Can we do any Plasma cleaning on the HMC-ALH509? Can we place it under vacuum?
On unrelated note, why is there an air-bridge on the device?
Which manufacture of Alumina did you use for characterization?
The HMC-ALH509 can be plasma cleaned. The air bridges are part of the GaAs HEMT fabrication process. When you ask about vacuum, are you referring to picking the die with a vacuum tip? The air-bridges are fairly robust but can be damaged if not vacuum picked properly. With proper technique and care the die can be vacuum picked.