A fully integrated 2.4GHz low IF CMOS transceiver for 802.15.4 ZigBee applications

A fully integrated 2.4 GHz RF transceiver compliant with the low-power ZigBee (IEEE 802.15.4) standard is presented. The RF transceiver adopts low IF receiver and direct up-conversion transmitter. It consumes 18mA in receive mode and 17mA in transmit mode with 1.8-V power supply. The receiver chain IIP3 is −13.5 dBm and BBA poly phase filter can reject the ACI/AACI interferers. The achieved transmitter’s maximum power is 4.7dBm and its EVM is 8.4% at 0.5dBm output. The LO generation is achieved using frequency mixing method and thus it can prevent the VCO pulling. The die area is 2.5 mm × 2.6 mm.