JOURNAL OF RADARS
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JOURNAL OF RADARS  2014, Vol. 3 Issue (4): 450-455    DOI: 10.3724/SP.J.1300.2014.14001
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Design of Nonperiodic Density Tapered Arrays with CVT Distributions
Xue Dong-hai Zhu Jie Li Ming-qi Wang Yan-ping Zhang Jun-jie
(The 27th Research Institute of China Electronics Technology Group Corporation, Zhengzhou 450047, China)
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Abstract 

Density Tapered Arrays (DTA) with nonperiodic spaced elements have many interesting features when compared to traditional DTA in which antenna elements are located only at the intersections of periodic grid; however, a design method is yet to be fully develoed. A new approach is presented using Centroidal Voronoi Tessellations (CVT) to design DTA with nonperiodic element distributions proportional to the desired amplitude taper and with nonperiodic and ‘uniform’ properties. A 32.8λ diameter circular aperture array with 1656 elements is discussed and theoretical patterns are computed for density tapers modeled after −25 dB,−30 dB,−35 dB, and −40 dB circular Taylor distributions. The obtained sidelobe levels and aperture efficiency are better than heretofore reported.

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Articles by authors
Xue Dong-hai
Zhu Jie
Li Ming-qi
Wang Yan-ping
Zhang Jun-jie
Key wordsDensity Tapered Array (DTA)   Centroidal Voronoi Tessellations (CVT)   Nonperiodic spaced array     
Received: 2014-01-02; Published: 2014-05-26
Cite this article:   
Xue Dong-hai,Zhu Jie,Li Ming-qi et al. Design of Nonperiodic Density Tapered Arrays with CVT Distributions[J]. JOURNAL OF RADARS, 2014, 3(4): 450-455.
 
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