Optimization and measurement of a smoothly profiled horn for a W-band gyro-TWA

Liang Zhang; Wenlong He; Craig R. Donaldson; Graham M. Smith; Duncan A. Robertson; Robert I. Hunter; Adrian W. Cross

doi:10.1109/TED.2017.2687949

Optimization and measurement of a smoothly profiled horn for a W-band gyro-TWA

Liang Zhang, Wenlong He, Craig R. Donaldson, Graham M. Smith, Duncan A. Robertson, Robert I. Hunter, Adrian W. Cross

School of Physics and Astronomy

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

Abstract

In this paper, a smoothly profiled horn was designed and manufactured to replace a corrugated output horn for a W-band gyrotron traveling-wave amplifier with improved ultrahigh vacuum compatibility. It was optimized for high vacuum integrity, low reflection, high fundamental Gaussian mode content, low sidelobe levels, and high directivity over the frequency bandwidth of 90-100 GHz. Over this operating frequency band the reflectivity was better than -37 dB and the coupling to a fundamental Gaussian mode was above 97%. The far-field pattern showed a directivity of approximately 27 dB in the measurement with sidelobes lower than -30 dB.

Original language	English
Article number	7892962
Pages (from-to)	2665-2669
Number of pages	5
Journal	IEEE Transactions on Electron Devices
Volume	64
Issue number	6
DOIs	https://doi.org/10.1109/TED.2017.2687949
Publication status	Published - 1 Jun 2017

Keywords

Gaussian mode
gyrotron traveling-wave amplifier (gyro-TWA)
horn
smoothly profiled horn

Access to Document

10.1109/TED.2017.2687949

https://strathprints.strath.ac.uk/60278/

Development of a W-band-gyro: Development of a W-band gyro-amplifier for high power, wideband, pulsed coherent applications
Robertson, D. (PI)
Science & Technology Facilities Council
1/12/15 → 31/05/16
Project: Standard
CLASP: Novel Gyro-TWA amplifier for high power mm-wave radar remote sensing
Smith, G. M. (PI)
Science & Technology Facilities Council
1/05/13 → 30/04/15
Project: Standard

Cite this

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title = "Optimization and measurement of a smoothly profiled horn for a W-band gyro-TWA",

abstract = "In this paper, a smoothly profiled horn was designed and manufactured to replace a corrugated output horn for a W-band gyrotron traveling-wave amplifier with improved ultrahigh vacuum compatibility. It was optimized for high vacuum integrity, low reflection, high fundamental Gaussian mode content, low sidelobe levels, and high directivity over the frequency bandwidth of 90-100 GHz. Over this operating frequency band the reflectivity was better than -37 dB and the coupling to a fundamental Gaussian mode was above 97%. The far-field pattern showed a directivity of approximately 27 dB in the measurement with sidelobes lower than -30 dB.",

keywords = "Gaussian mode, gyrotron traveling-wave amplifier (gyro-TWA), horn, smoothly profiled horn",

author = "Liang Zhang and Wenlong He and Donaldson, {Craig R.} and Smith, {Graham M.} and Robertson, {Duncan A.} and Hunter, {Robert I.} and Cross, {Adrian W.}",

year = "2017",

month = jun,

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doi = "10.1109/TED.2017.2687949",

language = "English",

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pages = "2665--2669",

journal = "IEEE Transactions on Electron Devices",

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AU - Zhang, Liang

AU - He, Wenlong

AU - Donaldson, Craig R.

AU - Smith, Graham M.

AU - Robertson, Duncan A.

AU - Hunter, Robert I.

AU - Cross, Adrian W.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - In this paper, a smoothly profiled horn was designed and manufactured to replace a corrugated output horn for a W-band gyrotron traveling-wave amplifier with improved ultrahigh vacuum compatibility. It was optimized for high vacuum integrity, low reflection, high fundamental Gaussian mode content, low sidelobe levels, and high directivity over the frequency bandwidth of 90-100 GHz. Over this operating frequency band the reflectivity was better than -37 dB and the coupling to a fundamental Gaussian mode was above 97%. The far-field pattern showed a directivity of approximately 27 dB in the measurement with sidelobes lower than -30 dB.

AB - In this paper, a smoothly profiled horn was designed and manufactured to replace a corrugated output horn for a W-band gyrotron traveling-wave amplifier with improved ultrahigh vacuum compatibility. It was optimized for high vacuum integrity, low reflection, high fundamental Gaussian mode content, low sidelobe levels, and high directivity over the frequency bandwidth of 90-100 GHz. Over this operating frequency band the reflectivity was better than -37 dB and the coupling to a fundamental Gaussian mode was above 97%. The far-field pattern showed a directivity of approximately 27 dB in the measurement with sidelobes lower than -30 dB.

KW - Gaussian mode

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

KW - horn

KW - smoothly profiled horn

U2 - 10.1109/TED.2017.2687949

DO - 10.1109/TED.2017.2687949

M3 - Article

AN - SCOPUS:85017142140

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VL - 64

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JO - IEEE Transactions on Electron Devices

JF - IEEE Transactions on Electron Devices

IS - 6

M1 - 7892962

ER -

Optimization and measurement of a smoothly profiled horn for a W-band gyro-TWA

Abstract

Keywords

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Projects

Development of a W-band-gyro: Development of a W-band gyro-amplifier for high power, wideband, pulsed coherent applications

CLASP: Novel Gyro-TWA amplifier for high power mm-wave radar remote sensing

Cite this