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Circularly polarized slot antenna with three‐dimensional ring‐shaped ground plane
Author(s) -
Ko TingHung,
Row JeenSheen
Publication year - 2018
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.31097
Subject(s) - coaxial antenna , ground plane , optics , turnstile antenna , slot antenna , patch antenna , monopole antenna , antenna measurement , microstrip antenna , antenna factor , circular polarization , physics , antenna (radio) , engineering , electrical engineering , microstrip
Abstract A novel design for circularly polarized antennas with broadband operation is proposed. The proposed antenna structure can be regarded as a three‐dimensional version of a planar ring slot antenna, but no printed circuit board is involved in the structure. Moreover, the circular polarization radiation is achieved by introducing a shorting post into the antenna structure as a perturbation element. Measured results indicate that the 3‐dB‐axial‐ratio bandwidth of the proposed antenna is two times larger than that of the printed ring slot antenna with the same aperture size. Simulation results obtained with HFSS also agree well with the experimental data.