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Omnidirectional circularly polarized slot antenna fed by a cylindrical waveguide in millimeter band
Author(s) -
MasaCampos José Luis,
Fernández J. M.,
SierraPérez M.,
FernándezJambrina José Luis
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22207
Subject(s) - turnstile antenna , omnidirectional antenna , circular polarization , optics , slotted waveguide , coaxial antenna , microwave , azimuth , beam waveguide antenna , antenna (radio) , slot antenna , millimeter , radiation pattern , axial ratio , waveguide , antenna array , physics , engineering , electrical engineering , telecommunications , microstrip
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