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Cancellation circuit suppressing electromagnetic interference

[Category : - Computers and computer accessories ]
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The specification discloses a cancellation circuit that suppresses electromagnetic interference in a high speed circuit using a function generator so as to utilize differential signals to cancel the magnetic field and to couple with the electric field without affecting the quality of signals. The differential signals are generated from a clock pin of the function generator, which is phase shifted by a phase shifter and passes through a microstrip antenna or a stripline antenna so as to emit electromagnetic waves with inversed phases, canceling the originally existent electromagnetic waves.