The present disclosure relates to the technical field of microwave absorption, and in particular, to a multi-layer wave absorber structure and use thereof. The multi-layer wave absorber structure has a sandwich structure, and an intermediate layer of the sandwich structure is an electromagnetic loss-free dielectric layer. The electromagnetic loss-free dielectric layer includes a vacuum layer, an air layer, a paraffin layer, or a polytetrafluoroethylene layer. The added electromagnetic loss-free dielectric layer enhances impedance matching by modulating phases of electromagnetic waves, such that loss of the electromagnetic waves in a composite wave absorbing layer of the multi-layer wave absorber structure is enhanced, and an effective absorption bandwidth is further improved. The multi-layer wave absorber structure provided by the present disclosure has higher universality and operability, and has an effect of improving an effective absorption bandwidth for wave absorbing devices made of various composite wave absorbing materials.

The invention relates to an arrangement with a holder and a housing for an electronic assembly, in particular for a radar sensor, and an assembly with such an arrangement, in particular the radar sensor. Further components of the electronic assembly can be attached to the holder, for example a circuit carrier with an electronic circuit arrangement. The housing or a part of the housing is molded onto the holder, and the holder has an outer contour which is wholly or partially complementary to an inner contour of the housing, in particular of a part of the housing.

An enclosure is constructed of multiple sections joined end-to-end at joints. Each joint includes a waveguide flange at one end of one of the sections. The waveguide flange defines a waveguide channel that is configured proportionally to a predetermined electromagnetic frequency. Each joint also includes a shield flange at one end of another section joined to the waveguide flange. The shield flange defines a shield surface for the waveguide channel.

A conductive housing includes: a first blocking unit that is formed with a first conductive material in a box-like shape having an opening portion; and a second blocking unit including a first electromagnetic wave blocking portion that is formed with a second conductive material and extends in a first direction and a second direction orthogonal to the first direction, and a second electromagnetic wave blocking portion that is formed with a third conductive material, extends in the first direction and the second direction, and is disposed to face the first electromagnetic wave blocking portion at a distance. The second blocking unit is disposed in the opening portion, the first blocking unit is electrically connected to the first electromagnetic wave blocking portion and the second electromagnetic wave blocking portion, and the first blocking unit and the second blocking unit form a space inside.

The purpose of the present disclosure is to provide a device in which a microwave-blocking container is provided inside a vacuum container, and which makes it possible to more easily and more definitively block microwaves. A device according to the present disclosure is equipped with a housing, a vacuum container provided inside the housing, and a microwave-blocking container which accommodates an object to be treated and is provided inside the vacuum container, and is characterized in that the microwave-blocking container has a microwave radiation part and an opening which blocks microwaves and allows a gas inside the microwave-blocking container to flow into the vacuum container.