Patent ID: 8339764
Filing Date: 2012-12-25
Classification: B81B,H01H

Abstract:
1. A MEMS switch or tunable capacitor device comprising: first and second opposing electrodes, wherein the second electrode is electrically movable to vary the electrode spacing between facing first sides of the first and second electrodes, wherein the second electrode is at a spaced position from the first electrode in a relaxed state in which no voltages are applied to the electrodes, wherein a first gas chamber is provided between the electrodes, at a first pressure, and a second gas chamber is provided on the second, opposite, side of the second electrode at a second pressure which is higher than the first pressure, and wherein the first gas chamber has a height of between 50 nm and 50 μm and the second gas chamber has a height of between 1 μm and 200 μm.