Theoretical limits of rectifying efficiency for low‐power wireless power transfer

The theoretical limits of power conversion efficiency for near‐field wireless power transfer were derived in recent years, but the maximum achievable efficiency for low‐power and far‐field powering has not yet been characterized. In this paper, we derive the performance limits of rectifiers using di...

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Published in:International journal of RF and microwave computer-aided engineering 2018-05, Vol.28 (4), p.e21218-n/a
Main Authors: Chen, Yen‐Sheng, Chiu, Cheng‐Wei
Format: Article
Language:English
Subjects:
Circuits
Efficiency
Energy conversion efficiency
energy harvesting
Guidelines
optimization methods
Parameters
power conversion
power transmission
Rectennas
rectifiers
Schottky diodes
Wireless power transmission
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cited_by cdi_FETCH-LOGICAL-c3378-574e9c0533c6bc8391064a6df33de84626f71dae088c476ecf03621cbb67cd93
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description The theoretical limits of power conversion efficiency for near‐field wireless power transfer were derived in recent years, but the maximum achievable efficiency for low‐power and far‐field powering has not yet been characterized. In this paper, we derive the performance limits of rectifiers using diodes for input power ranging from −20 dBm to 0 dBm. These theoretical limits are verified via measurement and simulation, and experimental performance data from the literature are extracted to validate the established maximum efficiency. Moreover, we propose design guidelines to achieve such performance limits, clarifying the method for optimizing the rectifier circuitry and the associated parameters. We further show potential approaches for the enhancement of maximum conversion efficiency via analyzing the loss parameters of Schottky diodes. This work thus establishes the performance benchmark of low‐power rectifiers and provides useful guidelines for future rectenna development.
doi_str_mv 10.1002/mmce.21218
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source Wiley Online Library
subjects Circuits
Efficiency
Energy conversion efficiency
energy harvesting
Guidelines
optimization methods
Parameters
power conversion
power transmission
Rectennas
rectifiers
Schottky diodes
Wireless power transmission
title Theoretical limits of rectifying efficiency for low‐power wireless power transfer
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