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.

Provided is a waveguide tube slot antenna (A), including: a waveguide tube (10) having a transverse section having a rectangular shape in each part of a waveguide (2) in an extending direction thereof; and a plurality of radiating slots (3) arranged in the waveguide tube (10) at predetermined intervals, in which: the waveguide tube (10) includes a first waveguide tube forming member (11) and a second waveguide tube forming member (12) each having the transverse section having a shape with an end, the first waveguide tube forming member (11) and the second waveguide tube forming member (12) being configured to define the waveguide (2) by being coupled to each other; and the first waveguide tube forming member (11) is formed to have a flat shape and includes the plurality of radiating slots (3).

Provided is a waveguide tube slot antenna (A), including: a waveguide tube (10) having a transverse section having a rectangular shape in each part of a waveguide (2) in an extending direction thereof; and a plurality of radiating slots (3) arranged in the waveguide tube (10) at predetermined intervals, in which: the waveguide tube (10) includes a first waveguide tube forming member (11) and a second waveguide tube forming member (12) each having the transverse section having a shape with an end, the first waveguide tube forming member (11) and the second waveguide tube forming member (12) being configured to define the waveguide (2) by being coupled to each other; and the first waveguide tube forming member (11) is formed to have a flat shape and includes the plurality of radiating slots (3).

A current collector has a sliding contact for making electrical contact with a conductor profile of a conductor line and an antenna for insertion into a longitudinal slot, running in a longitudinal direction of the conductor line. The sliding contact and the antenna can be moved jointly towards the conductor profile in a feed direction by a feed device of the current collector. A conductor line has a conductor profile running in a longitudinal direction, having an elongate cavity and a longitudinal slot adjoining the cavity and running in the longitudinal direction. The conductor profile has at least one sliding contact groove for the sliding contact of the current collector. The antenna is mounted on the current collector so as to be moveable with respect to the sliding contact in the feed direction, and the conductor profile has at least one spacer slide surface running in the longitudinal direction, for a spacer slide of the current collector.

An array antenna. In some embodiments, the array antenna includes a base plate having a surface including a plurality of grooves, a plurality of circulator carriers on the base plate, a plurality of cover strips on the circulator carriers, a plurality of circulators, and a plurality of threaded fasteners. The circulator carriers and the cover strips may be secured to the base plate by the threaded fasteners. Each of the circulators may be coplanar with the base plate. Materials in the array antenna may be selected to avoid galvanic corrosion.

An electronic device may include a conductive housing with a rear wall and a sidewall. A display may be mounted to the sidewall and may include a conductive display structure separated from the sidewall by a slot. An antenna arm may be interposed between the conductive display structure and the rear wall. A first inductor may couple the conductive display structure to the housing and may compensate for a distributed capacitance between the antenna arm and the conductive display structure. A second inductor may couple the antenna arm to the rear wall and may compensate for a distributed capacitance between the antenna arm and the rear wall. A speaker may be co-located with the antenna. A third inductor may couple the antenna arm to the rear wall to allow antenna currents to bypass the speaker.

An electronic device may include a conductive housing with a rear wall and a sidewall. A display may be mounted to the sidewall and may include a conductive display structure separated from the sidewall by a slot. An antenna arm may be interposed between the conductive display structure and the rear wall. A first inductor may couple the conductive display structure to the housing and may compensate for a distributed capacitance between the antenna arm and the conductive display structure. A second inductor may couple the antenna arm to the rear wall and may compensate for a distributed capacitance between the antenna arm and the rear wall. A speaker may be co-located with the antenna. A third inductor may couple the antenna arm to the rear wall to allow antenna currents to bypass the speaker.

A liquid crystal cell includes a TFT substrate including a first dielectric substrate, TFTs supported by the first dielectric substrate, and patch electrodes electrically connected to the TFTs, a slot substrate including a second dielectric substrate and a slot electrode including slots and supported by the second dielectric substrate, and a liquid crystal layer sandwiched between the TFT substrate and the slot substrate that are disposed such that the patch electrodes and the slot electrode face each other. Liquid crystal molecules included in the liquid crystal layer are oriented in all azimuthal angle directions in a state in which voltage is not applied between the patch electrodes and the slot electrode.

A liquid crystal cell includes a TFT substrate including a first dielectric substrate, TFTs supported by the first dielectric substrate, and patch electrodes electrically connected to the TFTs, a slot substrate including a second dielectric substrate and a slot electrode including slots and supported by the second dielectric substrate, and a liquid crystal layer sandwiched between the TFT substrate and the slot substrate that are disposed such that the patch electrodes and the slot electrode face each other. Liquid crystal molecules included in the liquid crystal layer are oriented in all azimuthal angle directions in a state in which voltage is not applied between the patch electrodes and the slot electrode.

Antenna assemblies, such as RADAR or other sensor antenna assemblies for vehicles. In some embodiments, the assembly may comprise an antenna block defining a waveguide groove on a first side of the antenna block with opposing rows of posts positioned opposite from one another. A plurality of antenna slots may be positioned in the waveguide groove and may extend from the first side of the antenna block to a second side of the antenna block opposite the first side. A PCB or other means for generating electromagnetic energy may be coupled with the antenna block and be configured to feed the waveguide groove with an EM signal. The plurality of antenna slots formed in the antenna block may be configured to radiate electromagnetic energy from the antenna block.