## A Low Loss Launcher for the Beam Waveguide |

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### Contents

The Dual Mode Conical Horn | 20 |

34 Kmc Dual Mode Horn | 36 |

Summary and Conclusions | 49 |

1 other sections not shown

### Common terms and phrases

2R sin 9 actual far field amplitude distribution Antenna with Suppressed aperture dimensions aperture distribution appendix beam waveguide launcher Bessel Functions chapter circular waveguide component equations constant copper sheath correcting lens course of searching DISTANCE FROM AXIS dual mode conical dual mode horn dy dx E-plane E0TE equation 2-6 Equations 3-1 equations 3-20 field distribution field pattern field radiation pattern figure 2-1b Fraunhofer region Goubau highly efficient launcher Horn Antenna IEEE Trans infinite metal wall J.B. Beyer J.R. Christian JQ(x linear polarization Low Loss Launcher low sidelobe magnetic dipoles mandrel measured method Microwave Journal mode conical horn P.D. Potter phase deviation plane phase front plotted in figure probe problem propagate ratio rectangular horn operating region of interest shown in figure sidelobe levels Sidelobes and Equal Suppressed Sidelobes Tables of Integrals taper TE1Q theoretical far field thesis tion type of aperture valid vector potential xtotal