On the physical limitations of the interaction of a spherical aperture and a random field
(2011) In IEEE Transactions on Antennas and Propagation 59(1). p.119128 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 tradeoff between link gain and $Q$ . (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/record/1716530
 author
 Alayon Glazunov, Andres ^{LU} ; Gustafsson, Mats ^{LU} and Molisch, Andreas ^{LU}
 organization
 publishing date
 2011
 type
 Contribution to journal
 publication status
 published
 subject
 in
 IEEE Transactions on Antennas and Propagation
 volume
 59
 issue
 1
 pages
 119  128
 publisher
 IEEEInstitute of Electrical and Electronics Engineers Inc.
 external identifiers

 WOS:000286008300013
 Scopus:78651269751
 ISSN
 0018926X
 DOI
 10.1109/TAP.2010.2090639
 language
 English
 LU publication?
 yes
 id
 5775b7525f2043509884157c778727cb (old id 1716530)
 date added to LUP
 20101115 13:18:00
 date last changed
 20161013 04:23:58
@misc{5775b7525f2043509884157c778727cb, 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 tradeoff between link gain and $Q$ .}, author = {Alayon Glazunov, Andres and Gustafsson, Mats and Molisch, Andreas}, issn = {0018926X}, language = {eng}, number = {1}, pages = {119128}, publisher = {ARRAY(0x95a5a08)}, 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}, }