Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1987-06-30
1989-05-02
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Electromechanical filter
333133, 333142, H03H 954, H03H 913, H03H 1134
Patent
active
048272299
ABSTRACT:
A bulk acoustic wave spectrum analyzer and channelizer, using bulk acoustic wave beams in a body of material having the property of conducting bulk acoustic wave beams, including acoustically reflecting surfaces. An input transducer is positioned upon one surface of the body for launching acoustic beams into the body. At least one output transducer set, including a plurality of aligned, juxtaposed electrodes are placed on the outer surfaces of each of the output transducers of the transducer sets. A frequency responsive means for steering acoustic beams launched from said input transducer into said body, in response to the frequencies of received radio frequency signals, focuses the beams onto frequency dependent positions and transducers of the output transducer set to produce usable electrical output signals upon no more than two adjacent electrodes on each of the output transducer sets for each frequency of received signals, such particular energized electrodes being measures of the frequency slots that include the frequencies of input radio frequency signals received by the input transducer.
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Chang I-Cheng
Sabet-Peyman Farhang
Brown Roy L.
Litton Systems Inc.
Nussbaum Marvin L.
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