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Influence of user hand on the performance of a multiband diversity antenna

Plicanic, Vanja LU ; Lau, Buon Kiong LU and Ying, Zhinong (2008) 4th COST2100 Management Committee Meeting, 2008
Abstract
The increasing demand on improved reception and high data throughput brings into focus the design of compact multiband antenna terminals with diversity reception capability. In particular, the influence of user on diversity performance is of current interest. In this paper, the diversity performance of compact tri-band antennas (WCDMA850, WCDMA1800 and UMTS 2100) for mobile handsets is evaluated in the data mode position. The results indicate that the user hand has a significant negative effect on the mean effective gains of the diversity antennas. On the other hand, the signal correlation is relatively unaffected by the hand, and it even improved for the WCDMA850 band. However, the decrease in correlation between the branches in the... (More)
The increasing demand on improved reception and high data throughput brings into focus the design of compact multiband antenna terminals with diversity reception capability. In particular, the influence of user on diversity performance is of current interest. In this paper, the diversity performance of compact tri-band antennas (WCDMA850, WCDMA1800 and UMTS 2100) for mobile handsets is evaluated in the data mode position. The results indicate that the user hand has a significant negative effect on the mean effective gains of the diversity antennas. On the other hand, the signal correlation is relatively unaffected by the hand, and it even improved for the WCDMA850 band. However, the decrease in correlation between the branches in the WCDMA850 band is inadequate to offset the degradation in diversity system gain resulting from the reduced mean effective gains. Moreover, the loss of efficiency due to mutual coupling is particularly severe at the WCDMA850 band. Consequently, only a small diversity system gain of less than 1 dB is obtained for the lowest band, whereas a 5 dB gain is achieved for the higher bands. (Less)
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Contribution to conference
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conference name
4th COST2100 Management Committee Meeting, 2008
language
English
LU publication?
yes
id
4d4a5078-8b74-4d00-86a5-9003e4833685 (old id 1269051)
date added to LUP
2008-11-20 12:57:28
date last changed
2016-04-16 11:49:36
@misc{4d4a5078-8b74-4d00-86a5-9003e4833685,
  abstract     = {The increasing demand on improved reception and high data throughput brings into focus the design of compact multiband antenna terminals with diversity reception capability. In particular, the influence of user on diversity performance is of current interest. In this paper, the diversity performance of compact tri-band antennas (WCDMA850, WCDMA1800 and UMTS 2100) for mobile handsets is evaluated in the data mode position. The results indicate that the user hand has a significant negative effect on the mean effective gains of the diversity antennas. On the other hand, the signal correlation is relatively unaffected by the hand, and it even improved for the WCDMA850 band. However, the decrease in correlation between the branches in the WCDMA850 band is inadequate to offset the degradation in diversity system gain resulting from the reduced mean effective gains. Moreover, the loss of efficiency due to mutual coupling is particularly severe at the WCDMA850 band. Consequently, only a small diversity system gain of less than 1 dB is obtained for the lowest band, whereas a 5 dB gain is achieved for the higher bands.},
  author       = {Plicanic, Vanja and Lau, Buon Kiong and Ying, Zhinong},
  language     = {eng},
  title        = {Influence of user hand on the performance of a multiband diversity antenna},
  year         = {2008},
}