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| On New Fitting Method of Large Distorted Antenna Reflectors Based on Coons Surface and B-Spline |
| Wang Cong-si; Duan Bao-yan; Qiu Yuan-ying |
| School of Electromechanical Engineering, Xidian Univ., Xi’an 710071, China |
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Abstract A noval Divided-Fitting Method based on Coons surface and B-spline (DFMB) to fit the distorted antenna affected by different loads is presented for accurately describing the real deformation of antenna surface. It firstly divides the distorted reflector into many individual zones, uses the Coons surface to fit each zone, and determines the boundary of each zone by third-order hoop and second-order radial B-spline curves. Then the precise local and total information of distorted reflector can be obtained to compute the electrical performances of antenna. The good electromechanical simulation results of the application to a 16-m parabolic antenna proved the validity of developed method.
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Received: 19 June 2006
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2008, Vol. 30 
