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Graphene-based terahertz reconfigurable printed ridge gap waveguide structure.

Mohamed Mamdouh M Ali1, Shoukry I Shams2, Mahmoud Elsaadany3

  • 1Faculty of Engineering, Department of Electrical Engineering, Assiut University, Assiut, Egypt. mohamed.ali@ieee.org.

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|December 6, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a novel reconfigurable printed ridge gap waveguide (RPRGW) using graphene for terahertz applications. The RPRGW structure offers low loss and wide tunability, addressing key challenges in flexible wireless terahertz systems.

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Area of Science:

  • Microwave Engineering
  • Terahertz Technology
  • Materials Science

Background:

  • Graphene-based microwave devices enable reconfigurable flexible wireless terahertz systems.
  • High insertion loss and limited tunable range are persistent challenges in terahertz devices.

Purpose of the Study:

  • To introduce a novel reconfigurable printed ridge gap waveguide (RPRGW) structure utilizing graphene for terahertz frequencies.
  • To address the limitations of high insertion loss and narrow tunable range in existing terahertz guiding structures.

Main Methods:

  • Implementation of a graphene-based reconfigurable printed ridge gap waveguide (RPRGW).
  • Utilizing a quasi-TEM mode for low dispersion in millimeter and terahertz wave applications.
  • Designing the structure with a signal propagating in a lossless air gap, separated from lossy graphene elements.

Main Results:

  • The RPRGW structure demonstrates suitability for terahertz frequency applications.
  • The guiding structure supports a quasi-TEM mode, resulting in low dispersion.
  • Low signal loss is achieved due to signal propagation within an air gap, isolated from graphene.

Conclusions:

  • Graphene can be effectively used to implement a reconfigurable printed ridge gap waveguide for terahertz applications.
  • The proposed RPRGW structure offers a promising solution for low-loss and tunable terahertz guiding.
  • The RPRGW structure was successfully demonstrated in a tunable power divider application.