Patent ID: 6137998
Filing Date: 2000-10-24
Classification: H01Q

Abstract:
An antenna assembly, comprising:an antenna having a top load element and a linear element, said linear element having a conductive core and an outer surface, said antenna including opposing first and second ends with corresponding first and second electrical contacts and defining a central axis through the center thereof;an elongated cylindrical guide radially aligned with said antenna along the central axis, said antenna configured to receive said antenna therein, wherein said cylindrical guide has a non-conductive inner surface and a conductive outer surface and opposing first and second end portions, wherein said guide has a continuous perimeter surface away from said guide first end, and wherein said antenna retracts and extends in and out of said guide such that when said antenna is retracted a major portion of said antenna is enclosed therein; anda conductive element integrally attached to said cylindrical guide second end portion such that it provides a continuous perimeter therefor, wherein said conductive element is in electrical communication with an electrical ground, and wherein, when said antenna is retracted, said antenna first end electrical contact is operably associated with a signal feed contact and said antenna second electrical contact abuts said conductive element whereby said antenna and said cylindrical guide define a portion of an impedance matching circuit.