Infineon Technologies Ag

Finisar Corporation

Siemens Aktiengesellschaft

Schleifring Und Apparatebau Gmbh

Mario Festag

Uwe Fischer

Daniel Reznik

Andreas Steffensen

Markus Vester

Stefan Popescu

Martin Hergt

Christian Carstens

Roger Lee Miller

Herbert Weithmann

Andreas Stockhausen

Michael P&ouml;hnke

In a device for contact-free transmission of electrical signals between two gantry parts of a computed tomography system that rotate relative to one another, at least one annular, circumferential transmitter element is mounted on one gantry part to transmit the electrical signals, and at least one receiver element to receive the signals emitted by the transmitter element is mounted on the other gantry part. The transmitter element is formed by a single conductor running on a surface, this conductor representing an electrical reference ground (zero potential). At least one dielectric immediately follows on the surface, and multiple conductive conductor structure pairs are executed in two mirror-image parts and are mounted on the at least one dielectric. The separation of conductor structures arranged at the edge from the edge of the surface of the reference ground has a magnitude that both amounts to at least 10 mm and corresponds to at least half of the distance from the two conductor structures arranged in a mirror image at the edge, to the nearest conductor structure.

Device for non-contacting transmission of electrical signals in a computed tomography system

In a transmission device for use in magnetic resonance systems for transmitting magnetic resonance signals from a number of local coils to an evaluation device, the signals are transmitted as optical signals in an optical conductor between a first transmitter-side transducer that transduces electrical signals into optical signals and a second receiver-side transducer that transduces optical signals into electrical signals, and an analog/digital converter is respectively provided between the local coils and the first, transmitter-side transducer. The local coils are connected by electronic elements to a single circuit board, and a number of preamplifiers, the analog/digital converters and a multiplexer are integrated onto the circuit board such that the multiplexer merges the outputs of the multiple analog/digital converters.

Device and method for optical transmission of magnetic resonance signals in magnetic resonance systems

A housing-shaped shielding plate for shielding of an electrical component, in particular a radio-frequency, optoelectronic transceiver, is described. The housing-shaped shielding plate has a shielding plate body with a first region which lies inside a metallic structure, and with a second region which can be inserted through a cutout of the metallic structure and has an opening for coupling a connector. Accordingly, in the first region of the shielding plate body there are elongated slots, through which electromagnetic waves produced within the shielding plate body are specifically coupled out of the shielding plate.

Housing-shaped shielding plate for the shielding of an electrical component

The invention relates to an electrical printed circuit board serving for electrical contact-connection of an integrated circuit. The printed circuit board has a dielectric forming the printed circuit board material; at least one ground inner layer connected to ground potential; and a supply voltage inner layer connected to the potential of the supply voltage. The invention further includes at least one locally formed inner layer electrically connected to the supply voltage inner layer; a first external terminal contact serving for electrical connection to a ground terminal of an integrated circuit; and a second external terminal contact serving for electrical connection to a supply voltage terminal of an integrated circuit. In addition, a first contact-connection is provided between the first external terminal contact and the at least one ground inner layer; and a second contact-connection is provided between the second external terminal contact and the at least one locally formed inner layer. The at least one locally formed inner layer and the at least one ground inner layer provide a printed circuit board decoupling capacitor for an integrated circuit.

Electrical printed circuit board

The present invention relates to a plug-in electronic module which has: a housing, an electronic component arranged in the housing, at least one external electrical contact connected to the electronic component, where the electronic module can be plugged into a holding structure such that the external electrical contacts on the module come into contact with associated electrical contacts on a coupling partner during the plug-in operation, and a mechanical protective apparatus which protects the electrical contacts from mechanical contact when the module is not plugged in and which exposes the electrical contacts when the module has been plugged into the holding structure, so that they can come into contact with associated electrical contacts on the coupling partner. The invention also relates to a method for connecting such an electronic module to a holding structure.

Plug-in electronic module and method for connecting a plug-in electronic module to a holding structure

A waveguide which is particularly suitable for transmitting electrical signals between or to and/or from electronic circuits, for example between integrated circuits disposed on a printed circuit board, has an over-voltage protection region. The over-voltage region of the waveguide region is specifically formed by the actual geometric configuration of the waveguide.

Waveguide

An optical device assembly includes an optical device. The optical device has an optical fiber led from the device with an anti-kink protector, and also a transmitting and/or receiving module having such an optical device. The anti-kink protector is made of a material and/or the anti-kink protector is sheathed with a material that is electrically conductive or highly absorbent to electromagnetic waves. The transmitting and/or receiving module is constructed in such a way that the anti-kink protector is disposed in the area of an opening of the module housing and at the same time is coupled electrically to the module housing. The electrical coupling of the electrically conductive anti-kink protector to the module housing results in a considerable reduction in the interference radiation that emerges.

Optical device assembly with an anti-kink protector and transmitting/receiving module

An optical transceiver module includes an electro-optical transmission assembly and an electro-optical receiving assembly both mounted on a common printed circuit board and enclosed by a top shell and a bottom shell of an electromagnetically shielding transceiver module. The housing has optical connection openings and an electrical connection opening. The serial optical signals of a first Bit-rate of several Gbit/s and more are converted to serial electrical signals and are multiplexed to parallel electrical signals at a lower second Bit-rate. Reducing the Bit-rate and thus reducing the electromagnetic frequency reduces the risk of electromagnetic interference on the printed circuit main-board. The optical connection openings have a first and a second gasket for reducing the electromagnetic radiation emerging out of the housing through the optical connection openings. The electrical connection opening has a third gasket for reducing the electromagnetic radiation emerging out of the electrical connection opening.

Optical transceiver module

The invention relates to a shielding element for electromagnetically shielding an aperture opening formed, for example, in a metallic structure, a plug holder or a component housing. In the non-deflected state, a large number of conductive contact springs extend from the frame of the shielding element towards the aperture opening. The contact springs at least partially overlap one another and close the aperture opening. When a plug-in element is inserted into the aperture opening, the contact springs are deflected in the insertion direction and rest in a sprung manner on the component. The invention provides an automatically closing radio-frequency seal for an aperture opening.

Shielding element for electromagnetic shielding of an aperture opening

The shielding plate receives pluggable electrical components, in particular optoelectronic transceivers. The shielding plate has an at least partially casing-shaped main portion and contact springs formed on the main portion for the electrical contact of the shielding plate with a metallic structure. A first part of the main portion can be placed within the metallic structure and a second part of the main portion can be inserted through a cutout of the metallic structure. The contact springs are projections formed on the extreme ends of the main portion and bent back toward the main portion. The ends of the bent-back projections electrically contact the main portion in a rear region which, in the electrical bonding of the metallic structure by the contact springs, lies within the metallic structure.

Shielding plate for pluggable electrical components

The shielding plate is particularly suited for optoelectronic transceivers. The shielding plate is a hollow body in the form of a casing and has contact springs which are formed on the hollow body in order to make contact between the hollow body and a metallic structure. Contact springs are formed by projections which are arranged on the end face of the hollow body and are bent back onto the hollow body. As a result, the shielding plate having a chimney-like structure with improved shielding and reduced emission.

Growing community of inventors

Berlin, Germany

Mario Festag