Precision mmWave routing networks—operating from 26 GHz to beyond 90 GHz—demand exceptional electromagnetic uniformity, controlled impedance, and stable mode behavior to maintain system linearity. RT/duroid 5880 PCB materials have become a foundational high-frequency laminate for mmWave architectures because their ultra-low dielectric constant (Dk ≈ 2.20), extremely low dissipation factor (Df ≈ 0.0009), and isotropic PTFE...



