Sunday, September 18, 2011

US Patent 8017864 - Woven CNTs for low loss inductors and resonators

http://www.freepatentsonline.com/8017864.html

The conduction of wires at ultrahigh frequencies is diminished by the skin effect which can introduce significant power loss in communication systems. This patent from Motorola Mobility teaches how interwoven carbon nanotubes can be used to reduce this problem to provide UHF communication systems with less power loss. Claim 12 reads:

12. A method of making a conductor for transmitting radio-frequency signals, comprising the steps of:

(a) placing a plurality of carbon nanotubes on a substrate; and

(b) interweaving a first plurality of individual nano scale conductors into a first primary strand;

(c) interweaving a second plurality of individual nano scale conductors into a second primary strand;

(d) interweaving a third plurality of individual nano scale conductors into a third primary strand; and

(e) interweaving the first primary strand, the second primary strand and the third primary strand so as to form a Litz wire into a Litz wire.

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