Sion low dielectric constant ceramic nanocomposite

US5677252A · kind A · utility

Assignee

• The United States of America as represented by the Secretary of the Army · US

Inventors

• Gary A. Gilde · North East, US
• Parimal J. Patel · Joppatowne, US
• Clifford Hubbard · Havre de Grace, US
• Brian Pothier · Beverly, US
• Thomas V. Hynes · Nashua, US
• William Croft · Natick, US
• Joe Wells · Mountain View, US

Key dates

• Filing date: Mar 1, 1996
• Grant date: Oct 14, 1997
• Expiry date: Mar 1, 2016

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01Q1/42
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

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.