Details

Autor(en) / Beteiligte

• Swenson, Christopher J.
• Packard, Drew A.
• Langelotti, Stephen V.
• Guerin, Emma
• Jordan, Nicholas M.
• Lau, Y.Y.
• McBride, Ryan D.
• Gilgenbach, Ronald M.

Titel

Investigations of the Recirculating Planar Crossed-Field Amplifier

Ist Teil von

• 2021 IEEE International Conference on Plasma Science (ICOPS), 2021, p.1-1

Ort / Verlag

IEEE

Erscheinungsjahr

2021

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• Crossed-Field Amplifiers are widely used, broadband (>10% bandwidth) RF amplifiers that can achieve output powers of several megawatts. The Recirculating Planar Crossed-Field Amplifier (RPCFA) was initially designed by Exelby at the University of Michigan. 1 With a high-power (>150-kW) input signal operating at 3.05 GHz, the RPCFA had a measured gain of 8.7 dB and 10% bandwidth with up to 5-6 MW output power 1 . In recent experiments coupling the input to the output of the RPCFA directly with waveguide, a feedback loop was achieved, and oscillations were observed. The highest peak powers measured during the feedback-oscillation of the RPCFA were between 10-30 kW. These oscillations were observed late in the pulse. Oscillations were suppressed when attenuation was added into the feedback loop. 2 The delay-time between the measured microwave power peaks is being investigated when the feedback loop length is increased.