| abstract |
The present invention relates to a component for the high-frequency technology, or for the microwave range and millimeter-wave range of the electromagnetic spectrum, characterized in that it contains a liquid-crystal medium which consists of one or more compounds which comprise one or more compounds having 6 to 15 , six- or seven-membered rings, preferably containing 1,4-linked phenylene rings, or that it contains a liquid-crystal medium, which in turn contains a component A, which in turn consists of one or more of said compounds containing one or more compounds, the 6 bis 15 five-, six- or seven-membered rings, preferably containing 1,4-linked phenylene rings exists. The present invention also relates to compounds of the formula I. wherein the parameters have the meanings given in the text, as well as the corresponding new liquid-crystal media, their use and manufacture, as well as the manufacture and use of the components. The components according to the invention are particularly suitable for phase shifters in the microwave and in the millimeter-wave range, for microwave and millimeter-wave array antennas and very particularly for so-called tunable reflectarrays. |