Implanted Antennas in Medical Wireless Communications
The demand to utilize radio frequency antennas inside/outside a human body has risen for biomedical applications. Most of the research on antennas for medical applications has focused on producing hyperthermia for medical treatments and monitoring various physiological parameters. Antennas used to elevate the temperature of cancer tissues are located inside or outside of the patient’s body, and the shapes of antennas used depend on their locations. For instance, waveguide or low-profile antennas are externally positioned, and monopole or dipole antennas transformed from a coaxial cable are designed for internal use [3]. In addition to medical therapy and diagnosis, telecommunications are regarded as important functions for implantable medical devices (pacemakers, defibrillators, etc.) which need to transmit diagnostic information. In contrast to the number of research accomplishments related to hyperthermia, work on antennas used to build the communication links between implanted devices and exterior instrument for biotelemetry are not widely reported.
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