Galerkin's method, combined with the method of analytical regularization in the Hankel‐transform domain, is used to analyze a circular‐disk metallic printed antenna. The fundamental effects are investigated, such as the surface‐wave and space‐wave powers and the radiation efficiency. The validity of the cavity (magnetic‐current) model is studied. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 25: 211–216, 2000.

We analyze numerically the polarization-dependent focusing properties of a planar reflective lens that is formed by two parallel layers of the non-uniform "gangbuster surfaces (GS)" above a ground plane. Since these gangbuster surfaces consist of superdense arrays of thin finite-length parallel metallic wires, the desired phase patterns on such a lens surface are achieved by adjusting lengths of these metallic wires for appropriate polarization components. In our analysis, we use the Method of Moment (MoM) and the transmission lines analogy, along with the surface equivalence theorem, to estimate the field intensity in the focal plane. AbstractWe analyze numerically the polarization-dependent focusing properties of a planar

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The radiation of circular-disk resistive microstrip antennas and thin circular-disk dielectric antennas axisymmetrically excited by a vertical electrical dipole is considered. The generalized boundary conditions are used to characterize electromagnetic properties of imperfect disks. The problems are considered in the Hankel transform domain and reduced to infinite matrix equations of the Fredholm second kind, by applying systematically the method of analytical regularization combined with Galerkin's method. A detail numerical analysis offundamental wave phenomena caused by the partial transparency and losses in the disk material is carried out. Optimal antennas, in the sense of increased radiation efficiency andfrequency bandwidth, are found with an account ofsurface waves, disk absorption, and its partial transparency.

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