. . "Radiofrequency power." . . "Bandwidth." . . . . . . . . . . "Radio Frequency RF Power Limitations for Octave Bandwidth Traveling Wave Tubes"@en . . . . "An analysis is given pointing out the physical limitations for the output Radiofrequency (RF) power of octave bandwidth helix TWT's with solid electron beams. An absolute upper output limit is reached with the frequency independent upper RF power limit approximately equal to 2.5 KW at the long wave length end of the microwave spectrum. (Modified author abstract)."@en . "AIR FORCE AVIONICS LAB WRIGHT-PATTERSON AFB OHIO." . . "Microwave tubes." . . "Heat transfer." . . "Traveling wave tubes." . . "Electrical and Electronic Equipment." . . "Helixes." . .