Abstract: A dual-polarized multiband antenna includes first and second radiating element modules having first and second dipole elements. First dipole elements are positioned at right angles to one another to transmit and/or receive radiation in the first frequency band range with two linear orthogonal polarizations. The dipole elements form a dipole square. The second radiating element module transmits or receives radiation in a second frequency band range higher than the first frequency band range. The second module has dipole elements orthogonally related to one another and aligned parallel or at right angles to the first dipoled elements. The second dipoles are arranged in a cruciform.

Abstract: A dual-polarized antenna system is provided for transmitting or receiving electromagnetic waves. The antenna system has at least one cruciform radiating element module that is aligned using dipoles or in the form of a patch radiating element, at angles of +45° and −45° with respect to vertical. The antenna system further has a conductive reflector arranged in the back of the at least one radiating element module. Two conductive side wall sections are provided on each side of the at least one radiating element and are disposed vertically. At least one slot is provided in each side wall section at the level of the radiating element module and extend in parallel to the reflector plane.

Abstract: Process of applying a self-adhesive film to a surface of an automobile or other vehicle. Later removal of the film is facilitated by first applying a parting layer to the surface, except for surface regions being covered by the perimeter and certain other areas of the self-adhesive film.

Abstract: An antenna array for simultaneous reception or for simultaneous transmission of electromagnetic waves having two linear, orthogonal polarizations has a decoupling device (17) between adjacent radiating element modules (1). This decoupling device is provided between two radiating element modules (1) which are adjacent in the attachment direction (21). The improvement is for a decoupling structural element (17) to be provided between two adjacent radiating element modules (1), which decoupling structural element (17) extends at least with its longitudinal component in the attachment direction (21), this longitudinal component having a length which is greater than or equal to 25% of the radiating element module separation (25) between the centers or bases (23) of the corresponding adjacent radiating element modules (1).

Abstract: A bioactive ceramic material for dental fillings and crowns on the basis of calcium phosphate compounds contains crystallites of sparingly water-soluble calcium phosphate compounds in an amorphous, vitreous or polycrystalline matrix of readily water-soluble calcium phosphate compounds, the Ca/P-atomic ratio of the calcium phosphate compounds being altogether <1.65.

Abstract: In order to create a directional antenna, in particular a dipole antenna, that is improved over the prior art, can be produced and is designed comparatively simply, and furthermore has further improved electrical properties, it is provided that the symmetrizer (7) is made from the material of the reflector (5), in that the symmetrizer (7) is cut from the remaining material of the reflector wall (5), except for a connecting segment (11), by suitable cuts and/or stamping operations, and preferably in the region of the immediate connecting point (11) with the remaining material of the reflector wall (5) is bent out relative to the plane of the reflector wall.