研究目的
Investigating the design and performance of a tunable attenuator based on graphene-loaded coupled microstrip lines for microwave applications.
研究成果
The proposed graphene-based tunable attenuator demonstrates a favorable attenuation tuning range from 3 to 20 dB at 1 to 6 GHz, with a compact size of 38 mm × 22 mm. It maintains a low reflection coefficient and stable phase, making it suitable for various communication systems. The study highlights the potential of graphene in designing efficient and compact microwave attenuators.
研究不足
The study is limited to the operating frequency range from 1 to 6 GHz and the specific design of the graphene-loaded attenuator. The fabrication complexity and the need for precise control of graphene's surface impedance are also potential limitations.
1：Experimental Design and Method Selection:
The study involves the design of a tunable attenuator using graphene-loaded coupled microstrip lines, analyzing its mechanism, and verifying through fabrication and testing.
2：Sample Selection and Data Sources:
A prototype attenuator was fabricated and tested to validate the theoretical analysis.
3：List of Experimental Equipment and Materials:
Graphene, microstrip lines, substrate materials (εr = 3.2, h = 1.575 mm), and measurement equipment for S-parameters.
4：2, h = 575 mm), and measurement equipment for S-parameters.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The attenuator's performance was evaluated by measuring its attenuation tuning range, reflection coefficient, and phase stability across the operating frequency.
5：Data Analysis Methods:
The analysis involved comparing simulated and measured results to validate the design and performance of the attenuator.
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