STUDY AND INVESTIGATION LEADING TO THE DESIGN OF BROADBAND HIGH-POWER KLYSTRON AMPLIFIERS
Triannual rept. no. 1, 10 Aug-9 Dec 1966
VARIAN ASSOCIATES INC SAN CARLOS CA EIMAC DIV
Pagination or Media Count:
The purpose of this program is to investigate methods for improving the bandwidth capabilities of high-power klystron amplifiers. The objective is a 1 db bandwidth improvement of at least fifty percent over the current state of the art. Particular emphasis is being placed on the study of extended- interaction resonators, and the possible optimization of these resonators through the use of mode overlapping. The results of the initial investigation into the effects of mode overlapping in extended-interaction resonators is presented. This investigation has been primarily concerned with the influence of a number of different parameters on the interaction impedance, bandwidth, and frequency response of the resonators. The parameters of particular interest are the coupling between the two cavities, the degree of external loading and the location of the external load, the beam synchronization parameter, and the relative frequencies of the two cavities. The initial analysis has been restricted to two-gap resonators. It is shown theoretically that the bandwidth of extended-interaction resonators can be increased through the use of mode overlapping. Comparisons with the bandwidths of other types of resonators at a given maximum impedance level show that a two-gap extended-interaction resonator with mode overlapping can have a 1 db bandwidth advantage of approximately three to one over a two-gap, single-mode, extended-interaction resonator, and close to four to one over a conventional single-gap cavity.
- Electrical and Electronic Equipment