A radar system is generated by a process including generating a first substrate layer adjacent to a ground plane of a patch antenna array in the radar system, etching an opening in the substrate layer, inserting a mechanically-locking foot of a threaded insert into the opening, adding a second substrate layer adjacent to the first substrate layer to embed the threaded insert, applying a thermal coupling between a heat sink layer and the second substrate layer of the radar system and screwing a screw through the heat sink layer and into the threaded insert to adhere the heat sink layer to the radar system. Such a radar system can enable the attachment of the heat sink layer to the radar system in a removable fashion such that the heat sink layer can be removed by removing the screw and repairs can be done without damaging respective layers.

According to an example, an electronic device includes a component, a supply line providing a supply voltage, a transistor with a control input, a linear first control loop, and a non-linear second control loop. The transistor outputs an output voltage to the component depending on a signal applied to the control input. The linear first control loop includes an ADC to convert an analog output voltage level into a digital measurement signal, a controller to generate a digital control signal for the transistor depending on the digital measurement signal, and a DAC to convert the digital control signal into a first analog control signal. The non-linear second control loop is configured to generate a second analog control signal depending on the analog output voltage level. The second analog control signal is superimposed with the first analog control signal and the combined control signals are fed to the control input of the transistor.

The present disclosure relates to an apparatus and method for synthetically making an ultra-wide imaging bandwidth in millimeter-wave frequencies, resulting in improved image resolutions to values previously unattained. The synthetic approach sums up a number of available sub-bands to build an unavailable ultra-wideband system. Each sub-band contains a transceiver unit which is optimized for operation within that specific sub-band. The number and position of the sub-bands can be adjusted to cover any frequency range as required for the specific application.

The present disclosure relates to an apparatus and method for synthetically making an ultra-wide imaging bandwidth in millimeter-wave frequencies, resulting in improved image resolutions to values previously unattained. The synthetic approach sums up a number of available sub-bands to build an unavailable ultra-wideband system. Each sub-band contains a transceiver unit which is optimized for operation within that specific sub-band. The number and position of the sub-bands can be adjusted to cover any frequency range as required for the specific application.

A method and system are provided for generating a trigger signal from a radar signal received over the air from a radar under test. The method includes detecting power of the radar signal received from the radar under test at a radio frequency (RF) power detector, the radar signal including multiple bursts of RF energy in a burst pattern; identifying repeating radar frames from the burst pattern using the detected power of the radar signal, each radar frame having at least one burst; and creating trigger signals corresponding to the radar frames, respectively, by synchronizing to the at least one burst in each radar frame.

A transceiver includes first electrical channels and second electrical channels. The first electrical channels are configured to transfer electromagnetic signals to first air waveguides. Each of the first electrical channels extend from a transmitter along an exterior surface of a chip package that supports the transmitter and terminate at first transitions on the exterior surface. Each of the first plurality of air waveguides are attached to the exterior surface and overlay one of the first transitions. The transceiver also includes second electrical channels configured to transfer second electromagnetic signals from second air waveguides. Each of the second electrical channels extend from a receiver along the exterior surface of the chip package that supports the receiver and terminate at second transitions on the exterior surface. Each of the second air waveguides are attached to the exterior surface and overlay one of the second transitions.

Systems, methods, and computer-readable media are described for combining digital and analog beamsteering in a channelized antenna array. In some examples, a method can include receiving one or more signals at each of a plurality of groups of antenna elements, each group of antenna elements defining a respective channel from a plurality of channels, and steering, by each respective channel and using analog steering, the one or more signals in a respective direction to yield a steered analog signal pattern. The method can further include converting the steered analog signal pattern associated with each respective channel into a respective digital signal and, based on the respective digital signal, generating, using digital steering, digital signal patterns steered within the steered analog signal pattern associated with the respective digital signal.

Systems, methods, and computer-readable media are described for combining digital and analog beamsteering in a channelized antenna array. In some examples, a method can include receiving one or more signals at each of a plurality of groups of antenna elements, each group of antenna elements defining a respective channel from a plurality of channels, and steering, by each respective channel and using analog steering, the one or more signals in a respective direction to yield a steered analog signal pattern. The method can further include converting the steered analog signal pattern associated with each respective channel into a respective digital signal and, based on the respective digital signal, generating, using digital steering, digital signal patterns steered within the steered analog signal pattern associated with the respective digital signal.

Embodiments of a vehicular radar system are presented herein. One embodiment comprises a first circuitry layer including a first radar subsystem for a first frequency band, the first radar subsystem including a first end-fire antenna. The vehicular radar system also includes a second circuitry layer stacked on or under the first circuitry layer, the second circuitry layer including a second radar subsystem for a second frequency band, the second radar subsystem including a second end-fire antenna. In this embodiment, one or more components of the vehicular radar system are shared between the first and second radar subsystems.

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 layer 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.