RADIOVISION DEVICE

Abstract

This patent concerns a compact and portable system for real-time detection and location of electromagnetic emissions in the spectrum used by mobile devices (cell phones and Wi-Fi/Bluetooth devices). The principle of detection and location is based on phased array technology, which enables the synthesis of a directional radiation beam that can be electrically controlled in terms of both its shape and direction. This technology is used primarily in military and astronomical applications. The device also includes localization and control algorithms. This device will allow for detecting and locating electromagnetic emissions by means of an antenna beam scan within a field of view of 8080 degrees. Once the detection and location have been established, the results are overlaid to a visual image captured by a video camera.

Claims

1-7. (canceled)

8. A device for detecting electromagnetic and visible emissions comprising a flat array of antennas which are presented as a phased array located on the upper part of the front of the device, which uses a high-speed beam scan to capture radio frequency (RF) signals from scanned surfaces, where the phased array is capable of synthesizing a directional radiation beam, whose shape and direction can be controlled electrically; where each antenna can change the amplitude and phase and jointly generate the directional radiation beam; where the captured RF signal is processed by high-frequency electronics, which include a printed circuit board (PCB) or board: NN phase shifters connected to antennas that change the relative phase of the received electromagnetic waves, such as radio frequency (RF) signals, where the output of each of the NN phase shifters is combined in-phase into a single output of the synthesized beam, this signal is amplified and filtered, restricting and purifying the signal, reaching a total power detector where the total power of the radio frequency (RF) signal is detected as an analog voltage, which in turn is converted into a digital signal by means of an analog digital converter; in addition, on the phased arrays there is a video camera, in the same focal direction, that produces a visual image; the device also includes a microcomputer that: first, is responsible for controlling and synchronizing the antenna array, phase shifters, amplifiers and filters to create the radiofrequency (RF) image, which is post-processed by establishing the location of the radiofrequency (RF) emissions; second, is responsible for overlaying the images obtained by the camera with the radiofrequency (RF) images and display them on-screen; and third, is responsible for executing the algorithm that provides the user interface; an autonomous power supply to energize all the aforementioned parts; and a casing that envelops all the parts, so that the device remains compact and portable.

9. The device of claim 8, wherein the antenna array comprises 64 to 4 antennas, preferably 16 antennas or transmission elements, laid out as a matrix, which are also capable of detecting multiple bands in the emission frequency range of mobile devices, or in the frequency range of mobile and/or Wifi devices, such as the 700-900 MHz, 1700-2100 MHz, 2400-2700 MHz and 5000 MHz bands.

10. The device of claim 8, wherein the synthesis of a transmission beam in an arbitrary direction through the phased array, is bounded at 9090 degrees.

11. The device of claim 9, wherein the synthesis of a transmission beam in an arbitrary direction through the phased array, is bounded at 9090 degrees.

12. The device of claim 8, wherein the video camera is digital and shows the area in which the radiofrequency RF signal is to be detected.

13. The device of claim 8, wherein the microcomputer sends control signals that allow shifting the phase of each of the phase shifters included in the high frequency electronic board, where it is also able to synchronize the acquisition of optical and radio frequency images with said control signals.

14. The device of claim 8, wherein the minicomputer uses multiple Gaussian detection algorithms during post-processing to establish the location of radio frequency (RF) emissions, which determine the number of emitters and locate the electromagnetic emissions in the radiofrequency (RF) image.

15. The device of claim 8, wherein the visual image captured by the video camera is overlaid with the radiofrequency (RF) detection and place markers at the radio frequency capture sites (RF).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0056] FIG. 1/10

[0057] This figure describes the radiation pattern synthesized from 4 radiating elements (antennas). The pattern is found with an inclination of 16 degrees from the relative phase shifts between the antennas. [0058] (1) Flat antenna array. [0059] (11) Antenna or transmission element

[0060] FIG. 2/10

[0061] This figure presents a general block diagram of the invention. [0062] (1) Flat antenna array. [0063] (2) High frequency electronics [0064] (3) Phase shifters [0065] (4) Total power detector [0066] (5) Digital analog converter (A/DC) [0067] (6) Microcomputer [0068] (7) Power Supply [0069] (8) Screen [0070] (9) Device Protection Casing [0071] (10) Antenna or transmission element [0072] (11) Amplifier [0073] (12) Filter [0074] (13) Video camera. [0075] (14) Combiner

[0076] FIG. 3/10

[0077] This figure represents the geometric layout of the radiating elements, ordered in matrix form, without excluding other layouts. [0078] (10) Antenna or transmission element

[0079] FIG. 4/10

[0080] This figure presents a general block diagram of the plate with the high frequency electronics. [0081] (1) Flat antenna array. [0082] (3) Phase shifters [0083] (10) Antenna or transmission element [0084] (11) Amplifier [0085] (12) Filter [0086] (14) Combiner

[0087] FIG. 5/10

[0088] This figure presents a model of an array of 44 antennas implemented in microstrip antennas for the PCS telephony band. (Scale in mm) [0089] (1) Flat antenna array. [0090] (10) Antenna or transmission element

[0091] FIG. 6/10

[0092] This figure shows the application example of 16 antennas, with amplifiers and outputs. It also has its model of high frequency electronics board using commercial components, without being restrictive to only this type of components. [0093] (1) Flat antenna array. [0094] (2) High frequency electronics [0095] (3) Phase shifters [0096] (4) Total power detector [0097] (5) Digital analog converter (A/DC) [0098] (6) Microcomputer [0099] (7) Power Supply [0100] (10) Antenna or transmission element [0101] (11) Amplifier [0102] (12) Filter, optional [0103] (14) Combiner

[0104] FIG. 7/10

[0105] This figure specifically illustrates the antenna diagrams of application examples 1 to 4 using commercial components, without being limited to only these types of components. (The diagrams of antennas 5 to 8, 9 to 13 and 14 to 16, are similar in terms of their distribution) [0106] (3) Phase shifters [0107] (7) Power Supply [0108] (10) Antenna or transmission element [0109] (14) Combiner

[0110] FIG. 8/10

[0111] This figure presents the diagram for a second circuit board used to convert the measured power into analog voltage. [0112] (4) Total power detector [0113] (7) Power Supply

[0114] FIG. 9/10

[0115] This figure presents the connection diagram of the microcomputer with the camera, the screen, the phase shifters and the A/DC. [0116] (3) Phase shifters [0117] (5) Digital analog converter (A/DC) [0118] (6) Microcomputer [0119] (8) Screen [0120] (13) Video camera.

[0121] FIG. 10/10

[0122] The upper section of this figure shows a model of the implemented system. [0123] (1) Flat antenna array. [0124] (7) Power Supply [0125] (8) Screen [0126] (9) Device Protection Casing [0127] (10) Antenna or transmission element [0128] (13) Video camera.

[0129] The lower diagram presents an exploded view of the system, including the array of antennas, the optical camera, the protective casing, the screen, among other elements.

APPLICATION EXAMPLE

[0130] One application example of this device without restricting its components is implemented using an array of 16 microstrip antennas, two high frequency electronic boards with commercial components and a commercial microcomputer.

[0131] Images of the design of this device are shown in FIGS. 6/10, 7/10 and 8/10.

[0132] The microstrip antennas correspond to rectangular antennas tuned to 1.88 GHz and with an approximate bandwidth of 50 MHz. FIG. 5/10

[0133] The first high frequency electronic board has 16 Analog HMC631LP3 vector modules, which allow shifting the phase and amplitude of the signal received by each of the antennas. These modulators are controlled with digital potentiometers DS3930 by Maxim, which communicate with an I2c bus. The signal is then combined in-phase using 14 TCP-2-272 power combiners by Minicircuits. The signal is then amplified with a low noise amplifier (LNA) model MAAL-007304 by MACOM.

[0134] The second board has a Linear LT5538 model power detector and is used to convert the measured power into an analog voltage.

[0135] The digital analog converter used is the ADS1115, which was commercially purchased with its test plate. The latter is connected to a Raspberry pi 3 microcomputer.

[0136] The incorporation of filters is optional in this device, since the antennas only receive one frequency band.

[0137] On the other hand, the optical digital camera, used in this prototype example, was 800600 mm. In the example presented in FIG. 10/10, the optical camera can be seen over the array of antennas. It is also preferable to position the camera at the center of the antennas since this position simplifies the calculations for the radiofrequency camera.