Fundamental bounds on MIMO antennas
(2017) In Technical Report LUTEDX/(TEAT-7247)/1-11/(2017)- Abstract
- Antenna current optimization is often used to analyze the optimal perfor-
mance of antennas. Antenna performance can be quantied in e.g., minimum
Q-factor and maximal gain over Q-factor ratio. The performance of MIMO
antennas is more involved and a single parameter is, in general, not sucient
to quantify it. Here, the capacity of an idealized channel is used as the main
performance quantity. An optimization problem in the current distribution
for optimal capacity, measured in spectral eciency, given a xed Q-factor
and eciency is formulated as a semi-denite optimization problem. A model
order reduction based on characteristic and energy modes is employed to im-
prove the computational eciency. The bound... (More) - Antenna current optimization is often used to analyze the optimal perfor-
mance of antennas. Antenna performance can be quantied in e.g., minimum
Q-factor and maximal gain over Q-factor ratio. The performance of MIMO
antennas is more involved and a single parameter is, in general, not sucient
to quantify it. Here, the capacity of an idealized channel is used as the main
performance quantity. An optimization problem in the current distribution
for optimal capacity, measured in spectral eciency, given a xed Q-factor
and eciency is formulated as a semi-denite optimization problem. A model
order reduction based on characteristic and energy modes is employed to im-
prove the computational eciency. The bound is illustrated by solving the
optimization problem numerically for a rectangular plate. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/record/3a5b0e57-3c33-418f-a284-7778a38dfa29
- author
- Ehrenborg, Casimir ^{LU} and Gustafsson, Mats ^{LU}
- organization
- publishing date
- 2017-04-13
- type
- Book/Report
- publication status
- published
- subject
- in
- Technical Report LUTEDX/(TEAT-7247)/1-11/(2017)
- pages
- 11 pages
- publisher
- Electromagnetic Theory Department of Electrical and Information Technology Lund University Sweden
- language
- English
- LU publication?
- yes
- id
- 3a5b0e57-3c33-418f-a284-7778a38dfa29
- date added to LUP
- 2017-04-13 15:25:06
- date last changed
- 2017-08-02 09:21:40
@techreport{3a5b0e57-3c33-418f-a284-7778a38dfa29, abstract = {Antenna current optimization is often used to analyze the optimal perfor-<br/>mance of antennas. Antenna performance can be quantied in e.g., minimum<br/>Q-factor and maximal gain over Q-factor ratio. The performance of MIMO<br/>antennas is more involved and a single parameter is, in general, not sucient<br/>to quantify it. Here, the capacity of an idealized channel is used as the main<br/>performance quantity. An optimization problem in the current distribution<br/>for optimal capacity, measured in spectral eciency, given a xed Q-factor<br/>and eciency is formulated as a semi-denite optimization problem. A model<br/>order reduction based on characteristic and energy modes is employed to im-<br/>prove the computational eciency. The bound is illustrated by solving the<br/>optimization problem numerically for a rectangular plate.}, author = {Ehrenborg, Casimir and Gustafsson, Mats}, institution = {Electromagnetic Theory Department of Electrical and Information Technology Lund University Sweden}, language = {eng}, month = {04}, pages = {11}, series = {Technical Report LUTEDX/(TEAT-7247)/1-11/(2017)}, title = {Fundamental bounds on MIMO antennas}, year = {2017}, }