Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Mark Bennett0
Chris Sykes0
James Milne0
Jennifer Rust0
Date of Patent
March 23, 2010
Patent Application Number
11169381
Date Filed
June 29, 2005
Patent Primary Examiner
Patent abstract
A submersible electromagnetic (EM) field generator for seafloor electromagnetic surveying comprising an AC to DC converter operable to generate a DC output from an AC input and a switching module operable to generate a waveform driving signal by selectively switching the DC output. The EM field generator also comprises an antenna that is operable to generate an EM field in response to the waveform driving signal. This design approach of using a switched DC source allows square or rectangular wave EM signals to be generated which have sharp transition characteristics and which are substantially independent of the AC input characteristics.
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