Terahertz Dielectric Characterization of Low-Loss Thermoplastics for 6G Applications

Common thermoplastics, namely, polycarbonate (PC), poly (methyl methacrylate) (PMMA), and acrylonitrile butadiene styrene (ABS) are low-cost materials with potential applications in emerging 6G communications systems, ranging from microelectronics packaging to metasurfaces for reflectors filters. In addition, low-loss also needed more pedestrian applications, such as entire handheld devices, subassemblies, high-frequency windows where is key long lifetime might not be a requirement. this work, we utilize terahertz time-domain spectroscopy 500 GHz 2 THz characterize the dielectric properties loss tangent each thermoplastic above. The plastics investigated have refractive index ( $$\sim$$ 1.6–1.7) band low dispersion. absorption, however, increases at high frequencies common disordered materials, highlighting challenge 6G. Nonetheless, absolute terms, all thermoplastics studied present performance compared (higher–index) glasses ceramics within frequency range, suggesting that they promising candidates selected future systems.