Sustainable X-Band Microwave Absorber Using Tea Waste and Recycled Carbon Composites

Title

Sustainable X-Band Microwave Absorber Using Tea Waste and Recycled Carbon Composites

Creator

Kumar, Naveen; Koohestani, Mohsen; Roy, Sourav; Murthy, Hari

Description

This paper introduces an innovative eco-friendly flat microwave absorber designed for X-band applications, utilizing plant waste and recycled materials, thereby contributing to a circular economy. The composite material is composed of 75 % used tea powder and 25 % carbon sourced from discarded batteries. The electromagnetic (EM) absorption performance of the proposed composite has been characterized, revealing enhanced absorption capabilities, averaging around 26.2 % for a thickness of 5 mm, compared to a 100 % tea waste configuration across the X-band frequency range. Furthermore, the results indicate that EM absorption improves with increasing frequency. The environmental advantages of this composite, including waste reduction and a minimal carbon footprint, position it as an attractive alternative to conventional RF absorbers. This sustainable solution shows promise for applications in EM interference shielding and microwave energy harvesting. 2025 European Association on Antennas and Propagation.

Source

EuCAP 2025 - 19th European Conference on Antennas and Propagation;

Date

01-01-2025

Publisher

Institute of Electrical and Electronics Engineers Inc.

Subject

Microwave absorber; recycled battery carbon; sustainable; tea waste; X-band

Coverage

Kumar N., Eced, School of Engineering and Technology, Christ University, Bangalore, India; Koohestani M., ole Supieure d'ectronique de l'Ouest (ESEO), Angers, 49107, France; Roy S., Eced, School of Engineering and Technology, Christ University, Bangalore, India; Murthy H., Eced, School of Engineering and Technology, Christ University, Bangalore, India

Rights

Restricted Access; Hardcopy may be available in the library

Relation

ISBN: 978-883129910-7;

Format

online

Language

English

Type

Conference paper

Identifier

https://doi.org/10.23919/EuCAP63536.2025.11000026

https://www.scopus.com/pages/publications/105007515129?origin=resultslist