Accession Number : AD0272534

Title :   A FERRITE UHF PHASE-SHIFTER

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : NIFANT'YEVA,F.P.

Report Date : 01 FEB 1962

Pagination or Media Count : 1

Abstract : A description is giv n of a uhf phase-shifter which varies the phase of an ou put signal from 0 to 360 degrees by varying the longitudinal magnetic field applied to the ferrite from 0 to 250 oersteds. The phase-shifter is of simple design and has comparatively small dimensions. It consists of a coaxial spiral line with the ferrite inside it. The input and output of the line are made in the form of a 75-ohm coaxial cable plug. Inside the spiral line are two ferritic cores. A two-layer winding of PEL-1 25 wire in a water jacket is wound on the outer cylinder of the coaxial spiral line for the purpose of creating a magnetic field. The line attenuation and the phase shift w re measured at a fr uency of 150 Mc. The characteristics of the phase- ifter are such that w en the gnetic field varies from 0 to 250 oersteds, the phase shift of the signal amounts to 360 degrees, and the attenuation decreases from 12 to 3.2 db. (Author)

Descriptors :   *COAXIAL CABLES, *MAGNETIC CORES, *MICROWAVE EQUIPMENT, *PHASE SHIFT CIRCUITS, ATTENUATION, DIELECTRICS, FERRITES, HELIXES, MAGNETIC FIELDS, MEASUREMENT, RADIO RECEIVERS, RADIO SIGNALS, RADIO TRANSMITTERS, TRANSMISSION LINES, ULTRAHIGH FREQUENCY

Distribution Statement : APPROVED FOR PUBLIC RELEASE