An equivalent circuit for a novel RF integrated inductor with ferrite thin-film is derived. The enhancement of the magnetic ferrite thin-film on the inductance （L） and quality factor （Q） of the inductor is analyze...An equivalent circuit for a novel RF integrated inductor with ferrite thin-film is derived. The enhancement of the magnetic ferrite thin-film on the inductance （L） and quality factor （Q） of the inductor is analyzed. Circuit element parameters are extracted from RF measurements. Compared with the reference air-core inductor without magnetic film, L and Q of the ferrite thin-film inductor are 17% and 40% higher at 2GHz,respectively. Both the equivalent circuit analysis and test results demonstrate significant enhancement of the performance of RF integration inductors by ferrite thin-film integration.展开更多
The feasibility of using the SOI-MOSFET as a quasi-diode to replace the Schottky-barrier diode in the Schenkel circuit is examined by device simulations primarily and experiments partly. Practical expressions of boost...The feasibility of using the SOI-MOSFET as a quasi-diode to replace the Schottky-barrier diode in the Schenkel circuit is examined by device simulations primarily and experiments partly. Practical expressions of boost-up efficiency for d. c. condition and a. c. condition are proposed and are examined by simulations. It is shown that the SOI-MOSFET-based quasi-diode is a promising device for the Schenkel circuit because high boost-up efficiency can be gained easily. An a. c. analysis indicates that the fully-depleted condition should hold to suppress the floating-body effect for GHz-level RF applications of a quasi-diode.展开更多
常规的集成电路产品信息溯源系统使用去中心化分布式网络认证溯源节点,易受复杂的节点业务逻辑影响,导致信息溯源系统运行异常。针对上述问题,基于射频识别技术(Radio Frequency Identification,RFID)设计了一个全新的集成电路产品信息...常规的集成电路产品信息溯源系统使用去中心化分布式网络认证溯源节点,易受复杂的节点业务逻辑影响,导致信息溯源系统运行异常。针对上述问题,基于射频识别技术(Radio Frequency Identification,RFID)设计了一个全新的集成电路产品信息溯源系统。系统硬件部分设计了远距离无线电(Long Range Radio,LoRa)通信接口及RFID读写器。系统软件部分结合溯源关系,设置了信息溯源共识机制,构建了溯源智能合约。系统测试结果表明,设计的集成电路产品信息溯源系统性能良好,可靠性较高,符合集成电路产品的信息溯源需求,具有一定的应用价值,为后续集成电路智能化加工作出了一定的贡献。展开更多
该文首次报道了一种极简构架的5G毫米波反向阵设计原理及其CMOS芯片实现技术。该毫米波反向阵极简构架,利用次谐波混频器提供相位共轭和阵列反向功能,无需移相电路及波束控制系统,便可实现波束自动回溯移动通信功能。该文采用国产0.18μ...该文首次报道了一种极简构架的5G毫米波反向阵设计原理及其CMOS芯片实现技术。该毫米波反向阵极简构架,利用次谐波混频器提供相位共轭和阵列反向功能,无需移相电路及波束控制系统,便可实现波束自动回溯移动通信功能。该文采用国产0.18μm CMOS工艺研制了5G毫米波反向阵芯片,包括发射前端、接收前端及跟踪锁相环等核心模块,其中发射及接收前端芯片采用次谐波混频及跨导增强等技术,分别实现了19.5 d B和18.7 d B的实测转换增益。所实现的跟踪锁相环芯片具备双模工作优势,可根据不同参考信号支持幅度调制及相位调制,实测输出信号相噪优于–125 dBc/Hz@100 kHz。该文给出的测试结果验证了所提5G毫米波反向阵通信架构及其CMOS芯片实现的可行性,从而为5G/6G毫米波通信探索了一种架构极简、成本极低、拓展性强的新方案。展开更多
随着1 000 MW机组大量接入500 k V电网,以及负荷中心220 k V电网分区后供电能力日益紧张,600 MW级机组接入220 k V电网的案例逐渐增多。结合湖北电网的实例,通过仿真计算研究了600 MW级机组接入220 k V电网可能带来的问题和应对措施,并...随着1 000 MW机组大量接入500 k V电网,以及负荷中心220 k V电网分区后供电能力日益紧张,600 MW级机组接入220 k V电网的案例逐渐增多。结合湖北电网的实例,通过仿真计算研究了600 MW级机组接入220 k V电网可能带来的问题和应对措施,并提出了应遵循的原则,相关结论和建议具有较强的实际借鉴和参考价值。展开更多
文摘An equivalent circuit for a novel RF integrated inductor with ferrite thin-film is derived. The enhancement of the magnetic ferrite thin-film on the inductance （L） and quality factor （Q） of the inductor is analyzed. Circuit element parameters are extracted from RF measurements. Compared with the reference air-core inductor without magnetic film, L and Q of the ferrite thin-film inductor are 17% and 40% higher at 2GHz,respectively. Both the equivalent circuit analysis and test results demonstrate significant enhancement of the performance of RF integration inductors by ferrite thin-film integration.
文摘The feasibility of using the SOI-MOSFET as a quasi-diode to replace the Schottky-barrier diode in the Schenkel circuit is examined by device simulations primarily and experiments partly. Practical expressions of boost-up efficiency for d. c. condition and a. c. condition are proposed and are examined by simulations. It is shown that the SOI-MOSFET-based quasi-diode is a promising device for the Schenkel circuit because high boost-up efficiency can be gained easily. An a. c. analysis indicates that the fully-depleted condition should hold to suppress the floating-body effect for GHz-level RF applications of a quasi-diode.
文摘常规的集成电路产品信息溯源系统使用去中心化分布式网络认证溯源节点,易受复杂的节点业务逻辑影响,导致信息溯源系统运行异常。针对上述问题,基于射频识别技术(Radio Frequency Identification,RFID)设计了一个全新的集成电路产品信息溯源系统。系统硬件部分设计了远距离无线电(Long Range Radio,LoRa)通信接口及RFID读写器。系统软件部分结合溯源关系,设置了信息溯源共识机制,构建了溯源智能合约。系统测试结果表明,设计的集成电路产品信息溯源系统性能良好,可靠性较高,符合集成电路产品的信息溯源需求,具有一定的应用价值,为后续集成电路智能化加工作出了一定的贡献。
文摘该文首次报道了一种极简构架的5G毫米波反向阵设计原理及其CMOS芯片实现技术。该毫米波反向阵极简构架,利用次谐波混频器提供相位共轭和阵列反向功能,无需移相电路及波束控制系统,便可实现波束自动回溯移动通信功能。该文采用国产0.18μm CMOS工艺研制了5G毫米波反向阵芯片,包括发射前端、接收前端及跟踪锁相环等核心模块,其中发射及接收前端芯片采用次谐波混频及跨导增强等技术,分别实现了19.5 d B和18.7 d B的实测转换增益。所实现的跟踪锁相环芯片具备双模工作优势,可根据不同参考信号支持幅度调制及相位调制,实测输出信号相噪优于–125 dBc/Hz@100 kHz。该文给出的测试结果验证了所提5G毫米波反向阵通信架构及其CMOS芯片实现的可行性,从而为5G/6G毫米波通信探索了一种架构极简、成本极低、拓展性强的新方案。
文摘随着1 000 MW机组大量接入500 k V电网,以及负荷中心220 k V电网分区后供电能力日益紧张,600 MW级机组接入220 k V电网的案例逐渐增多。结合湖北电网的实例,通过仿真计算研究了600 MW级机组接入220 k V电网可能带来的问题和应对措施,并提出了应遵循的原则,相关结论和建议具有较强的实际借鉴和参考价值。
