In Automotive Radar, The Wavelength of The Transmit Signal is a Few Millimeters, Which Means The Wavelength of a Signal is Millimeters

Automotive Radar
Automotive Radar


Automotive Radar detect the speed and range of objects in close proximity to the vehicle. A transmitter and a receiver make up an radar. The transmitter gives out radio waves that strike an item and bounce back to the receiver, allowing the distance, speed, and direction of the object to be determined. Advanced Driver Assistance Systems require the use of automotive radars (ADAS). Short-range and long-range radar sensors continuously scan the environment around a vehicle, feeding important data to ADAS systems to increase driver safety and comfort. Automotive radars, from short-range (SRR) to long-range (LRR) applications, offer high versatility and precision, making them essential building blocks for Assisted L0/L3 through Autonomous L4/L5 driving.

Today, numerous types of radar are widely used. Frequency modulated continuous wave, or FMCW, is the type used in cars. FMCW puts out a chirp, a pulse whose frequency rises throughout transmission, rather than a simple pulse that is reflected back from targets. The frequency difference between the transmitter's chirp and the frequency of the received reflection (at any given time) is proportional to the distance between the transmitter and the object. Advanced Driver Assistance Systems require the use of Automotive Radar (ADAS). Short-range and long-range radar sensors continuously scan the environment around a vehicle, feeding important data to ADAS systems to increase driver safety and comfort.

Automotive Radar Market, from short-range (SRR) to long-range (LRR) applications, offer high versatility and precision, making them essential building blocks for Assisted L0/L3 through Autonomous L4/L5 driving. The antenna, the RF section, a high-speed digital interface, a signal processor, and a power section are the five key functional building pieces in today's vehicular radar module. Vertical and horizontal polarisation, or simply V and H, are the two types of antennas used in automotive systems. The typical type is V. Because the single-element patch V radiator has a small emission pattern, vertical polarisation provides the advantage of less clutter but a limited azimuth (angle of horizontal deviation) FOV. Horizontal polarisation, on the other hand, results in a broader azimuth FOV but more ripples in the target pattern.

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