I thought some of you might find this news item to be of interest:
"Engineers Develop World's Most Complex RFIC For SATCOM And Radar Applications".
It concerns an IC that implements a 4x4 transmit array at ~50 GHz using a new RFIC developed at UCSD.
To read the entire news article, see http://www.semiconductoronline.com/read/sp20071107/662570.
I wonder if any of our San Diego compatriots (Phil or Franklin especially) have any contact with these folks --
perhaps we might get them involved in developing a 5x or 10x scaled lower frequency version?

73, Tom