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US 2006/0135110 A1Published application
Carbon nanotube devices and method of fabricating the same
AssigneeNorthrop Grumman Corporation
InventorsJohn Przybysz, John Adam, Hong Zhang, Howard Fudem
Life of this patent
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Abstract
An RF mixer includes a diode quad including first, second, third and fourth carbon nanotube diodes, each carbon nanotube diode including a p-n junction The mixer also includes a RF input coupled each of the diodes, and a local oscillator input coupled with each of the diodes.
Claims35
A radio frequency (RF) mixer comprising:
- an RF input for receiving an RF signal;
- and
- at least two carbon nanotube diodes coupled with said RF input.
A radio frequency (RF) mixer comprising:
- a diode quad including first, second, third and fourth carbon nanotube diodes, each carbon nanotube diode including a p-n junction;
- an RF input for receiving an RF signal coupled to each of said diodes;
- and
- a local oscillator input coupled with each of said diodes.
1 more element
A diode quad comprising:
- a substrate;
- first and second electrodes formed on the surface of said substrate and separated by a first gap;
- second and third electrodes formed on the surface of the substrate and separated by a second gap, a portion of said second and said third electrodes being formed in said first gap;
- a first p-n junction carbon nanotube diode connecting said first electrode with said third electrode;
- a second p-n junction carbon nanotube diode connecting said first electrode with said fourth electrode;
- a third p-n junction carbon nanotube diode connecting said second electrode with said third electrode;
- and
- a fourth p-n junction carbon nanotube diode connecting said second electrode with said fourth electrode.
5 more elements
A scanner comprising:
- an array of mixers, each mixer comprising:
- a diode quad including first, second, third and fourth carbon nanotube diodes, each carbon nanotube diode including a p-n junction;
- a RF input coupled with each of said diodes;
- and
- a local oscillator input coupled with each of said diodes;
- an RF source;
- and
- mirror means for focusing the RF signal from said RF source onto said array of mixers and for scanning a local oscillator input onto said array of mixers;
- and
- a processing means for processing an output of said array to produce an image.
7 more elements
Dependencies are inferred from the claim text.