A vacuum insulated structure including a tube having an outer wall, a jacket surrounding the tube to enclose an annular insulating space, the jacket having an end that terminates at the outer wall of the tube, a seal formed between the end of the jacket and the tube to preserve a vacuum within the insulating space, and a fitting affixed to one of the tube and the jacket for coupling the vacuum insulated structure to an external device. A method of making a vacuum insulated structure including forming a tube and a jacket, positioning the jacket over the tube to form an annular insulating space, with an end of the jacket being positioned adjacent to an outer wall of the tube to form a vent, causing air to escape through the vent, sealing the vent, and affixing a fitting to one of the tube and the jacket.

An apparatus comprises a plurality of waveguides, wherein the waveguides include a dielectric material; an outer shell; and a supporting feature within the outer shell, wherein the waveguides are arranged separate from each other within the outer shell by the supporting feature.

A method of making a waveguide ribbon that includes a plurality of waveguides comprises joining a first sheet of dielectric material to a first conductive sheet of conductive material, patterning the first sheet of dielectric material to form a plurality of dielectric waveguide cores on the first conductive sheet, and coating the dielectric waveguide cores with substantially the same conductive material as the conductive sheet to form the plurality of waveguides.

A vacuum insulated structure including a tube having an outer wall, a jacket surrounding the tube to enclose an annular insulating space, the jacket having an end that terminates at the outer wall of the tube, a seal formed between the end of the jacket and the tube to preserve a vacuum within the insulating space, and a fitting affixed to one of the tube and the jacket for coupling the vacuum insulated structure to an external device. A method of making a vacuum insulated structure including forming a tube and a jacket, positioning the jacket over the tube to form an annular insulating space, with an end of the jacket being positioned adjacent to an outer wall of the tube to form a vent, causing air to escape through the vent, sealing the vent, and affixing a fitting to one of the tube and the jacket.

A flexible coaxial waveguide includes a plurality of dielectric members including a center portion having a hole. An inner conductor having the plurality of dielectric members is arranged through the hole in the center portion, and an outer conductor surrounds the plurality of dielectric members. The outer conductor is a bellows-shaped outer conductor.

A flexible coaxial waveguide includes a plurality of dielectric members including a center portion having a hole. An inner conductor having the plurality of dielectric members is arranged through the hole in the center portion, and an outer conductor surrounds the plurality of dielectric members. The outer conductor is a bellows-shaped outer conductor.

Contactless extremely high frequency connector assemblies, passive cable connector assemblies, and active cable connector assemblies are disclosed herein. In one embodiment, a contactless connector assembly can include several (EHF) contactless communication units operable to selectively transmit and receive EHF signals, and several signal directing structures coupled to the EHF CCUs. The signal directing structures can direct the EHF signals along a plurality of EHF signal pathways.

A system for remote powering at least one sensor or actuator from a RF power source including a flexible waveguide having a flexible dielectric layer and at least one flexible conductive layer connected to the flexible dielectric layer. The at least one sensor or actuator is arranged to be coupled to the flexible waveguide and the RF power source is arranged to be wirelessly coupled to the flexible waveguide and to generate RF power. The flexible waveguide guides the propagation of the RF power from the RF power source to the sensor or actuator in order to wirelessly power the sensor or actuator.

A waveguide includes: a dielectric including two surfaces, an electric field intersecting with the two surfaces; metal-plating layers coating the two surfaces of the dielectric, the electric field intersecting with the two surfaces; and a protective layer coating a periphery of the dielectric including the two surfaces coated with the metal-plating layers. A wireless transmission system includes: a sender configured to send a high-frequency signal; and a receiver configured to receive the high-frequency signal. The waveguide is used as a waveguide configured to transmit the high-frequency signal between the sender and the receiver in the wireless transmission system.

A waveguide includes: a dielectric including two surfaces, an electric field intersecting with the two surfaces; metal-plating layers coating the two surfaces of the dielectric, the electric field intersecting with the two surfaces; and a protective layer coating a periphery of the dielectric including the two surfaces coated with the metal-plating layers. A wireless transmission system includes: a sender configured to send a high-frequency signal; and a receiver configured to receive the high-frequency signal. The waveguide is used as a waveguide configured to transmit the high-frequency signal between the sender and the receiver in the wireless transmission system.