A 60GHz CMOS rectifier with −27.5dBm sensitivity for mm-Wave power detection

A CMOS rectifier that converts 60 GHz signal to DC voltage is presented for millimeter-Wave (mm-Wave) power detection. The sensitivity of the rectifier is -27.5 dBm, which is 22 dB higher than in the previous work. The optimization method for the rectifier is proposed considering the power matching design and loss of the passive devices at 60GHz. According to the proposed method, the number of stage should be decreased because the stacked structure that is often used at frequency of several GHz doesn´t increase the sensitivity in the case of 60GHz. The loss of the passive devices is minimized by adopting the proposed optimization method.