Radio frequency and microwave imaging with a two-dimensional sensor array

• US 9,500,690 B2
• Filed: 11/07/2013
• Issued: 11/22/2016
• Est. Priority Date: 11/07/2013
• Status: Active Grant

• Current Assignee: Lenovo Enterprise Solutions (Singapore) Pte., Ltd. (Lenovo Group Ltd.)
• Original Assignee: Lenovo Enterprise Solutions (Singapore) Pte., Ltd. (Lenovo Group Ltd.)
• Inventors: Ao, Eric R.
• Primary Examiner(s): Tang, Minh N
• Application Number:
  US14/074,232
• Publication Number:
  US 20150123672A1
• Time in Patent Office: 1,111 Days
• US Class Current: 1/1
• CPC Class Codes: G01R 29/0814 Field measurements related to measuring influence on or from apparatus, components or humans EMC, EMI and similar testing in general G01R31/001, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
• CPC Class Codes: G01R 31/001 Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing measuring electromagnetic fields G01R29/08; circuits for generating HV pulses in dielectric strength testing G01R31/14

Abstract

Embodiments of the present invention disclose a method, computer program product, and system for imaging radio and microwave electromagnetic radiation using a two-dimensional sensor array. A computing system receives a readout signal from one or more of a plurality of frequency sensors, arranged in a two-dimensional array, that have the ability to detect an image of focused radio and microwave frequency radiation. The computing system maps the readout signal of each of the plurality of sensors to a location corresponding to the physical location of the sensor on the two-dimensional array. The computing system converts the readout signal into a computer readable image.

Claims

1. A method for imaging radio and microwave electromagnetic radiation using a two-dimensional sensor array, the method comprising:

receiving a readout signal from each of a plurality of frequency sensors, arranged in a two-dimensional array, wherein the plurality of frequency sensors have the ability to detect radio and microwave frequency radiation emitted from an electrical device and wherein the detected radiation is focused into an image using a focusing mechanism;

mapping the readout signal of each of the plurality of sensors to a location corresponding to the physical location of the sensor on the two-dimensional array; and

converting the readout signal into a computer readable radiation image utilizing the mapping, such that the computer readable radiation image displays the readout signal of each of the plurality of sensors on a single graph according to the physical location of each sensor on the two-dimensional array.

2. The method of claim 1, wherein the focusing mechanism is a Fresnel lens.

3. The method of claim 1, wherein the focusing mechanism is a Fresnel plate.

4. The method of claim 1, wherein the focusing mechanism is an elliptical mirror.

5. The method of claim 1, further comprising:

processing the readout signal using a band pass filter.

6. The method of claim 1, wherein the plurality of frequency sensors is comprised of antennas having one or more wires oriented in a spiral shape to detect circularly polarized radiation.

7. The method of claim 1, further comprising:

carrying the readout signal from each of the plurality of frequency sensors to a signal processor to perform the mapping, utilizing a cable allowing frequencies of up to 18 GHz;

receiving from an optical camera an image of the electrical device in a visible region of an electromagnetic spectrum; and

overlaying the computer readable radiation image onto the image of the electrical device in the visible region of an electromagnetic spectrum to generate a heat map of the electrical device.

8. A computer program product for imaging radio and microwave electromagnetic radiation using a two-dimensional sensor array, the computer program product comprising:

one or more computer-readable storage media and program instructions stored on the one or more computer-readable storage media, the program instructions comprising;

program instructions to receive a readout signal from each of a plurality of frequency sensors, arranged in a two-dimensional array, wherein the plurality of frequency sensors have the ability to detect radio and microwave frequency radiation emitted from an electrical device and wherein the detected radiation is focused into an image using a focusing mechanism;

program instructions to map the readout signal of each of the plurality of sensors to a location corresponding to the physical location of the sensor on the two-dimensional array;

program instructions to convert the readout signal into a computer readable radiation image utilizing the mapping, such that the computer readable radiation image displays the readout signal of each of the plurality of sensors on a single graph according to the physical location of each sensor on the two-dimensional array.

9. The computer program product of claim 8, wherein the focusing mechanism is a Fresnel lens.

10. The computer program product of claim 8, wherein the focusing mechanism is a Fresnel plate.

11. The computer program product of claim 8, wherein the focusing mechanism is an elliptical mirror.

12. The computer program product of claim 8, further comprising:

program instructions to receive an image in the visible electromagnetic spectrum of the electrical device; and

program instructions to compare the readout signal with the image in the visible electromagnetic spectrum.

13. The computer program product of claim 8, further comprising:

program instructions to process the readout signal using a band pass filter.

14. The computer program product of claim 8, wherein the plurality of frequency sensors is comprised of antennas having one or more wires oriented to detect polarized radiation.

15. A computer system for imaging radio and microwave electromagnetic radiation using a two-dimensional sensor array, the computer system comprising:

one or more computer processors;

one or more computer-readable storage media;

program instructions stored on the computer-readable storage media for execution by at least one of the one or more processors, the program instructions comprising;

program instructions to receive a readout signal from each of a plurality of frequency sensors, arranged in a two-dimensional array, wherein the plurality of frequency sensors have the ability to detect radio and microwave frequency radiation emitted from an electrical device and wherein the detected radiation is focused into an image using a focusing mechanism;

program instructions to map the readout signal of each of the plurality of sensors to a location corresponding to the physical location of the sensor on the two-dimensional array;

program instructions to convert the readout signal into a computer readable radiation image utilizing the mapping, such that the computer readable radiation image displays the readout signal of each of the plurality of sensors on a single graph according to the physical location of each sensor on the two-dimensional array.

16. The computer system of claim 15, wherein the focusing mechanism is a Fresnel lens.

17. The computer system of claim 15, wherein the focusing mechanism is a Fresnel plate.

18. The computer system of claim 15, wherein the focusing mechanism is an elliptical mirror.

19. The computer system of claim 15, further comprising:

program instructions to receive an image in the visible electromagnetic spectrum of the electrical device; and

program instructions to compare the readout signal with the image in the visible electromagnetic spectrum.

20. The computer system of claim 15, wherein the plurality of frequency sensors is comprised of antennas having one or more wires oriented to detect polarized radiation.