Jaya’s Algorithm Derived Cavitation Inspired Lightweight and Broadband Microwave Absorbing Structure

In recent years, there has been a lot of interest in the quest for low-cost pragmatic microwave absorbing structures (MAS) to deplete electromagnetic (EM) waves. To strengthen electronic waste (e-waste) treatment and explore broadband absorber structure, two diverse MASs are proposed and modelled with the magneto-dielectric properties of e-waste composite. The investigation of proposed structures is carried out in 8.2 to 12.4 GHz (i.e., X-band). The thin and wideband multilayered MAS is optimized with the help of multi-objective Jaya’s optimization algorithm. As an outcome, a reflection coefficient (RC) of -13.8 dB is achieved in 2.3mm thick grid type MAS at 10.4GHz exhibiting a -10dB bandwidth of 3.6 GHz. Furthermore, a biased square empty cavitation structure yields much better recognizable outcomes, accomplishing 100% BW with a coating thickness of 2.0mm. These optimized MASs are also examined against various oblique angles of incidence. The full-wave simulation is utilized for the validation of optimized results and both are found in good agreement with each other. The addition of a square air gap in the structure regulates the composite EM characteristics at a higher frequency. It demonstrates that the cavitation approach has magnificent advantages for the creation of wideband, lightweight, and low expense MASs for the stealth technology.