Volume 36 Issue 11
Nov.  2010
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Wang Hui, Miao Jungang, Jiang Jingshanet al. Compact array antenna in Ka band for near-field scattering measurements[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(11): 1378-1381. (in Chinese)
Citation: Wang Hui, Miao Jungang, Jiang Jingshanet al. Compact array antenna in Ka band for near-field scattering measurements[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(11): 1378-1381. (in Chinese)

Compact array antenna in Ka band for near-field scattering measurements

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  • Corresponding author: Wang Hui
  • Received Date: 13 Oct 2009
  • Publish Date: 30 Nov 2010
  • A four-element compact array antenna was designed operating in Ka band for near-field scattering measurements, and an approximately uniform amplitude and phase distribution in the near fields of array antenna was achieved. The radiating element consists of pyramidal horn antenna and E-plane metal-lens antenna. The feed network consists of magic T and bend waveguides, providing equal magnitude and phase signals for radiating elements. The lengthways length of the array is significantly reduced by employing array and E-plane metal-lens antenna, and the electrical performance is also improved. The near fields of array antenna was tested, and the test results were analyzed. In the plane 0.5 m from the aperture of the array with width equal to that of the array, the amplitude and phase ripples are around ±2.5 dB and ±25° respectively.

     

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