Accession Number : ADD010576
Title : Magnetostatic Wave Delay Line Having Improved Group Delay Linearity.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Personal Author(s) : Daniel,Michael R ; Adam,John D ; Moore,Robert A
Report Date : 23 Aug 1983
Pagination or Media Count : 7
Abstract : The linearity of group delay versus frequency in magnetostatic wave delay lines is improved by a linear variation of one of three discrete parameters in the region between the two delay line transducers. The parameter variation is applied to magnetostatic wave delay lines that have a ground plane, a magnetic garnet crystal film substrate that is plane, a magnetic garnet crystal film substrate that is spaced from the ground plane has transmitting and receiving transducers engaged to it, and a magnetic bias field. The discrete parameters varied are the magnetic bias field; the distance of the substrate. Appropriate linear variations of any one of the these parameters provides improved linearity of grouped delay versus frequency.
Descriptors : *Patents, *Delay lines, *Magnetostatics, *Yttrium iron garnet, Frequency response, Magnetic fields, Linear systems, Magnetoacoustics, Surface waves, Signal processing, X band, Radar signals, Low loss, L band, Insertion loss, Substrates, S band, Bias
Subject Categories : Line, Surface and Bulk Acoustic Wave Devices
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE