超低功耗S-OOK调制的超宽带短脉冲射频发射机芯片设计  

Ultra-low Power S-OOK Modulated Impulse Radio Ultra-Wide Band(IR-UWB)RF Transmitter Chip Design

作　　者：赵宇航[1] 李琛[1] 

机构地区：[1]上海集成电路研发中心有限公司,上海201210

出　　处：《中国集成电路》2017年第11期44-52,共9页China lntegrated Circuit

摘　　要：本文阐述了一种超低功耗S-OOK调制的超宽带短脉冲(I mpul se Radi o Ul t r a-Wi de Band,I R-UWB)射频发射机(RF Tr ans mi t t er)芯片。本发射机芯片基于一种新型的基于自同步的S-OOK调制方式,有效解决了由于同步所带来的额外电路开销。通过开关切换片内电源电压节省功耗,本I R-UWB发射机控制功耗较大的高频振荡器和输出缓冲器周期间歇性地以极短时间工作,极大地节省了发射机的功耗。通过新型的自校准偏置电路,使得本发射机产生的基带超短脉冲可以有效抵抗工艺、温度的变化。整个I R-UWB发射机芯片DC能量消耗为65p J,发射每个脉冲的能量消耗为184μW/PRF,发射机输出能量效率为10.4%,是一款超低功耗、高集成度的射频发射机芯片。This paper presents an ultra-low power S-OOK Modulated IR-UWB RF transmitter chip for wireless sensor network applications. The architecture of this chip is based on a novel Synchronizing OOK （ S-OOK ） modulation, so that to avoid extra circuits for the function of Synchronization. This RF Transmitter is ultra-low power design due to switch on/off on-chip power supply of high-frequency oscillator and output buffer. By using self-calibrated bias circuit, this RF Transmitter can tolerant the variation of process and temperature. The DC energy consumption,energy per pulse and energy efficiency of the whole IR-UWB RF Transmitter chip is 65pJ and 184uW/PRF, respectively, which means it is an ultra-low power and highly integrated RF transmitter.

关 键 词：超低功耗 无线传感器网络 超宽带短脉冲 射频发射机 

分 类 号：TN402[电子电信—微电子学与固体电子学]