High-PCBs zaus feem ntau yog ua los ntawm cov khoom siv nrog cov dielectric siab thiab qis siab - zaus poob. Tam sim no, fluorinated dielectric substrates, xws li polytetrafluoroethylene (PTFE, feem ntau hu ua Teflon), yog dav siv nyob rau hauv siab - ntawv thov zaus saum 5 GHz vim lawv ua tau zoo heev. FR-4 lossis PPO substrates kuj tseem siv rau cov khoom lag luam ntawm 1 GHz thiab 10 GHz.


