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A Rectifier Circuit Insensitive to the Angle of Incidence of Incoming Waves Based on a Wilkinson Power Combiner

Design files of IEEE publication: A Rectifier Circuit Insensitive to the Angle of Incidence of Incoming Waves Based on a Wilkinson Power Combiner

In this repo, a novel high efficiency, low-cost and low-complexity RF-to-dc converter was designed for RF energy harvesting in the 2.4 GHz band. The proposed design has two RF inputs and maintains a high efficiency over a wide range of incoming incident wave angles. The circuit is based on a Wilkinson power combiner and has two single-diode rectifiers. One rectifier is connected at the combiner’s output and collects the energy coming from the two inputs. The second rectifier replaces the isolation resistor of the combiner in order to collect the power that would otherwise be dissipated in it. The second rectifier is used for recycling the wasted power when the input signals do not have the same phase. The novel RF-to-dc converter was fabricated using commercially available components and lowcost FR-4 substrate. A prototype was designed and its efficiency was optimized for low power input levels. The measured system efficiency was 16.2% for in-phase input signals with available input power −17 dBm. When the relative phase of input signals varied from 0 to 360 degrees, a variation in efficiency between 15.3% and 22% was observed. For input power 3 dBm, the efficiency varies from 26% to 39% between 0 to 360 degrees phase difference.


Authors:

Spyridon Nektarios Daskalakis
Apostolos Georgiadis
George Goussetis
Manos M. Tentzeris

IEEE Xplore: https://ieeexplore.ieee.org/abstract/document/8706260
Local: http://daskalakispiros.com/files/daskalakis_mtt_2019.pdf



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Citing

If you use our design, please cite [1].

@article{daskalakis2019rectifier,
  title={A rectifier circuit insensitive to the angle of incidence of incoming waves based on a Wilkinson power combiner},
  author={Daskalakis, Spyridon Nektarios and Georgiadis, Apostolos and Goussetis, George and Tentzeris, Manos M},
  journal={IEEE Transactions on Microwave Theory and Techniques},
  volume={67},
  number={7},
  pages={3210--3218},
  year={2019},
  publisher={IEEE}
}
 

[1] S. N. Daskalakis, A. Georgiadis, G. Goussetis and M. M. Tentzeris, A Rectifier Array Insensitive to the Angle of Incidence of Incoming Waves Based on a Wilkinson Power Combiner, IEEE Transactions on Microwave Theory and Techniques (TMTT), Vol. 67, No. 7, pp. 3210-3218, July 2019.​​

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