An antenna for diversity operation comprising: a plurality of connected dual frequency antenna units ( 200, 210, 220, 230), each dual frequency antenna unit having: a first radiation element (202,212,222,232) with a length of a quarter of a wavelength at a first operating frequency; a second radiation element (204,214,224,234) with a length of a quarter of a wavelength at a frequency; second operating frequency distinct from said first operating r frequency; wherein the first radiation element comprises a first conductor, wherein the first conductor is a straight line having first and second ends and the second radiation element comprises a second conductor, wherein the second conductor is arranged with an open end partially encircling the first radiation element; and wherein the second conductor extends from the first conductor at a position such that the first and second conductors share a portion of their lengths, such that the second radiation element shares with said first radiation element a segment of said first radiation element wherein each dual frequency antenna unit further comprises a feed point for coupling a feed to one of said first or second radiation elements such that the elements of said dual frequency antenna units resonate at said first and second operating frequencies respectively and the plurality of connected dual frequency antenna units being arranged in a somewhat star like configuration to provide orthogonal polarization. a plurality of connected dual frequency antenna units ( 200, 210, 220, 230), each dual frequency antenna unit having: a first radiation element (202,212,222,232) with a length of a quarter of a wavelength at a first operating frequency; a second radiation element (204,214,224,234) with a length of a quarter of a wavelength at a frequency; second operating frequency distinct from said first operating r frequency; wherein the first radiation element comprises a first conductor, wherein the first conductor is a straight line having first and second ends and the second radiation element comprises a second conductor, wherein the second conductor is arranged with an open end partially encircling the first radiation element; and wherein the second conductor extends from the first conductor at a position such that the first and second conductors share a portion of their lengths, such that the second radiation element shares with said first radiation element a segment of said first radiation element wherein each dual frequency antenna unit further comprises a feed point for coupling a feed to one of said first or second radiation elements such that the elements of said dual frequency antenna units resonate at said first and second operating frequencies respectively and the plurality of connected dual frequency antenna units being arranged in a somewhat star like configuration to provide orthogonal polarization. a first radiation element (202,212,222,232) with a length of a quarter of a wavelength at a first operating frequency; a second radiation element (204,214,224,234) with a length of a quarter of a wavelength at a frequency; second operating frequency distinct from said first operating r frequency; wherein the first radiation element comprises a first conductor, wherein the first conductor is a straight line having first and second ends and the second radiation element comprises a second conductor, wherein the second conductor is arranged with an open end partially encircling the first radiation element; and wherein the second conductor extends from the first conductor at a position such that the first and second conductors share a portion of their lengths, such that the second radiation element shares with said first radiation element a segment of said first radiation element wherein each dual frequency antenna unit further comprises a feed point for coupling a feed to one of said first or second radiation elements such that the elements of said dual frequency antenna units resonate at said first and second operating frequencies respectively and the plurality of connected dual frequency antenna units being arranged in a somewhat star like configuration to provide orthogonal polarization.