# Processes [GaN](../RF%20Chip%20Design/GaN.md) [GaAs](../RF%20Chip%20Design/GaAs.md) [Silicon-on-sapphire](../RF%20Chip%20Design/Silicon-on-sapphire.md) [CMOS](../RF%20Chip%20Design/CMOS.md) [UltraCMOS](../RF%20Chip%20Design/UltraCMOS.md)