Aspects of the subject disclosure may include a generator that facilitates generation of an electromagnetic wave, a core, and a waveguide that facilitates guiding the electromagnetic wave towards the core to induce a second electromagnetic wave that propagates along the core. The core and/or the waveguide can be configured to reduce radiation loss of the second electromagnetic wave, propagation loss of the second electromagnetic wave, or a combination thereof. Other embodiments are disclosed.

The present invention provides a radar device capable of reducing processing load while arraying receiving antennas in two directions. In the present invention, a transmitting unit (transmitting antenna) transmits an electromagnetic wave. A plurality of receiving antennas 108 receive a reflected wave from an object which reflects the electromagnetic wave, and convert the reflected wave into a first signal Sig1. A plurality of receiving circuits 520 are respectively connected to the receiving antennas 108 and generate a second signal Sig2 from the first signal Sig1. A signal processing unit 103 processes the second signal Sig2. The plurality of receiving antennas 108 are arrayed in a first direction and a second direction crossing the first direction. The signal processing unit 103 switches the combination of the second signal Sig2 that is processed, for each frame indicating a time period extending from when the transmitting antenna transmits the electromagnetic wave to when the signal processing unit 103 processes the second signal Sig2.

An interconnection assembly for a switching device includes at least one cable with a core having a first dielectric material at least partially surrounded by a second dielectric material having a refractive index different from the first dielectric material. A first connector part is positioned with respect to an antenna and includes a fan-out element and at least one hollow conductor arranged between the antenna and the core of the cable wherein the hollow conductor extends in the fan-out element to guide a signal between the antenna and the core of the cable, wherein the hollow conductor includes a first port aligned with the antenna and a second port, and when. assembled is in communication with the core of the cable, At least one second connector part is interconnected to position the core of the cable in a connected position relative to the second port of the hollow conductor.

An electronic device includes a housing, an electrically conductive layer and millimeter-wave (mmw) circuitry configured to emit a mmw signal. The mmw circuitry is arranged in the housing and on a first side of the electrically conductive layer. The housing comprises at least one portion configured as a dielectric lens to refract the mmw signal at least partially outside the housing towards a second side opposite to the first side of the electrically conductive layer.

An antenna system for a vehicle includes a signal processor configured to perform signal processing of a transmission signal; a signal converter configured to convert an output signal of the signal processor between analog and digital; a beam selector configured to form a desired form of a radio wave radiation pattern; and a variable lens configured to cause an output signal of the beam selector to have a directivity in a desired direction through a change in shape according to an electrical signal applied to the variable lens.

An antenna system for a vehicle includes a signal processor configured to perform signal processing of a transmission signal; a signal converter configured to convert an output signal of the signal processor between analog and digital; a beam selector configured to form a desired form of a radio wave radiation pattern; and a variable lens configured to cause an output signal of the beam selector to have a directivity in a desired direction through a change in shape according to an electrical signal applied to the variable lens.

A hemispherical antenna includes a ground plane having a circular waveguide. A dielectric lens is coupled to the ground plane. The dielectric lens has a tapered end opposite to an end coupled to the ground plane. The dielectric lens does not include a parasitic crossed-dipole element. The hemispherical antenna is scalable in size for operation at higher operating frequencies.

A hemispherical antenna includes a ground plane having a circular waveguide. A dielectric lens is coupled to the ground plane. The dielectric lens has a tapered end opposite to an end coupled to the ground plane. The dielectric lens does not include a parasitic crossed-dipole element. The hemispherical antenna is scalable in size for operation at higher operating frequencies.

A planar radio frequency filter is described, comprising a frequency selective surface (FSS) applied to a substrate. The filter blocks the transmission of electromagnetic waves in at least two independent radio frequency bands. The FSS comprises a periodic array of multipole inclusions with skewed or forked poles to increase packing density. The inclusions comprise four or six primary poles to generate the lower frequency resonance and an additional four or six secondary poles to generate the higher frequency resonance. The secondary inclusions are located between the primary inclusions to tune the higher resonance frequency. The FSS incorporates overlapping parallel conducting segments that overlap to provide an inductive-capacitive path between adjacent inclusions.

A planar radio frequency filter is described, comprising a frequency selective surface (FSS) applied to a substrate. The filter blocks the transmission of electromagnetic waves in at least two independent radio frequency bands. The FSS comprises a periodic array of multipole inclusions with skewed or forked poles to increase packing density. The inclusions comprise four or six primary poles to generate the lower frequency resonance and an additional four or six secondary poles to generate the higher frequency resonance. The secondary inclusions are located between the primary inclusions to tune the higher resonance frequency. The FSS incorporates overlapping parallel conducting segments that overlap to provide an inductive-capacitive path between adjacent inclusions.