Integrated and compact intelligent transmit and receive system

Abstract

The invention relates to a system (1, 1 ', 1' '). 1 ''), comprising at least two transmit / receive modules intended to be connected to an antenna probe or to a device under test, the module (4) comprising a transmit / receive sub-module (411) connected to a processing and communication sub-module (412), the transmit / receive sub-module (411) comprising two radio frequency outputs, two radio frequency cables (43) extending from the two radio frequency outputs to connect the module (4) to the radiating element or directly to the device under test, the processing and communication sub-module (412) being configured to generate a communication signal based on at least one communication protocol, the communication signal being intended to be transmitted to the transmit / receive sub-module (411) for transmission over the radio frequency cables (43), the transmit / receive sub-module (411) and the processing and communication sub-module (412) are housed in the housing (42).

Description

Technical Field

[0001] The invention relates to a smart transceiver system synchronized anywhere in space, making it possible in particular to network several radiation probes (or antennas) for transmitting and / or receiving electromagnetic radiation as part of beamforming or radiating device characterization.

[0002] The invention also relates to the characterization of a device under test. In this case, the transceiver can be used alone for characterization of a wired device, or connected to a radiation probe and networked via an optical link to generate realistic wireless communication scenarios to or from the communication device under test. Background Art

[0003] A multi-sensor transmitting / receiving system for characterizing a radiation device generally comprises several radiating electromagnetic probes (or antennas) arranged in an arch shape. This arrangement is advantageous because it enables the mechanical displacement axis to be replaced by an electronic scanning axis. Documents WO 2012 / 45877 or WO 2012 / 45879 describe such a system.

[0004] Such a system is advantageous compared to conventional measuring methods of the BCMA type or of the single sensor type. These systems constitute very powerful and fast measuring methods.

[0005] However, for conventional single-sensor or multi-sensor systems, the probes are passive and permanently connected to a fixed operating configuration when installed. In addition, given the inherent difficulties in wiring, it is difficult to position them anywhere in space. Summary of the invention

[0006] The present invention solves the problem of reconfiguring a transmit / receive system for measuring or forming a beam to obtain greater flexibility of use.

[0007] To this end, the present invention relates to a transmitting / receiving system, the system comprising at least two modules, the at least two modules being intended to be connected to an antenna probe or a device under test, each module comprising a transmitting / receiving submodule connected to a processing and communication submodule, the transmitting / receiving submodule comprising two radio frequency outputs, two radio frequency cables extending from the two radio frequency outputs to connect the module to a radiating element or to connect the module directly to the device under test, the processing and communication submodule being configured to generate communication signals according to at least one communication protocol, the communication signals being intended to be transmitted to the transmitting / receiving submodule for transmission on the radio frequency cables, the transmitting / receiving submodules, the processing and communication submodules being housed in a housing, the housing being preferably shielded from the influence of electromagnetic radiation, the modules being further connected together in series by means of optical links.

[0008] The present invention is advantageously supplemented by the following features, taken alone or in any technically possible combination:

[0009] - Each module is associated with a dual polarized antenna connected to the transmit / receive submodule via a radio frequency cable;

[0010] - The RF cable has the shortest possible length allowing the connection of the components with the RF connector while limiting the associated losses.

[0011] The transmitting / receiving system comprises a control unit configured to transmit the communication protocol to the module, the control unit being connected to the module via a dedicated link suitable for the signal, the link being an Ethernet link or an optical link.

[0012] - The modules are connected together in series by means of optical links, the system comprises a control unit connected to a first module of the series of modules via a dedicated link and configured to control the modules and synchronize them together, the control unit being able to control one or several chains of modules.

[0013] - The control unit is configured to control the modules and synchronize the modules together to generate an electromagnetic environment.

[0014] - The modules are arranged in the form of an arch, a disk or a sphere on a support intended to be positioned around the device under test;

[0015] - The control unit is configured to configure each module according to a defined measurement environment.

[0016] Therefore, the present invention proposes a reconfigurable system, so that the transmission / reception system can be completely reconfigured as needed.

[0017] The invention enables the generation of scenes specific to any location in space.

[0018] In the case of several networked systems, the different systems are distributed in space by synchronizing with each other at dedicated locations. Thus, their behavior in time and space can be precisely controlled.

[0019] Each system is advantageously small and therefore compact, which allows it to be arranged anywhere in space. Furthermore, the size leads to a technical concentration, allowing the distribution of a large number of systems.

[0020] For low frequency applications, the invention enables the creation of compact and easily controlled and calibrated measurement systems.For example, plane waves can be generated at a short distance from the walls of a transmitting / receiving system.

[0021] The synchronization of different systems allows to have parallelization of processing operations, which results in increased speed. Thus, a specific processing operation can be performed remotely or distributed across all the different systems.

[0022] Each system can communicate directly with a computer via a USB / Ethernet link.

[0023] Besides the ability to perform measurements in Over The Air (OTA) communications (that is to say any type of wireless communications), the invention can also be used as a measuring instrument of the vector network analyzer, spectrum analyzer, vector signal analyzer type.

[0024] The modular aspect of the system's architecture enables cascading of blocks in order to add functionality such as frequency conversion to higher or lower frequencies, Radar Cross Section (RCS) or Scattering Parameters (S-parameters) measurements.

[0025] The system according to the invention is intended to equip, for example, a multi-sensor radio frequency measurement system (in particular, a spherical near-field measurement pedestal).

[0026] The system according to the invention can be used to generate radiation patterns which can be arbitrarily reconfigured in reception as well as in transmission, in particular by networking the radiation patterns for plane wave synthesis or beam forming.

[0027] The target frequency range of the RF spectrum extends from a few megahertz to hundreds of gigahertz.

[0028] In particular, the invention enables testing and therefore characterization of communication devices with 5G frequencies. The invention enables testing of one or several antennas which are powered by means of a cable or provided directly with their power supply or their integrated receiver and which can operate in transmission and / or reception.

[0029] The invention enables the response of the antenna and the integrated transceiver of a mobile phone to external electromagnetic radiation to be known.

[0030] The present invention enables the response of a Global Navigation Satellite System (GNSS) antenna with an onboard receiver to external electromagnetic interference to be known.

[0031] The invention enables the radiation pattern of a radar antenna to be measured in several directions in space.

[0032] The invention enables the measurement of the sensitivity of a mobile phone in several spatial directions and also the generation of wave propagation scenarios corresponding to environments such as buildings, vehicles and / or urban or rural areas.

[0033] Being able to synchronize all systems allows testing of devices operating at high frequencies. In fact, in 5G technology, a bandwidth of several hundred MHz (e.g., 200 MHz) must be delivered in each 5G MIMO channel. This means being able to analyze 200 million messages in one second. To do this, all systems must be synchronized with each other. This performance is not possible with current systems that rarely reach a bandwidth of 200 MHz, and these systems are also large-sized systems.

[0034] Generally, any communication system can be characterized by means of the invention including the integrated instrumentation and placed in communication situations in realistic scenarios.Thus, due to the arbitrarily reconfigurable nature of the disclosed system, a whole set of tests can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present invention will appear from the following description which is illustrative only and not restrictive and which should be read in conjunction with the accompanying drawings, in which:

[0036] Figure 1 A transmission / reception system according to a first embodiment is shown;

[0037] Figure 2 A transmission / reception system according to a second embodiment is shown;

[0038] Figure 3 Schematically shows the modules of the transmit / receive system;

[0039] Figure 4 The antenna of the probe is shown;

[0040] Figure 5 A transmission / reception system according to a third embodiment is shown;

[0041] Figure 6 A transmission / reception system according to a fourth embodiment is shown;

[0042] Figure 7 A transmission / reception system according to a fifth embodiment is shown;

[0043] Figure 8a and Figure 8b Schematically illustrated are measurements of a communication device in a classic MIMO system with fixed wire configuration compared to a MIMO system obtained with the aid of the system according to the invention. DETAILED DESCRIPTION

[0044] General principles

[0045] Figure 1A transmit / receive system 1 is shown according to a first embodiment, intended to communicate with a device 2, such as a Device Under Test (DUT). According to this first embodiment, the system 1 comprises a transmit / receive module 4 directly connected to the device 2.

[0046] Figure 2 A transmitting / receiving system 1' is shown intended to communicate with a device 2' according to a second embodiment. According to this second embodiment, the system 1' comprises a module 4 connected to the device 2' by a wireless link via an antenna 41 or a probe. This may also be the device 2' under test.

[0047] like Figure 3 As shown, module 4 includes a transmit / receive submodule 411 connected to a processing and communication submodule 412, the transmit / receive submodule 411 includes two RF outputs RF1, RF2, and two RF cables 43 extend from the two RF outputs RF1, RF2 to directly connect module 4 to device 2 or antenna 41.

[0048] Advantageously, the transmit / receive submodule 411 and the processing and communication submodule 412 are housed in a housing 42, which is preferably shielded from electromagnetic radiation. The housing 42 is small, as small as possible to properly house the different elements.

[0049] The processing and communication submodule 412 is configured to generate communication signals according to at least one communication protocol, which are intended to be transmitted to the transmit / receive submodule 411 for transmission on the RF cable 43. The communication protocol is typically one of the 5G, 4G, Wi-Fi, Bluetooth0 communication protocols, or more generally a specification of several rules for a specific type of communication.

[0050] The radio frequency cables 43 have as short a length as possible. They usually do not exceed, for example, 10 cm. However, the length of the radio frequency cables 43 can be adjusted according to the frequency or integration constraints. The advantage is that the module 4 can be positioned as close as possible to the device 2 to which it must be connected, or, if connected to the antenna 41, the losses caused by its wiring can be limited.

[0051] The processing and communication submodule 412 comprises a stage 413 for signal processing and a stage 414 for communication management. The processing stage 413 comprises, for example, a processor and one or more field programmable gate arrays (FPGAs) and enables, on the one hand, processing and calibration of the signal, but also configuration of the shape of the electromagnetic wave (attenuation, phase shift, fading, Doppler effect or time delay effect). Thus, for example, chirps for radar applications can be generated. Complex modulated signals (e.g., 2G, 3G, 4G, 5G, Wi-Fi, radar, etc. signals) can also be generated.

[0052] The signal processing operations that may be performed by module 412 include gain adjustment, phase adjustment, filtering, time shifting, random noise addition, Doppler effect simulation, etc.

[0053] The communication level 413 is configured for communication management and is connected to different interfaces according to the desired communication: USB interface 415, optical interface 416, Ethernet interface 417. The USB interface enables the module 4 to be connected to the measurement system 12 or directly to a computer for programming and debugging the FPGA, the optical interface 416 to an optical link, and the Ethernet interface, for example, to a computer-type control unit 11. The optical interface 416 allows in particular communication between two modules.

[0054] Furthermore, the submodule 412 comprises an interface 418 for supplying power to the submodules 411 , 412 .

[0055] The submodule 411 comprises an interface 419 to be connected to the submodule 412. According to this example, the submodules 411, 412 are located on separate circuit diagrams for better integration into the system, but these submodules may be fully integrated on a single circuit diagram.

[0056] Each module 4 thus comprises a digital transceiver comprising several channels (e.g. two channels) and a directly implemented channel emulator function enabling the generation of advanced communication protocols. The module 4 is reversible, since it can transmit signals (Tx direction) and can also receive signals (Rx direction). In reception (Rx), the module 4 can measure the signal and perform processing operations on it. In transmission (Tx), the module generates the desired signal.

[0057] Thus, each module 4 can be reconfigured as desired, which allows great flexibility in its use.

[0058] Furthermore, the consumption of the system is relatively low compared to conventional devices equipped with multi-sensor systems having a conventional architecture including passive modules. Therefore, there is a power gain in the link budget, which enables the use of signals at lower levels and a corresponding reduction in energy consumption.

[0059] The consumption varies depending on the chosen application requiring more or less computing power. The system of the invention allows a flexible consumption depending on the type of use. The possible applications are varied, taking into account the simplicity of wiring. Each module is able to receive and send CW or complex signals.

[0060] Furthermore, considering that the transmit / receive submodule 411 is as close as possible to the antenna, all radio processing operations, especially the baseband path, occur at this location, and the wired RF link, which is usually a source of loss, is no longer a constraint here.

[0061] Furthermore, processing operations are performed at the level of each module, perfected thanks to locally applied calibration. Furthermore, when a module is calibrated, the calibration data can be stored at the level of the processing and communication submodules, rather than on external devices as is the case with conventional systems.

[0062] The low usage of wired RF links enables the system to be used for measuring large-sized test installations2: aircraft, satellites or cars.

[0063] The communication protocol is provided to the module (particularly, at level 413) via the control unit 10. Depending on the circumstances, the control unit 10 may only include a computer 11, which sends the protocol to the module via a dedicated Ethernet type link 3a. However, in order to allow the module 4 to be sent signals (bandwidth, flow) that are not supported by the Ethernet link, the control unit 10 includes a housing 12 in addition to the computer 11, so that signals that are not supported by the Ethernet link can be generated. The housing 12 is connected to the computer 11 that drives the housing 12. This housing is a Common Public Radio Interface (CRPI) housing. The module 4 is connected to the housing 12 via an optical link 3b in this case. In addition, the control unit 10 may also include a spectrum analyzer 14 connected to the computer 11.

[0064] In the latter case, the housing 12 is advantageously connected to a radio measurement system 13 (Radio Communication Tester (RCT)). The housing 12 thus has the function of also interfacing with conventional measurement equipment (network emulator, complex signal generator, etc.).

[0065] The computer 11 thus enables remote management of the parameterization of the module 4 and it is more generally a device comprising a user interface, a processor and an Ethernet link. The computer 11 also enables identification of faults of the module 4. As will be understood, all the intelligence of the module is located as close as possible to the device under test 2.

[0066] According to a second embodiment, Figure 2 As shown, the module 4 is connected to the device under test 2' via the antenna 41, the antenna 41 is a dual-polarized passive antenna 41, and the device under test 2' is a radiating device, a mobile phone, a tablet computer, or a connected object. Figure 4 As shown in , the passive antenna 41 is advantageously an assembly of two radiating elements 41a, 41b in a cross-shaped assembly, each element of the cross corresponding to a polarization of the radiation of the antenna 41. The passive antenna 41 has dimensions that depend on the expected frequencies associated with the device under test 2'. The advantage of the orthogonal positioning of the two linearly polarized antennas is that the wave vector in the plane of the antennas is fully known, and therefore the electric field specifically at this position.

[0067] The size depends on the frequency band covered by the antenna. For example: 0.4-6GHz, 6-18GHz, 18-50GHz. The higher the frequency band, the smaller the size. The lower the frequency band, the larger the size.

[0068] The passive antenna 41 is connected to the transmit / receive submodule 411 via two radio frequency links 43 (one link for each polarization mode and therefore for each radiating element 41a, 41b of the antenna 41). These radio frequency links must be as short as possible. Specifically, the passive antenna 41 is about a few centimeters away from the housing 42. It will be noted here that this distance is very small and it is sought to have the shortest possible wired link to overcome as much as possible the losses of the wired link inherent to high frequencies. In the case shown here, the losses are limited.

[0069] In fact, the losses of the cable (i.e. the attenuation it causes of the signal) increase significantly with frequency and become limiting above about 20 GHz. Therefore, wired links are acceptable over a few centimeters, but unacceptable over a few meters. Therefore, the use of amplifiers to compensate for the losses of the signal is avoided here, and the overall budget in terms of energy consumption and noise factor is therefore superior to systems where electronics and intelligence lag far behind RF cables.

[0070] Therefore, as shown, the module 4 includes a transmit / receive submodule 411 connected to a processing and communication submodule 412, the transmit / receive submodule 411 including two RF outputs RF1, RF2, and two RF cables 43 extend from the two RF outputs RF1, RF2 to connect the module 4 to the radiating element 41 or directly to the device under test 2.

[0071] Case where several probes are positioned in space

[0072] Figure 5 A transmitting / receiving system 1' according to a third embodiment is shown, which comprises several modules 4, here three modules 4 identical to those already described. The device under test 2' is positioned here on a support 5. This support 5 is movable around an axis of rotation so that the device under test 2 can be positioned in different ways according to the desired measurement. It is provided that a matrix of modules distributed in a plane can be used. In this case, the transmitting / receiving system is used to form a beam, not to test the device under test. Several modules with radiating antennas can be arranged on the same 2D plane to form a network (rectangular in shape, or generally circular), and in this case, a specific beam pointing to one or several directions in space can be formed to transmit or receive signals (Tx / Rx).

[0073] The module 4 is small in size and can be positioned anywhere in space, especially around the device under test.

[0074] The modules 4 are connected in series with each other via high-speed links 6 (preferably optical links). Specifically, each module 4 is connected in series with its adjacent modules via optical links 6 (daisy chain), and the link can be in two directions, that is, the module can communicate with its adjacent modules in two directions.

[0075] The modules 4 are powered by means of power cables connected to a power source (not shown). The power cables connect each module two by two in the same way as the optical links 6.

[0076] The measuring system 1 ′ therefore essentially comprises an optical link 6 and a power supply cable.

[0077] The link between two modules 4 is configured to transmit digital data for this two-to-two communication. Furthermore, the wiring of the modules 4 is simple and allows significant data rates on the optical link.

[0078] In order to operate all the modules, the system 1' again comprises here a control unit 10, which is configured to control the modules 4 around or near the device under test 2' and to synchronize the modules with each other. In particular, the control unit 10 is connected to the modules via dedicated links 3a, 3b (Ethernet or optical links depending on the signal type), communicating with all other modules 4 via the first module of a series of modules 4. Here again, radio frequency links are almost non-existent. The control unit 10 complies with the provisions of the invention regarding Figure 1 Description of the control unit.

[0079] Thanks to the link 3a, 3b between the control unit 10 and the first module of the series of modules 4, the control unit 10 is able to synchronize all the other modules and is able to recognize what each module 4 is doing at each moment.

[0080] This is very important, because the measurement and environment required for the test need real-time control. Therefore, since each module can be parameterized and reconfigured remotely via the control unit 10, great flexibility of use is obtained. In particular, the same data can be sent to all modules 4 (for example, in baseband) and specific processing operations are provided to each module 4. These processing operations (by gain adjustment, phase adjustment, filtering, time displacement, random noise addition, Doppler effect simulation, etc.) help to generate a specific electromagnetic environment. In addition, different "propagation scenarios" or "modeling of propagation channels" can be generated. The purpose is to realize real use scenarios in a controlled environment. For example, telephone use scenarios in an office, or in a car, or on a train, etc.

[0081] The control unit 10 also enables a fault in one of the modules to be identified by self-diagnosis.

[0082] The processing and communication submodule 412 supports the Common Public Radio Interface (CRPI) communication protocol, which allows the module 4 to communicate with its neighboring modules.

[0083] Given that the modules can be reconfigured at will, each module 4 offers the possibility of on-board processing operations, including in particular the correction of errors related to the module's antenna imperfections (orthogonal modes). On-board processing operations between pairs of modules 4 (or multiple probes) for performing measurements of transmission parameters are also possible.

[0084] As already mentioned, advantageously, it can be seen that the only radio frequency links present are those connecting the submodule 411 to the antenna 41 consisting of the transducer radiating element. These links are very short and therefore the associated losses are very low, which no longer constitutes an obstacle to use at the highest frequencies of the 5G spectrum. Furthermore, the low presence of radio frequency links solves the problem of critical link losses at high frequencies (order of magnitude>20GHz).

[0085] Several modules are positioned as arches

[0086] Figure 6 A transmitting / receiving system 1 ″ for measuring electromagnetic radiation of a radiating device 2 ″ according to a fourth embodiment is shown.

[0087] The device under test 2 ′ is advantageously positioned on a support 5 .

[0088] The modules 4 are distributed on a supporting structure 7, which is Figure 6 The support 7 is arched in shape, but other shapes are also possible. For example, a distribution according to a matrix or a spherical structure is possible. The shape of the support 7 depends on the desired measurement environment.

[0089] The advantage of arranging the modules on an arch makes it possible to reconstruct a 3D map of the electromagnetic radiation of the device under test 2″ by rotating the axis of the support 5. Usually, the distribution of the modules and therefore the antennas on the arch is regular for the 3D characterization (the device under test can be passive). Only in the case of specific communication scenarios, only some modules are activated and in this case the device under test is necessarily an active (or autonomous Tx / Rx) communication device. These modules can be positioned spherically (for example fifteen modules distributed in a discrete manner) and in this case positioned in space (with synchronicity and freedom of positioning without constraints related to link losses), as Figure 5 shown.

[0090] The support 5 is movable so as to be able to form a continuous vertical radiation section so as to cover the entire sphere around the device under test 2 ″, thereby obtaining a complete 3D radiation.

[0091] According to this fourth embodiment, the radiating device 2 ″ under test is an antenna characterized in transmission and reception.

[0092] The device under test 2" is connected to the control unit via a radio frequency wired link 8, while the series of modules 4 are connected to the controller 10 via an optical link or an Ethernet link, depending on the signal used to characterize the antenna. Advantageously, this will be used in particular for testing the optical links of 5G antennas. In any case, as already discussed, the modules 4 are connected to each other via optical links 6 (see also Figure 5 and related descriptions).

[0093] Figure 7 A transmitting / receiving system 1 ″′ for measuring electromagnetic radiation of a radiation device 2 ′ according to a fifth embodiment is shown.

[0094] Here again, such a device under test 2' is positioned on a support 5 and is here a communication device such as a mobile phone. In this case, the system comprises a relay antenna A to simulate communication with a base station in the downlink direction, and the module 4 is used to capture the waves emitted by the device under test 2' in the uplink direction. The action is reversed in the direction of the communication. This relay antenna A can be used when it comes to testing the communication object, because full-duplex communication can also be carried out with the module 4. The relay antenna A is connected to the controller 10 via a wired radio frequency link 8.

[0095] When using Figure 6 and Figure 7In the case of the support shown, the housing 42 is housed around the device under test 2' in the support structure 7. This differs from known multi-sensor solutions according to which each antenna is connected to a frame by a radio frequency link that is necessarily larger than in the solution described here, the frame not being able to be positioned as close to the module 4 as possible.

[0096] The invention is also advantageously used for Multiple Input Multiple Output (MIMO) Over The Air (OTA) simulations that typically use centralized channel emulators. Here, due to the invention, such simulations are facilitated due to the architecture of the system of the invention: greater flexibility and simple wiring, decentralized computing power, scalable architecture.

[0097] exist Figure 8a In the figure, the device under test 2' (mobile phone) is placed in an anechoic chamber CA surrounding an antenna A connected to a rack 20 and a control unit 10. The antenna A and the rack 20 enable the simulation of a MIMO environment. In this figure, the complex wiring of each antenna A is seen. In contrast, in Figure 8b In these two examples, the device under test 2' is placed in the center of a module 4 of the system according to the invention with simplified wiring, in particular by means of an optical link 6 to a control unit 10. The advantages of the module according to the invention are seen in these two examples.

[0098] As part of the plane wave generation from the system according to the invention, all I and Q data processing in baseband can be migrated to each probe.

[0099] In accordance with 5G requirements, the system of the present invention enables testing of radiation or communication RF equipment with a wider bandwidth of several hundred MHz over a wider frequency range (up to tens of GHz), and simulates a variety of test conditions such as multipath, Doppler effect, and noise.

Claims

1. A transmitting / receiving system (1, 1', 1"), characterized in that: It includes: At least two transmit / receive modules (4), each module (4) is intended to be connected to an antenna probe or a device under test (2, 2', 2"), and includes a transmit / receive submodule (411) connected to a processing and communication submodule (412), the transmit / receive submodule (411) including two radio frequency outputs (RF1, RF2), two radio frequency cables (43) extending from the two radio frequency outputs to connect the module (4) to a radiating element (41) or to connect the module (4) directly to the device under test, the processing and communication submodule (412) is configured to generate communication signals from at least one communication protocol, the communication signals are intended to be transmitted to the transmit / receive submodule (411) for transmission on the radio frequency cables (43), the transmit / receive submodule (411) and the processing and communication submodule (412) are housed in a housing (42), the housing (42) is shielded from electromagnetic radiation, and the modules (4) are further connected together in series by means of optical links (6).

2. Transmitting / receiving system (1, 1', 1") according to the preceding claim, wherein: Each module (4) is associated with a dual polarized antenna (41) connected to a transmit / receive submodule via a radio frequency cable (43).

3. The transmitting / receiving system (1, 1', 1") according to any one of the preceding claims, wherein: The radio frequency cable (43) has a length of less than 10 centimeters.

4. A transmitting / receiving system (1, 1', 1") according to any one of the preceding claims, comprising a control unit (10) configured to transmit a communication protocol to the module (4), the control unit (10) being connected to the module (4) via a dedicated link suitable for the signal, the link being an Ethernet link (3a) or an optical link (3b).

5. A transmitting / receiving system according to any of the preceding claims, comprising a control unit (10) connected to a first module of a series of modules via a dedicated link (3a, 3b) and configured to control the modules and synchronize the modules together, the control unit (10) being able to control one or several chains of modules (4).

6. The transmitting / receiving system (1, 1', 1") according to claim 5, wherein: The control unit (10) is configured to control the modules (4) and synchronize the modules together to generate an electromagnetic environment.

7. The transmitting / receiving system (1, 1', 1") according to claim 6, wherein: The modules (4) are arranged in the form of an arch, a disk or a sphere on a support (7) intended to be positioned around the device under test.

8. The transmitting / receiving system (1, 1', 1") according to any one of claims 6 to 7, wherein: The control unit (10) is configured to configure each module (4) according to a defined measurement environment.

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