Internal antenna apparatus

Details Internal antenna apparatus Internal antenna apparatus

2006-05-30

2009-02-17

Owens, Douglas W. (Department: 2821)

Communications: radio wave antennas

Antennas

Combined with diverse-type art device

C343S7000MS, C343S702000, C343S795000, C343S848000

Reexamination Certificate

active

07492321

ABSTRACT:
Disclosed is an internal antenna apparatus. The internal antenna allows feeding and ground connection to an antenna without power loss or degradation of performance in a structure in which a main printed circuit board is separated from the antenna. The internal antenna apparatus in a mobile communication terminal includes an antenna, a main printed circuit board, and a key pad printed circuit board, the antenna being spaced from the main printed circuit board a predetermined distance. A feeding pad is connected to the antenna, an antenna feeding part is connected between the main printed circuit board and the feeding pad, and a ground connection part connects a ground part of the main printed circuit board to a ground part of the key pad printed circuit board. The antenna feeding part includes a coaxial cable and a cable connection part. The antenna feeding part passes through a battery mounting space between the antenna and the main printed circuit board. The cable connection part is connected to the ground of the key pad printed circuit board. Accordingly, it is possible to prevent the degradation of radiation performance of the antenna.

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patent: 1 441 412 (2004-07-01), None
patent: 1 209 760 (2005-03-01), None

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