RF source including slow wave tube with lateral outlet ports

Details RF source including slow wave tube with lateral outlet ports RF source including slow wave tube with lateral outlet ports

1994-02-07

1996-06-11

Lee, Benny T.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 39, 315 393, 331 82, 333 21R, H01J 2324, H01J 2536, H01P 116

Patent

active

055258646

ABSTRACT:
Multiple radio frequency (RF) outlet ports are provided along the side of a slow wave tube to establish a distributed RF output in response to the transmission of an e.sup.- beam through the tube. The tube has a periodically rippled inner surface, and the outlet ports are spaced along the tube by substantially integral numbers of ripple periods. When implemented as a backward wave oscillator, RF power is extracted during a single pass through the tube; a travelling wave tube amplifier implementation is also possible. The separation of the RF extraction from the absorption of the e.sup.- beam at the end of the tube eliminates RF reflections and permits water cooling of the e.sup.- beam absorber. The RF extraction ports are also preferably configured as built-in mode converters from a TM.sub.01 cylindrical tube mode to a TE.sub.10 rectangular extraction mode, with four symmetrically arranged rectangular extraction waveguides at each extraction location combining their energies into a single TE.sub.10 output. Reductions in the cylindrical tube diameter after each extraction location reflect radiation back through the tube to cancel back-scattered radiation losses from the extraction ports.

REFERENCES:
patent: 2235527 (1941-03-01), McArthur
patent: 2719271 (1955-09-01), Preston
patent: 2721953 (1955-10-01), Rothstein
patent: 2726291 (1955-12-01), Quate
patent: 2800632 (1957-07-01), Walker
patent: 3037168 (1962-05-01), Forrer
patent: 3080523 (1963-03-01), Miller
patent: 3259786 (1966-07-01), Phillips
patent: 3293482 (1966-12-01), Wolkstein
patent: 3325751 (1967-06-01), Phillips
patent: 4263566 (1981-04-01), Guenard
patent: 4388555 (1983-06-01), Symon et al.
patent: 4912367 (1990-03-01), Schumacher et al.
patent: 5015914 (1991-05-01), Jues et al.
Jennifer M. Butler, "Experimental Investigation Of Twin Traveling Wave Tube Amplifiers Driven By a Single Relativistic Backward Wave Oscillator", A Dissertation Presented to the Faculty of the Graduate School of Cornell University, Jan. 1991.
R. B. Miller, Introduction to the Physics of Intense Charged Particle Beams, Plenum Press, New York, 1985, pp. 31-76.
M. Fazio et al., "Narrow-Band Microwave Generation from an Oscillating Virtual Cathode in a Resonant Cavity", J. Appl. Phys., vol. 65, 1989, p. 1321.
J. Swegle, et al., Phys. Fluids, 28(9), Sep. 1985, pp. 2882-2894.
W. W. Destler et al., "Microwave and Particle Beam Sources and Propagation", SPIE, vol. 873, (1988), pp. 84-91.
J. Hansen, "US TWTS from 1 to 100 GHz", Microwave Journal: 1989 State of the Art Ref. (1989, pp. 179-193).
Phelps, "More Than 10 GW from a Relativistic BWO?", Third National Conference on High Power Microwaves Digest, Dec. 1986, pp. 240-244.
Voss, et al., "Characterization of a High Power Microwave Cross-Field Oscillator Operated at S-Band," Third National Conference on High Power Microwaves Digest, Dec. 1986, pp. 147-148.
Wharton et al., "Relativistic O-Type Oscillator-Amplifier Systems", Intense Microwave and Particle Beams, vol. 1226, Bellingham, Wash., 1990, p. 23.

Affiliated with

Also associated with

Rating

RF source including slow wave tube with lateral outlet ports does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with RF source including slow wave tube with lateral outlet ports, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RF source including slow wave tube with lateral outlet ports will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-353994