Patent ID: 6218993
Filing Date: 2001-04-17
Classification: H01Q

Abstract:
A gain structure of a stretchable antenna for mobile phones comprising:an insulating connecting member connected with an insulation lining in a hole provided on the top of said mobile phone, said connecting member is provided with a first inner bore, a second connecting inner bore communicating with said first inner bore, and a third inner bore opened downwardly and communicated with said second connecting inner bore;a coil antenna provided in said first inner bore;a metallic conductive block mounted at the inner bottom of said first inner bore, one end of said coil antenna is abutted on the inner top surface of said first inner bore, while the other end thereof is abutted on the upper surface of said metallic conductive block, said metallic conductive block is provided with a central hole with a diameter larger than that of said rod antenna and is provided with a radial hole;a spring sheet having a top folded end thereof fixedly inserted into said radial hole of said metallic conductive block, and having the other end thereof extended for a distance, the bottommost point thereof under a pressing force thus abuts on and is electrically connected with an internal electric circuit board of said mobile phone;a rod antenna mounted in said connecting member freely stretchable and contractible, it is provided with a top cap and a metallic bottom end sleeve,said rod antenna is not electrically connected when it is retracted, when said rod antenna is stretched out, said metallic bottom end sleeve thereof is pressed into a central hole of said metallic conductive block to make electric connection therewith.