Design of Overmoded Interaction Circuit for 1-kW 95-GHz TWT

Author

Kory, Carol L. ; Read, Michael E. ; Ives, R. Lawrence ; Booske, John H. ; Borchard, Philipp

Author_Institution

Calabazas Creek Res., Inc., San Mateo, CA

Volume

56

Issue

5

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

713

Lastpage

720

Abstract

Advanced simulation tools were used to design major components for a 95-GHz traveling-wave tube (TWT) providing approximately 1-kW of average power. This output power would be challenging, if not impossible, using a fundamental mode circuit TWT design, because of beam-current density and thermal-mechanical-stability issues. We addressed these limitations using an overmoded interaction circuit. The program investigated the circuits´ thermal and electrical performance, including the effect of multiple-propagating modes and spurious oscillations. We also completed the designs for the electron gun and periodic permanent magnet. The design results for the 1-kW 95-GHz TWT are promising.

Keywords

current density; electron guns; integrated circuit design; mechanical stability; millimetre wave integrated circuits; millimetre wave oscillators; permanent magnets; travelling wave tubes; TWT; beam-current density; electron gun; frequency 95 GHz; multiple-propagating modes; oscillations; overmoded interaction circuit; overmoded interaction circuit design; periodic permanent magnet; power 1 kW; thermal-mechanical-stability; traveling-wave tube; Blades; Circuit simulation; Electron beams; Etching; Metallization; Optical beams; Permanent magnets; Power generation; Silicon; Voltage; Millimeter wave; W-band; overmoded; suspended ladder circuit; traveling-wave tube (TWT);

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2009.2015405

Filename

4808117