Patent ID: 6614093
Filing Date: 2003-09-02
Classification: H01F,H01L

Abstract:
A device for providing a narrow and highly controlled beam of electrons, comprising:a substrate; an inductor formed on the substrate, the inductor having a plurality of rings of conductive material, each of the plurality of rings separated from others of the plurality of rings by one or more solid dielectric layers, each of the plurality of rings having a perimeter and a single gap along the perimeter, adjacent ones of the plurality of rings being interconnected by one or more interconnection elements so as to approximately form a coil shape, the inductor having a first end and a second end, the inductor having a cavity throughout a length of the inductor, the cavity containing air only; and an electron source at the first end of the inductor, the electron source emitting electrons that form a beam controlled by the inductor.