## Analysis of Metallic Antennas and ScatterersThe authors present a relatively simple, computer-oriented, general and unified approach to the analysis of metallic antennas and scatterers (of electrically small and medium sizes), based largely on their own original work. The method appears to offer superiority over existing alternatives by circumventing most of the difficulties encountered by those methods. It should be of considerable importance to working antenna engineers and researchers. Introduction; Modelling of geometry of metallic antennas and scatterers; Approximation of current along generalised wires and over generalised quadrilaterals; Treatment of excitation; Electromagnetic field of currents over generalised surface elements; Solution of equations for current distribution; Numerical examples illustrating the choice of optimum elements of the method; Numerical examples illustrating the possibilities of the method; References; Appendices; Index. |

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### Contents

Modelling of geometry of metallic antennas and scatterers | 16 |

Approximation of current along generalised wires and over | 45 |

Treatment of excitation | 79 |

Electromagnetic field of currents over generalised surface | 92 |

Solution of equations for current distribution | 105 |

Numerical examples illustrating the choice of optimum | 122 |

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### Common terms and phrases

adopted antenna sketched antennas and scatterers approximation of current arbitrary attachment modes basis functions bilinear surfaces co-ordinate system coaxial line considered continuity equation current approximation current distribution current expansions defined delta-function dipole doublets EFIE electric-field vector electrical length electrically small electromagnetic evaluation example expansion in eqn experimental results expression in eqn field point field vectors frequency Galerkin method generalised quadrilaterals generalised wires ground plane impedance integral equation interconnection Lamé coefficients least-squares magnetic-current frill magnetic-field vector matching points metallic antennas method of moments modelling of geometry monopole antenna monopole wire antenna normalised number of unknowns overdetermined system parametric equation patches point-matching method polynomial expansion problem radius results from Reference Section shown in Figure sketched in Figure solution solving spline square plate structures subdomain surface currents surface elements surface-current surface-current-density vector theoretical results obtained triangles truncated cones wavelength wire ends wire segment wire-to-plate junctions zero