UCSD DARPA Smart Q-Band 4x4 Array Transmitter (IMAGE) University of California - San Diego Caption The UCSD DARPA Smart Q-Band 4x4 Array Transmitter, the world's most complex silicon phased-array chip was developed in the lab of UC-San Diego electrical engineering professor Gabriel Rebeiz. Credit Gabriel Rebeiz / UC San Diego Usage Restrictions Mandatory credit: Gabriel Rebeiz / UC San Diego License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.