Design of 24-GHz Power Amplifier for Automotive Collision Avoidance Radars

차량 추돌 방지 레이더용 24-GHz 전력 증폭기 설계

  • Received : 2015.09.09
  • Accepted : 2015.10.19
  • Published : 2016.01.31


In this paper, we propose 24-GHz CMOS radio frequency (RF) power amplifier for short-range automotive collision avoidance radars. This circuit contains common source stage with inter-stages conjugate matching circuit as a class-A mode amplifier. The proposed circuit is designed using TSMC $0.13-{\mu}m$ mixed signal/RF CMOS process ($f_T/f_{MAX}=120/140GHz$). It operates at the supply voltage of 2V, and it is designed to have high power gain, low insertion loss and low noise figure in the low supply voltage. To reduce total chip area, the circuit used transmission lines instead of the bulky real inductor. The designed CMOS power amplifier showed the smallest chip size of $0.1mm^2$, the lowest power consumption of 40mW, the highest power gain of 26.5dB, the highest saturated output power of 19.2dBm and the highest maximum power-added efficiency of 17.2% as compared to recently reported results.


24GHz;automotive collision avoidance;CMOS power amplifier;transmission lines


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Supported by : Andong National University