For time-of-flight(TOF)light detection and ranging(LiDAR),a three-channel high-performance transimpedance amplifier(TIA)with high immunity to input load capacitance is presented.A regulated cascade(RGC)as the input st...For time-of-flight(TOF)light detection and ranging(LiDAR),a three-channel high-performance transimpedance amplifier(TIA)with high immunity to input load capacitance is presented.A regulated cascade(RGC)as the input stage is at the core of the complementary metal oxide semiconductor(CMOS)circuit chip,giving it more immunity to input photodiode detectors.A simple smart output interface acting as a feedback structure,which is rarely found in other designs,reduces the chip size and power consumption simultaneously.The circuit is designed using a 0.5μm CMOS process technology to achieve low cost.The device delivers a 33.87 dB?transimpedance gain at 350 MHz.With a higher input load capacitance,it shows a-3 dB bandwidth of 461 MHz,indicating a better detector tolerance at the front end of the system.Under a 3.3 V supply voltage,the device consumes 5.2 mW,and the total chip area with three channels is 402.8×597.0μm2(including the test pads).展开更多
2017年上海长征医院史建刚教授团队首次报道颈椎前路椎体-后纵韧带骨化物复合体可控前移融合术(ante-rior controllable antedisplacement and fusion,ACAF)治疗严重颈椎后纵韧带骨化症(ossification of posterior longitu-dinal ligame...2017年上海长征医院史建刚教授团队首次报道颈椎前路椎体-后纵韧带骨化物复合体可控前移融合术(ante-rior controllable antedisplacement and fusion,ACAF)治疗严重颈椎后纵韧带骨化症(ossification of posterior longitu-dinal ligament,OPLL)[1],其可在不切除骨化物的前提下实现脊髓原位减压,已被证明是一种安全有效的治疗严重颈椎OPLL的新型前路减压术式[2-5].然而,目前尚无系统地针对ACAF手术制定的器械,如钛板、螺钉及提拉工具等,尤其是对于提拉工具,仍需要进一步的改进[6].我们团队在早期开展ACAF的过程中,发现使用高速磨钻或超声骨刀开槽后游离椎体-后纵韧带骨化物复合体(vertebrae-OPLL complex,VOC)不彻底,导致不能顺利地完成前移提拉,而在进一步开槽游离椎体的过程中又会增加对神经的干扰,从而导致术后神经根损伤的症状.基于此,我们开发了带线锚钉辅助提拉VOC的方法,在临床应用中取得满意疗效,现对其总结报道.展开更多
文摘For time-of-flight(TOF)light detection and ranging(LiDAR),a three-channel high-performance transimpedance amplifier(TIA)with high immunity to input load capacitance is presented.A regulated cascade(RGC)as the input stage is at the core of the complementary metal oxide semiconductor(CMOS)circuit chip,giving it more immunity to input photodiode detectors.A simple smart output interface acting as a feedback structure,which is rarely found in other designs,reduces the chip size and power consumption simultaneously.The circuit is designed using a 0.5μm CMOS process technology to achieve low cost.The device delivers a 33.87 dB?transimpedance gain at 350 MHz.With a higher input load capacitance,it shows a-3 dB bandwidth of 461 MHz,indicating a better detector tolerance at the front end of the system.Under a 3.3 V supply voltage,the device consumes 5.2 mW,and the total chip area with three channels is 402.8×597.0μm2(including the test pads).
文摘2017年上海长征医院史建刚教授团队首次报道颈椎前路椎体-后纵韧带骨化物复合体可控前移融合术(ante-rior controllable antedisplacement and fusion,ACAF)治疗严重颈椎后纵韧带骨化症(ossification of posterior longitu-dinal ligament,OPLL)[1],其可在不切除骨化物的前提下实现脊髓原位减压,已被证明是一种安全有效的治疗严重颈椎OPLL的新型前路减压术式[2-5].然而,目前尚无系统地针对ACAF手术制定的器械,如钛板、螺钉及提拉工具等,尤其是对于提拉工具,仍需要进一步的改进[6].我们团队在早期开展ACAF的过程中,发现使用高速磨钻或超声骨刀开槽后游离椎体-后纵韧带骨化物复合体(vertebrae-OPLL complex,VOC)不彻底,导致不能顺利地完成前移提拉,而在进一步开槽游离椎体的过程中又会增加对神经的干扰,从而导致术后神经根损伤的症状.基于此,我们开发了带线锚钉辅助提拉VOC的方法,在临床应用中取得满意疗效,现对其总结报道.
