Numerical and Experimental Dielectric Investigation of Heterogeneous Electronic Waste Derived Cost-Effective Composite for Stealth Applications

Abstract

In this work, a proactive attempt is made for numerical and experimental investigation of frequency-dependent dielectric characteristics of a new kind of electronic waste-derived heterogeneous composites. The fabrication of the samples of these composites is accomplished by adopting a robust and inexpensive top-down fabrication strategy. The dielectric characterization of samples is carried out using a waveguide measurement method in the range of 8.2 to 12.4 GHz (X-band). Besides, the Double Debye model (DDM) parameters are evaluated to track the experimentally measured dielectric properties of the samples. The meta-heuristic Jaya's algorithm is organized for effective assessment of design variables for the single-layer structure under specific restrictive conditions. The proficient consistent value of the real part of permittivity is observed to be 27.1 at X-band, while a maximum dielectric loss tangent of 0.43 is achieved at 8.2 GHz. The proposed work reveals that electronic waste composites have an enormous capacity in the development of lightweight and broadband stealth structures.