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Room Temperature Thin Film Ba(x)Sr(1-x)TiO3 Ku-Band Coupled MicrostripPhase Shifters: Effects of Film Thickness, Doping, Annealing and Substrate ChoiceWe report on measurements taken on over twenty Ku-band coupled microstrip phase shifters (CMPS) using thin ferroelectric films of Ba(x)Sr(1-x)TiO3. This CMPS design is a recent innovation designed to take advantage of the high tunability and tolerate the high dielectric constant of ferroelectric films at Ku- and K-band frequencies. These devices are envisioned as a component in low-cost steerable beam phased area antennas, Comparisons are made between devices with differing film thickness, annealed vs unannealed, Mn-doped vs. undoped, and also substrates of LaAlO3 and MgO. A comparison between the CMPS structure and a CPW phase shifter was also made oil the same ferroelectric film.
Document ID
19990116713
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
VanKeuls, F. W.
(NASA Lewis Research Center Cleveland, OH United States)
Mueller, C. H.
(NASA Lewis Research Center Cleveland, OH United States)
Miranda, F. A.
(NASA Lewis Research Center Cleveland, OH United States)
Romanofsky, R. R.
(NASA Lewis Research Center Cleveland, OH United States)
Canedy, C. L.
(Maryland Univ. College Park, MD United States)
Aggarwal, S.
(Maryland Univ. College Park, MD United States)
Venkatesan, T.
(Maryland Univ. College Park, MD United States)
Ramesh, R.
(Maryland Univ. College Park, MD United States)
Horwitz, S.
(Naval Research Lab. Washington, DC United States)
Chang, W.
(Naval Research Lab. Washington, DC United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1999
Subject Category
Communications And Radar
Funding Number(s)
PROJECT: RTOP 632-50-5D
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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