Patent ID: 6424302
Filing Date: 2002-07-23
Classification: H01Q

Abstract:
A simplified dual-frequency antenna for a mobile phone, comprising a main body and a cover;said main body being made of a thin metal conductor that is integrally stamped into a desired shape to include a curved wave coil at an upper end and an elongated contact head at the lower end of said main body; said curved wave coil including horizontal wave segments and vertical wave segments adapted to two different frequencies of 900 MHz and 1800 MHz, respectively; and said elongated contact head at the lower end of said main body having a stop ring mounted around a lower portion thereof, said stop ring being integrally provided at a predetermined distance below it with a bolt adapted to screw into an antenna jack provided on a mobile phone; and said cover being made of an insulating plastic material and having a shape suitable for protectively enclosing said curved wave coil of said main body therein with said stop ring tightly fitted in a lower opening of said cover; whereby when said elongated contact head is inserted into said antenna jack on said mobile phone and said bolt is fully screwed into said antenna jack, said main body protectively enclosed by said cover is quickly and removably connected to said mobile phone with a lower end of said contact head contacting with a conductive leaf spring provided in said mobile phone, enabling said mobile phone to accurately receive signals.