Superconducting YBa2Cu3O7−x thin films on polycrystalline ferrite for magnetically tunable microwave components

1998 ◽  
Vol 72 (14) ◽  
pp. 1763-1765 ◽  
Author(s):  
Q. X. Jia ◽  
A. T. Findikoglu ◽  
P. Arendt ◽  
S. R. Foltyn ◽  
J. M. Roper ◽  
...  
Keyword(s):  
Thin Films ◽  
Polycrystalline Ferrite ◽  
Microwave Components ◽  
Tunable Microwave

HTS/ferroelectric thin films for tunable microwave components

1995 ◽  
Vol 5 (2) ◽  
pp. 3191-3194 ◽  
Author(s):  
F.A. Miranda ◽  
C.H. Mueller ◽  
C.D. Cubbage ◽  
K.B. Bhasin ◽  
R.K. Singh ◽  
...  
Keyword(s):  
Thin Films ◽  
Ferroelectric Thin Films ◽  
Microwave Components ◽  
Tunable Microwave

Evaluation of Ferroelectric BaxSr1−xTiO3 Thin Films Driven by Phase Shifters for Reflectarray Applications

2000 ◽  
Vol 656 ◽  
Author(s):  
F. A. Miranda ◽  
C. H. Mueller ◽  
F. W. Van Keuls ◽  
R. R. Romanofsky
Keyword(s):  
Thin Films ◽  
Phase Shifters ◽  
Ferroelectric Thin Films ◽  
Performance Criteria ◽  
Evaluation Methodology ◽  
X Ray Diffraction ◽  
Subsequent Performance ◽  
Microwave Components ◽  
Tunable Microwave ◽  
Rf Performance

ABSTRACTThe application of ferroelectric thin films for the development of frequency and phase agile microwave components has been the reason behind very encouraging demonstrations of tunable microwave devices in recent years. Thus, one could conclude with basically a general consensus, that the question of the suitability of thin film ferroelectric technology for the fabrication of superior tunable microwave components has been already answered in a favorable way. However, what is still pending in regards to the validation of this technology is the development of evaluation methodologies to set forth the standards for the material quality and subsequent performance criteria of specific components and devices based on this technology. In this paper we discuss the evaluation methodology under implementation at NASA Glenn Research Center aimed at identifying and optimizing the most relevant parameters of BaxSr1−xTiO3 (BSTO) ferroelectric thin films (i.e., tunability, losses, thickness, crystalline quality, etc.) as defined by a specific microwave application (in our case, phase shifters for reflectarray antennas). Results of our material analysis based on X-ray diffraction and ellipsometry, and how these properties correlate with RF performance for a targeted circuit, will be presented.

Tunable microwave mixing in nonlinear dielectric thin films of SrTiO3 and Sr0.5Ba0.5TiO3

1995 ◽  
Vol 31 (21) ◽  
pp. 1814-1815 ◽  
Author(s):  
A.T. Findikoglu ◽  
D.W. Reagor ◽  
Q.X. Jia ◽  
X.D. Wu
Keyword(s):  
Thin Films ◽  
Dielectric Thin Films ◽  
Nonlinear Dielectric ◽  
Tunable Microwave

Design and development of ferroelectric tunable microwave components for Kuand K-band satellite communication systems

2000 ◽  
Vol 48 (7) ◽  
pp. 1181-1189 ◽  
Author(s):  
F.A. Miranda ◽  
G. Subramanyam ◽  
F.W. van Keuls ◽  
R.R. Romanofsky ◽  
J.D. Warner ◽  
...  
Keyword(s):  
Communication Systems ◽  
Satellite Communication ◽  
Design And Development ◽  
Microwave Components ◽  
Tunable Microwave ◽  
K Band

Ba x Sr 1 − x TiO 3 Thin Films for Tunable Microwave Devices in Cryogenic and Room Temperature Application

2008 ◽  
Vol 367 (1) ◽  
pp. 170-178 ◽  
Author(s):  
P. M. Suherman ◽  
H. T. Su ◽  
T. J. Jackson ◽  
F. Huang ◽  
M. J. Lancaster
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Microwave Devices ◽  
Tunable Microwave ◽  
Temperature Application
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