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

TítuloOmnidirectional circularly polarized slot antenna fed by a cylindrical waveguide in millimeter band
Tipo de publicaciónJournal Article
Year of Publication2007
AutoresMasa-Campos, J. L., J. M. Fernández, and M. Sierra-Pérez
JournalMicrowave and Optical Technology Letters
Volumen49
Pagination638-642
Date PublishedMar.
ISSN0895-2477
Palabras claveCircular polarization, conformal slotted waveguide array, transversal magnetic mode, waveguide to coaxial transition
ResumenA circularly polarized slotted array antenna is presented. The array is fed by a circular waveguide propagating the TM01, 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.
URLhttp://onlinelibrary.wiley.com/doi/10.1002/mop.22207/abstract
DOI10.1002/mop.22207