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Design of multi-antenna feeding for MIMO terminals based on characteristic modes

Miers, Zachary LU ; Li, Hui LU and Lau, Buon Kiong LU (2013) IEEE International Symposium on Antennas and Propagation, 2013 p.182-183
Abstract
Conventional antennas in single-antenna terminals that resonate at frequencies lower than 1 GHz usually rely on the chassis as the main radiator. To effectively exploit chassis excitation for MIMO terminals, each of the multiple antennas is required to excite one distinct chassis mode. However, in today's terminals, there is typically only one chassis mode that can radiate efficiently at frequencies below 1 GHz. Fortunately, it has been shown that minor modifications in the chassis structure can cause more than one mode to resonate at these frequencies. Nevertheless, proper antenna feeding methods are needed to practically tap into these modes. In this paper, we propose a general technique to feed orthogonal chassis modes of a given... (More)
Conventional antennas in single-antenna terminals that resonate at frequencies lower than 1 GHz usually rely on the chassis as the main radiator. To effectively exploit chassis excitation for MIMO terminals, each of the multiple antennas is required to excite one distinct chassis mode. However, in today's terminals, there is typically only one chassis mode that can radiate efficiently at frequencies below 1 GHz. Fortunately, it has been shown that minor modifications in the chassis structure can cause more than one mode to resonate at these frequencies. Nevertheless, proper antenna feeding methods are needed to practically tap into these modes. In this paper, we propose a general technique to feed orthogonal chassis modes of a given conducting structure using the theory of characteristic modes. By separating a radiating structure into individual modal currents, the near field radiating properties are exploited for capacitive or inductive feeding without significant coupling to other orthogonal modes of radiation. As a proof of concept, we apply the technique to feed a modified terminal chassis that has two significant characteristic modes at 0.89 GHz. (Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
IEEE International Symposium on Antennas and Propagation, 2013
pages
2 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE International Symposium on Antennas and Propagation, 2013
conference location
Lake Buena Vista, FL, United States
conference dates
2013-07-07 - 2013-07-13
external identifiers
  • wos:000332766800091
  • scopus:84894210963
ISSN
1522-3965
1947-1491
ISBN
978-1-4673-5317-5
DOI
10.1109/APS.2013.6710752
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
language
English
LU publication?
yes
id
61b9a071-d9ef-488b-ba18-9d5d057a76fe (old id 3562469)
date added to LUP
2016-04-01 10:29:39
date last changed
2024-01-21 15:40:07
@inproceedings{61b9a071-d9ef-488b-ba18-9d5d057a76fe,
  abstract     = {{Conventional antennas in single-antenna terminals that resonate at frequencies lower than 1 GHz usually rely on the chassis as the main radiator. To effectively exploit chassis excitation for MIMO terminals, each of the multiple antennas is required to excite one distinct chassis mode. However, in today's terminals, there is typically only one chassis mode that can radiate efficiently at frequencies below 1 GHz. Fortunately, it has been shown that minor modifications in the chassis structure can cause more than one mode to resonate at these frequencies. Nevertheless, proper antenna feeding methods are needed to practically tap into these modes. In this paper, we propose a general technique to feed orthogonal chassis modes of a given conducting structure using the theory of characteristic modes. By separating a radiating structure into individual modal currents, the near field radiating properties are exploited for capacitive or inductive feeding without significant coupling to other orthogonal modes of radiation. As a proof of concept, we apply the technique to feed a modified terminal chassis that has two significant characteristic modes at 0.89 GHz.}},
  author       = {{Miers, Zachary and Li, Hui and Lau, Buon Kiong}},
  booktitle    = {{IEEE International Symposium on Antennas and Propagation, 2013}},
  isbn         = {{978-1-4673-5317-5}},
  issn         = {{1522-3965}},
  language     = {{eng}},
  pages        = {{182--183}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  title        = {{Design of multi-antenna feeding for MIMO terminals based on characteristic modes}},
  url          = {{https://lup.lub.lu.se/search/files/1889275/7765717.pdf}},
  doi          = {{10.1109/APS.2013.6710752}},
  year         = {{2013}},
}