2011
DOI: 10.1007/s00542-011-1235-9
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Nonlinear ceramics for tunable microwave devices

Abstract: The research on materials and systems for tunable microwave devices has gained attraction within the last years. The radio frequency characterization and the component design of tunable microwave components based on dielectric ceramics especially barium-strontium-titanate (BST) are presented in this second part, whereas the basic material properties are discussed in detail in the first part. After a short introduction to the processing technology used for the fabrication of tunable components based on a BST th… Show more

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Cited by 25 publications
(9 citation statements)
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“…This difference can be explained by the higher quality of the lithographically patterned gold electrodes of the CPWs compared with the printed silver electrodes for the MIM varactor. However, the more homogeneous electric field distribution between the electrodes of the parallel‐plate MIM varactor in the thick film leads to a better tuning and geometry efficiency and therefore to a higher tunability compared with the CPWs . As a consequence, the required voltage for achieving high tunability is remarkably reduced.…”
Section: Comparison Of the Dielectric Properties Of Cuf‐bst‐5zb Thicksupporting
confidence: 61%
“…This difference can be explained by the higher quality of the lithographically patterned gold electrodes of the CPWs compared with the printed silver electrodes for the MIM varactor. However, the more homogeneous electric field distribution between the electrodes of the parallel‐plate MIM varactor in the thick film leads to a better tuning and geometry efficiency and therefore to a higher tunability compared with the CPWs . As a consequence, the required voltage for achieving high tunability is remarkably reduced.…”
Section: Comparison Of the Dielectric Properties Of Cuf‐bst‐5zb Thicksupporting
confidence: 61%
“…This processing allows the preparation of very uniform and narrow electrodes and a resolution that is usually less than 10 lm can be achieved. 3 However, due to the high cost of this process, the preparation of fully printed devices is desirable for cost sensitive applications. When thinking of inkjet-printed electrodes, one must keep in mind that the resolution of the inkjet printing process is considerably lower than a photolithographic structuring, which gives limitations regarding the minimum achievable capacitance.…”
Section: Inkjet-printed Capacitance Designmentioning
confidence: 99%
“…Ferroelectric ceramics are promising candidates for passive tunable devices such as phase shifters, tunablematching networks, tunable filters, and tunable anten-nas. [3][4][5][6] Currently, most attention is given to the solid solution Ba x Sr 1-x TiO 3 (BST). This is due to the fact that the material shows low dielectric loss and a considerable field dependency of permittivity (i.e., tunability).…”
Section: Introductionmentioning
confidence: 99%
“…Barium Strontium Titanate (Ba x Sr 1‐x TiO 3 , BST) has gained great attention as a tunable material for microwave devices such as phase shifters, tunable matching networks, filters, or antennas . It combines outstanding dielectric characteristics such as a strong field‐dependent permittivity (e.g., tunability) and an adequate dielectric loss.…”
Section: Introductionmentioning
confidence: 99%