Impedance and quality factor of mutually coupled multiport antennas

In this study, expressions for the radiation quality factor Q and the input impedance seen at any terminal of a multiport antenna are derived. It is shown computationally that because of the possibility to adjust the antenna current distribution through suitable feeding/loading a multiport antenna c...

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Bibliographic Details
Published in:Microwave and optical technology letters 2008-08, Vol.50 (8), p.2034-2039
Main Authors: Sten, Johan C.-E., Hirvonen, Mervi
Format: Article
Language:English
Subjects:
impedance matrix
input impedance
multiport antenna
mutual coupling
quality factor
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Summary:In this study, expressions for the radiation quality factor Q and the input impedance seen at any terminal of a multiport antenna are derived. It is shown computationally that because of the possibility to adjust the antenna current distribution through suitable feeding/loading a multiport antenna can perform lower Qs than a similar single‐port antenna. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2034–2039, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23564
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.23564