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An ultrawideband planar inverted-F antenna (PIFA) with a capacitive feed in the folder-type or clamshell mobile phone for penta-band operation is presented. The antenna is placed at the hinge position between the main and upper ground planes of the folder-type mobile phone. With the use of the capacitive feed, a very wide operating bandwidth (3:1 VSWR or 6-dB return loss) of about 1.5 GHz (from 820...
A novel planar inverted-F antenna with a capacitive feed to generate a very wide operating band for penta-band operation in the folder-type mobile phone has been proposed. The antenna is simple in geometry and occupies a compact volume to allow it to be easily embedded inside the housing of the mobile phone to operate as an internal antenna. For both the open (in-use) and close (standby) states of...
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