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�������պ����ѧѧ�� 2011, Vol. 37 Issue (6) :728-732    DOI:
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����1, ������1, �翡��1, ����ɽ2*
1. �������պ����ѧ ������Ϣ����ѧԺ, ���� 100191;
2. �й���ѧԺ �ռ��ѧ��Ӧ���о�����, ���� 100190
Polynomial calibration method for millimeter-wave reflectometer
Zhao Xin1, Liu Jinyang1, Miao Jungang1, Jiang Jingshan2*
1. School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China

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Abstract�� In order to measure the accurate reflection coefficient of waveguide component at millimeter-wave band, a method for reflectometer calibration was proposed. The calibration method was based on a polynomial error model, making the solution of each error term transformed into a problem solving the center of a circle trace, without reducing the solution precision. The method adopted a sliding load, a sliding short and a short circuit, thus reduced the requirements of standards in the millimeter-wave band. In experiment, a Ka-band reflectometer was built, the errors- solving processes and physical meanings were presented. After calibration, measurement results from reflectometer and vector network analyzer (VNA) were compared, and good agreement was achieved. Measurement results of a W-band corrugated horn were also compared, which further validate the method.
Keywords�� millimeter waves   reflection   reflectometers   calibration   standards   polynomials     
Received 2010-11-25;
Fund:

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About author: �� ��(1983-),��,������÷��,��ʿ��,xinzhao@ee.buaa.edu.cn.
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����, ������, �翡��, ����ɽ.Ӧ���ں��ײ�����ƵĶ���ʽУ׼����[J]  �������պ����ѧѧ��, 2011,V37(6): 728-732
Zhao Xin, Liu Jinyang, Miao Jungang, Jiang Jingshan.Polynomial calibration method for millimeter-wave reflectometer[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(6): 728-732
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