TY - GEN
T1 - High Power Multipactor Suppression in X-Band Waveguide
AU - Gregory, A.
AU - Shaw, Z. C.
AU - Wright, D.
AU - Mankowski, J.
AU - Dickens, J.
AU - Neuber, A.
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - The multipactor effect is detrimental in space-based RF systems through detuning, heating, and causing permanent component damage. Studying thresholds and suppression of multipactor utilizing surface geometries in structures akin to WR-90 waveguide are of specific interest in the presented work. Operating in the dominant TE10 mode, a copper stepped impedance transformer transitions the waveguide to a 1.5 mm height, providing a frequency-gap product conducive for multipactor ignition. The stepped impedance transformer housing is designed as a plug-and-play system, allowing for quick swapping different stepped impedance transformer heights or materials. Input power is injected into the test gap from a coaxial magnetron, operating at 9.4 GHz with a peak power of 250 kW and 2.5 μs pulse width.The setup will enable the measurement of base thresholds for a machined and polished copper surface (material that has undergone a simple cleaning process only), as well as thresholds for multipactor suppression geometries.
AB - The multipactor effect is detrimental in space-based RF systems through detuning, heating, and causing permanent component damage. Studying thresholds and suppression of multipactor utilizing surface geometries in structures akin to WR-90 waveguide are of specific interest in the presented work. Operating in the dominant TE10 mode, a copper stepped impedance transformer transitions the waveguide to a 1.5 mm height, providing a frequency-gap product conducive for multipactor ignition. The stepped impedance transformer housing is designed as a plug-and-play system, allowing for quick swapping different stepped impedance transformer heights or materials. Input power is injected into the test gap from a coaxial magnetron, operating at 9.4 GHz with a peak power of 250 kW and 2.5 μs pulse width.The setup will enable the measurement of base thresholds for a machined and polished copper surface (material that has undergone a simple cleaning process only), as well as thresholds for multipactor suppression geometries.
UR - http://www.scopus.com/inward/record.url?scp=85127236786&partnerID=8YFLogxK
U2 - 10.1109/PPC40517.2021.9733122
DO - 10.1109/PPC40517.2021.9733122
M3 - Conference contribution
AN - SCOPUS:85127236786
T3 - IEEE International Pulsed Power Conference
BT - 2021 IEEE Pulsed Power Conference, PPC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE Pulsed Power Conference, PPC 2021
Y2 - 12 December 2021 through 16 December 2021
ER -