Design and measurement of a broadband sidewall coupler for a W-band gyro-TWA

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

doi:10.1109/TMTT.2015.2464302

Design and measurement of a broadband sidewall coupler for a W-band gyro-TWA

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

Physics

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

63 Citations (Scopus)

262 Downloads (Pure)

Abstract

The input coupler is an important component for a microwave amplifier. In this paper, a sidewall single-hole input coupler for a W-band gyrotron traveling-wave amplifier that operates at the frequency range of 90–100 GHz was designed and measured. Instead of using a cutoff waveguide, a broadband Braggtype reflector with a small spread in phase was optimized for use as part of the input coupler. The minimum radius of the reflector was two times the size of a cutoff waveguide, which reduced the possibility for some of the beam electrons being collected in this section and lost to the amplifier interaction region.

Original language	English
Pages (from-to)	3183-3190
Number of pages	8
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	63
Issue number	10
Early online date	14 Aug 2015
DOIs	https://doi.org/10.1109/TMTT.2015.2464302
Publication status	Published - 31 Oct 2015

Keywords

Bragg reflector
gyrotron traveling-wave amplifier (gyro-TWA)
input coupler

Access to Document

10.1109/TMTT.2015.2464302

Zhang-etal-IEEE-TOMTT-2015-Design-and-measurement-of-a-broadband-side-wall-couplerAccepted author manuscript, 885 KB

Gyrotron Travelling Wave Amplifier for high field Electron Paramagnetic Resonance
Cross, A. (Principal Investigator), He, W. (Co-investigator) & Ronald, K. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/06/13 → 30/11/16
Project: Research

Measurement of components of a W-band gyro-amplifier using VNA
Zhang, L. (Creator), He, W. (Creator), Donaldson, C. (Creator), Garner, J. (Contributor) & MCELHINNEY, P. (Contributor), University of Strathclyde, 14 Mar 2017
DOI: 10.15129/9677abc3-ce53-4295-b516-9c13c3d12d17
Dataset

Cite this

@article{a28229116fbb4540b78d490c66a508b8,

title = "Design and measurement of a broadband sidewall coupler for a W-band gyro-TWA",

abstract = "The input coupler is an important component for a microwave amplifier. In this paper, a sidewall single-hole input coupler for a W-band gyrotron traveling-wave amplifier that operates at the frequency range of 90–100 GHz was designed and measured. Instead of using a cutoff waveguide, a broadband Braggtype reflector with a small spread in phase was optimized for use as part of the input coupler. The minimum radius of the reflector was two times the size of a cutoff waveguide, which reduced the possibility for some of the beam electrons being collected in this section and lost to the amplifier interaction region.",

keywords = "Bragg reflector, gyrotron traveling-wave amplifier (gyro-TWA), input coupler",

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

year = "2015",

month = oct,

day = "31",

doi = "10.1109/TMTT.2015.2464302",

language = "English",

volume = "63",

pages = "3183--3190",

journal = "IEEE Transactions on Microwave Theory and Techniques ",

issn = "0018-9480",

number = "10",

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T1 - Design and measurement of a broadband sidewall coupler for a W-band gyro-TWA

AU - Zhang, Liang

AU - He, Wenlong

AU - Donaldson, Craig R.

AU - Garner, Jason R.

AU - McElhinney, Paul

AU - Cross, Adrian W.

PY - 2015/10/31

Y1 - 2015/10/31

N2 - The input coupler is an important component for a microwave amplifier. In this paper, a sidewall single-hole input coupler for a W-band gyrotron traveling-wave amplifier that operates at the frequency range of 90–100 GHz was designed and measured. Instead of using a cutoff waveguide, a broadband Braggtype reflector with a small spread in phase was optimized for use as part of the input coupler. The minimum radius of the reflector was two times the size of a cutoff waveguide, which reduced the possibility for some of the beam electrons being collected in this section and lost to the amplifier interaction region.

AB - The input coupler is an important component for a microwave amplifier. In this paper, a sidewall single-hole input coupler for a W-band gyrotron traveling-wave amplifier that operates at the frequency range of 90–100 GHz was designed and measured. Instead of using a cutoff waveguide, a broadband Braggtype reflector with a small spread in phase was optimized for use as part of the input coupler. The minimum radius of the reflector was two times the size of a cutoff waveguide, which reduced the possibility for some of the beam electrons being collected in this section and lost to the amplifier interaction region.

KW - Bragg reflector

KW - gyrotron traveling-wave amplifier (gyro-TWA)

KW - input coupler

U2 - 10.1109/TMTT.2015.2464302

DO - 10.1109/TMTT.2015.2464302

M3 - Article

SN - 0018-9480

VL - 63

SP - 3183

EP - 3190

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 10

ER -

Design and measurement of a broadband sidewall coupler for a W-band gyro-TWA

Abstract

Keywords

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Projects

Gyrotron Travelling Wave Amplifier for high field Electron Paramagnetic Resonance

Datasets

Measurement of components of a W-band gyro-amplifier using VNA

Cite this