Patent ID: 7791545
Filing Date: 2010-09-07
Classification: H01Q

Abstract:
1. A multiband antenna comprising: a radiator, including: a microwave substrate, a coupling conductor disposed on the microwave substrate, a first conductor disposed on the microwave substrate and being separated from the coupling conductor by a clearance to electrically isolate the first conductor from the coupling conductor, a second conductor disposed on the microwave substrate with one end connected to the first conductor, and the other end extending away from the first conductor, a third conductor disposed on the microwave substrate and extending in parallel with the first conductor and toward a peripheral side of the microwave substrate, and a connecting conductor disposed on the microwave substrate and having a first end connected to a junction where the first conductor and the second conductor are connected to each other, and a second end connected to the third connector, a feed cable comprising a positive signal wire connected with the coupling conductor and a negative signal wire connected with the third conductor; a first extension conductor electrically connected with the first conductor and the second conductor; and a second extension conductor electrically connected with the third conductor; wherein the clearance between the coupling conductor and the first conductor is less than 3 mm.