SUN Tian-xi(孙天锡), WANG Ya-jun(王亚军)
(School of Physics and Mechanical & Electrical Engineering of Xiamen University, Xiamen 361000, China)
Abstract：To measure the working band of a digital attenuator automatically, a program based on virtual instrument was carried out, using Agilent E8362B network analyzer as its measuring tool. In the program, the attenuation values can be automatically written into Excel table to form the frequency-attenuation curve. Finally, through analyzing the attenuation in different frequency, the best working band of the digital attenuator can be determined easily, and the whole process is automated. Compared with the traditional way of changing the measured parameters manually and recording the measured data one by one, the developed method in the paper can avoid the cumbersome manual operation and its possible errors to improve the measurement accuracy and efficiency.
Key words：microwave attenuator; working band; GPIB interface; virtual instrument； computer automation
CLD number： TN715 Document code： A
Article ID： 1674-8042(2012)01-0018-04 doi： 10.3969/j.issn.1674-8042.2012.01.004
References
[1] Tippet J C, Speciale R A. A rigorous technique for measuring the scattering matrix of multiport device with a 2-port network analyzer. IEEE Trans. on Microwave Theory and Techniques, 1982 30(5): 661-666.
[2] Sarkissian J C, Delmond M, Laporte E, et al. A Ku-band 6 bit digital attenuator with integrated serial to parallel converter. IEEE MTT-S International Microwave Symposium Digest, 1999, 4: 1951-1918.
[3] ZHAO Bo, SONG Ping. Designing radio-frequency electromagnetic field immunity of watt-hour meter test system based on LabVIEW. Proc. of the 4th Asia-Pacific Conference on Environmental Electromagnetics, 2006, 1: 434-438.
[4] NI Zu-rong, Xiao Fen. The software designment for a microwave automatically measuring system. Journal of Xiamen University(Natural Science), 2004, 43(1): 46-49.
[5] WANG Ting-ting, WANG Jun. Design of automatic testing system with GPIB interface. Electronic Measurement Technology, 2007, 30(5): 154-157.
[6] JIA Jiang-guang, KUANG Jing-ming, HE Zun-wen, et al. Design of automated test system based on GPIB. Proc. of the 9th International Conference on Electronic Measurement & Instruments, 2009, 1: 943-948.
[7] CAO Xu, XUE Ming-hua. Auto measurement method of attenuators. Electronic Measurement Technology, 2006, 29(2): 25-26.
[8] ZHENG Juan-juan, TAO An-li, LIU Shou-shan, et al. Design of arbitrary waveform generator base on virtual instrument technology. Journal of Measurement Science and Instrumentation, 2011, 2(1): 96-98.
[9] HOU Guo-ping, WANG Kun, YUE Qi-xin. Labview 7.1 programming & virtual instruments designing. Beijing: Tsinghua Unversity Press, 2005: 259-281.
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