Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Anthony K. Burrell0
T. Mark McCleskey0
Simon B. Hall0
Anoop Agrawal0
Benjamin P. Warner0
Date of Patent
January 20, 2009
0Patent Application Number
109908810
Date Filed
November 16, 2004
0Patent Primary Examiner
Patent abstract
Radiofrequency attenuator and method. The attenuator includes a pair of transparent windows. A chamber between the windows is filled with molten salt. Preferred molten salts include quarternary ammonium cations and fluorine-containing anions such as tetrafluoroborate (BF4−), hexafluorophosphate (PF6−), hexafluoroarsenate (AsF6−), trifluoromethylsulfonate (CF3SO3−), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N−), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N−) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C−). Radicals or radical cations may be added to or electrochemically generated in the molten salt to enhance the RF attenuation.
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