Simulation of rectangular TE10 to circular TE11 terahertz mode converters

J. R. Garner; L. Zhang; C. R. Donaldson; A. W. Cross; A. D. R. Phelps; W. He

doi:10.1109/IRMMW-THz.2016.7758520

Simulation of rectangular TE₁₀ to circular TE₁₁ terahertz mode converters

J. R. Garner, L. Zhang, C. R. Donaldson, A. W. Cross, A. D. R. Phelps, W. He

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

120 Downloads (Pure)

Abstract

Two designs of fundamental mode rectangular to circular waveguide TE₁₀ to TE₁₁ mode converter are presented. The waveguide transitions are optimized for operation as an input coupler on a 372 GHz gyro-TWA for Dynamic Nuclear Polarization (DNP) enhancement of NMR imaging. A T-junction input coupler and a multiple hole directional coupler were optimized for operation between 360-384 GHz. The T-junction coupler and the multiple hole coupler exhibited bandwidths of 10% and 35% respectively with a high coupling factor of > -1 dB.

Original language	English
Title of host publication	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Place of Publication	Piscataway
Number of pages	2
ISBN (Electronic)	9781467384858
DOIs	https://doi.org/10.1109/IRMMW-THz.2016.7758520
Publication status	Published - 1 Dec 2016
Event	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Bella Center, Copenhagen, Denmark Duration: 25 Sept 2016 → 30 Sept 2016 http://terahertz.dk/irmmwthz2016/ http://www.irmmw-thz2016.org/

Publication series

Name	Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves
Publisher	IEEE
ISSN (Print)	2162-2035

Conference

Conference	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Abbreviated title	IRMMW-THz 2016
Country/Territory	Denmark
City	Copenhagen
Period	25/09/16 → 30/09/16
Internet address	http://terahertz.dk/irmmwthz2016/ http://www.irmmw-thz2016.org/

Keywords

couplers
couplings
bandwidth
rectangular waveguides
waveguide transitions
resonant frequency
multiple hole coupler
multiple hole directional coupler
T-junction input coupler
NMR imaging
dynamic nuclear polarization
gyro-TWA
gyrotron-travelling wave amplifier

Access to Document

10.1109/IRMMW-THz.2016.7758520

Garner-etal-IRMMW-THz2016-Simulation-of-rectangular-TE10-to-circular-TE11-terahertz-mode-convertersAccepted author manuscript, 294 KB

Cite this

Garner, J. R., Zhang, L., Donaldson, C. R., Cross, A. W., Phelps, A. D. R., & He, W. (2016). Simulation of rectangular TE₁₀ to circular TE₁₁ terahertz mode converters. In 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 Article 7758520 (Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves).. https://doi.org/10.1109/IRMMW-THz.2016.7758520

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abstract = "Two designs of fundamental mode rectangular to circular waveguide TE10 to TE11 mode converter are presented. The waveguide transitions are optimized for operation as an input coupler on a 372 GHz gyro-TWA for Dynamic Nuclear Polarization (DNP) enhancement of NMR imaging. A T-junction input coupler and a multiple hole directional coupler were optimized for operation between 360-384 GHz. The T-junction coupler and the multiple hole coupler exhibited bandwidths of 10\% and 35\% respectively with a high coupling factor of > -1 dB.",

keywords = "couplers, couplings, bandwidth, rectangular waveguides, waveguide transitions, resonant frequency, multiple hole coupler, multiple hole directional coupler, T-junction input coupler, NMR imaging, dynamic nuclear polarization, gyro-TWA, gyrotron-travelling wave amplifier",

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Garner, JR, Zhang, L , Donaldson, CR, Cross, AW, Phelps, ADR & He, W 2016, Simulation of rectangular TE₁₀ to circular TE₁₁ terahertz mode converters. in 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016., 7758520, Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves, Piscataway, 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016, Copenhagen, Denmark, 25/09/16. https://doi.org/10.1109/IRMMW-THz.2016.7758520

Simulation of rectangular TE₁₀ to circular TE₁₁ terahertz mode converters. / Garner, J. R.; Zhang, L.; Donaldson, C. R. et al.
41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. Piscataway, 2016. 7758520 (Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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AU - He, W.

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N2 - Two designs of fundamental mode rectangular to circular waveguide TE10 to TE11 mode converter are presented. The waveguide transitions are optimized for operation as an input coupler on a 372 GHz gyro-TWA for Dynamic Nuclear Polarization (DNP) enhancement of NMR imaging. A T-junction input coupler and a multiple hole directional coupler were optimized for operation between 360-384 GHz. The T-junction coupler and the multiple hole coupler exhibited bandwidths of 10% and 35% respectively with a high coupling factor of > -1 dB.

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Garner JR, Zhang L , Donaldson CR, Cross AW, Phelps ADR, He W. Simulation of rectangular TE₁₀ to circular TE₁₁ terahertz mode converters. In 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. Piscataway. 2016. 7758520. (Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves). doi: 10.1109/IRMMW-THz.2016.7758520