Abstract: A tri-band antenna (10) is provided having a pair of antenna elements (12, 14), in which the first antenna element (14) operates in a first UHF frequency band, and the second antenna element (12) operates in a second VHF band and a third cellular frequency band. The bottom end (12a, 14a) of each of the antenna elements (12, 14) is fixed into a first member (16) from which the antenna elements extend parallel and spaced apart from each other to their different respective heights. A second member (13) couples the antenna elements (12, 14) to each other at a distance from the first member (16) to adjust the operation of the tri-band antenna (10) in at least the UHF band. A base member (19) is provided for mounting the tri-band antenna (10) along a surface of a vehicle. A signal feed member (20) extends through the base member (19) and has one end (20a) attached to the first member (16) and another end (20b) providing a RF connector.

Abstract: A tri-band antenna is provided having a pair of antenna elements, in which the first antenna element operates in a UHF band, and the second antenna element operates in VHF and cellular bands. The antenna elements are fixed into a first member from which the antenna elements extend parallel and spaced apart from each other to their different respective heights. A second member couples the antenna elements to each other at a distance from the first member to adjust at least the UHF band. A base member is provided for mounting the tri-band antenna on a vehicle. A signal feed member extends through the base member and has one end attached to the first member and another end providing a RF connector. The signal feed member provides the antennal elements, via the first member, with a common signal path for transmission and reception of RF signals in all three bands.