Patent ID: 6538617
Filing Date: 2003-03-25
Classification: G08B

Abstract:
An antenna assembly for sensing a time-varying magnetic field having a predetermined frequency, said antenna assembly comprising:a first element having a sensing axis producing an amplitude response to the magnetic field and a transverse axis orthogonal to said sensing axis, said first element including at least one inductor; and a second element in electrical communication with said first element, said second element having a sensing axis producing an amplitude response to the magnetic field and a transverse axis orthogonal to said sensing axis, said second element sensing axis being orthogonal to said first element sensing axis, either of said first element sensing axis and said first element transverse axis being parallel with said second element transverse axis, said second element not magnetically coupled to said first element, said second element including at least one inductor, said first element and said second element being serially connected thereby producing an antenna assembly having a single pair of output leads.