Analysis and design of a fully integrated SoC for UHF RFID reader in CMOS technology

This paper presents a fully integrated single-chip UHF radio frequency identification (RFID) reader SoC for short distance handheld applications. The SoC integrates all building blocks-including an RF transceiver, a PLL frequency synthesizer, a digital baseband and a MCU-in a 0.18 ¿m CMOS process. A high-linearity RX front-end and a low-phase-noise sythesizer are designed to handle the large self-interferer. A class-E power amplifier with high power efficiency is also integrated to fulfill the function of a RFID reader. The chip has a die area of 5.1 mm*3.8 mm including pads.