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Characteristic Mode Analysis of Multi-Octave Asymmetric Dipoles

Date Issued
2020
Author(s)
Tibaldi A.
•
Virone G.
•
•
Paonessa F.
•
Addamo G.
•
Peverini O.A.
•
Lumia M.
•
Ciorba L.
DOI
Abstract
This paper discusses the impedance and front-to-back ratio performance of asymmetric dipoles. These parameters are very important when the antennas are placed over a conductive ground plane and should operate over multi-octave frequency bands. The operation of these antennas is usually described relying on analogies with more classical structures such as symmetric dipoles and tapered slot antennas. To provide a solid theoretical background to this intuition, this work presents the application of characteristic mode analysis to multi-octave dipole antennas. Firstly, a brief review of the main characteristic mode content is presented. Then, characteristic mode analysis is applied to three antenna concepts to emphasize how their geometry impacts on the relevant figures of merit. This allows to draw some conclusions on the achievable performance by different designs.
Coverage
2020 14th European Conference on Antennas and Propagation (EuCAP)
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1
Conferenece
2020 14th European Conference on Antennas and Propagation (EuCAP)
Conferenece place
Copenhagen, Denmark
Conferenece date
15-20 March, 2020
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open.access
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