Showing papers by "Kamaljit Rangra published in 2011"

Review of mems test structures for mechanical parameter extraction

Abstract: This paper reviews the recent progress in MEMS test structures for mechanical parameter extraction. MEMS test structures reviewed include cantilevers, fixed-fixed beams, bent-beam, guckel rings, pointers, circular diaphragm, and lancet structures. Important mechanical and process parameters are highlighted, as they have significant contributions to the performance of MEMS devices. The challenges and statues of the test structures are outlined and discussed.

Design optimization of deflection caused after release of multilayer structural membrane of symmetric toggle switch

Abstract: This paper presents the optimization in deflection caused by the inbuilt stress generated in mechanical or movable membrane of Symmetric Toggle RF MEMS Switch (STS). The movable membrane of STS was initially fabricated with two different materials, i.e. Chrome and Gold. The simulated deflection at 70°C was 11.9 µm, and experimental deflection was 11-12 µm. We present a study of inbuilt deflection reduction in multimetal movable layers without change in actuation voltage of the switch. The design study was initially carried out on cantilevers and then on structural membrane of STS. STS with proposed multilayer of Cr-Au-Au-Ti-Au has a simulated deflection of 0.56 µm at 70°C.