Dual mode antenna and laptop carrying same

摘要

The present invention is a dual mode antenna. The antenna of the invention connects in an inverted-F feed when in a retracted position, and in a monopole feed in an extended position. The antenna mounts adjacent a relatively large ground plane, such as a grounding shell or EMI shield included in a laptop computer display, for example. A preferred antenna includes an elongate radiator mounted in a non-conductive housing to permit retraction and extension of the elongate radiator. The housing includes electrical contact points that form an inverted-F feed antenna connection to the elongate radiator when the elongate radiator is in a retracted position. The electrical contact points form a monopole feed antenna connection to the elongate radiator when the elongate radiator is in an extended position.