Accession Number : AD0478574

Title :   RECIPROCAL PHASE SHIFTERS FOR INERTIALESS SCANNING.

Descriptive Note : Quarterly progress rept. no. 2, 15 Jul-15 Oct 65,

Corporate Author : SEDCO SYSTEMS INC MELVILLE NY

Personal Author(s) : Simpson, M. ; Yenoli, D. L.

Report Date : 15 OCT 1965

Pagination or Media Count : 39

Abstract : Efforts were continued on a program to develop waveguide reciprocal latching ferrite phase shifters for the X-band and C-band frequency ranges. The phase shifters are to operate in a digital manner and will contain four bits, namely 180, 90, 45 and 22.5 degrees. Another objective of this program is the design of a highly efficient and stable electronic driver circuit. This circuit is to provide switching of all four bits with an overall efficiency of at least 70%. The phase shifters are to be capable of use in phased array antenna systems. Experimental data of reciprocal phase shift, transmission loss, and impedance match produced by a single bit dielectric loaded double window ferrite toroid situated in the H-plane of ridge and rectangular waveguides at X-band frequencies are presented. Reciprocal phase shift of approximately 90 degrees per inch with transmission loss of about 1.0 db and a variation of phase shift of + or - 15 degrees over the frequency range of 9.0 to 9.7 Gc, has been obtained from the ridge waveguide phase shifter configuration. Experimental data of somewhat lower quality has been produced by the rectangular waveguide phase shifter configuration. (Author)

Descriptors :   (*PHASE SHIFT CIRCUITS, FERRITES), X BAND, C BAND, DIGITAL SYSTEMS, SWITCHING CIRCUITS, PHASED ARRAYS, WAVEGUIDES, COILS, ATTENUATION, DIELECTRICS, RESONANT FREQUENCY, THERMAL STABILITY, STANDING WAVE RATIOS, PHASE SHIFT CIRCUITS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE