Fast spectral-domain macro basis function analysis of large arrays of printed antennas
(2014)
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- Authors
- Supervisors
- Craeye, Christophe
- Abstract
- Antenna systems are becoming ubiquitous and the use of antenna arrays has been found essential. The numerical simulation of the arrays, with accurate account of mutual coupling between elements, is hence getting more challenging. The Method-of-Moments, as an integral-equation solver with the help of Macro Basis Function (MBF) approach represents a good framework for this type of problems. In this thesis four important contributions are explained. First, a fast field-modelling MBF approach is proposed to analyze a linear array of printed antennas. Second, ASM-MBF free-space code has been efficiently extended to the case of layered medium and to deal with connected arrays and the eigenmodes conditions. Third, a Spectral-Domain MBF approach exploiting the filtering property of the Fourier transform (FT) of MBFs is proposed to analyze a wide class of antenna array problems. Finally, a long-standing problem in the antenna community since 1990 has been solved through this thesis. It has been a challenge to reconcile the FFT with Green’s function having surface wave poles (singularities). A Contour-FFT based MBF method with Nlog2N complexity has been proposed to solve this issue. The Contour-FFT method holds great promise for the computation of Fourier transform of the singular functions in other fields of engineering and physics.
- Affiliations
Citations
Jha, S. N. (2014). Fast spectral-domain macro basis function analysis of large arrays of printed antennas. https://hdl.handle.net/2078.5/197522