A miniaturized low-power radio frequency identification tag integrated in CMOS for biomedical applications

Biomedical implant miniaturization is one of the trends that have appeared recently for health monitoring to overcome size limitations and therefore reach restricted body areas. RFID technology can be used as a tool, due to its biocompatibility with human body and non-invasive measurement capacity, as long as it is directed to miniaturization. This work presents a low-power miniaturized near-field RFID tag operating at 1.04 GHz in a standard CMOS180nm technology inside an available area of 1.5mm × 1.5 mm. An internal ROM and corresponding reading circuit was included so as to emulate information stored in the tag. The layout-extracted simulations proved that the tag backscatters a 1MHz amplitude-modulated signal when powered at -4 dBm.