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Compact circularly polarized ZOR and for antenna employing crlh transmission lines
Author(s) -
Liu LiangYuan,
Wang BingZhong
Publication year - 2016
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.29710
Subject(s) - coplanar waveguide , metamaterial , optics , metamaterial antenna , physics , inductance , circular polarization , bandwidth (computing) , multi band device , microwave , microstrip antenna , optoelectronics , antenna (radio) , engineering , electrical engineering , slot antenna , telecommunications , microstrip , voltage
ABSTRACT A metamaterial‐inspired dual‐band antenna with circular polarization is presented in this article. To achieve composite right/left‐hand (CRLH) resonance and circularly polarized (CP) properties, three meander lines act as the shunt inductance, and two slots act as series capacitance. The asymmetric CRLH antenna fed by a coplanar waveguide (CPW) realizes zeroth‐order resonance and first‐order resonance. The dual‐band and CP antenna can work in a 3 dB axial‐ratio bandwidth as much as 8.5% (2.26–2.46 GHz), and 3.0% (3.90–4.02 GHz). Compared with the recently reported metamaterial antennas, the proposed antenna achieves a smaller size, wider CP bandwidth, and higher gain. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:964–969, 2016