By Mir Hojjat Seyedi, Daniel Lai
This monograph explores Intrabody conversation (IBC) as a singular non-RF instant info conversation approach utilizing the human physique itself because the verbal exchange channel or transmission medium. specifically, the publication investigates Intrabody verbal exchange contemplating limb joint results in the transmission frequency diversity 0.3-200 MHz.
Based on in-vivo experiments which make certain the consequences of measurement, events, and destinations of joints at the IBC, the e-book proposes a brand new IBC circuit version explaining elbow joint results. This version not just takes the limb joint results of the physique into consideration but additionally considers the impression of dimension apparatus in greater frequency band hence predicting sign attenuation habit over wider frequency levels. ultimately, this paintings proposes transmitter and receiver architectures for intrabody conversation. A carrier-free scheme in line with impulse radio for the IBC is carried out on a FPGA.
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Additional info for A Novel Intrabody Communication Transceiver for Biomedical Applications
These studies have assessed the general and complex movements such as moving the arm up and down [11, 78]. Yet, none of these studies have addressed the IBC characteristics with respect to body limb motion details. Since limb joints control human mobility, the impact of the elbow and knee joints within the signal path as well as the effects of joint flexion and extension on signal attenuation is examined in our research. To this end, some real measurements need to be conducted to confirm the achieved results from the proposed model simulations before device fabrication begins.
The subjects were 178–182 cm in height and 65–78 kg in weight. To measure the signal attenuation the MiniVNA Pro was used (see more details in Chap. 3). 0 mA which is 20 times below the maximum allowed contact current. The maximum signal transmission power according to ICNIRP exposure guidelines  is 37 dBm (=5 W) for an average weight of 65 kg. 0 mW) for further safety. 3–200 MHz with a 50- impedance on the MiniVNA ports. Preparation protocol and setup follows that detailed in Chap. 3. In all experiments, the subject was asked to stand in a relaxed manner.
Kanai et al. in 1987  has presented the complex and simplified circuit model of human tissues seen in Fig. 7. The resistors and capacitors in the proposed model represent physiological effects including blood circulation, metabolism of tissues, and electrolytic concentration of intra- and extra-cellular fluids within the body . 16 2 Literature Review Fig. 5 Cole–Cole equation equivalent circuit model for a single time constant Fig. 6 Current flow in human body tissues  Fig. 7 Complex (left) and simplified (right) equivalent circuit model of human tissues.