Patent ID: 7212158

Claim:
A beam shaping method based on broadband antenna, comprising: measuring a frequency of input signals of an antenna, the antenna comprising an antenna array, wherein the input signals can include signals with different frequencies, including an original frequency and a second frequency different from the original frequency; determining an effective antenna aperture between elements of the antenna array according to a measured frequency, wherein determining includes re-sampling at the antenna elements to ensure that the antenna's effective aperture changes from a first effective aperture to a second effective aperture to keep a beam width of the antenna constant with the two frequencies; computing a weight vector of each element of the antenna array to the input signals according to (i) the determined effective antenna aperture and (ii) a transmission function of the antenna array; and multiplying each of the input signals with a corresponding one of said weight vector of each element of the antenna array to the input signals, combining them into beam signals with constant beam width and outputting the beam signals.