Development of Metamaterial Composites for Compact High Power Microwave Systems and Antennas
Abstract
During the period of performance we investigated the electrical and mechanical properties of two types of ferrite metamaterials: ferrite-based composites and core-shell composites. Both were fabricated using advanced polymer composite techniques and then characterized. The measurements were compared to models and the analysis is presented in this report. The ferrite-based composites consist of combining a ferrite powder with a silane binder and pressing them together following a mixing operation. These composites are easily manufactured in bulk and their properties can be tailored to specific wave impedance requirements. In the other approach, the core-shell composites are formed by chemically depositing a barium titanate (BaTiO3) shell around a ferrite core to form a composite of small beads of ferrite surrounded by insulating BaTiO3. Both metamaterials were then fabricated into test coupons and the electrical properties were investigated. Investigations of electrical properties included: studies of real and imaginary permeability of the composite materials; studies of real and imaginary permittivity of the composites; electrical breakdown strength of the composites.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2016
- Accession Number
- AD1023336
Entities
People
- Aric M. Pearson
- Kelli M. Noel
- Kevin A. O'connor
- Randy D. Curry
- Sarah Mounter
Organizations
- University of Missouri