A concealed radar imaging system includes a visible light mirror, a radar device positioned behind the visible light mirror, and a processing circuit coupled to the radar device. The visible light mirror includes a reflective layer configured to reflect visible light, and allow a radar signal to pass therethrough. The radar device is configured to transmit the radar signal, receive a reflection of the radar signal, and generate reflection data based on the reflected radar signal. The processing circuit is configured to control operation of the radar device, receive the reflection data from the radar device, and generate imaging data based on the transmitted radar signal and the reflection data.

Motor vehicle exterior part comprising: a wall comprising a face intended to be visible from outside the vehicle, the face being coated with a first layer; a second layer covering the first layer; and a heating element arranged between the two layers on the first layer, the first layer comprising an area of increased thickness and the heating element being arranged only on the area of increased thickness of the first layer.

An electromagnetic wave transmissive cover includes: a base made of a dielectric material and having transmissiveness to electromagnetic waves; and a reflection hindering layer laminated on at least one of two surfaces of the base in a travel direction of the electromagnetic waves, made of a dielectric material, having transmissiveness to the electromagnetic waves, and hindering reflection of the electromagnetic waves. A wavelength of each electromagnetic wave in the reflection hindering laver is referred to as λ2 and 2π/λ2 is set as a phase constant β.sub.2. An amount of deviation between a phase of a reflected wave reflected on the front interface of the reflection hindering layer in the travel direction and a phase of a reflected wave reflected on the rear interface is referred to as a phase deviation amount β. Thickness L.sub.2 of the reflection hindering layer is set to β/β.sub.2.

An antenna device and an electronic device are provided. The antenna device includes an antenna radome and an antenna module. The antenna radome includes a dielectric substrate and a resonance structure carried on the dielectric substrate. The antenna module is spaced apart from the antenna radome and configured to perform at least one of receiving and transmitting a radio frequency signal of a preset frequency band in a radiation direction which is directed toward the dielectric substrate and the resonance structure. The resonance structure has an in-phase reflection characteristic for the radio frequency signal of the preset frequency band, and a distance between a radiation surface of the antenna module and a surface of the resonance structure facing the antenna module is determined by a reflection phase difference of the antenna radome and a wavelength of the radio frequency signal of the preset frequency band transmitted in air.

A method for a radome structure having a heating and a light emitting function according to the present invention comprises forming a three dimensional shape with a film part comprising a film, and a light emitting circuit and a heating circuit printed on the film in a stack; cutting the film part, and integrating an upper cover, a lower cover, and the film part disposed between the upper and the lower cover, into one body using one of a bonding process or an injection-molding process.

A millimeter-wave radar cover housing a millimeter-wave radar including an antenna and an electronic circuit configured to drive the antenna includes: a first site provided in front of the millimeter-wave radar to protect the millimeter-wave radar and transmit millimeter waves emitted from the antenna; and a second site including a housing space in which the antenna and the electronic circuit except for the first site are housed. The first site is made of a stacked structural body obtained by stacking at least one layer of a first constituent material having a negative relative permittivity in the frequency band of the millimeter waves and a second constituent material having a positive relative permittivity in the frequency band of the millimeter waves, and the stacked structural body is curved in a convex shape in a direction centered at an emission source of the millimeter electromagnetic waves and departing from the emission source.

An antenna apparatus and an electronic device are provided. The antenna apparatus includes an antenna module and an antenna radome. The antenna module is configured to receive and emit a radio frequency (RF) signal of a preset frequency band toward a preset direction range. The antenna radome is spaced apart from the antenna module, and located within the preset direction range. The antenna radome includes a substrate and a resonant structure carried on the substrate. The substrate is configured to allow a RF signal of a first preset frequency band to pass through, the resonant structure is configured to adjust a passband width of the substrate to the RF signal, to make the antenna radome allow a RF signal of a second frequency band to pass through. A bandwidth of the second frequency band is greater than that of the first frequency band.

A radar sensor for reception of radar waves. The radar sensor includes at least one control unit and at least one circuit board. The at least one circuit board includes a substrate and a structure that is arranged on the substrate and has a multiplicity of metallization structures. The radar sensor is configured to be arranged on a radome in such a manner that the substrate is arranged on a side facing away from the radome and the structure is arranged between the radome and the substrate. The at least one control unit is arranged on a side of the substrate facing away from the radome and is in communicative connection with the at least one circuit board. At least one opening is made in the structure and only ambient medium is present between the radome and the at least one opening.

The present invention relates to: a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present invention provides an antenna module comprising: an antenna array for radiating beams through a top surface thereof; a dielectric disposed to be spaced apart from the top surface of the antenna array by a first preset length; a first reflector comprising a metallic material, and disposed to be spaced apart from the bottom surface of the dielectric by a second preset length; and a second reflector comprising a metallic material and disposed in the partial region of the bottom surface, of the dielectric, which faces the top surface of the antenna array.

Object: A plurality of problems of an electromagnetic wave transmissive cover to be installed in an electromagnetic wave irradiation direction of a sensor using an electromagnetic wave are simultaneously eliminated. Resolution means: An electromagnetic wave transmissive cover 1 is a member to be installed in an electromagnetic wave irradiation direction of a millimeter wave radar 100 using an electromagnetic wave, and includes a colored resin member 3, a transparent resin member 5, and a transparent heater film 7. The transparent resin member 5 is provided on an opposite side to the millimeter wave radar 100 of the colored resin member 3. The transparent heater film 7 is provided on the opposite side to the millimeter wave radar 100 of the colored resin member 3, includes a wiring pattern formed by copper plating or etching, and has electromagnetic wave transmissivity.