INVESTIGATION OF MICROWAVE DIELECTRIC-RESONATOR FILTERS

Abstract

Coupling between dielectric-disk resonators, which are axially oriented along the center line of a cut-off circular tube, has been analyzed and a coupling coefficient formula has been derived. The accuracy of the formula is sufficient for most practical purposes. A band-stop dielectric-disk resonator coupled to a propagating strip line is treated and the formula for external Q, Q sub ex, is derived. Response curves are given for three waveguide directional filters utilizing dielectric resonators, which in all cases verified directional filter behavior. The configurations tried were: a pair of single-mode disks, one dual-mode disk, and two dual-mode disks. Several TEM-line directional filters also are discussed. External loading of the end resonators of a multiple disk band pass filter is studied in the case of a parallel plane boundary and formulas for Q sub ex are derived. Various techniques are described for joining band-pass and band-stop filters to form three-port diplexers.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1965
Accession Number
AD0483324

Entities

People

  • E. N. Torgow
  • Seymour B. Cohn

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Dielectric Permittivity
  • Electromagnetic Fields
  • Experimental Data
  • Filters
  • Geometry
  • Lc Circuits
  • Magnetic Dipoles
  • Magnetic Fields
  • Materials
  • New Jersey
  • Orientation (Direction)
  • Resonant Frequency
  • Schematic Diagrams
  • Strip Transmission Lines
  • Transmission Lines
  • Waveguides

Fields of Study

  • Physics

Readers

  • Microwave Engineering.