Accession Number : AD0485848

Title :   WIDEBAND ELECTRONICALLY VARIABLE TIME DELAY TECHNIQUES FOR PHASED ARRAYS.

Descriptive Note : Final rept.,

Corporate Author : PHILCO BLUE BELL PA AERONUTRONIC DIV

Personal Author(s) : Kraft, Max A. ; Middlestead, Richard W. ; Twist, G. A. ; Geller, R. H.

Report Date : MAY 1966

Pagination or Media Count : 103

Abstract : This report presents the results of a 12-month program to design, fabricate and test two identical, digitally variable, wideband, time delay units applicable to time delay steering of broadband arrays. A delay variation of 15 nanoseconds is obtained in each unit by electrically switching one of more strip transmission delay lines, into the signal path. The unique feature in the developed hardware is the use of an all-pass time delay network to provide straightforward control for triming of the incremental delay elements. This network provides a delay variation of 100 picoseconds and a 400 MHz signal bandwidth with measurement accuracy on the setting being + or - 5 picoseconds. (Author)

Descriptors :   (*PHASED ARRAYS, BROADBAND), DELAY CIRCUITS, RADIOFREQUENCY AMPLIFIERS, CIRCUITS, DELAY LINES, ALIGNMENT, STANDING WAVE RATIOS, PHASE(ELECTRONICS), TRANSMISSION LINES, TRANSISTORS, ANTENNA ARRAYS, TIME DELAY RELAYS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE