Electronic-components less fully textile multiple resonant combiners for body-centric near field communication

Area of Science:

• Materials Science
• Electrical Engineering
• Wearable Technology

Background:

• Smart textiles are increasingly integrated into the garment industry, leveraging smartphone capabilities for power and wireless communication.
• A key challenge is integrating electronics without compromising textile flexibility and wearer comfort.
• Existing solutions often rely on rigid, embedded solid-state components, limiting wearability.

Purpose of the Study:

• To develop a fully textile-based Near Field Communication (NFC) combiner.
• To enable seamless power and data transfer between smartphones and sensors within garments.
• To overcome the limitations of traditional electronic components in e-textiles.

Main Methods:

• Design and fabrication of textile NFC antennas and two-wire transmission lines.
• Theoretical analysis and electromagnetic simulations to optimize performance.
• Experimental validation of the textile combiner's functionality at NFC frequencies (13.56 MHz).

Main Results:

• Demonstration of a functional textile NFC combiner capable of data and power transfer.
• Adaptation of the combiner's resonant frequency to the standard NFC frequency of 13.56 MHz.
• Development of generalized equations for resonant frequency in multi-antenna textile NFC combiners.

Conclusions:

• The developed textile NFC combiner effectively transfers power and data, eliminating the need for embedded electronic components.
• This approach significantly enhances comfort and flexibility in smart textiles.
• The generalized equations provide a valuable tool for designing future multi-antenna textile NFC systems.