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Textile Slotted Waveguide Antennas for Body-Centric Applications.

Davorin Mikulić¹, Evita Šopp¹, Davor Bonefačić¹

¹Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia.

Sensors (Basel, Switzerland)

|February 15, 2022

Summary

This summary is machine-generated.

A novel textile slotted waveguide antenna offers a viable solution for wearable applications. This conductive fabric antenna achieves a 9 dBi gain and is suitable for body-centric communication systems.

Keywords:

conductive textile slotted waveguide antennas textile antennas wearable antennas

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Area of Science:

Electromagnetic engineering
Wearable technology
Textile electronics

Background:

Designing wearable antennas faces challenges in meeting technical, aesthetic, and application-specific requirements.
Traditional antennas often lack the flexibility and integration needed for seamless incorporation into clothing.
The need for robust and efficient antennas for body-centric communication is growing.

Purpose of the Study:

To propose and characterize a novel textile realization of a slotted waveguide antenna for wearable applications.
To evaluate the performance of a textile slotted waveguide array against a metallic counterpart.
To explore the potential of textile antennas for various body-centric communication scenarios.

Main Methods:

Fabrication of a rectangular waveguide antenna using conductive fabric and conductive thread.
Design and construction of a three-slot slotted waveguide array for the 5.8-GHz ISM band.
Experimental characterization including gain, radiation efficiency, bandwidth, and radiation patterns.
Comparison with an equivalent metallic antenna.

Main Results:

The textile slotted waveguide array achieved an operating bandwidth greater than 300 MHz.
Measured gain was approximately 9 dBi with radiation efficiency exceeding 50% across the bandwidth.
The textile antenna exhibited a 2 dB lower gain compared to the metallic antenna but maintained stable gain and radiation patterns.
Performance was comparable to metallic antennas, demonstrating suitability for wearable applications.

Conclusions:

Textile slotted waveguide antennas are a promising technology for body-centric communication and sensor systems.
The developed antenna can be integrated into various clothing items, such as safety vests and uniforms.
The proposed antenna design is versatile and can be adapted for off-body, on-body, and in-body communication.