Patent ID: 6765530
Filing Date: 2004-07-20
Classification: H01Q

Abstract:
An array antenna, comprising:at least a first row of antenna elements having a first plurality of pairs of antenna elements including at least a first pair and a second pair, said first pair including first and second antenna elements, said second pair including third and fourth antenna elements, said second pair being isolated from said first pair and in which said first and second antenna elements are unisolated from each other and said third and fourth antenna elements are unisolated from each other, wherein a coupling structure couples said first and second antenna elements together, a difference in length of said coupling structure between said first and second antenna elements has a first magnitude and said first magnitude is substantially the same as a first lateral distance between said first and second antenna elements, each of said first, second, third and fourth antenna elements having a longitudinal center axis, each of said first, second, third and fourth antenna elements being laterally spaced from each other in a direction substantially perpendicular to said longitudinal center axes, said first lateral distance being defined between said center longitudinal axes of said first and second antenna elements.