What EMI Gaskets Meet 5G mmWave Requirements? Materials and Designs for High-Frequency EMI Shielding
At millimeter-wave frequencies, even a hairline seam is large enough to behave like a slot antenna; this counterintuitive fact makes EMI sealing an engineering challenge that many designers underestimate. When wavelengths shrink to a few millimeters, common enclosure gaps become radiators and conventional gaskets suddenly fall short. Engineers facing this new reality need to rethink how they seal high-frequency electronics and recognize that EMI shielding is as much about seam geometry as it is about material choice. In practice, only a handful of solutions meet these demanding requirements. Highly conductive elastomers and oriented-wire composites provide the necessary attenuation above 10 GHz. Success depends as much on joint preparation and profile selection as on the compound itself. The question of which EMI gaskets meet 5G mmWave requirements has a clear answer: choose materials with proven 90–110 dB performance at...