DE102020123620A1 - Positioning unit, test device for testing an HF module and method for testing an HF module - Google Patents

Abstract

The invention relates to a positioning unit (10) for accommodating and positioning at least one HF module (2) in a test device (1), comprising a test object holder (12) for accommodating at least one HF module (2), and a movement unit ( 20) for moving the specimen receptacle (12), comprising a first rotary drive (24) with a first axis of rotation (A1) and a second rotary drive (26) with a second axis of rotation (A2). The first rotary drive (24) and the second rotary drive (26) are arranged relative to one another in such a way that the first axis of rotation (A1) and the second axis (A2) have an intersection (S).

Description

The invention relates to a handling and positioning unit for receiving and positioning at least one HF module in a test device.

Furthermore, the invention relates to a test device for testing an RF module.

Furthermore, the invention relates to a method for testing an RF module using a test device.

It is used for measuring and calibrating high-frequency modules (HF modules) such as radar sensors, antennas, transmitting and/or receiving units for high-frequency transmission and for measuring and calibrating components such as a radome, radome materials or a HF bumper required to measure the HF module. These components, such as a radome, radome materials or an HF bumper are also an HF module within the meaning of the invention.

Previous solutions use multi-axis systems to move the HF module, which cause high reflections due to the relatively large amount of space required, which limits the structural design and the accuracy of the movement of the test object. In the past, for example, multi-axis positioning units, industrial robots, hexapods, gimbals or other positioning units were used in which the tolerances of the individual drives add up, resulting in larger deviations. In the case of the aforementioned solutions, additional handling devices are also required for the feeding and transfer of the test specimen, and separate work steps are incurred. The test piece is fed in, for example, by means of another robot.

As a result, this leads to shorter cycle times, which reduces the throughput of test objects. In addition, due to the additional handling and movement units that are provided according to the prior art, additional reflections on the surfaces of the handling and movement units arise. Such reflections are undesirable and can lead to measurement errors.

Proceeding from this, the invention is based on the object of creating a positioning unit for an HF module which, on the one hand, has a simplified structure and which overcomes the disadvantages of the previously known positioning devices.

This object is solved by the subject matter of claim 1. Advantageous developments and refinements are the subject of the subclaims.

According to the invention, a positioning unit for receiving and positioning at least one HF module in a test device is provided. The positioning unit includes a test piece holder for holding at least one HF module and a movement unit for moving the test piece holder. The movement unit comprises a first rotary drive with a first axis of rotation and a second rotary drive with a second axis of rotation. The first rotary drive and the second rotary drive are arranged relative to one another in such a way that the first axis of rotation and the second axis of rotation have an intersection point.

Furthermore, according to the invention, a test device for testing HF modules is provided, comprising at least one such positioning unit or a positioning unit developed as described below and at least one reference device.

Furthermore, according to the invention, a method for testing an RF module using a test device, in particular a test device, as described above or further developed as described below, is provided. The method comprises the following steps: providing a test device with a positioning unit for accommodating and positioning at least one HF module, comprising: a test piece holder for accommodating at least one HF module, and a movement unit for moving the test piece holder, comprising a first rotary drive a first axis of rotation and a second rotary drive having a second axis of rotation; Placing the RF module in the DUT receptacle; Testing the RF module.

The positioning unit according to the invention, the test device according to the invention and the method according to the invention make it possible to align an RF module as a test object as precisely as possible. This alignment is preferably done to a reference device such as a simulated target. The reference device can be, for example, a real radar target, an active, passive, analogue or digital target simulation, a transmitting and/or receiving antenna. The HF module can have at least one emission source and/or a receiver. The positioning unit is designed to move the sample holder and the HF module in the azimuth and elevation directions. The movement unit is used for this. For this purpose, the movement unit comprises a first rotary drive with a first axis of rotation and a second rotary drive with a second axis of rotation.

The positioning unit according to the invention, the test device according to the invention and the The method according to the invention also makes it possible for the reflections that occur when testing (measuring/calibrating) the HF modules to be kept as low as possible. This is achieved by keeping the reflective component inside the test device as small as possible. In order to realize this, two rotary drives are formed, the axes of rotation of which are preferably arranged orthogonally to one another.

The construction according to the invention creates a high-precision positioning that makes it possible to generate the smallest possible reflection within the test device and, at the same time, to realize a short overall cycle time.

According to the invention, the HF module can thus be supplied as a test object in a simple manner without requiring an additional handling device or handling transitions inside the test device, as was the case according to the previous solutions.

Rather, according to the invention, a solution is created that makes it possible to manually or automatically feed HF modules from outside the test device and to place them on the positioning unit.

Furthermore, it is possible according to the invention to realize short cycle times and to overcome the disadvantages of existing solutions. Furthermore, compared to existing solutions, it is possible to reduce unwanted reflections inside the test device, since additional handling units do not have to be provided as in the prior art

The HF module is placed as a test item in the test item holder as precisely as possible. This placement on the test item holder can preferably take place in a removal position of the test item holder, with the HF module being able to be done by a loading device. Such a loading device can be, for example, a flap or hatch, through which an RF module can be inserted manually or automatically from the outside.

The RF module is positioned within the test fixture by the positioning unit. When testing the HF module, the HF module as the test object is preferably positioned with great precision and can be aligned by the positioning unit to one or more reference devices arranged within the test device. A calibration of the HF module can preferably be carried out in this way.

Furthermore, the test device has a device for signal delay. This can, for example, be a radar target simulator with analogue, digital or passive signal delay or a passive reflector without propagation delay.

During target simulation, a high-frequency sensor signal is emitted by the radar sensor and recorded by the target simulator using an antenna. The signal is then delayed analogously, digitally or passively and sent back to the radar sensor using the same or a different antenna.

The signal delay device is designed in such a way that the HF module and/or the at least one referencing device are coupled to it, so that a target distance of more than 50 m, preferably more than 100 m, more preferably more than 150 m, in particular more than 200 m, is simulated can. The result of this is that the HF module can be tested for such target distances by the test device according to the invention, which is only a few meters in size.

The design according to the invention also results in a compact design of the test device and in particular of the positioning unit.

In a further development, the test item holder is arranged in such a way that an HF module can be placed on the test item holder at the intersection of the axes of rotation.

This ensures that the specimen holder always remains in the same position relative to the intersection of the two axes of rotation when the rotary motors are actuated and when the rotary axes are rotated. The HF module can be placed in such a way that it always remains at the intersection. The control of the positioning unit and also the actual measurement and the evaluation of the measured values are simplified by this configuration. This saves computing power and cycle times can be reduced.

In one refinement, the method provides that the step of placing the HF module provides for the HF module to be placed on the test specimen receptacle at an intersection of the first axis of rotation and the second axis of rotation.

This ensures that the test piece holder always remains at the intersection of the two axes of rotation when the rotary motors are actuated and when the rotary axes are rotated. The control of the positioning unit and also the actual Measurement and the evaluation of the measured values are simplified by this configuration.

Furthermore, it can be provided that the test item receptacle is designed in such a way that a radiation center of the HF module can be placed at the intersection of the first and second axes of rotation.

According to the method, a center of radiation of the RF module can be placed at the intersection of the first and second axes of rotation.

This ensures that the radiation center of the HF module always remains at the intersection of the two axes of rotation when the rotary motors are actuated and when the rotary axes are rotated. The control of the positioning unit and also the actual measurement and the evaluation of the measured values are simplified by this configuration.

It can be provided that the test item holder has an electrical interface. The test item holder can be designed to provide the data recorded by a receiving antenna of the HF module via the electrical interface for further processing and/or evaluation.

In an embodiment of the method, the HF module can be fixed mechanically at the intersection of the first and second axes and an electrical contact can be established with the test object using an adapter. The adapter can, for example, be actuated pneumatically.

Furthermore, it can be provided that the positioning unit has a linear drive, which is designed to linearly displace the sample holder in the direction of the first axis of rotation. The linear drive is preferably part of the movement device.

By providing a linear drive, the sample holder can be displaced in a translatory manner. This makes it possible for the sample holder to be shiftable into different positions, so that the HF module can also be transferred into different positions. These positions are preferably a test position, a removal position or for variable adjustment of the test specimen to its ideal position.

Furthermore, the provision of such a linear drive enables the positioning unit and the sample holder to be moved in and out more quickly in comparison to the existing solutions between the test position and the removal position.

In addition, this further increases the overall process speed and thus the number of cycles.

The provision of the linear drive also means that the test device and the positioning unit can be constructed in a compact manner.

In an embodiment of the method, it can be provided that it also has the following step, in particular after the step of placing the HF module: Linear displacement of the sample holder in the direction of the first axis of rotation in order to transfer the HF module to a test position.

Furthermore, in an embodiment of the method it can be provided that it also has the following step, in particular after the step of testing the HF module: Linear displacement of the sample holder in the direction of the first axis of rotation in order to transfer the HF module to a removal position.

In an embodiment, it can be provided that the test item holder can be rotated about the first axis of rotation by the first rotary drive.

In a further development of the method, it can be provided that it also has the following step, in particular the step of testing the HF module, the following sub-step: Rotating the test item holder by the first rotary drive about the first axis of rotation and measuring the HF module, in particular with regard to an azimuth characteristic of the RF module.

The azimuth characteristic of the antenna is the characteristic of the HF module in the azimuth direction, i.e. the horizontal viewing direction (left/right) when the HF module is installed in the vehicle.

The (azimuth) characteristic of the HF module to be measured can be, for example, the antenna characteristic, power characteristic, polarization or phase behavior of an antenna or sensor antenna of the HF module.

The azimuth characteristic of the HF module is recorded and/or measured during or after the rotation of the test piece holder and the HF module around the first axis.

In an advantageous embodiment, the test item holder can be rotated about the first axis of rotation in such a way that the center of emission of the HF module can be rotated about the point of intersection of the axes.

Furthermore, it can be provided that the test item holder is rotated about the first axis of rotation in such a way that the center of radiation of the HF module remains at the intersection of the axes.

This ensures that when the orientation of the HF module is changed by the first axis of rotation, the position of the center of radiation does not change and is only rotated, and precise measurement of the HF module is possible.

Furthermore, the test item holder can be rotated about the second axis of rotation by the second rotary drive.

In an embodiment of the method, it can be provided that it also has the following step, in particular the step of testing the HF module, the following sub-step: Rotating the test object holder by the second rotary drive about the second axis of rotation, preferably by 90°, and measuring the HF Module in relation to different rotational positions of the first rotary drive, in particular in relation to an elevation characteristic of the RF module.

After turning 90 degrees, the elevation can be recorded by turning around the first axis.

The elevation characteristic of the antenna is the characteristic of the HF module in the elevation direction, i.e. the vertical viewing direction (above/below) when the HF module is installed in the vehicle.

The (elevation) characteristic of the HF module to be measured can be, for example, the antenna characteristic, power characteristic, polarization or phase behavior of an antenna of the HF module.

The elation characteristic of the HF module is recorded and/or measured during or after the rotation of the test piece holder and the HF module around the first axis.

In an advantageous embodiment, the test item holder can be rotated about the second axis of rotation in such a way that the center of emission of the HF module can be rotated about the intersection of the axes of rotation.

In a further development of the method, it can be provided that the test piece holder is rotated around the second axis of rotation in such a way that the center of emission of the HF module remains at the intersection of the axes.

This ensures that when the orientation of the HF module is changed by the second axis of rotation, the position of the emission center does not change and is only rotated, and precise measurement of the HF module is possible.

In a development of the test device, it can be provided that the at least one reference device has at least one radar target for an RF module to be tested.

Furthermore, it can be provided that the test device has a low-reflection absorber chamber and the test piece holder is arranged in the low-reflection absorber chamber.

The test position is preferably arranged inside the absorber chamber and the removal position is preferably arranged outside of the absorber chamber.

This creates a test device that is as low-reflection as possible, in which unnecessary reflections are prevented. This further improves a high-precision measurement of the HF module.

• Erneutes Drehen der Prüflingsaufnahme durch den ersten Drehantrieb um die erste Drehachse und Vermessen des HF-Moduls, insbesondere in Bezug auf Azimut-Charakteristik; und/oder Erneutes Drehen der Prüflingsaufnahme durch den zweiten Drehantrieb um die zweite Drehachse, vorzugsweise um 90° und erneutes Drehen der Prüflingsausnahme um die erste Achse zum Vermessen des HF-Moduls, insbesondere in Bezug auf Elevations-Charakteristik.

In a further development of the method, it can be provided that the method also has the following step(s) after rotating the test piece holder by the first rotary drive and/or after rotating the test piece holder by the second rotary drive:

• Re-rotation of the test item holder by the first rotary drive about the first axis of rotation and measurement of the HF module, in particular with regard to azimuth characteristics; and/or Rotating the test piece receptacle again by the second rotary drive about the second axis of rotation, preferably by 90° and rotating the test piece receptacle again about the first axis to measure the HF module, in particular with regard to elevation characteristics.

This means that a further measurement can be carried out. This can be used to measure the HF module again in relation to a different parameter or a different rotational position. Furthermore, this can be used to verify a first measurement result.

Further details and advantages of the invention result from the following exemplary embodiment explained with reference to figures.

• 1 eine schematische Seitenansicht in Schnittdarstellung einer erfindungsgemäßen Testvorrichtung mit einer erfindungsgemäßen Positionereinheit,
• 2 eine schematische Frontansicht in Schnittdarstellung der erfindungsgemäßen Testvorrichtung aus 1,
• 3 eine schematische Darstellung der erfindungsgemäßen Testvorrichtung in einer Prüfposition, und
• 4 eine schematische Darstellung der erfindungsgemäßen Testvorrichtung in einer Entnahmeposition.

Show it:

• 1 a schematic side view in section of a test device according to the invention with a positioner unit according to the invention,
• 2 a schematic front view in section of the test device according to the invention 1 ,
• 3 a schematic representation of the test device according to the invention in a test position, and
• 4 a schematic representation of the test device according to the invention in a removal position.

1 shows a schematic side view in section of a test device 1 according to the invention with a positioner unit 10 according to the invention.

The test device 1 is designed for testing HF modules 2 and comprises at least one positioning unit 10 and at least one reference device 30 (not shown in FIG 1 ).

The positioning unit 10 is designed to accommodate and position at least one HF module 2 in the test device 1 .

2 shows a schematic front view in section of the test device 1 according to the invention 1 .

The positioning unit 10 comprises a test piece holder 12 for holding at least one HF module 2 and a movement unit 20 for moving the test piece holder 12.

Both the positioning unit 10 and the movement unit 20 are arranged inside the test device 1 .

The movement unit 20 comprises a first rotary drive 24 with a first rotary axis A ₁ and a second rotary drive 26 (not shown in FIG 2 ) with a second axis of rotation A ₂ .

The first rotary drive 24 and the second rotary drive 26 are arranged relative to one another in such a way that the first axis of rotation A ₁ and the second axis of rotation A ₂ have an intersection S.

The first axis of rotation A ₁ and the second axis of rotation A ₂ are shown in the figures as dot-dash lines.

The test item holder 12 is arranged in such a way that an HF module 2 can be placed on the test item holder 12 at the point of intersection S of the axes of rotation A ₁ , A ₂ .

Furthermore, the test item holder 12 is designed in such a way that a radiation center Z of the HF module 2 can be placed at the intersection point S of the first and second axes of rotation A ₁ , A ₂ .

The test specimen receptacle 12 is also designed to actuate the HF module 2 electrically.

The positioning unit 10 has a linear drive 22 (cf. 1 ), which is designed to move the sample holder 12 linearly in the direction of the first axis of rotation A ₁ .

The test item receptacle 12 can be rotated about the first axis of rotation A ₁ by the first rotary drive 24 .

The test item holder 12 can be rotated about the first axis of rotation A ₁ in such a way that the emission center Z of the HF module 2 can be rotated about the intersection point S of the axes A ₁ , A ₂ .

Furthermore, the test item receptacle 12 can be rotated about the second axis of rotation A ₂ by the second rotary drive 26 .

The test piece holder 12 can be rotated about the second axis of rotation A ₂ in such a way that the emission center Z of the HF module 2 can be rotated about the intersection point S of the axes A ₁ , A ₂ .

How from the 2 As can be seen, the test piece receptacle 12 and the second rotary drive 26 are connected to a shaft of the first rotary drive 24 via a carrier element 28 . The carrier element 28 can be designed as an L-beam.

The carrier element 28 is connected to the shaft W of the first rotary drive 24 in such a way that the sample receptacle 12 can be rotated by the first rotary drive 24 .

The shaft W of the first rotary drive 24 is supported at least by a first bearing and a second bearing.

The first axis of rotation A ₁ of the first rotary drive 24 is preferably arranged horizontally.

The second axis of rotation A2 of the second rotary drive 26 is preferably arranged vertically.

3 shows a schematic representation of the test device according to the invention with the positioning unit 10 in the test position P ₁ .

4 shows a schematic representation of the test device according to the invention of the positioning unit 10 in the removal position P ₂ .

• Zunächst erfolgt ein Bereitstellen der Testvorrichtung 1 mit der Positioniereinheit 10 zur Aufnahme und Positionierung von zumindest einem HF-Modul 2.

With the test device according to the invention, a method for testing a HF-Mo duls 2, whereby the procedure is divided into the following steps:

• First, the test device 1 is provided with the positioning unit 10 for receiving and positioning at least one RF module 2.

As already explained above, the positioning unit 10 has a test specimen receptacle 12 for receiving at least one HF module 2 and a movement unit 20 for moving the test specimen receptacle 12 . The movement unit 20 has the first rotary drive 24 with the first axis of rotation A ₁ and the second rotary drive 26 with the second axis of rotation A ₂ .

The HF module 2 is then placed in the test object holder 12.

The HF module 2 is then tested by the test device 1.

The step of placing the HF module 2 provides for the HF module 2 to be arranged on the test specimen receptacle 12 at the point of intersection S of the first axis of rotation A ₁ and the second axis of rotation A ₂ .

The emission center Z of the HF module is placed 2 at the point of intersection S of the first and second axes of rotation A ₁ , A ₂ .

The HF module 2 is electrically connected to the test item receptacle 12 and is electrically actuated by the test device 1 .

After the step of placing the HF module 2 on the test object holder, the sample holder 12 is linearly displaced in the direction of the first axis of rotation A _{1 in} order to transfer the HF module 2 to a test position P ₁ .

After the step of testing the HF module 2, the sample holder 12 is linearly displaced again in the direction of the first axis of rotation A ₁ in order to transfer the HF module 2 to a removal position P ₂ .

The step of testing the HF module 2 has the following sub-step: Rotating the test item holder 12 by the first rotary drive 24 about the first axis of rotation A ₁ and measuring the HF module 2, in particular with regard to an azimuth characteristic of the HF module 2.

During the rotation step, the test specimen receptacle 12 is rotated about the first axis of rotation A ₁ by the first rotary drive 24 in such a way that the emission center Z of the HF module 2 remains at the point of intersection S of the axes A ₁ , A ₂ .

Furthermore, the step of testing the HF module 2 has the following sub-step: Rotating the test item holder 12 by the second rotary drive 26 about the second rotary axis A ₂ , preferably by 90°, and measuring the HF module 2 with respect to different rotary positions of the first rotary drive 24, in particular with regard to an elevation characteristic of the HF module 2.

During the rotation step, the test piece receptacle 12 is rotated about the second axis of rotation A ₂ by the second rotary drive 26 in such a way that the center of emission Z of the HF module 2 remains at the point of intersection S of the axes A ₁ , A ₂ .

• Erneutes Drehen der Prüflingsaufnahme 12 durch den ersten Drehantrieb 24 um die erste Drehachse A₁ und Vermessen des HF-Moduls 2, , insbesondere in Bezug auf eine Azimut-Charakteristik des HF-Moduls; und/oder Erneutes Drehen der Prüflingsaufnahme 12 durch den zweiten Drehantrieb 26 um die zweite Drehachse A₂ vorzugsweise um 90°, und
• Vermessen des HF-Moduls in Bezug auf unterschiedliche Drehpositionen des ersten Drehantriebs, insbesondere in Bezug auf eine Elevations-Charakteristik.

The method can also have the following step(s) after rotating the test specimen receptacle 12 by the first rotary drive and/or by the second rotary drive 26:

• Re-rotation of the test piece receptacle 12 by the first rotary drive 24 about the first axis of rotation A ₁ and measurement of the HF module 2, , in particular with regard to an azimuth characteristic of the HF module; and/or Rotating the test piece receptacle 12 again by the second rotary drive 26 about the second axis of rotation A ₂ , preferably by 90°, and
• Measurement of the HF module in relation to different rotational positions of the first rotary drive, in particular in relation to an elevation characteristic.

How out 3 and 4 as can be seen, at least one reference device 30 is arranged on a ceiling component of the test device 1 .

The at least one reference device 30 has at least one radar target 30' for an RF module 2 to be tested.

The test device has an anechoic absorber chamber 40 and the test piece receptacle 12 is arranged in the anechoic absorber chamber 40 . The reference device 30 is also arranged in the absorber chamber 40 .

In particular, the positioning unit 10 is at least partially arranged in the absorber chamber 40 .

If the test object holder 12 and/or the test object holder 12 with the HF module 2 is in the test position P ₁ , then these are/are arranged inside the absorber chamber 40 .

If the test specimen receptacle 12 and/or the test specimen receptacle 12 with the HF is in the removal position P ₂ , then these are/are arranged inside the absorber chamber 40 .

Reference List

1

test fixture

2

HF module

4

loading device

10

positioning unit

12

test item recording

20

movement unit

22

linear actuator

24

first rotary drive

26

second rotary drive

28

carrier element

30

reference device

30'

radar target

40

anechoic chamber

A1

first axis of rotation

A2

second axis of rotation

P1

test position

p2

picking position

S

Intersection of the first and second axis of rotation

W

wave

Z

radiation center

Claims (23)

Positioning unit (10) for receiving and positioning at least one HF module (2) in a test device (1), comprising: a test object holder (12) for accommodating at least one HF module (2), and a movement unit (20) for Movement of the specimen receptacle (12), comprising a first rotary drive (24) with a first axis of rotation (A ₁ ) and a second rotary drive (26) with a second axis of rotation (A ₂ ), the first rotary drive (24), the second rotary drive ( 26) are arranged relative to one another in such a way that the first axis of rotation (A ₁ ) and the second axis of rotation (A ₂ ) have an intersection point (S). Positioning unit (10) after claim 1 , characterized in that the test item holder (12) is arranged such that an HF module (2) on the test item holder (12) at the intersection (S) of the axes of rotation (A ₁ , A ₂ ) can be placed. Positioning unit (10) after claim 1 or 2 , characterized in that the test specimen receptacle (12) is designed in such a way that a radiation center (Z) of the HF module (2) can be placed at the intersection (S) of the first and second axes of rotation (A ₁ , A ₂ ). Positioning unit (10) after claim 1 until 3 , characterized in that the test item holder (12) has an electrical interface and the test item holder (12) is designed to provide the data recorded by a receiving antenna of the HF module (2) via the electrical interface for further processing and/or evaluation. Positioning unit (10) according to one of Claims 1 until 4 , characterized in that the positioning unit (10) has a linear drive (22) which is designed to move the sample holder (12) linearly in the direction of the first axis of rotation (A ₁ ). Positioning unit (10) according to one of Claims 1 until 5 , characterized in that the test item holder (12) by the first rotary drive (24) about the first axis of rotation (A ₁ ) is rotatable. Positioning unit (10) according to one of claim 6 , characterized in that the test specimen holder (12) can be rotated about the first axis of rotation (A ₁ ) in such a way that the emission center (Z) of the HF module (2) about the intersection (S) of the axes (A ₁ , A ₂ ) is rotatable. Positioning unit (10) according to one of Claims 1 until 7 , characterized in that the test object holder (12) can be rotated about the second axis of rotation (A ₂ ) by the second rotary drive (26). Positioning unit (10) after claim 8 , characterized in that the test object holder (12) can be rotated about the second axis of rotation (A ₂ ) in such a way that the center of radiation (Z) of the HF module (2) about the point of intersection (S) of the axes (A ₁ , A ₂ ) is rotatable. Test device (1) for testing RF modules (2), comprising at least one positioning unit (10) according to one of Claims 1 until 9 and at least one reference device (30). Test device (1) after claim 10 , characterized in that the at least one reference device (30) has at least one radar target (30') for a HF module (2) to be tested. Test device (1) for testing HF modules (2), characterized in that the test device is an anechoic absorber chamber (40) and the test object holder (12) is arranged in the anechoic absorber chamber (40). Method for testing an RF module (2) using a test device (1), in particular a test device according to one of Claims 10 until 12 , comprising the following steps: providing a test device (1) with a positioning unit (10) for accommodating and positioning at least one HF module (2), comprising: a test object holder (12) for accommodating at least one HF module (2) , and a movement unit (20) for moving the specimen receptacle (12), comprising a first rotary drive (24) with a first axis of rotation (A ₁ ) and a second rotary drive (26) with a second axis of rotation (A ₂ ); Placing the HF module (2) in the test item receptacle (12); Testing the RF module (2). procedure after Claim 13 , characterized in that the step of placing the HF module (2) provides that the HF module (2) on the test specimen receptacle (12) in a point of intersection (S) of the first axis of rotation (A ₁ ) and the second axis of rotation ( A ₂ ) is arranged. procedure after Claim 14 , characterized in that a radiation center (Z) of the RF module (2) at the intersection (S) of the first and second axis of rotation (A ₁ , A ₂ ) is placed. procedure after claim 12 or 13 , characterized in that the test item holder (12) has an electrical interface and the test item holder (12) provides the data recorded by a receiving antenna of the HF module (2) via the electrical interface for further processing and/or evaluation. Procedure according to one of Claims 12 until 16 , characterized in that it also has the following step, in particular after the step of placing the HF module (2): Linear displacement of the sample holder (12) in the direction of the first axis of rotation (A ₁ ) to the HF module (2) to convert to a test position (P ₁ ). Procedure according to one of Claims 12 until 17 , characterized in that it also has the following step, in particular after the step of testing the HF module (2): Linear displacement of the sample holder (12) in the direction of the first axis of rotation (A ₁ ) to the HF module (2) to convert to a removal position (P ₂ ). Procedure according to one of Claims 12 until 18 , characterized in that it also has the following step, in particular the step of testing the HF module (2), the following sub-step: Rotating the test specimen receptacle (12) by the first rotary drive (24) about the first axis of rotation (A ₁ ) and measuring the RF module (2), in particular with regard to an azimuth characteristic of the RF module (2). procedure after claim 19 , characterized in that the test specimen holder (12) is rotated about the first axis of rotation (A ₁ ) in such a way that the center of radiation (Z) of the HF module (2) remains at the point of intersection (S) of the axes (A ₁ , A ₂ ). . Procedure according to one of Claims 12 until 20 , characterized in that it also has the following step, in particular the step of testing the HF module (2), the following sub-step: Rotating the test specimen receptacle (12) by the second rotary drive (26) about the second axis of rotation (A ₂ ), preferably around 90°, and measuring the HF module (2) in relation to different rotational positions of the first rotary drive (24), in particular in relation to an elevation characteristic of the HF module (2). procedure after Claim 21 , characterized in that the test specimen holder (12) is rotated about the second axis of rotation (A ₂ ) in such a way that the center of radiation (Z) of the HF module (2) remains at the point of intersection (S) of the axes (A ₁ , A ₂ ). . procedure after Claim 21 or 22 , characterized in that the method further comprises the following step(s) after the rotation of the test specimen receptacle (12) by the second rotary drive (26): rotating the test specimen receptacle (12) again by the first rotary drive (24) about the first Axis of rotation (A ₁ ) and measurement of the RF module (2), in particular in relation to an azimuth characteristic of the RF module; and/or Rotating the test object holder (12) again by the second rotary drive (26) about the second axis of rotation (A ₂ ), preferably by 90°, and measuring the HF module in relation to different rotary positions of the first rotary drive (24), in particular in relation to an elevation characteristic of the RF module (2).

Images