Pietro Giannelli,Andrea Bulletti,Maurizio Granato,Giovanni Frattini,Giacomo Calabrese,Lorenzo Capineri
出处
期刊:IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control [Institute of Electrical and Electronics Engineers] 日期:2019-06-26卷期号:66 (10): 1616-1624被引量:10
This paper presents the design, characterization, and testing of an ultrasonic transducer driver capable of arbitrary waveform generation with a bandwidth of up to 1 MHz and an output range of ±96 V. The architecture is derived from bridged class-D switching amplifiers and has a five-level power stage. The proposed device was implemented with eight synchronized channels and an all-digital control circuitry to transmit guided-wave ultrasound signals using custom piezoelectric multi-element array transducers, allowing programmable mode selectivity.