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US 12,656,417 B2Granted
Oscillator
AssigneeNEC Corporation
InventorsYoshihito Hashimoto, Tsuyoshi Yamamoto, Tomohiro Yamaji
Life of this patent
Estimating the term…
Abstract
An oscillator in which crosstalk can be reduced is provided. An oscillator includes a ground plane made of a superconductor, a conductive member spaced apart from and surrounded by the ground plane, a SQUID of which one end is connected to the conductive member and the other end is connected to the ground plane, a first connection circuit made of a superconductor, connecting parts of the ground plane located on both sides of a vicinity of a connection part between the conductive member and the SQUID to each other, and a superconducting loop circuit surrounding the SQUID and using the ground plane and the first connection circuit.
Claims9
An oscillator comprising:
- a ground plane comprising a superconductor;
- a conductive member spaced apart from and surrounded by the ground plane;
- a Superconducting QUantum Interference Device (SQUID) of which one end is connected to the conductive member and the other end is connected to the ground plane;
- a first connection circuit comprising a superconductor, and connecting parts of the ground plane located on both sides of a vicinity of a connection part between the conductive member and the SQUID to each other;
- a superconducting loop circuit surrounding the SQUID and using the ground plane and the first connection circuit;
- and
- a control line configured to magnetically couple with the SQUID, and to which a control signal is input, wherein:
- the control line is disposed so that two types of magnetic fluxes having magnitudes roughly equal to each other and directions opposite to each other pass through the superconducting loop circuit by the control signal flowing through the control line,
- the control line is wired in a U-shape so as to be folded back in a vicinity of the SQUID,
- the oscillator comprises a second connection circuit comprising a superconductor, and connecting parts of the ground plane located on both sides of two lines consisting of outward and returning sections of the U-shaped control line to each other, and
- the superconducting loop circuit is a circuit using the ground plane and the first and second connection circuits.
8 more elements
An oscillator comprising:
- a ground plane comprising a superconductor;
- a conductive member spaced apart from and surrounded by the ground plane;
- a Superconducting QUantum Interference Device (SQUID) of which one end is connected to the conductive member and the other end is connected to the ground plane;
- a first connection circuit comprising a superconductor, and connecting parts of the ground plane located on both sides of a vicinity of a connection part between the conductive member and the SQUID to each other;
- and
- a superconducting loop circuit surrounding the SQUID and using the ground plane and the first connection circuit, wherein:
- the control line configured to magnetically couple with the SQUID, and to which a control signal is input is provided in a substrate,
- the ground plane, the conductive member, and the SQUID are provided in a chip configured to be flip-chip connected to the substrate,
- the first connection circuit is formed by a bump adapted to connect the ground plane of the chip to a conductive member included in the substrate, and the conductive member included in the substrate,
- the superconducting loop circuit serves as a first superconducting loop circuit,
- the oscillator further comprises a second superconducting loop circuit, and
- the second superconducting loop circuit is a circuit surrounding an area in the substrate corresponding to an area where the SQUID is located with a predetermined interval therebetween, the circuit using the ground plane included in the substrate, and a second connection circuit connecting parts of the ground plane included in the substrate that are located on both sides of the control line to each other.
9 more elements
An oscillator comprising:
- a ground plane comprising a superconductor;
- a conductive member spaced apart from and surrounded by the ground plane;
- a Superconducting QUantum Interference Device (SQUID) of which one end is connected to the conductive member and the other end is connected to the ground plane;
- a first connection circuit comprising a superconductor, and connecting parts of the ground plane located on both sides of a vicinity of a connection part between the conductive member and the SQUID to each other;
- and
- a superconducting loop circuit surrounding the SQUID and using the ground plane and the first connection circuit, wherein:
- the control line configured to magnetically couple with the SQUID, and to which a control signal is input is provided in a substrate,
- the ground plane, the conductive member, and the SQUID are provided in a chip configured to be flip-chip connected to the substrate,
- the first connection circuit is formed by a bump adapted to connect the ground plane of the chip to a conductive member included in the substrate, and the conductive member included in the substrate,
- the superconducting loop circuit serves as a first superconducting loop circuit,
- the oscillator further comprises a second superconducting loop circuit, and
- the ground plane of the substrate completely surrounding an area in the substrate corresponding to an area where the SQUID is located with a predetermined interval therebetween serves as the second superconducting loop circuit.
9 more elements
Dependencies are inferred from the claim text.