公开(公告)号：US20200158910A1

公开(公告)日：2020-05-21

申请号：US16449187

申请日：2019-06-21

Applicant: SeeScan, Inc.

Inventor： Mark S. Tietsworth ,  Stephanie M. Bench ,  Matthew D. Bockman

IPC: G01V15/00 ,  G01V3/08 ,  G01V3/10 ,  G01R29/08

Abstract: The present disclosure relates to electromagnetic marker devices for locating hidden or buried objects. One embodiment includes an antenna having a plurality of conductive windings enclosed in a housing made of a low dielectric constant material and an electronic circuit including a circuit board having circuit elements disposed thereon and electrically coupled to the conductive windings through a connector. The circuit elements receive an input signal having a first frequency from an above-ground transmitter, convert the input signal to a power supply to power up the electronic circuit, generate, in response to the input signal, an output signal having a second frequency different from the first frequency, and provide the output signal, via the antenna element, to an above-ground receiver.