| 摘要 |
The antenna comprises at least one waveguide having a rectangular section (24) and a cylinder (21) having an opening along a helical line, said cylinder having a rotary movement relative to the waveguide placed inside said cylinder, the waveguide being open opposite the inner face of said cylinder, which forms a microwave short-circuit to close the guide, characterised in that two cavities (62, 63) are provided on either side of the guide, parallel to same, along the whole length of same, the openings of the cavities being substantially in the plane of the opening (61) of the guide. The invention applies, for example, to the detection of concealed objects carried by persons, in particular dangerous objects. |
