Terahertz sheet beam klystron

Details Terahertz sheet beam klystron Terahertz sheet beam klystron

2008-03-03

2011-12-13

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

C315S005390, C315S500000

Reexamination Certificate

active

08076853

ABSTRACT:
A terahertz sheet beam klystron (TSBK) includes an electron gun configured to generate a sheet electron beam and a drift tube through which the sheet beam is propagated. The drift tube is provided with multiple resonant cavities and includes a drift tube circuit including an input RF circuit through which an input RF signal is introduced and an output RF circuit through which an output RF signal is extracted, a collector, and a vacuum envelope. The output RF circuit is configured such that Qe(extraction Q) of the drift tube circuit is comparable to Q0(unloaded Q) of the drift tube circuit, thereby improving the efficiency of the drift tube circuit.

REFERENCES:
patent: 6326730 (2001-12-01), Symons
patent: 6486605 (2002-11-01), Beunas et al.
patent: 7898193 (2011-03-01), Miller et al.
patent: 0030145 (2000-05-01), None
Shin, Young-Min et al., “Novel Coupled-Cavity TWT Structure Using Two-Step LIGA Fabrication,” IEEE Transactions on Plasma Science, vol. 31, No. 6, Dec. 2003, pp. 1317-1324.
Scheitrum, G. et al., “W-Band Sheet Beam Klystron Design,” Gyro-Devices and other Vacuum Electronic Devices, 2004, pp. 525-526.
Carlsten, Bruce E. et al., “Technology Development for a mm-Wave Sheet-Beam Traveling-Wave Tube,” IEEE Transactions on Plasma Science, vol. 33, No. 1, Feb. 2005, pp. 85-93.
Garcia-Garcia, Joan et al., “Optimization of Micromachined Reflex Klystrons for Operation at Terahertz Frequencies,” IEEE Transactions on Microwave Theory and Techniques, vol. 52, No. 10, Oct. 2004, pp. 2366-2370.
International Search Report and Written Opinion, Application No. PCT/US2008/002841, dated Oct. 7, 2008.

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