| 摘要 |
The structure described forms a PIFA antenna (10) and a shield container (11) which can contain electric circuits, particularly a transceiver associated with the antenna. It is arranged to be incorporated in a portable electronic apparatus of small volume, for example a wristwatch. In order to be as far away as possible from a body located under the apparatus and capable of absorbing or disturbing part of the radiation, the antenna (10) is arranged in the top part of the structure. The cover (14) of the case (11) includes a substantially plane external surface and an indentation (17) in a peripheral zone of the cover. The radiating element (20) of the antenna extends in the plane of said external surface, above said indentation whose bottom surface (18) forms the antenna's ground plane.
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