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- Title
5.8 GHz High-Efficiency RF–DC Converter Based on Common-Ground Multiple-Stack Structure.
- Authors
Bae, Jongseok; Yi, Sang-Hwa; Choi, Woojin; Koo, Hyungmo; Hwang, Keum Cheol; Lee, Kang-Yoon; Yang, Youngoo
- Abstract
This paper presents a 5.8 GHz RF–DC converter for high conversion efficiency and high output voltage based on a common-ground and multiple–stack structure. An RF isolation network (RFIN) for the multiple-stack RF–DC converter is proposed to combine the DC output voltage of each stack without separating its RF ground from the DC ground. The RFIN is designed using micro-strip transmission lines on a single-layer printed circuit board (PCB) with a common ground for the bottom plate. A 4-stack RF–DC converter based on a class-F voltage doubler for each stack was implemented to verify the proposed RFIN for the multiple-stack and common-ground structure. The performances of the implemented 4-stack RF–DC converter were evaluated in comparison to the single-stack converter that was also implemented. The size of the implemented 4-stack RF–DC converter using bare-chip Schottky diodes is 24 mm × 123 mm on a single-layer PCB. For an input power of 21 dBm for each stack of the RF–DC converter with a load resistance of 4 kΩ, a high efficiency of 73.1% and a high DC output voltage of 34.2 V were obtained.
- Subjects
PRINTED circuit design; AC DC transformers; SCHOTTKY barrier diodes; HIGH voltages; PRINTED circuits; ELECTRIC lines; ELECTRIC potential
- Publication
Sensors (14248220), 2019, Vol 19, Issue 15, p3257
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s19153257