Abstract: A three-dimensional (3D) radar device for 3D angle detection is illustrated. The 3D radar device has M transmitting antennae, N receiving antennae and a radio frequency integrated circuit (RFIC). The M transmitting antennae is controlled to be form beamforming radiation patterns in different transmitting and receiving period periods, wherein the beamforming radiation patterns are formed on a first plane, and the beamforming radiation patterns in the different transmitting and receiving period periods scan a second plane being vertical to the first plane. The N receiving antennae form N receiving radiation patterns at the same time to cover a third plane being vertical to the first plane and the second plane. The RFIC has an antenna phase adjuster to adjust phases of the M transmitting antennae, wherein M and N are integer larger than or equal to 2.

Abstract: An angle estimating method applied in a radar system. The radar system includes a first antenna array including M antennas. The angle estimating method includes steps of obtaining a plurality of beamforming weighting vectors; receiving signal from M antennas and forming a received vector; performing an augment operation on the received vector and obtaining an augmented received vector; computing correlation between the augmented received vector and the plurality of beamforming weighting vectors and obtaining a plurality of results accordingly; and determining an angle-of-arrival of an object according to the plurality of results.

Abstract: An electronic device is provided, which includes a circuit board and a bridge-shaped circuit board structure. The circuit board includes a first circuit board edge, a second circuit board edge, a first coupling unit, and a second coupling portion. The first coupling unit is located on the first circuit board edge. The second coupling unit is located on the second circuit board edge. The bridge-shaped circuit board structure includes a first supporting portion, a second supporting portion, a planar portion, a third coupling unit and a fourth coupling portion. The first supporting portion is disposed on the first planar portion edge. The second supporting portion is disposed on the second planar portion edge. A receiving space is formed between the planar portion and the circuit board.

Abstract: A radar antenna system comprises a plurality of transmitting sub-arrays; a plurality of receiving sub-arrays; and a transceiving control unit coupled to the plurality of transmitting sub-arrays and the plurality of receiving sub-arrays, configured to control the plurality of transmitting sub-arrays and the plurality of receiving sub-arrays, such that the radar antenna system selectively operates in one of an amplitude-comparison mono-pulse mode and a phase-comparison mono-pulse mode.

Abstract: An angle estimating method applied in a radar system includes receiving a first signal and a second signal reflected from a target object via a first antenna and a second antenna; obtaining a first phase difference and at least one virtual phase difference, where the first phase difference is a phase difference between the first antenna and the second antenna; and obtaining a direction of arrival (DOA) of the target object according to the first phase difference and the at least one virtual phase difference.

Abstract: A radar and a method for enabling array antenna are proposed. The radar includes a transceiver, a multi-input multi-output (MIMO) array antenna, a phased array antenna, and a controller. The MIMO array antenna is coupled to the transceiver and includes first transmitting sub-arrays and receiving sub-arrays. The phased array antenna is coupled to the transceiver and includes second transmitting sub-arrays and the receiving sub-arrays. The controller is coupled to the transceiver and configured to to enable the first transmitting sub-arrays to form the MIMO array antenna or enable the second transmitting sub-arrays to form the phased array antenna.

Abstract: An angle estimating method applied in a radar system. The radar system includes a first antenna array including M antennas. The angle estimating method includes steps of obtaining a plurality of beamforming weighting vectors; receiving signal from M antennas and forming a received vector; performing an augment operation on the received vector and obtaining an augmented received vector; computing correlation between the augmented received vector and the plurality of beamforming weighting vectors and obtaining a plurality of results accordingly; and determining an angle-of-arrival of an object according to the plurality of results.

Abstract: A pre-warning method utilized in a vehicle radar system includes a first and a second millimeter-wave detection modules detecting dynamic information of a plurality of first targets and a plurality of second targets corresponding to the vehicle radar system in different dimensions of an area and obtaining a first and a second detection results, determining whether there are identical targets within the plurality of first targets and the plurality of second targets according to the first and the second detection results, determining 3-D dynamic information of at least an identical target after determining that the plurality of first targets and the plurality of second targets include the at least an identical target, and determining whether to trigger an alarm signal according to the 3-D dynamic information of the at least an identical target.

Abstract: An array antenna forms a main beam, and the main beam is toward a beam direction. The array antenna includes a plurality of radiating elements with a plurality of central line segments, where the plurality of radiating elements are arranged along a straight line, and the straight line is connecting the plurality of central line segments; and a plurality of meanders connecting the plurality of radiating elements; where the array antenna is disposed on a first plane, the beam direction has a nonzero deviating angle with a normal direction of the first plane, and the normal direction is perpendicular to the first plane.

Abstract: A radio-frequency (RF) system includes a substrate; a plurality of antenna strings, formed on a first plane of the substrate, each comprising a plurality of radiating units connected in a sequence, wherein the plurality of antenna strings are classified into a first group and a second group; a plurality of wires, formed on a second plane of the substrate, for transmitting RF signals; a plurality of connecting units, disposed in the substrate, for coupling the plurality of wires and antenna strings of the second group; a first RF processing module, for transmitting or receiving RF signals via antenna strings of the first group, and a second RF processing module, for coupling to the antenna strings of the second group through the plurality of wires and the plurality of connecting units, so as to transmit or receive RF signals via the antenna strings of the second group.

Abstract: An alarm system for a vehicle comprises a sensor disposed on an installation plane of the vehicle, configured to emit a plurality of frequency-modulated continuous waveform (FMCW) signals toward a reverse plane of the installation plane and receiving reflected signals of the plurality of FMCW signals, to detect information of a plurality of targets within a specified range corresponding to the vehicle; an alarm being controlled to generate an alarm signal; and a control module coupled to the sensor and the alarm, capable of receiving the information of the plurality of targets detected by the sensor; determining a vehicle information of the vehicle in relation to an external environment according to the information of the plurality of targets; and determining movement statuses of the plurality of targets in relation to the vehicle according to the vehicle information and the information of the plurality of targets, and accordingly controlling the alarm.

Abstract: A pre-warning method utilized in a vehicle radar system is disclosed. The vehicle radar system includes a frequency-modulation continuous wave (FMCW) module, a data transceiver module and an antenna module, and the FMCW module and the data transceiver module share the antenna module. The pre-warning method includes the FMCW module utilizing the antenna to transmit and receive beat signals to detect dynamic information of a target corresponding to the vehicle radar system and obtain a first detection result, and receiving and broadcasting data to broadcast the first detection result via the data transceiver module and the antenna module, or receive a detection result broadcasted by another vehicle radar system and combine the detection result with the first detection result to perform real-time target tracking and alarm.

Abstract: An angle estimating method applied in a radar system includes receiving a first signal and a second signal reflected from a target object via a first antenna and a second antenna; obtaining a first phase difference and at least one virtual phase difference, where the first phase difference is a phase difference between the first antenna and the second antenna; and obtaining a direction of arrival (DOA) of the target object according to the first phase difference and the at least one virtual phase difference.

Abstract: An array antenna forms a main beam, and the main beam is toward a beam direction. The array antenna includes a plurality of radiating elements with a plurality of central line segments, where the plurality of radiating elements are arranged along a straight line, and the straight line is connecting the plurality of central line segments; and a plurality of meanders connecting the plurality of radiating elements; where the array antenna is disposed on a first plane, the beam direction has a nonzero deviating angle with a normal direction of the first plane, and the normal direction is perpendicular to the first plane.

Abstract: A radar antenna system comprises a plurality of transmitting sub-arrays; a plurality of receiving sub-arrays; and a transceiving control unit coupled to the plurality of transmitting sub-arrays and the plurality of receiving sub-arrays, configured to control the plurality of transmitting sub-arrays and the plurality of receiving sub-arrays, such that the radar antenna system selectively operates in one of an amplitude-comparison mono-pulse mode and a phase-comparison mono-pulse mode.

Abstract: An electronic device is provided, which includes a circuit board and a bridge-shaped circuit board structure. The circuit board includes a first circuit board edge, a second circuit board edge, a first coupling unit, and a second coupling portion. The first coupling unit is located on the first circuit board edge. The second coupling unit is located on the second circuit board edge. The bridge-shaped circuit board structure includes a first supporting portion, a second supporting portion, a planar portion, a third coupling unit and a fourth coupling portion. The first supporting portion is disposed on the first planar portion edge. The second supporting portion is disposed on the second planar portion edge. A receiving space is formed between the planar portion and the circuit board.

Abstract: A multiband antenna for receiving or transmitting wireless signals of a plurality of frequency bands includes a grounding sheet, formed with a hole at a first side, for providing grounding, a first micro-strip line, substantially parallel to the first side of the grounding sheet, a connecting unit, connecting to the first side of the grounding sheet and the first micro-strip line, for forming a resonant cavity with the first side of the grounding sheet and the first micro-strip line, a second micro-strip line, formed in the resonant cavity and substantially parallel to the first micro-strip line, a third micro-strip line, extending from the hole of the grounding sheet to the second micro-strip line, and a feed-in terminal, formed on the third micro-strip line within the hole, for transmitting the wireless signals.

Abstract: A radar and a method for enabling array antenna are proposed. The radar includes a transceiver, a multi-input multi-output (MIMO) array antenna, a phased array antenna, and a controller. The MIMO array antenna is coupled to the transceiver and includes first transmitting sub-arrays and receiving sub-arrays. The phased array antenna is coupled to the transceiver and includes second transmitting sub-arrays and the receiving sub-arrays. The controller is coupled to the transceiver and configured to to enable the first transmitting sub-arrays to form the MIMO array antenna or enable the second transmitting sub-arrays to form the phased array antenna.

Abstract: A radar device for an automotive radar system includes a base, a first antenna module including a first transmitting antenna and a plurality of first receiving antennas for emitting a detection signal and generating a first signal receiving result, wherein the first antenna is fixed on the base, a second antenna module including a second transmitting antenna and a plurality of second receiving antennas for emitting the detection signal and generating a second signal receiving result, wherein the second antenna is fixed on the base, and a control system disposed in the base and coupled to the first antenna module and the second antenna module for outputting the detection signal to the first transmitting antenna and the second antenna and processing the first signal receiving result and the second signal receiving result.

Abstract: A pre-warning method utilized in a vehicle radar system is disclosed. The vehicle radar system includes a frequency-modulation continuous wave (FMCW) module, a data transceiver module and an antenna module, and the FMCW module and the data transceiver module share the antenna module. The pre-warning method includes the FMCW module utilizing the antenna to transmit and receive beat signals to detect dynamic information of a target corresponding to the vehicle radar system and obtain a first detection result, and receiving and broadcasting data to broadcast the first detection result via the data transceiver module and the antenna module, or receive a detection result broadcasted by another vehicle radar system and combine the detection result with the first detection result to perform real-time target tracking and alarm.