Events Calendar

Integrated Systems Seminar Series - Spring 2014

Speaker: Mark Field, Teledyne

Talk Title: Low loss millimeter-wave switches based on the Vanadium Dioxide Metal - Insulator - Transition

Abstract: A new ultra-low-loss and broad band millimeter wave switch technology based on the reversible metal/insulator phase transition of vanadium dioxide has been developed. We report having fabricated series configured, single-pole single-throw (SPST) switches having measured S-parameters from DC to 110 GHz. The on-state insertion loss is 0.2 dB and off-state isolation is 21 dB at 50 GHz. The resulting impedance contrast ratio, ZOFF / ZON, is greater than 500:1 at 50 GHz (i.e. cut-off frequency fc ~ 40 THz). As a demonstration of the technology's utility, we also present the results of a 2-bit real time delay phase shifter incorporating a pair of VO2 SP4T switches. This switch technology's high impedance contrast ratio combined with its compactness, ease of integration, and low voltage operation make it an enabler of previously unachievable high-performance millimeter wave FPGAs.

Biography: Mark Field was awarded a bachelors degree in physics and theoretical physics from the University of Cambridge, United Kingdom, in 1986, and a masters degree in microelectronics and computer engineering from the University of Surrey, United Kingdom. In 1988 he returned to Cambridge University to study for a Ph.D., performing research into single electron devices in the semiconductor physics group at the Cavendish laboratory under Professor Michael Pepper. Dr. Field earned the Ph.D. in experimental physics in December 1991 and was awarded a research fellowship at Trinity Hall Cambridge.
In 1996 he moved to the University of California at Santa Barbara, and worked as a postdoctoral researcher with Professor David Awschalom on magnetic force microscopy of nanoscale magnets. Dr. Field subsequently joined Symyx Technologies, a startup company in Santa Clara California, where he worked on combinatorial materials science, using high throughput synthesis and measurement to discover new magnetic materials. In October 2000 Dr. Field joined Teledyne Scientific (formerly Rockwell) in Thousand Oaks California as a senior scientist. His currently interests include nanoscale electronics and phase change materials.


Host: Hossien Hashemi, Mike Chen, Mahta Moghaddam, Sushil Subramanian

More Info: http://mhi.usc.edu/activities/integrated-systems/

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Sushil Subramanian

Event Link: http://mhi.usc.edu/activities/integrated-systems/