Piezoelectric Microresonator Devices: Enabling Frequency Agile and Adaptive
Radios
Monday, February 17, 2014 - 8:45am - 10:00am
KEC 1007
Roy Olsson
Principal Electronics Engineer
MEMS Technologies Department
Sandia National Laboratories
Abstract:
The radio frequency (RF) spectrum is becoming increasingly crowded, with more
users accessing an increasing amount of bandwidth. As a result, wireless handsets
are experiencing a rapid increase in the number of frequencies and standards
supported on a single platform. While the other components that comprise the RF
front-end such as amplifiers, mixers and switches are experiencing higher levels
of co-integration, a modern cellular radio includes > 30 discrete filter dies
to accommodate the growing number of RF bands. A miniature and adaptive filter
technology that supports many wireless standards on a single chip is needed to
continue the increase in wireless data and functionality seen over the past decade.
Piezoelectric microresonators are an enabling technology for increasing
adaptability, improving performance and miniaturization of RF devices. This
talk will present an overview of piezoelectric microsystems research at Sandia
National Laboratories. First, the need for adaptive and reconfigurable
frequency control components in next generation wireless devices will be
described. The performance and adaptability advantages derived from
micromachining of piezoelectric resonators will be presented, followed by a
comparison with incumbent technologies. Filter and oscillator arrays realized
in thin film aluminum nitride will be presented along with the application of
these components in adaptive wireless systems. Monolithic integration of
piezoelectric resonators with integrated circuits to form oscillators and
switched filter arrays will be demonstrated. Finally, a look toward next
generation piezoelectric materials and devices such as thin film lithium
niobate resonators, tunab!
le acoustic filters and reconfigurable time domain signal processors will be
presented.
Speaker Biography:
Roy H. Olsson III is a Principal Electronics Engineer in the MEMS Technologies Department at Sandia National Laboratories in Albuquerque, NM. He received B.S. degrees (Summa Cum Laude) in electrical engineering and in computer engineering from West Virginia University in 1999 and the MS and Ph.D. degrees in electrical engineering from the University of Michigan, Ann Arbor in 2001 and 2004.
At Sandia Roy leads research programs in the areas of piezoelectric micro-devices
such as RF microresonators, oscillators and filters, inertial sensors, phononic
crystals and acousto-optic modulators. Roy has co-authored 25 journal and 68
conference papers and holds 16 patents in the area of MEMS and microelectronics.
Roy served on the organizing committee of the 2011 Phononics Conference and has
been a member of the Technical Program Committee for the IEEE Ultrasonics Symposium
(IUS) since 2010. Roy is a member of the IEEE Solid State Circuits Society, IEEE
Ultrasonics, Ferroelectrics, and Frequency Control Society, Eta Kappa Nu, and Tau
Beta Pi. Roy won 1st place in the conceptual category and best overall paper at the
2002 Design Automation Conference Student Design Contest. Roy was the recipient of
the Sandia Up and Coming Innovator Award in 2011 and a 2013 Sandia Inventor Award.
Together with the Sandia Microresonator Research Team, he was awarded an R&D100
award in 201!
1 for his work on Microresonator Filters and Frequency References.
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