INVESTIGATION OF MICROWAVE DIELECTRIC-RESONATOR FILTERS

Abstract

The use of dielectric resonators in band-stop filters is discussed. The most promising application is in TEM transmission-line structures. The coupling between a dielectric resonator and a propagating TEM line is studied. Formulas are derived which, to an accuracy adequate for most applications, predict the external Q (Qex) of the coupled resonator as a function of the resonator's parameters and its position in the transmissionline cross section. Application of the Qex formulas to band-stop filter design is investigated. A formula is presented expressing the required Qex values of the resonators in terms of the elements of a low-pass-prototype filter. Several band-stop filters were designed and tested. Agreement between measured and theoretical performance is excellent.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1964
Accession Number
AD0461318

Entities

People

  • E. N. Torgow
  • S. B. Cohn

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Circuits
  • Dielectrics
  • Electronics
  • Electronics Laboratories
  • Equivalent Circuits
  • Experimental Data
  • Frequency
  • Insertion Loss
  • Losses
  • Materials
  • Measurement
  • Microwave Filters
  • Research Facilities
  • Resonant Frequency
  • Resonators
  • Transmission Lines
  • Waveguides

Fields of Study

  • Engineering
  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Microwave Engineering.