## Finite Antenna Arrays and FSSA periodic surface is an assembly of identical elements arranged in a one or two-dimensional array. Such surfaces have various effects on incident electromagnetic waves. Their applications range from antennas to stealth aircraft.This book discusses finite antenna arrays and how to minimize the radar cross section of these arrays. "Ben has been the world-wide guru of this technology...Ben Munk has written a book that represents the epitomy of practical understanding." W. Bahret, United States Air Force Frequency selective surfaces (FSSs) have important military and civilian applications including antenna theory, satellite communications and stealth technology Author is an authory on the subject, having been instrumental in the development of stealth technology for the US Air Force Much of the material in this book was deemed classified due to its importance to defence |

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### Contents

Introduction I | 1 |

On Radar Cross Section of Antennas in General | 15 |

Theory | 56 |

Surface Waves on Passive Surfaces of Finite Extent | 84 |

Finite Active Arrays | 136 |

Broadband Wire Arrays | 181 |

Array | 195 |

An Omnidirectional Antenna with Low RCS | 214 |

Summary and Final Remarks | 269 |

Appendix A Determination of Transformation and Position | 281 |

Appendix B Broadband Matching | 288 |

Undercompensation | 299 |

MeanderLine Polarizers for Oblique Incidence | 306 |

On the Scan Versus the Embedded Impedance | 327 |

346 | |

353 | |

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### Common terms and phrases

absorbed Angle in degrees angle of incidence array of dipoles B. A. Munk backscatter backscattered field band bandwidth bistatic scattered field bistatic scattering pattern calculated capacitive Chapter characteristic impedance Column Column column currents complex plane component conjugate match conjugate-matched denoted dielectric slab dipoles discussed edge element currents equivalent circuit evanescent waves example finite array finite x infinite Floquet currents Floquet's Theorem frequency range Furthermore grating lobes hybrids incident field incident plane wave input impedance interelement spacings load impedance ZL low RCS feed lower frequencies meander-line sheets mutual impedance observe obtain ohms omnidirectional antenna parabolic periodic surface phased array problem radiation pattern radome reactance reduced reference element reflection coefficient reflector reradiated resistively loaded scan impedance Section semi-infinite arrays shown in Fig simply Smith chart SPLAT program stick arrays subarrays surface waves terminal impedance transformation circle transmission line triads typical voltage VSWR wire