Low loss transmission line for a 3.4-kW, 93-GHz gyro-traveling-wave ampliﬁer

Craig R. Donaldson; Liang Zhang; Wenlong He; Adrian W. Cross; Kevin Ronald; Colin G. Whyte

doi:10.1109/TED.2020.3039427

Low loss transmission line for a 3.4-kW, 93-GHz gyro-traveling-wave ampliﬁer

Craig R. Donaldson, Liang Zhang, Wenlong He, Adrian W. Cross, Kevin Ronald, Colin G. Whyte

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

7 Citations (Scopus)

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Abstract

In this article, a transmission line system for the propagation of millimeter-wave radiation is presented. The full system includes a TE11-to-TE01 mode converter, waveguide tapers, miter bends, and many straight sections. The design of each of these components is described, and the optimized simulation results are given. The mode converter shows a greater than 96% mode conversion efficiency that can be achieved over a 2% bandwidth at the ${W}$ -band. The miter bends demonstrate a transmission loss of 0.04 dB each over the same bandwidth when they are configured to introduce a mixture of higher order waveguide modes before the reflecting surface. An example transmission line system with a propagation length of 20 m, inclusive of four 90° bends with an oxygen-free high conductivity (OFHC) copper waveguide material, was studied over a 90-96-GHz frequency range and showed a 0.84-dB transmission loss at 93 GHz.

Original language	English
Pages (from-to)	364-368
Number of pages	5
Journal	IEEE Transactions on Electron Devices
Volume	68
Issue number	1
Early online date	8 Dec 2020
DOIs	https://doi.org/10.1109/TED.2020.3039427
Publication status	Published - 6 Jan 2021

Keywords

transmission line
mode converter
mitre bend
gyro-travelling wave tube

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10.1109/TED.2020.3039427

Donaldson-etal-IEEE-TED-2020-Low-loss-transmission-lineAccepted author manuscript, 1.15 MB

Cite this

@article{e15ac8ecdf9b4adda0d63993a8397131,

title = "Low loss transmission line for a 3.4-kW, 93-GHz gyro-traveling-wave ampliﬁer",

abstract = "In this article, a transmission line system for the propagation of millimeter-wave radiation is presented. The full system includes a TE11-to-TE01 mode converter, waveguide tapers, miter bends, and many straight sections. The design of each of these components is described, and the optimized simulation results are given. The mode converter shows a greater than 96% mode conversion efficiency that can be achieved over a 2% bandwidth at the ${W}$ -band. The miter bends demonstrate a transmission loss of 0.04 dB each over the same bandwidth when they are configured to introduce a mixture of higher order waveguide modes before the reflecting surface. An example transmission line system with a propagation length of 20 m, inclusive of four 90° bends with an oxygen-free high conductivity (OFHC) copper waveguide material, was studied over a 90-96-GHz frequency range and showed a 0.84-dB transmission loss at 93 GHz.",

keywords = "transmission line, mode converter, mitre bend, gyro-travelling wave tube",

author = "Donaldson, {Craig R.} and Liang Zhang and Wenlong He and Cross, {Adrian W.} and Kevin Ronald and Whyte, {Colin G.}",

note = "{\textcopyright} 2020 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.",

year = "2021",

month = jan,

day = "6",

doi = "10.1109/TED.2020.3039427",

language = "English",

volume = "68",

pages = "364--368",

journal = "IEEE Transactions on Electron Devices",

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AU - Donaldson, Craig R.

AU - Zhang, Liang

AU - He, Wenlong

AU - Cross, Adrian W.

AU - Ronald, Kevin

AU - Whyte, Colin G.

N1 - © 2020 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.

PY - 2021/1/6

Y1 - 2021/1/6

N2 - In this article, a transmission line system for the propagation of millimeter-wave radiation is presented. The full system includes a TE11-to-TE01 mode converter, waveguide tapers, miter bends, and many straight sections. The design of each of these components is described, and the optimized simulation results are given. The mode converter shows a greater than 96% mode conversion efficiency that can be achieved over a 2% bandwidth at the ${W}$ -band. The miter bends demonstrate a transmission loss of 0.04 dB each over the same bandwidth when they are configured to introduce a mixture of higher order waveguide modes before the reflecting surface. An example transmission line system with a propagation length of 20 m, inclusive of four 90° bends with an oxygen-free high conductivity (OFHC) copper waveguide material, was studied over a 90-96-GHz frequency range and showed a 0.84-dB transmission loss at 93 GHz.

AB - In this article, a transmission line system for the propagation of millimeter-wave radiation is presented. The full system includes a TE11-to-TE01 mode converter, waveguide tapers, miter bends, and many straight sections. The design of each of these components is described, and the optimized simulation results are given. The mode converter shows a greater than 96% mode conversion efficiency that can be achieved over a 2% bandwidth at the ${W}$ -band. The miter bends demonstrate a transmission loss of 0.04 dB each over the same bandwidth when they are configured to introduce a mixture of higher order waveguide modes before the reflecting surface. An example transmission line system with a propagation length of 20 m, inclusive of four 90° bends with an oxygen-free high conductivity (OFHC) copper waveguide material, was studied over a 90-96-GHz frequency range and showed a 0.84-dB transmission loss at 93 GHz.

KW - transmission line

KW - mode converter

KW - mitre bend

KW - gyro-travelling wave tube

UR - https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=16

U2 - 10.1109/TED.2020.3039427

DO - 10.1109/TED.2020.3039427

M3 - Article

SN - 0018-9383

VL - 68

SP - 364

EP - 368

JO - IEEE Transactions on Electron Devices

JF - IEEE Transactions on Electron Devices

IS - 1

ER -

Low loss transmission line for a 3.4-kW, 93-GHz gyro-traveling-wave ampliﬁer

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Low loss transmission line for a 3.4-kW, 93-GHz gyro-traveling-wave ampliﬁer

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DC power supply to drive W-band gyrotron travelling wave amplifier for satellite uplink and wireless telecommunication applications

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