US 6,788,244 B1 · Inspection device for radar absorbing materials

Abstract

The invention is a device for inspecting an assembly including a surface coating containing magnetic radar-absorbing materials on a conductive surface. In detail, the device includes a first system for transmitting an electromagnetic signal to the assembly, which includes a first waveguide made of a conductive material coupled in series to a second waveguide made of a dielectric material. A second system is provided for receiving the portion of the electromagnetic signal reflected from the assembly, which includes a third waveguide made of a conductive material coupled in series to a fourth waveguide made of a dielectric material. Thus the electromagnetic signal is transmitted from the first waveguide to the second waveguide on to the assembly and the portion of the electromagnetic signal reflected off the assembly is received by the fourth-waveguide and transmitted to the third, waveguide.

Claims19

Dependent claims

A device for inspecting an assembly including a surface coating containing magnetic radar absorbing materials on a conductive surface, the device comprising:

first and second hollow conductive waveguides having open first ends and closed off second ends, said first waveguide adapted to direct electromagnetic radiation to the surface of the coating and said second waveguide adapted to receive electromagnetic radiation reflected off the surface coating;
said first and second waveguides at an acute angle to each other;
third and forth waveguides made of a dielectric material, said third and fourth wave guides having first ends extending into said first ends of said first and second wave guides and second ends extending outward from said first ends of said first and second wave guides;
first means coupled to said second end of said first waveguide for delivering electromagnetic energy to said first wave guide and to said third waveguide for transmission to the assembly;
and
second means coupled to said second end of said second waveguide for receiving electromagnetic energy transmitted by said first means to the assembly and reflected back to said fourth waveguide.

3 more elements

A device for inspecting an assembly including a surface coating containing magnetic radar absorbing materials on a conductive surface, the device comprising:

a first means for transmitting an electromagnetic signal to the assembly, said first means comprising:
a electromagnetic signal generating means;
and
a first waveguide made of metal having first and second ends, said first waveguide for receiving the electromagnetic signal at said first end and transmitting the electromagnetic signal toward said second end;
a first waveguide made of a dielectric material, said second waveguide having a first end extending into said second end of said first waveguide and a second end extending outward from said second end of said first wave guide;
and
a second means for receiving the electromagnetic signal reflected back from the assembly, said second means comprising:
a electromagnetic signal receiving means;
and
a third waveguide made of metal having first and second ends, said third wave guide for receiving the electromagnetic signal at said second end transmitting the electromagnetic signal toward said first end;
and
a fourth waveguide made of a dielectric material, said fourth waveguide having a first end extending into said second end of said third waveguide and a second end extending outward from said second end of said first wave guide for receiving electromagnetic radiation reflected from the assembly.

9 more elements

Dependencies are inferred from the claim text.

Inspection device for radar absorbing materials

Life of this patent

Inspection device for radar absorbing materials

Life of this patent

Abstract

Claims19