CN103812585A - Darkroom - Google Patents
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- CN103812585A CN103812585A CN201210479010.9A CN201210479010A CN103812585A CN 103812585 A CN103812585 A CN 103812585A CN 201210479010 A CN201210479010 A CN 201210479010A CN 103812585 A CN103812585 A CN 103812585A
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Abstract
The invention discloses a darkroom. The darkroom comprises a shielding box, a wave-absorbing material layer and a plurality of measuring antennas, wherein the wave-absorbing material layer is arranged on an inner wall of the shielding box; and the measuring antennas are arranged on the inner wall of the shielding box and are suitable for being connected with a cable outside the shielding box. The darkroom has the advantages of being low in manufacturing cost and small in occupied space and improving wireless communication measurement accuracy and consistency.
Description
Technical field
The present invention relates to field of measuring technique, especially relate to a kind of darkroom for performance for wireless communications parameter measurement.
Background technology
Mobile terminal will be according to CTIA(mobile communications network association in the time carrying out network access testing) standard communicates the test of performance.According to the standard of CTIA, on the sphere take measured piece as the centre of sphere, after different spatial is measured measured piece, all test result COMPREHENSIVE CALCULATING are drawn to corresponding index.Measuring system for this test needs specific test environment conventionally, for example, need to use microwave dark room, impact measurement result being caused for eliminating environmental noise.
The shielding case body of existing microwave dark room is generally rectangular shape, and hoop antenna support is set in darkroom, and antenna (also referred to as measuring antenna) is along being circumferentially located at equably on described hoop antenna support.
There is following problem in above-mentioned darkroom: first, due to hoop antenna support being set in darkroom, has increased number of elements, improve cost, hoop antenna support has occupied the space in darkroom, and hoop antenna support can reflect the electromagnetic wave in darkroom, has reduced thus certainty of measurement.In order to reduce hoop antenna support to electromagnetic reflection, need on hoop antenna support, absorbing material be set, thereby further cause manufacturing complexity, cost increases.
Secondly, because antenna is along being circumferentially located at equably on described hoop antenna support, the direction of diametrically opposed locational antenna in darkroom in complete correlation, especially in the time of the good antenna of installation direction, not only increase ELECTROMAGNETIC REFLECTION (being caused by exposed antenna outside absorbing material), and cross when near and can cause the coupled interference effect between antenna when antenna distance, have a strong impact on measurement effect, must increase the size in darkroom for this reason, limit the miniaturization in darkroom, cause that existing darkroom volume is large, cost is high, poor mobility, use inconvenience.Existing little darkroom, for example, be less than the darkroom of 4 meters, although size reduction, certainty of measurement is poor.
Again, because antenna ring support is located in shielding case body, the telecommunication cable being connected with antenna is also all at the inner cabling of shielded box.Telecommunication cable, as well-known strong measurements interference source, can reduce the precision of measuring greatly.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, one object of the present invention is to propose a kind of darkroom, and described darkroom is simple in structure, measurement is accurate and Miniaturizable.
Comprise according to the darkroom of the embodiment of the present invention: shielding case body; Absorbing material layer, described absorbing material layer is located on the inwall of described shielding case body; With multiple measurement antennas, multiple described measurement antennas are located on the inwall of described shielding case body and are suitable for being connected with the cable of described shielding case body outside.
According to the darkroom of the embodiment of the present invention, by absorbing material layer and multiple measurement antenna are arranged on the inwall of shielding case body, thereby can utilize fully the bearing function of shielding case body, without loop aerial support is set in shielding case body.Not only can save thus the manufacturing cost of loop aerial support, and can eliminate the electromagnetism being caused by loop aerial support and block and the ELECTROMAGNETIC REFLECTION error that measurement causes to radio communication, improve precision and the consistency measured.
And, by multiple measurement antennas are arranged on the inwall of shielding case body, thereby the cable being connected with measurement antenna all can be arranged on to the outside of shielding case body, thus shielding case body can by with measure the electromagnetic radiation that the cable that is connected of antenna produces and mask completely, to avoid the internal measurement environment of the electromagnetic interference shielding case body that cable produces.That is to say, by cable being all arranged on to the outside of shielding case body, thereby can eliminate significantly the inner noise source existing of shielding case body, can improve thus precision and the consistency of measurement.
In addition, because absorbing material layer and multiple measurement antenna are arranged on the inwall of shielding case body, therefore the inner surface of absorbing material layer (radio frequency terminal surface), measure the inner surface of antenna and the inwall of shielding case body spatially can almost overlap.Not only can greatly reduce to measure thus the space taking between the inner surface of antenna and the inwall of shielding case body, and be centered around and measure antenna absorbing material layer around and can effectively eliminate the ELECTROMAGNETIC REFLECTION that in shielding case body, interfere with wireless communications is measured, further improve precision and consistency that radio communication is measured.
Therefore, according to the darkroom of the embodiment of the present invention there is low cost of manufacture, take up room little, can miniaturization, be convenient to mobilely, easy to use, improved the advantage such as precision and consistency of measuring.
In addition, darkroom according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, described shielding case body is spherical.
According to one embodiment of present invention, the cross section that described shielding case body is column and described shielding case body is circle or regular polygon.
According to one embodiment of present invention, the limit number of described regular polygon is N, and N >=3.
According to one embodiment of present invention, it is 12 that N is counted on the limit of described regular polygon, and the quantity of described measurement antenna is 5.
According to one embodiment of present invention, upwards stagger each other in any two footpaths at described shielding case body in described multiple measurement antenna.Can utilize fully thus the symmetry of shielding case body, the quantity of measurement antenna required same density measurement is reduced by half, further reduce design cost and the manufacturing cost in darkroom, greatly widen and measured the distance between antenna, improve certainty of measurement, and shielding case body can miniaturization, be convenient to mobile and carrying, improve application.
According to one embodiment of present invention, described shielding case body is limited with longitudinal axis, described multiple measurement antenna arrangement with the orthogonal same plane of the longitudinal axis of described shielding case body in.Can further reduce thus the manufacture difficulty in darkroom, improve certainty of measurement.
According to one embodiment of present invention, the first end of described multiple measurement antennas is arranged on the inwall of described shielding case body and is positioned at longitudinal centre line take described shielding case body on the same circumference in the center of circle.Can further improve thus the global symmetry in darkroom.
According to one embodiment of present invention, the second end of described multiple measurement antennas is positioned at longitudinal centre line take described shielding case body on the same circumference in the center of circle.Can further improve thus the global symmetry in darkroom.
According to one embodiment of present invention, axially intersecting each other of any two the measurement antennas in described multiple measurement antenna.
According to one embodiment of present invention, the inner surface of described absorbing material layer is toothed surfaces.Can further improve thus the wave absorbing efficiency of absorbing material layer, making to measure the electromagnetic wave that antenna sends can be absorbed fully by absorbing material layer, effectively eliminate the ELECTROMAGNETIC REFLECTION that in shielding case body, interfere with wireless communications is measured, further improve precision and consistency that radio communication is measured.
According to one embodiment of present invention, the positive multi-prism taper tooth that the tooth on the inner surface of described absorbing material layer is discrete distribution.Can further improve thus the wave absorbing efficiency of absorbing material layer, making to measure the electromagnetic wave that antenna sends can be absorbed fully by absorbing material layer, effectively eliminate the ELECTROMAGNETIC REFLECTION that in shielding case body, interfere with wireless communications is measured, further improve precision and consistency that radio communication is measured.
According to one embodiment of present invention, described multiple measurement antenna is coated in described absorbing material layer.
According to one embodiment of present invention, the first end of described multiple measurement antennas is arranged on the inwall of described shielding case body and the second end of described multiple measurement antennas exposes from described absorbing material layer.Can make thus to measure antenna and receive fully wireless signal, further improve precision and consistency that radio communication is measured.
According to one embodiment of present invention, the second end of described multiple measurement antennas extends beyond the inner surface preset distance of described absorbing material layer.Can make thus to measure antenna and receive more fully wireless signal, further improve precision and consistency that radio communication is measured.
According to one embodiment of present invention, the outer wall of described shielding case body is provided with for holding the cable that is connected with described measurement antenna and the cable trough along the circumferential extension of described shielding case body.Not only can protect cable thus, and can make the outward appearance in darkroom cleaner and tidier.
According to one embodiment of present invention, described cable trough is provided with groove lid.Can further protect cable thus.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the schematic diagram in darkroom according to an embodiment of the invention;
Fig. 2 is the schematic diagram in darkroom according to another embodiment of the invention;
Fig. 3 is according to the schematic diagram of the runner assembly in the darkroom of the embodiment of the present invention;
Fig. 4 is according to the schematic perspective view in the darkroom of the embodiment of the present invention.
Darkroom 100, shielding case body 110, inwall 111, outer wall 112, groove lid 113, absorbing material layer 120, measurement antenna 130, first end 131, the second end 132, cable 140, holder tool 200, runner assembly 300, rotating shaft 310, drive motors 320, waveguide 400.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is more than three or three, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
Describe according to the darkroom 100 of the embodiment of the present invention below with reference to Fig. 1 and Fig. 2.As depicted in figs. 1 and 2, comprise shielding case body 110, absorbing material layer 120 and multiple measurement antenna 130 according to the darkroom 100 of the embodiment of the present invention.
According to the darkroom 100 of the embodiment of the present invention by absorbing material layer 120 and multiple measurement antenna 130 are arranged on the inwall 111 of shielding case body 110, thereby can utilize fully the bearing function of shielding case body 110, without at the interior loop aerial support that arranges of shielding case body 110.Not only can save thus the manufacturing cost of loop aerial support, and can eliminate the electromagnetism being caused by loop aerial support and block and the ELECTROMAGNETIC REFLECTION error that measurement causes to radio communication, improve precision and consistency that radio communication is measured, improve precision and the consistency of whole wireless communication measuring system.
And, by multiple measurement antennas 130 being arranged on the inwall 111 of shielding case body 110, thereby the cable being connected with measurement antenna 130 all can be arranged on to the outside of shielding case body 110, thus shielding case body 110 can by with measure the electromagnetic radiation that the cable that is connected of antenna 130 produces and mask completely, to avoid the internal measurement environment of the electromagnetic interference shielding case body 110 that cable produces.That is to say, by cable being all arranged on to the outside of shielding case body 110, thereby can eliminate significantly the inner noise source existing of shielding case body 110, can improve thus precision and the consistency of measurement.
In addition, because absorbing material layer 120 and multiple measurement antenna 130 are arranged on the inwall 111 of shielding case body 110, therefore the inner surface of absorbing material layer 120 (radio frequency terminal surface), measure the inner surface of antenna 130 and the inwall 111 of shielding case body 110 spatially almost overlaps.Not only can greatly reduce thus to measure the space taking between the inner surface of antenna 130 and the inwall 111 of shielding case body 110, and the absorbing material layer 120 being centered around around measurement antenna 130 can be eliminated the ELECTROMAGNETIC REFLECTION that the interior interfere with wireless communications of shielding case body 110 is measured, further precision and the consistency of raising measurement effectively.
Therefore, according to the darkroom 100 of the embodiment of the present invention there is low cost of manufacture, take up room little, improved the advantage such as precision and consistency of measuring, and guaranteeing certainty of measurement in the situation that, can miniaturization, for example shielding case body can be the square casing of 1 meter for the length of side.
In an example of the present invention, for example, on shielding case body 110, in the position that installs and measures antenna 130, through hole can be set, outside cable is connected with measurement antenna 130 through through hole, the end that cable can be arranged on shielding case body 110 inwalls with measurement antenna 130 is connected, the end that also can be arranged on shielding case body 110 inwalls at measurement antenna 130 arranges joint, when measure antenna 130 be installed to shielding case body 110 interior after, joint stretches out in shielding case body 110, thereby be connected with external cable, improved thus the convenience that cable connects.
Particularly, shielding case body 110 can be spherical.As shown in Figure 4, shielding case body 110 can be that the cross section of column and shielding case body 110 can be circle or regular polygon.What it will be appreciated by those skilled in the art that is, shielding case body 110 have opening and for close opening door, as described in Figure 4, on the left side of shielding case body 110, be provided with opening and for opening and closing the door 114 of opening, thereby be convenient to measured piece to be placed in shielding case body 110 and from the interior taking-up of shielding case body 110.Certainly, the present invention is not limited to this, and for example, the left end wall of shielding case body 110 can open and close, to form described opening and door.Door 114 is provided with locking device 115, for lock door 114.
As shown in Figure 1, advantageously, the cross section of shielding case body 110 can be regular polygon.Can reduce thus manufacture difficulty and the manufacturing cost of shielding case body 110, improve certainty of measurement, can reduce the quantity of measuring antenna 130.And because regular polygon has centre symmetry, even if therefore multiple measurement antennas 130 are arranged in different edge, multiple measurement antennas 130 still can, on same circle, can improve certainty of measurement.
The limit number of described regular polygon can be N, and N can be more than or equal to 3.Preferably, it can be 12 that N is counted on the limit of described regular polygon, and the quantity of measurement antenna 130 can be 5.Can, not affecting under the precision and conforming situation of radio communication measurement, reduce manufacture difficulty and the manufacturing cost in darkroom 100 thus.
And the absorbent properties of absorbing material layer 120 significantly weaken along with the increase of electromagnetic wave incidence angle.The shielding case body 110 that is dodecagon for cross section, the electromagnetic wave maximum incident angle on any limit of shielding case body 110 is ± 15 degree, thereby can significantly promote the wave absorbing efficiency of absorbing material layer 120, and then can improve precision and the consistency of measurement.
As shown in Figure 1, in some embodiments of the invention, upwards stagger each other in any two footpaths at shielding case body 110 in multiple measurement antennas 130, here radially stagger and should be interpreted broadly, as long as any two measurement antennas 130 not each other just to, for example measure antenna 130 no longer in same plane, or measurement antenna 130 is in same plane, but any two measurement antennas 130 are just not right diametrically, will be described in more detail below.
Can utilize fully thus the symmetry of shielding case body 110, the quantity of measurement antenna 130 required same density measurement is reduced by half, further reduce design cost and the manufacturing cost in darkroom 100, greatly widened and measured the distance between antenna 130, improved certainty of measurement.And, stagger each other owing to measuring antenna, make in the situation that meeting certainty of measurement, shielding case body can miniaturization, is convenient to mobile and carrying, has improved application.
Particularly, by upwards being staggered each other in any two footpaths at shielding case body 110 in multiple measurement antennas 130, not only can guarantee that the contraposition position of each measurement antenna 130 is by 120 all standing of absorbing material layer, making to measure the electromagnetic wave that antenna 130 sends can be absorbed fully by absorbing material layer 120, and can make the limit, two ortho positions of each measurement antenna 130 exist without measuring antenna 130, under the condition of equal big or small shielding case body 110, can improve the distance of measuring between antenna 130, reduce coupled interference and ELECTROMAGNETIC REFLECTION between adjacent measurement antenna 130, can reduce the volume of shielding case body 110.
For example, in the time that two measurement antennas 130 are positioned at same plane, these two measurement antennas 130 upwards stagger each other and refer to these two measurement antennas 130 in same footpath not upwards in the footpath of shielding case body 110.When two measurement antennas 130 are not during at same plane, even if these two measurement antennas 130 at grade be projected in same footpath upwards, these two measurement antennas 130 also upwards stagger each other in the footpath of shielding case body 110.
Advantageously, when different on two adjacent limits of shielding case body 110, install and measure antenna 130(and only in two adjacent limits of shielding case body 110, install and measure antenna 130), and a measurement antenna 130(is only installed on two relative limits of shielding case body 110 in two relative limits of shielding case body 110, installs and measures antenna 130).In the time measuring, because the antenna measurement value of the measurement antenna 130 of contraposition direction is identical and opposite direction only, therefore can, by measuring unilateral communication index and carrying out 180 degree conversions, can obtain corresponding contraposition radio-frequency information.As shown in Figure 1, the shielding case body 110 take cross section as dodecagon is example, and holder tool 200 limits, place are the 1st limit, and sequence installs and measures antenna 130 respectively on the the 2nd, 4,6,9 and 11 limits in the direction of the clock.Thus, can reduce the quantity of required measurement antenna 130, and improve certainty of measurement.
Advantageously, shielding case body 110 can be limited with longitudinal axis, and as mentioned above, shielding case body 110 can be column, and multiple measurement antennas 130 can be arranged in the same plane orthogonal with the longitudinal axis of shielding case body 110.Can further improve thus certainty of measurement.
As shown in Figure 1, in one embodiment of the invention, the first end 131 of multiple measurement antennas 130 can be arranged on the inwall 111 of shielding case body 110, and the first end 131 of multiple measurement antennas 130 can be positioned at longitudinal centre line take shielding case body 110 on the same circumference in the center of circle.Can further improve thus certainty of measurement.Advantageously, the second end 132 of multiple measurement antennas 130 can be positioned at longitudinal centre line take shielding case body 110 on the same circumference in the center of circle.Can further improve thus the certainty of measurement in darkroom 100.Preferably, axially intersecting each other of any two the measurement antennas 130 in multiple measurement antennas 130.
As shown in Figure 1, in examples more of the present invention, the inner surface of absorbing material layer 120 can be toothed surfaces.Can further improve thus the wave absorbing efficiency of absorbing material layer 120, making to measure the electromagnetic wave that antenna 130 sends can be absorbed fully by absorbing material layer 120, effectively eliminate the ELECTROMAGNETIC REFLECTION that the interior interfere with wireless communications of shielding case body 110 is measured, further improve precision and the consistency measured.
Advantageously, the tooth on the inner surface of absorbing material layer 120 can be the positive multi-prism taper tooth of discrete distribution.Can further improve thus the wave absorbing efficiency of absorbing material layer 120, making to measure the electromagnetic wave that antenna 130 sends can be absorbed fully by absorbing material layer 120, effectively eliminate the ELECTROMAGNETIC REFLECTION that the interior interfere with wireless communications of shielding case body 110 is measured, further improve precision and the consistency measured.
Advantageously, the second end 132 of multiple measurement antennas 130 extends beyond the inner surface preset distance of absorbing material layer 120.Can make thus to measure antenna 130 and receive more fully wireless signal, further improve precision and the consistency measured.
On the outer wall 112 of shielding case body 110, can be provided with for holding and measuring the cable 140 that is connected of antenna 130 and the cable trough along the circumferential extension of shielding case body 110.Not only can protect cable 140 thus, and can make the outward appearance in darkroom 100 cleaner and tidier.Advantageously, as shown in Figure 4, on described cable trough, can be provided with groove lid 113.Can further protect cable 140 thus.Here, broad understanding should be made in term " cable trough ", for example, can be formed in the upper groove of shielding case body 110 periphery walls, can be also along being circumferentially located on the periphery wall of shielding case body 110 and limiting reeded parts.
Describe according to the measuring system in darkroom with the embodiment of the present invention below with reference to Fig. 1-Fig. 4.As Figure 1-Figure 4, comprise darkroom, holder tool 200 and measuring instrument according to the measuring system of the embodiment of the present invention.
Described darkroom can be the darkroom 100 of describing according to above-described embodiment, and holder tool 200 is located in shielding case body 110 for carrying measured piece.Described measuring instrument is located at shielding case body 110 outsides, and described measuring instrument can be connected with measurement antenna 130 by cable 140.
According to the measuring system of the embodiment of the present invention by the darkroom 100 according to above-described embodiment is set, thereby there is low cost of manufacture, precision and consistency advantages of higher that little, the radio communication of taking up room is measured.
As shown in Figure 1-Figure 3, in some embodiments of the invention, described measuring system can also comprise runner assembly 300, runner assembly 300 can be located at shielding case body 110 outsides, here, it will be appreciated that, runner assembly 300 is located at shielding case body 110 outsides should make broad understanding, a part that comprises runner assembly is arranged in the wall of shielding case body 110, or extend into a little in shielding case body 110, and runner assembly 300 can be connected with holder tool 200 to drive holder tool 200 in the interior rotation of shielding case body 110.Disturb by runner assembly 300(runner assembly 300 being caused to ELECTROMAGNETIC REFLECTION) be arranged on shielding case body 110 outsides, can make except the microwave receiving plane of measurement antenna 130, all to be covered by absorbing material layer 120 in shielding case body 110, the ELECTROMAGNETIC REFLECTION that the interior interfere with wireless communications of shielding case body 110 is measured be can more effectively eliminate thus, precision and consistency further improved.
Advantageously, as depicted in figs. 1 and 2, holder tool 200 can be arranged with waveguide 400 with the junction of runner assembly 300.Waveguide 400 can be isolated the external electromagnetic interference of the junction of holder tool 200 and runner assembly 300.The ELECTROMAGNETIC REFLECTION that the interior interfere with wireless communications of shielding case body 110 is measured be can more effectively eliminate thus, precision and consistency that radio communication is measured further improved.
As shown in Figure 3, in a concrete example of the present invention, runner assembly 300 can comprise rotating shaft 310 and drive motors 320.One end of rotating shaft 310 can be rotatably installed in the wall of shielding case body 110, for example, be arranged in the wall of shielding case body 110 by bearing, and holder tool 200 can be arranged on described one end of rotating shaft 310.Drive motors 320 can be connected with the other end of rotating shaft 310.Drive holder tool 200 to rotate by runner assembly 300, can further reduce the quantity of measuring antenna 300, improve certainty of measurement.
In some embodiments of the invention, as shown in Figure 4, shielding case body 110 can be arranged on pedestal 500.The lower end of rotating shaft 310 can rotatably be supported on pedestal 500.
Advantageously, described measured piece can be passive measured piece, described measured piece can with successively through rotating shaft 310 with ask the service cable of tool 200 to be connected.Can expand thus the range of application of described measuring system, and service cable can not cause adverse effect to measuring.
In one embodiment of the invention, holder tool 200 can be made up of the electromagnetic material of transmissive, reduces thus the interference to measuring, for example, can be less than 3 material by dielectric constant and make as polystyrene.In other words, holder tool neither reflection electromagnetic wave, also electromagnetic wave absorption not, thus do not affect certainty of measurement.
Can also comprise external container (not shown) according to measuring system of the invention process, darkroom 100, holder tool 200 and described measuring instrument can be located in described external container.Described measuring system has advantages of and is convenient to mobile and carrying thus.
According to darkroom of the invention process and the measuring system with this darkroom, in darkroom, install and measure the support of antenna without setting, reduce number of elements, reduce manufacturing cost, eliminated support to electromagnetic reflection, improved certainty of measurement, and darkroom can miniaturization, mobility is good, easy to use, and certainty of measurement is high.Meanwhile, in darkroom, there is no cable, further eliminated the impact of cable on certainty of measurement.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (17)
1. a darkroom, is characterized in that, comprising:
Shielding case body;
Absorbing material layer, described absorbing material layer is located on the inwall of described shielding case body; With
Multiple measurement antennas, multiple described measurement antennas are located on the inwall of described shielding case body and are suitable for being connected with the cable of described shielding case body outside.
2. darkroom according to claim 1, is characterized in that, described shielding case body is spherical.
3. darkroom according to claim 1, is characterized in that, described shielding case body is that the cross section of column and described shielding case body is circle or regular polygon.
4. darkroom according to claim 3, is characterized in that, the limit number of described regular polygon is N, and N >=3.
5. darkroom according to claim 4, is characterized in that, it is 12 that N is counted on the limit of described regular polygon, and the quantity of described measurement antenna is 5.
6. according to the darkroom described in any one in claim 1-5, it is characterized in that, upwards staggers each other in any two footpaths at described shielding case body in described multiple measurement antennas.
7. darkroom according to claim 6, is characterized in that, described shielding case body is limited with longitudinal axis, described multiple measurement antenna arrangement with the orthogonal same plane of the longitudinal axis of described shielding case body in.
8. darkroom according to claim 7, is characterized in that, the first end of described multiple measurement antennas is arranged on the inwall of described shielding case body and is positioned at longitudinal centre line take described shielding case body on the same circumference in the center of circle.
9. darkroom according to claim 8, is characterized in that, the second end of described multiple measurement antennas is positioned at longitudinal centre line take described shielding case body on the same circumference in the center of circle.
10. darkroom according to claim 7, is characterized in that, axially the intersecting each other of any two the measurement antennas in described multiple measurement antennas.
11. according to the darkroom described in any one in claim 1-10, it is characterized in that, the inner surface of described absorbing material layer is toothed surfaces.
12. darkrooms according to claim 11, is characterized in that, the positive multi-prism taper tooth that the tooth on the inner surface of described absorbing material layer is discrete distribution.
13. darkrooms according to claim 11, is characterized in that, described multiple measurement antennas are coated in described absorbing material layer.
14. darkrooms according to claim 11, is characterized in that, the first end of described multiple measurement antennas is arranged on the inwall of described shielding case body and the second end of described multiple measurement antennas exposes from described absorbing material layer.
15. darkrooms according to claim 14, is characterized in that, the second end of described multiple measurement antennas extends beyond the inner surface preset distance of described absorbing material layer.
16. darkrooms according to claim 1, is characterized in that, the outer wall of described shielding case body is provided with for holding the cable that is connected with described measurement antenna and the cable trough along the circumferential extension of described shielding case body.
17. darkrooms according to claim 16, is characterized in that, described cable trough is provided with groove lid.
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| CN201210479010.9A CN103812585B (en) | 2012-11-13 | 2012-11-22 | darkroom |
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| CN201210479010.9A CN103812585B (en) | 2012-11-13 | 2012-11-22 | darkroom |
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| CN105515692A (en) * | 2016-01-08 | 2016-04-20 | 深圳市通用测试***有限公司 | Wireless equipment test system |
| CN107064576A (en) * | 2017-05-04 | 2017-08-18 | 中山香山微波科技有限公司 | Anechoic chamber, |
| CN107154825A (en) * | 2017-06-26 | 2017-09-12 | 北京中科国技信息***有限公司 | The OTA test systems and method of NB IoT equipment |
| CN113567471A (en) * | 2021-09-27 | 2021-10-29 | 宜宾盛纬伦科技有限公司 | Device and method for testing high-frequency wave-absorbing performance of wave-absorbing material |
| CN115403328A (en) * | 2022-08-12 | 2022-11-29 | 电子科技大学 | Environment-friendly darkroom wave-absorbing material and preparation method and application thereof |
| CN117347734A (en) * | 2023-10-08 | 2024-01-05 | 东南大学 | Method for selecting position of special-shaped shielding shell shielding effectiveness test antenna |
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Effective date of registration: 20151214 Address after: 518102, building, A building, the Peach Garden science and Technology Innovation Park, Xixiang street, Shenzhen, Guangdong, 101-106 Applicant after: SHENZHEN GENERAL TEST SYSTEMS CO., LTD. Address before: 518102, building, A building, the Peach Garden science and Technology Innovation Park, Xixiang street, Shenzhen, Guangdong, 101-114 Applicant before: Shenzhen Dinglifang Wireless Technology Co., Ltd. |
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