Magnetic low-pass filter
Methods and configurations are disclosed for providing band-pass magnetic filtering of signals in magnetic communications and anomaly detection using diamond nitrogen-vacancy (DNV).
1. A diamond nitrogen-vacancy (DNV) sensor comprising:
a diamond having one or more nitrogen vacancies;
a loop of conductive material positioned adjacent to a portion of the diamond; and
a resistor coupled to a first end of the loop and a second end of the loop, the loop and resistor forming a low pass filter for the DNV sensor.
2. The DNV sensor of claim 1 , wherein the loop comprises a plurality of loops.
3. The DNV sensor of claim 1 , wherein the resistor is a variable resistor.
4. The DNV sensor of claim 1 , wherein the resistor is a potentiometer.
5. The DNV sensor of claim 4 , wherein a modification to the potentiometer selectively attenuates a set of high frequency magnetic signals.
6. A system comprising:
a vacancy sensor including:
a vacancy material having a vacancy,
a loop of conductive material positioned adjacent to a portion of the vacancy material, and
a variable resistor coupled to a first end of the loop and a second end of the loop, the loop and variable resistor forming a low pass filter for the vacancy sensor; and
a controller configured to modify the variable resistor.
7. The system of claim 6 , wherein the controller modifies the variable resistor to selectively attenuate the low pass filter.
8. The system of claim 6 , wherein the controller modifies the variable resistor to selectively attenuate the low pass filter based on an orientation of a detected magnetic signal.
9. A system comprising:
a vacancy sensor including:
a vacancy material having a vacancy,
a loop of conductive material positioned adjacent to a portion of the vacancy material, and
a variable resistor coupled to a first end of the loop and a second end of the loop, the loop and variable resistor forming a low pass filter for the vacancy sensor; and
a controller configured to modify an orientation of the vacancy sensor.
10. The system of claim 9 , wherein the controller modifies the orientation of the vacancy sensor, wherein the vacancy sensor is a diamond nitrogen vacancy sensor, based on an orientation of a detected magnetic signal.