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A Bidirectional Left‐Hand Circularly Polarized Antenna Using Dual Rotated Patches
Author(s) -
Deng Changjiang,
Li Yue,
Zhang Zhijun,
Wang Jianwu,
Feng Zhenghe
Publication year - 2013
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.27800
Subject(s) - circular polarization , axial ratio , optics , microwave , turnstile antenna , microstrip antenna , radiation pattern , physics , polarization (electrochemistry) , microstrip , antenna (radio) , patch antenna , coaxial antenna , engineering , electrical engineering , telecommunications , chemistry
In this article, we have proposed a multilayer bidirectional circularly polarized antenna for underground communications. The proposed antenna consists of two slot‐coupled back‐to‐back arranged rotated patches and a microstrip feed‐line. Identical left‐hand circular polarization is achieved in both front and back directions to avoid the undesired polarization mismatch for point‐to‐point connection. A prototype of the proposed antenna is built to validate the design strategy. The measured data, including S‐parameter, axial ratio, radiation pattern, and gain, agree well with the simulation results. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2044–2047, 2013