Modeling and estimation of mutual coupling in a uniform linear array of dipoles

The mutual coupling in a uniform linear array (ULA) of dipoles is calculated using basic electromagnetic concepts. Since the coupling often is unknown and needs to be estimated, a simpler model is proposed based on the electromagnetic analysis. The parameterization of this model is shown to be local...

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Bibliographic Details
Main Author: Svantesson, T.
Format: Conference Proceeding
Language:English
Subjects:
Antenna arrays
Data models
Direction of arrival estimation
Electromagnetic coupling
Electromagnetic measurements
Electromagnetic modeling
Impedance
Mutual coupling
Noise measurement
Voltage
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Description
Summary:The mutual coupling in a uniform linear array (ULA) of dipoles is calculated using basic electromagnetic concepts. Since the coupling often is unknown and needs to be estimated, a simpler model is proposed based on the electromagnetic analysis. The parameterization of this model is shown to be locally unambiguous. A necessary condition for the joint solution of directions and coupling parameters to be unique is also derived. Finally, the directions and coupling parameters are estimated using a maximum likelihood method. It is found that the simpler coupling model with just a few parameters well describes the full electromagnetic model.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.1999.761384