A unidirectional three-phase interdigital transducer for acoustic imaging in fluids
- 35 Downloads
A new type of unidirectional interdigital transducer for acoustic imaging is presented. The tranducer consists of three electrode groups deposited onto a piezoelectric ceramic plate and can be constructed by using three fingers per wavelength to be driven from a three-phase source.
All radiation, in the forward direction, from each section of the transducer constructively interferes at a focal point in water. On the other hand, the sound wave beam radiated in the other direction is small. The radiation direction is controllable by changing the carrier frequency.
Unable to display preview. Download preview PDF.