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Characteristic mode based tradeoff analysis of antenna-chassis interactions for multiple antenna terminals

Li, Hui LU ; Tan, Yi LU ; Lau, Buon Kiong LU ; Ying, Zhinong and He, Sailing (2012) In IEEE Transactions on Antennas and Propagation 60(2). p.490-502
Abstract
The design of multiple antennas in compact mobile terminals is a significant challenge, due to both practical and fundamental design tradeoffs. In this paper, fundamental antenna design tradeoffs of multiple antenna terminals are presented in the framework of characteristic mode analysis. In particular, interactions between the antenna elements and the characteristic modes and their impact on design tradeoffs are investigated in both theory and simulations. The results reveal that the characteristic modes play an important role in determining the optimal placement of antennas for low mutual coupling. Moreover, the ability of antenna elements to localize the excitation currents on the chassis can significantly influence the final... (More)
The design of multiple antennas in compact mobile terminals is a significant challenge, due to both practical and fundamental design tradeoffs. In this paper, fundamental antenna design tradeoffs of multiple antenna terminals are presented in the framework of characteristic mode analysis. In particular, interactions between the antenna elements and the characteristic modes and their impact on design tradeoffs are investigated in both theory and simulations. The results reveal that the characteristic modes play an important role in determining the optimal placement of antennas for low mutual coupling. Moreover, the ability of antenna elements to localize the excitation currents on the chassis can significantly influence the final performance. To demonstrate the effectiveness of the proposed approach, a dual-band, dual-antenna terminal is designed to provide an isolation of over 10 dB for the 900 MHz band without additional matching or decoupling structures. A tradeoff analysis of bandwidth, efficiency, effective diversity gain and capacity is performed over different antenna locations. Finally, three fabricated prototypes verify the simulation results for representative cases. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
mobile communication, MIMO systems, Antenna array mutual coupling
in
IEEE Transactions on Antennas and Propagation
volume
60
issue
2
pages
490 - 502
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000302655100008
  • scopus:84863012797
ISSN
0018-926X
DOI
10.1109/TAP.2011.2173438
language
English
LU publication?
yes
id
aed525db-3825-42c6-abea-8acb0e8eed3d (old id 2026888)
date added to LUP
2011-07-11 09:03:29
date last changed
2017-11-12 03:37:15
@article{aed525db-3825-42c6-abea-8acb0e8eed3d,
  abstract     = {The design of multiple antennas in compact mobile terminals is a significant challenge, due to both practical and fundamental design tradeoffs. In this paper, fundamental antenna design tradeoffs of multiple antenna terminals are presented in the framework of characteristic mode analysis. In particular, interactions between the antenna elements and the characteristic modes and their impact on design tradeoffs are investigated in both theory and simulations. The results reveal that the characteristic modes play an important role in determining the optimal placement of antennas for low mutual coupling. Moreover, the ability of antenna elements to localize the excitation currents on the chassis can significantly influence the final performance. To demonstrate the effectiveness of the proposed approach, a dual-band, dual-antenna terminal is designed to provide an isolation of over 10 dB for the 900 MHz band without additional matching or decoupling structures. A tradeoff analysis of bandwidth, efficiency, effective diversity gain and capacity is performed over different antenna locations. Finally, three fabricated prototypes verify the simulation results for representative cases.},
  author       = {Li, Hui and Tan, Yi and Lau, Buon Kiong and Ying, Zhinong and He, Sailing},
  issn         = {0018-926X},
  keyword      = {mobile communication,MIMO systems,Antenna array mutual coupling},
  language     = {eng},
  number       = {2},
  pages        = {490--502},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {Characteristic mode based tradeoff analysis of antenna-chassis interactions for multiple antenna terminals},
  url          = {http://dx.doi.org/10.1109/TAP.2011.2173438},
  volume       = {60},
  year         = {2012},
}