Balluff Gmbh

Matthias Hofherr

Daniel Schweizer

Christoph Bauch

Fabian Hauser

Marc Lechler

Stephan Bleil

Debraj Kar

Thomas Graf

An RFID antenna device () for emitting and/or receiving circularly polarised electromagnetic radiation, comprising a radiator unit () which has a radiator network () with multiple at least partially curved radiator portions () and an auxiliary antenna () which is galvanically isolated from the radiator network () and is inductively or capacitively coupled to the radiator network (), a supply network unit () having a power division portion () with a device port and having at least one delay portion () which is electrically conductively connected to the power division portion () and is electrically conductively connected to the radiator portions (), wherein the auxiliary antenna () is centrally located between the radiator portions (). Further, an RFID sensor device comprising such an RFID antenna device ().

RFID antenna device and RFID sensor device

A waveguide-coupling device () for a hydraulic cylinder () has an outer conductor element () to which a microwave signal can be supplied, an inner conductor element () for coupling a waveguide mode into a liquid-filled inner chamber () of the hydraulic cylinder () and a dielectric insulating element () arranged between the inner conductor element () and the outer conductor element (), wherein the inner conductor element () and the dielectric insulating element () as well as the dielectric insulating element () and the outer conducting element () are each connected to each other in a liquid-tight manner.

Waveguide-coupling device and position sensor device for a hydraulic cylinder, hydraulic cylinder and method for operating a waveguide-coupling device

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Stuttgart, Germany

Matthias Hofherr