Patent ID: 7589680

Claim:
An antenna unit, comprising: left and right antennas spaced apart from each other and operable within a first frequency bandwidth; and a parasitic coupler spaced apart from and disposed between said left and right antennas, and electromagnetically coupled to said left and right antennas so as to be operable within a second frequency bandwidth different from the first frequency bandwidth, wherein each of said left and right antennas includes: a radiating element that has left and right ends, and an intermediate portion interconnecting said left and right ends thereof, one of said left and right ends being disposed distal from said parasitic coupler, the other of said left and right ends being disposed proximate to said parasitic coupler; a grounding element that has upper and lower ends, said upper end of said grounding element being coupled to said one of said left and right ends; and a feeding element that has upper and lower ends, said upper end of said feeding element being coupled to said intermediate portion of said radiating element.