Capacitor loaded-type single pole planar antenna for mobile phone, has low band antenna with tailing end on which capacitor and open stub of preset frequency are installed

摘要

The antenna has a base (10) installed on interiorly metal shielded communication equipment. A low band antenna (12) with a quarter wavelength of 900 MHz is provided on a surface (11) of the base. A capacitor (16) and a open stub (15) of the same wavelength of 1800MHz which functions as high band antenna, are installed on the tailing end of the antenna.