Patent ID: 8816700
Filing Date: 2014-08-26
Classification: G01R

Abstract:
1. A portable device for remotely detecting partial discharges in a discharge source object, the portable device comprising: a housing or portable container for the portable device; a wide-band antenna that operates as an electric field sensor for reception of pulse signals generated by partial discharges, contained in the housing; wherein the wide-band antenna comprises a combination of a first planar conductor with a second conductor, wherein the second conductor comprises a profile converging toward the first planar conductor at one point or along a line, wherein the dimensions of said second conductor are smaller by approximately two orders of magnitude than a wavelength of the electric field caused by the partial discharge to be detected by the wideband antenna, wherein the first planar conductor functions as a ground plane, and wherein the second conductor is mechanically supported by an insulated support to allow the electric field wavelength to be detected to be picked up from a surface of the first planar conductor opposite to the second conductor, so that the wide-band antenna is non-resonant in a band from approximately 0.1 MHz to approximately 100 MHz.