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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lancaster, Mj
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2022D-band waveguide diplexer fabricated using micro laser sinteringcitations
- 2022Compact monolithic SLM 3D-printed filters using pole-generating resonant irisescitations
- 20213D printed re-entrant cavity resonator for complex permittivity measurement of crude oilscitations
- 2021Two‐GHz hybrid coaxial bandpass filter fabricated by stereolithography 3‐D printing
- 20213D printed coaxial microwave resonator sensor for dielectric measurements of liquidcitations
- 2020180 GHz Waveguide Bandpass Filter Fabricated by 3D Printing Technologycitations
- 201990 GHz Micro Laser Sintered Filter: Reproducibility and Quality Assessmentcitations
- 2018W-Band Waveguide Bandpass Filters Fabricated by Micro Laser Sinteringcitations
- 2018Microwave filters based on novel dielectric split-ring resonators with high unloaded quality factorscitations
- 2016Permittivity and loss characteristics of SU8-quartz composite photoresist at THz frequenciescitations
- 2016W-Band waveguide filters fabricated by laser micromachining and 3-D printingcitations
- 2014Uncertainties in the permittivity of thin films extracted from measurements with near field microwave microscopy calibrated by an image charge modelcitations
- 2009Two-dimensional growth of SrTiO3 thin films on (001) MgO substrates using pulsed laser deposition and reflection high energy electron diffractioncitations
- 2009Comparison of scanning evanescent microwave microscopy with co-planar waveguide methods of characterization of BaSr TiO thin films
- 2009Comparison of structural, microstructural, and electrical analyses of barium strontium titanate thin filmscitations
- 2008BaxSr1 - xTiO3 Thin Films for Tunable Microwave Devices in Cryogenic and Room Temperature Applicationcitations
- 2007Fabrication and characterisation of barium strontium titante thick film device structures for microwave applicationscitations
- 2007Optical properties of barium strontium titanate (BST) ferroelectric thin filmscitations
- 2007Fabrication and Characterisation of Barium Strontium Titanate Thick Film Device Structures for Microwave Applicationscitations
- 2006Temperature Dependent Dielectric Properties of Coplanar Phase Shifters Fabricated from Ba₀.₅SR₀.₅Ti0₃ Thin Filmscitations
- 2006Microwave and Microstructural Properties of Ba₀.₅Sr₀.₅TiO₃ of Thin Film Coplanar Phase Shifterscitations
- 2004High frequency thick film BST ferroeclectric phase shiftercitations
- 2004Growth, Microwave Properties and Microstructure of Ba₀₊₀₅Sr₀₊₉₅TiO₃ Thin Filmscitations
- 2003A High Temperature Superconducting Butler Matrixcitations
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article
Fabrication and Characterisation of Barium Strontium Titanate Thick Film Device Structures for Microwave Applications
Abstract
Tunable capacitor elements for microwave phase shifter applications have been fabricated by screen printing barium strontium fitanate (BST) films on alumina substrates. A Ba0.70Sr0.30TiO3 Composition was chosen for the initial devices as it has been shown to exhibit high tunability at room temperature. A vertical capacitor test structure involving a Pt lower electrode, BST film and Ag top electrode has been used throughout the work. The tunability and figure of merit (phase shift/dB of insertion loss) at 2-3 GHz were found to be strongly dependent on the sintering temperature of the BST layers, with properties improving as the sintering temperature was increased. However, for sintering temperatures > 1280 degrees C, the device properties could not be measured, possibly indicating a problem with the lower Pt electrodes. In order to reduce the sintering temperature required for densification, test structures have also been fabricated using other BST compositions to which sintering aids have been added. Finally, a reflection-type phase shifter (RTPS) based on the capacitor test structure and optimised processing conditions is presented with microwave measurements results. (c) 2006 Elsevier Ltd. All rights reserved.