Antenna array for minimizing co-channel interference

Claim 2

An antenna system for reducing co-channel interference in a signal receiving network, said system comprising: at least four logarithmically periodic antenna elements having corresponding points disposed in a common plane, a first two of said antenna elements also disposed within a horizontal plane, the remaining two of said antenna elements also disposed within a vertical plane, said first two elements being substantially equal first distances from the line of intersection of said horizontal and vertical planes and said remaining two elements being substantially equal second distances from the said line of intersection, a support structure, and means for cantilever mounting said antenna elements on said structure with the maximum sensitivities of said antenna elements directed outwardly from said support structure, said support structure including a tower and at least two crossarm members, said crossarm members being connected to one another and disposed substantially perpendicularly with one another; said four antenna elements being cantilever connected to the respective four ends of said crossarm members; and at least one of said crossarm members being connected to said tower, said tower including at least three vertically extending support members, said one crossarm member being connected to one of said support members.

Claim 3

An antenna system for producing a signal without co-channel interference in a signal receiving network, said system comprising: at least four logarithmically periodic antenna elements having corresponding points disposed in a common plane, a first two of said antenna elements also disposed within a horizOntal plane perpendicular to said common plane, the remaining two of said antenna elements also disposed within a vertical plane perpendicular to said common plane, said first two elements being substantially equal first distances from the line of intersection of said horizontal and vertical planes and said remaining two elements being substantially equal second distances from the said line of intersection, a support structure, and means for cantilever mounting said antenna on said structure with the maximum sensitivities of said antenna elements directed outwardly from said support structure, said antenna system including at least 16 of said elements including said four elements, with each of said 16 elements disposed in one of a plurality of parallel first planes which each have a plurality of elements and which are each transverse to said common plane with each element in each said first plane spaced equidistantly from the other elements in that firt plane, disposed in one of a plurality of parallel second planes each having a plurality of elements and which are each transverse to said planes and to said common plane with each element in each said second plane spaced equidistantly from the other elements in that second plane, disposed in one of a plurality of parallel horizontal planes all but two of which have a plurality of elements and which are each transverse to said common plane with each element in each said horizontal plane spaced equidistantly from the other elements in that horizontal plane and disposed in one of a plurality of vertical planes all but two of which have a plurality of elements and which are each transverse to said common plane with each element in each said vertical plane spaced equidistantly from the other elements in that vertical plane.

Claim 4

An antenna system for producing a signal without co-channel interference in a signal receiving network, said system comprising: at least four logarithmically periodic antenna elements having corresponding points disposed in a common plane, a first two of said antenna elements also disposed within a horizOntal plane perpendicular to said common plane, the remaining two of said antenna elements also disposed within a vertical plane perpendicular to said common plane, said first two elements being substantially equal first distances from the line of intersection of said horizontal and vertical planes and said remaining two elements being substantially equal second distances from the said line of intersection, a support structure, and means for cantilever mounting said antenna on said structure with the maximum sensitivities of said antenna elements directed outwardly from said support structure, said antenna system including at least 16 of said elements including said four elements, with each of said 16 elements disposed in one of a plurality of parallel first planes which each have a plurality of elements and which are each transverse to said common plane with each element in each said first plane spaced equidistantly from the other elements in that firt plane, disposed in one of a plurality of parallel second planes each having a plurality of elements and which are each transverse to said planes and to said common plane with each element in each said second plane spaced equidistantly from the other elements in that second plane, disposed in one of a plurality of parallel horizontal planes all but two of which have a plurality of elements and which are each transverse to said common plane with each element in each said horizontal plane spaced equidistantly from the other elements in that horizontal plane and disposed in one of a plurality of vertical planes all but two of which have a plurality of elements and which are each transverse to said common plane with each element in each said vertical plane spaced equidistantly from the other elements in that vertical plane.

Claim 5

An antenna system as in claim 2 including at least 36 of said elements.