负载牵引系统校准结果性能评价方法研究

doi:10.3969/j.issn.1000-1158.2022.01.16

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摘要针对采用标准失配衰减网络实现负载牵引测量系统校准时,转换增益测量误差ΔG_T作为校准结果无法直观反映系统测量输出功率(P_out)以及功率附加效率(PAE)的测量性能问题。通过在后端模块的负载端插入经校准的精密极化步进衰减器对ΔG_T进行衰减替代测量,给出了校准结果ΔG_T与P_out及PAE变化量的曲线族,方便设计师快速获取系统测量性能。其中,P_out误差随ΔG_T呈等量线性变化斜率45°;PAE误差随ΔG_T线性增加,当PAE为70%、ΔG_T为0.5dB时,对应的功率附加效率PAE的不确定度约为8.5%。经实验验证,P_out及PAE的曲线查询误差与实际测量误差的偏差小于1%,应用设计的查询曲线,可有效提高负载牵引应用工程师的设计效率。

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	栾鹏
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	胡海龙

关键词 ：计量学, 负载牵引, 校准应用, 精密极化步进衰减器, 转换增益, 功率附加效率

Abstract：A method for evaluating the Performance of the on-wafer load-pull measurement system by measuring the measurement error ΔG_T of the transducer gain of the passive mismatch attenuation network is introduced. The load-pull measurement system mainly measures the Performance of the power device under test from three aspects: output power (P_out), conversion gain (G_T) and power added efficiency (PAE). By inserting a calibrated precision polarization step attenuator into the load end of the back-end module, the attenuation substitution measurement of ΔG_T is carried out, and gives the calibration result ΔG_T and the curve family of pout and PAE variation, which is convenient for designers to quickly obtain the system measurement Performance. Among them, the P;out error varies linearly with ΔG_T (slope 45°); PAE error increases linearly with ΔG_T. When PAE is 70% and ΔG_T is 0.5dB, the corresponding power added efficiency PAE uncertainty is about 8.5%. After experimental verification, the deviation between the curve of P_out and PAE of measurement result is less than 1%.

Key words： metrology load-pull calibration application precision polarization step attenuation transducer gain power added efficiency

收稿日期: 2020-09-07 发布日期: 2022-01-06

PACS:

TB973

作者简介: 栾鹏(1978-),男,中国电子科技集团公司第十三研究所高级工程师,主要从事微波毫米波计量测试研究。Email:luanpeng@mail.cetc13.cn

引用本文:

栾鹏, 杜静, 王一帮, 刘晨, 吴爱华, 胡海龙. 负载牵引系统校准结果性能评价方法研究[J]. 计量学报, 2022, 43(1): 102-106.
LUAN Peng, DU-Jing, WANG Yi-bang, LIU Chen, WU Ai-hua, HU Hai-long. Research on Performance Evaluation Method of Calibration Results of Load-Pull System. Acta Metrologica Sinica, 2022, 43(1): 102-106.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2022.01.16 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2022/V43/I1/102

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