PIFA antenna apparatus for mobile communications terminals

Communications: radio wave antennas – Antennas – With radio cabinet

Reexamination Certificate

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C343S7000MS, C343S767000

Reexamination Certificate

active

07102575

ABSTRACT:
A PIFA antenna device is provided which includes an HF input/output and two antenna surfaces respectively having a contact with the ground of a mobile communication terminal. The first antenna surface is configured for two independent frequencies and the second antenna surface is configured for a third independent frequency. Only the first antenna surface is connected to the HF input/output and the second antenna surface is arranged in a contactless manner with respect to the first antenna surface, whereby an electromagnetic coupling occurs between both antenna surfaces.

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patent: 6195048 (2001-02-01), Chiba et al.
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patent: WO 98/44588 (1998-10-01), None
patent: WO 99/28990 (1999-06-01), None

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