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A Dual-Mode Memristor-Based Oscillator for Energy-Efficient Biomedical Wireless Systems.

Imen Barraj1, Mohamed Masmoudi2

  • 1Department of Computer Engineering, College of Computer Engineering and Sciences, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia.

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|May 4, 2026
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Summary
This summary is machine-generated.

This study introduces a novel dual-mode memristor ring oscillator for efficient wireless biomedical systems. It offers fixed-frequency and programmable chirp modes, achieving wide frequency coverage with low power consumption.

Keywords:
DTMOSbiomedical signal conditioningchirp generatordual-mode oscillatormemristor emulatorring VCOwireless telemetry

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Area of Science:

  • Electronics Engineering
  • Biomedical Engineering
  • Materials Science

Background:

  • Wireless biomedical signal conditioning requires energy-efficient and reconfigurable oscillators.
  • Traditional ring oscillators face limitations in power consumption and frequency programmability for advanced applications.

Purpose of the Study:

  • To present a novel dual-mode memristor-based ring oscillator for energy-efficient wireless biomedical signal conditioning.
  • To enable both fixed-frequency and programmable chirp modes within a single, compact oscillator core.

Main Methods:

  • Designed a compact DTMOS memristor emulator using two transistors and one capacitor.
  • Integrated the memristor emulator into a three-stage PMOS ring oscillator architecture.
  • Utilized varactor control for fixed-frequency tuning and state capacitor/control signal pulse width for chirp mode programming.

Main Results:

  • Achieved continuous fixed-frequency tuning from 3.142 GHz to 4.017 GHz with 111 µW power consumption.
  • Generated linear frequency sweeps starting from 0.8 GHz in chirp mode with independent range control.
  • Demonstrated wide frequency coverage (0.8-4.017 GHz, 133.6% fractional range) and low phase noise (-94.3 dBc/Hz for 5-stage).

Conclusions:

  • The proposed dual-mode memristor oscillator offers zero-static-power, wide tunability, and reconfigurability for wireless biomedical applications.
  • Ideal for implantable telemetry, neural stimulation, UWB transmitters, and non-contact vital sign monitoring.
  • Validated through simulations and discrete prototype experiments, showing robust performance.