This paper investigates load-pull measurement of AlGaN/GaN high electron mobility transistors（HEMTs） at different numbers of gate fingers.Scalable small-signal models are extracted to analyze the relationship betwee...This paper investigates load-pull measurement of AlGaN/GaN high electron mobility transistors（HEMTs） at different numbers of gate fingers.Scalable small-signal models are extracted to analyze the relationship between each model＇s parameters and the number of device＇s gate fingers.The simulated S-parameters from the small-signal models are compared with the reflection coefficients measured from the load-pull measurement system at X-band frequencies of 8.8 and 10.4 GHz.The dependency between the number of device＇s gate fingers and load-pull characterization is presented.展开更多
Beginning from the origination of the bone-length cun measurement, and proceeding from clinical application, the article differentiated and analyzed 4 measuring methods relate with cun, namely, bone-length cun measure...Beginning from the origination of the bone-length cun measurement, and proceeding from clinical application, the article differentiated and analyzed 4 measuring methods relate with cun, namely, bone-length cun measurement and finger cun measurement regarding to acupoint locating, cun measurement of filiform needle concerning the size of the body of the needle and cun measurement of acupuncture technique referring to the depth of insertion. It explained different senses of cun in the above 4 measurements. The original meaning and the respective implication for each situation should be clarified. Flexible and proper application is required so as to enhance the therapeutic effect of the treatment and avoid possible accidents.展开更多
基金supported by the National Natural Science Foundation of China(No.61204086)
文摘This paper investigates load-pull measurement of AlGaN/GaN high electron mobility transistors（HEMTs） at different numbers of gate fingers.Scalable small-signal models are extracted to analyze the relationship between each model＇s parameters and the number of device＇s gate fingers.The simulated S-parameters from the small-signal models are compared with the reflection coefficients measured from the load-pull measurement system at X-band frequencies of 8.8 and 10.4 GHz.The dependency between the number of device＇s gate fingers and load-pull characterization is presented.
文摘Beginning from the origination of the bone-length cun measurement, and proceeding from clinical application, the article differentiated and analyzed 4 measuring methods relate with cun, namely, bone-length cun measurement and finger cun measurement regarding to acupoint locating, cun measurement of filiform needle concerning the size of the body of the needle and cun measurement of acupuncture technique referring to the depth of insertion. It explained different senses of cun in the above 4 measurements. The original meaning and the respective implication for each situation should be clarified. Flexible and proper application is required so as to enhance the therapeutic effect of the treatment and avoid possible accidents.
