Accession Number : AD0164291
Title : Acoustic Signal Amplifier.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Yoder,Max N.
Report Date : 02 MAR 1971
Pagination or Media Count : 5
Abstract : The patent describes a microwave ultrasonic amplifier employing a piezoelectric semiconductor element fabricated with alternate amplifying and insulating sections. The insulating sections are included to periodically attenuate undesired, higher frequency, out of band phonon signals which would otherwise build up and saturate the amplifier. The coherent signals, because of their lower frequency, are not appreciably attenuated in these sections and, consequently, their amplitude is progressively increased in each amplifying section.
Descriptors : *Audio amplifiers, *Microwave amplifiers, *Patents, Piezoelectric crystals, Semiconductors, Ultrasonic radiation
Subject Categories : Electrical and Electronic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE