公开(公告)号：GB2430081B

公开(公告)日：2008-10-08

申请号：GB0617193

申请日：2005-02-23

Applicant: IBM ,  LENOVO

Inventor： GAUCHER BRIAN PAUL ,  LEE PETER ,  LIU DUIXIAN ,  WU CHANGYU

IPC: H01Q5/00 ,  H01Q1/24 ,  H01Q5/10 ,  H01Q5/371 ,  H01Q5/378 ,  H01Q9/04 ,  H01Q9/06 ,  H01Q9/16

公开(公告)号：GB2430081A

公开(公告)日：2007-03-14

申请号：GB0617193

申请日：2005-02-23

Applicant: IBM

Inventor： GAUCHER BRIAN PAUL ,  LEE PETER ,  LIU DUIXIAN ,  WU CHANGYU

IPC: H01Q5/00 ,  H01Q1/24 ,  H01Q5/10 ,  H01Q5/371 ,  H01Q5/378 ,  H01Q9/04 ,  H01Q9/06

Abstract: Multiband antennas are provided that can be embedded in computing devices such as portable laptop computers and cellular phones, for example, to provide efficient wireless communication in multiple frequency bands. Exemplary embodiments include monopole multiband antennas, dipole multiband antennas, and inverted-F antennas, having one or more coupled and/or branch radiating elements, for providing multiband operation in two or more frequency bands. For example, an exemplary multiband antenna (100) includes a ground element (101), a monopole radiator (102) connected to the ground element (101) and having a feed tab (103) extending therefrom, a coupled radiator (104) connected to the ground element (101) and a branch radiator (105) that is connected to the monopole radiator (102). The antenna elements can be formed from thin sheet metal, such as copper or brass. The antenna (100) can be fed using a coaxial cable, for example, wherein a center conductor is electrically connected to feed element (103) via a solder connection and wherein in the outer conductor (ground) of the coaxial cable is electrically connected to the ground element (101) via a solder connection.