Investigations of a high gain W-band gyro-TWA

C. R. Donaldson; P. MacInnes; C. W. Robertson; L. Zhang; C. G. Whyte

doi:10.1109/IRMMW-THz50926.2021.9567290

Investigations of a high gain W-band gyro-TWA

C. R. Donaldson, P. MacInnes, C. W. Robertson, L. Zhang, C. G. Whyte

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

Abstract

This paper presents a numerical investigation of alternate gyrotron Traveling Wave Amplifier (gyro-TWA) configurations for increased gain. Previous experimental results showed a maximum stable gain of 37 dB over the frequency range 90-96 GHz. These results were limited in bandwidth by the input power from the solid-state pre-amplifier. The simplest way to mitigate the limited input power available is to increase amplifier gain. Doing so without inducing instability requires the introduction of losses to the RF circuit. We present PIC simulations contrasting a range of new designs combining two gain stages and lossy elements with results for the single section design presented in our earlier experimental program.

Original language	English
Title of host publication	2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)
Place of Publication	Piscataway, NJ
Publisher	IEEE
Number of pages	2
ISBN (Electronic)	9781728194240
ISBN (Print)	9781728194257
DOIs	https://doi.org/10.1109/IRMMW-THz50926.2021.9567290
Publication status	Published - 20 Oct 2021

Keywords

stable gain
PIC simulations
lossy elements

Access to Document

10.1109/IRMMW-THz50926.2021.9567290

Cite this

@inproceedings{c3e529d10efa46d0bc16d0676a30003d,

title = "Investigations of a high gain W-band gyro-TWA",

abstract = "This paper presents a numerical investigation of alternate gyrotron Traveling Wave Amplifier (gyro-TWA) configurations for increased gain. Previous experimental results showed a maximum stable gain of 37 dB over the frequency range 90-96 GHz. These results were limited in bandwidth by the input power from the solid-state pre-amplifier. The simplest way to mitigate the limited input power available is to increase amplifier gain. Doing so without inducing instability requires the introduction of losses to the RF circuit. We present PIC simulations contrasting a range of new designs combining two gain stages and lossy elements with results for the single section design presented in our earlier experimental program.",

keywords = "stable gain, PIC simulations, lossy elements",

author = "Donaldson, {C. R.} and P. MacInnes and Robertson, {C. W.} and L. Zhang and Whyte, {C. G.}",

year = "2021",

month = oct,

day = "20",

doi = "10.1109/IRMMW-THz50926.2021.9567290",

language = "English",

isbn = "9781728194257",

booktitle = "2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)",

publisher = "IEEE",

}

TY - GEN

T1 - Investigations of a high gain W-band gyro-TWA

AU - Donaldson, C. R.

AU - MacInnes, P.

AU - Robertson, C. W.

AU - Zhang, L.

AU - Whyte, C. G.

PY - 2021/10/20

Y1 - 2021/10/20

N2 - This paper presents a numerical investigation of alternate gyrotron Traveling Wave Amplifier (gyro-TWA) configurations for increased gain. Previous experimental results showed a maximum stable gain of 37 dB over the frequency range 90-96 GHz. These results were limited in bandwidth by the input power from the solid-state pre-amplifier. The simplest way to mitigate the limited input power available is to increase amplifier gain. Doing so without inducing instability requires the introduction of losses to the RF circuit. We present PIC simulations contrasting a range of new designs combining two gain stages and lossy elements with results for the single section design presented in our earlier experimental program.

AB - This paper presents a numerical investigation of alternate gyrotron Traveling Wave Amplifier (gyro-TWA) configurations for increased gain. Previous experimental results showed a maximum stable gain of 37 dB over the frequency range 90-96 GHz. These results were limited in bandwidth by the input power from the solid-state pre-amplifier. The simplest way to mitigate the limited input power available is to increase amplifier gain. Doing so without inducing instability requires the introduction of losses to the RF circuit. We present PIC simulations contrasting a range of new designs combining two gain stages and lossy elements with results for the single section design presented in our earlier experimental program.

KW - stable gain

KW - PIC simulations

KW - lossy elements

U2 - 10.1109/IRMMW-THz50926.2021.9567290

DO - 10.1109/IRMMW-THz50926.2021.9567290

M3 - Conference contribution book

SN - 9781728194257

BT - 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)

PB - IEEE

CY - Piscataway, NJ

ER -

Investigations of a high gain W-band gyro-TWA

Abstract

Keywords

Access to Document

Fingerprint

Cite this