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ABSTRACT: The RF loading effects on a chest-worn heart-rate telemetry
transmitter were measured; a 6 cm<sup>2</sup> printed loop in a 418 MHz
tank circuit was used as the radiator, 1-16 year-old children were used
as test subjects. An individual power absorption of 3.4 dB was found,
based on the numerical integration of polar patterns. Body capacitance
caused tank detuning of between 0.1 and 5.2 MHz, depending on the
physical orientation of the loop
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE;
