Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With waveguide or long line
Patent
1992-08-14
1995-04-04
Snow, Walter E.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With waveguide or long line
324627, 343703, G01R 2702
Patent
active
054040981
ABSTRACT:
An improved correlation method that computes E field measurements from voltage measurements produced by a TEM cell. Twelve voltage measurements are taken of radiation emanating from a device under test (DUT) for respective frequencies. The measurements are taken for the six faces of a hypothetical cube enclosing the DUT in both polarizations. Using these 12 measurements, the method identifies the face and polarization of the DUT which produces the highest emanation of radiation at that respective frequency. The method obtains three input voltages from these measurements and determines if the assumption of a dipole gain is adequate. If not, the actual gain is calculated and is used in a 3-input correlation algorithm to obtain more correct data regarding the E field emission of the DUT.
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patent: 4837581 (1989-06-01), Hansen et al.
patent: 4968983 (1990-11-01), Maeda
patent: 5053712 (1991-10-01), Hansen
Weiss, D.; "A User's Insight into Radiated Emission Testing With GTEM Cells"; Aug. 1991; IEEE; pp. 157-161.
Bronaugh, E. L., et al; "Radiated Emissions Test Performance of the GHz TEM Cell"; Aug. 1991; IEEE; pp. 1-7.
Garbe, H., et al.; "The GTEM Cell Concept; Applications of this New EMC Test Environment to Radiated Emission and Susceptibility Measurements"; Aug. 1990; IEEE; pp. 152-156.
Abstract: P. Wilson, D. Hansen and D. Koenigstein; "Simulating Open Area Test Site Emission Measurements Based On Data Obtained In a Novel Broadband TEM Cell"; IEEE (1989), pp. 1-7; May 1989.
Kraus, John D., "Antennas"; McGraw-Hill Dec. (1950), pp. 10-31.
Snow Walter E.
The Electro-Mechanics Company
Tobin Christopher M.
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