Effects of mutual coupling in small dipole array antennas
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Authors
Yeo, Chee Beng
Subjects
Advisors
Jenn, David
Date of Issue
2002-03
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
In the classical approach of antenna theories, mutual coupling between elements is usually ignored. However, depending on the application, errors due to mutual coupling can be significant. This thesis investigates the effects of mutual coupling between elements in small dipole arrays via software simulations that use the Methods of Moment, a numerical technique that accounts for mutual coupling, as opposed to the classical approach, which does not. The simulations show that the active impedance of any element in an array depends on both the self and mutual impedances and that the terminal current phases, hence directivity, of an array are affected by mutual coupling such that the array pattern deviates from that defined by classical theoretical approach. In an active element pattern approach, the mutual couplings in an array are accounted for through the active element, making this approach a viable one to study the radiation patterns of practical dipole arrays. The examination of a small array provides a useful environment in which to develop, optimize and evaluate the radiating elements, thus providing better understanding of the effects of mutual coupling in antenna arrays and facilitating the design of corresponding compensation techniques in practical arrays.
Type
Thesis
Description
Series/Report No
Department
Systems Engineering (SE)
Identifiers
NPS Report Number
Sponsors
Funding
Format
xiv, 51 p. : ill. ;
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
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Copyright is reserved by the copyright owner.