Siemens Aktiengesellschaft

Siemens Electromechanical Components Gmbh & Co. Kg

Lothar Kiesewetter

Helmut F Schlaak

Joachim Schimkat

Detlef Houdeau

Josef Mundigl

Hans-Jurgen Gevatter

Hans-Juergen Gevattter

Joachim Eicher

An apparatus and method for a micromechanical electrostatic relay that includes a base substrate and a carrier layer deposited onto the base substrate. The carrier layer includes an armature and stationary-contact spring tongues that engage each other at their respective free ends. Once engaged, the armature spring tongue moving contacts overlaps the respective stationary-contact spring tongue stationary contacts. During an electrostatic rest state, the armature and stationary-contact spring tongues curve away from the base substrate wherein their respective free ends no longer engage.

Apparatus and method for a micromechanical electrostatic relay

An antenna coil, in particular for a contactless smart card, includes coil turns formed of thin conductor tracks having first and second ends. The first end of a respective one of the conductor tracks is electrically conductively connected to the second end of an adjacent one of the conductor tracks. The conductor tracks include first and last conductor tracks, and the first end of the first conductor track and the second end of the last conductor track form coil connections. The conductor tracks are disposed in parallel on a flexible, non-conductive carrier strip. The carrier strip has bends and forms a polygon containing the connected ends of the conductor tracks. The bends are guided through approximately 180.degree., and the coil turns lie approximately in the same plane.

Antenna coil

Micromechanical relay having a hybrid drive

A micromechanical electrostatic relay has, on the one hand, a base substrate with a base electrode and a base contact piece and, on the other hand, an armature substrate with an armature spring tongue that is etched free and curved away from the base substrate and that has an armature contact piece. When a control voltage is present between the two electrodes, the spring tongue unrolls on the base substrate until it is stretched and causes the two contact pieces to touch. In order to prevent a creeping contacting and make the closing and opening of the contact abrupt, a geometric discontinuity is provided in the wedge-shaped air gap between the two electrodes. This discontinuity is formed by a partially curved, partially straight design of the spring tongue, by an offset of the beginning of the electrode relative to the spring attachment, and/or by an air gap between the spring attachment and the base electrode. The result is an unambiguous switching hysteresis with trip events when closing and opening the contact.

Micromechanical electrostatic relay with geometric discontinuity

In a method and apparatus for suitably positioning light waveguides for coupling ends of function fibers at coupling locations, the coupling ends of the function fibers are aligned and fixed on a carrier element. Guide capillaries are formed to fit the jackets of the function fibers precisely and are aligned on both sides of a coupling location. The alignment is achieved with the assistance of a wrap-free auxiliary fiber after which the auxiliary fiber is removed and the function fibers are subsequently introduced into the guide capillaries and fixed therein.

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Berlin, Germany

Lothar Kiesewetter