Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
The P-1 dB is not a component parameter but system parameter.
Depends on the application you intend to use your amplifier.
\Due to small chip size and transistor features, at ~100 GHz such "power" amplifiers typically have P-1 dB point < +10 dBm. Special designs can have up to +20 dBm but it requires to use power splitters/combiners on the chip, and increases complexity and also potential instability.
At 100 GHz, if used for communication, systems can utilize antennas with a high gain, so power amplifiers do not need to generate high power level. In systems like radar, high power capability is welcome but costly to generate.
- - - Updated - - -
To Audioguru: Yes, there are many interesting systems that operate even higher, in THz range. Some also commercially available.