Millimeter Wave Radar Rises Again
With the popularity of automotive electronics, especially ADAS and L2+autonomous driving, millimeter wave radar has become a necessary sensing element.
Millimeter wave radar can transmit signals with a wavelength of millimeter magnitude. In the electromagnetic spectrum, this wavelength is considered a short wavelength and is one of the advantages of this technology. The system components (such as antennas) required to process millimeter wave signals are very small in size. Another advantage of short wavelengths is high accuracy. A millimeter wave system operating at 76 – 81 GHz (corresponding to a wavelength of about 4 mm) will be able to detect movements as small as a few tenths of a millimeter.