A FULLY INTEGRATED 2.4-GHz CMOS RF TRANSCEIVER FOR LOW-RATE WIRELESS SENSOR NETWORKS

This article describes a low-power and low-cost fully integrated 2.4 GHz IEEE 802.15.4 RF transceiver for low-rate wireless sensor networks. The RF transceiver adopts the single-IF direct-conversion architecture. For the high linearity, the RF receiver from end utilizes the current mirror amplifier as welt as the transconductance linearization technique. The single-IF I/Q modulation transmitter is integrated with the current-mode analog baseband circuit and lip-mixer using the current mirror amplifier. The frequency synthesizer based oil all integer-N PLL topology offering 1.92 GHz differential and 0.48 GHz quadrature LO signals is also integrated oil the RF transceiver The fully integrated transceiver is fabricated in it 0.18-mu m CMOS technology and its the size is 3.7 mm X 3.6 mm including ESD 110 pads. It achieves the -94 dBm receiver sensitivity. 8 dB receiver chain noise figure, and maximum transmitter output power of 1 dBm while drawing power consumption of 31 mW in the receive mode and 42 mW in the transmit mode with the 1.8 V supply. (C) 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1481-1487. 2009: Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24349