Design of W-band coupled-cavity TWT by LIGA fabrication

Author

Shin, Y.M. ; Park, G.S. ; Han, S.T. ; Kim, J.I. ; Scheitrum, G.P. ; Arfin, B. ; Chang, S.S.

Author_Institution

Sch. of Phys., Seoul Nat. Univ., South Korea

fYear

2002

fDate

2002

Firstpage

50

Lastpage

51

Abstract

The ladder-core structure of coupled-cavity TWTs with dual in-line coupling has attracted interest in a high-power mm-wave amplifier. The limit of practical power is 10kW using a solenoid-focused electron beam. The main goal of this paper is to design a circuit capable of producing up to 20kW with a moderate bandwidth and a PPM focusing system. Two-step LIGA is employed for this CCTWT design in order to eliminate the machining required for the beam tunnel and coupling slots and eliminate almost all post-LIGA machining steps.

Keywords

LIGA; cavity resonators; electron beam focusing; electron tube manufacture; pulse position modulation; travelling wave tubes; 0 to 20 kW; CCTWT; LIGA fabrication; PPM focusing system; W-band; coupled-cavity TWT; dual in-line coupling; ladder-core structure; two-step LIGA; Bandwidth; Circuit simulation; Circuit testing; Coupling circuits; Electron beams; Equivalent circuits; Fabrication; Laboratories; Signal analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2002. IVEC 2002. Third IEEE International

Print_ISBN

0-7803-7256-5

Type

conf

DOI

10.1109/IVELEC.2002.999255

Filename

999255