TY - GEN
T1 - Input coupling systems for terahertz gyro-TWAs
AU - Donaldson, C. R.
AU - Zhang, L.
AU - Garner, J.
AU - He, W.
PY - 2020/2/27
Y1 - 2020/2/27
N2 - Input coupling systems for THz gyrotron traveling wave amplifiers (gyro-TWAs) are presented in this paper. These form one of the most critical parts of the gyro-TWA as it feeds the low power seed signal into the interaction circuit and incorrect design can lead to cessation of the amplification. The T-junction, multihole and multiarm coupler types were simulated in CST Microwave Studio and their optimized reflection and transmission characteristics, operating at a central frequency of 0.37 THz are presented. A scaled multiarm coupler, designed to then operate at 94 GHz, was manufactured and its microwave properties measured on a vector network analyser.
AB - Input coupling systems for THz gyrotron traveling wave amplifiers (gyro-TWAs) are presented in this paper. These form one of the most critical parts of the gyro-TWA as it feeds the low power seed signal into the interaction circuit and incorrect design can lead to cessation of the amplification. The T-junction, multihole and multiarm coupler types were simulated in CST Microwave Studio and their optimized reflection and transmission characteristics, operating at a central frequency of 0.37 THz are presented. A scaled multiarm coupler, designed to then operate at 94 GHz, was manufactured and its microwave properties measured on a vector network analyser.
KW - microwave amplifiers
KW - rectangular waveguides
KW - gyrotrons
KW - travelling wave amplifiers
UR - http://www.scopus.com/inward/record.url?scp=85082118194&partnerID=8YFLogxK
U2 - 10.1109/UCMMT45316.2018.9015697
DO - 10.1109/UCMMT45316.2018.9015697
M3 - Conference contribution book
AN - SCOPUS:85082118194
T3 - 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies, UCMMT 2018 - Proceedings
BT - 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies, UCMMT 2018 - Proceedings
PB - IEEE
CY - Piscataway, N.J.
T2 - 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies, UCMMT 2018
Y2 - 5 September 2018 through 7 September 2018
ER -