CN217985083U - 5G millimeter wave terminal OTA testing arrangement - Google Patents
5G millimeter wave terminal OTA testing arrangement Download PDFInfo
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- CN217985083U CN217985083U CN202222052353.9U CN202222052353U CN217985083U CN 217985083 U CN217985083 U CN 217985083U CN 202222052353 U CN202222052353 U CN 202222052353U CN 217985083 U CN217985083 U CN 217985083U
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- millimeter wave
- reverberation chamber
- wave terminal
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Abstract
The utility model provides a 5G millimeter wave terminal OTA testing arrangement, the device includes reverberation room and sets up revolving stage, feed and the plane of reflection corresponding to feed in the reverberation room; the feed source and the reflecting surface are arranged on the side wall of the reverberation chamber; the rotary table is used for placing the 5G millimeter wave terminal and collecting spherical field data of the 5G millimeter wave terminal; the feed source and the reflecting surface are used for forming a testing quiet zone above the rotary table so as to be used for testing the directivity index of the 5G millimeter wave terminal. The utility model discloses a testing arrangement combines together the advantage of reverberation room and anechoic chamber, through setting up plane of reflection and feed in order to form the quasi plane wave above the revolving stage in the reverberation room, realizes 5G millimeter wave terminal OTA each item index test, can carry out the test of omnidirectional power index and also can carry out the test of directivity power index.
Description
Technical Field
The utility model belongs to the technical field of wireless communication 5G terminal test, concretely relates to 5G millimeter wave terminal OTA testing arrangement.
Background
The reverberation chamber is suitable for testing the omnidirectional power index, and is very convenient and fast to test communication equipment such as a base station and a terminal, especially large-size equipment. The test efficiency of the reverberation room is far higher than that of the conventional anechoic room, and the test index is not lower than that of the anechoic room.
The isotropic nature of the reverberation chamber test region dictates that it cannot be used for directivity index testing, for which directivity indexes still need to be performed in anechoic chambers. The utility model discloses combine together reverberation room and anechoic chamber advantage, form accurate plane wave through plane of reflection and feed in the reverberation room, realize 5G millimeter wave terminal OTA each item index test.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least, provide a 5G millimeter wave terminal OTA testing arrangement.
The utility model provides a 5G millimeter wave terminal OTA testing arrangement, the device includes reverberation room and sets up revolving stage, feed and the plane of reflection corresponding to the feed in the reverberation room; wherein the feed source and the reflecting surface are disposed on a sidewall of the reverberation chamber;
the rotary table is used for placing the 5G millimeter wave terminal and collecting spherical field data of the 5G millimeter wave terminal;
the feed source and the reflecting surface are used for forming a testing dead zone above the rotary table so as to test the directivity index of the 5G millimeter wave terminal.
Optionally, the turntable includes a first direction turntable and a second direction turntable disposed on the first direction turntable.
Optionally, a wave absorbing material layer is disposed in a partial region of the inner wall of the reverberation chamber.
Optionally, the apparatus further comprises at least one stirrer disposed within the reverberation chamber.
Optionally, two mixers, namely a first mixer and a second mixer, are arranged in the reverberation chamber;
the first stirrer is arranged in the length direction close to the side wall of the reverberation chamber;
the second agitator is disposed proximate to a top wall of the reverberation chamber.
Optionally, the first stirrer includes a plurality of first hinges, and the plurality of first hinges are sequentially connected along a length direction of the reverberation chamber sidewall to form a Z-shaped structure.
Optionally, the second stirrer includes a plurality of second hinges, and the second hinges are sequentially and rotatably connected to form a fan structure.
Optionally, an edge region of each second hinge is provided in a zigzag shape.
Optionally, the apparatus further comprises a measuring antenna and a baffle, both of which are disposed in the reverberation chamber; wherein, the first and the second end of the pipe are connected with each other,
the baffle is disposed between the measurement antenna and the turntable.
Optionally, the apparatus further includes an interface board disposed on a sidewall of the reverberation chamber.
The utility model discloses a 5G millimeter wave terminal OTA testing arrangement, including reverberation room and set up revolving stage, feed and the plane of reflection corresponding to feed in the reverberation room; the rotary table is used for collecting spherical field data of the 5G millimeter wave terminal; the feed source and the reflecting surface are arranged on the side wall of the reverberation chamber and are used for forming a testing quiet zone above the rotary table so as to test the directivity index of the 5G millimeter wave terminal. The utility model discloses a testing arrangement combines together the advantage of reverberation room and anechoic chamber, through setting up plane of reflection and feed in order to form the quasi plane wave above the revolving stage in the reverberation room, realizes 5G millimeter wave terminal OTA each item index test, can carry out the test of omnidirectional power index and also can carry out the test of directivity power index.
Drawings
Fig. 1 is a schematic structural diagram of a 5G millimeter wave terminal OTA testing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the present invention provides a 5G millimeter wave terminal OTA testing apparatus 100, the apparatus 100 includes a reverberation chamber 110, a turntable 120 disposed in the reverberation chamber 110, a feed 130, and a reflecting surface 140 corresponding to the feed 130.
Wherein the feed 130 and the reflecting surface 140 are disposed on the side walls of the reverberation chamber 110. The present embodiment is not particularly limited to specific positions of the feed source 130 and the reflecting surface 140, as long as the feed source 130 corresponds to the reflecting surface 140. Locating the feed 130 and reflecting surface 140 on the side walls of the reverberation chamber 110 can increase the space available inside the reverberation chamber 110.
The rotary table 120 is used for placing the 5G millimeter wave terminal and collecting spherical field data of the 5G millimeter wave terminal.
A feed 130 and a reflecting surface 140 for forming a test dead zone above the turntable 120 for testing the directivity index of the 5G millimeter wave terminal.
It should be noted that, in this embodiment, the feed source 130 is a cylindrical cone horn feed source, and certainly, a feed source with a gas structure may also be used. The shape of the reflecting surface 140 is not particularly required in this embodiment, as long as the function thereof can be achieved.
Specifically, the feed 130 and the reflecting surface 140 form a compact field, forming a test quiet zone above the turntable 120, i.e., forming a quasi-plane wave illumination above the turntable 120. The turntable 120 completes acquisition of spherical field data of the 5G millimeter wave terminal, and obtains a directivity index of the 5G millimeter wave terminal through calculation, for example, an Equivalent Isotropic Radiated Power (EIRP) of the 5G millimeter wave terminal, and may also obtain other directivity power indexes of the 5G millimeter wave terminal.
The utility model discloses a testing arrangement combines together the advantage of reverberation room and anechoic chamber, through setting up plane of reflection and feed in order to form the quasi plane wave above the revolving stage in the reverberation room, realizes 5G millimeter wave terminal OTA each item index test, can carry out the test of omnidirectional power index and also can carry out the test of directivity power index.
Illustratively, as shown in fig. 1, the turntable 120 includes a first direction turntable 121 and a second direction turntable 122 provided on the first direction turntable 121.
In the present embodiment, the first-direction turn table 121 and the second-direction turn table 122 together constitute a two-dimensional turn table. Specifically, the first direction turntable 121 is a turntable azimuth axis, and the second direction turntable 122 is a turntable polarization axis. Through the linkage of the azimuth axis and the polarization axis, the spherical data acquisition of the 5G millimeter wave terminal can be realized.
Illustratively, a partial region of the inner wall of the reverberation chamber 110 is provided with a layer of wave-absorbing material (not shown in the figures). Specifically, a wave-absorbing material layer needs to be adhered to part of the inner wall of the reverberation chamber 110 before each index test of the 5G millimeter wave terminal is performed, and the wave-absorbing material layer is convenient to disassemble. By adhering the wave-absorbing material layer to a part of the inner wall of the reverberation chamber 110, the reflected signal of the inner wall of the reverberation chamber 110 can be attenuated, and a test quiet zone is formed above the turntable 120.
Illustratively, as shown in FIG. 1, the apparatus 100 further includes at least one agitator (not shown) disposed within the reverberation chamber 110. In this embodiment, by arranging one or more stirrers in the reverberation chamber 110, the collected electric field data is random as the stirrers stir the reverberation chamber 110, and a large number of uncorrelated samples can be obtained. In this embodiment, the stirrer is driven to rotate by an external motor in a step-by-step or mechanical rotation driving manner, thereby changing the boundary condition of the electromagnetic field.
Illustratively, as shown in fig. 1, two agitators, a first agitator 151 and a second agitator 152, are disposed within the reverberation chamber 110. The first agitator 151 is disposed in the lengthwise direction near the side wall of the reverberation chamber 110. A second agitator 152 is disposed near the top wall of the reverberation chamber 110. The stirring effect is further increased by providing the first stirrer 151 and the second stirrer 152. In the present embodiment, the first stirrer 151 and the second stirrer 152 are both mechanical stirrers.
Illustratively, as shown in fig. 1, the first stirrer 151 includes a plurality of first folding pages 151a, and the plurality of first folding pages 151a are sequentially connected in a Z-shaped configuration along a longitudinal direction of a sidewall of the reverberation chamber 110. That is, the first stirrer 151 is a Z-type vertical stirrer.
Illustratively, as shown in fig. 1, the second stirrer 152 includes a plurality of second hinges 152a, and the plurality of second hinges 152a are rotatably connected in turn in a fan structure. That is, the second agitator 152 is a ceiling fan agitator.
Specifically, in this embodiment, the second stirrer 152 includes 8 second hinges 152a, the 8 second hinges 152a are sequentially connected in a rotating manner to form a fan structure, and the rotating volume of the stirrer having 8 sections of second hinges 152a can sufficiently drive the electromagnetic waves in the surrounding space to change. Each second flap 152a has dimensions of 25cm x 25cm leaves and an angle of 140 degrees open. The second agitator 152 is a ceiling fan agitator, which saves the interior space of the reverberation chamber 110 while increasing the agitation effect.
Further, an edge region of each of the second flaps 152a is provided in a zigzag shape. The edge area of the second flap 152a is provided in a zigzag shape, which can further increase the stirring effect.
Illustratively, as shown in fig. 1, the apparatus 100 further includes a measurement antenna 160 and a baffle 170, both the measurement antenna 160 and the baffle 170 being disposed within the reverberation chamber 110. Wherein a baffle 170 is arranged between the measuring antenna 160 and the turntable 120. In this embodiment, the measuring antenna 160 may be used to receive or transmit signals, forming a radio frequency test link with the 5G millimeter wave terminal. The baffle 170 is a metal baffle, which shields the measuring antenna 160, reduces the irradiation of direct waves to the test area, improves the multipath propagation in the reverberation chamber 110, and makes the electromagnetic field stirring more uniform.
Illustratively, as shown in fig. 1, the apparatus 100 further includes an interface board 180, the interface board 180 being disposed on a sidewall of the reverberation chamber 110. In the present embodiment, the interface plate 180 is a wall-through interface plate. The interface board 180 includes a plurality of interfaces such as USB, LAN, rf coaxial, and dc power supply, and electrically connects the internal devices of the reverberation chamber 110 to the power supply or external related devices (e.g., a computer, a vector network analyzer, etc.) of the reverberation chamber 110 through the interface board 180, so as to supply power to the devices in the reverberation chamber 110 and perform test control.
As shown in fig. 1, the 5G millimeter wave terminal OTA testing apparatus has two working states, which are respectively for the omnidirectional power indicator and the directional power indicator.
In this embodiment, the working principle of the test on the omnidirectional power indicator by the 5G millimeter wave terminal OTA testing apparatus 100 is as follows: by adopting the working principle of the reverberation chamber, the signal transmitted by the measuring antenna 160 is stirred by the first stirrer 151 and the second stirrer 152, and a statistical uniform electromagnetic field environment is formed above the rotary table 120, because the test object is a terminal product, the volume of the reverberation chamber 110 is small, and in order to save space and fully stir, the second stirrer 152 is a ceiling fan stirrer and can fully drive the electromagnetic wave change of the surrounding space. The test device 100 is adopted to test the omnidirectional power index of the 5G millimeter wave terminal, the test is very convenient, meanwhile, the test efficiency of the reverberation chamber 110 is far higher than that of a conventional anechoic chamber, and the test index is not lower than that of the anechoic chamber.
In this embodiment, the operation principle of the test on the directional power index by the 5G millimeter wave terminal OTA testing apparatus 100 is as follows: quasi-plane wave irradiation is formed above the rotary table 120 through the feed source 130 and the reflecting surface 140, a wave absorbing material layer is adhered to part of the inner wall of the reverberation chamber 110, the wave absorbing material layer can attenuate signals reflected by the inner wall of the reverberation chamber 110, and a test quiet zone is formed above the rotary table 120. The two-dimensional rotary table is linked with the two axes of the polarization axis through the azimuth axis to complete the acquisition process of the spherical field data of the 5G millimeter wave terminal, and the directivity indexes such as EIRP and the like are obtained through calculation.
It is to be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A5G millimeter wave terminal OTA testing device is characterized by comprising a reverberation chamber, a rotary table arranged in the reverberation chamber, a feed source and a reflecting surface corresponding to the feed source; wherein the feed source and the reflecting surface are disposed on a sidewall of the reverberation chamber;
the rotary table is used for placing the 5G millimeter wave terminal and collecting spherical field data of the 5G millimeter wave terminal;
and the feed source and the reflecting surface are used for forming a testing dead zone above the rotary table so as to test the directivity index of the 5G millimeter wave terminal.
2. The apparatus of claim 1, wherein the turntable comprises a first direction turntable and a second direction turntable disposed on the first direction turntable.
3. The apparatus of claim 1, wherein a partial region of the inner wall of the reverberation chamber is provided with a layer of wave-absorbing material.
4. The apparatus of any one of claims 1 to 3, further comprising at least one agitator disposed within the reverberation chamber.
5. The apparatus of claim 4, wherein two agitators, a first agitator and a second agitator, are provided within the reverberation chamber;
the first stirrer is arranged in the length direction close to the side wall of the reverberation chamber;
the second agitator is disposed proximate to a top wall of the reverberation chamber.
6. The apparatus of claim 5, wherein the first stirrer comprises a plurality of first hinges, and the plurality of first hinges are sequentially connected in a Z-shaped structure along a length direction of the reverberation chamber side wall.
7. The apparatus of claim 5, wherein the second agitator comprises a plurality of second hinges rotatably connected in series in a fan configuration.
8. The apparatus of claim 7 wherein an edge region of each of the second hinges is provided in a zig-zag configuration.
9. The apparatus of any of claims 1 to 3, further comprising a measurement antenna and a baffle, both disposed within said reverberation chamber; wherein the content of the first and second substances,
the baffle is disposed between the measurement antenna and the turntable.
10. The apparatus of any of claims 1 to 3, further comprising an interface board disposed on a side wall of the reverberation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222052353.9U CN217985083U (en) | 2022-08-05 | 2022-08-05 | 5G millimeter wave terminal OTA testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222052353.9U CN217985083U (en) | 2022-08-05 | 2022-08-05 | 5G millimeter wave terminal OTA testing arrangement |
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| Publication Number | Publication Date |
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| CN217985083U true CN217985083U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222052353.9U Active CN217985083U (en) | 2022-08-05 | 2022-08-05 | 5G millimeter wave terminal OTA testing arrangement |
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| CN (1) | CN217985083U (en) |
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- 2022-08-05 CN CN202222052353.9U patent/CN217985083U/en active Active
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