A MEMS Multi-Cantilever Variable Capacitor On Metamaterial
Abstract
Negative refractive index materials are an example of metamaterials that are becoming increasingly popular. Research into these metamaterials could possibly be the first steps toward bending electromagnetic radiation(i.e., microwaves, light, etc.) around an object or person. Split ring resonators (SRR) are classified as metamaterials that create an artificial magnetic response from materials with no inherent magnetic properties. Once fabricated, an SRR has a specific resonant frequency due to its permanent geometry. This research introduces a new concept of using a variable capacitive micro-electro-mechanical system (MEMS) device located at the gap of an SRR to mechanically alter the capacitance of the SRR structure and thus change its resonance. This design simplifies fabrication and offers to use less space than a varactor diode or MEMS switch since the MEMS device is the capacitive element and is fabricated in-situ with the SRR. This research is the first known to demonstrate the fabrication of a MEMS device on an SRR. This thesis reports on the model, design, fabrication, and testing of the capacitive MEMS device as a stand-alone test structure and located on an SRR. When pulled-in, the cantilever beams add between 0:54 - 0:62 pF.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 26, 2009
- Accession Number
- ADA497157
Entities
People
- Luke Rederus
Organizations
- Air Force Institute of Technology