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Synthetic-Functions Analysis of Large Aperture-Coupled Antennas

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4 Author(s)
Matekovits, L. ; Dept. of Electron., Politec. di Torino, Torino, Italy ; Vecchi, G. ; Bercigli, M. ; Bandinelli, M.

The application is described the synthetic function expansion (SFX) approach to large arrays of aperture-coupled antennas. The problem is formulated in terms of coupled magnetic-field continuity integral equations (MFCIE) and electric field integral equations (EFIE), and discretized via the method of moments (MoM). The SFX is a domain-decomposition technique; on each block of the broken-down structure, functions are generated with domain over the entire block. These ldquosynthetic functionsrdquo (SF) are obtained from the solution of the electromagnetic problem for the isolated block upon specification of appropriate sources on the block bounding box, and from a further singular value decomposition (SVD)-based procedure to select the relevant terms. The complete problem is solved using the SFs as basis functions for the MoM. This results in a strong reduction of the MoM matrix size. Applications are presented to configurations of open and cavity-backed radiators.

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Antennas and Propagation, IEEE Transactions on  (Volume:57 ,  Issue: 7 )