Balanced polarization diversified cellular antenna

Claim 1

An antenna assembly for use with a vehicle having an electrically nonconductive area separating the interior from the exterior, the vehicle having a cellular telephone transceiver located therein, the assembly comprising: a. balanced-unbalanced transformer means mounted on the nonconductive area on the interior of the vehicle, said transformer means having a coaxial connector adapted to be connected to the telephone transceiver through a coaxial cable, and said balanced-unbalanced transformer means further include an excitable box radiator including an excitable slot, said horizontal radiator being connected to one surface of said box radiator on a side adjacent the interior of the vehicle and said vertical radiator being capacitively coupled to a different surface of said box radiator on a side adjacent the exterior of the vehicle; b. a horizontal radiator connected to said transformer means for transmitting and receiving cellular telephone signals; c. vertical radiator means mounted on the nonconductive area on the exterior of the vehicle and capacitively coupled to said balanced-unbalanced transformer means for transmitting and receiving cellular telephone signals, whereby in a receiving mode, horizontally polarized received energy is received by means of said horizontal radiator and is combined in said transformer means with vertically polarized energy received by means of said vertical radiator, the combined energy being applied to said coaxial connector for transmission to a transceiver and whereby, in a transmitting mode, energy received from the transceiver through said coaxial connector is divided by said transformer means into a portion which is applied to said vertical radiator and into a portion which is applied to said horizontal radiator.