Multiple-Beam Steering Using Graphene-Based Coding Metasurfaces

Area of Science:

• Electromagnetic wave manipulation
• Metasurface technology
• Graphene applications in antennas

Background:

• Coding metasurfaces are crucial for controlling electromagnetic waves in advanced wireless systems.
• Graphene's tunable conductivity makes it ideal for reconfigurable antennas and steerable coded states.

Purpose of the Study:

• To propose a novel graphene-based coding metasurface (GBCM) for beam reconfigurable millimeter wave (MMW) antennas.
• To demonstrate a new method of manipulating coding states through graphene's sheet impedance, bypassing the need for bias voltage.

Main Methods:

• Design and simulation of a simple structured beam reconfigurable MMW antenna utilizing a GBCM.
• Implementation and testing of various coding sequences: dual-, quad-, single-beam generation, 30° beam deflection, and random coding for radar cross-section reduction.

Main Results:

• Graphene-based coding metasurfaces show significant potential for MMW manipulation.
• The proposed method successfully demonstrates beam reconfigurability and radar cross-section reduction using graphene impedance control.

Conclusions:

• Graphene is a highly promising material for developing advanced MMW antenna systems.
• The developed GBCM technology lays the groundwork for future development and fabrication of sophisticated metasurface devices.