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Application Notes
Introduction
According to government reports, thousands of people annually lose their lives and millions more have been injured due to car accidents all over the world [1]. That’s a prime reason why scientists and engineers are working on automotive applications, trying to develop automotive radar systems to reduce human casualties from car collisions. As the result of this market demand, various radar systems, such as adaptive cruise contro (ACC), stop-and-go, blind spot detection (BSD), lane change assist (LCA), and rear crash
warning (RCW), are now widely used in vehicles.
Automotive radar based on a frequency modulated continuous waveform (FMCW) [2] is one
technology that is today widely used. Unlike pulse radar, FMCW Radar using continuous
wave modulation can avoid high peak-to-average power ratio (PAPR) in transmission,
which simplifies the design process for antennas and RF components like power
amplifiers. Consequently, an automotive radar system based on this technology offers
more advantages, such as good performance with simplified RF components, small size,
light weight, and low cost.
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