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1. (WO2012098391) ELECTRON TUBE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/098391    International Application No.:    PCT/GB2012/050099
Publication Date: 26.07.2012 International Filing Date: 18.01.2012
IPC:
H01J 23/00 (2006.01), H01J 23/12 (2006.01), H01J 25/587 (2006.01)
Applicants: E2V TECHNOLOGIES (UK) LIMITED [GB/GB]; 106 Waterhouse Lane Chelmsford CM1 2QU (GB) (For All Designated States Except US).
WATSON, Victor Leslie [GB/GB]; (GB) (For US Only)
Inventors: WATSON, Victor Leslie; (GB)
Agent: HARRISON GODDARD FOOTE; 8th Floor 140 London Wall London EC2Y 5DN (GB)
Priority Data:
1101062.6 21.01.2011 GB
Title (EN) ELECTRON TUBE
(FR) TUBE À ÉLECTRONS
Abstract: front page image
(EN)A magnetron has an anode body (1) and including a ceramic sleeve (7). In higher power generators, stray radiation is emitted from this sleeve in addition to the main power launched from the antenna into the waveguide (2), and RF absorbing material is provided. Such absorbers, however, tend to be frequency-selective, and can overheat. According to the invention, a non-metallic jacket (13) containing a dielectric liquid such as water surrounds the sleeve. This provides absorption over a broad band of frequencies, and it is easy to make the jacket have a sufficiently high thermal capacity, for example, by arranging a flow of liquid through it.
(FR)L'invention concerne un corps d'anode de magnétron Hasan (1) et comprenant un manchon en céramique (7). Dans des générateurs de puissance plus élevée, un rayonnement parasite est émis de ce manchon en plus de la puissance principale lancée depuis l'antenne dans le guide d'ondes (2), et un matériau absorbant RF est prévu. De tels absorbeurs tendent toutefois à être sélectifs de la fréquence et peuvent surchauffer. Selon l'invention, une chemise non métallique (13) contenant un liquide diélectrique tel que l'eau entoure le manchon. Cela permet une absorption sur une large bande de fréquences, et il est facile d'amener la chemise à avoir une capacité thermique suffisamment élevée, par exemple en disposant un flux de liquide à travers.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)