Accession Number : AD0481374

Title :   NOVEL MICROWAVE FILTER DESIGN TECHNIQUES.

Descriptive Note : Quarterly progress rept. no. 3, 1 Oct-31 Dec 65,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CA

Personal Author(s) : Young, Leo ; Weller, D. B. ; Schiffman, B. M. ; Cristal, E. G. ; Karp, A.

Report Date : APR 1966

Pagination or Media Count : 85

Abstract : A trial bandstop filter in stripline form was designed with the aid of the elliptic-function bandstop filter design tables published in Quarterly Progress Report 2. The tests results were found to be in good agreement with the theory. A magnetically tunable UHF bandpass filter designed in strip transmission line and with two disk-shaped resonators of yttrium-iron-garnet (YIG) is described. Single crystals of both pure YIG and gallium-substituted YIG were used. Re-entrant directional couplers with direct-coupled center conductors are often easier to realize than similar re-entrant couplers that have no direct coupling between center conductors. New design equations for the former type are presented. (Author)

Descriptors :   *BANDSTOP FILTERS, WAVEGUIDE FILTERS, ULTRAHIGH FREQUENCY, TRANSMISSION LINES, YTTRIUM, IRON ALLOYS, GARNET, GALLIUM ALLOYS, SINGLE CRYSTALS, WAVEGUIDE CIRCULATORS, COAXIAL FILTERS, DOPING, RESONATORS, FERROMAGNETIC MATERIALS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE