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Related Experiment Video

Updated: Feb 8, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Broadband frequency-reconfigurable metamaterial absorber using switchable ground plane.

Heijun Jeong¹, Sungjoon Lim²

¹School of Electrical and Electronic Engineering, Chung-Ang University, Heukseok-Dong, Dongjak-Gu 156-756, Republic of Korea.

Scientific Reports

|June 17, 2018

Summary

This study presents a novel metamaterial absorber with a switchable ground plane (SGP) for reconfigurable frequency absorption. The device achieves over 90% absorption across two distinct broadband frequency ranges by switching PIN diodes.

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Area of Science:

Electromagnetics
Materials Science
Metamaterials

Background:

Metamaterial absorbers offer tunable electromagnetic wave absorption.
Achieving broadband and reconfigurable absorption remains a challenge.

Purpose of the Study:

To propose and demonstrate a broadband frequency-reconfigurable metamaterial absorber.
To introduce a novel switchable ground plane (SGP) for reconfiguring absorption bands.

Main Methods:

Utilizing a double resistive square-ring resonator for broadband absorption.
Implementing a switchable ground plane (SGP) with PIN diodes to alter resonant frequencies.
Conducting full-wave simulations and experimental measurements.

Main Results:

Achieved absorption >90% between 3.5-11 GHz when PIN diodes are ON.
Achieved absorption >90% between 1.7-5.2 GHz when PIN diodes are OFF.
Demonstrated frequency reconfigurability through the SGP.

Conclusions:

The proposed metamaterial absorber with SGP enables broadband and reconfigurable absorption.
The SGP effectively switches absorption bands by altering its electrical properties.
The design shows promise for applications requiring tunable electromagnetic absorption.