Lutz Dathe

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

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

A 0.18mum CMOS low-IF transceiver with integrated baseband processing according to IEEE 802.15.4 is described. The 5.77mm2 die draws 14.7mA (RX) and 15.7mA (TX) while achieving -102dBm RX sensitivity and 3dBm TX power. The differential input 2.4mA RX RF-frontend provides 5.7dB system noise figure

A 2.4GHz CMOS transceiver for 802.11b wireless LANs

A 0.25/spl mu/m CMOS zero-IF transceiver with VCO and PLL (-111dBc/Hz at 1 MHz) has been implemented. The 3.1/spl times/3.1 mm/sup 2/ IC draws 86mA (RX) and 73mA (TX) from a 2.5V supply. The receiver exhibits a 5dB noise figure and 5/spl mu/s AGC settling time. RX channel filter, TX pulse shaping filter, filter calibration circuitry, 6b ADC, bandgap reference and TX preamplifier are included and controlled by a digital interface.