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End‐fire bidirectional circularly polarized composite antenna
Author(s) -
Bhattacharjee Shankar,
Mitra Monojit,
Bhadra Chaudhuri Sekhar Ranjan
Publication year - 2017
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.30541
Subject(s) - circular polarization , turnstile antenna , antenna (radio) , composite number , microstrip antenna , engineering , coaxial antenna , optics , telecommunications , electrical engineering , physics , materials science , composite material , microstrip
A compact planar antenna with circular polarization (CP) along end fire direction is presented. End fire CP is achieved by the combination of patch equivalent electrical monopole and dipole antenna over the same substrate with a single feed. The calculated dimensions of the two antennas obtained through mathematical analysis are successful in achieving a perfect CP in the end fire direction provided a proper phase difference is maintained between them. Almost symmetrical bi‐directional radiation is obtained at both the end fire directions. Additional merits of the antenna include light weight, compactness, and simple design. The proposed antenna showed an enhanced axial ratio bandwidth of 22.2% with maximum gain of 3.54 dB. Mathematical analysis and simulation results were validated with experimental results for the given antenna. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1382–1388, 2017