DocumentCode
1533416
Title
Microwave study of tunable planar capacitors using mn-doped ba0.6sr0.4tio3 ceramics
Author
Laur, Vincent ; Costes, Romain ; Houndonougbo, Fiffamen ; Madrangeas, Valérie ; Cros, Dominique ; Paté, Michel ; Ganne, Jean-Pierre
Author_Institution
Research Institute XLIM UMR 6172, Universite de Limoges/Centre National de la Recherche Scientifique (CNRS), Limoges, France
Volume
56
Issue
11
fYear
2009
fDate
11/1/2009 12:00:00 AM
Firstpage
2363
Lastpage
2369
Abstract
This paper deals with the microwave study of coplanar tunable capacitors using Mn-doped Ba0.6Sr0.4TiO3 ceramics. These ceramics are developed to improve performance at microwave frequencies (i.e., compromise between tuning capabilities and insertion losses). Interdigitated capacitors were first fabricated on thick Mn-doped BST ceramics. The capacitors showed reduced tuning factor because of a parasitic capacitance between the contact pads. The use of Mn-doped BST/ SiO2 bilayers led to a significant enhancement of the capacitor performance (57% of agility under 200 V at 1 GHz).
Keywords
Binary search trees; Capacitors; Ceramics; Dielectric losses; Dielectric measurements; Fingers; Impedance; Permittivity measurement; Temperature; Voltage; Ceramics; Electric Capacitance; Electronics; Equipment Design; Equipment Failure Analysis; Materials Testing; Microwaves;
fLanguage
English
Journal_Title
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher
ieee
ISSN
0885-3010
Type
jour
DOI
10.1109/TUFFC.2009.1324
Filename
5306718
Link To Document