A New Procedure for Assessing the Sensitivity of Antennas Using the Unscented Transform

In this communication, we introduce a new procedure to analyze the sensitivity of antennas. The procedure is based on the method of unscented transform (UT) developed by Julier and Uhlman in 1997. Although the UT is used in control engineering, the method has only recently been applied to electromag...

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Vydáno v:IEEE transactions on antennas and propagation Ročník 58; číslo 3; s. 988 - 993
Hlavní autoři: de Menezes, L.R.A.X., Soares, A.J.M., Silva, F.C., Terada, M.A.B., Correia, D.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.03.2010
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Access methods and protocols, osi model
Antennas
Applied classical electromagnetism
Applied sciences
Computational modeling
Control engineering
Convergence
electromagnetic simulation
Electromagnetic wave propagation, radiowave propagation
Electromagnetism; electron and ion optics
Exact sciences and technology
Finite difference methods
Fundamental areas of phenomenology (including applications)
Mathematical models
Monte Carlo methods
Numerical analysis
Physics
Radiocommunications
Random variables
Reflector antennas
sensitivity
Sensitivity analysis
Studies
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Time domain analysis
Transforms
Uncertainty
unscented transform
Wire
Monte Carlo method
Wire antenna
Sensitivity analysis
Electromagnetism
Transmission protocol
Numerical method
electromagnetic simulation
Optimization
Reflector antenna
Monte Carlo methods
unscented transform
Numerical simulation
Control method
Routing protocols
sensitivity
Random variable
Antennas
ISSN:0018-926X, 1558-2221
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Popis
Shrnutí:In this communication, we introduce a new procedure to analyze the sensitivity of antennas. The procedure is based on the method of unscented transform (UT) developed by Julier and Uhlman in 1997. Although the UT is used in control engineering, the method has only recently been applied to electromagnetic (EM) problems. This work describes the application of the UT both for single and multiple random variables cases. The UT method is applied to problems using examples involving different types of antennas. In each example, the UT method is combined with different numerical methods to perform the sensitivity analysis of wire or reflector antennas. In the first example, the results were validated with results from the Monte Carlo technique. The second example investigated the convergence of the UT procedure, and the final example compared UT results with measured data. The main conclusion is that UT is a feasible alternative to the popular Monte Carlo technique, with the advantage of being far less computationally expensive.
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ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2009.2037838