Title :
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
fDate :
5/1/2001 12:00:00 AM
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 Ez. 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;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
