Design of a Low-Power CMOS Analog Front-End Circuit for UHF Band RFID Tag Chips

This paper describes a low-power CMOS analog front-end block for UHF band RFID tag chips. It satisfies ISO/IEC 18000-6C and includes a memory block for test. For reducing power consumption, it operates with an internally generated power supply of 1V. An ASK demodulator using a current-mode schmitt trigger is proposed and designed. The proposed demodulator can more exactly demodulate than conventional demodulator with low current consumption. It is designed using a CMOS technology. Measurement results show that it can operate properly with an input as low as and consumes . The chip size is .