Input coupling systems for millimetre-wave gyrotron travelling wave amplifiers

Liang Zhang; Craig R. Donaldson; Jason Garner; Adrian W. Cross; Wenlong He

doi:10.1049/iet-map.2018.0040

Input coupling systems for millimetre-wave gyrotron travelling wave amplifiers

Liang Zhang, Craig R. Donaldson, Jason Garner, Adrian W. Cross, Wenlong He

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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Abstract

Input couplers for millimetre-wave gyrotron travelling wave amplifiers are presented in this study. A W-band input coupling system composed of a pillbox window, a smoothly curved waveguide bend, a T-junction and a broadband reflector was numerically optimised, constructed and measured. An average transmission coefficient of −2.0 dB over a designed operating frequency range was measured. Additionally, a higher-frequency input coupler for operation at a central frequency of 372 GHz was also designed based on a multiple-hole coupling configuration. The simulated transmission coefficient was −0.5 dB if the ohmic loss is not considered.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	IET Microwaves, Antennas & Propagation
Early online date	9 Apr 2018
DOIs	https://doi.org/10.1049/iet-map.2018.0040
Publication status	E-pub ahead of print - 9 Apr 2018

Keywords

input coupler
gyro-amplifier
millimeter wave sources

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10.1049/iet-map.2018.0040

Zhang-etal-IET-2018-Input-coupling-systems-for-millimetre-wave-gyrotronAccepted author manuscript, 684 KB

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title = "Input coupling systems for millimetre-wave gyrotron travelling wave amplifiers",

abstract = "Input couplers for millimetre-wave gyrotron travelling wave amplifiers are presented in this study. A W-band input coupling system composed of a pillbox window, a smoothly curved waveguide bend, a T-junction and a broadband reflector was numerically optimised, constructed and measured. An average transmission coefficient of −2.0 dB over a designed operating frequency range was measured. Additionally, a higher-frequency input coupler for operation at a central frequency of 372 GHz was also designed based on a multiple-hole coupling configuration. The simulated transmission coefficient was −0.5 dB if the ohmic loss is not considered.",

keywords = "input coupler, gyro-amplifier, millimeter wave sources",

author = "Liang Zhang and Donaldson, {Craig R.} and Jason Garner and Cross, {Adrian W.} and Wenlong He",

note = "This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves Antennas and Propagation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.",

year = "2018",

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day = "9",

doi = "10.1049/iet-map.2018.0040",

language = "English",

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journal = "IET Microwaves, Antennas & Propagation",

issn = "1751-8725",

publisher = "Institution of Engineering and Technology",

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T1 - Input coupling systems for millimetre-wave gyrotron travelling wave amplifiers

AU - Zhang, Liang

AU - Donaldson, Craig R.

AU - Garner, Jason

AU - Cross, Adrian W.

AU - He, Wenlong

N1 - This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves Antennas and Propagation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.

PY - 2018/4/9

Y1 - 2018/4/9

N2 - Input couplers for millimetre-wave gyrotron travelling wave amplifiers are presented in this study. A W-band input coupling system composed of a pillbox window, a smoothly curved waveguide bend, a T-junction and a broadband reflector was numerically optimised, constructed and measured. An average transmission coefficient of −2.0 dB over a designed operating frequency range was measured. Additionally, a higher-frequency input coupler for operation at a central frequency of 372 GHz was also designed based on a multiple-hole coupling configuration. The simulated transmission coefficient was −0.5 dB if the ohmic loss is not considered.

AB - Input couplers for millimetre-wave gyrotron travelling wave amplifiers are presented in this study. A W-band input coupling system composed of a pillbox window, a smoothly curved waveguide bend, a T-junction and a broadband reflector was numerically optimised, constructed and measured. An average transmission coefficient of −2.0 dB over a designed operating frequency range was measured. Additionally, a higher-frequency input coupler for operation at a central frequency of 372 GHz was also designed based on a multiple-hole coupling configuration. The simulated transmission coefficient was −0.5 dB if the ohmic loss is not considered.

KW - input coupler

KW - gyro-amplifier

KW - millimeter wave sources

U2 - 10.1049/iet-map.2018.0040

DO - 10.1049/iet-map.2018.0040

M3 - Article

SN - 1751-8725

SP - 1

EP - 4

JO - IET Microwaves, Antennas & Propagation

JF - IET Microwaves, Antennas & Propagation

ER -

Input coupling systems for millimetre-wave gyrotron travelling wave amplifiers

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Keywords

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