LNB substarte

Low-noise blocks LNB converters for satellite Ku-Band use materials like GaAs PHEMT which is pseudomorphic high-electron-mobility transistor technology materials. I do not know how they make them.

It is just custom materials for a low noise figure minimum of 0.5dB.

no i am asking about the PCB material used for tis frequency range

thanks

It's most likely to be some PTFE and fiber glass composite so via holes can be manufactured with reliability.