A cavity‐backed spiral slot antenna with wide axial ratio beamwidth for GPS system | Zendy

Bao Xiulong L. | Zendy; Ammann M. J. | Zendy

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A cavity‐backed spiral slot antenna with wide axial ratio beamwidth for GPS system

Author(s) -

Bao Xiulong L.,

Ammann M. J.

Publication year - 2014

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.28255

Subject(s) - beamwidth , axial ratio , spiral (railway) , fan beam antenna , spiral antenna , optics , global positioning system , microwave , reflector (photography) , microstrip , antenna (radio) , slot antenna , physics , materials science , electrical engineering , microstrip antenna , engineering , coaxial antenna , telecommunications , circular polarization , mechanical engineering , light source

A monofilar spiral slot antenna with a cavity‐backed reflector is presented, which can achieve the performance of the wide axial ratio beamwave for global positioning system (GPS) system. It comprises an arrangement of a single printed spiral slots fed by a 50‐Ω microstrip line. By using cavity‐backed covering the slot structure, a wide axial ratio beamwidth performance is achieved in the GPS L1 frequency. The angle with less than 3‐dB axial ratio at 1.575 GHz in the YoZ plane is about 215°. The measured results show that the HPBW beamwidths at 1.575 GHz are 100° in the YoZ plane, respectively. The peak gain is 5.5 dBic. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1050–1054, 2014

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