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On the physical limitations of the interaction of a spherical aperture and a random field

Alayon Glazunov, Andres LU ; Gustafsson, Mats LU and Molisch, Andreas LU (2011) In IEEE Transactions on Antennas and Propagation 59(1). p.119-128
Abstract
This paper derives physical limitations on the interactions of antennas exciting TM or TE modes (but not both) and wireless propagation channels. The derivation is based on the spherical vector wave expansion of the electromagnetic field outside a sphere circumscribing the antennas. The result is an extension of the seminal work of Chu on the classical limitations on maximum antenna gain and radiation $Q$ . Rather than maximizing antenna gain in a single direction we obtain physical limitations on the antenna gain pattern, which is directly translated to more condensed parameters, i.e., the instantaneous effective gain $G_{rm i}$ and the mean effective gain $G_{rm e}$ if instantaneous realizations or correlation statistics of the expansion... (More)
This paper derives physical limitations on the interactions of antennas exciting TM or TE modes (but not both) and wireless propagation channels. The derivation is based on the spherical vector wave expansion of the electromagnetic field outside a sphere circumscribing the antennas. The result is an extension of the seminal work of Chu on the classical limitations on maximum antenna gain and radiation $Q$ . Rather than maximizing antenna gain in a single direction we obtain physical limitations on the antenna gain pattern, which is directly translated to more condensed parameters, i.e., the instantaneous effective gain $G_{rm i}$ and the mean effective gain $G_{rm e}$ if instantaneous realizations or correlation statistics of the expansion coefficients of the electromagnetic field are known, respectively. The obtained limitations are on the maximum of $G_{rm i}/Q$ and $G_{rm e}/Q$, which establish a trade-off between link gain and $Q$ . (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Antennas and Propagation
volume
59
issue
1
pages
119 - 128
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • WOS:000286008300013
  • Scopus:78651269751
ISSN
0018-926X
DOI
10.1109/TAP.2010.2090639
language
English
LU publication?
yes
id
5775b752-5f20-4350-9884-157c778727cb (old id 1716530)
date added to LUP
2010-11-15 13:18:00
date last changed
2017-01-15 04:25:45
@article{5775b752-5f20-4350-9884-157c778727cb,
  abstract     = {This paper derives physical limitations on the interactions of antennas exciting TM or TE modes (but not both) and wireless propagation channels. The derivation is based on the spherical vector wave expansion of the electromagnetic field outside a sphere circumscribing the antennas. The result is an extension of the seminal work of Chu on the classical limitations on maximum antenna gain and radiation $Q$ . Rather than maximizing antenna gain in a single direction we obtain physical limitations on the antenna gain pattern, which is directly translated to more condensed parameters, i.e., the instantaneous effective gain $G_{rm i}$ and the mean effective gain $G_{rm e}$ if instantaneous realizations or correlation statistics of the expansion coefficients of the electromagnetic field are known, respectively. The obtained limitations are on the maximum of $G_{rm i}/Q$ and $G_{rm e}/Q$, which establish a trade-off between link gain and $Q$ .},
  author       = {Alayon Glazunov, Andres and Gustafsson, Mats and Molisch, Andreas},
  issn         = {0018-926X},
  language     = {eng},
  number       = {1},
  pages        = {119--128},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {On the physical limitations of the interaction of a spherical aperture and a random field},
  url          = {http://dx.doi.org/10.1109/TAP.2010.2090639},
  volume       = {59},
  year         = {2011},
}