Meter-scale High-temperature Superconducting RF Waveguides with Integrated Filters and Attenuators

Solovyov, Vyacheslav F.; Kim, Hyunwoo; Nykypanchuk, Dmytro; Farrell, Paul

doi:10.1109/tasc.2025.3538630

Meter-scale High-temperature Superconducting RF Waveguides with Integrated Filters and Attenuators

Journal Article · Tue Feb 04 04:00:00 EST 2025 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/tasc.2025.3538630· OSTI ID:2511268

Solovyov, Vyacheslav F. ^[1]; Kim, Hyunwoo ^[2]; ^[3]; Farrell, Paul ^[2]

Brookhaven Technology Group, Inc., Stony Brook, NY (United States); Brookhaven Technology Group
Brookhaven Technology Group, Inc., Stony Brook, NY (United States)
Brookhaven National Laboratory (BNL), Upton, NY (United States)

Here, we report the performance of coplanar, multifilament waveguides manufactured from crystalline films of a well-known HTS compound, YBCO, transferred to a low-loss dielectric substrate, such as E-Kapton. The coplanar two-line waveguide delivers low cross-talk, below 20 dB level, and low attenuation, below 4 dB/m at 6 GHz, 77 K. Controlled-impedance 50 Ω waveguides would require a method for reliable patterning narrow, less than 100-micron wide, YBCO traces over a meter length. We report a lithography-etching approach that minimizes the difference in the etching rate of YBCO and the metallization layers of Ag and Cu. An array of metalized vias isolates the traces. We describe the via metallization process that is not damaging to YBCO and compatible with dense, 2 mm period, arrays of vias.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven Technology Group, Inc., Stony Brook, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0021707

OSTI ID:: 2511268

Alternate ID(s):: OSTI ID: 2543025

Journal Information:: IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 5 Vol. 35; ISSN 1051-8223

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Attenuators
Coplanar waveguides
Copper
Films
Filters
High-temperature superconductors
Metallization
Quantum coupling
RF properties
Radio frequency
Scalable interface
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Yttrium barium Copper oxide

Meter-scale High-temperature Superconducting RF Waveguides with Integrated Filters and Attenuators

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References (15)

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