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Higher order multipole model of a thin-wire helix
Publikationstyp
Journal Article
Date Issued
2008-09-30
Sprache
English
Author(s)
Institut
Volume
56
Issue
10
Start Page
3166
End Page
3172
Citation
IEEE Transactions on Antennas and Propagation 56 (10): 3166-3172 (2008-10-27)
Publisher DOI
Scopus ID
Publisher
IEEE
We investigate the field scattered from thin-wire helices by means of vector spherical harmonics rendering the fields of generated multipoles of arbitrary order. The excitation is varied in order to yield the characteristic T-matrix of a single helix column by column. The convergence with respect to the number and kind of required multipoles is checked by means of a simple test case. Further, we consider the mutual interaction of two helices. It is shown to be equivalent to an averaging process in terms of the number of required multipoles, which is thus limited. The helix model is then utilized to investigate reflection and transmission properties of a specific periodic arrangement which allows a comparison to a finite element based commercial software tool. © 2008 IEEE.
Subjects
Chiral media
Electromagnetic scattering
Helices
Nonhomogeneous media
Simulation
DDC Class
600: Technik
620: Ingenieurwissenschaften