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A Wide Dynamic Range CMOS Differential Rectifier for Radio Frequency Energy Harvesting Systems

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Abstract

In this paper, a radio frequency energy harvesting system with a wide dynamic range rectifier is presented. This rectifier has two feedback and feedforward structures. These paths keep the rectifier’s power conversion efficiency (PCE) high at different input powers and thus create a high dynamic range (DR). This rectifier also has better sensitivity. Advances in the rectifier contribute to more satisfactory results for the final system. The circuit is simulated with 180 nm TSMC CMOS technology at a frequency of 900 MHz. Also, a π-type input impedance matching network circuit is used. This circuit is matched at Pin = − 19.5 dBm and f = 900 MHz. In addition, an off-chip balun is utilized to convert the received single-ended signal to the differential one. The achieved PCE and DR are 86.03% and 9.76 dB, respectively, with a sensitivity of − 19.32 at 1 V output voltage. Furthermore, the overall circuit results indicate a PCE of 76.13%, a DR of 6.3 dB, and a sensitivity of − 18.75 dBm.

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Authors and Affiliations

  1. Integrated Circuits Design Laboratory, Department of Electrical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Ave., Tehran, 15875-4413, Iran

    Ataollah Mahsafar & Mohammad Yavari

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  1. Ataollah Mahsafar
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  2. Mohammad Yavari
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Correspondence to Mohammad Yavari.

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Mahsafar, A., Yavari, M. A Wide Dynamic Range CMOS Differential Rectifier for Radio Frequency Energy Harvesting Systems. Circuits Syst Signal Process 43, 2658–2674 (2024). https://doi.org/10.1007/s00034-024-02607-3

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  • DOI: https://doi.org/10.1007/s00034-024-02607-3

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