STUDY OF CROSSED-FIELD AMPLIFIERS
Quarterly progress rept. no. 9, 16 Jun-15 Sep 1965
CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB
Pagination or Media Count:
As a part of the project on the shield-gun low noise amplifier, a method of synthesizing crossed-field guns was developed and used to design an electron gun that produces an electron beam having Kino flow characteristics near the cathode and satisfying Brillouin flow conditions near the drift region. Experimental results on the gun built on this basis show excellent agreement with theoretical predictions. The second order corrections to the solution of the first-order paraxial-ray equation used in the synthesis are discussed. The normal mode approach is used to derive the invariant noise parameters of crossed-field amplifiers with an objective to determine the minimum noise-figure. Results of the noise-figure studies based on the field approach are compared with experiment. A simple approximate method to determine the dc potential minimum parameters V sub m and Y sub m is proposed. The difficulty of determining V sub m and Y sub m independently is discussed. Important experimental results, verifying a novel statistical theory of the smooth-bore magnetron, are also reported.
- Electrical and Electronic Equipment