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Broadband omnidirectional RF field intensity indicating device

  • US 3,947,770 A
  • Filed: 07/12/1974
  • Issued: 03/30/1976
  • Est. Priority Date: 07/12/1974
  • Status: Expired due to Term
First Claim
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1. A broadband omnidirectional electromagnetic-field intensity indicating device operating in the 2 MHz to 32 MHz frequency range comprising:

  • an antenna having two planar conductive loops, the planes of said loops being orthogonally disposed, and said planes intersecting to form an axis about which the loops are symmetrically disposed, wherein an incident electromagnetic field will generate a current in each of the loops;

    two current transformers, one connected to each of the loops to convert the current therein to proportional voltage signals;

    a square law detector;

    a summing square rooter, said square law detector and said summing square rooter combining the voltage signals to provide an output signal independent of the angle of arrival of and the frequency of the incident electromagnetic field, and representative of the total resultant intensity of the field; and

    , means for indicating the output signal.

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