Title :
Progress on a 94 GHz omniguide traveling-wave tube gain experiment
Author :
Shchegolkov, D.Y. ; Dalmas, D.A. ; Earley, L.M. ; Haynes, W.B. ; Renneke, R.M. ; Simakov, E.I.
Author_Institution :
Los Alamos Nat. Lab., Los Alamos, NM, USA
Abstract :
Compact, efficient, high-bandwidth and high-power mm-wave sources are essential for many applications in secure communications, environmental monitoring, imaging, spectroscopy for remote sensing in nonproliferation, and basic research such as radio astronomy. Commercial microwave tube amplifiers are available at frequencies up to only 100 GHz (W-band) and have to trade off maximum output power against bandwidth. A wide-band mm-wave traveling-wave tube (TWT) amplifier based on a slow-wave cylindrically-symmetric photonic band gap (PBG) structure, or an “omniguide” is being developed at Los Alamos National Laboratory. The omniguide represents a periodic system of concentric dielectric tubes. PBG TWT structures have great potential for very large bandwidth and linear dispersion.
Keywords :
microwave amplifiers; microwave tubes; travelling wave tubes; Los Alamos National Laboratory; concentric dielectric tubes; environmental monitoring; frequency 100 GHz; frequency 94 GHz; high-power mm-wave sources; imaging; microwave tube amplifiers; radio astronomy; remote sensing; secure communications; slow-wave cylindrically-symmetric photonic band gap structure; spectroscopy; wide-band mm-wave traveling-wave tube amplifier;
Conference_Titel :
Plasma Science (ICOPS), 2011 Abstracts IEEE International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-61284-330-8
Electronic_ISBN :
0730-9244
DOI :
10.1109/PLASMA.2011.5993330
