The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 1984
Filed:
Feb. 25, 1983
Cornelis J Drost, Ithaca, NY (US);
G Jan Milanowski, Ithaca, NY (US);
Cornell Research Foundation, Inc., Ithaca, NY (US);
Abstract
Methods and apparatus for calibrating terminated ultrasonic electroacoustic transducers are disclosed. The transducers are excited by a driving signal to emit an ultrasonic acoustic wave, which wave is received either by the same transducer after reflection or by a second transducer to produce an output signal. The driving signal and output signal are supplied to measuring circuitry deriving transducer performance calibration signals, such as transducer gain, transducer sensitivity, acoustic field pressure and intensity. These performance characteristics of the transducer are measured in absolute terms under conditions of actual termination. The transducer characteristics are obtained in order to determine the acoustical performance of transducers useful in biomedical and other fields.