The CAE lab version of ADS allows academic research, however, research with outside funding is not allowed. 
Students may install Agilent on their own machines through the Student License Program. The student version prohibits research. Information can be found here: http://www.keysight.com/main/editorial.jspx?cc=US&lc=eng&ckey=2175659&nid=-34360.0.02&id=2175659

Advanced Design System is the world's leading electronic design automation software for RF, microwave, and high speed digital applications.