A Fully Integrated 2.4-GHz IEEE 802.15.4-Compliant Transceiver for ZigBee™ Applications

A single-chip 2.4-GHz CMOS radio transceiver with integrated baseband processing according to the IEEE 802.15.4 standard is presented. The transceiver consumes 14.7 mA in receive mode and 15.7 mA in transmit mode. The receiver uses a low-IF topology for high sensitivity and low power consumption, and achieves -101 dBm sensitivity for 1% packet error rate. The transmitter topology is based on a PLL direct-modulation scheme. Optimizations of architecture and circuit design level in order to reduce the transceiver power consumption are described. Special attention is paid to the RF front-end design which consumes 2.4mA in receive mode and features bidirectional RF pins. The 5.77 mm2 chip is implemented in a standard 0.18-mum CMOS technology. The transmitter delivers +3 dBm into the 100-Omega differential antenna port

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