Patent ID: 6140973
Filing Date: 2000-10-31
Classification: H01Q,H04B

Abstract:
A dual-band antenna construction functioning as two quarter-wave length antennas comprising a feed conductor (11, 21) and a first radiating antenna element (12, 22, 24, 25, 26, 27), said first radiating antenna element having a first end and a second end, characterized in that the feed conductor is substantially electrically unshielded and serves as a radiator together with said first radiating antenna element and is coupled to the first radiating antenna element at a tapping point (13, 23) which is located between said first end and second end, and which divides the first radiating antenna element into two parts having unequal electrical lengths, said first radiating antenna element having a common uni-directional physical characteristic immediately before and after said tapping point.