| 摘要 |
<p>A radio-wave sealing device has a choke unit provided in a leakage wave transmission path of equipment generating high-frequency electromagnetic waves. The choke unit has a gutter wall (29) corresponding to a ground conductor, a large number of strip conductors (30) positioned with a width of a at a pitch P, and a gutter base (31), to reduce the propagation of radio waves in the longitudinal direction of the gutter. In addition, since the charateristic impedance of part of the choke varies in a zone shorter than lambda/4 of the frequency being used, the depth and width of the gutter can be reduced to less than lambda/4. </p> |
