Adaptive piecewise linear model for class C rectifier design

International Journal of Numerical Modelling Electronic Networks Devices and Fields, vol. 35

Abstract

Abstract In this work, an adaptive piecewise linear diode model is presented for class C rectifier design. The model is developed based on conventional piecewise linear diode model and curve fitting to extract the model parameters for different input power and load situations. The accuracy of the model is evaluated by comparing the calculated power conversion efficiency (PCE) using the proposed model with the simulation result of a commercial software tool (Keysight's ADS). By using the proposed model, PCE is determined by directly calculating the voltage and current waveforms of the diode using close form equations instead of using ADS harmonic balance simulation. The diode used for this study is SMS7621. With relatively low load resistance, the discrepancy of the calculated PCE compared to ADS is less than 0.0001% (at −0.5 dBm input power and with 1.26 kΩ load). The discrepancy is increased in case of a high load resistance which can be up to 5.28% (at −34.7 dBm input power and 40 kΩ load). The proposed diode model can be used to design a class C rectifier without using a commercial simulator given that the IV curve of the diode is provided in the datasheet or from a direct DC sweep measurement. In addition, the proposed model can also estimate achievable PCE of a diode used for implementation of a class C rectifier.

Authors 6

1. Kirote Arpanutud

   King Mongkut's University of Technology North Bangkok

   Affiliation as printed

   The Sirindhorn International Thai German Graduate School of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand

2. Muh‐Dey Wei Aachen Chair of High Frequency Electronics

   RWTH Aachen University

   Affiliation as printed

   Chair of High Frequency Electronics RWTH Aachen University Aachen Germany

3. Kittisak Phaebua

   King Mongkut's University of Technology North Bangkok

   Affiliation as printed

   Department of Teacher Training in Electrical Engineering, Faculty of Technical Education King Mongkut's University of Technology North Bangkok Bangkok Thailand

4. Sitt Tontisirin
   Affiliation as printed

   Silicon Craft Technology Public Company Limited Bangkok Thailand

5. Renato Negra Aachen Chair of High Frequency Electronics

   RWTH Aachen University

   Affiliation as printed

   Chair of High Frequency Electronics RWTH Aachen University Aachen Germany

6. Suramate Chalermwisutkul

   King Mongkut's University of Technology North Bangkok

   Affiliation as printed

   The Sirindhorn International Thai German Graduate School of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand