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�������պ����ѧѧ�� 2004, Vol. 30 Issue (12) :1173-1177    DOI:
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���޾�1, ����ΰ1, ����2, ���ʶ�3*
1. �������պ����ѧ ������Ϣ����ѧԺ ���� 100083;
2. ����ң���豸�о���, ���� 100854;
3. �й���ѧԺ ��������̨, ���� 100012
Modified Woodward synthesis method and application to design the feed of large aperture antennas
Han Yanju1, Lü Shanwei1, Wang Jie2, Nan Rendong3*
1. School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics�� Beijing 100083, China;
2. Beijing Institute of Remote��Sensing Equipment, Beijing 100854,China;
3. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China

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Abstract�� A new method of antenna directional pattern synthesis using least-squares or pseudoinverses is presented here ,which is based on the analysis of traditional Woodward-Lawson synthesis method and other modified methods. This new method combined with array beamforming technology is used to design the elementary directional pattern of large aperture antenna/FAST(five-hundred meter aperture spherical telescope). The number of samples can be either equal to or larger than the dimension of antenna arrays in this presented method.And there is no constraints in the synthesis areas.So the synthesized beamforming is much more flexible, and has much wider application situations.
Keywords�� antenna directional patterns   synthesis   principle of least squares   antenna feed   antenna beams     
Received 2003-06-23;

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About author: ���޾�(1976-),Ů,ɽ��������,˶ʿ��, sdhanyj@sina.com.
���޾�, ����ΰ, ����, ���ʶ�.�Ľ���Woodward������������ƴ����������Դ[J]  �������պ����ѧѧ��, 2004,V30(12): 1173-1177
Han Yanju, L�� Shanwei, Wang Jie, Nan Rendong.Modified Woodward synthesis method and application to design the feed of large aperture antennas[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(12): 1173-1177
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