STRUCTURE WITH SHIELD HOUSING CAPABLE FORMING ANTENNA AND STORING WHOLE OR PART OF ELECTRONIC CIRCUIT OF, SPECIALLY, SMALL-SIZED PORTABLE UNIT

摘要

PROBLEM TO BE SOLVED: To actualize an antenna which can easily be arranged and mounted in a small-sized portable communication unit like a wristwatch. SOLUTION: The substantially rectangle extension member (20) that the structure which form an antenna (10) for a small-sized portable unit like a wristwatch has is arranged at a specific distance from a ground surface and short-circuited to the ground surface through one end (20b) between its ends (20a and 20b), and the other end (20a) is free. This structure (10) has a container (11) which contains at least a lid (12), a bottom part (14), and a side wall (13b) and form an important part of the ground surface by having the extension member (20) arranged facing the side wall; and this container (11) form a shield cover capable of storing an electronic circuit of the portable unit and/or all or some of other components. This invention is concerned in a wristwatch having the antenna structure built in.