RU176967U1 - RADIO ELECTRONIC MODULE WITH HIDDEN FERRITE POLYCRYSTALLINE TAG - Google Patents

Abstract

The utility model relates to the field of radio engineering, namely to products with hidden tags applied to electronic modules, such as registration tags, checklists, etc. for marking and subsequent identification of packaged electronic modules in any period of their life cycle. Radio-electronic module with a hidden polycrystalline tag made of radar absorbing material, having at least two terminals, one for supplying an input electrical signal, the other for removing the output. In this case, the label is placed inside the case in the form of an insert made of ferrite, occupying at least 1% of the volume of the case and, according to its physical, geometric, volumetric properties, makes its own characteristic contribution to the distortion of the signal passing through the product, converting it, thus, into a kind of frequency identifier moreover, the condition for the authenticity of the radio-electronic module is the coincidence of the measured frequency response of the product with the frequency response, measured and certified at the manufacturing stage of the said product (radio portrait of the product). The technical result consists in the possibility of quick low-energy non-destructive identification of the radio-electronic module, determining its belonging to the marked batch and, as a result, establishing the fact of the authenticity of the investigated batch and the authenticity of the products. 1 s.p. f-ly, 3 ill.

Description

This utility model relates to the field of radio engineering, namely to products with hidden marks applied to electronic modules, for example, registration marks, checklists, etc. for marking and subsequent identification of packaged electronic modules in any period of their life cycle.

At present, due to the unquenchable growth rate of the number of counterfeit products, methods of controlling our own products and identifying counterfeit goods are increasingly in demand. Such methods make it possible to establish the originality of products, for example, before their intended use, which, of course, will increase confidence in the reliability of operation of both the radio product itself and the entire system equipped with the radio product as a whole. There are many methods based on the introduction of tags and how to read them, because in forensics tags based on radioactive isotopes are used, this approach is unsuitable for use in radio engineering, due to the detrimental effect of radiation on the semiconductor components of a radio unit (module).

Also, chemical additives are used as tags in the composition of the body material or in the composition of the marking paint, which can be detected by X-ray microanalysis using a scanning electron microscope, however, this method of detection requires expensive high-vacuum equipment and long research periods, which is its drawback [1, 2] .

Often there is a laser marking, which can be applied both on the outside of the case, and inside the case of electronic products. The disadvantage of the laser mark on the outside of the case is its obviousness, and the laser mark on the inside of the case is the fact that the product must be opened (disassembled) to confirm the authenticity, breaking the seals, moreover, both versions of the laser marks are easily fake if there is a laser installation (certain engraving equipment) .

Also in the field of identification, RFID tags are widespread. Such tags are executed in the form of separate devices, which introduces some redundancy in the already complex radio engineering unit. In addition, reading the RFID tag inside the device can be very problematic or impossible at all (it can be removed from the surface of the device).

Closest to the claimed technical solution is the technical solution considered in patent RU No. 111716 [3], which describes the use in the marking of the case of a semiconductor device, including a case with an integrated circuit crystal, paint with a polycrystalline additive. Such an additive characteristically makes changes in the spectrum of x-ray diffraction and electron diffraction, determining (composing) the uniqueness of the spectrum, which is the identification feature of the product, which establishes the membership of a semiconductor device that is being studied by x-ray diffraction or electron diffraction, to groups of semiconductor devices containing or not containing a polycrystalline additive (filler) in the composition of the paint marking the body. This technical solution has three main drawbacks: firstly, rather expensive bulky equipment that requires some protection of personnel from x-ray radiation, secondly, the relatively long time to obtain the diffraction spectrum, about 2-3 minutes for one radio product, and thirdly, the risk activate the protective sensor in the device, fixing the fact of such a high-energy research and carrying out the corresponding programmed counteraction to the research process itself [4, 5].

The problem to which the claimed utility model is directed is to eliminate the disadvantages of the prototype, namely the reading of hidden tags of a packaged radio product using a fast low-energy method that does not require such expensive equipment as in the prototype, which reduces identification time to several seconds and without the risk of activating protective sensors that respond to high-energy x-ray irradiation.

This problem is solved due to the fact that

a radio electronic module with a hidden polycrystalline label made of ferrite, having at least two terminals, one for supplying an input electrical signal, the other for removing the output, characterized in that the said label is placed inside the case in the form of an insert of ferrite, and takes at least 1% of the body volume; the said tag makes its characteristic contribution to the distortion of the signal passing through the product according to its physical, geometric and volumetric properties, thus forming a kind of frequency identifier, moreover, the condition for the authenticity of the electronic module is the coincidence of the measured frequency response of the product with the frequency response measured and certified at the stage manufacturing said product (radio portrait of the product).

The dependence of the S-characteristics of the signal passing through the product, both through the four-terminal network, is determined both by the internal geometry of the device body and the conditions of reflection of the signal (electromagnetic field) from the internal surfaces of the device (in particular, from the printed circuit board and its components). By changing the effective geometry of the internal volume of the device by changing the propagation and / or reflection conditions of the signal, it is possible to change the frequency response of the device, which will characterize the device itself and which will change when changes are made into the case when foreign components are introduced or the geometry of the device circuit is distorted during reverse engineering. The technical solution is the introduction of a ferrite mark inside the casing, occupying at least 1% of the casing. Thus, the introduction of a label predefined by the above conditions allows for additional covert marking of the device. The information capacity of such a system (the number of possible various labels and, accordingly, various “radio portraits”) is determined by the accuracy of identification (measurement) of the amplitude-frequency characteristic. Therefore, the scope of such marking is limited rather by qualitative rather than quantitative verification, that is, it is advisable to apply this method to a batch of devices or to individual devices in small-scale production.

The technical result provided by the given set of features is the possibility of fast (up to several seconds, which is much faster than the X-ray diffraction method) low-energy (without the risk of activating protective sensors that respond to high-energy X-ray irradiation) non-destructive (integrity, all filling elements of the products are maintained, on the basis of which the guarantee of the batch is determined by the manufacturer) of the identification of the electronic module, determination of its belonging to the mark bath party and, as a consequence, the establishment of the fact of authenticity of the investigated party and the authenticity of the products. At the same time, this technical solution is positioned as first-level identification (express identification), which is carried out by means of a control measurement of the radio portrait and its comparison with the radio portrait, certified when releasing the electronic module at the manufacturer, at the stage of output parameter control. An additional technical effect can be achieved by conducting expert control of the electronic module, carried out when opening the case. The effect is achieved by identifying the polycrystalline label material by x-ray diffraction.

The essence of the utility model is illustrated by drawings, which depict:

In FIG. 1 is an external view of a hidden ferrite mark in the form of six square ferrite plates attached to the inside of the housing cover of the marked radio product;

In FIG. 2 is a variant of connecting a measuring device for reading a radio portrait of a radio electronic module with a hidden polycrystalline label made of ferrite;

In FIG. 3 - graphs of the amplitude-frequency characteristics of a packaged radio product with and without embedded ferrite tags, curve 1 - frequency response of the labeled amplifier, curve 2 - frequency response of the amplifier without a label.

Radio-electronic module with a hidden polycrystalline label made of ferrite (2 in Fig. 2, Fig. 1) with two leads (5, 6 in Fig. 2) for supplying input and output electrical signals with a tag volume of at least 1% of the housing volume for an acceptable distinguishability of changes of the electric signal passing through the radio product (2 in Fig. 2) (1 in Fig. 3). There are various options for placing a hidden polycrystalline mark of conductive material on the inner surfaces of the body of a semiconductor device.

The utility model works as follows, for a radio electronic module with an embedded hidden polycrystalline label made of ferrite (2 in Fig. 2, Fig. 1) at the stage of output control of parameters, when the radio product is released at the factory by a vector network analyzer or frequency response meter (1 in Fig. 2), as from a four-terminal network, S - characteristics (S12 or S21) through passage are taken (measured) by means of the electrical leads (5, 6 in Fig. 2) of the marked radio product (2 in Fig. 2) connected to the ports (3, 4 on Fig. 2) a vector network analyzer, followed by by recording the measured S - characteristics in the passport of the electronic module with an embedded hidden polycrystalline label made of ferrite, which can be monitored throughout the entire product life cycle by monitoring the S - characteristics and comparing them with the certified ones. In this case, the decision on the authenticity of the radio-electronic module is made on the basis of comparing the frequency response of the controlled product with the reference frequency response in the product certificate.

INFORMATION SOURCES

1. Shlyakhov, AR, Davudov, F.E., The essence of forensic examinations of materials, substances and products from them (CEMVI) // Jurisprudence. - 1983. - No. 6.

2. Khrustalev VN, Mitrichev B.C., Fundamentals of forensic research of materials, substances and products from them. Ed. "Peter". -2003.

3. Gorbas A.V., Kutyreva T.A. Semenov A.V., Trushina V.D., Semiconductor device with an authentication control system // Patent RU No. 111716, IPC H01L 21/70, registered December 20, 2011.

4. Eickhoff Steven J., Lai Amit, Ober Christopher, Ardanuc Serhan, Gund Ved, Ruyack Alex, Camera Katerine-Self-Destructing Chip, EP 2924724 A1, H01L 23/00, F41H 13/00 09/30/2015.

5. Chu Jack O., Fritz Gregory M., Hovel Harold J., Kim Young-Hee, Pfeiffer Dirk, Rodbell Kenneth P., Integrated Circuit Tamper Detection and Response, US Patent US 8861728 B2, H01L 23/576, 380 / 52, 10/14/2014.

Claims (2)

1. Radio-electronic module with a hidden polycrystalline label made of ferrite, having at least two terminals, one for supplying an input electrical signal, the other for removing the output, characterized in that the said label is placed inside the case in the form of an insert of ferrite, and does not take less than 1% of the body volume; the said tag makes its characteristic contribution to the distortion of the signal passing through the product according to its physical, geometric and volumetric properties, thus forming a kind of frequency identifier, moreover, the condition for the authenticity of the electronic module is the coincidence of the measured frequency response of the product with the frequency response measured and certified at the stage manufacturing said product (radio portrait of the product). 2. Radio-electronic module with a hidden polycrystalline label made of ferrite according to claim 1, in which additional graphic information for identification is applied to the polycrystalline label.

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