Simulation of rectangular TE10 to circular TE11 terahertz mode converters

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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.

LanguageEnglish
Title of host publication41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Place of PublicationPiscataway
Number of pages2
ISBN (Electronic)9781467384858
DOIs
Publication statusPublished - 1 Dec 2016
Event41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Bella Center, Copenhagen, Denmark
Duration: 25 Sep 201630 Sep 2016
http://terahertz.dk/irmmwthz2016/
http://www.irmmw-thz2016.org/

Publication series

NameProceedings International Conference on Infrared, Millimeter, and Terahertz Waves
PublisherIEEE
ISSN (Print)2162-2035

Conference

Conference41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
Abbreviated titleIRMMW-THz 2016
CountryDenmark
CityCopenhagen
Period25/09/1630/09/16
Internet address

Fingerprint

Circular waveguides
Directional couplers
Waveguides
Polarization
Bandwidth
Magnetic Resonance Imaging

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

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 [7758520] (Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves). Piscataway. https://doi.org/10.1109/IRMMW-THz.2016.7758520
Garner, J. R. ; Zhang, L. ; Donaldson, C. R. ; Cross, A. W. ; Phelps, A. D. R. ; He, W. / Simulation of rectangular TE10 to circular TE11 terahertz mode converters. 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. Piscataway, 2016. (Proceedings International Conference on Infrared, Millimeter, and Terahertz Waves).
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title = "Simulation of rectangular TE10 to circular TE11 terahertz mode converters",
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",
author = "Garner, {J. R.} and L. Zhang and Donaldson, {C. R.} and Cross, {A. W.} and Phelps, {A. D. R.} and W. He",
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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.; Cross, A. W.; Phelps, A. D. R.; He, W.

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 proceedingConference contribution book

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N1 - © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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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). https://doi.org/10.1109/IRMMW-THz.2016.7758520