A New Wideband Circularly Polarized Dielectric Resonator Antenna
Abstract
A wideband and compact circularly polarized (CP) C-shaped dielectric resonator antenna (DRA) is presented. The proposed C-shaped DR is excited by a simple stripe line connected to a coplanar waveguide (CPW) feeding line. The C-shaped DRA is circularly polarized with 19% axial ratio (AR) bandwidth. It is found that the CP bandwidth can be expanded by using a narrow short circuit strip. The final design achieves CP with 50% AR bandwidth. The proposed circularly polarized DRA (CPDRA) with good radiation characteristics offers an impedance bandwidth of 58% between 3.45 and 6.26 GHz for VSWR ≤ 2. The proposed DRA is fabricated and tested. Very good agreement between simulated and measured results is obtained.
Keywords
Dielectric Resonator Antenna (DRA), Circularly Polarized (CP), Axial Ratio (AR) bandwidth, Coplanar Waveguide (CPW)-fedPersistent identifier
http://hdl.handle.net/11012/36406Document type
Peer reviewedDocument version
Final PDFSource
Radioengineering. 2014, vol. 23, č. 1, s. 175-180. ISSN 1210-2512http://www.radioeng.cz/fulltexts/2014/14_01_0175_0180.pdf
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- 2014/1 [64]
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