Investigation into the Future of RFID in Biomedical Applications

This paper focuses on the future of Radio Frequency Identification (RFID) systems in biomedical applications. It discusses current technology, restrictions and applications and also illustrates possible future development. We mainly focus on actuator devices and introduce some of the concepts for RFID sensors. Basically, Radio Frequency Identification is a technology that is analogous to the working principle of magnetic bar code systems. Our proposed solution is to exploit an exciting new development in making circuits on polymers without the need of battery power. This solution exploits the principle of a Surface Acoustic Wave (SAW) device on a polymer substrate. The SAW device is a set of interdigitated conducting fingers on the polymer substrate. If an appropriate RF signal is sent to the device, the fingers act as microantennas that pick up the signal, and this energy is then converted into acoustic waves that travel across the surface of the polymer substrate. Being a flexible polymer, the acoustic waves cause stress that can either contract or stretch the material. In our case we want to use RFID technology for biomedical applications. We want to use this technology for devices, which are implanted in the human body and controlled or observed by a radio frequency signal