Methods and apparatus for a phase array radar to generate fan beams with curve of constant phase with spoiling in u and/or v space. In embodiments, beam pattern weighting is phase-only and applicable to transmit and receive. In embodiments, the beam pattern accounts for the apparent curvature of the horizon in uv space.

A radar system includes a transmit front end device including a transmit planar component, and a receive front end device including a receive planar component. Each of the transmit planar component and the receive planar component includes a first end, a second end, a cavity space and a linear array of antennas. The cavity space is bounded by beam ports along a first side of the cavity space and by array ports along a second side of the cavity space. The cavity space is in operative communication with the beam ports and with the array ports to form a Rotman lens. A linear array of antennas is located along the second end of the planar component. The transmit planar component and receive planar component are arranged such that the linear array of antennas of the transmit planar component and the linear array of antennas are perpendicular to one another.

A radar system includes a transmit front end device including a transmit planar component, and a receive front end device including a receive planar component. Each of the transmit planar component and the receive planar component includes a first end, a second end, a cavity space and a linear array of antennas. The cavity space is bounded by beam ports along a first side of the cavity space and by array ports along a second side of the cavity space. The cavity space is in operative communication with the beam ports and with the array ports to form a Rotman lens. A linear array of antennas is located along the second end of the planar component. The transmit planar component and receive planar component are arranged such that the linear array of antennas of the transmit planar component and the linear array of antennas are perpendicular to one another.

A radar system for surroundings detection of a motor vehicle. The radar system includes an antenna for sending and/or receiving radar signals, a circuit board including at least one high-frequency component and an element for sending and/or receiving high-frequency signals. At least one fastening element is situated on/at the circuit board. The antenna includes at least one connecting element. The connecting element interacts with the fastening element in such a way that the antenna is fastenable and at the same time positionable on the circuit board by being pushed onto the at least one fastening element.

Waveguide and/or antenna structures for use in RADAR sensor assemblies and the like. In some embodiments, an antenna module may comprise a waveguide and an antenna structure, such as one or more slots/slits operably coupled with the waveguide groove. The antenna structure may be positioned and configured to deliver electromagnetic radiation from the waveguide therethrough. A plurality of tapering surfaces may be formed along the antenna structure. Each of the plurality of tapering surfaces may be formed so as to alternate between opposing sides of the antenna structure and be spaced apart from each adjacent tapering surface of the plurality of tapering surfaces.

Waveguide and/or antenna structures for use in RADAR sensor assemblies and the like. In some embodiments, an antenna module may comprise a waveguide and an antenna structure, such as one or more slots/slits operably coupled with the waveguide groove. The antenna structure may be positioned and configured to deliver electromagnetic radiation from the waveguide therethrough. A plurality of tapering surfaces may be formed along the antenna structure. Each of the plurality of tapering surfaces may be formed so as to alternate between opposing sides of the antenna structure and be spaced apart from each adjacent tapering surface of the plurality of tapering surfaces.

The description below relates to a method for a radar sensor. According to one example implementation, the method comprises receiving configuration data and storing the received configuration data in a first radar chip having multiple transmission channels. The configuration data contain multiple parameter sets for a chirp sequence and association information representing an association of a respective chirp of the chirp sequence with one of the multiple parameter sets. The method further comprises receiving a trigger signal in the first radar chip. The trigger signal indicates the beginning of a respective chirp of the chirp sequence. The transmission channels mentioned are repeatedly configured in sync with the trigger signal, wherein for each chirp of the chirp sequence the transmission channels are configured according to the respective association information. The method further comprises receiving an RF oscillator signal representing the chirp sequence, and supplying the RF oscillator signal to the accordingly configured transmission channels.

A radar apparatus for a motor vehicle including a transceiver device configured to transmit radar radiation and to receive the radar radiation reflected from objects in an environment of the radar apparatus and to generate a measurement signal, and a protection device configured to protect the transceiver device from external influences. The thickness of the protective device is at least in sections less than 10% of a wavelength of the radar radiation passing through the protective device.

A radar apparatus for a motor vehicle including a transceiver device configured to transmit radar radiation and to receive the radar radiation reflected from objects in an environment of the radar apparatus and to generate a measurement signal, and a protection device configured to protect the transceiver device from external influences. The thickness of the protective device is at least in sections less than 10% of a wavelength of the radar radiation passing through the protective device.

An electronically steerable phased array and switching network connected to an FMCW radar transceiver to enable a low-cost monopulse tracking system that covers a wide field of regard using electronic beam steering. In a first mode, beamformer integrated circuits (BFICs) at each element in the array are switched synchronously with transmit/receive (T/R) switches located at the subarray level. This allows the entire aperture to be switched between transmission and reception, enabling the FMCW radar transceiver to be operated in a pulsed configuration. In a second mode, a portion of the T/R switches at the subarray level and all of the connecting BFICs at the element level are fixed in either transmitting or receiving mode, allowing separate portions of the aperture to concurrently transmit or receive. The arrangement of transmitting and receiving subarrays can be dynamically reconfigured to allow for accurate bearing and azimuth estimation using alternating monopulse.