idealized polar pattern | Long Wires with Standing Waves |

impedance matching | Impedance-matching Series Line Sections |

| Parallel Stub Lines for Impedance Matching |

| Impedance Matching with an Inductor or Capacitor |

impedance matching techniques | Impedance-matching Techniques |

impedance transformation | Generalized Case of Impedance Transformation |

| Multiple Tuning for Impedance Transformation |

impedance-matching network | Graphical Synthesis of Impedance-matching Networks |

impedance-matching transformer | Tapered Transmission-line |

important transmission-line equation | Important Transmission-line Equations |

increasing bandwidth | Increasing Bandwidth of Vertical Radiators |

inductor | Impedance Matching with an Inductor or Capacitor |

infinite and finite lines | Infinite and Finite Lines |

input impedance | Input Impedance to Any Radiator in an Array of Dipoles |

| Input Impedance to Each Radiator in a Directive Array |

intermittent coverage | Intermittent Coverage from Sky Waves |

introduction | Introduction |

inverted-v traveling-wave antenna | Traveling-wave Antenna for Vertically Polarized Transmission |

ionosphere | High-frequency Propagation |

ionosphere data | Ionosphere Data |