Patent ID: 6201503
Filing Date: 2001-03-13
Classification: H01Q

Abstract:
An antenna for radio device comprising: a mounting metal part having a through hole therein and being attached to a case of a radio device; a first antenna element provided cylindrically to this mounting metal part around the same axis as said through hole and projecting to the outside of the case; conductive tongues projecting from a plurality of places on the first antenna element; a rod-like second antenna element having a rod-like insulating member at its tip portion, and being capable of moving freely in the axial direction of said through hole and said cylindrical first antenna element; said plurality of conductive tongues conductively connecting to a base portion of said second antenna element and to each other when said second antenna element is extracted, and said plurality of conductive tongues clasping either side of said rod-like insulating member, and connecting nonconductively to each other when said second antenna element is stored.