It has been found that CMUT with circular geometry provides optimum performance but has the disadvantage of area wastage in array construction due to voids in between the devices. Objective The CMUTs can be constructed in various possible geometries like square, rectangular, circular, and hexagonal. in contrast to piezoelectric transducers. Utilizing the semiconductor technology, the CMUTs can provide improved bandwidth, high transduction efficiency, ease of batch production etc. Background For ultrasonic signal generation and detection, the Capacitive Micromachined Ultrasonic Transducers (CMUTs), constructed using semiconductor fabrication processes are basically Microelectromechanical Systems based structures.
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