Measuring and testing – Vibration – By mechanical waves
Patent
1985-06-06
1987-01-13
Kreitman, Stephen A.
Measuring and testing
Vibration
By mechanical waves
310336, 128660, 73625, G01N 2900
Patent
active
046354840
ABSTRACT:
An ultrasonic transducer system is disclosed consisting of a support body (2), a radiating layer (8,9), a first .lambda./4 matching layer (10,11) and a second .lambda./4 matching layer (12,13). According to the invention, at least two ultrasonic transducers (4,6) with different and predetermined mid-frequencies are attached to a common support body (2) and have natural foci which overlap if the ultrasonic transducers (4,6) are mechanically separated. The ultrasonic transducer (4), having the higher mid-frequency, is provided with a larger radiating surface (4). This configuration, through the appropriate selection of the mid-frequencies, allows compensation for the frequency dependent damping of the transmission medium by frequency related weighting during radiation. In this manner, substantial improvements with respect to bandwidth of the total transmission path, from transmitting transducer through transmission media to receiving transducer, and the image quality can be realized.
REFERENCES:
patent: 3457543 (1969-07-01), Akervold et al.
patent: 3924454 (1975-12-01), McElroy et al.
patent: 4011750 (1977-03-01), Robinson
patent: 4366406 (1982-12-01), Smith et al.
patent: 4398421 (1983-08-01), White
patent: 4446395 (1984-05-01), Hadjicostis
patent: 4459853 (1984-07-01), Miwa et al.
patent: 4537074 (1985-08-01), Dietz
patent: 4569231 (1986-02-01), Carnes et al.
"Design Procedure for Producing Desired Beamwidths", by S. Means, Navy Technical Disclosure Bulletin, vol. 2, No. 8, Aug. 1977, pp. 47 to 51.
"Experimentelle Untersuchungen zum Aufbau von Ultraschallbreitbandwandlern", by Richter et al., Biomedizinische Technik, vol. 27, 1982.
Jackson Thomas H.
Kreitman Stephen A.
Siemens Aktiengesellschaft
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