1. What is the “industry first” achieved by Arbe’s final RF chipset?
Arbe has delivered the first combination of ultra-high radar native resolution and design flexibility in a mass-production configuration. This chipset provides 12 to 20 times more channels than best-in-class radars currently at retail, resulting in the highest radar image quality on the market.
2. How many channels does the proprietary RF chipset include?
The chipset consists of a transmitter chip with 24 channels and a receiver chip with 12 channels. When integrated with Arbe’s processor, it creates a 48×48 channel array (2,304 virtual MIMO elements), providing the high-dynamic range needed to eliminate angular ambiguity and false alarms.
3. What is the maximum detection range for a vehicle with the new transmitter?
Using single-channel transmission, the radar can detect vehicles at over 300 meters. However, by utilizing beamforming(simultaneous transmission from multiple channels), the detection range increases to a staggering 800 meters for vehicles and 350 meters for vulnerable road users (VRUs).
4. How does Arbe’s beamforming differ from current 12×16 radars?
In traditional 12×16 radars, using channels for beamforming drastically reduces the MIMO array size, which kills resolution and increases “sidelobes” (interference). Because Arbe has a massive 48×48 array, it can use beamforming with minimal impact on resolution, maintaining a clear image while extending range.
5. What improvements were made to power consumption?
Arbe successfully reduced the power consumption per chip by 50% for both the transmitter and receiver. This makes it the most efficient solution in the industry in terms of “power consumption per channel,” a critical factor for electric vehicles (EVs) and complex sensor suites.
6. How does the chipset handle extreme automotive temperatures?
The new receiver chip features on-chip temperature auto-calibration. This allows the radar to maintain perfect calibration and performance stability across the entire automotive temperature range, from -40°C to 150°C (-40°F to 302°F).
7. What is the “Noise Figure” and why does it matter?
The receiver has a noise figure of 11 dB, the best in the industry. A lower noise figure means higher sensitivity, which is what allows the radar to “see” very small, low-reflection objects like a flat tire on a dark highway or a distant motorcyclist.
8. What safety certifications is the chipset ready for?
The receiver is designed to meet the highest automotive standards, including ASIL-B, AEC-Q100, and is both Automotive Grade 1 and 2 ready, ensuring it meets the rigorous reliability requirements of global OEMs.
9. How does this chipset support “Delivery Robots”?
The high resolution and beamforming capabilities allow for precise environmental mapping at close ranges. This enables delivery robots to navigate sidewalks safely, identifying small obstacles and pedestrians with the precision needed for urban operation.
10. What complex driving scenarios does this technology specifically address?
The chipset enables the advanced perception required for unprotected left turns, T-junctions, and highway merging. By providing forward and backward “Free Space Mapping,” the radar tells the car exactly where it is safe to move in these high-risk scenarios.
Arbe’s Final RF Chipset: The New Gold Standard for Radar
Arbe is constantly pushing the envelope to provide our customers with perception radar that surpasses any other radar solution on the market by leaps and bounds. The latest in our continuous efforts to ensure the highest possible levels of safety is the launch of our final RF chipset production configuration. The new RF Chipset provides increased range and reduced power consumption, while offering design flexibility combined with ultra high radar native resolution – an industry first. The result is enhanced optimal performance across customer verticals and driving scenarios.
Arbe’s proprietary RF chipset includes a transmitter chip with 24 channels and a receiver chip with 12 channels. We have achieved state-of-the-art RF performance at the lowest cost per channel on the market. Coupled with Arbe’s cutting-edge radar processor, this RF chipset provides up to 48×48 channels – or up to 2304 virtual MIMO elements – which is twelve to twenty times more compared to the best-in-class radars available today at retail costs. This is the key in Arbe’s technology ability to achieve native high-dynamic range in all dimensions, avoiding angular ambiguity, minimizing false alarms, especially for complex use-cases and challenging environments. All of the combined advantages add up to the best radar image quality on the market, effortlessly detecting objects in complicated use cases such as a vehicle under a bridge, a tire on the road, a pedestrian near a guardrail, a motorcyclist over 250 meters away, and more.
The new Transmitter chip introduces features that achieve significant advantages. It provides a best-in-class output power of 12.5 dBm from a single channel, which allows long range detection of over 300m for a vehicle with a single channel, while also reducing the power consumption per chip by 50%. The transmitter also supports beamforming, simultaneous transmission from multiple channels, which can increase vulnerable road user (VRU) detection range to 350m, and vehicle detection to 800m.
This ability to transmit from multiple channels provides the much needed flexibility in radar design and wave form (modulation) design to optimize performance across customer verticals and driving use cases.
Further, Arbe’s beamforming has a minimal impact on resolution, dynamic range & spatial ambiguity. While current 12×16 Radars can provide Tx beamforming capabilities, the low number of channels means that transmitting from several together comes at the expense of the MIMO array size, reducing resolution and increasing sidelobes. Arbe’s significantly larger number 48*48 MIMO channels affords much more flexibility in design as compared to 12*16 arrays, resulting in minor impact on the resolution.
The new receiver chip, likewise offers important improvements. We have successfully released on-chip temperature auto-calibration to fully support the automotive temperature requirements, enabling the chip to work with the same calibration over the entire range, from -40 to 150 degrees Celsius. As with the transmitter, the power consumption per chip has been reduced by 50%, outperforming all other solutions in power consumption per channel. The noise figure has been reduced to 11 dB, which is the best noise figure in the industry. This means that the system has high sensitivity, which in turn contributes to enhanced range and the ability to detect small objects. Finally, the receiver is ASIL-B, AEC-Q100, Automotive Grade 2, and Automotive Grade 1 ready.
Arbe’s final RF Chipset production configuration achieves long range sensing and high sensitivity, while reducing power consumption significantly and maintaining performance stability across the entire automotive temperature range. Its high physical resolution imaging allows the system to track moving objects, map the environment and stationary obstacles, generate free-space mapping for easy path planning, and provide accurate localization.
Beamforming is important for addressing many challenging use cases, such as spotting a flat tire on the highway, enabling delivery robots to drive safely on the sidewalk, and developing forward and backward free space mapping, particularly for unprotected left turns, T junctions, merging onto the highway, and more.
These advancements contribute to the delivery of the best radar image quality on the market, and to the achievement of unmatched levels of safety in a wide range of driving scenarios via ultra-long range and beamforming.
Connect to learn more 
