Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 1378-1381 |
| Number of pages | 4 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 36 |
| Issue number | 11 |
| State | Published - Nov 2010 |
Keywords
- Antennas
- Arrays
- Lenses
- Near field
- Scattering
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