Abstract：Compared with traditional load-pull measurement systems, the active hybrid load-pull measurement system can achieve a larger load impedance adjustment range for microwave power amplifier device testing, which has become a popular measurement solution.For the verification of active hybrid load-pull measurement system, the transducer gain is generally selected as the optimization verification parameter of the load traction measurement system.By comparing the deviation between the theoretical value and the measured value of the power gain and the transducer gain, it is observed that under large reflection conditions, the power gain is more sensitive for the residual error after system calibration, and the effect of optimizing and improving the system accuracy is better.Finally, it is verified by the application experiment of power optimization, it is observed that when the load reflection coefficient reaches 0.9, the transducer gain changes 0.4dB, whereas the power gain changes 0.8dB.Therefore, the effect of selecting the power gain as a large reflection optimization calibration parameter is more obvious.However, under a small reflection coefficient, the transducer gain can be selected as the verification parameter of the load traction measurement system.
［1］唐宗熙, 李恩. 微波功率固态放大器负载牵引特性的自动测试 ［J］. 计量学报, 2004, 25 (4): 362-365.
Tang Z X, Li E. Automatic Measurement of Load-pull Property of Power Solid-state Amplifiers at Microwave Frequency ［J］. Acta Metrologica Sinica, 2004, 25 (4): 362-365.
［2］唐宗熙, 李恩. 一种测量微波功率放大器件输出端反射系数的新方法 ［J］. 计量学报, 2001, 22 (2): 147-151.
Tang Z X, Li E. A New Method for Measurement of Output Reflection Coefficient of Power Amplifier at Microwave Frequencies ［J］. Acta Metrologica Sinica, 2001, 22 (2): 147-151.
［3］郑易平. 负载牵引测量技术 ［J］. 电子测量技术, 2009, 32 (9): 151-155.
Zheng Y P. Load pull measurement technique ［J］. Electronic Measurement Technology, 2009, 32 (9): 151-155.
［4］周春阳. 微波大功率负载牵引测试系统中的Ka波导调配器设计与测试方法研究 ［D］. 西安:西安电子科技大学, 2014.
［5］任建存, 李香宇, 李廷军, 等. 大功率射频功放中阻抗匹配技术的研究 ［J］. 仪表技术, 2017, (6): 25-28.
Ren J C, Li X Y, Li T J, et al. Research on Impedance Matching Technology in RF Power Amplifier with High Power ［J］. Instrumentation Technology, 2017, (6): 25-28.
［6］邢靖, 孙卫忠. 基于负载牵引测试系统的功率管参数提取 ［J］. 微波学报, 2009, 25 (3): 56-59.
Xing J, Sun W Z. Parameters Extraction of Power Tran-sistor Based on Load-Pull Measurement System ［J］. Journal of Microwaves, 2009, 25 (3): 56-59.
［7］汪珍胜, 郑惟彬, 王维波, 等. 负载牵引测试系统的误差源分析 ［J］. 固体电子学研究与进展, 2015, 35 (6): 560-564.
Wang Z S, Zheng W B, Wang W B, et al. Analysis of Error Source in Load Pull Measurement System ［J］. Research & Progress of Solid State Electronics, 2015, 35 (6): 560-564.
［8］Ferrero A, Teppati V, Carullo A. Accuracy evaluation of on-wafer load-pull measurements ［J］. IEEE Transactions on Microwave Theory & Techniques, 2001, 49 (1): 39-43.
［9］Sevic J. Basic Verification of Power Loadpull Systems［EB/OL］. Maury Microwave Corporation, 2004.
［10］Focus Microwaves Corporation. Accuracy and Verification of Load-Pull Measurements ［Z］. Application note 18. 1994.
［11］Ferrero A, Teppati V, Carullo A. Accuracy evaluation of on-wafer load-pull measurements ［J］. IEEE Transactions on Microwave Theory and Techniques, 2001, 49 (1): 39-43.
［12］Tsironis C. Active and hybrid harmonic load pull syste-ms: An overview and comparison［C］//Integrated Nonlinear Microwave & Millimetre-wave Circuits. IEEE, 2012.
［13］Gustafsson S, Thorsell M, Fager C. A novel active load-pull system with multi-band capabilities［C］//Microwave Measurement Conference. IEEE, 2013.
［14］Muller J E, Gyselinckx B. Comparison of active versus passive on-wafer load-pull characterisation of microwave and mm-wave power devices［C］//International Microwave Symposium Digest. IEEE, 1994.
［15］M/A-COM Inc. Microwave Power Transistor Impedance Measurement［R］. USA, Application Note 001, 1998.
［16］Focus Microwave Inc. Basics on Load Pull and Noise Measurements［R］. Canada, Application Note 8, 1994.
［17］张杰, 宋振飞, 李君, 等. 基于里德堡原子的微波功率精密测量 ［J］. 计量学报, 2019, 40 (5): 749-754.
Zhang J, Song Z F, Li J, et al. Precision Measurement of Microwave Power Using Rydberg Atoms ［J］. Acta Metrologica Sinica, 2019, 40 (5): 749-754.
［18］钟青, 袁文泽, 史艳平, 等. 毫米波功率计量标准器芯片的研制 ［J］. 计量学报, 2019, 40 (2): 329-332.
Zhong Q, Yuan W Z, Shi Y P, et al. Study on Millimeter Wave Power Standard Devices ［J］. Acta Metrologica Sinica, 2019, 40 (2): 329-332.
［19］栾鹏, 王一帮, 杜静, 等. 提高大反射负载牵引测量准确度方法研究 ［J］. 中国测试, 2020, 46 (6): 147-151.
Luan P, Wang Y B, Du J, et al. Research on measuring methods for improving accuracy of large reflective load-pull system ［J］. China Measurement &Test, 2020, 46 (6): 147-151.
2021, Vol. 42 
