Patent ID: 6016431
Filing Date: 2000-01-18
Classification: H01Q

Abstract:
A radiotelephone, comprising:a radiotelephone housing having opposing first and second ends, said first end including a passage having a predetermined length wherein said passage includes at least one conducting portion thereon;a conductive shell having first and second segments positioned in a top portion of said housing, wherein said first segment is cylindrical and is positioned proximate to said passage and said second segment is positioned such that it is spatially separated a further distance away from said passage relative to said first cylindrical segment; anda retractable antenna having opposing first and second ends and defining a central axis through the center thereof, said antenna slidably extendable through said passage about said central axis between a first extended position and a second retracted position;wherein when said antenna is in said first extended position said antenna transversely aligns with said conductive shell to define a coaxial capacitor therebetween.