Bojko Marholev

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 multistandard, multiband SoC with integrated BT, FM, WLAN radios and integrated power amplifier

The growing occurrences of WLAN, BT, and FM on the same mobile device have created a demand for putting all three on the same die to save on die size, I/O count, BOM, and ultimately cost. Common blocks such as crystal oscillator, bandgap, and power management units can be easily shared. This paper presents a solution in which 802.11a/b/g WLAN, single-stream 11n (SSN) WLAN, BT, and FM subsystem and radio are integrated on a single die.

A Single-Chip Bluetooth EDR Device in 0.13μm CMOS

A low-power single-chip Bluetooth EDR device is realized using a configurable transformer-based RF front-end, a low-IF receiver and direct-conversion transmitter architecture. It is implemented in a 0.13mum CMOS process and occupies 11.8mm2. Sensitivity for 1, 2 and 3Mb/s rates is -88, -90, and -84dBm and transmitter differential EVM is 5.5% rms.

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.