Wireless Ultrasonic Communication for Biomedical Injectable Implantable Device

This paper presents a design and implementation of an ultrasonic wireless communication link for an injectable biomedical implanted device. The results address how the ultrasound link encounter from the multiple paths propagation effect. The ultrasound link characterized in term of channel impulse response and power transmission losses against the depth of the implant, the achieved data transmission rate was 70 Kbps and the signal to noise ratio was (30, 35 and 47) dB at a transmission voltage of (1.8, 3.3 and 20) V peak to peak in 12 cm depth. The transmission loss increases as the depth of the implant increases. The ultrasound link represented by two piezoelectric transducers that operate in 320 KHz radial resonance frequency.