## An introduction to the theory and design of electric wave filters |

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### Contents

MATHEMATICAL INTRODUCTION Page | 1 |

ELECTRICAL INTRODUCTION | 20 |

INTRODUCTION TO THE LADDER NETWORK | 28 |

10 other sections not shown

### Common terms and phrases

4-element admittance attenuating-band attenuation coefficient band band-pass filter band-pass half-section band-stop BAND-STOP FILTER basic half-section bridge calculation capacitor coaxial cable complex number components connected constant-A cosh coshP coth crystal filters curve cut-off frequency derived image impedances design impedance determined dissipation factor earth equal equations exceed 30 db exp jcot expression Filter of Fig functions give rise given high-pass filter hyperbolic functions image impedance image transfer coefficient inductor insertion-loss requirements internal impedance kc/s lattice network lattice-arms load logarithmic logB loss low-pass filter m-derived half-section measured mesh method mid-shunt image impedance mis-match nepers obtained ohms outer conductor parallel pass-band phase-shift coefficient pure reactances quantity radians ratio reactances reduced resistance resonant screen seen series arm series-arms series-derived short-circuited shown in Fig shunt arm sinh sinh2 symmetrical tanh tanh2 template terminals transformer wave filter Wheatstone bridge whole section Z1 and Z2 zero Zs and Zt