This letter proposes an improved dc-single tone approximation model to calculate the RF-dc conversion efficiency, voltage sensitivity, and input impedance of rectification circuits comprising n diodes. The proposed model is based on the energy balance in the rectification circuit and is validated for general cases when the power losses of higher tones are lower than the dc losses. This condition is observed for frequencies at which the capacitor shunts the nonlinear resistor. A comparison of the results obtained using the derived equations and those from the simulation data obtained using a harmonic balance solver confirms the validity and accuracy of this approach for a wide range of output dc voltages and currents.
Bibliographical noteFunding Information:
Manuscript received November 13, 2019; revised January 9, 2020; accepted January 29, 2020. Date of publication February 17, 2020; date of current version March 11, 2020. This work was supported in part by the Ministry of Science and ICT (MSIT), South Korea, in part by the ICT Consilience Creative Program under Grant IITP-2018-2017-0-01015, and in part by the Institute for Information and Communications Technology Promotion (IITP). (Corresponding author: Min-Ho Ka.) Nikolai Simonov and Min-Ho Ka are with the School of Integrated Technology, Yonsei University, Incheon 21983, South Korea (e-mail: email@example.com).
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Electrical and Electronic Engineering