Wave transmission lines and networks – Coupling networks – Delay lines including elastic bulk wave propagation means
Patent
1979-05-08
1980-12-30
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Delay lines including elastic bulk wave propagation means
333143, 333151, H03H 930, H01L 4110
Patent
active
042426537
ABSTRACT:
Electroacoustic apparatus is described incorporating a substrate having a plurality of transducers on an upper surface and a plurality of transducers on a lower surface each positioned for receiving bulk acoustic waves from a respective transducer on the upper surface wherein each receiving transducer has a predetermined acoustical path length from its respective transducer on the upper surface, means for coupling an input signal to the transducers on the upper surface, and means for coupling an output signal from the transducers on the lower surface. The invention further provides a plurality of bulk mode acoustic delay lines having predetermined acoustical path lengths which are coupled in parallel to suppress the triple transit signal.
The invention overcomes the problem of spurious triple transit signals in bulk mode acoustic delay lines for input signals having a wide bandwith, such as an octave.
REFERENCES:
patent: 3810257 (1974-05-01), Jones et al.
patent: 4099147 (1978-07-01), McAvoy
Lewis, "Triple Transit Suppression in Surface-Acoustic-Wave Devices", in Electronics Letters, Nov. 16, 1972, vol. 8, No. 23, pp. 553-554.
Sperry et al., "Wideband Microwave Acoustic Delay Line with Exceptionally Smooth Phase and Loss Response", Digest of the International Microwave Theory and Technique Symposium Sponsored by the IEEE, May 17, 1971, pp. 62-63.
Nussbaum Marvin L.
Trepp R. M.
Westinghouse Electric Corp.
LandOfFree
Triple transit suppression for bulk acoustic delay lines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Triple transit suppression for bulk acoustic delay lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Triple transit suppression for bulk acoustic delay lines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-9745