Journal of Xidian University ›› 2016, Vol. 43 ›› Issue (4): 147-153.doi: 10.3969/j.issn.1001-2400.2016.04.026

• Article • Previous Articles     Next Articles

Research on the shared aperture multifunction  wideband array antenna

LI Longjun;WANG Buhong   

  1. (School of Information and Navigation, Air Force Engineering Univ., Xi'an  710077, China)
  • Received:2015-06-03 Online:2016-08-20 Published:2016-10-12

Abstract:

The paper presents a new technology for designing the shared aperture wideband array with multiple interleaved sub-arrays based on the energy match of sub-array excitation distribution. In view of the Fourier transform relationship between the array pattern and elements excitation, the mathematical relationship between the array working frequency and elements excitation is achieved. The interleaved thinned sub-arrays with different working frequencies are designed with the positions of the elements achieved by way of the energy match of sub-array excitation distribution and the theory of density weighted array. Theoretical analysis and experimental simulation show that the peak side-lobe levels of the interleaved sub-arrays under different working frequencies which are designed by the proposed method are restrained with the grating lobe suppressed. The multifunction wideband array is achieved as the working bandwidth of array antennas is broadened effectively.

Key words: energy match, wideband array, density weighted array, interleaved thinned array, Fourier transform