Nanostructured tunable antennas for communication devices
AssigneeMotorola, Inc.
InventorsZhengfang Qian, Robert Lempkowski
Life of this patent
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Abstract
An apparatus (10, 30, 40, 50) is provided that relates to nanotubes as radiation elements for antennas and phased arrays, and more particularly to a macro-sized RF antenna for mobile devices. The antenna comprises a plurality of nanostructures (16), e.g., carbon nanotubes, forming an antenna structure on a substrate (12), and a radio frequency signal apparatus formed within the substrate (12) and coupled to the plurality of nanostructures (16). The radiation element length of a nested multiwall nanotube (161) of an exemplary embodiment may be tuned to a desirable frequency by an electromagnetic force (163).
Claims23
An antenna comprising:
- a substrate;
- a plurality of nanostructures forming an antenna structure on substrate;
- and
- a radio frequency signal apparatus formed within the substrate and coupled to the plurality of nanostructures.
The portable communication device of claim 11 wherein the antenna structure comprises a length capable of receiving a waveform having a wavelength of between 0.5 centimeter to 2.0 centimeters.
The portable communication device of claim 11 wherein the antenna structure comprises a length capable of receiving a waveform having a wavelength of between 0.5 millimeter to 0.5 centimeter.
The portable communication device of claim 11 wherein the antenna structure comprises a length capable of receiving a waveform having a wavelength of between 1.0 nanometer to 0.5 millimeters.
A portable communication device comprising:
- a user interface;
- receiver circuitry;
- a controller coupled between the user interface and the receiver circuitry;
- and
- an antenna coupled to the receiver circuitry, the antenna comprising:
- a substrate;
- a plurality of nanostructures formed as an antenna structure on the substrate;
- and
- electronic apparatus formed within the substrate and coupled to the plurality of nanostructures.
A method of tuning an antenna having a substrate, a plurality of nested multiwall nanostructures forming an antenna structure on the substrate and having at least one inner wall, and a radio frequency signal apparatus formed within the substrate and coupled to the plurality of nested multiwall nanostructures, the method comprising:
- applying an electromagnetic force to the nested multiwall nanostructures;
- and
- displacing the at least one inner wall.
Dependencies are inferred from the claim text.