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Capacitive micromachined ultrasonic transducers (CMUTs) are prone to having low transmit sensitivity. According to large signal CMUT models, this shortcoming can be overcome with higher pulse voltages and optimized bipolar pulse drives [1]. Therefore, a supply-inverted bipolar pulser and a Tx/Rx switch are proposed to drive CMUTs in medical ultrasound imaging applications. These circuits are particularly...
This paper presents theoretical analyses of three analog-to-digital-conversion-based and one analog-to-time-conversion-based AFE architectures. They are particularly focused on the significant parameters that affect the design of neural recording implants.
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