Accession Number:

AD0653638

Title:

RESEARCH ON DISTRIBUTED FERRITES FOR CROSSED-FIELD MICROWAVE DEVICES

Descriptive Note:

Quarterly rept. no. 3, 10 Aug-9 Nov 1966

Corporate Author:

RAYTHEON CO WALTHAM MA MICROWAVE AND POWER TUBE DIV

Personal Author(s):

• Smith, William A.
• Masse, Daniel
• Osepchuk, John M.
• Plumridge, Robert
• Tisdale, Lawrence

Report Date:

1967-01-01

Pagination or Media Count:

44.0

Abstract:

The objective of this program is to develop the knowledge and technology necessary to take full advantage of the unidirectional attenuative properties of ferrites in achieving improved gain and bandwidth in crossed-field microwave amplifiers and oscillators. During the third quarterly period, activities included cold testing of ferrite materials in conjunction with an L- band helix, and an investigation of narrow linewidth ferrites in an S-band Amplitron. Theoretical and Experimental studies have indicated that broadbanding of ferrites in a CFA can be accomplished by broader linewidths, porous ferrites, or by a combination of both methods. Measurements made on a porous magnesium ferrite support this conclusion. Bonding of ferrites to dielectric can be effected by the use of glass frit, and bonding to copper can be accomplished by sputtering nickel onto the ferrite in an argon atmosphere and subsequently brazing with silfos solder.

Descriptors:

• *CROSSED FIELD DEVICES
• *FERRITES
• BACKWARD WAVE AMPLIFIERS
• BONDING
• COPPER
• DELAY LINES
• DIELECTRIC PROPERTIES
• GLASS
• MICROWAVE AMPLIFIERS
• NICKEL
• OSCILLATORS
• TABLES(DATA)
• THERMAL CONDUCTIVITY
• WAVEGUIDES

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE