DocumentCode :
1021696
Title :
Efficiency of tapered backward-wave oscillators
Author :
Haddad, G.J. ; Rowe, J.E.
Author_Institution :
The University of Michigan, Ann Arbor, Mich.
Volume :
11
Issue :
1
fYear :
1964
fDate :
1/1/1964 12:00:00 AM
Firstpage :
20
Lastpage :
30
Abstract :
The effect of a tapered circuit phase velocity on the efficiency of an O-type backward-wave-oscillator (BWO) is investigated. Circuit tapers based on a hard-kernel-bunch approximation are derived. It is shown that when such tapers are applied to realistic BWO\´s higher efficiencies result. An experimental 
-band BWO with a variable pitch helix designed on the basis of the hard-kernel-bunch theory was constructed. An efficiency improvement of 20 per cent to 80 per cent over a frequency range of 2 to 3.75 Gc has been obtained.
-band BWO with a variable pitch helix designed on the basis of the hard-kernel-bunch theory was constructed. An efficiency improvement of 20 per cent to 80 per cent over a frequency range of 2 to 3.75 Gc has been obtained.Keywords :
Circuits; Electron tubes; Forward contracts; Helium; Laboratories; Lagrangian functions; Nonlinear equations; Oscillators; Physics; Radio frequency;
fLanguage :
English
Journal_Title :
Electron Devices, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9383
Type :
jour
DOI :
10.1109/T-ED.1964.15274
Filename :
1473662
Link To Document :
