Abstract: A method for determining a beamforming vector or a beamforming channel matrix in a communication system including a transmitting station and a receiving station, and a communication system. The transmitting and receiving stations include respective antenna groups and respective codebooks include a plurality of predefined beamforming vectors for the antenna group.

Abstract: The present invention relates to silicic acid (hetero) polycondensates comprising structural units of a following formula (1) wherein radicals, indices, and bonding symbols have the following meaning: R1 refers to a group that is accessible to a thiol-ene polyaddition when a thiol is added and can also be polymerized by a ROMP (ring opening metathesis polymerization), R2 is selected from (a) organically polymerizable groups that are available to a thiol-ene polyaddition when a thiol is added, but not to a ROMP, (b) —COOR8 with R8 equal to R4 or M1/xx+, (c) —OH or COOH, and (d) —(O)bP(O)(R5)2, wherein b is equal to 0 or 1, —SO3M1/xx+, NR72 or NR7+3, wherein Mx+ is an x-fold positively charged metal cation, R4 is a non-substituted or substituted hydrocarbon radical, the radicals R5 independently represent a non-substituted or substituted hydrocarbon radical or OR6 and R6 is hydrogen or a non-substituted or substituted hydrocarbon radical, R7 has either the same meaning as R4 or two radicals R7 together repr

Abstract: A micromechanical element includes a plate-shaped micromechanical functional element, an inner frame and an outer frame. Thereby, a curvature of a main face of the plate-shaped micromechanical functional element is variable. The inner frame encloses the plate-shaped micromechanical functional element along an edge of the main face and is connected to the plate-shaped micromechanical functional element via a plurality of connecting pieces. The outer frame is connected to the inner frame via at least two holding elements. The inner frame is connected to the plate-shaped micromechanical functional element and the outer frame, such that a first angle between the main face of the plate-shaped micromechanical functional element and a main face of the inner frame is smaller than a second angle between a main face of the outer frame and the main face of the inner frame, when the main face of the plate-shaped micromechanical functional element is in a bent state.

Abstract: The present invention relates to a method for producing a material suitable for producing ceramic oxide coatings, comprising the following steps: (a) preparing at least one first compound of a metal cation, selected from the cations of manganese, cerium, gadolinium, and/or yttrium, having at least one organic anion or an anion comprising an organic part, (b) dissolving or suspending the compound(s) prepared according to (a) in a protic, hydrolytically active solvent, such that the compound(s) is (are) present in a completely dissolved or colloidally dispersed form, (c) heating the suspension or solution thus formed in a closed vessel to at least 80° C., and (d) expanding and cooling the suspension or solution thus formed. Using said method, amorphous macromolecules are obtained, comprising molecular or polycyclic complexes having a primary particle size of <1 nm and an agglomerate size of 5 to 120 nm, preferably 10 to 80 nm.