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Multiband antenna design method using predefined shapes and image segmentation techniques for IoT applications.

Fan Jiang1, Zhen Zhang2, Bo Liu3

  • 1School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, 510006, China.

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|July 3, 2025
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Summary
This summary is machine-generated.

This study presents a novel method for designing antennas that retain the visual appearance of objects, like university emblems. This approach enables compact electronic devices for the Internet of Things (IoT) by integrating functionality without aesthetic compromise.

Keywords:
Image segmentationInternet of thingsLogo antennaMulti-port networkPatch antennaPredefined shape

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Antenna Design

Background:

  • The Internet of Things (IoT) demands miniaturized electronic components.
  • Integrating antennas into device aesthetics without compromising performance is a significant challenge.

Purpose of the Study:

  • To propose a novel method for designing antennas that preserve the visual appearance of predefined shapes.
  • To enable the creation of compact, aesthetically integrated antennas for IoT applications.

Main Methods:

  • An image of a university emblem was binarized to define conductive and dielectric regions.
  • The metallic parts were pixelated, and a multi-port network model was created using electromagnetic simulation.
  • A genetic algorithm optimized pixel connectivity based on the port impedance matrix for target frequency bands (WiFi, LTE, FR1).

Main Results:

  • The designed patch antenna successfully integrated into the university emblem's shape.
  • Achieved bandwidths of 12.9%/22.8%/7.0% across the target frequency bands.
  • Demonstrated gains of 3.6/4.6/3.0 dBi and efficiencies greater than 75%.

Conclusions:

  • The proposed method effectively creates functional antennas that maintain the original visual appearance.
  • This technique offers a viable solution for developing aesthetically pleasing and high-performance antennas for compact electronic devices.