Abstract: A multilayer ceramic component includes a stack containing ceramic layers and electrode layers interspersed among the ceramic layers. The electrode layers contain copper and define first and second internal electrodes. First and second external contacts are on different sides of the stack. The first and second external contacts contain copper and are substantially perpendicular to the ceramic layers and electrode layers. The first internal electrode is connected to the first external contact and the second internal electrode is connected to the second external contact. The first and second internal electrodes overlap each other at a plane intersecting the stack. In areas adjacent to boundaries between the first and second external contacts and the ceramic layers, the first and second external contacts are not oxidized and material making-up the ceramic layers is not diminished. A bonding strength of the external contacts to the stack exceeds 50N.

Abstract: A circuit array includes an antenna input, a signal input, a signal output, and a switch unit. The switch unit connects the antenna to either the signal input or the signal output. The antenna input is connected to a first productive device. The first protective device is a band-pass filter in a T configuration.

Abstract: An actuator includes a stack of piezoelectric layers, and electrode layers between the piezoelectric layers. A stabilization element is attached to a side surface of the stack. The stabilization element fixes a height of the stack so that the height does not change when an operating voltage is applied to at least one of the electrode layers.

Abstract: A piezoelectric component includes a stack of ceramic layers and electrode layers between ceramic layers in the stack. The electrode layers contain copper and the ceramic layers contain lead-zirconate-titanate that is doped with Nb. The ceramic layers are made from a material having a composition of Pb0.988V0.012(Zr0.504+xTi0.472?xNb0.024)O3.000, where ?0.05?x?0.05.

Abstract: A transformer arrangement is specified which includes a piezoelectric transformer with a main body (1), and a cooling body (7) on which the main body (1) is arranged, wherein the main body (1) is thermally coupled to the cooling body (7) by means of at least one heat-conducting coupling element (8).

Abstract: A piezoelectric transformer with a base body is specified that has an input part and an output part, wherein at least three groups of internal electrodes are contained in at least one of these parts. The internal electrodes of each group are interconnected in an electrically conductive way. In this way, the internal electrodes of one group are electrically isolated from the internal electrodes of the other groups.

Abstract: The invention relates to a piezoelectric ceramic material having the general composition ABO3 with at least a proportion of the PZT ceramic having a composition of the invention with Cu cations. The proportion of Zr and Ti cations is selected based upon the content of Cu cations, such that the ceramic material is tailored to the morphotropic phase boundary. The invention further discloses a method for producing a ceramic material of this type.

Abstract: The invention relates to a circuit comprising an antenna input (1), a signal input (2) and a signal output (3), and a switching unit (4), wherein the antenna input (1) is connected to a first protection device (6) against electrostatic discharges, said first protection device (6) being a band-pass filter in a ?-configuration. The advantage of the first protection device (6) is that it eliminates the need for a band-pass filter in the front end module, when used in a mobile telephone. Furthermore, the band-pass filter has a very good filtering characteristic, enabling ESD-related disturbances to be effectively suppressed. The invention also relates to a switching module and to the use of the same.

Abstract: An electrical component includes a body made from a stack of ceramic layers. The body has a cavity that is accessible external to the body. The cavity is defined by a wall. A contact surface is on the wall. A contact device is electrically connected to the contact surface. At least part of the contact device is external to the body. The contact device includes a connection part and a spring. The spring is between the body and the connection part. The spring is for exerting a spring force on the contact surface.

Abstract: A piezoelectric actuator includes a stack of piezoceramic layers and electrodes among the piezoelectric layers. At least one edge region of the stack does not include electrodes. A cover layer is at the at least one edge region. The cover layer has a dielectric constant that is less than a dielectric constant of a piezoceramic layer.

Abstract: A multilayer component is proposed comprising: a ceramic base body (P), at least one internal electrode (2) arranged in the ceramic base body, wherein the internal electrode comprises a plurality of holes (3).

Abstract: A piezoelectric transformer with a base body containing a piezoelectric material is disclosed. The piezoelectric material is polarized in an input part of the base body along a first axis and in an output part of the base body along a second axis perpendicular to the first axis. In a transition region between the input part and the output part, the polarization of the piezoelectric material gradually changes its direction from a polarization along the first axis to a polarization along the second axis.

Abstract: A piezoactuator includes a base. The base contains a stack of piezoelectric layers and electrode layers interspersed among the piezoelectric layers. The piezoelectric layers contain a ceramic material; the piezoelectric layers and the electrode layers are sintered together; and the base has a hole therethrough. The piezoactuator also includes a contact element, such as a pin, in the hole. The contact element is for use in forming an electrical connection to at least some of the electrode layers.

Abstract: Piezoelectric Ceramic Material, Multilayer Component, and Method for Producing Said Ceramic Material The invention relates to a piezoelectric ceramic material having the general composition ABO3 with at least a proportion of the PZT ceramic having a composition of the invention with Cu cations. The proportion of Zr and Ti cations is selected based upon the content of Cu cations, such that the ceramic material is tailored to the morphotropic phase boundary. The invention further discloses a method for producing a ceramic material of this type.

Abstract: A piezoelectric transformer with a base body is specified that has an input part and an output part, wherein at least three groups of internal electrodes are contained in at least one of these parts. The internal electrodes of each group are interconnected in an electrically conductive way. In this way, the internal electrodes of one group are electrically isolated from the internal electrodes of the other groups.

Abstract: A ceramic material includes first and second ceramic materials. The first ceramic material has a perovskite structure and defines a host lattice. The first ceramic material contains lead, zirconium and titanium, e.g., lead zirconate titanate. The second ceramic material has a cryolite structure. The ceramic material may be part of a piezo-actuator containing ceramic layers formed of the ceramic material.

Abstract: A piezoelectric component includes piezoelectric layers and electrode layers between at least some of the piezoelectric layers. The electrode layers define a middle segment in an interior of the piezoelectric layers and end segments located between ends of at least some of the electrode layers and an end of at least one of the piezoelectric layers. The piezoelectric layers include a first piezoelectric material at the end segments and a second piezoelectric material at the middle segment between electrode layers. The first piezoelectric material has a first expansion that is less than a second expansion of the second piezoelectric material.

Abstract: The present invention relates to a piezoelectrical device whose electrode layers contain copper. The usage of copper in electrode layers is enabled by a debindering process, which is carried out by steam.

Abstract: A piezoelectric component with a monolithic multilayer structure, comprising a stack of ceramic layers which are arranged on top of each other and at least two intermediate electrode layers. The electrode layers contain elementary copper. The ceramic layers contain a material composed of Pb0.988V0.012(Zr0.504+xTi0.472?xNb0.024)O3.000, where ?0.05?x?0.

Abstract: The invention relates to a piezoactuator having a base body (4) that contains a stack (1) of superimposed piezoelectric layers (2) and electrode layers (3) disposed between them, in which the piezoelectric layers (2) contain ceramic material and are sintered together, in which, perpendicular to the electrode layers (3a, 3b), a hole passes through the base body (4), into which a pin (5a, 5b, 5c, 5d) is inserted. The invention also relates to a method for the production of a piezoactuator, comprising the following steps: a) Formation of a layered stack (1) of superimposed ceramic green foils (2) and electrode layers (3a, 3b) b) Drilling of a hole into a layered stack (1) c) Insertion of a pin (5a, 5b, 5c, 5d, 9) into the hole.