Superconductive electromagnetic wave mixer and superconductive electromagnetic wave mixing apparatus employing the same
AssigneeCanon Kabushiki Kaisha
InventorsTakehiko Kawasaki, Katsuhiko Shinjo, Keisuke Yamamoto, Norio Kaneko
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Abstract
The present invention relates to a superconductive electromagnetic wave mixer comprising a local-oscillator section and a receiving section, said receiving section serving as a section at which an electromagnetic wave from the local-oscillator section and an externally originating electromagnetic wave are combined. The local-oscillator section and said receiving section are each formed by at least one Josephson junction employing at least one oxide superconductor.
Claims20
A superconductive electromagnetic wave mixer comprising a local-oscillator source located inside said mixer and a receiving section, said receiving section serving as a section at which an electromagnetic wave from the local-oscillator source and an externally originating electromagnetic wave are combined, wherein said local-oscillator source and said receiving section each comprises at least one Josephson junction employing at least one oxide superconductor.
A superconductive electromagnetic wave mixer comprising a local-oscillator source located inside said mixer and a receiving section, said receiving section serving as a section at which an electromagnetic wave from the local-oscillator source and an externally originating electromagnetic wave are combined, wherein said local-oscillator source and said receiving section each comprise at least one Josephson junction employing at least one oxide superconductor, and said local-oscillator source and said receiving section are coupled through a conductive material.
A superconductive electromagnetic wave mixing apparatus comprising:
- a superconductive electromagnetic wave mixer comprising a local-oscillator source located inside said mixer, and a receiving section at which an electromagnetic wave from said local-oscillator source and an externally originating electromagnetic ave are combined, said local-oscillator source and said receiving section each comprising at least one Josephson junction employing at least one oxide superconductor;
- an introducing means through which the externally originating electromagnetic wave is introduced into the receiving section of said electromagnetic wave mixer;
- an amplifier that amplifies the electromagnetic wave of an intermediate frequency band, obtained as a result of the mixing in said electromagnetic wave mixer;
- and
- a cooler that cools at least said electromagnetic wave mixer.
A superconductive electromagnetic wave mixer comprising a local-oscillator source located inside said mixer and a receiving section, said receiving section serving as a section at which an electromagnetic wave from the local-oscillator source and an externally originating electromagnetic wave are combined, wherein said local-oscillator source and said receiving section each comprises a Josephson Junction and said local-oscillator source and said receiving section are coupled through a junction member.
Dependencies are inferred from the claim text.