K-band CMOS High-Power Harmonic Response Rectifier for Nonlinear Detection based Wireless Power Transfer

  • Jisu Kim Soongsil University
  • Juntaek Oh Soongsil University
Keywords: cross coupled rectifier, harmonic backscattering, millimeter wave, wireless power transfer(WPT)

Abstract

This paper presents a K-band CMOS harmonic response rectifier based on 2-stage cross coupled bridge rectifier. The proposed CMOS harmonic response rectifier configured with rectification stage and second harmonic output stage can be used for nonlinear detection based wireless power transfer. The transformer in the rectification stage did not only generate differential signal but also matched to 50 ohm at a fundamental frequency to achieve low insertion loss. To maximize conversion gain, the second harmonic stage was matched to 50 ohm at second harmonic frequency. The proposed CMOS harmonic response rectifier was designed using a 65 nm CMOS process and had a chip area of 0.35 mm x 0.22 mm. The simulation results show that the power conversion efficiency (PCE) was 15.2–20.2 %, and the conversion gain (CG) was -23–-21.2 dB at an input power of 25.5 dBm in the frequency range of 20.5–27 GHz.

Published
2023-10-01
How to Cite
Kim, J., & Oh, J. (2023). K-band CMOS High-Power Harmonic Response Rectifier for Nonlinear Detection based Wireless Power Transfer. Journal of Integrated Circuits and Systems, 9(4). https://doi.org/10.23075/jicas.2023.9.4.002
Section
Articles