Comparison of Direct Comparison Method in VNA and Power Transfer Standard Measurements

CAI Chengxin; ZHANG Yihang; YUAN Wenze; LI Yong; CUI Xiaohai

doi:10.12338/j.issn.2096-9015.2024.0141

Volume 68 Issue 8

Aug. 2024

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Article Navigation > Metrology Science and Technology > 2024 > 68(8): 38-43, 70

CAI Chengxin, ZHANG Yihang, YUAN Wenze, LI Yong, CUI Xiaohai. Comparison of Direct Comparison Method in VNA and Power Transfer Standard Measurements[J]. Metrology Science and Technology, 2024, 68(8): 38-43, 70. doi: 10.12338/j.issn.2096-9015.2024.0141

Citation:

CAI Chengxin, ZHANG Yihang, YUAN Wenze, LI Yong, CUI Xiaohai. Comparison of Direct Comparison Method in VNA and Power Transfer Standard Measurements[J]. Metrology Science and Technology, 2024, 68(8): 38-43, 70. doi: 10.12338/j.issn.2096-9015.2024.0141

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Comparison of Direct Comparison Method in VNA and Power Transfer Standard Measurements

doi: 10.12338/j.issn.2096-9015.2024.0141

1.
Henan University of Technology, Zhengzhou 450001, China
2.
National Institute of Metrology, Beijing 100029, China

Received Date: 2024-04-22
Accepted Date: 2024-05-14
Rev Recd Date: 2024-06-07

Available Online: 2024-07-15

Publish Date: 2024-08-30

Abstract

Abstract

The calibration factor is a parameter used to characterize the reading accuracy of RF power sensors, defined as the ratio of the power displayed by the sensor to the incident power. It is the object of power value transfer. This paper introduces the composition and measurement principles of the direct comparison method and the VNA-based direct comparison method. It describes the application of the equivalent source reflection coefficient in the direct calibration method. The calibration factor of the Rohde & Schwarz NRP50T power sensor was measured using both the direct calibration method and the VNA-based direct comparison method. Results show that the maximum difference between the corrected calibration factors measured by the two methods is 3.056%. The equivalent source reflection coefficient of the VNA-based direct comparison method is generally larger than that of the direct comparison method. The uncertainty evaluation method for the direct comparison method is well-established, making it currently the most prevalent RF power sensor calibration method.
- metrology,
- power sensor,
- calibration factor,
- vector network analyzer,
- direct comparison transfer,
- equivalent source reflection coefficient

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References(31)

References

[1]	冯新善. 高频、微波功率的计量测试[M]. 北京: 中国计量出版社, 1987: 123-136.
[2]	孙伟杰. WR-15(50GHz-75GHz)微波功率国家基准测量技术研究[D]. 北京: 北京交通大学, 2014.
[3]	汤世贤. 微波测量[M]. 北京: 国防工业出版社, 1991: 163-166.
[4]	刘国林, 殷贯西. 电子测量[M]. 北京: 机械工业出版社, 2003: 112-133.
[5]	孙新莉, 陈钢. RF/微波功率传感器校准方法的探讨[J]. 计量技术, 2007(6): 42-44.
[6]	李勇, 崔孝海, 赵巍. 射频与微波功率传感器校准规范: JJF 1887-2020[S]. 北京: 中国标准出版社, 2020.
[7]	Shan Y, Cui X. RF and microwave power sensor calibration by direct comparison transfer[J]. Modern metrology concerns, 2012, 1: 175-200.
[8]	R. A. Johnson. Understanding microwave power splitter[M]. Microwave Journal, 1975.
[9]	黎明, 李再奎, 史清林. 定向耦合器与检波器组成等效信号源反射系数的分析[J]. 齐齐哈尔师范学院学报(自然科学版), 1995, 15(2): 15-17.
[10]	王晋淦. 信号发生器源反射系数的测量方法[J]. 电子测量与仪器学报, 1987, 1(3): 1-10.
[11]	朱军, 李建一, 王增浩. 低反射系数等效信号源的测试方法研究[J]. 中国测试技术, 2008, 34(3): 34-36.
[12]	张翠翠, 王益, 王建忠. 有源器件反射系数测量方法分析[J]. 太赫兹科学与电子信息学报, 2015, 13(2): 26-271.
[13]	代明珍, 崔孝海, 刘欣萌. WR-28功率基准系统中等效源反射系数测量方法[J]. 计量学报, 2012, 33(1): 68-72. doi: 10.3969/j.issn.1000-1158.2012.01.15
[14]	Kwon J Y, Kang T W, Kang J S, et al. A W-band millimeter-wave power standard transfer system using the direct comparison method[J]. The Journal of Korean Institute of Electromagnetic Engineering and Science, 2013, 24(1): 47-54. doi: 10.5515/KJKIEES.2013.24.1.47
[15]	Weidman M P. Direct comparison transfer of microwave power sensor calibrations[EB/OL]. https://www.govinfo.gov/content/pkg/GOVPUB-C13-c6a1068e6a40dd8e571b21514d889d81/pdf/GOVPUB-C13-c6a1068e6a40dd8e571b21514d889d81.pdf.
[16]	YUAN W, DING S, CUI X, et al. NIM Microwave Power Calibration and Measurement Capabilities[C]. 2020 13th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT), 2020.
[17]	Aldossary F, Huneiti Z, Hunaiti Z, et al. The network analyser (HP8510C) as a transfer instrument for power sensor calibration[C]. 2008 IEEE Instrumentation and Measurement Technology Conference, 2008.
[18]	Kızılbey O, Arslan M, Bayrak Y, et al. A Novel Software for Automatic Calibration Factor Measurement of RF Power Sensors[C]. 2022 7th International Conference on Computer Science and Engineering (UBMK), 2022.
[19]	Szatkowski J. Developing RF Power Sensor Calibration Station in Direct Comparison Transfer System using Vector Network Analyzer[J]. Journal of Telecommunications and Information Technology, 2021(3): 18-22.
[20]	Perangin-Angin W K. Development of RF Power Sensor Measurement System Using VNA Method and Heating Block[J]. MAPAN, 2023, 38(4): 805-813. doi: 10.1007/s12647-023-00644-y
[21]	Fantom A. Radio frequency & microwave power measurement[M]. IET, 1990.
[22]	W. K. P. Angin, J. Kwon, T. Kang, et al. Comparison of RF power sensor calibration using a vector network analyzer and a direct transfer system[C]. URSI Asia Pacific Radio Science Conference, 2016.
[23]	张东云, 宋政辉, 潘晓, 等. 微波功率传感器自动校准系统设计与实现[J]. 计量科学与技术, 2022, 66(12): 46-49,54. doi: 10.12338/j.issn.2096-9015.2021.0248
[24]	Juroshek J R. A direct calibration method for measuring equivalent source mismatch[J]. Microwave Journal, 1997, 40(10): 106-113.
[25]	CUI X, LI Y, GAO X, et al. Measurement and evaluation of the WR-28 calorimeter[C]. 77th ARFTG Microwave Measurement Conference, 2011.
[26]	SHIMAOKA K, KINOSHITA M, INOUE T. A Broadband Waveguide Calorimeter in the Frequency Range From 50 to 110 GHz[J]. IEEE Transactions on Instrumentation and Measurement, 2013, 62(6): 1828-1833. doi: 10.1109/TIM.2012.2225956
[27]	HUANG Y, YUAN W, CUI X, et al. WR-42 Waveguide Microcalorimeter for Thermistor Mount Calibration[C]. 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018), 2018.
[28]	刘欣萌. 高频和微波功率基准及其应用研究[D]. 哈尔滨: 哈尔滨工业大学, 2007.
[29]	Jakubowski J. A study on the calibration of an HPM meter based on a D-dot sensor and logarithmic RF power detector[J]. Metrology and Measurement Systems, 2020, 1: 673-685.
[30]	GU DZ, LU XF, LAMROZ B, et al. A self-calibrated transfer standard for microwave calorimetry[C]. Conference on Precision Electromagnetic Measurements, 2018.
[31]	Wong K. Complete power sensor calibration using a VNA[C]. 80th ARFTG Microwave Measurement Conference, 2012.