US Government As Represented by the Secretary of the Army

Thomas V Hynes

Louise C Sengupta

Somnath Sengupta

Eric Ngo

Gary A Gilde

Steven Stowell

Parimal J Patel

Robert Lancto

Michelina E O'Day

Clifford Hubbard

William J Croft

Brian Pothier

Joe Wells

A laminated ceramic ferroelectric material has adjacent layers of Barium ontium Titanate (BSTO)--oxide composite stacked in order of descending oxide content and sized in thickness to produce a generally equal capacitance across each layer, resulting in a material having a graded dielectric constant for use in phased array antenna, for example. The oxides are from the metallic oxide group consisting of alumina, zirconia and magnesia and the layers are produced by tape casting.

Electronically graded multilayer ferroelectric composites

A ceramic nanocomposite made from silicon, oxygen and nitrogen is provided hich has a very low dielectric constant, low dielectric loss along with good strength and hardness. The ceramic nanocomposite finds use in millimeter-wave radomes and microwave radomes used on aircraft which must resist erosion from high speed impact with water, ice and dust in the atmosphere.

Sion low dielectric constant ceramic nanocomposite

Growing community of inventors

Nashua, NH, United States of America

Thomas V Hynes