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Mean effective gain of antennas in a wireless channel

Alayon Glazunov, Andres LU ; Molisch, Andreas LU and Tufvesson, Fredrik LU (2009) In IET Microwaves, Antennas & Propagation 3(2). p.214-227
Abstract
The mean effective gain (MEG) is one of the most important parameters for the characterisation of antennas in wireless channels. An analysis of some fundamental properties of the MEG is provided and corresponding physical interpretations are given. Three points are analysed in detail: (i) closed-form expressions for MEG in a mixed environment with both stochastic and deterministic components are provided, showing that the MEG can be written as a sum of gains for the deterministic and stochastic components, (ii) it is shown that under some assumptions, the propagation channel and the antenna are equivalent in the sense that the impact of the channel cross-polarisation ratio (XPR) and the antenna effective cross-polar discrimination on the... (More)
The mean effective gain (MEG) is one of the most important parameters for the characterisation of antennas in wireless channels. An analysis of some fundamental properties of the MEG is provided and corresponding physical interpretations are given. Three points are analysed in detail: (i) closed-form expressions for MEG in a mixed environment with both stochastic and deterministic components are provided, showing that the MEG can be written as a sum of gains for the deterministic and stochastic components, (ii) it is shown that under some assumptions, the propagation channel and the antenna are equivalent in the sense that the impact of the channel cross-polarisation ratio (XPR) and the antenna effective cross-polar discrimination on the MEG are symmetrical, (iii) based on the fact that MEG depends on random variables, such as the XPR and antenna rotations because of user's movements, the average, the minimum and maximum MEG of antennas are defined, respectively. Finally, the maximum effective gain of antennas is derived and shown that it is bounded by 4 pi eta(rad), where eta(rad) is the radiation efficiency of the antenna. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IET Microwaves, Antennas & Propagation
volume
3
issue
2
pages
214 - 227
publisher
Institution of Engineering and Technology
external identifiers
  • wos:000264047200005
  • scopus:61449215241
ISSN
1751-8725
DOI
10.1049/iet-map:20080041
language
English
LU publication?
yes
id
ef6682d0-8cce-459c-a0d7-b53a6134de38 (old id 1404862)
date added to LUP
2009-06-10 15:50:15
date last changed
2017-11-12 03:29:33
@article{ef6682d0-8cce-459c-a0d7-b53a6134de38,
  abstract     = {The mean effective gain (MEG) is one of the most important parameters for the characterisation of antennas in wireless channels. An analysis of some fundamental properties of the MEG is provided and corresponding physical interpretations are given. Three points are analysed in detail: (i) closed-form expressions for MEG in a mixed environment with both stochastic and deterministic components are provided, showing that the MEG can be written as a sum of gains for the deterministic and stochastic components, (ii) it is shown that under some assumptions, the propagation channel and the antenna are equivalent in the sense that the impact of the channel cross-polarisation ratio (XPR) and the antenna effective cross-polar discrimination on the MEG are symmetrical, (iii) based on the fact that MEG depends on random variables, such as the XPR and antenna rotations because of user's movements, the average, the minimum and maximum MEG of antennas are defined, respectively. Finally, the maximum effective gain of antennas is derived and shown that it is bounded by 4 pi eta(rad), where eta(rad) is the radiation efficiency of the antenna.},
  author       = {Alayon Glazunov, Andres and Molisch, Andreas and Tufvesson, Fredrik},
  issn         = {1751-8725},
  language     = {eng},
  number       = {2},
  pages        = {214--227},
  publisher    = {Institution of Engineering and Technology},
  series       = {IET Microwaves, Antennas & Propagation},
  title        = {Mean effective gain of antennas in a wireless channel},
  url          = {http://dx.doi.org/10.1049/iet-map:20080041},
  volume       = {3},
  year         = {2009},
}