CN205356355U - Wireless terminal's test system - Google Patents
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- CN205356355U CN205356355U CN201521139325.4U CN201521139325U CN205356355U CN 205356355 U CN205356355 U CN 205356355U CN 201521139325 U CN201521139325 U CN 201521139325U CN 205356355 U CN205356355 U CN 205356355U
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Abstract
The utility model discloses a wireless terminal's test system, this system includes: measured piece, measured piece are wireless terminal, shielding box, the internal wall of shielded cell include reflecting part and absorption portion, and reflecting part surface at least is the metal for radio signal to the wireless terminal transmission carries out the total reflection, and absorption portion is equipped with absorbing material, is used for absorbing radio wave, test antenna for carry out radio communication with the measured piece, the absorbing screen, the material of absorbing screen is absorbing material, and the absorbing screen setting is between measured piece and test antenna for absorb radio wave, and the measured piece, the position relation of test antenna and reflecting part corresponds the same ellipsoid body, and wherein, measured piece and test antenna set up respectively in ellipse spheroidal two focuses, and the reflecting part setting is on ellipse spheroidal ellipsoid surface. The utility model discloses wireless terminal's test system has that test result repeatability error is little, the test result is stable, efficiency of software testing advantage such as high, with low costs.
Description
Technical field
This utility model relates to technical field of wireless terminals, particularly to the test system of a kind of wireless terminal.
Background technology
Along with the development of wireless terminal (such as mobile phone, panel computer etc.) technology, wireless terminal comes into a lot of links in daily life.The demand of the production in enormous quantities of wireless terminal result in the demand that wireless terminal carries out quickly test.Therefore a kind of radio frequency test system that can quickly wireless terminal be tested needs to be proposed, and to guarantee both quality and quantity produces end product.
Owing to the antenna of mobile radio-communications terminal is frequently not beam antenna, but have radiation to space all directions, therefore, testing standard according to CTIA (U.S.'s radio communication and internet society), it is OTA (Over-The-Air, spatial port communication performance) test by the test definition that the wireless performance of wireless terminal is carried out.The basic ideas of OTA test are by testing the total radiant power TRP (TotalRadiatedPower) measuring terminal from wireless terminal at the energy that different solid angles radiate；Terminal receiving sensitivity by testing out in different solid angles determines total receiving sensitivity TIS (TotalIsotropicSensitivity) of terminal simultaneously.
At present, a kind of main method of testing is great circle patterning method: tested mobile terminal is placed in the center of a three-dimensional turntable, measured piece can rotate (corresponding with θ angle and φ angle respectively) around 2 axles along with turntable, adopt a test antenna, measured piece and test antenna are all disposed within microwave dark room, measured piece receives towards the tested antenna of direct signal of test antenna, measured piece is absorbed to the radiation signal in other directions by the absorbing material arranged in microwave dark room, according to testing requirement during test, measured piece is rotated with default angle interval, often turn to a position just to stop and carry out the test of signal intensity；The measurement time can be reduced by adjustment rotational angle interval.After the radiation signal of all directions is measured, process through data such as integrations, generate test result.
Another kind of main method of testing is circular cone patterning method: laying multiple quadrature dualpolarizeds test antenna in the θ angular direction of spherical coordinates according to preset pitch, the φ angular range of spherical coordinates is then completed by turntable.Its test process is as follows: turn to from 0 ° at φ angle the stepping process of 360 °, and test system electrical switch points to each probe antenna at θ angle successively and does the test of direction signal intensity or sensitivity.After completing same orientation, polarization test point data acquisition, process through surface integral data, so that it may draw total radiant power TRP or terminal receiver global radiation sensitivity TIS that wireless terminal radiates to free space.
But the measuring speed testing system at present is slower, again owing to requiring that the distance between test antenna and measured piece is more than far field distance, so that part to be measured is in the plane wave illumination of test antenna, this results in the bulky of measurement system, manufacturing cost is high, and the scope of application is little, it is unfavorable for the extensive Quality Detection of wireless terminal.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique at least to a certain extent.For this, a purpose of the present utility model is in that to propose the test system of a kind of wireless terminal, simplifies test system structure, reduces system dimension, has that test result repeatability error is little, test result is stable, and testing efficiency is high, low cost and other advantages.
For reaching above-mentioned purpose, according to the test system that the utility model proposes a kind of wireless terminal, including: measured piece, described measured piece is wireless terminal；Shielding case body, described shielding case body inwall includes reflecting part and absorbent portion, and described reflecting part at least surface is metal, and for the wireless signal of described Radioterminal Transmit is totally reflected, described absorbent portion is provided with absorbing material, for radio wave absorbing；Test antenna, for carrying out radio communication with described measured piece；Absorbing screen, the material of described absorbing screen is absorbing material, and described absorbing screen is arranged between described measured piece and described test antenna, for radio wave absorbing；And described measured piece, the corresponding same spheroid of the position relationship of described test antenna and described reflecting part, wherein, described measured piece and described test antenna are separately positioned in two focuses of described spheroid, and described reflecting part is arranged on the ellipsoid of described spheroid.
Test system according to wireless terminal of the present utility model, the radiation signal of the multiple directions launched by measured piece by elliposoidal reflecting surface converges to test antenna, the radiation signal making multiple directions reaches the superposition of homophase phase place at test antenna place, power combing, such that it is able to once record the power sum of the multiple directions radiation signal that measured piece is launched, relative to the test system used by traditional method, operate simpler, test speed is faster, avoid repeatedly retest operation, test result repeatability error is little, test result is stable, and owing to part to be measured needs not be at the plane wave illumination of test antenna, therefore, therebetween distance can less than far field distance required in legacy test system, thus simplifying test system structure, reduce system dimension, it is particularly suited for wireless terminal performance and detects in the high-speed traffic performance of production line.
It addition, the test system according to the above-mentioned wireless terminal of this utility model can also have following additional technical characteristic:
In this utility model, described measured piece is arranged on the first focus of described spheroid, described test antenna is arranged on the second focus of described spheroid, on described spheroid major axis, the first summit is perpendicular to the plane of described spheroid major axis to the arbitrfary point between described second focus, and by described ellipsoid from described first summit to described plane partly as described reflecting part, by described shielding case body inwall except described reflecting part partly as described absorbent portion, wherein, described first summit is the end points of the major axis of described spheroid, and the distance between described first summit and described first focus is less than the half of described spheroid long axis length.
In this utility model, described measured piece is arranged on the first focus of described spheroid, described test antenna is arranged on the second focus of described spheroid, on described spheroid major axis, the first summit is perpendicular to the first plane of described spheroid major axis to the first arbitrfary point between described second focus, on described spheroid major axis, the first summit is perpendicular to the second plane of described spheroid major axis to the second arbitrfary point between described first focus, and by the first plane described in described ellipsoid and between described second plane partly as described reflecting surface, by described shielding case body inwall except described reflecting part partly as described absorbent portion, wherein, described first summit is the end points of the major axis of described spheroid, and the distance between described first summit and described first focus is less than the half of described spheroid long axis length, distance between described first arbitrfary point and described first summit is more than the distance between described second arbitrfary point and described first summit.
In this utility model, wherein, described first plane is equal to the distance of described first focus with described second plane to the distance of described first focus；Or described first plane is equal to the spherical distance of the plane being perpendicular to described major axis at described first focus place with described second plane to the spherical distance of the plane being perpendicular to described major axis at described first focus place.
In this utility model, described first plane to the spherical distance of described second plane more than in test frequency range one times of wavelength corresponding to minimum frequency.
In this utility model, described reflecting part is the inwall of described shielding case body.
In this utility model, described absorbing screen is arranged on the midpoint of two focus lines of described spheroid.
In this utility model, described absorbing screen is circular or polygon, and the external diameter of a circle of described absorbing screen is not less than λ/2, and wherein, described λ is the wavelength in test frequency range corresponding to minimum frequency.
In this utility model, described system also includes: test instrumentation, and described test instrumentation is connected with described test antenna, for detecting the wireless signal that described test antenna receives, and/or the wireless signal that described test antenna is launched.
Accompanying drawing explanation
This utility model above-mentioned and/or that add aspect and advantage will be apparent from easy to understand from the following description of the accompanying drawings of embodiments, wherein,
Fig. 1 is the structural representation of the test system of the wireless terminal according to one embodiment of this utility model；
Fig. 2 is the structural representation of the test system of the wireless terminal according to another embodiment of this utility model；
Fig. 3 is the perspective view of the test system of the wireless terminal according to one specific embodiment of this utility model.
Detailed description of the invention
Being described below in detail embodiment of the present utility model, 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 same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to be used for explaining this utility model, and it is not intended that to restriction of the present utility model.
Below with reference to the accompanying drawings the test system of wireless terminal according to this utility model embodiment is described.
Fig. 1 is the structural representation of the test system of the wireless terminal according to one embodiment of this utility model.
As it is shown in figure 1, the test system of the wireless terminal according to this utility model embodiment, including: shielding case body 1 (not shown in figure 1), measured piece 200, test antenna 300 and absorbing screen 400.Wherein, shielding case body 1 inwall includes reflecting part 102 and absorbent portion 103.
Specifically, measured piece 200 is wireless terminal, can launch wireless signal to reflecting part 102.Wherein, measured piece 200 can be the hardware devices such as mobile phone, panel computer, personal digital assistant.
In embodiment of the present utility model, controller control measured piece 200 can be passed through and send wireless signal.
The reflecting part 102 of shielding case body 1 inwall is for being totally reflected the wireless signal of Radioterminal Transmit, and absorbent portion 103 is provided with absorbing material, for radio wave absorbing.
Wherein, reflecting part 103 can be plate shaped, taper or sandwich composite.The radio wave being mapped to shielding case body 1 inwall can being absorbed into by absorbent portion 103, reducing the reflection within shielded box, thus improving the precision of test.
Reflecting part 102 at least surface is metal.It is to say, reflecting part 102 can be metal material, such as copper, aluminum etc., or other materials (such as plastics, fiberglass etc.) are carried out the material that surface metalation obtains.
Test antenna 300 is for carrying out radio communication with measured piece 200.It is to say, test antenna 300 can according to different test targets to measured piece 200 penetrate wireless signal or receive measured piece 200 launch wireless signal.Specifically, when being received measured piece testing, then test antenna is used for launching wireless signal；When measured piece carries out launching test, then test antenna is used for receiving wireless signal.
In embodiment of the present utility model, the corresponding same spheroid of position relationship of measured piece 200, test antenna 300 and reflecting part 102, wherein, measured piece 200 and test antenna 300 are separately positioned in two focuses of spheroid, and reflecting part 102 is arranged on the ellipsoid of spheroid.Wherein, reflecting part 102 is arranged on ellipsoid to refer to reflecting part 102 and arranges the ellipsoid of position with it and overlap.Below with the focus at measured piece 200 place for the first focus, the focus at test antenna 300 place is the second focus is that example illustrates.
Should be appreciated that and a spheroid is not set in systems in reality is tested.Above-mentioned spheroid is virtual spheroid, only for the position relationship of measured piece 200, test antenna 300 and reflecting part 102 is described, with the position relationship of clear and definite three.
Absorbing screen 400 is arranged between measured piece 200 and test antenna 300, for radio wave absorbing.
In an embodiment of the present utility model, absorbing screen 400 may be provided at the midpoint of two focus lines of above-mentioned spheroid.
The wireless signal that measured piece 200 is launched to test antenna 300 direction can be transmitted directly to test antenna 300 without reflection, and this part is referred to alternatively as direct signal without the signal of reflection.The propagation path passed due to direct signal and reflected signal is different, the phase contrast then caused by propagation path is likely to difference, therefore, direct signal can because phase place be different when arriving test antenna 300 from reflected signal, and it is likely to produce the effect of counteracting or partial stack, reach the purpose of in-phase stacking, power combing surely thus differing.Therefore, in order to avoid this kind of impact, in embodiment of the present utility model, straight line between measured piece 200 and test antenna 300 is provided with absorbing screen 400, for radio wave absorbing, thus, absorbing screen 400 can be passed through and absorb (or stop) the measured piece 200 direct projection wireless signal to test antenna 300.
Owing to measured piece 200 is absorbed to the direct signal of test antenna 300 by absorbing screen 400, embodiment of the present utility model does not consider further that the impact of direct signal.
In an embodiment of the present utility model, the material of absorbing screen 400 can be absorbing material.Further, absorbing screen 400 can be circular or polygon, and the external diameter of a circle of absorbing screen 400 is not less than λ/2, and wherein, λ is the wavelength in test frequency range corresponding to minimum frequency.If it should be noted that absorbing screen 400 is circular, then its circumscribed circle namely itself, say, that if absorbing screen 400 be circle, then the diameter of absorbing screen 400 is not less than λ/2.Thus overwhelming majority direct signal can be absorbed by absorbing screen 400.Additionally, the diameter of absorbing screen 400 or circumscribed circle diameter should not be set to excessive yet, with the path of obstruction free reflected signal.
Wherein, absorbing screen 400 can be plate shaped, taper or sandwich composite.
Thus, by rationally arranging the positions and dimensions of absorbing screen 400, the direct signal that measured piece 200 is launched to test antenna 300 direction can be avoided to arrive test days line 300 thus disturbed test result by diffraction.
In this utility model embodiment, the wireless signal of Radioterminal Transmit can be electromagnetic wave signal.Physical principle according to ellipsoid reflection it can be seen that the electromagnetic wave signal that sends from focus can incide another focus after the reflection of ellipsoid, and on ellipsoid any point to two focuses of ellipsoid distance and be a fixed value.Therefore, the electromagnetic wave signal of Radioterminal Transmit can reflex to test antenna 300 after being reflected portion 102, and to incide the length of the test passed propagation path of antenna 300 after reflecting part 102 reflects from multiple electromagnetic wave signals of Radioterminal Transmit be identical.Thus the phase contrast that propagation path causes above-mentioned multiple electromagnetic wave signal is identical, the wireless signal that test antenna 300 receives can realize in-phase stacking.
In addition, measured piece 200 owing to being positioned at the first focus has certain area distributions, this distribution area is reflected the transversal plane of the certain area that the energy after portion 102 is reflected is concentrated in around the second focus, therefore test antenna 300 needs certain area distributions and more effective could receive the electromagnetic wave energy converged.It is to say, test antenna 300 can being dimensioned to according to certain plane distribution according to measured piece 200.
Below by Fig. 1 and Fig. 2, the setting of reflecting part in this utility model 102 is illustrated.
In an embodiment of the present utility model, as shown in Figure 1, measured piece 200 is arranged on the first focus of spheroid, test antenna 300 is arranged on the second focus of spheroid, on spheroid major axis, the first summit is perpendicular to the plane of spheroid major axis to the arbitrfary point between the second focus, and by ellipsoid from the first summit to plane partly as reflecting part 102, by shielding case body 1 inwall except reflecting part 102 partly as reflecting part 103, wherein, first summit is the end points of the major axis of described spheroid, and the distance that first between summit and the first focus is less than the half of spheroid long axis length.
It is to say, definition spheroid is the first summit from the major axis summit close to the first focus, spheroid is the second summit from the major axis summit close to the second focus.Cross the first summit on spheroid major axis and be perpendicular to the virtual plane of spheroid major axis to the arbitrfary point between the second focus, the intersection of this plane Yu ellipsoid is defined as reflection the second boundary.Then reflecting part 102 be ellipsoid from the first summit to reflection the second boundary part, absorbent portion 103 is shielding case body 1 inwall part except reflecting part 102.
Wherein, absorbent portion 103 may be located on this virtual ellipsoid, it is also possible to for other shapes.For example, the shape of absorbent portion 103 can be a part for cuboid, consequently facilitating processing, and be easy to arrange absorbing material.
Thus, coordinate with reflecting part 103 and can be effectively prevented from secondary reflection by arranging the position of reflection the second boundary.
In another embodiment of the present utility model, as shown in Figure 2, measured piece 200 is arranged on the first focus of spheroid, test antenna 300 is arranged on the second focus of spheroid, on spheroid major axis, the first summit is perpendicular to the first plane of spheroid major axis to the first arbitrfary point between the second focus, on spheroid major axis, the first summit is perpendicular to the second plane of spheroid major axis to the second arbitrfary point between the first focus, and by ellipsoid between the first plane and the second plane partly as reflecting surface, by shielding case body 1 inwall except reflecting part 102 partly as reflecting part 103, wherein, distance between first summit and the first focus is less than the half of spheroid long axis length, distance between first arbitrfary point and the first summit is more than the distance between the second arbitrfary point and the first summit.
It is to say, cross on spheroid major axis the point (between the first summit and the first focus) near the first summit to be perpendicular to the virtual plane of spheroid major axis, the intersection of this plane and ellipsoid is defined as and reflects the first border.The then flat-top ellipsoid part of the reflection the second boundary that reflecting part 102 defines in Fig. 1 for reflection the first border, absorbent portion 103 is shielding case body 1 inwall part except reflecting part 102.It should be noted that, the distance that above-mentioned reflection the first border is from the first summit is nearer than the reflection the second boundary distance from the first summit.
Thus, make reflecting part 102 for flat-top ellipsoid reflecting surface by reflecting the setting on the first border.Owing to the existence of metal mirror dorsad can cause the antenna mismatch of test antenna 300 and measured piece 200, and flat-top ellipsoid reflecting surface can reduce the negative effect of the test not accuracy that this effect is brought.Additionally, flat-top place is set to reflecting part 103 can further improve the repeatability of test.
In an embodiment of the present utility model, the first plane to the spherical distance of the second plane more than in test frequency range one times of wavelength corresponding to minimum frequency.
Fig. 3 is the perspective view of the test system of the wireless terminal according to one specific embodiment of this utility model.This embodiment is based on the reflecting part 102 that the mode shown in Fig. 2 is arranged.
As it is shown on figure 3, the test system of this test system wireless terminal includes: shielding case body 1, measured piece 200, test antenna 300, absorbing screen 400 and support member 500.Wherein, shielding case body 1 inwall includes shielding chamber door 101, reflecting part 102 and absorbent portion 103.
Specifically, shielding case body 1 includes shielding chamber door 101, and shielding chamber door 101 arranges the second plane position place in fig. 2.Wherein, shielding chamber door 101 inwall is set to reflecting part 103, is provided with absorbing material.
Support member 500 is used for supporting measured piece 200 and absorbing screen 400, so that its each comfortable corresponding position.
Wherein, support member 500 can be electromagnetic wave transparent material, or is non-metallic material such that it is able to avoid reflected radio signal causes because of the support member 500 of use metal material interference and error, in order to avoid test is interfered.
In an embodiment of the present utility model, the first plane is equal to the distance of the first focus with the second plane to the distance of the first focus.For example, if measured piece 200 is mobile phone or panel computer, mobile phone or panel computer can be placed horizontally on support member 500.First plane is equal to the distance of the first focus with the second plane to the distance of the first focus, is the first plane equal to the distance of measured piece 200 with the second plane to the distance of measured piece 200.
In another embodiment of the present utility model, the first plane is equal to the spherical distance of the plane being perpendicular to described major axis at described first focus place with described second plane to the spherical distance of the plane being perpendicular to major axis at the first focus place.
Position relationship thereby through above-mentioned first plane Yu the second plane, the position making reflecting part 102 is placed exactly in the emittance principal direction of measured piece 200, the energy major part of measured piece 200 radiation can be focused on reflection by reflecting part 102 such that it is able to improves sensitivity and the accuracy of test system.
In an embodiment of the present utility model, reflecting part 102 can be the inwall of shielding case body 1, thus, reflecting part 102 and shielding case body are integrated, reduce the volume of test box further.
In an embodiment of the present utility model, the test system of wireless terminal may also include test instrumentation.
Test instrumentation is connected with test antenna 300, for detecting the wireless signal that test antenna 300 receives, and/or detects the wireless signal that described test antenna 300 is launched.Wherein, the wireless signal that detection test antenna 300 receives for carrying out launching test to measured piece 200, and the wireless signal that detection test antenna 300 is launched for being received test to measured piece 200.Specifically, test instrumentation can detect the power of wireless signal that test antenna 300 receives or launches, and according to carrying out power summation, measured piece 200 is tested according to power sum.
Specifically, test antenna 300 is by connecting cable connecting test instrument, and test instrumentation obtains the power sum of the wireless signal received for detecting test antenna 300, and obtains test result according to power sum.
Because the reception of wireless signal, transmitting are reciprocity, in like manner foregoing description is also applied for measured piece 200 and receives test, and persons skilled in the art are not it will be understood that repeat them here.
The test system of the wireless terminal of this utility model embodiment, the radiation signal of the multiple directions launched by measured piece by elliposoidal reflecting surface converges to test antenna, the radiation signal making multiple directions reaches the superposition of homophase phase place at test antenna place, power combing, such that it is able to once record the power sum of the multiple directions radiation signal that measured piece is launched, relative to the test system used by traditional method, operate simpler, test speed is faster, avoid repeatedly retest operation, test result repeatability error is little, test result is stable, and owing to part to be measured needs not be at the plane wave illumination of test antenna, therefore, therebetween distance can less than far field distance required in legacy test system, thus simplifying test system structure, reduce system dimension, it is particularly suited for wireless terminal performance and detects in the high-speed traffic performance of production line.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, for instance two, three etc., unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in this utility model as the case may be.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in one or more embodiments in office or example in an appropriate manner.Additionally, when not conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out combining and combining by those skilled in the art.
Although above it has been shown and described that embodiment of the present utility model, it is understandable that, above-described embodiment is illustrative of, it is not intended that to restriction of the present utility model, above-described embodiment can be changed in scope of the present utility model, revises, replace and modification by those of ordinary skill in the art.
Claims (9)
1. the test system of a wireless terminal, it is characterised in that including:
Measured piece, described measured piece is wireless terminal；
Shielding case body, described shielding case body inwall includes reflecting part and absorbent portion, and described reflecting part at least surface is metal, and for the wireless signal of described Radioterminal Transmit is totally reflected, described absorbent portion is provided with absorbing material, for radio wave absorbing；
Test antenna, for carrying out radio communication with described measured piece；
Absorbing screen, the material of described absorbing screen is absorbing material, and described absorbing screen is arranged between described measured piece and described test antenna, for radio wave absorbing；And
Described measured piece, the corresponding same spheroid of the position relationship of described test antenna and described reflecting part, wherein, described measured piece and described test antenna are separately positioned in two focuses of described spheroid, and described reflecting part is arranged on the ellipsoid of described spheroid.
2. the test system of wireless terminal as claimed in claim 1, it is characterized in that, described measured piece is arranged on the first focus of described spheroid, described test antenna is arranged on the second focus of described spheroid, on described spheroid major axis, the first summit is perpendicular to the plane of described spheroid major axis to the arbitrfary point between described second focus, and by described ellipsoid from described first summit to described plane partly as described reflecting part, by described shielding case body inwall except described reflecting part partly as described absorbent portion, wherein, described first summit is the end points of the major axis of described spheroid, and the distance between described first summit and described first focus is less than the half of described spheroid long axis length.
3. the test system of wireless terminal as claimed in claim 1, it is characterized in that, described measured piece is arranged on the first focus of described spheroid, described test antenna is arranged on the second focus of described spheroid, on described spheroid major axis, the first summit is perpendicular to the first plane of described spheroid major axis to the first arbitrfary point between described second focus, on described spheroid major axis, the first summit is perpendicular to the second plane of described spheroid major axis to the second arbitrfary point between described first focus, and by the first plane described in described ellipsoid and between described second plane partly as described reflecting surface, by described shielding case body inwall except described reflecting part partly as described absorbent portion, wherein, described first summit is the end points of the major axis of described spheroid, and the distance between described first summit and described first focus is less than the half of described spheroid long axis length, distance between described first arbitrfary point and described first summit is more than the distance between described second arbitrfary point and described first summit.
4. the test system of wireless terminal as claimed in claim 3, it is characterised in that wherein,
Described first plane is equal to the distance of described first focus with described second plane to the distance of described first focus；
Or described first plane is equal to the spherical distance of the plane being perpendicular to described major axis at described first focus place with described second plane to the spherical distance of the plane being perpendicular to described major axis at described first focus place.
5. the test system of wireless terminal as claimed in claim 4, it is characterised in that described first plane to the spherical distance of described second plane more than a times of the wavelength corresponding to minimum frequency in test frequency range.
6. the test system of the wireless terminal as described in any one of claim 1-5, it is characterised in that described reflecting part is the inwall of described shielding case body.
7. the test system of wireless terminal as claimed in claim 1, it is characterised in that described absorbing screen is arranged on the midpoint of two focus lines of described spheroid.
8. the test system of wireless terminal as claimed in claim 1, described absorbing screen is circular or polygon, and the external diameter of a circle of described absorbing screen is not less than λ/2, and wherein, described λ is the wavelength in test frequency range corresponding to minimum frequency.
9. the test system of wireless terminal as claimed in claim 1, it is characterised in that also include:
Test instrumentation, described test instrumentation is connected with described test antenna, for detecting the wireless signal that described test antenna receives, and/or detects the wireless signal that described test antenna is launched.
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| CN106841825A (en) * | 2017-01-03 | 2017-06-13 | 北京环境特性研究所 | A kind of near field antenna beam steering system based on suction ripple cavity configuration |
| CN107566052A (en) * | 2016-06-30 | 2018-01-09 | 是德科技股份有限公司 | For characterizing the compact system of the Devices to test with integrated antenna array |
| US11750303B2 (en) | 2016-06-30 | 2023-09-05 | Keysight Technologies, Inc. | Compact system for characterizing a device under test (DUT) having integrated antenna array |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107566052A (en) * | 2016-06-30 | 2018-01-09 | 是德科技股份有限公司 | For characterizing the compact system of the Devices to test with integrated antenna array |
| CN107566052B (en) * | 2016-06-30 | 2021-10-15 | 是德科技股份有限公司 | Compact system for characterizing a device under test with an integrated antenna array |
| US11750303B2 (en) | 2016-06-30 | 2023-09-05 | Keysight Technologies, Inc. | Compact system for characterizing a device under test (DUT) having integrated antenna array |
| CN106841825A (en) * | 2017-01-03 | 2017-06-13 | 北京环境特性研究所 | A kind of near field antenna beam steering system based on suction ripple cavity configuration |
| CN106841825B (en) * | 2017-01-03 | 2020-08-04 | 北京环境特性研究所 | Near-field antenna beam control system based on wave-absorbing cavity structure |
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