Internal antenna for mobile communications device

Details Internal antenna for mobile communications device Internal antenna for mobile communications device

2005-06-07

2005-06-07

Corsaro, Nick (Department: 2684)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S083000, C455S082000, C455S097000, C455S575500, C455S280000, C343S7000MS, C343S702000

Reexamination Certificate

active

06904296

ABSTRACT:
A balanced antenna is provided for a mobile telephone which couples to the outputs from a balanced power amplifier stage without needing connection through a lossy conversion circuit. The balanced antenna comprises two radiating elements positioned opposite one another with the feed points positioned so that the radiating fields from the two elements superpose. A floating ground is also provided which reduces the effects of components located on the PCB under the antenna.

REFERENCES:
patent: 5614863 (1997-03-01), Pierro et al.
patent: 6130651 (2000-10-01), Yanagisawa et al.
patent: 6288682 (2001-09-01), Thiel et al.
patent: 6424300 (2002-07-01), Sanford et al.
patent: 6492952 (2002-12-01), Hu
patent: 6549169 (2003-04-01), Matsuyoshi et al.
patent: 2002/0018516 (2002-02-01), Mizuguchi
patent: 2004/0185916 (2004-09-01), Chang et al.
patent: WO 98/44588 (1998-10-01), None

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