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US 2026/0079280 A1Published application
Electromagnetic marker devices for buried or hidden use
OwnerStephanie M. Bench, Mark S. Olsson +1inventors
InventorsStephanie M. Bench, Mark S. Olsson, Matthew D. Bockman
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Abstract
The present disclosure relates to electromagnetic marker devices for use in locating hidden or buried objects, the marker devices including a tubular housing with a plurality of conductive windings therein and circuitry to receive an excitation signal at a first frequency and generate an output transmission signal at a second frequency different from the first frequency.
Claims4
A marker device for locating a buried object, comprising:
- a tubular housing made of a low dielectric constant (low K) material having a dielectric constant (K) less than about 3;
- an antenna element comprising a plurality of conductive windings enclosed in the tubular housing;
- and
- an electronic circuit comprising a circuit board electrically coupled to the conductive windings through a connector, the connector including connecting elements at each side of the circuit board for coupling to outer ends of the conductive windings,
- wherein the circuit board comprises a circuitry thereon, the circuitry including:
- an input circuit to receive, via the antenna element, an input excitation signal from a transmitter external to the marker device, wherein the input excitation signal is at a first frequency;
- a power circuit to convert the input excitation signal to a power supply signal for powering the circuitry;
- a processing element to generate an output signal, at frequency different from the input signal, responsive to the input signal;
- and
- an output circuit to provide the output signal to the antenna element for transmission therefrom.
7 more elements
Dependencies are inferred from the claim text.