As IBC systems continue to evolve, there is increasing interest in measurement systems that can accurately measure the transmission characteristics of the capacitive communication channel on human tissue models - phantoms. Phantoms are used for non-invasive research methods and are often tailored for different frequency ranges. By adjusting the dielectric parameters of the phantom, conductivity and permittivity, various biological tissues can be mimicked. Although semisolid, solid, and animal tissue phantoms can mimic human tissues quite well, they are difficult to fabricate and impractical for performing measurements in capacitive IBC systems where the transmitter is placed inside the body and the receiver is placed on the skin surface. In this thesis, a liquid phantom representing muscle tissue was created and used for the characterization of the capacitive IBC system employing battery-powered transmitter and receiver. The transmission characteristics of the system were tested at seven discrete frequencies generated by the transmitter while the receiver was used to measure the power of the received signal. The effects of the moving and rotating the electrodes within the phantom on the transmission characteristics were investigated, as were the use of different configurations of ground electrodes through which the return signal path closes, and different approaches to connecting the transmitter and receiver to the phantom. The impact of different frequencies on the received signal power and the galvanic isolation of the transmission channel were investigated.