Meng-An Pan

A Fully Integrated MIMO Multi-Band Direct-Conversion CMOS Transceiver for WLAN Applications (802.11n)

A single-chip multi-band direct-conversion CMOS MIMO transceiver (2 times 2) targeted for WLAN applications is presented. This transceiver is capable of satisfying the requirements of the Enhanced Wireless Consortium and achieves PHY rates of >270Mb/s. The receivers and transmitters achieve an EVM of better than -41 dB (0.9%) and -40dB (1.0%) operating in legacy g and a modes, respectively. From a 1.8V supply and with both cores operating, the chip draws 275mA in RX mode and 280mA in TX mode.

A Low-Power Single-Weight-Combiner 802.11abg SoC in 0.13 µm CMOS for Embedded Applications Utilizing An Area and Power Efficient Cartesian Phase Shifter and Mixer Circuit

A low-power 802.11abg SoC which achieves the best reported sensitivity as well as lowest reported power consumption and utilizes an extensive array of auto calibrations is reported. This SoC utilizes a two-antenna array receiver to build a single weight combiner (SWC) system. A new signal-path Cartesian phase generation and combination technique is proposed that shifts the RF signal in 22.5deg phase steps. A 3 dB improvement in received SNR is achieved in comparison to the single path receiver. The radio and AFE occupy 10 mm2 of area in a digital 0.13 mum CMOS process of which 0.29 mm2 is occupied by the SWC RF receiver. The radio+AFE consume 85 mW of power in active Rx mode of which 30 mW is utilized by the SWC RF front-end.

A fully integrated SoC for 802.11b in 0.18 /spl mu/m CMOS

A fully integrated system-on-a-chip (SOC) intended for use in 802.11b applications is built in 0.18-/spl mu/m CMOS. All of the radio building blocks including the power amplifier (PA), the phase-locked loop (PLL) filter, and the antenna switch, as well as the complete baseband physical layer and the medium access control (MAC) sections, have been integrated into a single chip. The radio tuned to 2.4 GHz dissipates 165 mW in the receive mode and 360 mW in the transmit mode from a 1.8-V supply. The receiver achieves a typical noise figure of 6 dB and -88-dBm sensitivity at 11 Mb/s rate. The transmitter delivers a nominal output power of 13 dBm at the antenna. The transmitter 1-dB compression point is 18 dBm and has over 20 dB of gain range.

A 2.4 GHz CMOS transceiver for Bluetooth

A fully-integrated CMOS transceiver tuned to 2.4 GHz consumes 46 mA in receive mode and 47 mA in transmit mode from a 2.7 V supply. The receiver has -80 dBm sensitivity at 0.1% BER, and -7 dBm IIP3. The transmitter delivers a GFSK modulated spectrum at 5 dBm output power.