Beam-cavity interaction circuit at W-band

Author

Hill, Marc E. ; Fowkes, W.R. ; Lin, X.E. ; Whittum, David H.

Author_Institution

Dept. of Phys., Harvard Univ., Cambridge, MA, USA

Volume

49

Issue

5

fYear

2001

fDate

5/1/2001 12:00:00 AM

Firstpage

998

Lastpage

1000

Abstract

In this paper, we describe the design, fabrication, and bench study of a millimeter-wave cavity employed as a relativistic klystron output structure. The oxygen-free electronic-grade copper cavity was prepared by electro-discharge machining and diffusion bonding, and cleaned and tuned to 91.4 GHz. Measured cavity characteristics are presented and compared with theory, including quality factor Q, coupling parameter β, scattering matrix S₁₁, and axial electric field profile E_z. This paper provides the basis for an understanding of the cavity as a transfer structure

Keywords

Q-factor; S-matrix theory; cavity resonators; klystrons; millimetre wave generation; millimetre wave tubes; relativistic electron beam tubes; 91.4 GHz; W-band; axial electric field profile; beam-cavity interaction circuit; coupling parameter; diffusion bonding; electro-discharge machining; electronic-grade copper cavity; millimeter-wave cavity; quality factor; relativistic klystron output structure; scattering matrix; transfer structure; Copper; Diffusion bonding; Electric variables measurement; Fabrication; Klystrons; Machining; Millimeter wave circuits; Millimeter wave measurements; Q factor; Q measurement;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.920162

Filename

920162