Accession Number : AD0774281
Title : Burst Processor Tapped Delay Line.
Descriptive Note : Interim rept. no. 2, 1 Nov 72-1 Oct 73,
Corporate Author : HUGHES AIRCRAFT CO FULLERTON CALIF GROUND SYSTEMS GROUP
Personal Author(s) : Gerard,H. M. ; Bristol,T. W. ; Ross,E. H. ; Smith,W. R.
Report Date : JAN 1974
Pagination or Media Count : 83
Abstract : ICS, Design, Acoustic surface wavesThe object of the program is to develop and demonstrate a doppler resolution filter configured as a tapped delay line. The device will operate at a center frequency of 220 MHz and a 50 MHz 1 dB bandwidth. The Burst Processor Tapped Delay Line geometry will use a parallel channel approach such that each delay output is derived from a separate acoustic channel. The device employs double electrodes for both input and tapping (output) transducers; the input consists of a simple, periodic transducer with six (6) double electrodes, while the outputs use novel 'phase-reversal transducers' with eleven (11) electrodes. The BPTDL also uses a 300 MHz reference channel which directly measures the time delay and controls the insertion phase by means of a temperature control system. The delay line design has been thoroughly analyzed and experimentally tested. Fabrication and evaluation of two prototype devices has been completed. (Modified author abstract)
Descriptors : *Acoustic delay lines, *Transducers, Acoustic waves, Surface waves, Signal processing, Temperature control, Fabrication, Performance(Engineering)
Subject Categories : Line, Surface and Bulk Acoustic Wave Devices
Distribution Statement : APPROVED FOR PUBLIC RELEASE