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Expanded graphite monopole antenna printed on flexible paper substrate for 2.4 GHz wireless systems
International Journal of Microwave and Wireless Technologies  (IF1.064),  Pub Date : 2021-07-21, DOI: 10.1017/s1759078721001136
Ahmed A. Abdel Aziz, Ali T. Abdel-Motagaly, Ahmed A. Ibrahim, Waleed M. A. El Rouby, Mahmoud A. Abdalla

In this work, a printed coplanar waveguide (CPW) fed single band antenna based on expanded graphite material is introduced. The proposed antenna is based on a CPW-monopole antenna with a U-shape conductor strip connected with the ground. Expanded graphite, a grade of graphene, is used as a conductor to design the uniplanar antenna over a flexible paper substrate. The antenna is designed for 2.4 GHz applications. The antenna design procedures are discussed. The material preparation and analysis are illustrated. Finally, the antenna fabrication and measurements of the reflection coefficient are discussed. The measured antenna reflection coefficient agrees with the simulated one, ensuring the antenna validity for serving the required applications. The radiation antenna parameters are discussed and simulated results from two-simulation software are included for comparison. The antenna has a simulated gain of 4 dBi and simulated efficiency of around 90% at 2.4 GHz.