Patent ID: 7522123

Claim:
A collapsible antenna equipped with an external adapter characterized in that: an antenna base ( 2 ) coupled to an electronic device ( 4 ) transmitting signals to the electronic device ( 4 ); an antenna body ( 1 ) extends round circumference from the antenna base ( 2 ) to form a first conductive path accessing for a first channel; a proximal end of the antenna body ( 1 ) has a stopper end ( 1 a ) fit in the antenna base ( 2 ), a distal end of the antenna body ( 1 ) is a free end ( 1 b ); and an external adapter ( 3 ) fits over the free end ( 1 b ) of the antenna body ( 1 ), the external adapter ( 3 ) is electrically insulated from the free end ( 1 b ) and the antenna body ( 1 ); the external adapter ( 3 ) accommodates a plug ( 50 ) of an external antenna base ( 5 ) to fit in to form a second conductive path accessing for a second channel; wherein the antenna body ( 1 ) retracted into the antenna base ( 2 ), the first conductive path between the antenna body ( 1 ) and the antenna base ( 2 ) is severed, signals of the first channel are interrupted; while the external adapter ( 3 ) is connected to the antenna base ( 2 ) to form the second conductive path instead, signals of the second channel are transmitted to the antenna base ( 2 ) by the external adapter ( 3 ).