WIDEBAND ELECTRONICALLY VARIABLE TIME DELAY TECHNIQUES FOR PHASED ARRAYS.
PHILCO BLUE BELL PA AERONUTRONIC DIV
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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
- Electrical and Electronic Equipment