What are the suppliers of millimeter wave radar chips?
At present, the mainstream products of millimeter wave radar are two specifications, 24G and 77G, corresponding to the two vehicle application frequency bands of 24GHz and 77GHz. among them:
The 24G wavelength is about 1.25cm. It is mainly used for short-distance sensing. It is placed behind the car and can detect the surrounding environment (pedestrians, vehicles, etc.), blind spots, and realize parking assistance and lane change assistance.
The 77G wavelength range is less than 4mm. It is used for medium and long distance measurement. It is mainly placed in front of the car (usually on the bumper) to realize automatic follow-up, adaptive cruise (ACC) and emergency braking (ABE).
At present, most models using millimeter wave radar technology use a 77G + multiple 24G layout. In addition, the 79~81GHz radar used for close-range measurement is a high-end solution in the vehicle scene, featuring high bandwidth and high resolution.
Mercedes-Benz S-class millimeter wave radar configuration (top 5, last 2)
Because the size of the millimeter wave radar product is small on the car, the same detection range is required for 24G and 77G, and the area of ​​the 24G radar will reach ten times that of the 77G antenna. Therefore, 77G will be easier to use on the car in the future, and the technical difficulty is also higher. As technology advances, the cost of semiconductors declines and products eventually unify to the 77G specification.
Based on 24G millimeter wave radar products, it is the main supplier of Daimler Group's 24G millimeter wave radar.
B: Bosch (Bosch, Germany)The world's largest Tier 1 supplier, based on 77G millimeter wave radar products, has been widely used in many models. The product line includes MRR, LRR3, and LRR4, of which the price of MRR is lower.
C: ConTInental (German Continental Group)Both 24G and 77G products are the main suppliers of Daimler Group's 77G millimeter wave radar. The product range includes ARS300, ARS400 and SRR200.
D: Delphi (United States)Mainly based on 77G products, the cost is higher
In addition, Hella, a German veteran auto parts manufacturer that supplies 24G blind spot radar, should not be underestimated.
In addition to the lessons that the market can't change technology, there is also a truth: aiming at foreign countries' blockade of Chinese technology, adopting an import substitution strategy. As long as the technology is over and the products are almost the same, they will certainly earn a pot. .
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