Title :
An analysis of the π-mode stopband caused by asymmetries of a metal-segment-loaded helix as used in broad-band traveling-wave tubes
Author_Institution :
Mitsubishi Electr. Corp., Amagasaki, Japan
fDate :
10/1/1988 12:00:00 AM
Abstract :
An exact formula for the π-mode stopband of an asymmetrical metal-segment-loaded helix is given, based on the concept of the developed tape helix. The formula, which includes all dimensions of the tape helix, support rods and metal segments, can calculate the stopband caused by asymmetries of the support rods and metal segments. The formula can be used in the design of high-power helix-type traveling-wave tubes
Keywords :
travelling-wave-tubes; π-mode stopband; asymmetries; broad-band; broadband TWT; high-power; metal-segment-loaded helix; microwave tubes; support rods; traveling-wave tubes; Analytical models; Coupling circuits; Dielectrics; Distributed parameter circuits; Equations; Frequency; Impedance; Propagation constant; Transmission line matrix methods; Transmission line theory;
Journal_Title :
Electron Devices, IEEE Transactions on
