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Design of multimode multiband antennas for MIMO terminals using characteristic mode analysis

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Author

Summary, in English

Characteristic mode analysis provides unparalleled insights into designing high performance multiple-input multiple-output (MIMO) terminal antennas at frequencies where the antenna elements are constrained to be electrically small. Conventionally, an electrically small single-antenna utilizes the fundamental characteristic mode of the terminal chassis to obtain sufficient bandwidth while maintaining high radiation efficiency. However, modern MIMO terminals require two or more antennas per frequency band, and they tend to excite the same fundamental chassis mode, resulting in severe coupling and correlation, and poor overall system performance. Recently, characteristic mode analysis of the chassis is proposed to design highly efficient multimode multiband MIMO antennas with significant bandwidth using electrically small feed elements. Two distinct and excitable characteristic modes were created at frequencies above and below 1 GHz, for a typical smartphone’s form factor. This paper provides an overview of the method and highlights its versatility for practical implementation in standard plastic cased smartphones as well as in the popular metal-bezeled smartphones, with only minor modifications to the chassis.

Publishing year

2014

Language

English

Pages

1429-1430

Publication/Series

IEEE International Symposium on Antennas and Propagation, 2014

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Conference name

IEEE International Symposium on Antennas and Propagation, 2014

Conference date

2014-07-06 - 2014-07-11

Conference place

Memphis, United States

Status

Published

Project

  • Systematic Antenna Design Using the Theory of Characteristic Modes
  • EIT_Optantsys Novel Antenna System Design Paradigm for High Performance Mobile Communications

Research group

  • Radio Systems
  • Electromagnetic theory

ISBN/ISSN/Other

  • ISSN: 1947-1491
  • ISSN: 1522-3965
  • ISBN: 978-1-4799-3538-3