Patent ID: 7030832

Claim:
A multi-beam-reflector dish antenna system comprising: a reflector for simultaneously receiving signals from a plurality of satellites; and at least a first low noise block with integrated feed (LNBF) module for receiving focused waves, 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 2.1 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 −6.886965 0.00E+00 0 1 −0.4044881 0.00E+00 0 2 4.81E−03 0.00E+00 0 3 −6.92E−04 0.00E+00 1 0 0.00E+00 1.619216 1 1 0.00E+00 −9.52E−03 1 2 0.00E+00 −2.61E−04 2 0 0.1238 0.00E+00 2 1 −6.41E−03 0.00E+00 2 2 1.00E−05 0.00E+00 3 0 0.00E+00 2.35E−02 3 1 0.00E+00 1.07E−03 4 0 −1.44E−03 0.00E+00 4 1 1.12E−03 0.00E+00 5 0 0.00E+00 −3.20E−03 6 0 −2.12E−03 0.00E+00 wherein the values of C nm and D nm are zero when corresponding variables n and m are not listed.