## High frequency transmission lines |

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### Contents

CHAP PAGE | 1 |

THE PROPAGATION CHARACTERISTICS OF LINES | 30 |

IMPEDANCE TRANSFORMATIONTHE USE OF | 119 |

### Common terms and phrases

admittance amplitude anode arcs attenuation axis capacitive centre conductor characteristic impedance circle diagram coaxial line conductor resistance constant copper correctly terminated corresponding coth critical wavelength dielectric line dimensions discontinuity discussed disk effect electric and magnetic electric field equations expression feeder field components given grid high frequencies impedance value inductance input impedance length of line line integral line length line of length line termination load magnetic field matching maximum Maxwell's equations measurement metre minimum mode nepers ohms open-circuited oscillator outer conductor phase power factor power loss principal wave propagation purely resistive purely transverse Q value quarter-wave Radius reactance reference planes reflected wave reflection coefficient relative permittivity resonance curve resonant line short-circuited line shown in Fig shunt sin2 sinh Pl sinh2 solid dielectric standing wave ratio stub surface terminating impedance transformation transmission line twin line unit length Unscreened Twin valve voltage voltage and current zero