Patent ID: 8754824

Claim:
A slim triple-band base station for mobile/cellular services including a radiating part, said radiating part comprising: at least two antenna arrays, said at least two antenna arrays being radially spaced from a central axis of a structure of said slim triple-band base station; a substantially cylindrical radome for housing said at least two antenna arrays and being made of a dielectric material; a central support aligned with respect to said central axis; said at least two antenna arrays are mounted on said central support at a selected distance and substantially parallel to said central axis; each antenna array of the at least two antenna arrays is respectively placed longitudinally within an angular sector defined around said central axis; an antenna array of the at least two antenna arrays operating at a first frequency band, a second frequency band, and at a third frequency band, and the antenna array comprises: a first set of radiating elements operating at least said first frequency band wherein some radiating elements from the first set of the radiating elements operating at only said first frequency band; a second set of radiating elements operating at said second frequency band wherein some radiating elements from the second set of the radiating elements operating at only said second frequency band; a third set of radiating elements operating at both said third frequency band and said first frequency band; a fourth set of radiating elements operating at both said third frequency band and said second frequency band; at least some of the radiating elements of said first set of radiating elements are interlaced with at least some of the radiating elements of said third set of radiating elements; at least some of the radiating elements of said second set of radiating elements are interlaced with at least some of the radiating elements of said fourth set of radiating elements; and in the antenna array, a combination of said some radiating elements from the first set with all radiating elements of the third set provides operation of the triple-band antenna array at said first frequency band; a combination of said some radiating elements from the second set with all radiating elements of the fourth set provides operation of the triple-band antenna array at said second frequency band; a combination of all radiating elements from the third set with all radiating elements of the fourth set provides operation of the triple-band antenna array at said third frequency band; and said antenna array further comprising a set of compact phase shifters to provide variable electrical downtilt, wherein said downtilt is independent for said first, second and third frequency bands of the triple-band antenna array.