Waveguide transition with vacuum window for multiband dynamic nuclear polarization systems

Oleksandr Rybalko, Sean Bowen, Vitaliy Zhurbenko, Jan Henrik Ardenkjær-Larsen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A low loss waveguide transition section and oversized microwave vacuum window covering several frequency bands (94 GHz, 140 GHz, 188 GHz) is presented. The transition is compact and was optimized for multiband Dynamic Nuclear Polarization (DNP) systems in a full-wave simulator. The window is more broadband than commercially available windows, which are usually optimized for single band operation. It is demonstrated that high-density polyethylene with urethane adhesive
can be used as a low loss microwave vacuum window in multiband DNP systems. The overall assembly performance and dimensions are found using full-wave simulations. The practical aspects of the window implementation in the waveguide are discussed. To verify the design and simulation results, the window is tested experimentally at the three frequencies of interest.
Original languageEnglish
Article number054705
JournalReview of Scientific Instruments
Volume87
Issue number5
Number of pages5
ISSN0034-6748
DOIs
Publication statusPublished - 2016

Cite this

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title = "Waveguide transition with vacuum window for multiband dynamic nuclear polarization systems",
abstract = "A low loss waveguide transition section and oversized microwave vacuum window covering several frequency bands (94 GHz, 140 GHz, 188 GHz) is presented. The transition is compact and was optimized for multiband Dynamic Nuclear Polarization (DNP) systems in a full-wave simulator. The window is more broadband than commercially available windows, which are usually optimized for single band operation. It is demonstrated that high-density polyethylene with urethane adhesivecan be used as a low loss microwave vacuum window in multiband DNP systems. The overall assembly performance and dimensions are found using full-wave simulations. The practical aspects of the window implementation in the waveguide are discussed. To verify the design and simulation results, the window is tested experimentally at the three frequencies of interest.",
author = "Oleksandr Rybalko and Sean Bowen and Vitaliy Zhurbenko and Ardenkj{\ae}r-Larsen, {Jan Henrik}",
year = "2016",
doi = "10.1063/1.4948294",
language = "English",
volume = "87",
journal = "Review of Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics",
number = "5",

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Waveguide transition with vacuum window for multiband dynamic nuclear polarization systems. / Rybalko, Oleksandr; Bowen, Sean; Zhurbenko, Vitaliy; Ardenkjær-Larsen, Jan Henrik.

In: Review of Scientific Instruments, Vol. 87, No. 5, 054705, 2016.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Waveguide transition with vacuum window for multiband dynamic nuclear polarization systems

AU - Rybalko, Oleksandr

AU - Bowen, Sean

AU - Zhurbenko, Vitaliy

AU - Ardenkjær-Larsen, Jan Henrik

PY - 2016

Y1 - 2016

N2 - A low loss waveguide transition section and oversized microwave vacuum window covering several frequency bands (94 GHz, 140 GHz, 188 GHz) is presented. The transition is compact and was optimized for multiband Dynamic Nuclear Polarization (DNP) systems in a full-wave simulator. The window is more broadband than commercially available windows, which are usually optimized for single band operation. It is demonstrated that high-density polyethylene with urethane adhesivecan be used as a low loss microwave vacuum window in multiband DNP systems. The overall assembly performance and dimensions are found using full-wave simulations. The practical aspects of the window implementation in the waveguide are discussed. To verify the design and simulation results, the window is tested experimentally at the three frequencies of interest.

AB - A low loss waveguide transition section and oversized microwave vacuum window covering several frequency bands (94 GHz, 140 GHz, 188 GHz) is presented. The transition is compact and was optimized for multiband Dynamic Nuclear Polarization (DNP) systems in a full-wave simulator. The window is more broadband than commercially available windows, which are usually optimized for single band operation. It is demonstrated that high-density polyethylene with urethane adhesivecan be used as a low loss microwave vacuum window in multiband DNP systems. The overall assembly performance and dimensions are found using full-wave simulations. The practical aspects of the window implementation in the waveguide are discussed. To verify the design and simulation results, the window is tested experimentally at the three frequencies of interest.

U2 - 10.1063/1.4948294

DO - 10.1063/1.4948294

M3 - Journal article

VL - 87

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

SN - 0034-6748

IS - 5

M1 - 054705

ER -