PIEZOELECTRIC RADIATOR OF PLANE ULTRASONIC WAVE Russian patent published in 2010 - IPC H01L41/83 

FIELD: electricity.

SUBSTANCE: radiator of plane ultrasonic wave represents coaxial construction containing the set of piezoelements in the form of plane rings, which is enveloped on two sides with parts made in the form of bushes. In holes of piezoelements and bushes, along the construction axis there arranged is resonant waveguide acoustic transformer. This transformer serves as tie bar as well. At that, projection of connection of tie bar and the second bush to radiator axis includes the point belonging to the plane of equal amplitudes of coupled vibrations of itself and the construction tied with it if it can be assumed solid and when there is no that connection. Radiator can include several sets of piezoelements alternating with bushes and tied with common tie bar, which increases mechanical radiation power proportionally to the number of those sets.

EFFECT: increasing efficiency owing to decreasing energy losses in mechanical connections of its vibrating system.

1 tbl, 4 dwg