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Omnidirectional circularly polarized slot antenna fed by a cylindrical waveguide in millimeter band

✍ Scribed by José Luis Masa-Campos; J. M. Fernández; M. Sierra-Pérez; José Luis Fernández-Jambrina

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
598 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A circularly polarized slotted array antenna is presented. The array is fed by a circular waveguide propagating the TM~01~, to properly generate the required polarization. An omnidirectional azimuth radiation pattern is obtained, as well as a −10°/+30° elevation antenna coverage. Low losses are achieved because of the waveguide feed. The slot array is mechanized over the metallic wall of the circular waveguide. Furthermore, the antenna presents a solid and rigid mechanical structure, which guarantees an optimum and repetitive response in a manufacturing process. A prototype antenna has been designed and measured. Satisfactory results have been obtained. The slotted array takes part from a signal detection system centered in 36.85 GHz. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 638–642, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22207

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