Triband Omnidirectional Circularly Polarized Dielectric Resonator Antenna with Top-Loaded Alford Loop
Joint Authors
Cheng, Chunxia
Zhang, Fushun
Zhang, Fan
Yao, Yali
Source
International Journal of Antennas and Propagation
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-09-01
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
A triband omnidirectional circularly polarized dielectric resonator antenna with a top-loaded modified Alford loop for GSM, WLAN, and WiMAX applications is proposed.
Fed by an axial probe, the DRA (dielectric resonator antenna) radiates like a vertically polarized electric monopole.
The top-loaded modified Alford loop provides an equivalent horizontally polarized magnetic dipole mode at triband.
Omnidirectional CP (circular polarized) fields can be obtained when the two orthogonally polarized fields are equal in amplitude with phase quadrature.
The antenna has been successfully simulated, fabricated, and measured.
The experimental and numerical results exhibit that the antenna can obtain usable CP bandwidths of 1.925–1.955 GHz, 2.36–2.48 GHz, and 3.502–3.53 GHz with return loss larger than 10 dB and axial ratio less than 3 dB.
In addition, over the three bands, the antenna obtains very good omnidirectional CP radiation patterns in the azimuth plane.
Moreover, an average CP gain in the azimuth plane of 1.2, 1.6, and −1.5 dBic for the lower, middle, and upper bands has been obtained.
American Psychological Association (APA)
Cheng, Chunxia& Zhang, Fushun& Yao, Yali& Zhang, Fan. 2014. Triband Omnidirectional Circularly Polarized Dielectric Resonator Antenna with Top-Loaded Alford Loop. International Journal of Antennas and Propagation،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1036218
Modern Language Association (MLA)
Cheng, Chunxia…[et al.]. Triband Omnidirectional Circularly Polarized Dielectric Resonator Antenna with Top-Loaded Alford Loop. International Journal of Antennas and Propagation No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1036218
American Medical Association (AMA)
Cheng, Chunxia& Zhang, Fushun& Yao, Yali& Zhang, Fan. Triband Omnidirectional Circularly Polarized Dielectric Resonator Antenna with Top-Loaded Alford Loop. International Journal of Antennas and Propagation. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1036218
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036218