CN112327062B

CN112327062B - Multi-flow UE test shielding box

Info

Publication number: CN112327062B
Application number: CN202011120202.1A
Authority: CN
Inventors: 马长春; 徐述武
Original assignee: Hangzhou Yongxie Technology Co ltd
Current assignee: Hangzhou Yongxie Technology Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2023-07-14
Anticipated expiration: 2040-10-19
Also published as: CN112327062A

Abstract

The utility model provides a multithread UE test shielding case, includes the box and supports the slip wheelset that the box removed, articulates on the side of box has the shield door that is used for closing or opens, its characterized in that: the box body comprises a mobile antenna group and a bearing tray, wherein the mobile antenna group is arranged on the inner top surface of the box body, the mobile antenna group comprises a transverse sliding rail, a longitudinal sliding rail and antenna heads, the transverse sliding rail and the longitudinal sliding rail are mutually crossed and horizontally arranged on the inner top surface of the box body, two groups of antenna heads are connected to the transverse sliding rail and the longitudinal sliding rail in a sliding manner, the caliber of each group of antenna heads is 100-105 mm, the bearing tray is used for bearing a plurality of groups of equipment to be tested, the bearing tray is connected to the inner bottom surface of the box body right below the mobile antenna group through a supporting frame, and a radio frequency interface panel and a filtering interface panel are further arranged on one side surface of the box body; the invention has the advantages that the test of the multi-stream multi-terminal multi-band mobile phone can be simultaneously carried out, and the device to be tested placed on the bearing tray can realize the uniform receiving and transmitting of multi-stream signals.

Description

Multi-flow UE test shielding box

Technical Field

The invention relates to the technical field of signal transmission detection equipment, in particular to a multi-stream UE test shielding box.

Background

The multi-stream in the multi-stream UE refers to a plurality of data streams, the UE refers to terminal equipment such as a mobile phone, a router and the like, the multi-stream in the multi-stream UE is up to 8-stream signals, along with the progress of the information age, the detection of the equipment to the function is very important, the signal uniformity of the existing test shielding box is poor, the test of the multi-stream multi-terminal multi-frequency band mobile phone cannot be simultaneously carried out, the signal difference of the frequency band of the multi-stream multi-terminal multi-frequency band mobile phone is large and unstable, the beam coverage angle of the antenna signal transmission is small, so that the equipment to be tested placed on a bearing tray cannot realize the uniform receiving and transmitting of the multi-stream signals, the test has larger influence on the test, and the equipment to be tested in the invention is mainly aimed at the mobile phone.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a shielding box capable of realizing simultaneous multi-stream multi-terminal multi-frequency-band test.

The invention solves the technical problems by adopting the following technical scheme:

the utility model provides a multithread UE test shielding case, includes the box and supports the slip wheelset that the box removed, be equipped with the opening on the side of box, it has the shielding door that is used for closing or opening to articulate on the opening, shielding door lateral surface is equipped with the connecting rod lock, including moving antenna group and bearing tray in the box, it sets up the top surface in the box to move antenna group, it includes horizontal slide rail, vertical slide rail and antenna head to move antenna group, horizontal slide rail with the horizontal setting of vertical slide rail cross each other is on the interior top surface of box, horizontal slide rail is last to have two sets of antenna heads with equal sliding connection on the vertical slide rail, and each group the bore of antenna head is between 100mm-105mm, bearing tray is used for bearing multiunit equipment to be tested, bearing tray's diameter is 500mm, bearing tray passes through the support frame to be connected on the box bottom surface of moving antenna group under, still be equipped with radio frequency interface panel and filter interface panel on the side of box, radio frequency interface panel with antenna head between the antenna head cross each other horizontal slide rail level setting is on the interior top surface of box, two sets of antenna head and antenna head cross each other, and antenna head cross each antenna head between the two sets of antenna head are the vertical distance between two sets of antenna head and the vertical slide rail is between the antenna head is between 100.7 mm-105mm, and the antenna head is 3.7mm, and the distance between antenna head and the antenna head is the vertical end is 3mm between the antenna head to the antenna head is perpendicular to the antenna head.

Preferably, the bearing tray comprises a bearing table, the bearing table is in a decagon shape, each edge of the bearing table is provided with a bending plate which is inclined upwards and outwards, the bearing table on the inner side of the bending plate is also provided with a placing groove with an opening facing the bending plate, and the placing groove is used for placing equipment to be tested.

Preferably, the antenna head comprises a sliding part and a dual-polarized antenna, wherein the bottom of the sliding part is provided with a circular ring, the bottom of the circular ring is provided with a vertical connecting sheet, and the dual-polarized antenna is attached to one side of the connecting sheet.

Preferably, the dual-polarized antenna comprises two first antenna sheets and two second antenna sheets which are arranged in a crisscross manner, and grooves are arranged on the first antenna sheets and the second antenna sheets side by side.

Preferably, a vertical slot is formed in the middle of the second antenna sheet, and hook grooves are formed in the first antenna sheet and the second antenna sheet.

Preferably, a layer of spike layer with sharp angle facing the inside of the box is arranged on the inner wall of the box body, and the spike layer is made of pyramid wave absorbing material.

Preferably, through holes are formed in the bottom bearing table in the placing groove, a data connection plugboard is arranged on the inner bottom surface of the box body, USB interfaces with the same number as the placing groove are arranged on the data connection plugboard, and data transmission lines which penetrate through the corresponding through holes and are connected with equipment to be tested are arranged on the USB interfaces.

Preferably, the bending plate is uniformly provided with a plurality of heat dissipation holes, and the center of the bearing table is provided with a plurality of round holes.

Preferably, an air inlet and an air outlet are further formed in one side face of the box body, ventilation waveguide windows are formed in the outer side of the air inlet and the outer side of the air outlet, and fans are arranged in the inner side of the air inlet and the inner side of the air outlet.

Preferably, the included angle between the bending plate and the bearing table is between 90 degrees and 135 degrees.

The invention has the advantages and positive effects that: the top surface is equipped with 4 dual polarized antenna of slidable in the box, can cover 2G/3G/4G/Sub-6G cell-phone frequency channel signal completely to according to the size of cell-phone tray, design suitable wave beam coverage angle, make the cell-phone of putting on the cell-phone tray can realize the even transceiver of multiflow signal, can manual regulation dual polarized antenna's position, solved the difference of different terminals at signal transceiver.

Drawings

FIG. 1 is an overall block diagram of the present invention;

fig. 2 is a front view of the present invention with the shield door opened;

FIG. 3 is an internal block diagram of the present invention;

FIG. 4 is a simulation diagram of the test effect of the antenna and the mobile phone according to the present invention;

fig. 5 is a block diagram of a mobile antenna assembly in accordance with the present invention;

fig. 6 is a structural view of the carrying tray in the present invention.

FIG. 7 is a side view of the positional relationship between the antenna head on the transverse rail and the carrying tray of the present invention;

FIG. 8 is a front view of the positional relationship between the antenna head on the transverse rail and the carrying tray in the present invention;

fig. 9 is a block diagram of a first antenna patch in the present invention;

fig. 10 is a structural view of a second antenna patch in the present invention.

In the figure: 1. a case; 2. a sliding wheel set; 3. a shielding door; 4. a link lock; 5. a mobile antenna group; 51. a transverse slide rail; 52. a longitudinal slide rail; 53. an antenna head; 531. a slider; 532. a dual polarized antenna; 5321. a first antenna patch; 5321. a second antenna patch; 5323. a groove; 5324. a slot; 5325. a hooking groove; 533. a circular ring; 6. a carrying tray; 61. a carrying platform; 611. a round hole; 62. a bending plate; 621. a heat radiation hole; 63. a placement groove; 7. a support frame; 8. a radio frequency interface panel; 9. a filter interface panel; 10. a connecting sheet; 11. a stab layer; 12. a data connection plugboard; 13. an air inlet hole; 14. an air outlet; 15. a ventilation waveguide window; 16. a fan.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Embodiments of the invention are described in further detail below with reference to the attached drawing figures:

the invention designs the multi-flow UE test shielding box, which has the specific structure shown in figures 1-8, comprises a box body 1 and a sliding wheel set 2 (4 universal wheels of 3 inches for enabling the shielding box to slide on the ground, and is convenient for transposition carrying), an opening is arranged on one side surface of the box body 1, a shielding door 3 for closing or opening is hinged on the opening, the shielding door 3 is connected on the shielding box body 1 through a special stainless steel hinge, the shielding door 3 is provided with a connecting rod lock 4 on the outer side surface, the box 1 is internally provided with a movable antenna group 5 and a bearing tray 6, the movable antenna group 5 is arranged on the inner top surface of the box 1, the movable antenna group 5 comprises a transverse sliding rail 51, a longitudinal sliding rail 52 and an antenna head 53, the transverse sliding rail 51 and the longitudinal sliding rail 52 are horizontally arranged on the inner top surface of the box 1 in a crossed manner, two groups of antenna heads 53 are slidably connected on the transverse sliding rail 51 and the longitudinal sliding rail, the caliber of each group of antenna heads 53 is 100mm-105mm, the antenna heads 53 adopt 101.7mm as experimental data, (the antenna heads 53 in the invention comprise a sliding piece 531 and a dual polarized antenna 532, the dual polarized antenna 532 is a novel antenna technology, and combines two mutually orthogonal antennas with +45 DEG and-45 DEG polarization directions and simultaneously works in a transceiving duplex mode, the most outstanding advantages of the device are that the number of antennas of a single directional base station is saved, a circular ring 533 is arranged at the bottom of a sliding piece 531, the top of the circular ring 533 is connected in a sliding rail through a sliding strip, a radio frequency interface panel 8 and a filtering interface panel 9 are further arranged on one side of the box 1, a line between the radio frequency interface panel 8 and an antenna head 53 is connected through a bolt to fix the angle of the circular ring 533, a vertical connecting piece 10 is arranged at the bottom of the circular ring 533, a dual-polarized antenna 532 is attached to one side of the connecting piece 10, the connecting piece 10 mainly enables the connection of the dual-polarized antenna 532 to be more stable), a bearing tray 6 is used for bearing a plurality of groups of devices (mobile phones) to be tested, the diameter of the bearing tray 6 is 500mm (as shown in fig. 7 or 8, L is the radius of the bearing tray 6 is 250 mm), the bearing tray 6 is connected to the inner bottom surface of the box 1 under the moving antenna group 5 through a supporting frame 7, a radio frequency interface panel 8 and a radio frequency interface panel 9 are further arranged on one side of the box 1, the radio frequency interface panel 8 is electrically connected with the antenna 532, the outer end of the radio frequency interface panel is electrically connected with the external signal base station, and the external signal base station of the radio frequency interface is transmitted to the antenna 532, and the inside the shielding box is mainly provided with a specific frequency point for filtering frequency or frequency point of the frequency filtering frequency point; when two groups of antenna heads 53 on the transverse sliding rail 51 and two groups of antenna heads 53 on the longitudinal sliding rail 52 slide to the intersection point of the transverse sliding rail 51 and the longitudinal sliding rail 52, the distance between the two groups of antenna heads 53 on the transverse sliding rail 51 and the distance between the two groups of antenna heads 53 on the longitudinal sliding rail 52 are 100mm (as shown in fig. 8, X is 100 mm), the distance between the top end of a mobile phone on the carrying tray 6 and each group of antenna heads 53 above is 570mm-640mm (as shown in fig. 7 or 8), the distance refers to H), the frequencies emitted by each group of antenna heads 53 are between 0.7GHz and 6GHz, the far-field distance of the antenna is between 48.3mm and 413.7mm (the antenna heads 53 are devices for electromagnetic wave emission, and can be emitted after a certain condition is met), the antenna pattern is stable, the antenna distance refers to the far-field distance which can generate specific radiation after the antenna emission is stable, the influence on the inside and is minimum during testing in the interval, as shown in fig. 7-8, the distance between the two antenna heads 53 are overlapped at the two ends of the two antenna heads 5 degrees (as shown in fig. 7-8, the two antenna heads are 5-53 are covered at the left and the two ends of the two antenna heads and the two antenna heads are 5 degrees and the two antenna heads are covered at the same angle of 45 DEG in the left and the two antenna heads are 45 DEG and the two end-5 degrees are respectively, and the two antenna heads are covered at the two end-5 degrees and the two antenna heads are in the two end-5 degrees and the two antenna head is in the two end-far-field line plane.

The following table is the experimental test data:

as shown in the table, the antenna size in the invention is 101.7mm, the distance between the antenna head 53 and the mobile phone is two, one is 570mm which is the nearest distance between the mobile phone and the antenna, the other is 640mm which is the farthest distance between the mobile phone and the antenna, the first case is that the vertical distance between the antenna head 53 and the mobile phone is 570mm, the frequency emitted by the antenna head 53 is 0.7GHz, and the measured space loss value is about 24.5dB when the far-field distance of the antenna is 48.3 mm; when the frequency emitted by the antenna head 53 is 1.7GHz and the far-field distance of the antenna is 117.2mm, the measured space loss value is about 32.2dB; the measured spatial loss value was about 36.2dB when the antenna far-field distance was 186.2mm, about 37.9dB when the antenna far-field distance was 227.5mm, about 39.2dB when the antenna far-field distance was 262.0mm, about 4.9GHz when the antenna far-field distance was 337.9mm, about 41.4dB when the antenna far-field distance was 6GHz and about 413.7 mm; the second case is that the vertical distance between the antenna head 53 and the mobile phone is 640mm, the frequency emitted by the antenna head 53 is 0.7GHz, and when the far-field distance of the antenna is 48.3mm, the measured space loss value is about 25.5dB; when the frequency emitted by the antenna head 53 is 1.7GHz and the far-field distance of the antenna is 117.2mm, the measured space loss value is about 33.2dB; the measured spatial loss value was about 37.2dB when the antenna far-field distance was 186.2mm, about 38.9dB when the antenna far-field distance was 227.5mm, about 40.2dB when the antenna far-field distance was 262.0mm, about 4.9GHz when the antenna far-field distance was 337.9mm, about 42.4dB when the antenna far-field distance was 6GHz and about 413.7 mm; the above is an explanation of table data, and because the distance between the antenna head 53 and the mobile phone is between 570mm and 640mm, in this range, the same antenna size, the same frequency and the same antenna far field distance, the difference of space loss values due to two vertical differences is about 1dB, and considering that the signals have 3dB differences in the coverage area of the antenna beams, the signal differences are expected to be about 4dB, so that the signal differences from different antennas to different mobile phones are also within 4dB in the whole box, and the signal multi-stream uplink and downlink communication can be well established.

As shown in fig. 3 and 5, the top surface in the case 1 is provided with 4 dual polarized antennas 532 capable of sliding, which can completely cover the frequency band signals of the 2G/3G/4G/Sub-6G mobile phone, and design a proper beam coverage angle according to the size of the bearing tray 6, so that the mobile phone placed on the bearing tray 6 can realize uniform receiving and transmitting of multi-stream signals, and the positions of the dual polarized antennas 532 can be manually adjusted, thereby solving the difference of different terminals in signal receiving and transmitting.

As shown in fig. 6, the carrying tray 6 includes a carrying table 61, the carrying table 61 is in a decagon shape, the placing positions of mobile phones are guaranteed to be the same in space by using the symmetry design principle, each side of the carrying table 61 is provided with a bending plate 62 which is inclined upwards and outwards, the included angle between the bending plate 62 and the carrying table 61 is between 90 ° and 135 °, the range of the angle is obtained by multiple tests, if the angle between the bending plate 62 and the carrying table 61 is smaller than 90 °, the mobile phone is inclined towards the center of the carrying table 61 and has an influence on the test, if the angle between the bending plate 62 and the carrying table 61 is larger than 135 °, the angle of the mobile phone is too large towards the outer side of the carrying table 61, the range of beam coverage is too large and has a certain deviation, namely has a certain influence on the test, the carrying table 61 on the inner side of the bending plate 62 is also provided with a placing groove 63 which is opened towards the bending plate 62, the placing tray 63 is used for placing a device to be tested, the carrying tray 6 can be placed with 10 mobile phones conveniently, the tray adopts a nonmetallic material with low dielectric constant, so that the influence on the space signal is small, and the test performance is enhanced; the shielding box in the invention can realize the polygon of the bearing table 61 according to the number of the test mobile phones, and the antenna can be configured with other antennas.

As shown in fig. 9, the dual polarized antenna 532 includes two first antenna plates 5321 and second antenna plates 5322 disposed in a crisscross arrangement, and grooves 5323 are disposed on the first antenna plates 5321 and the second antenna plates 5322 side by side; the middle of the second antenna piece 5322 is provided with a vertical slot 5324, the first antenna piece 5321 and the second antenna piece 5322 are provided with a hook slot 5325 (the middle of the first antenna piece 5321 is aligned with the slot of the second antenna piece 5322 and is inserted downwards, and then the hook leg 5325 on the first antenna piece 5321 is hooked with the hook leg 5325 on the second antenna piece 5322, so that the first antenna piece 5321 and the second antenna piece 5322 can be connected together), the first antenna piece 5321 and the second antenna piece 5322 are provided with a row of grooves 5322 which are symmetrical left and right, and 7 grooves 5322, because of the need to consider the signal coverage of 0.7-6GHz, if the antenna is designed according to a conventional Vivaldi antenna (the antenna adopts a cross design, the conventional Vivaldi antenna is a non-periodic, gradual-change and end-fire antenna, and is a broadband antenna), the antenna size can be quite large, and the antenna is not satisfied for using a traveling wave in a limited space. In order to solve the problem, the groove is skillfully added on the basis of the conventional vivaldi antenna, so that a current path of the antenna flowing on the antenna is longer, the antenna can work in a low frequency band, the antenna can expand to the low frequency band under the condition of unchanged size, and finally the antenna can work in a 0.7-6GHz frequency band.

As shown in fig. 2, a layer of spike layer 11 with sharp angle facing the inside of the box is arranged on the inner wall of the box body 1, the spike layer 11 is made of pyramid wave absorbing material, and the wave absorbing pyramid material can resist electromagnetic interference and electromagnetic wave radiation in all directions.

As shown in fig. 6, a through hole (not indicated in the present invention) is formed in the bottom bearing table 61 in the placement groove 63, a data connection plugboard 12 is provided on the inner bottom surface of the case 1, USB interfaces with the same number as the placement groove 63 are provided on the data connection plugboard 12, and data transmission lines connected with the device to be tested through the corresponding through holes are provided on the USB interfaces, because the external base station transmits signals to the inside of the case 1 through the dual polarized antenna 532, then receives the signals through 10 mobile phones, and then needs to transmit the signals to the external control terminal through the data lines to test the data.

Since a lot of heat can be generated in the testing process of the mobile phone equipment, a plurality of heat dissipation holes 621 are uniformly distributed on the bending plate 62, a plurality of round holes 611 are formed in the center of the bearing table 61, air flow of air guide is realized through the heat dissipation holes 621 and the round holes 611, a heat dissipation function is realized, an air inlet hole 13 and an air outlet hole are further formed in one side face of the box body 1, ventilation waveguide windows 15 are formed in the outer sides of the air inlet holes 13 and the outer sides of the air outlet holes (the thickness of the ventilation waveguide windows 15 is thin, the weight is light, the screen effect is high), fans 16 are arranged in the inner sides of the air inlet holes 13 and the inner sides of the air outlets 14, heat dissipation is realized in the box body 1 through the fans 16, and when the mobile phone continuously works, the temperature in the shielding box and the temperature difference outside the box are controlled within 5 ℃.

It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the invention is not limited to the examples described in the detailed description, but rather falls within the scope of the invention as defined by other embodiments derived from the technical solutions of the invention by those skilled in the art.

Claims

1. The utility model provides a multithread UE test shielding case, includes box (1) and supports slip wheelset (2) that box (1) removed, be equipped with the opening on one side of box (1), it has shielding door (3) that are used for closing or opening to articulate on the opening, shielding door (3) lateral surface is equipped with connecting rod lock (4), its characterized in that: the box body (1) comprises a movable antenna group (5) and bearing trays (6), the movable antenna group (5) is arranged on the inner top surface of the box body (1), the movable antenna group (5) comprises a transverse sliding rail (51), a longitudinal sliding rail (52) and antenna heads (53), the transverse sliding rail (51) and the longitudinal sliding rail (52) are horizontally arranged on the inner top surface of the box body (1) in a crisscross manner, two groups of antenna heads (53) are slidably connected on the transverse sliding rail (51) and the longitudinal sliding rail (52), the caliber of each group of antenna heads (53) is 100mm-105mm, the bearing trays (6) are used for bearing a plurality of groups of equipment to be tested, the diameter of each bearing tray (6) is 500mm, each bearing tray (6) is connected on the inner bottom surface of the box body (1) under the movable antenna group (5) through a supporting frame (7), a radio frequency interface panel (8) and a filter interface panel (9) are further arranged on one side surface of the box body (1), when the antenna heads (53) are connected with the corresponding antenna heads (53) in the transverse sliding manner, the distance between two groups of antenna heads (53) on the transverse sliding rail (51) and the distance between two groups of antenna heads (53) on the longitudinal sliding rail (52) are 100mm, the distance between the top end of the equipment to be tested on the bearing tray (6) and each group of antenna heads (53) above is 570mm-640mm, the frequency emitted by each group of antenna heads (53) is 0.7GHz-6GHz, and the far-field distance of the antenna is 48.3mm-413.7 mm.

2. The multi-stream UE test mask box of claim 1, wherein: the bearing tray (6) comprises a bearing table (61), the bearing table (61) is in a decagon shape, each edge of the bearing table (61) is provided with a bending plate (62) which is inclined upwards and outwards, a placing groove (63) with an opening facing the bending plate is further formed in the bearing table (61) on the inner side of the bending plate (62), and the placing groove (63) is used for placing equipment to be tested.

3. The multi-stream UE test mask box of claim 1, wherein: the antenna head (53) comprises a sliding part (531) and a dual-polarized antenna (532), a circular ring (533) is arranged at the bottom of the sliding part (531), a vertical connecting sheet (10) is arranged at the bottom of the circular ring (533), and the dual-polarized antenna (532) is attached to one side of the connecting sheet (10).

4. A multi-stream UE test mask box according to claim 3, wherein: the dual-polarized antenna (532) comprises a first antenna sheet (5321) and a second antenna sheet (5322) which are arranged in a crisscross manner, and grooves (5323) are formed in the first antenna sheet (5321) and the second antenna sheet (5322) side by side.

5. The multi-stream UE test mask box of claim 4, wherein: a vertical slot (5324) is formed in the middle of the second antenna sheet (5322), and hook grooves (5325) are formed in the first antenna sheet (5321) and the second antenna sheet (5322).

6. The multi-stream UE test mask box of claim 1, wherein: the inner wall of the box body (1) is provided with a layer of spike layer (11) with sharp corners facing the inside of the box, and the spike layer (11) is made of pyramid wave-absorbing materials.

7. The multi-stream UE test mask box of claim 2, wherein: through holes are formed in a bottom bearing table (61) in the placing groove (63), a data connection plugboard (12) is arranged on the inner bottom surface of the box body (1), USB interfaces with the same number as the placing grooves (63) are arranged on the data connection plugboard (12), and data transmission lines connected with equipment to be tested through the corresponding through holes are arranged on the USB interfaces.

8. The multi-stream UE test mask box of claim 2, wherein: a plurality of heat dissipation holes (621) are uniformly distributed on the bending plate (62), and a plurality of round holes (611) are formed in the center of the bearing table (61).

9. The multi-stream UE test mask box of claim 1, wherein: an air inlet (13) and an air outlet (14) are further formed in one side face of the box body (1), ventilation waveguide windows (15) are formed in the outer side of the air inlet (13) and the outer side of the air outlet (14), and fans (16) are arranged on the inner side of the air inlet (13) and the inner side of the air outlet (14).

10. The multi-stream UE test mask box of claim 2, wherein: the included angle between the bending plate (62) and the bearing table (61) is 90-135 degrees.