Title :
A dual-frequency slow wave amplifier
Author :
Zhang, Peng ; Simon, D. ; Lau, Y.Y. ; Greening, Geoffrey ; Franzi, Matthew ; Gilgenbach, Ronald M. ; Hoff, B.
Author_Institution :
Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
Motivated by the recent invention of the recirculating planar magnetron (RPM) [1], we exploit the possible technique of developing a dual-frequency high power microwave (HPM) amplifier. We first study the multi-spectral output characteristics of a novel slow wave structure (SWS) which consists of both upper and lower periodic vane arrays. The SWS is designed such that the operating frequency of the upper cavities is half of that of lower cavities. We analytically derive the dispersion relation for such a dual-frequency SWS. We compare the analytic solution of the cold-tube dispersion diagram with that obtained from the ANSYS HFSS code. Excellent agreement is obtained. The beam-circuit interaction of an injected electron beam is analyzed.
Keywords :
microwave power amplifiers; slow wave structures; HPM amplifier; RPM; beam-circuit interaction; cold-tube dispersion diagram; dispersion relation; dual-frequency SWS; dual-frequency high power microwave amplifier; injected electron beam; lower periodic vane arrays; multispectral output characteristics; operating frequency; recirculating planar magnetron; slow wave structure; upper periodic vane arrays; Cavity resonators; Dispersion; Educational institutions; Green products; Laboratories; Microwave amplifiers; Technological innovation;
Conference_Titel :
Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS), 2014 IEEE 41st International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4799-2711-1
DOI :
10.1109/PLASMA.2014.7012551
