| Autor: |
Andreea Ioanna Hadarig, Samuel Ver Hoeye, Miguel Fernandez, Carlos Vazquez, Leticia Alonso, Fernando Las-Heras |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 7, Pp 113151-113160 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2019.2935310 |
| Popis: |
In this work, a graphene-based single-stage high-order subharmonic mixer is presented. The device is able to up- and downconvert a signal in the 330-500 GHz frequency range, using a local oscillator signal with frequency located in the 26-40 GHz band. It exploits the strong nonlinear electromagnetic behavior exhibited by macroscopic graphene sheets when they are exposed to an incident electromagnetic wave to generate the output signal as a mixing product between the input signal and a high-order harmonic component of the local oscillator, which is internally generated without requiring additional circuitry. A prototype was implemented and its performance was experimentally characterized considering several different local oscillator multiplication orders. The maximum measured downconversion gain is around -50 dB, whereas the maximum output signal reached when working as upconverter is -43 dBm at 340 GHz and -63 dBm at 480 GHz. These values are good enough to be used in practical short-range applications. Furthermore, the measurement results are in good agreement with the theoretical predictions about graphene behavior. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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