Author(s)

S. Caorsi & A. Perasso

Abstract

Aperture antennas analysis by a numerical integral formation solution S. Caorsi, A. Perasso Department of Biophysical and Electronic Engineering, University of Genoa, Via Opera Pia 11 A, 16145 Genoa, Italy ABSTRACT A numerical electromagnetic code based on an integral boundary formulation, for determining the near and far-zone fields due to arbitrarily shaped conducting bodies in the presence of a known primary source is utilized to solve problems related to aperture antennas. A Modified Magnetic Field Integral Equation (MMFIE) is solved and the moments method is applied involving pulse functions to expand both the equivalent current and the charge. Examples of applications to truncated rectangular waveguides and waveguide/coax adapters are reported. INTRODUCTION The radiation characteristics of aperture antennas such as rectangular waveguides, horns, etc., having small dimensions with respect to the wavelength, must be obtained numerically, since traditi

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