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Volume 33 Issue 03
Mar.  2007
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Journal of Beijing University of Aeronautics and Astronautics  > 2007  >  33(03): 341-344.
Lü Shanwei, Wu Dongmei, Wang Wei, et al. Design of focal plane array of radio telescope[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(03): 341-344. (in Chinese)
Citation: Lü Shanwei, Wu Dongmei, Wang Wei, et al. Design of focal plane array of radio telescope[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(03): 341-344. (in Chinese)
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Design of focal plane array of radio telescope

  • 1.

    School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • 2. The Second Academy, China Areo-space Science & Industry Corp., Beijing 100854, China

  • 3. The National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China

  • Received Date: 04 Apr 2006
  • Publish Date: 31 Mar 2007
    Abstract
  • In order to increase the field of view (FOV) of the radio telescope, a new grid method named the conforming grid was proposed when the FOV of the telescope was analyzed. With this grid, the physics optical (PO) method is more accurate and fewer grids are needed compared to the conventional PO method. With the modified method, the focal field of WSRT telescope was computed. Based on the result, the dense focal plane array was designed for the telescope. The weights of focal plane array were given by the conjugate field method and the far fields of WSRT were computed. It is proven that a wider FOV, higher gain and aberration correction are obtained by dense focal plane array compared to the single feed.

     

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  • [1] Weem J P, Popovic Z, Notaros B M. Vivaldi antenna arrays for SKA Antennas and Propagation Society International Symposium. :IEEE&IEE Publications,2000,V1:174-177 [2] Ivashina M V, van Ardenne A, Bregman J D, et al. Activities for the square kilometer array (SKA) in Europe IVth International Conference on Antenna Theory and Techniques,2003, V2:633-636l [3] Ivashina M, van Ardenne J D B A. A way to improve the field of view of the radiotelescope with a dense focal plane array Microwave and Telecommunication Technology 12th International Conference,2002:278-281 [4] 王宇. 相控馈电双反射面天线的研究 . 北京:中国空间技术研究院, 2003 Wang Yu. Research on the phased-array-fed dual-reflector antenna . Beijing:Chinese Academy of Space Technology, 2003(in Chinese) [5] Ivashina M V, Bregman J D, bij de Vaate J G, et al. Experimental results for a focal plane array, synthesized with conjugate field method Antennas and Propagation Society International Symposium. :IEEE&IEE Publications, 2004, V1:21-24
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