Systems and devices for filtering electrical signals
AssigneeD-Wave Systems Inc.
InventorsAlexandr M. Tcaciuc, Loren J. Swenson, George E. G. Sterling
Life of this patent
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Abstract
Adaptions and improvements to coaxial metal powder filters include distributing a dissipative matrix mixture comprising superconductive material, metal powder, epoxy, and/or magnetic material within a volume defined by an outer tubular conductor and inner conductor. The frequency response of the filter may be tuned by exploiting the energy gap frequency of superconductive material in the dissipative matrix. The inner surface of the outer tubular conductor may be covered with a superconductive material. For a dissipative matrix comprising magnetic material or superconductive powder particles of a certain size, an external magnetic field can be applied to tune the frequency response of the filter.
Claims19
A system comprising an electrical signal filtering device, the electrical signal filtering device comprising:
- a tubular outer conductor having an outer surface and an inner surface, and a longitudinal passage bounded by the inner surface of the tubular outer conductor, the longitudinal passage having a longitudinal center axis;
- an inner conductor having an outer surface, the inner conductor extending through the longitudinal passage in a direction parallel to the longitudinal center axis;
- and
- a dissipative matrix distributed in the longitudinal passage to occupy at least a portion of a volume defined by the inner surface of the tubular outer conductor and the outer surface of the inner conductor, wherein the dissipative matrix comprises a first material that is superconductive in a respective range of temperatures, and wherein the first material is selected to tune a characteristic of a frequency response of the electrical signal filtering device.
A method of fabricating an electrical signal filtering device comprising:
- providing a tubular outer conductor comprising a longitudinal passage bounded by an inner surface of the tubular outer conductor;
- positioning an inner conductor to extend through the longitudinal passage in a direction parallel to a longitudinal center axis of the longitudinal passage;
- and
- distributing a dissipative matrix in the longitudinal passage to occupy at least a portion of a volume defined by the inner surface of the tubular outer conductor and an outer surface of the inner conductor, wherein the dissipative matrix comprises a first material which is superconductive in a respective range of temperatures, and wherein the first material is selected to tune a characteristic of a frequency response of the electrical signal filtering device.
Dependencies are inferred from the claim text.