Analytical model of interwoven spiral arrays

Andrea Vallecchi, Alexander G. Schuchinsky

Research output: Contribution to journalArticle

5 Citations (Scopus)


Interweaving planar spiral conductors in doubly periodic arrays enable substantially sub-wavelength resonant response along with broadening fractional bandwidth. A self-contained analytical model is proposed to accurately predict the characteristics of the intertwined quadrifilar spiral array near the fundamental resonance. The model, based upon a multiconductor transmission line (MTL) approach, provides physical insight into the unique properties of the distributed interactions between the interleaved counter-wound spiral arms extended beyond a single unit cell and elucidates the mechanisms underlying the array performance at normal and oblique incidence of TE and TM polarised waves. The developed MTL model is instrumental in the design of the artificial surfaces with the specified response.

Original languageEnglish
Pages (from-to)1268-1276
Number of pages9
JournalIET Microwaves, Antennas and Propagation
Issue number15
Publication statusPublished - 09 Dec 2014

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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