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Voltage-Tunable Thin Film Graphene-Diode-Based Microwave Harmonic Generator | IEEE Journals & Magazine | IEEE Xplore

Voltage-Tunable Thin Film Graphene-Diode-Based Microwave Harmonic Generator


Abstract:

This work presents the design, implementation, and characterization of the first thin-film integrated tunable microwave harmonic generator. The design is realized by expl...Show More

Abstract:

This work presents the design, implementation, and characterization of the first thin-film integrated tunable microwave harmonic generator. The design is realized by exploiting the nonlinearity of four chemical vapor deposition (CVD) graphene-based diodes arranged in a nonlinear transmission-line (NLTL) approach. The used thin-film monolithic microwave integrated circuit (MMIC) technology is substrate independent. The fabricated prototype is realized on a 500- \mu \text{m} transparent quartz substrate and occupies less than 1.2 mm2 of chip area including pads. Measurement results show a wide input frequency range from 0 to 2.8 GHz with measured S_{11} better than −10 dB. The measured second-harmonic conversion gain (CG) for an output frequency of 3.4 GHz is −21.6 dB. The measured third-harmonic CG for an output frequency of 3.15 GHz is −31 dB. To the best knowledge of the authors, the proposed circuit is the first tunable microwave harmonic generator combining graphene diodes in a NLTL topology on thin-film technology.
Published in: IEEE Microwave and Wireless Components Letters ( Volume: 31, Issue: 6, June 2021)
Page(s): 733 - 736
Date of Publication: 23 February 2021

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