Accession Number : AD0628450
Title : ACTIVE ACOUSTIC DEVICES.
Descriptive Note : Interim rept., 1 Apr-30 Jun 65,
Corporate Author : MOTOROLA INC PHOENIX ARIZ SEMICONDUCTOR PRODUCTS DIV
Personal Author(s) : Sakiotis,N. G. ; Brendecke,W. H. ; Hickernell,F. S.
Report Date : FEB 1966
Pagination or Media Count : 67
Abstract : Thin film transducer techniques have yielded conversion losses of 6 to 8 db with bandwidths of the order of 50% in the frequency range of 100 to 300 megacycles. Surface roughness and pinholes have caused major interface problems between the transducer and the drift field contacts. The dependence of RF performance upon crystal length and lateral dimensions and the dependence of crystal temperature upon cross section were investigated. The electrical and acoustic parameters which characterize a strong electroacoustic gain interaction are summarized. A correlation between the gain properties of a sample and its etch pit density was determined. (Author)
Descriptors : (*TRANSDUCERS, SEMICONDUCTOR DEVICES), (*ACOUSTIC EQUIPMENT, SEMICONDUCTOR DEVICES), (*SEMICONDUCTOR DEVICES, TRANSDUCERS), SEMICONDUCTING FILMS, PIEZOELECTRIC CRYSTALS, PHENONS
Subject Categories : Electrical and Electronic Equipment
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE