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Related Experiment Video

Updated: Jan 17, 2026

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Embeddable NbO2-Based Modulator with Carrier Generation and Direct Digital Modulation for Wireless Internet of

Pei Chen1,2,3, Yifan Li1,2, Jie Yu1

  • 1State Key Laboratory of Integrated Chips and Systems, College of Integrated Circuits and Micro-Nano Electronics, Frontier Institute of Chip and System, Fudan University, Shanghai, 200433, China.

Small (Weinheim an Der Bergstrasse, Germany)
|September 16, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed an embeddable Niobium Dioxide (NbO2)-based Frequency Shift Keying (FSK) modulator for efficient wireless data transmission. This novel hardware integrates carrier generation and digital modulation, reducing costs and power consumption for Internet of Things (IoT) applications.

Keywords:
frequency shift keyingniobium dioxide memristorscalingthermal engineeringwireless Internet of Things

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Computer Engineering

Background:

  • Wireless Internet of Things (WIoT) demands efficient signal modulation hardware.
  • Traditional modulation schemes face hardware cost and power consumption challenges due to digital-analog separation.

Purpose of the Study:

  • To develop an embeddable Niobium Dioxide (NbO2)-based Frequency Shift Keying (FSK) modulator.
  • To integrate carrier generation and digital modulation for direct binary-to-frequency conversion.
  • To enhance bit-rate efficiency using NbO2-based Multi-FSK (NMFSK).

Main Methods:

  • Integration of a low-voltage NbO2 oscillator with a 28 nm MOSFET modulation unit.
  • Implementation of NMFSK by paralleling MOSFETs with varied W/L ratios for sequential assignment based on bit weights.
  • Performance evaluation using 4FSK modulation of consecutive letters.

Main Results:

  • Successful development of an embeddable NbO2-based FSK modulator.
  • Demonstration of direct conversion of binary signals into distinct oscillation frequency bands.
  • Achieved smooth frequency transitions in oscillation sequences using NMFSK, suitable for continuous tasks.

Conclusions:

  • The developed NMFSK modulator offers a promising hardware solution for embeddable modulation units.
  • This technology promotes advancements in wireless transmission for Internet of Things (IoT) applications.
  • The integrated approach reduces hardware complexity, cost, and power consumption.