A radar level gauge comprising a signal propagation device, a dielectric filling member arranged in the signal propagation device, and a sealing arrangement for preventing tank content from escaping into the outside environment, wherein the dielectric filling member comprises a main body and a sealing arrangement comprising a first sealing portion. The radar level gauge further comprises a structural reinforcement element positioned above the first sealing portion.

This disclosure relates to a reactor including an energy source configured to generate a microwave in a direction of propagation. A reaction chamber is coupled to the energy source. A waveguide disposed in the reactor includes a window positioned at an angle, such as being misaligned, relative to the direction of propagation of the microwave such that an average dielectric constant experienced by the microwave increases over a region where the window occupies a greater fraction of a cross-sectional area of the waveguide. The window includes one or more dielectric materials that have respective dielectric constants that increase along the propagation direction in a first region that is adjacent to a first face of the window, and decrease in a second region that is adjacent to a second face of the window. The dielectric materials have a mass density that varies based on one or more pores formed therein.

This disclosure relates to a reactor including an energy source configured to generate a microwave in a direction of propagation. A reaction chamber is coupled to the energy source. A waveguide disposed in the reactor includes a window positioned at an angle, such as being misaligned, relative to the direction of propagation of the microwave such that an average dielectric constant experienced by the microwave increases over a region where the window occupies a greater fraction of a cross-sectional area of the waveguide. The window includes one or more dielectric materials that have respective dielectric constants that increase along the propagation direction in a first region that is adjacent to a first face of the window, and decrease in a second region that is adjacent to a second face of the window. The dielectric materials have a mass density that varies based on one or more pores formed therein.

A device for receiving and re-radiating electromagnetic signals. The device includes at least a wave guide with a first set of slot radiators for receiving electromagnetic signals, and a second set of slot radiators for transmitting electromagnetic signals generated on the basis of the received electromagnetic signals in the waveguide. The first set of slot radiators includes one or more slot radiators, and the second set of slot radiators includes one or more slot radiators. The device also relates to a method for receiving and re-radiating electromagnetic signals by a device including at least a waveguide, and the use of the device as a repeater of electromagnetic signals, for transferring electromagnetic signals through a structure, and/or as a building product.

A display device structure includes a back film, a display panel attached on the back film, and at least one antenna. The display panel defines a central area and a peripheral area on the back film. The antenna may be a 5G antenna, and is disposed on the peripheral area of the back film. The peripheral area of the back film is folded toward a back side of the display device structure. The display device may be disposed in a housing, which has a dielectric window located at a side surface thereof, such that each of the at least one antenna disposed on the folded peripheral area directly faces the dielectric window.

A display device structure includes a back film, a display panel attached on the back film, and at least one antenna. The display panel defines a central area and a peripheral area on the back film. The antenna may be a 5G antenna, and is disposed on the peripheral area of the back film. The peripheral area of the back film is folded toward a back side of the display device structure. The display device may be disposed in a housing, which has a dielectric window located at a side surface thereof, such that each of the at least one antenna disposed on the folded peripheral area directly faces the dielectric window.

A device for receiving and re-radiating electromagnetic signals. The device includes at least a waveguide with a first set of slot radiators for receiving electromagnetic signals, and a second set of slot radiators for transmitting electromagnetic signals generated on the basis of the received electromagnetic signals in the waveguide. The first set of slot radiators includes one or more slot radiators, and the second set of slot radiators includes one or more slot radiators. The device also relates to a method for receiving and re-radiating electromagnetic signals by a device including at least a waveguide, and the use of the device as a repeater of electromagnetic signals, for transferring electromagnetic signals through a structure, and/or as a building product.

A device for receiving and re-radiating electromagnetic signals. The device includes at least a waveguide with a first set of slot radiators for receiving electromagnetic signals, and a second set of slot radiators for transmitting electromagnetic signals generated on the basis of the received electromagnetic signals in the waveguide. The first set of slot radiators includes one or more slot radiators, and the second set of slot radiators includes one or more slot radiators. The device also relates to a method for receiving and re-radiating electromagnetic signals by a device including at least a waveguide, and the use of the device as a repeater of electromagnetic signals, for transferring electromagnetic signals through a structure, and/or as a building product.

A pressure barrier comprising a window with a first side and a second side, a main section comprising a length, a first end, and a second end opposite the first end, a first gradient compression section adjacent to the first end of the main section, and a second gradient decompression section adjacent to the second end of the main section is described. A pressure difference can be formed between the first and second side of the window. The window can comprise a dielectric material, where an average dielectric constant of the gradient compression section increases toward the main section, and an average dielectric constant of the gradient decompression section decreases away from the main section. A microwave propagating in a propagation direction can enter the pressure barrier at the gradient compression section and exit the pressure barrier through the gradient decompression section.

A pressure barrier comprising a window with a first side and a second side, a main section comprising a length, a first end, and a second end opposite the first end, a first gradient compression section adjacent to the first end of the main section, and a second gradient decompression section adjacent to the second end of the main section is described. A pressure difference can be formed between the first and second side of the window. The window can comprise a dielectric material, where an average dielectric constant of the gradient compression section increases toward the main section, and an average dielectric constant of the gradient decompression section decreases away from the main section. A microwave propagating in a propagation direction can enter the pressure barrier at the gradient compression section and exit the pressure barrier through the gradient decompression section.