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Design of a MIMO antenna with low ECC for a 4G mobile terminal
Author(s) -
Zhao Xing,
Choi Jaehoon
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.28196
Subject(s) - monopole antenna , antenna measurement , antenna (radio) , coaxial antenna , electronic engineering , antenna efficiency , dipole antenna , engineering , ground plane , electrical engineering , antenna factor , physics , acoustics
A MIMO antenna with low ECC is proposed for a 4G mobile terminal. Apart from the resonant mode induced by the ordinary antenna element, an additional resonant mode is generated when the double ground planes (upper and lower grounds) in the mobile terminal are excited and operate as a radiator. By combining the resonances contributed from both the antenna element and the ground plane, the proposed MIMO antenna realizes wideband over LTE band 13. An inductive coil is used to reduce the antenna volume. Moreover, the proposed MIMO antenna has an excellent ECC value below 0.1 due to the nearly orthogonal radiation patterns from different antenna elements. In addition to the MIMO system for LTE band 13, an additional antenna element is adopted to cover 2–2.7 GHz band. Finally, we suggest a general guideline for designing a small MIMO system with improved ECC and isolation. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:965–970, 2014