Systems and methods for evaluating electromagnetic interference
First Claim
Patent Images
1. A method of evaluating electromagnetic interference with operation of an electronic device, comprising:
- producing an electromagnetic transmit signal;
supplying said electromagnetic transmit signal to a test wand antenna to cause said test wand antenna to emit electromagnetic radiation;
sweeping said test wand antenna in close proximity to one or more internal electronic components of said electronic device at the same time said test antenna is emitting said electromagnetic radiation;
exercising said one or more electronic components of said electronic device while said electronic components are exposed to the near field of said electromagnetic radiation emitted by said test antenna; and
monitoring the function of said one or more electronic components of said electronic device during said step of sweeping.
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Accused Products
Abstract
Systems and methods for evaluating electromagnetic interference that may be employed, for among other things, to evaluate electronic system immunity to radiated electromagnetic fields and/or to identify particular electronic system areas that are susceptible to electromagnetic radiation.
16 Citations
22 Claims
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1. A method of evaluating electromagnetic interference with operation of an electronic device, comprising:
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producing an electromagnetic transmit signal; supplying said electromagnetic transmit signal to a test wand antenna to cause said test wand antenna to emit electromagnetic radiation; sweeping said test wand antenna in close proximity to one or more internal electronic components of said electronic device at the same time said test antenna is emitting said electromagnetic radiation; exercising said one or more electronic components of said electronic device while said electronic components are exposed to the near field of said electromagnetic radiation emitted by said test antenna; and monitoring the function of said one or more electronic components of said electronic device during said step of sweeping. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of evaluating electromagnetic interference with operation of an electronic device, comprising:
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producing an electromagnetic transmit signal; supplying said electromagnetic transmit signal to a localized field probe to cause said localized field probe to emit a localized field of electromagnetic radiation; holding said localized field probe with a human hand in close proximity to at least one first electronic component of an electronic device at the same time said localized field probe is emitting said localized field of electromagnetic radiation such that said localized field of electromagnetic radiation exposes said first electronic component to a near field of the localized field without exposing an adjacent second component to the near field of electromagnetic radiation; exercising said at least one electronic component of said electronic device while said at least one electronic component is exposed to the near field of said localized field of electromagnetic radiation emitted by said localized field probe; and monitoring a functionality of said electronic device while said at least one electronic component is exposed to said near field of said localized field of electromagnetic radiation emitted by said localized field probe. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of evaluating electromagnetic interference with operation of an electronic device, comprising:
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producing an electromagnetic transmit signal; supplying said electromagnetic transmit signal to a direct injection field probe; contacting said direct injection field probe with at least one circuit of said electronic device to directly inject said electromagnetic transmit signal into said at least one circuit of said electronic device; exercising said at least one circuit of said electronic device while directly injecting said electromagnetic transmit signal into said at least one circuit of said electronic device; and monitoring a functionality of said electronic device while directly injecting said electromagnetic transmit signal into said at least one circuit of said electronic device; wherein said method is performed to evaluate interference with said electronic device by electromagnetic radiation generated by a given type of wireless device; wherein said electromagnetic transmit signal is selected to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by said given type of wireless device; and wherein said method further comprises generating an electromagnetic signal from an electromagnetic signal source;
adjusting said electromagnetic signal generated by said electromagnetic signal source to produce said electromagnetic transmit signal in a manner to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by said given type of wireless device; and
supplying said electromagnetic transmit signal to said direct injection field probe via a wire. - View Dependent Claims (16, 17)
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18. An electromagnetic interference test system, comprising:
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an electromagnetic signal source; and a hand held test antenna, said hand held test antenna comprising at least one of a test wand antenna, a localized field probe, or a direct injection field probe; wherein said electromagnetic signal source is coupled to said hand held test antenna via a wire; and
wherein said electromagnetic signal source is configured to supply an electromagnetic transmit signal to said localized field probe via said wire;wherein said electromagnetic transmit signal comprises a radio frequency (“
RF”
) transmit signal; and
wherein said electromagnetic transmit signal is selected to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by a given type of wireless device; andwherein said electromagnetic signal source is configured to adjust an electromagnetic signal to produce said electromagnetic transmit signal in a manner to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by said given type of wireless device; and
to supply said electromagnetic transmit signal to said direct injection field probe via a wire. - View Dependent Claims (19)
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20. The method of evaluating electromagnetic interference with operation of an electronic device, comprising:
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producing an electromagnetic transmit signal; supplying said electromagnetic transmit signal to a test wand antenna to cause said test wand antenna to emit electromagnetic radiation; sweeping said test wand antenna in close proximity to one or more internal electronic components of said electronic device at the same time said test antenna is emitting said electromagnetic radiation; exercising said one or more electronic components of said electronic device while said electronic components are exposed to the near field of said electromagnetic radiation emitted by said test antenna; and monitoring the function of said one or more electronic components of said electronic device during said step of sweeping; wherein said electronic device comprises an information handling system, and wherein said electromagnetic transmit signal comprises a RF transmit signal; wherein said method is performed to evaluate interference with said electronic device by electromagnetic radiation generated by a given type of wireless device; and
wherein said electromagnetic transmit signal is selected to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by said given type of wireless device;wherein said electronic device comprises an information handling system; and
wherein said given type of wireless device comprises a GSM wireless card for said information handling system; andwherein said method further comprises sweeping said test wand antenna at the same time said test antenna is emitting said electromagnetic radiation at a distance from said one or more internal electronic components of said information handling system that is substantially equivalent to the distance that said GSM wireless card is operatively disposed from said one or more internal electronic components during operation of said information handling system.
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21. The method of evaluating electromagnetic interference with operation of an electronic device, comprising:
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producing an electromagnetic transmit signal; supplying said electromagnetic transmit signal to a test wand antenna to cause said test wand antenna to emit electromagnetic radiation; sweeping said test wand antenna in close proximity to one or more internal electronic components of said electronic device at the same time said test antenna is emitting said electromagnetic radiation; exercising said one or more electronic components of said electronic device while said electronic components are exposed to the near field of said electromagnetic radiation emitted by said test antenna; and monitoring the function of said one or more electronic components of said electronic device during said step of sweeping; wherein said method is performed to evaluate interference with said electronic device by electromagnetic radiation generated by a given type of wireless device; and
wherein said electromagnetic transmit signal is selected to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by said given type of wireless device; andwherein said method further comprises generating an electromagnetic signal from an electromagnetic signal source;
adjusting said electromagnetic signal generated by said electromagnetic signal source to produce said electromagnetic transmit signal in a manner to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by said given type of wireless device; and
supplying said electromagnetic transmit signal to said test wand antenna via a wire.
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22. A method of evaluating electromagnetic interference with operation of an electronic device, comprising:
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producing an electromagnetic transmit signal; supplying said electromagnetic transmit signal to a localized field probe to cause said localized field probe to emit a localized field of electromagnetic radiation; holding said localized field probe with a human hand in close proximity to at least one electronic component of an electronic device at the same time said localized field probe is emitting said localized field of electromagnetic radiation; exercising said at least one electronic component of said electronic device while said at least one electronic component is exposed to the near field of said localized field of electromagnetic radiation emitted by said localized field probe; and monitoring a functionality of said electronic device while said at least one electronic component is exposed to said near field of said localized field of electromagnetic radiation emitted by said localized field probe; wherein said method is performed to evaluate interference with said electronic device by electromagnetic radiation generated by a given type of wireless device; and
wherein said electromagnetic transmit signal is selected to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by said given type of wireless device; andwherein said method further comprises generating an electromagnetic signal from an electromagnetic signal source;
adjusting said electromagnetic signal generated by said electromagnetic signal source to produce said electromagnetic transmit signal in a manner to match the frequency, field level, and modulation characteristics of electromagnetic radiation generated by said given type of wireless device; and
supplying said electromagnetic transmit signal to said localized field probe via a wire.
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Specification