System method, and apparatus for field scanning
First Claim
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1. A measurement device comprising:
- a sensor having a probe section and configured and arranged to output a plurality of measurement signals, each of said plurality of measurement signals representing an effect of an energy field emanating from a source on said probe section at a corresponding one of a plurality of positional relationships between said probe section and said source in three dimensions;
a positioning device configured and arranged to controllably create said plurality of positional relationships; and
a processing unit configured and arranged to receive data based on the measurement signals and positional information related to the plurality of positional relationships and outputting a field characterization, wherein the field characterization comprises a representation of a three-dimensional nature of the effect of the energy field on said probe section.
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Abstract
A precision apparatus detects and displays two- and three-dimensional properties of electromagnetic fields emanating from a device under test (DUT). Electric, magnetic, electromagnetic (magnitude and direction), and other fields may be investigated either individually or in combination. A peak monitoring mode is also provided for determining a spectrum content figure of merit for the DUT. In an alternative embodiment, the susceptibility of the DUT to fields emanating from a nearby radiating source may be investigated.
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Citations
85 Claims
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1. A measurement device comprising:
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a sensor having a probe section and configured and arranged to output a plurality of measurement signals, each of said plurality of measurement signals representing an effect of an energy field emanating from a source on said probe section at a corresponding one of a plurality of positional relationships between said probe section and said source in three dimensions;
a positioning device configured and arranged to controllably create said plurality of positional relationships; and
a processing unit configured and arranged to receive data based on the measurement signals and positional information related to the plurality of positional relationships and outputting a field characterization, wherein the field characterization comprises a representation of a three-dimensional nature of the effect of the energy field on said probe section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 80, 81, 82, 83, 85)
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15. A method comprising:
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controllably creating a plurality of positional relationships in three dimensions between a sensor and a source of a field, said sensor outputting a plurality of measurement signals corresponding to each of said plurality of positional relationships, each of said data signals being representative of an effect of the field on said sensor at a corresponding one of said plurality of positional relationships; and
processing the measurement signals from said sensor in combination with positional information related to said plurality of positional relationships to obtain a representation of a three-dimensional nature of the effect of the field on said sensor.
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23. A method of obtaining emissions data, said method comprising:
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receiving a first measurement signal from a sensor, the first measurement signal being representative of an effect on the sensor of an electromagnetic field emitted by a device under test;
selecting a frequency at which a magnitude of the first measurement signal exceeds a predetermined threshold;
controllably creating a plurality of positional relationships between the sensor and the device under test;
for each among the plurality of positional relationships, receiving a second measurement signal representative of an effect on the sensor of an electromagnetic field emitted by the device under test; and
for each of the second measurement signals, determining a quality of the second measurement signal at the selected frequency.
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34. A method of obtaining emissions data, said method comprising:
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controllably creating a plurality of positional relationships between a sensor and a source of a field;
receiving a plurality of measurement signals from the sensor, each measurement signal corresponding to a different one of the positional relationships and being representative of an effect of the field on the sensor at the corresponding positional relationship;
for each of the positional relationships, obtaining a data value from the corresponding data signal, the data value being based on a magnitude and a direction of a vector characterizing the field.
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44. A method of obtaining emissions data, said method comprising:
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controllably creating a plurality of positional relationships between a sensor and a source of a field;
receiving a plurality of measurement signals from the sensor, each measurement signal corresponding to a different one of the positional relationships and being representative of an effect of the field on the sensor at the corresponding positional relationship;
for each of the positional relationships, obtaining a data value from the corresponding data signal; and
outputting a representation of the field in at least three dimensions based on the data values. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51)
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52. A method of obtaining susceptibility data, said method comprising:
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positioning a source of a field in proximity to an electronic device;
varying a quality of the field;
receiving a plurality of data signals from the electronic device, each data signal corresponding to a different value of the quality of the field and being representative of an effect of the field on the electronic device. - View Dependent Claims (53, 54, 55, 56, 57, 58, 84)
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74. A method of measuring a vector field, said method comprising:
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controllably creating a plurality of positional relationships in three dimensions between a sensor and a source of a field, at each positional relationship, rotating the sensor with respect to the source and receiving a plurality of measurement signals, each of said measurement signals being representative of an effect of the field on said sensor at the positional relationship; and
for each positional relationship, processing the corresponding measurement signals to obtain a representation of a vector field emanating from the source. - View Dependent Claims (75, 76, 77, 78, 79)
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Specification