Accession Number : AD0856708

Title :   Thin Ferrites for Integrated Microwave Devices.

Descriptive Note : Final rept. 1 Oct 65-1 Feb 69,

Corporate Author : SYRACUSE UNIV RESEARCH CORP NY SPECIAL PROJECTS LAB

Personal Author(s) : Roome, Gerard T.

Report Date : 15 JUL 1969

Pagination or Media Count : 129

Abstract : Theoretical and experimental investigations have been conducted to determine the feasibility of microwave devices which utilize the remanent magnetization characteristics of dimensionally thin magnetic materials. A technique for producing the phase-shift (both reciprocal and non-reciprocal) was theoretically developed and proven experimentally. Phase-shifting elements composed of a meander line circuits deposited on a thin ferrite slab have been built and tested. By a modification of the meander line circuit dimensions and the direction of the ferrite magnetization relative to the circuit, both reciprocal and non-reciprocal devices can be made. Reciprocal interactions as large as 28% have been observed. Latching non-reciprocal phase-shifters with a differential phase-shift of 360 deg have been constructed with an insertion loss of 2.2 db. By the appropriate combination of the phase control elements with other passive elements other devices have been successfully formed, such as, a switchable circulator, a phase amplitude controller and an eight element phased array antenna. (Author)

Descriptors :   (*PHASE SHIFT CIRCUITS, FERRITES), MICROWAVE EQUIPMENT, PHASED ARRAYS, WAVEGUIDE CIRCULATORS, X BAND, INTEGRATED CIRCUITS, STRIP TRANSMISSION LINES, ANTENNA FEEDS, ANTENNA RADIATION PATTERNS, SUBSTRATES, ATTENUATION, FEASIBILITY STUDIES.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE