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.
ZHANG Li-fei,DU Jing,WANG Yi-bang, et al. Selection and Application of Calibration Parameter Optimization for Traction Measurement System with Large Reflective Load[J]. Acta Metrologica Sinica, 2021, 42(7): 944-949.
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2021, Vol. 42 
