石墨烯
衰减器(电子)
材料科学
微带线
电阻式触摸屏
光电子学
微波食品加热
插入损耗
电阻器
制作
导电体
光衰减器
电压
宽带
电子工程
电气工程
光学
衰减
纳米技术
电信
复合材料
工程类
物理
病理
医学
替代医学
光纤传感器
纤维
作者
Luca Pierantoni,Davide Mencarelli,Maurizio Bozzi,Riccardo Moro,Stefano Moscato,Luca Perregrini,F. Micciulla,Antonino Cataldo,Stefano Bellucci
出处
期刊:IEEE Transactions on Microwave Theory and Techniques
日期:2015-08-01
卷期号:63 (8): 2491-2497
被引量:115
标识
DOI:10.1109/tmtt.2015.2441062
摘要
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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