Dipole transducer array for bulk acoustic wave delay device
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United States of America Patent
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-
Feb 4, 1992
Grant Date -
N/A
app pub date -
Dec 22, 1989
filing date -
Dec 22, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An acoustic delay line device for microwave equipment includes a cylindrical acoustic substrate. A transducer array including four transducers located at the corners of a square is formed on each end of the cylinder. The four transducers are electrically connected in series top-to-top and bottom-to-bottom so that adjacent transducers are of opposite polarity and dipoles are formed diagonally. The first and last transducer in the series are connected electrically to the outside source of receiver of RF signals by bonding pads which are offset from the transducers, and by connection wires bonded to the bonding pads. A ground plane area is provided on both ends of the acoustic substrate surrounding each transducer array.
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