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Published on: January 21, 2016
Multidirectional strain-insensitive stretchable RF electronics
Furong Yang1,2, Senhao Zhang3,4, Jinyao Zhang1
1College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, China.
Nature Communications
|June 27, 2026
Summary
Researchers developed a novel dual-port multidirectional strain-insensitive antenna (DP-MSiA) for wearable electronics. This antenna maintains stable performance under significant strain, enabling reliable wireless communication and energy harvesting for body-centric systems.
Area of Science:
- Materials Science
- Electrical Engineering
- Wearable Technology
Background:
- Stretchable radio-frequency (RF) electronics are crucial for wearable systems, enabling body-centric communication, health monitoring, and wireless power transfer.
- On-body stretchable antennas face challenges due to multidirectional in-plane strain during natural motion, leading to resonance detuning and wireless link instability.
- Existing strain-insensitive antenna designs often exhibit limitations in effectiveness across diverse loading directions and may compromise radiation performance.
Purpose of the Study:
- To establish a systematic directional mechano-electromagnetic analysis framework for resonant planar antennas.
- To introduce a dual-port multidirectional strain-insensitive antenna (DP-MSiA) that overcomes limitations of existing designs.
- To demonstrate the practical application of the DP-MSiA in strain-insensitive wireless energy harvesting and robust on-body communication systems.
Main Methods:
- Developed a systematic directional mechano-electromagnetic analysis framework for resonant planar antennas.
- Designed and fabricated a dual-port multidirectional strain-insensitive antenna (DP-MSiA).
- Evaluated antenna performance under varying degrees (up to 45%) and directions of in-plane strain, assessing resonance shift and realized gain.
Main Results:
- Achieved strain-insensitive resonance with a minimal shift (≤ 40 MHz at 2.45 GHz) under up to 45% strain across diverse in-plane directions.
- Demonstrated strain-insensitive wireless energy harvesting using rectifiers integrated with the DP-MSiA under varying strain conditions.
- Showcased a strain-robust on-body communication system capable of sustaining stable multimodal health-data transmission during natural motion.
Conclusions:
- The developed DP-MSiA offers significant improvements in strain insensitivity and performance stability for wearable RF electronics.
- The systematic analysis framework provides a valuable tool for designing future deformation-insensitive electronic components.
- This work enables new opportunities for robust, integrated functionalities in wearable and embodied systems, enhancing reliability during physical activity.
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