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:

1966-04-01

Pagination or Media Count:

85.0

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