D ual-BandRectifier Circuits at 2.45GHz and 5.8GHz for Wireless Power Transmission

A novel dual-band rectifier circuits at both 2.45 GHz and 5.8 GHz is proposed for wireless power transmission (WPT). The circuits consist of matching network, rectifier, and DC filter. The dual-band microstrip matching network is located between the antenna and the rectifier to realize the matching...

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Bibliographic Details
Published in2018 2nd IEEE Advanced Information Management,Communicates,Electronic and Automation Control Conference (IMCEC) pp. 2543 - 2547
Main Authors Wu, Fang, Sun, Liguo, Guo, Yuhao, Xie, Zipeng
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2018
Subjects
Dual band
dual-band impedance matching
harmonic rejection
Impedance
Microwave circuits
Microwave filters
Power harmonic filters
rectifier circuit
Rectifiers
wireless power transmission(WPT)
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Summary:A novel dual-band rectifier circuits at both 2.45 GHz and 5.8 GHz is proposed for wireless power transmission (WPT). The circuits consist of matching network, rectifier, and DC filter. The dual-band microstrip matching network is located between the antenna and the rectifier to realize the matching at two uncorrelated frequencies. A voltage-doubler rectifier is designed based on Schottky-diode. Fan-shaped and rectangular microstrip structure is used for DC filter, which can block spurious signals from rectifier. The circuit is fabricated on Rogers Duroid 5880 substrate with \mathcal{E} \text{r}=2.2 and a thickness of 0.787mm. The dual-band rectifier circuit demonstrates an RF-to-dc conversion efficiency of 81.6% at 2.45GHzand 57.2% at5.8 GHz across a 750Ω resistor for a 16 dBm input RF power.
DOI:10.1109/IMCEC.2018.8469357