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Recent Advances in Microwave Applications of Thin Ferroelectric Films at the NASA Glenn Research Center

Published online by Cambridge University Press:  01 February 2011

Robert R. Romanofsky ,
Felix A. Miranda ,
Fred W. Van Keuls  and
Matthew D. Valerio
Robert R. Romanofsky
Affiliation:
NASA Glenn Research Center, Cleveland, OH
Felix A. Miranda
Affiliation:
NASA Glenn Research Center, Cleveland, OH
Fred W. Van Keuls
Affiliation:
Ohio Aerospace Institute, Brookpark, OH
Matthew D. Valerio
Affiliation:
Ohio Northern University, Ada, OH
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Abstract

We report on recent developments in microwave applications and understanding of thin Ba50Sr50TiO3 films. Most of our recent efforts have focused on developing low loss, wide band phase shifters from X-band (8.4 GHz) to Ka-Band (26.5 GHz) for scanning reflectarray antennas. Attempts to reduce tanδ by Mn-doping Ba50Sr50TiO3 films are briefly discussed. We have demonstrated a hybrid device at X-band that produces in excess of 300 degrees of phase shift with about 3.5 dB insertion loss and greater that 10% bandwidth. Preliminary results are presented here. The effects of mild (600 rad Si) proton radiation on device performance will also be discussed. Preliminary results on optical phase shifters will be included.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 833: Symposium G – Materials, Integration, and Packaging Issues for High-Frequency Devices II , 2004 , G5.1
Copyright
Copyright © Materials Research Society 2005

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References

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