Helical slow-wave circuit assembly with reduced RF losses
AssigneeNEC Corporation
InventorKazuhisa Nishida
Life of this patent
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Abstract
A helical slow-wave circuit assembly includes a helix, P-BN pillars, a metal cylinder, artificial diamond films, and intermediate films. The helix constitutes a slow-wave circuit of the electromagnetic wave with respect to an electron flow and generates an electromagnetic wave that travels as a current flows. The P-BN pillars are disposed equidistantly around the helix in a direction along which the electromagnetic wave travels, and contains at least nitrogen. The metal cylinder supports the helix therein through the P-BN pillars. The artificial diamond films are formed on outer circumferential surfaces of the P-BN pillars. The intermediate layers are formed between the P-BN pillars and the artificial diamond films and prevents diffusion of nitrogen from the P-BN pillars to the diamond films.
Claims6
A helical slow-wave circuit assembly comprising:
- a helix comprised of conductive material;
- a plurality of dielectric pillars disposed equidistantly around a circumferential periphery of said helix and extended in an axis direction of said helix, said dielectric pillars having respective outer circumferential surfaces and containing at least nitrogen;
- a metal cylinder for supporting said helix therein through a contact with each one of said dielectric pillars;
- respective artificial diamond films disposed on the corresponding outer circumferential surfaces of said dielectric pillars;
- and
- intermediate layers disposed between said respective dielectric pillars and said corresponding artificial diamond films, for preventing a diffusion of nitrogen from said respective dielectric pillars to said corresponding artificial diamond films.
Dependencies are inferred from the claim text.