Multifrequency inverted-F antenna

Abstract

A multifrequency inverted-F antenna includes a radiating element having opposite first and second ends, a grounding element spaced apart from the radiating element, and an interconnecting element extending between the radiating and grounding elements and including first, second, and third parts. The first part is connected to the radiating element at a feeding point between the first and second ends. The second part is offset from the first part in a longitudinal direction, and is connected to the grounding element. The third part interconnects the first and second parts. A feeding line is connected to the interconnecting element.

1 - 12 . (canceled)  
   
   
       13 . A multifrequency antenna comprising: 
 a radiation element having a first radiating section and a second radiating section, wherein said first radiating section and said second radiating section are connected at a first site;    a ground element;    an interconnection element connected to said first site of said radiation element and said grounding element; and    a feed line connected to said interconnection element.    
   
   
       14 . The multifrequency antenna of claim  1 , wherein said radiation element is in the form of a plate.  
   
   
       15 . The multifrequency antenna of claim  2 , wherein said first radiating unit of said radiation element comprises a recess at one side.  
   
   
       16 . The multifrequency antenna of claim  2 , wherein the surface of said radiation element is substantially perpendicular to said interconnection element.  
   
   
       17 . The multifrequency antenna of claim  1 , further comprising a substrate for carrying said radiation element and said interconnection element.  
   
   
       18 . The multifrequency antenna of claim  5 , wherein said ground element is disposed on said substrate.  
   
   
       19 . The multifrequency antenna of claim  5 , wherein said radiation element, said interconnection element, and said substrate from a flexible print circuit.  
   
   
       20 . A portable electronic device comprising: 
 a main board module;    a display connected to said main board module having 
 a display housing and  
 a display unit wherein said display unit is mounted in said display housing;  
   an antenna having 
 a radiation element comprising a first radiating section and a second radiating section, wherein said first radiating section connects to said second radiating section at a first site,  
 a ground element and  
 an interconnection element in which said interconnection element interconnects said radiation element and said grounding element, and wherein said interconnection element of said antenna connects to said first site of said radiation element; and  
   a feed line connected to said interconnection element of said antenna and electrically connected to said main board module.    
   
   
       21 . The portable electronic device of claim  8 , wherein said ground element of said antenna electrically connects to a back plate of said display unit.  
   
   
       22 . The portable electronic device of claim  8 , where said antenna further comprising a substrate for carrying said radiation element and said interconnection element.  
   
   
       23 . The portable electronic device of claim  10 , wherein said ground element is disposed on said substrate.  
   
   
       24 . The multifrequency antenna of claim  10 , wherein said radiation element, said interconnection element, and said substrate from a flexible print circuit board.