Accession Number : ADP001549

Title :   Developments in Low Loss, Low Ripple SAW Filters,

Corporate Author : TRW ELECTRONIC SYSTEMS GROUP REDONDO BEACH CA

Personal Author(s) : Yen,K. H. ; Lau,K. F. ; Stokes,R. B. ; Kong,A. M. ; Kagiwada,R. S.

Report Date : 1982

Pagination or Media Count : 4

Abstract : SAW filters are often required by systems to possess low loss, low passband ripple and high out-of-band ejection properties simultaneously. This paper describes two recent developments in the design of such low loss filters. In the first approach, three bidirectional transducers are arranged colinearly to eliminate half of the 6 dB bidirectional loss. The unique feature of the this design lies in the use of centrosymmetric transducers for broadband triple transit suppression. Two design examples are reported. The filter fractional bandwidths range from 1.8% to 10.5%.

Descriptors :   *Frequency, *Control, *Symposia, *Surface acoustic waves, *Acoustic filters, Acoustic waves, Transducers, Broadband, Losses, Bandwidth, Amplitude

Distribution Statement : APPROVED FOR PUBLIC RELEASE