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Emerging dielectric materials have been utilized to reduce the size of antennas and advanced pulsed power systems. Metamaterial composites can replace these traditional dielectrics by providing better electromagnetic properties while also being easy to machine into complex shapes. We are presently investigating these metamaterial composites, which have an impedance that can operate at the impedance...
Metamaterial composites with both ferroelectric and ferromagnetic phases have promising applications in the field of applied electromagnetics and directed energy. This metamaterial, which integrates the dielectric-ferromagnetic properties into a single composite, was synthesized using a hydrothermal process combining barium hydroxide (Ba(OH)2), titanium dioxide (TiO2), and nickel-zinc ferrites. The...
A new research effort at the University of Missouri-Columbia aims to develop metamaterials for high power antennas and other microwave devices. In the past, size reduction of high power antennas has focused on the development of materials with a high relative permittivity. However, the authors propose that by controlling both the permittivity and permeability, it will be possible to significantly...
High power wideband helical antennas are currently being designed, simulated, and constructed at the University of Missouri-Columbia's Center for Physical and Power Electronics laboratory. The program CST Microwave Studio was used to simulate antenna designs derived from Krauss's formulas. Once simulations proved to be functional, the antennas were constructed, characterized, and compared against...
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