Patent ID: 7548215

Claim:
A multi-beam-reflector dish antenna system comprising: a reflector for simultaneously receiving signals from a plurality of satellites; and a first low noise block with integrated feed (LNBF) module for receiving radiation waveforms generated by the reflector, in which the reflector is formed according to the following steps of: providing the reflector having N-th order curve surface where the value of factor N equals to 2 returned by F(x) N +F(y) N =F(z); executing expansion according to the equation to achieve expansion of z ⁡ ( t , θ ) = ∑ 0 n ⁢ ∑ 0 m ⁢ [ C n ⁢ ⁢ m ⁢ cos ⁢ ⁢ n ⁢ ⁢ θ + D n ⁢ ⁢ m ⁢ sin ⁢ ⁢ n ⁢ ⁢ θ ] ⁢ F m n ⁡ ( t ) , in which expansion coefficients of C nm and D nm are variables; analyzing the radiation waveforms of the reflector according to the expansion coefficients of C nm and D nm ; synthesizing the radiation waveforms of the reflector to generate a corresponding radiation pattern; and acquiring the multi-beam-reflector dish antenna according to the expansion coefficients, C nm and D nm , and the radiation pattern; wherein the values of the expansion coefficients C nm and D nm are substantially: n m C nm D nm 0 0 −10.120820 0.000000E+00 0 1 −7.044662E−01 0.000000E+00 0 2 4.054082E−03 0.000000E+00 0 3 −7.962435E−04 0.000000E+00 1 0 0.000000E+00 1.884815 1 1 0.000000E+00 −6.625697E−03 1 2 0.000000E+00 1.293241E−03 2 0 4.837928E−01 0.000000E+00 2 1 −9.740479E−04 0.000000E+00 2 2 −5.823930E−04 0.000000E+00 3 0 0.000000E+00 7.859746E−03 3 1 0.000000E+00 −9.120623E−04 4 0 −8.800388E−04 0.000000E+00 4 1 −1.013141E−03 0.000000E+00 5 0 0.000000E+00 −4.191973E−07 6 0 −1.080019E−06 0.000000E+00 wherein the values of C nm and D nm are zero or between 10 −10 and 10 −6 when corresponding variables n and m are not listed.