Millimeter-wave Circulator on a Chip (video) Columbia University School of Engineering and Applied Science Share Print E-Mail Loading video... Caption This is a video describing the principles of operation of the first millimeter-wave non-reciprocal circulator implemented on a silicon chip. The circulator uses synchronized switching around transmission-line delays to achieve non-reciprocity. Credit Tolga Dinc, Aravind Nagulu, and Molgraphics for Columbia Engineering Usage Restrictions Please use the credit line: Tolga Dinc, Aravind Nagulu, and Molgraphics for Columbia Engineering Share Print E-Mail 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.