DocumentCode :
3555999
Title :
A millimeter-wave tunneladder TWT
Author :
Jacquez, A. ; Karp, A. ; Scott, A.
Author_Institution :
Varian Associates, Inc., Palo Alto, CA
Volume :
29
fYear :
1983
fDate :
1983
Firstpage :
129
Lastpage :
132
Abstract :
A millimeter-wave TWT was developed using a dispersive, high-impedance "forward wave" interaction structure based on a ladder, with non-space-harmonic interaction, for a tube with high gain per inch and high efficiency. The "TunneLadder" interaction structure combines ladder properties modified to accommodate Pierce-gun beam optics in a radially magnetized PH focusing structure. The development involved the fabrication of chemically milled, shaped ladders diffusion brazed to diamond cubes which are in turn active-diffusion brazed to each ridge of a doubly ridged waveguide. Cold-test data are presented, representing the 
and impedance characteristics of the modified ladder circuit. These results were used in small- and large-signal computer programs to predict TWT gain and efficiency. Actual data from tested tubes verify the predicted performance while providing broader bandwidth than expected.
and impedance characteristics of the modified ladder circuit. These results were used in small- and large-signal computer programs to predict TWT gain and efficiency. Actual data from tested tubes verify the predicted performance while providing broader bandwidth than expected.Keywords :
Chemicals; Circuit testing; Coupling circuits; Dispersion; Heat sinks; Impedance; Narrowband; Optical device fabrication; Optical waveguides; Saturation magnetization;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electron Devices Meeting, 1983 International
Type :
conf
DOI :
10.1109/IEDM.1983.190458
Filename :
1483583
Link To Document :
