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Design of bandwidth enhanced and multiband MIMO antennas using characteristic modes

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Author

Summary, in English

Recent work has shown that, with the help of the Theory of Characteristic Modes (TCM), minor modifications of the terminal chassis can facilitate the design of orthogonal MIMO antennas with viable bandwidth at frequencies below 1 GHz. Herein, a new framework is proposed to further exploit TCM to enhance the performance of the orthogonal MIMO antennas. By correlating the characteristic currents and near fields of modes with high modal significance in a given frequency band, a single feed may be designed to excite multiple modes, leading to enlarged bandwidth. Similarly, the correlation of characteristic currents and near fields across different bands provides candidate modes that can be excited for multiband operation using a single feed. Moreover, the impedance matching of these modes can be improved by additional structural manipulation. As proof of concept, a dual-band (818-896MHz, 1841-2067MHz), dual-antenna prototype was designed on a 130 mm by 66 mm chassis for LTE operation. Full-wave simulation results were experimentally verified with a fabricated prototype.

Publishing year

2013

Language

English

Pages

1696-1699

Publication/Series

IEEE Antennas and Wireless Propagation Letters

Volume

12

Document type

Journal article (letter)

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Status

Published

Project

  • Systematic Antenna Design Using the Theory of Characteristic Modes
  • EIT_ANTCHN Antenna-Channel Harmonization for Throughput Enhancement in Advanced Mobile Terminals
  • EIT_Optantsys Novel Antenna System Design Paradigm for High Performance Mobile Communications

Research group

  • Electromagnetic theory
  • Radio Systems

ISBN/ISSN/Other

  • ISSN: 1548-5757