| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rotary joint for transmitting a signal and power which can surely prevent influence of leakage flux on an antenna element, without making the housing larger. SOLUTION: When an antenna substrates (25, 26) are attached outside of ferrite cores (15, 16) of the rotary side and the stationary side ferrite core units in the radial direction, the antenna boards (25, 26) are attached, while keeping a distance three times as large as an opposed gap t or longer between the ferrite cores (15, 16). When the antenna boards (25, 26) are attached inside in the radial direction, the antenna substrate (25, 26) are attached, while keeping a distance four times as large as the opposed gap t between the ferrite cores (15, 16).</p> |
