Patent ID: 7148849
Filing Date: 2006-12-12
Classification: H01Q

Abstract:
1. A multi-band antenna with a high frequency operating band and a low frequency operating band, comprising: a radiating element, having a feed-in point for transmitting signals and a plurality of radiation arms, wherein the radiation arms comprise: a first radiation arm, coupled to the feed-in point, having a first resonant mode; a second radiation arm, having a length that is different than a length of the first radiation arm, and being coupled to the feed-in point and having a second resonant mode, wherein the first resonant mode and the second resonant mode jointly generate the high frequency operating band, and the operating bandwidths of the first radiation arm and the second radiation arm being different, and partially overlapping each other; and a third radiation arm, coupled to the feed-in point, having a third resonant mode for generating the low frequency operating band; a grounding plane, having a grounding point; and a short-circuiting element, for coupling the radiating element to the grounding plane.