The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 2013
Filed:
Jun. 07, 2011
Joerg Froemel, Chemnitz, DE;
Thomas Gessner, Chemnitz, DE;
Christian Kaufmann, Burgstaedt, DE;
Stefan Leidich, Chemnitz, DE;
Markus Nowack, Pockau, DE;
Steffen Kurth, Thalheim, DE;
Andreas Bertz, Chemnitz, DE;
Koichi Ikeda, Atsugi, JP;
Akira Akiba, Atsugi, JP;
Joerg Froemel, Chemnitz, DE;
Thomas Gessner, Chemnitz, DE;
Christian Kaufmann, Burgstaedt, DE;
Stefan Leidich, Chemnitz, DE;
Markus Nowack, Pockau, DE;
Steffen Kurth, Thalheim, DE;
Andreas Bertz, Chemnitz, DE;
Koichi Ikeda, Atsugi, JP;
Akira Akiba, Atsugi, JP;
Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V., Munich, DE;
Sony Corporation, Tokyo, JP;
Abstract
An electrostatically actuated micro-mechanical switching device with movable elements formed in the bulk of a substrate for closing and releasing at least one Ohmic contact by a horizontal movement of the movable elements in a plane of the substrate. The switching device has a drive with comb-shaped electrodes including fixed driving electrodes and movable electrodes. A movable push rod is mechanically connected with the movable electrodes, extends through the electrodes, has a movable contact element at one side, and at least one restoring spring. A signal line has two parts interrupted by a gap. The micro-mechanical switching device is in shunt-configuration with low loss, high isolation in a wide frequency range, low switching time at low actuation voltage and sufficient reliability. The line impedance of the signal line and its variation is as small as possible. The switching device is in shunt-configuration for closing and releasing the Ohmic contact between a ground line and the signal line. The contact element has a movable contact beam extending at least partially opposite to the signal line and being electrically and mechanically connected to both parts of the signal line, respectively. The ground line is formed with a contact bar that leads through the gap of the signal line for forming the Ohmic contact between the contact beam and the ground line. A contact metallization is provided at least on top and on the side walls of the contact beam, of the signal line and of the ground line.