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A dual-input extended-dynamic-PCE rectifier for dedicated far-field RF energy harvesting systems

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Abstract

This paper presents a dual-input extended-dynamic-range, high-PCE rectifier for dedicated far-field RF energy harvesting systems. Two identical input RF energy supply source are applied into two individual rectifier. The rectifier with the highest PCE is selected to deliver dc power to a single-load element. A logic control circuit senses Pin from the rectified dc voltage and toggles between the rectifiers by generating two control voltage to attain high-PCE across Pin. Simulated in a 65nm CMOS process, the proposed system achieves an extended DR of 26 dB for an output load, RL = 100 kΩ. Furthermore, a peak PCE of 54.85% and 47.87% was achieved for RL = 100 kΩ and RL = 150 kΩ, respectively. The sensitivity for an output voltage of 1 V with RL = 100 kΩ is -20.6 dBm.

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Acknowledgement

This work was supported by RU Grant-Faculty Program (GPF056B-2020). This manuscript has no associated data.

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  1. Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia

    Chee Ming Poo, Gabriel Chong & Harikrishnan Ramiah

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  1. Chee Ming Poo
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  2. Gabriel Chong
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  3. Harikrishnan Ramiah
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Correspondence to Harikrishnan Ramiah.

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Poo, C.M., Chong, G. & Ramiah, H. A dual-input extended-dynamic-PCE rectifier for dedicated far-field RF energy harvesting systems. Analog Integr Circ Sig Process 107, 567–573 (2021). https://doi.org/10.1007/s10470-021-01802-5

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  • DOI: https://doi.org/10.1007/s10470-021-01802-5

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