Technological Features of Graphene-based RF NEMS Capacitive Switches on a Semi-insulating Substrate

Litun, Yana; Litun, Vladimir; Кононенко, О. В.; Chichkov, M. V.; Borisenko, D. P.

doi:10.1109/piers-spring46901.2019.9017225

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B Graphene2

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(2 citation statements)

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“…Due to this phenomenon graphene is considered for switching applications. There are several publications that analyses the possibilities of graphene-based RF switches for millimeter-wave band [64,[73][74][75][76][77][78][79][80]. However, most of these papers include only theoretical background and simulation results of such structures.…”

Section: B Graphenementioning

confidence: 99%

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State of the Art Sub-Terahertz Switching Solutions

Sobolewski

Yashchyshyn

2022

IEEE Access

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Section: B Graphenementioning

confidence: 99%

“…Graphene layers can also be used to construct MEMS devices. This concept is investigated in [64,78] and [79]. These structures are based on graphene nanolayer membrane suspended over specially constructed coplanar waveguide (fig.…”

Section: B Graphenementioning

confidence: 99%

State of the Art Sub-Terahertz Switching Solutions

Sobolewski

Yashchyshyn

2022

IEEE Access

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Graphene/AlGaN/GaN RF Switch

et al. 2021

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RF switches, which use a combination of graphene and two-dimensional high-density electron gas (2DEG) in the AlGaN/GaN system, were proposed and studied in the frequency band from 10 MHz to 114.5 GHz. The switches were integrated into the coplanar waveguide, which allows them to be used in any system without the use of, e.g., bonding, flip-chip and other technologies and avoiding the matching problems. The on-state insertion losses for the designed switches were measured to range from 7.4 to 19.4 dB, depending on the frequency and switch design. Although, at frequencies above 70 GHz, the switches were less effective, the switching effect was still evident with an approximately 4 dB on–off ratio. The best switches exhibited rise and fall switching times of ~25 ns and ~17 ns, respectively. The use of such a switch can provide up to 20 MHz of bandwidth in time-modulated systems, which is an outstanding result for such systems. The proposed equivalent circuit describes well the switching characteristics and can be used to design switches with required parameters.

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Technological Features of Graphene-based RF NEMS Capacitive Switches on a Semi-insulating Substrate

Cited by 2 publications

References 24 publications

State of the Art Sub-Terahertz Switching Solutions

State of the Art Sub-Terahertz Switching Solutions

Graphene/AlGaN/GaN RF Switch

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