Recent regulation changes have allowed the automotive radar market to shift from the 24-GHz band to the 77-GHz band, introducing a range of new design and test challenges. Higher frequencies facilitate wider bandwidths and increasing resolution, while the shorter wavelengths provide smaller form factors and improved range enabled by a relaxation of the maximum power specification in the 77-GHz band. Better resolution, smaller size, and longer range mean that radar is rapidly becoming the
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