Patent ID: 6898442

Claim:
A wide-band array antenna comprising: N×M antenna elements, and a plurality of multipliers, one multiplier connected to each said antenna element, and each multiplier having a real-valued coefficient, wherein when said antenna elements are placed at distances of d 1 and d 2 in directions of N and M, respectively, the real-valued coefficient of each multiplier is C nm , and by defining two variables as v=ωd 1 sin θ/c, and u=ωd 2 cos θ/c, the response of said wide-band array antenna can be given as: H ⁡ ( u , υ ) = ∑ n = 1 N ⁢ ∑ m = 1 M ⁢ C nm ⁢ ⅇ j ⁡ ( n - 1 ) ⁢ υ ⁢ ⅇ - j ⁡ ( m - 1 ) ⁢ u ( 5 ) by selecting points (u 01 , v 01 ) on a u-v plane according to a predetermined angle of beam pattern and a center frequency of a predetermined frequency band, elements b 1 of an auxiliary vector B=[b 1 , b 2 , . . . , b L ] (L<<N×M) are calculated and the coefficient C nm of each said multiplier corresponding to each antenna element is calculated as C nm = ∑ l = 1 L ⁢ G a - 1 ⁢ b l ⁢ ⅇ - j ⁡ ( n - 1 ) ⁢ υ 0 l ⁢ ⅇ j ⁡ ( m - 1 ) ⁢ u 0 l ( 17 )