Multilayer piezoelectric ultrasonic transducer for medical diagnostics - uses cascaded discs for bandwidth enlargement and optional barker code generation, forming rectangular pulse train

• Main Authors: SUNG,KOENGMO, KUTTRUFF,HEINRICH,-DR
• Format: Patent
• Language: English; German
• Published: 17.09.1981
• Subjects: FOR PERFORMING MECHANICAL WORK IN GENERAL; GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL; METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY; PERFORMING OPERATIONS; TRANSPORTING

Whereas bandwidth can be increased by making the piezo-electric disc thin, this reduces the power output. A method for maintaining power while increasing bandwidth is to stack a number of discs of equal width with some elastic bonding medium between them, and to polarise alternate discs, or only som...