Provided are systems and methods of using of optical delay lines in RF imagers, e.g., Ultra-wideband (UWB) imagers. In an embodiment, a modulator can be configured to convert radio-frequency signals to optical signal. First and second optical delay lines delay respective first and second optical signals converted by the modulator, and a photodetector can convert the delayed optical signals to at least one electrical signal corresponding to at least one pixel of a radio frequency image. The disclosed systems and methods can also further form a radio-frequency image based on output from the photodetector. In still further embodiments, the photodetector can receive modulated optical signals from an array of optical delays. Also provided are related methods of using the disclosed systems and devices.

Provided are systems and methods of using of optical delay lines in RF imagers, e.g., Ultra-wideband (UWB) imagers. In an embodiment, a modulator can be configured to convert radio-frequency signals to optical signal. First and second optical delay lines delay respective first and second optical signals converted by the modulator, and a photodetector can convert the delayed optical signals to at least one electrical signal corresponding to at least one pixel of a radio frequency image. The disclosed systems and methods can also further form a radio-frequency image based on output from the photodetector. In still further embodiments, the photodetector can receive modulated optical signals from an array of optical delays. Also provided are related methods of using the disclosed systems and devices.

Disclosed is a radar for a vehicle configured to detect objects around a vehicle using an antenna, and the radar includes a substrate-integrated waveguide (SIW) in which a plurality of bent slots is formed, at least one processor electrically connected to the substrate-integrated waveguide, and a differential line electrically connecting the substrate-integrated waveguide to the at least one processor.

A vehicular radar sensing system includes a radar sensor configured to be disposed at a vehicle. The radar sensor includes a plurality of antennas that include a plurality of transmitting antennas that transmit radio signals and a plurality of receiving antennas that receive radio signals. The radar sensor provides radar data to a processor that processes the provided radar data to detect an object present in the field of sensing of the radar sensor. At least some antennas of the plurality of antennas include waveguides having T-shaped slots, with each T-shaped slot having a longitudinal portion and a transverse portion that extends transverse from the longitudinal portion, and with a width of the transverse portion being less than a length of the longitudinal portion.

A vehicular radar sensing system includes a radar sensor configured to be disposed at a vehicle. The radar sensor includes a plurality of antennas that include a plurality of transmitting antennas that transmit radio signals and a plurality of receiving antennas that receive radio signals. The radar sensor provides radar data to a processor that processes the provided radar data to detect an object present in the field of sensing of the radar sensor. At least some antennas of the plurality of antennas include waveguides having T-shaped slots, with each T-shaped slot having a longitudinal portion and a transverse portion that extends transverse from the longitudinal portion, and with a width of the transverse portion being less than a length of the longitudinal portion.

A radar sensor having at least one high-frequency component and at least one waveguide structure in the form of a plastic body provided with an electrically conductive surface layer. The radar sensor has at least one further plastic body provided with an electrically conductive surface layer, and the plastic bodies with their conductive surface layers are thermally bonded to one another.

An assortment of radar sensors in different variant embodiments. Each radar sensor has: a housing terminated by a radome, a circuit board that is equipped on the side facing away from the radome with at least one radio-frequency module, and an antenna structure on the side of the circuit board facing the radome. The housing is realized identically in all variant embodiments. The antenna structure has a planar antenna structure in at least one variant embodiment, and has a hollow conductor structure in at least one variant embodiment.

An assortment of radar sensors in different variant embodiments. Each radar sensor has: a housing terminated by a radome, a circuit board that is equipped on the side facing away from the radome with at least one radio-frequency module, and an antenna structure on the side of the circuit board facing the radome. The housing is realized identically in all variant embodiments. The antenna structure has a planar antenna structure in at least one variant embodiment, and has a hollow conductor structure in at least one variant embodiment.

A detection device for detecting an object under test includes a radar module, a waveguide element, and a first antenna element. The waveguide element is coupled to the radar module. The first antenna element is disposed on the waveguide element. The radar module generates a first electromagnetic incident wave. The first antenna element transmits the first electromagnetic incident wave toward the object. The first antenna element receives a first electromagnetic reflection wave from the object. The radar module processes the first electromagnetic reflection wave. The first electromagnetic incident wave and the first electromagnetic reflection wave are propagated through the waveguide element.

A radar device comprising: a printed circuit board (120), PCB, comprising a ground plane (1202), a radar sensor chip package (130) mounted on the PCB (120) and comprising a mm Wave radio frequency, RF, integrated circuit (1302) and a planar antenna structure (1304) configured as an antenna-in-package and oriented in a plane parallel to the ground plane (1202), wherein the mmWave RF integrated circuit (1302) is configured to output a mmWave signal (1360) to be transmitted by the planar antenna structure (1304), and a cavity (140), wherein the radar sensor chip package (130) is arranged in the cavity (140), the cavity (140) having an open side (1402), and the cavity (140) being defined by a conductive rear wall surface (1404) opposite the open side (1402), a pair of mutually opposite and conductive sidewall surfaces (1406), a conductive top surface (1408), and a conductive bottom surface (1410), wherein at least a portion of the conductive bottom surface (1410) is formed by at least a portion of the ground plane (1202) of the PCB (120), and wherein the sidewall surfaces, the top surface, and the bottom surfaces (1406, 1408,1410) each extends from the rear wall surface (1404) towards the open side (1402) of the cavity (140).