Abstract: The application discloses a radar antenna device and a radar element thereof. The radar antenna device, configured for installation on a side surface of a vehicle, comprises: a base having a surface; a first antenna circuit board disposed on the surface; and a second antenna circuit board disposed on the surface. Wherein a first angle is formed between the first antenna circuit board and the side surface of the vehicle, and a second angle is formed between the second antenna circuit board and the side surface of the vehicle, and both the first angle and the second angle are greater than or equal to 15 degrees and less than or equal to 25 degrees.

Abstract: An automotive modular radar device comprises a bracket module and a radar module. The bracket module comprises a bracket. The bracket comprises a connected plate and a fixed plate. The connected plate is used to be fixed to a vehicle. The bottom edge of the fixed plate is disposed on the connected plate. An angle is formed between the bottom edge and the side of the fixed plate, and the angle is between 0 and 90 degrees. The radar module comprises a radar. The radar comprises a casing, a circuit board, an antenna module and a processing unit. One side of the casing is fixed on the side of the fixed plate. The circuit board is disposed in the casing. The antenna module is disposed on the circuit board. The processing unit is disposed on the circuit board and electrically connected to the antenna module.

Abstract: A radar antenna device for being installed on a lateral surface of a vehicle is provided by the present disclosure. The radar antenna device comprises: a base; a first antenna PCB disposed on the base, and including a first radar transmitting unit; and a second antenna PCB disposed on the base, and including a second radar transmitting unit. The first and second radar transmitting units respectively transmit radar signals including a strong signal region and a weak signal region and a signal border therebetween. The average gain of signal strength of the strong signal regions is greater than 0 db, and the average gain of signal strength of the weak signal regions is less than 0 db. An intersection is formed by the signal border of the radar signals, and the shortest distance between the intersection and the second surface is between 30 mm to 80 mm.