Fig. 3: Intrabody setup. | Nature Communications

Fig. 3: Intrabody setup.

From: Lithium Niobate Piezoelectric Micromachined Ultrasonic Transducers for high data-rate intrabody communication

Fig. 3

LN pMUT arrays, wire-bonded to Printed Circuit Boards (PCBs) are implanted in a tissue phantom mimicking the human tissue properties. When implanting, the incised holes are filled with ultrasound gel to avoid air gaps that could reduce the intensity of the ultrasonic signal. Furthermore, the communication link is implemented with a transmitting and a receiving Universal Software Radio Peripheral (USRP). The signal of the TX USRP is amplified by an off-the-shelf power amplifier while the RX USRP is conditioned by an in-house custom-made charge amplifier designed to match the impedance of the LN pMUT array. In this setup, both TX and RX are LN pMUT arrays.

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