A small-signal equivalent circuit model and the ted. The equivalent lumped circuit, which takes the main extraction techniques for photodetector chips are presen- factors that limit a photodetector＇s RF performance i...A small-signal equivalent circuit model and the ted. The equivalent lumped circuit, which takes the main extraction techniques for photodetector chips are presen- factors that limit a photodetector＇s RF performance into consideration,is first determined based on the device＇s physical structure. The photodetector＇s S parameters are then on-wafer measured, and the measured raw data are processed with further calibration. A genetic algorithm is used to fit the measured data, thereby allowing us to calculate each parameter value of the model. Experimental resuits show that the modeled parameters are well matched to the measurements in a frequency range from 130MHz to 20GHz, and the proposed method is proved feasible. This model can give an exact description of the photodetector chip＇s high frequency performance,which enables an effective circuit-level prediction for photodetector and optoelectronic integrated circuits.展开更多
通过经典传输线理论及部分元等效电路(partial element equivalent circuit,PEEC)方法,对高频继电器常闭型信号传输路径的分布电容、电感、电阻等参数进行提取,建立信号传输路径的等效电路模型。对其进行仿真分析得到继电器射频(radio f...通过经典传输线理论及部分元等效电路(partial element equivalent circuit,PEEC)方法,对高频继电器常闭型信号传输路径的分布电容、电感、电阻等参数进行提取,建立信号传输路径的等效电路模型。对其进行仿真分析得到继电器射频(radio frequency,RF)性能曲线,并讨论了影响继电器插入损耗、电压驻波比及隔离度的主要因素。高频继电器RF性能的实验测试结果与等效电路模型仿真结果符合较好,表明了所建立等效电路模型的正确性。展开更多
文摘A small-signal equivalent circuit model and the ted. The equivalent lumped circuit, which takes the main extraction techniques for photodetector chips are presen- factors that limit a photodetector＇s RF performance into consideration,is first determined based on the device＇s physical structure. The photodetector＇s S parameters are then on-wafer measured, and the measured raw data are processed with further calibration. A genetic algorithm is used to fit the measured data, thereby allowing us to calculate each parameter value of the model. Experimental resuits show that the modeled parameters are well matched to the measurements in a frequency range from 130MHz to 20GHz, and the proposed method is proved feasible. This model can give an exact description of the photodetector chip＇s high frequency performance,which enables an effective circuit-level prediction for photodetector and optoelectronic integrated circuits.
文摘通过经典传输线理论及部分元等效电路(partial element equivalent circuit,PEEC)方法,对高频继电器常闭型信号传输路径的分布电容、电感、电阻等参数进行提取,建立信号传输路径的等效电路模型。对其进行仿真分析得到继电器射频(radio frequency,RF)性能曲线,并讨论了影响继电器插入损耗、电压驻波比及隔离度的主要因素。高频继电器RF性能的实验测试结果与等效电路模型仿真结果符合较好,表明了所建立等效电路模型的正确性。
