Accession Number:

AD0621136

Title:

ADVANCED FERRIMAGNETIC MATERIALS APPLIED TO DIGITAL PHASE SHIFTERS

Descriptive Note:

Semiannual rept. no. 2, 25 Dec 1964-25 Jun 1965

Corporate Author:

SPERRY MICROWAVE ELECTRONICS CLEARWATER FL

Personal Author(s):

Report Date:

1965-08-01

Pagination or Media Count:

141.0

Abstract:

A resume is presented outlining the present status of ferrite digital phase shifters including the interpretation of the influence of material characteristics on the operating dynamics of phase shifters. The importance and influence of the following material parameters are discussed saturation magnetization, remanent magnetization, linewidth, remanence ratio, squareness, coercive field, density, grain size, dielectric constant, dielectric loss tangent, anisotropy field, peak power threshold, switching coefficient, and magnetostriction. The experimental investigations have concentrated on the study of the control and variation of the above parameters and the evaluation of materials with known properties in rf structures. Magnetic losses are discussed from an analytical and experimental standpoint. Investigations on magnetic losses have been conducted at S-band, and a prelininary interpretation of the data is presented. Structural and material parameter studies have been carried out in an X-band waveguide phase shifter structure. The results of these studies are presented together with some comparison, where possible, with recent theoretical publications.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE