Preprint Open Access
Broadband Microwave Attenuator Based on Few Layer Graphene Flakes
Pierantoni, Luca; et al.
This paper presents the design and fabrication of a broadband microstrip attenuator, operating at 1-20 GHz, based on few layer graphene flakes. The RF performance of the attenuator has been analyzed in depth. In particular, the use of graphene as a variable resistor is discussed and experimentally characterized at microwave frequencies. The structure of the graphene-based attenuator integrates a micrometric layer of graphene flakes deposited on an air gap in a microstrip line. As highlighted in the experiments, the graphene film can range from being a discrete conductor to a highly resistive material, depending on the externally applied voltage. As experimental evidence, it is verified that the application of a proper voltage through two bias tees changes the surface resistivity of graphene, and induces a significant change of insertion loss of the microstrip attenuator.
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broadband-microwave-attenuator-based-on-few-layer-graphene-flakes_.\PDF_AAM20152019VQR\WOS_000359370900011AAM.pdf
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| Data volume | 77.0 MB | 77.0 MB |
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- Publication date:
- June 17, 2015
- DOI:
-
- Keyword(s):
- AAM 20152019VQR
- Related identifiers:
- Compiles:
10.1109/TMTT.2015.2441062 - Communities:
- License (for files):
- Creative Commons Attribution 4.0