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A Novel Meander Line Metamaterial Absorber Operating at 24 GHz and 28 GHz for the 5G Applications
Syed Aftab Naqvi1, Muhammad Abuzar Baqir1, Grant Gourley2
1Department of Electrical and Computer Engineering, COMSATS University Islamabad, Sahiwal 57000, Pakistan.
Sensors (Basel, Switzerland)
|May 28, 2022
Summary
Researchers developed a novel dual-band metamaterial absorber for fifth generation (5G) communication systems. This absorber effectively mitigates unwanted antenna interactions in massive MIMO arrays operating at 24 GHz and 28 GHz.
Area of Science:
- Electromagnetics and Metamaterials
- Wireless Communication Systems
Background:
- Fifth generation (5G) systems utilize massive MIMO with 16-128 antennas, necessitating antenna isolation.
- Unwanted interactions between closely spaced antennas in 5G arrays are a significant technical challenge.
- Metamaterial absorbers offer a promising solution for managing electromagnetic interference in compact devices.
Purpose of the Study:
- To introduce a novel dual-band metamaterial-based absorber for 5G applications.
- To design an absorber capable of operating at key 5G frequencies (24 GHz and 28 GHz).
- To provide an analytical model for designing such absorbers based on circuit parameters.
Main Methods:
- A dual-band absorber was designed using symmetric meander lines connected via a transmission line.
- An analytical model was developed to determine the number of meander lines based on total inductance.
- Simulations and experimental measurements were conducted, including angular stability analysis for TE and TM polarizations.
Main Results:
- The proposed metamaterial absorber successfully operates at both 24 GHz and 28 GHz.
- The absorber demonstrates resonance-based absorption of the targeted 5G bands.
- Angular stability analysis confirmed functionality across various incidence angles and polarizations.
Conclusions:
- The novel metamaterial absorber is effective for dual-band absorption in the 5G spectrum.
- The analytical model provides a practical method for designing meander-line based absorbers.
- This absorber is a strong candidate for mitigating interference in millimetre-wave 5G array antennas.
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