1. Engineering Overview Next-generation 5G base stations require high-density, miniaturized RF front-end modules with low insertion loss, precise impedance, and stable phase performance across mmWave bands (28–39 GHz). PTFE PCB laminates, with Dk = 2.15 ± 0.02 and Df = 0.0009 @10GHz, provide superior dielectric consistency and thermal stability for tightly packed MIMO...











