Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1989-03-22
1990-08-28
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310313C, 333153, 333193, H01L 4108
Patent
active
049528335
ABSTRACT:
A surface acoustic wave device is disclosed which performs frequency channelization in a relatively small volume. The invention utilizes a wide band incline step frequency transducer each step feeding an independent beam width compressor waveguide combination. The waveguides fan out with a wide radius of curvature to contain the wave in off pure mode axis propagation. The output of each waveguide then feeds an independent beam width expander and frequency selector interdigital transducer. The use of the waveguides as a tapping and narrow aperture transport mechanism minimizes defraction, allows the output transducers to be widely separated achieving isolation and permits a larger number of filters per substrate.
REFERENCES:
patent: 3406358 (1968-10-01), Seidel et al.
patent: 4079342 (1978-03-01), Solie
patent: 4181904 (1980-01-01), Weller et al.
patent: 4428062 (1984-01-01), Michaels
patent: 4499393 (1985-02-01), Stokes et al.
patent: 4633117 (1986-12-01), Bloch et al.
patent: 4697115 (1987-09-01), Mitsutsuka
patent: 4737743 (1988-04-01), Solie
patent: 4764701 (1988-08-01), Garbacz et al.
patent: 4799184 (1989-01-01), Grassl
Low Cost SAW Convolver with High Spurious Suppression, by P. Dufilie, 1980 Ultrasonics Symposium, Boston, MA, U.S.A., Nov. 5-7, 1980, pp. 43-47.
Denis C. Webb, AO, SAW, BAW, and MSW Technology for Frequency Sorting, 1986 IEEE Ultrasonics Symposium at pp. 113 and 114.
Schmidt et al., Thin Film Acoustic Surface Waveguides on Anisotropic Media, IEEE Transactions on Sonics and Ultrasonics, vol. SU-22, No. 2, Mar. 1975.
Budd Mark O.
Westinghouse Electric Corp.
LandOfFree
High density surface acoustic waveguide channelizer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High density surface acoustic waveguide channelizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High density surface acoustic waveguide channelizer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1591840