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
目的总结骑跨岩尖型脑膜瘤的临床显微手术技巧。方法回顾性分析35例骑跨岩尖型脑膜瘤病例资料,均采用颞下入路,肿瘤直径≥3 cm 21例,<3 cm 14例。结果肿瘤切除达到SimpsonⅠ级32例,Ⅱ级2例,Ⅲ级1例,无死亡病例。术后3个月内三叉神经...目的总结骑跨岩尖型脑膜瘤的临床显微手术技巧。方法回顾性分析35例骑跨岩尖型脑膜瘤病例资料,均采用颞下入路,肿瘤直径≥3 cm 21例,<3 cm 14例。结果肿瘤切除达到SimpsonⅠ级32例,Ⅱ级2例,Ⅲ级1例,无死亡病例。术后3个月内三叉神经障碍6例,动眼神经障碍4例,展神经障碍2例。术后随访2～8年,平均5.5年,三叉神经障碍2例,动眼神经障碍1例。结论骑跨岩尖型脑膜瘤手术复杂,对外科医生的颅底解剖知识、显微操作技术要求很高。颞下入路可良好显露肿瘤和保护神经血管,获得较佳手术疗效,是常用手术入路。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).
文摘目的总结骑跨岩尖型脑膜瘤的临床显微手术技巧。方法回顾性分析35例骑跨岩尖型脑膜瘤病例资料,均采用颞下入路,肿瘤直径≥3 cm 21例,<3 cm 14例。结果肿瘤切除达到SimpsonⅠ级32例,Ⅱ级2例,Ⅲ级1例,无死亡病例。术后3个月内三叉神经障碍6例,动眼神经障碍4例,展神经障碍2例。术后随访2～8年,平均5.5年,三叉神经障碍2例,动眼神经障碍1例。结论骑跨岩尖型脑膜瘤手术复杂,对外科医生的颅底解剖知识、显微操作技术要求很高。颞下入路可良好显露肿瘤和保护神经血管,获得较佳手术疗效,是常用手术入路。
