Patent ID: 8246846
Filing Date: 2012-08-21
Classification: H01H,H03H

Abstract:
1. A method for fabricating integrated micro-electro-mechanical system (MEMS) switches and filters, the method comprising: forming one or more first cavities and one or more second cavities in a silicon substrate; metalizing a first metal pattern on a first surface on a quartz substrate to form one or more first actuation electrodes, one or more paired first and second capacitor plates; bonding the quartz substrate to the silicon substrate so that each first actuation electrode is located within a respective one of the first cavities and each paired first and second capacitor plates are located within a respective one of the second cavities; thinning the quartz substrate; forming one or more first conductive vias in the quartz substrate, each first conductive via connected to a respective one of the first actuation electrodes; metalizing a second metal pattern on a second surface of the quartz substrate to form one or more first metal offsets, one or more paired third and fourth capacitor plates, and one or more metal switch contacts, each first metal offset connected to a respective one of the first conductive vias; etching the quartz substrate to form a plurality of first quartz substrates and a plurality of second quartz substrates, each first quartz substrate having a respective one of the first metal offsets, a respective one of the first conductive vias, a respective one of the first actuation electrodes and a respective one of the metal switch contacts, and each first quartz substrate having a respective one of the paired first and second capacitor plates and a respective one of the paired third and fourth capacitor plates; forming one or more protrusions on a host substrate; metalizing a third metal pattern on the host substrate to form a plurality of first metal anchors, a plurality of second metal anchors, a plurality of third metal anchors, one or more second actuation electrodes, one or more first metal signal lines, and one or more second signal lines, each first, second and third metal anchor overlaying a respective one of the protrusions; connecting each first metal offset to a respective one of the first metal anchors on the host substrate so that each first actuation electrode is substantially aligned over a respective one of the second actuation electrodes, each metal switch contact is aligned over a respective one of the first signal lines and over a respective one of the second signal lines, each paired first and second capacitor plates are substantially aligned over a respective one of the paired third and fourth capacitor plates, each third capacitor plate is electrically connected to a respective one of the second metal anchors, each fourth capacitor plate is electrically connected to a respective one of the third metal anchors, and at least one of the second metal anchors is connected to a respective one of the second signal lines in order to form an integrated MEMS switch and filter; and removing the silicon substrate.