A 6-7 GHz,40 dB receiver RF front-end with 4.5 dB minimum noise figure in 0.13μm CMOS for IR-UWB app

• 作 者: 秦希 黄煜梅 洪志良
• 机 构: State Key Laboratory of ASIC and System,Fudan University,
• 出 处: Journal of Semiconductors
• 发表日期: 2013年03期
• 关键词: receiver figure tuning bandwidth wideband capacitive linearity peaking steering

A wideband receiver RP front-end for IR-UWB applications is implemented in 0.13μm CMOS technology. Thanks to the direct sub-sampling architecture,there is no mixing process.Both LNA and VGA work at RF frequencies.To optimize noise as well as linearity,a differential common-source LNA with capacitive cross- coupling is used,which only consumes current of 1.8 mA from a 1.2 V power supply.Following LNA,a two-stage current-steering VGA is adopted for gain tuning.To extend the overall bandwidth,a three-stage staggered peaking technique is used.Measurement results show that the proposed receiver front-end achieves a gain tuning range from 5 to 40 dB within 6-7 GHz,a minimum noise figure of 4.5 dB and a largest IIP_3 of-11 dBm.The core receiver (without test buffer) consumes 14 mW from a 1.2 V power supply and occupies 0.58 mm~2 area.

A wideband receiver RP front-end for IR-UWB applications is implemented in 0.13 μm CMOS technology. Thanks to the direct sub-sampling architecture, there is no mixing process. Both LNA and VGA work at RF frequencies. Speed ​​optimize noise as well as linearity, a differential common-source LNA with capacitive cross-coupling is used, which only consumes current of 1.8 mA from a 1.2 V power supply. Popular LNA, a two-stage current-steering VGA is adopted for gain tuning. To extend the Overall bandwidth, a three-stage staggered peaking technique is used. Measurement result show that the proposed receiver front-end achieves a gain tuning range from 5 to 40 dB within 6-7 GHz, a minimum noise figure of 4.5 dB and a largest IIP_3 of-11 dBm. The core receiver (without test buffer) consumes 14 mW from a 1.2 V power supply and occupies 0.58 mm ~ 2 area.