Miniaturized Active-Frequency Selective Surfaces for Low-Power Internet of Things Devices

Area of Science:

• Metamaterials
• Internet of Things (IoT)
• Microwave Engineering

Background:

• The rapid expansion of smart devices fuels the growth of the Internet of Things (IoT).
• Existing IoT node devices often face limitations in size and power consumption.
• There is a need for compact, energy-efficient components for next-generation IoT systems.

Purpose of the Study:

• To propose a miniaturized, controllable metamaterial for low-power and compact Internet of Things (IoT) node devices.
• To achieve efficient reflective control with a low control voltage.
• To enable the development of smaller and more energy-efficient IoT applications.

Main Methods:

• Design and fabrication of a miniaturized metamaterial.
• Operation at a target frequency of 2.4 GHz.
• Utilizing a low control voltage of 3.3 V.
• Experimental validation of reflective control performance.

Main Results:

• The proposed metamaterial operates efficiently at 2.4 GHz.
• It requires a low control voltage of only 3.3 V.
• The metamaterial's size is approximately one-third of the wavelength.
• Experimental results confirm excellent reflective control capabilities.

Conclusions:

• The developed metamaterial is suitable for miniaturized and low-power IoT node applications.
• Its low control voltage and compact size make it ideal for energy-constrained IoT systems.
• This advancement supports the trend towards smaller, more efficient Internet of Things devices.