Accession Number:

AD0483324

Title:

INVESTIGATION OF MICROWAVE DIELECTRIC-RESONATOR FILTERS

Descriptive Note:

Rept. no. 8 (Final), 1 Jun-31 Dec 1965

Corporate Author:

RANTEC CORP CALABASAS CA

Personal Author(s):

• Cohn, Seymour B.
• Torgow, E. N.

Report Date:

1965-12-31

Pagination or Media Count:

57.0

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.

Descriptors:

• *RESONATORS
• *WAVEGUIDE FILTERS
• MAGNETIC FIELDS
• DISKS
• BANDPASS FILTERS
• MINIATURE ELECTRONIC EQUIPMENT
• DIELECTRIC PROPERTIES

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE