HELP! About 220GHz mixer

Yeah, how about giving some design specifications? :D

What's your application?

It's used as a downconverter on a radar receiver.
I want the parameters about it.
Have you got any?

see whether this helps u
What is your project?

It is for 140GHz but still u will get some information

Thank you!

I am serching communication system which works at frequency 180 GHz.
Do u have any information regarding this?