Flexible waveguide

The flexible wave conductor addresses the space and heat challenges in cryogenic applications by using a design with superconducting strip lines, allowing for efficient signal transmission across a wide temperature range.

WO2025068185A1 Publication Date: 2025-04-03FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV
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Patent Information

Application Number
PCT/EP2024/076784
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-25
Filing Date
2024-09-24
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Existing wave conductors used in cryogenic applications, such as quantum computers, face challenges with high space requirements and increased passive heat input due to the number of cables needed. Additionally, commercially available coaxial cables are not suitable for room temperature connections due to high damping.

Method used

A flexible wave conductor design featuring a first and second metallization, a flexible substrate, and a middle conductor with at least two strip lines, where at least one strip line is made of superconducting material. This design allows for reduced space requirements and maintains low damping across a wide temperature range.

Benefits of technology

The flexible wave conductor effectively reduces space requirements and minimizes passive heat input, enabling efficient signal transmission from cryogenic to room temperatures while maintaining high signal integrity.

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Abstract

Embodiments relate to a flexible waveguide, e.g. for conducting at least one high-frequency signal, e.g. with a frequency equal to or greater than 0 Hz, having the following features: a first metallization, e.g. a first shielding metallization, a second metallization, e.g. a shielding metallization, a flexible substrate which is arranged between the first metallization and the second metallization, and a central conductor, e.g. an inner conductor, which is incorporated into the flexible substrate, wherein the central conductor comprises at least two microstrip lines, and at least one microstrip line of the at least two microstrip lines has a superconductive material.
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