| 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 comprises a liquid crystal compound of the formula I wherein the parameters have the respective meanings given in the claims or in the text, or contains a liquid-crystal medium which in turn contains one or more compounds of this formula I, and the corresponding new liquid-crystal media, their use and preparation, as well as the preparation and the Use of the components. The components according to the invention are particularly suitable as phase shifters in the microwave and millimeter-wave range, for microwave and millimeter-wave array antennas and very particularly for so-called tunable reflectarrays. |