A 24GHz Low-Cost, Long-Range, Narrow-Band, Monopulse Radar Front End System for Automotive ACC Applications

Multi-beam and multi-range antenna array for 24 GHz radar applications

“…By comparing amplitudes of the two beams one can calculate the target's absolute angular deviation from the antenna boresight, while the sign of the phase difference between the two beams provides information whether the target is located at the left or right side of the antenna. The monopulse direction finding technique is widespread in automobile applications for Adaptive Cruise Control (ACC) and Collision Warning/Avoidance (CW/A) [14][15] [16].…”

Gain-enhanced LTCC system-on-package for automotive UMRR applications

“…In addition, UMRR can be employed as a support for cut-in, stop and go situations in the high range Adaptive Cruise Control (ACC) systems [4]. However, the above mentioned radar applications are still limited to very expensive vehicles due to their high cost implementations [5].…”

A CMOS ultra-wideband transmitter with bi-phase modulation for 22–29 GHZ vehicular radar application

“…Pulse modulation UWB technique holds the advantages of precision timing of pulses and the mature development of advanced timer technologies [9], which make it more capable for advanced radar sensing. In the pulse modulation UWB system, either switch-based on-off keying technique [10] or mixerbased up-converting technique [11] is used to generate the wideband signal. At millimeter-wave frequencies, switchbased technique is more power efficient [12] since the mixer, power amplifier, and other components in the mixer-based technique are always "on" with a very low duty-cycle transmitting signal.…”