## EMC Analysis Methods and Computational ModelsDescribes and illustrates various modeling techniques which are applicable to the area of EMC and includes material previously available only in international reports or other hard-to-obtain references. Electromagnetic topology, lumped-parameter circuit models, the radiation process, scalar diffraction theory for apertures, transmission line modeling, and models for shielding are among the topics discussed. The accompanying disk contains four programs based on the models developed in the text and can be used to calculate diverse transmission line responses. |

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### Contents

INTRODUCTION TO MODELING AND EMC | 3 |

SYSTEM DECOMPOSITION FOR EMC MODELING | 26 |

References | 39 |

RADIATION MODELS FORWire ANTENNAS | 113 |

Conducting Earth | 150 |

References | 175 |

RADIATION DIFFRACTION AND SCATTERING | 183 |

Problems | 217 |

EFFECTS OF A LOSSY GROUND ON tranSMISSION | 395 |

Ground Impedance | 406 |

References | 443 |

Shielded CABLES | 451 |

Admittance | 453 |

References | 501 |

SHIELDING | 505 |

547 | |

### Common terms and phrases

admittance analysis analytical aperture approximate assumed behavior BLT equation braided cable calculated capacitance Chapter characteristic impedance charge components compute conductor configuration consider current distribution current element current source defined determined developed dielectric discussed E-field EMI source equivalent circuit evaluated example excitation field expression field coupling Fourier transform frequency domain geometry given by Eq Green's function ground plane IEEE Trans illustrates incident field induced current integral equation internal lightning line current load current located loop low frequencies magnetic field matrix measured method multiconductor line numerical open-circuit penetration per-unit-length perfectly conducting ground plane wave problem propagation constant radiated field radius reflection coefficient resonances scattering shield shown in Figure solution spectrum surface telegrapher's equations termination Thévenin transfer impedance transient response transmission line transmission line model two-port two-port network values vector vertically polarized victim circuit voltage and current voltage source waveform wire