TechWatch
2004:
• Miniaturized antennas based on negative
permittivity materials—Lucent Technologies
• Metamaterial scanning lens antenna systems
and methods—The Boeing Company
2003:
• Metamaterials employing photonic crystal—MIT
• Methods of fabricating electromagnetic
metamaterials—The Boeing Company
2002:
• Resonant antennas—Lucent Technologies
miniaturized antennas based on
negative permittivity materials
An antenna comprises a resonator and a waveguide.
The resonator comprises at least one body having a
negative effective electrical permittivity or a negative
magnetic permeability when a resonance is excited
therein by electromagnetic radiation lying in some
portion of the microwave spectrum. A termination of
the waveguide is situated adjacent the resonator.
The resonator is conformed such that at the
resonance, there is efficient coupling between the
resonator and the waveguide.
metamaterial scanning lens
antenna systems and methods
The present invention is directed to systems and methods for
radiating radar signals, communication signals, or other
similar signals. In one embodiment, a system includes a
controller that generates a control signal and an antenna
coupled to the controller. The antenna includes a first
component that generates at least one wave based on the
generated control signal and a metamaterial lens positioned
at some predefined focal length from the first component.
The metamaterial lens directs the generated at least one
wave.
resonant antennas
An apparatus includes an object and one or more sensors
located adjacent to or in the object. The object is formed of a
material whose dielectric constant or magnetic permeability
has a negative real part at microwave-frequencies. The one
or more sensors are located adjacent to or in the object and
measure an intensity of an electric or a magnetic field
therein.
method of fabricating
electromagnetic meta-materials
Abstract
In one embodiment, a method for fabricating electromagnetic
meta-materials includes applying first and second array of
electromagnetically reactive patterns to first and second nonconducting surfaces, wherein the first array includes at least one
of a split ring resonator pattern, a square split ring resonator
pattern, and a swiss roll pattern, and the second array includes a
thin parallel wire pattern. The first and second non-conducting
surfaces are joined together such that the first and second nonconducting surfaces bearing the first and second arrays of
electromagnetically reactive patterns are commonly oriented.
Alternately, a method may further include slicing between
elements of the first and second arrays of electromagnetically
reactive patterns in a plane perpendicular to the first and second
surfaces to form a plurality of slices, rotating at least one of the
slices, and applying a third array of electromagnetically reactive
patterns to a third non-conducting surface.
metamaterials employing
photonic crystals
A periodic structure is disclosed that
includes an array of point defects within the
periodic structure. The array includes point
defects in a least two dimensions of the
periodic structure. Each point defect
permits electromagnetic fields of a first
wavelength that is otherwise within a band
gap range of the periodic structure to exist
in each of the point defects.