摘要 |
PROBLEM TO BE SOLVED: To provide a transmission-reception loop antenna for wireless type input/output device, which is contrived so as to make radiated radio waves as large as possible and to properly conduct transmission and reception, and at the same time, to make stable motions even on the surface of a metallic desk, etc., with a simple constitution. SOLUTION: The transmission-reception loop antennas 16 and 17 of wireless input-output devices 14 and 15 constituted, so that the antennas 16 and 17 are positioned nearly perpendicular to the surfaces of desks 18 which are to be used.
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