity
Exact sciences and technology
gain control
Horizontal
micro strip antennas
Microstrip
Microstrip antennas
Noise levels
parasitic antennas
Patch antennas
Radiocommunications
Substrates
Telecommunications
Telecommunications and information theory
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Description
Summary:A compact single-feed circularly-polarized (CP) wide beam microstrip antenna is proposed for CNSS application. The antenna is designed with a double-layer structure, comprising a circular patch with two rectangular stubs along the diameter direction and a parasitic ring right above it. The resonance frequency and the CP characteristics are mainly controlled by the circular patch and the rectangular stubs, respectively. The vertical HPBW (half power beam width) could be widened by the parasitic ring. Experimental results show that the measured vertical HPBW is approximately 140° and the measured out-of-roundness for the horizontal radiation pattern is only 1.1 dB. Besides, it could maintain good low-profile characteristics.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2014.2307348