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Closely-packed UWB MIMO/diversity antenna with different patterns and polarizations for USB dongle applications

Zhang, Shuai LU ; Lau, Buon Kiong LU ; Sunesson, Anders LU and He, Sailing (2012) In IEEE Transactions on Antennas and Propagation 60(9). p.4372-4380
Abstract
A closely-packed ultrawideband (UWB) multiple- input multiple-output (MIMO)/diversity antenna (of two elements) with a size of 25 mm by 40 mm is proposed for USB dongle applications. Wideband isolation can be achieved through the different patterns and polarizations of the two antenna elements. Moreover, the slot that is formed between the monopole and the ground plane of the half slot antenna is conveniently used to further enhance the isolation at the lower frequencies and to provide an additional resonance at one antenna element in order to increase its bandwidth. The underlying mechanisms of the antenna’s wide impedance bandwidth and low mutual coupling are analyzed in detail. Based on the measurement results, the proposed antenna can... (More)
A closely-packed ultrawideband (UWB) multiple- input multiple-output (MIMO)/diversity antenna (of two elements) with a size of 25 mm by 40 mm is proposed for USB dongle applications. Wideband isolation can be achieved through the different patterns and polarizations of the two antenna elements. Moreover, the slot that is formed between the monopole and the ground plane of the half slot antenna is conveniently used to further enhance the isolation at the lower frequencies and to provide an additional resonance at one antenna element in order to increase its bandwidth. The underlying mechanisms of the antenna’s wide impedance bandwidth and low mutual coupling are analyzed in detail. Based on the measurement results, the proposed antenna can cover the lower UWB band of 3.1-5.15 GHz, and within the required band, the isolation exceeds 26 dB. The gains and total efficiencies of the two antenna elements are also measured. Furthermore, a chassis mode can be excited when a physical connection is required between the ground planes of the two antenna elements. Without affecting the performance of the half slot element, the monopole can now cover the band of 1.78-3 GHz, apart from the UWB band. The proposed antenna structure is found to provide good MIMO/diversity performance, with very low envelope correlation of less than 0.1 across the UWB band. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Antennas and Propagation
volume
60
issue
9
pages
4372 - 4380
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000308460600037
  • scopus:84866089071
ISSN
0018-926X
DOI
10.1109/TAP.2012.2207049
project
EIT_Optantsys Novel Antenna System Design Paradigm for High Performance Mobile Communications
language
English
LU publication?
yes
id
5c34da93-4c93-4a7e-b704-477fc24f4ac0 (old id 2493189)
date added to LUP
2012-04-23 16:41:09
date last changed
2017-11-12 03:38:36
@article{5c34da93-4c93-4a7e-b704-477fc24f4ac0,
  abstract     = {A closely-packed ultrawideband (UWB) multiple- input multiple-output (MIMO)/diversity antenna (of two elements) with a size of 25 mm by 40 mm is proposed for USB dongle applications. Wideband isolation can be achieved through the different patterns and polarizations of the two antenna elements. Moreover, the slot that is formed between the monopole and the ground plane of the half slot antenna is conveniently used to further enhance the isolation at the lower frequencies and to provide an additional resonance at one antenna element in order to increase its bandwidth. The underlying mechanisms of the antenna’s wide impedance bandwidth and low mutual coupling are analyzed in detail. Based on the measurement results, the proposed antenna can cover the lower UWB band of 3.1-5.15 GHz, and within the required band, the isolation exceeds 26 dB. The gains and total efficiencies of the two antenna elements are also measured. Furthermore, a chassis mode can be excited when a physical connection is required between the ground planes of the two antenna elements. Without affecting the performance of the half slot element, the monopole can now cover the band of 1.78-3 GHz, apart from the UWB band. The proposed antenna structure is found to provide good MIMO/diversity performance, with very low envelope correlation of less than 0.1 across the UWB band.},
  author       = {Zhang, Shuai and Lau, Buon Kiong and Sunesson, Anders and He, Sailing},
  issn         = {0018-926X},
  language     = {eng},
  number       = {9},
  pages        = {4372--4380},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {Closely-packed UWB MIMO/diversity antenna with different patterns and polarizations for USB dongle applications},
  url          = {http://dx.doi.org/10.1109/TAP.2012.2207049},
  volume       = {60},
  year         = {2012},
}