WO2023216595A1 - 有源天线的测试*** - Google Patents

有源天线的测试*** Download PDF

Info

Publication number
WO2023216595A1
WO2023216595A1 PCT/CN2022/140353 CN2022140353W WO2023216595A1 WO 2023216595 A1 WO2023216595 A1 WO 2023216595A1 CN 2022140353 W CN2022140353 W CN 2022140353W WO 2023216595 A1 WO2023216595 A1 WO 2023216595A1
Authority
WO
WIPO (PCT)
Prior art keywords
test
aau
test antenna
antenna group
adjustment
Prior art date
Application number
PCT/CN2022/140353
Other languages
English (en)
French (fr)
Inventor
何森
许正一
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2023216595A1 publication Critical patent/WO2023216595A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/10—Radiation diagrams of antennas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/10—Radiation diagrams of antennas
    • G01R29/105—Radiation diagrams of antennas using anechoic chambers; Chambers or open field sites used therefor

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a test system for active antennas.
  • the antenna and RRU Remote Radio Unit
  • the relatively independent performances of the antenna and RRU do not affect each other, and their respective performances can be verified through independent tests.
  • the integrated active antenna is the integration of the antenna and the RRU.
  • interference factors such as electromagnetic coupling and active standing waves cannot be completely eliminated; on the other hand, the calibration and amplitude and phase weighting of the active antenna are performed through a link on each radio frequency channel.
  • the combination of a series of active devices is very different from the way in which passive antenna arrays perform amplitude and phase weighting through passive power dividing networks. Therefore, for 5G base stations that use massive MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) active antenna technology, the integrated OTA test method can effectively reflect its radiation performance indicators.
  • massive MIMO Multiple Input Multiple Output, Multiple Input Multiple Output
  • Embodiments of the present disclosure provide a test system for active antennas.
  • an active antenna testing system including: a turntable module equipped with an active antenna unit AAU to be tested to drive the AAU to rotate; a test antenna module including a test Antenna and adjustment components to adjust the pointing and polarization direction of the test antenna so that the test antenna is aligned with the radio frequency radiation direction of the AAU.
  • Figure 1 is a structural diagram of a test system for an active antenna according to an embodiment of the present disclosure
  • Figure 2 is a schematic structural diagram of a turntable module according to an embodiment of the present disclosure
  • Figure 3 is a schematic structural diagram of a test antenna module in an embodiment of the present disclosure
  • Figure 4 is a schematic front view of the overall structure of the OTA test solution in the embodiment of the present disclosure.
  • Figure 5 is a top view of OTA testing in an embodiment of the present disclosure.
  • the OTA (Over-the-Air Technology) test of the integrated active antenna requires near-field testing or far-field testing in a microwave anechoic chamber.
  • Near-field testing and far-field testing each have their own advantages and disadvantages.
  • the near-field test can give a 3D directional pattern in a single test and has high testing efficiency.
  • the current RF radiation test results obtained after near-far conversion are still different from the far-field test results.
  • Far-field testing is the most direct test method.
  • the incident wave is similar to a plane wave on the receiving surface, and the beamforming pattern of the integrated active antenna can be directly obtained.
  • OTA indicators such as EIRP (Effective Isotropic Radiated Power) and EIS (Equivalent Isotropic Sensitivity).
  • EIRP Effective Isotropic Radiated Power
  • EIS Equivalent Isotropic Sensitivity
  • FIG. 1 is a structural diagram of an active antenna test system according to an embodiment of the present disclosure. As shown in Figure 1, the system includes a turntable module 10 and a test system. Antenna module 20.
  • the turntable module 10 is equipped with an active antenna unit AAU (Active Antenna Unit) to be tested, which can drive the AAU to rotate.
  • AAU Active Antenna Unit
  • the AAU can be axially rotated along a fixed axis at different height positions.
  • the test antenna module 20 includes a test antenna and an adjustment component, which can adjust the pointing and polarization direction of the test antenna so that the test antenna is aligned with the radio frequency radiation direction of the AAU.
  • the AAU includes beams in multiple directions.
  • the pointing and polarization directions of the test antennas are adjusted so that the test antennas are aligned with the beam direction of the AAU.
  • the number of test antennas is the same as the number of AAU beams.
  • the receiving direction of the test antennas is The same radiation direction as the AAU beam.
  • the turntable module is equipped with an active antenna unit AAU to be tested to drive the AAU to rotate.
  • the test antenna module includes a test antenna and an adjustment component to adjust the pointing and polarization direction of the test antenna. , so that the test antenna is aligned with the radio frequency radiation direction of the AAU, the turntable module and the test antenna module can cooperate with each other in space, and at the same time can simulate the OTA indicator situation close to the actual communication between the user and the communication base station, solving the related technology
  • the technical problem of low efficiency in testing AAU has been improved by improving the OTA testing efficiency of multi-beam integrated active antennas.
  • the turntable module includes a horizontal driving component and a height driving component.
  • the horizontal driving component can drive the AAU to rotate in the horizontal direction; the height driving component can adjust the height of the AAU in the vertical direction.
  • the horizontal drive assembly includes: a product fixed platform, fixedly connected to the AAU; a bottom turntable, fixed to the turntable module; a transmission rod, connected between the product fixed platform and the bottom turntable, and connected to the product fixed platform It is connected with the bottom turntable to form a transmission connection mechanism, which drives the fixed platform of the product to rotate in the horizontal direction, thereby driving the AAU to rotate in the horizontal direction.
  • the height driving assembly includes: a product support rod, which supports the AAU in the vertical direction; a cylinder, which is connected to the product support rod and can adjust the height of the product support rod, thereby linking the vertical adjustment of the AAU. Height in straight direction.
  • the turntable module adopts the structure of cylinder and support rod to make the height adjustment smooth and precise.
  • FIG. 2 is a schematic structural diagram of a turntable module in an embodiment of the present disclosure.
  • the turntable module includes: a product fixing platform 10, a transmission rod 11, a support rod 12, a cylinder 13, a bottom turntable 14, and a product to be tested 15 (in this embodiment middle finger AUU), calibration horn antenna 16 and radio frequency connector 17.
  • the product fixed platform, transmission rod and bottom turntable are connected to form a transmission connection, which can drive the product fixed turntable to rotate horizontally.
  • the product support rod and cylinder combination can support height adjustment, power supply and control.
  • the component is connected to the bottom turntable, calibration horn antenna and RF connector; a standard antenna is used during the calibration horn antenna test process, and the standard antenna provides a reference signal during the test process.
  • the test antenna module includes a horizontal test component and a vertical test component.
  • the horizontal test component includes a first test antenna group in a horizontal direction and a first adjustment component.
  • the first adjustment component adjusts the pointing and polarization direction of the first test antenna group in the horizontal direction.
  • the first test antenna group includes a plurality of first test antennas. Receiving antennas, each first receiving antenna covers an angular range in the horizontal direction.
  • the vertical test component includes a second test antenna group in the vertical direction and a second adjustment component.
  • the second adjustment component adjusts the pointing and polarization direction of the second test antenna group in the vertical direction, wherein the second test antenna group includes multiple and two second receiving antennas, each of which covers a latitude range of the sphere.
  • the test antenna module can be adjusted in four dimensions: X, Z direction and test antenna pointing angle, making it easy to debug different products.
  • the first adjustment component includes: a first horizontal slide rail and a first horizontal angle adjustment slider, the first test antenna group is installed on the first angle adjustment slider, and the first angle adjustment slider is connected to the first angle adjustment slider.
  • the locking knob on the first slide rail cooperates to adjust the fixed position of the first test antenna group in the horizontal direction through the first slide rail.
  • the second adjustment component includes: a second slide rail in the vertical direction and a second angle adjustment slider in the vertical direction, the second test antenna group is installed on the second angle adjustment slider, the second angle adjustment slider The block cooperates with the locking knob on the second slide rail to adjust the fixed position of the second test antenna group in the vertical direction through the second slide rail.
  • the test antenna module also includes: a support column, a height adjustment rod, and an angle adjustment base.
  • the support column is fixed on the angle adjustment base.
  • the height adjustment rod is movably installed on the support column.
  • the second adjustment component is fixed on the height adjustment base.
  • the height adjustment rod is movably connected with the angle adjustment base.
  • FIG. 3 is a schematic structural diagram of the test antenna module in the embodiment of the present disclosure.
  • the test antenna module includes: support column 18, X-direction test antenna group 19, X-direction slide rail and angle adjustment slider 20, Z-direction test antenna group 21 , Z-direction slide rail and angle adjustment slider 22, height adjustment rod 23, and angle adjustment base 24.
  • the support column is fixed on the angle adjustment base
  • the height adjustment rod is movably mounted on the support column
  • the Z-direction slide rail is fixed on the height adjustment rod
  • the X-direction slide rail is movably connected to the Z-direction slide rail
  • the angle adjustment slider It is movably installed on the slide rail
  • the height adjustment rod is movably connected to the angle adjustment seat
  • the test antenna group is installed on the angle adjustment slider.
  • the X direction refers to the horizontal direction of the earth coordinate system
  • the Z direction refers to the vertical direction of the earth coordinate system.
  • the system also includes: radio frequency connectors, power supply and control components, external environment, test instruments, as well as the turntable module and test antenna module in the above embodiments.
  • the RF connector is connected to the calibration horn antenna, and the test instrument displays the test results obtained during the test, such as index values, etc.
  • the test environment also includes a dark room and absorbing materials.
  • Figure 4 is a schematic front view of the overall structure of the OTA test solution in the embodiment of the present disclosure.
  • the overall structure includes: anechoic chamber 1, absorbing material 2, product turntable module 3, AAU4, test antenna module 5, radio frequency connector 6, power supply and control components 7, external environment 8, and test instruments 9.
  • the test antenna module further includes: a first acquisition unit configured to simultaneously acquire M predetermined beam directions of the AAU when the M test antennas of the first test antenna group are aligned one by one with the M predetermined beam directions of the AAU.
  • the second acquisition unit is configured as N test antennas in the second test antenna group
  • the position of the test antenna can be adjusted on the X and Z direction slide rails.
  • the test antenna can be matched with the locking knob on the angle adjustment slider to adjust the direction and direction of the test antenna.
  • Polarization direction in a microwave anechoic chamber far-field measurement environment, quickly obtain the OTA indicators of the product under test based on the first test antenna group and the second test antenna group.
  • Figure 5 is a top view of OTA testing in an embodiment of the present disclosure.
  • the beam direction and range of angle of arrival (RoAoA) of the AAU are known.
  • the numbers of the first test antenna group and the second test antenna group are both 8 is an example.
  • test indicators such as TRP (total radiated power) and radiation pattern
  • a test antenna group composed of 8 receiving antennas is used in the X direction (horizontal direction) and Z direction (vertical direction)
  • it covers 8 different latitudes, covering 8 different angles in the X direction (corresponding to the longitude of the spherical coordinate system).
  • the tested AAU turntable only needs to rotate a single beam width in the X direction to obtain the horizontal slices of the AAU at 8 latitude positions on the Z axis. Radiation pattern will greatly improve the efficiency of radiation pattern testing.
  • i is any test antenna in the first test antenna group
  • j is any test antenna in the second test antenna group
  • the equivalent isotropic radiated power EIRP in each polarization direction will greatly save the test time of this indicator because the X and Z directions cover multiple test angles.
  • the zenith angle between the line connecting the origin to the test point P (the coordinate point of the test antenna in the spherical coordinate system) and the positive Z axis is ⁇ .
  • the projection line of the test point P on the xy plane is the orientation between the X axis and the line connecting the test antenna in the spherical coordinate system. The angle is
  • the product under test AAU When performing the test, the product under test AAU is placed on the turntable module.
  • the signal of the test antenna unit is provided by an external instrument for space electromagnetic radiation.
  • the AAU In the downlink test, the AAU is connected to the external environment through optical fiber.
  • the test control terminal (computer) ) respectively controls the AAU and external instruments to complete the signal transmission and reception process of the product and test antenna, and completes the test of automatic collection of the entire RF index data of the product under test.
  • the measurement results of the radio frequency radiation indicators of multiple beams can be obtained at one time through a single OTA measurement under far-field conditions, which is beneficial to improving the EIRP, TRP, and OTA sensitivity of the multi-beam integrated active antenna.
  • test efficiency of OTA indicators such as OTA reference sensitivity and radiation pattern.
  • this scenario simulation is close to the OTA indicator situation during communication between actual users and communication base stations, which can improve test efficiency and better reflect whether the radiation performance indicators such as beam directionality of the tested base station meet the expected OTA indicator requirements.
  • each of the above modules can be implemented through software or hardware.
  • it can be implemented in the following ways, but is not limited to this: the above modules are all located in the same processor; or the above modules can be implemented in any combination.
  • the forms are located in different processors.
  • the present disclosure includes a turntable module and a test antenna module.
  • the turntable module is equipped with an active antenna unit AAU to be tested to drive the AAU to rotate.
  • the test antenna module includes a test antenna and an adjustment component to adjust the direction and polarization of the test antenna. direction, so that the test antenna is aligned with the radio frequency radiation direction of the AAU.
  • the turntable module and the test antenna module can cooperate with each other in space. At the same time, they can simulate the OTA indicator situation close to the actual communication between the user and the communication base station, solving related problems.
  • the technical problem of low efficiency of technical testing AAU is improved, and the efficiency of OTA testing of multi-beam integrated active antennas is improved.
  • modules or steps of the present disclosure can be implemented using general-purpose computing devices, and they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices. , optionally, they may be implemented in program code executable by a computing device, such that they may be stored in a storage device for execution by the computing device, and in some cases, may be in a sequence different from that herein.
  • the steps shown or described are performed either individually as individual integrated circuit modules, or as multiple modules or steps among them as a single integrated circuit module. As such, the present disclosure is not limited to any specific combination of hardware and software.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

一种有源天线的测试***，包括：转台模组（10），装配有待测试的有源天线单元AAU，以驱动AAU转动；测试天线模组（20），包括测试天线和调节组件，以调节测试天线的指向和极化方向，以使测试天线对准AAU的射频辐射方向。

Description

有源天线的测试***
相关申请的交叉引用
本公开要求享有2022年05月12日提交的名称为“有源天线的测试***”的中国专利申请CN202210519039.9的优先权，其全部内容通过引用并入本公开中。
技术领域
本公开涉及通信领域，具体而言，涉及一种有源天线的测试***。
背景技术
相关技术中，基站天馈***的天线与RRU(Remote Radio Unit，遥控射频单元)是相互分离的，天线与RRU相对独立性能互不影响，其各自的性能可以通过独立测试进行检验。而一体化有源天线是天线与RRU的集成，一方面电磁耦合、有源驻波等干扰因素不能完全消除；另一方面，有源天线的校准及幅相加权是通过各个射频通道上的一系列有源器件配合完成的，与无源天线阵列通过无源的功分网络来进行幅相加权的方式差别很大。所以对于采用了大规模MIMO(Multiple Input Multiple Output，多输入多输出)有源天线技术的5G基站而言，一体化OTA测试方式才能有效反映其辐射性能指标。
发明内容
本公开实施例提供了一种有源天线的测试***。
根据本公开的一个方面，提供了一种有源天线的测试***，包括：转台模组，其装配有待测试的有源天线单元AAU，以驱动所述AAU转动；测试天线模组，其包括测试天线和调节组件，以调节所述测试天线的指向和极化方向，以使所述测试天线对准所述AAU的射频辐射方向。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本公开的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是根据本公开实施例的有源天线的测试***的结构图；
图2是本公开实施例中转台模组的结构示意图；
图3是本公开实施例中测试天线模组的结构示意图；
图4是本公开实施例中OTA测试方案整体结构的主视示意图；以及
图5是本公开实施例中进行OTA测试的俯视图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
一体化有源天线的OTA(空中下载技术，Over-the-Air Technology)测试是需要通过微波暗室中的近场测试或者远场测试方法进行测试的。近场测试和远场测试各有其优缺点，近场测试单次测试即可给出3D方向图，测试效率高，但目前通过近远转换后取得的射频辐射测试结果与远场测试结果仍有不小的差距，无法确保测试结果的准确性。远场测试是最直接的测试方式，在测试距离大于判断依据d＝2D^2/λ时，入射波在接收面上近似于平面波，可以直接获取到一体化有源天线的波束赋形方向图及EIRP(Effective Isotropic Radiated Power有效各向同性辐射功率)、EIS(Equivalent Isotropic Sensitivity，等效各向同性灵敏度)等OTA指标。但是远场测试中使用单个接收喇叭被测天线旋转一周才能获得天线辐射球面的一个切面，测试效率较低。尤其对于采用Massive MIMO的多波束一体化有源天线，其多个波束工作在不同方向，传统远场测试方法无疑会很费时费力，影响测试效率，这是其存在的缺点。
针对相关技术中存在的上述问题，提出了本公开的技术方案。
实施例1
在本实施例中提供了一种有源天线的测试***，图1是根据本公开实施例的有源天线的测试***的结构图，如图1所示，该***包括转台模组10以及测试天线模组20。
转台模组10装配有待测试的有源天线单元AAU(Active Antenna Unit)，可以驱动AAU转动。可选地，AAU可以在不同的高度位置沿固定轴进行轴向旋转。
测试天线模组20包括测试天线和调节组件，可以调节测试天线的指向和极化方向，以使测试天线对准AAU的射频辐射方向。
本实施例可以应用在远场测试的测试环境中。在一些实例中，AAU包括多个方向的波束，调节测试天线的指向和极化方向，以使测试天线对准AAU的波束方向，测试天线的数量与AAU波束的数量相同，测试天线的接收方向与AAU波束的辐射方向相同。
通过上述包括转台模组和测试天线模组***，转台模组装配有待测试的有源天线单元AAU以驱动AAU转动，测试天线模组包括测试天线和调节组件以调节测试天线的指向和极化方向，以使测试天线对准AAU的射频辐射方向，转台模组和测试天线模组可以在空间 相互配合，同时能够模拟接近于实际用户与通信基站之间通信时的OTA指标情况，解决了相关技术测试AAU的效率低的技术问题，提高了多波束一体化有源天线的OTA测试效率。
可选地，转台模组包括水平驱动组件和高度驱动组件，水平驱动组件可以驱动AAU在水平方向旋转；高度驱动组件可以调节AAU在竖直方向的高度。
在本实施例的一些实施方式中，水平驱动组件包括：产品固定平台，与AAU固定连接；底部转台，固定转台模组；传动杆，连接在产品固定平台和底部转台之间，与产品固定平台和底部转台连接组成传动连接机构，驱动产品固定平台在水平方向旋转，从而带动AAU在水平方向旋转。
在本实施例的一些实施方式中，高度驱动组件包括：产品支撑杆，其在竖直方向支撑AAU；气缸，其与产品支撑杆连接，可以调节产品支撑杆的高度，从而联动调节AAU在竖直方向的高度。
转台模组通过采用气缸和支撑杆的结构，使得高度调节平稳且精准。
图2是本公开实施例中转台模组的结构示意图，该转台模组包括：产品固定平台10、传动杆11、支撑杆12、气缸13、底部转台14、待测产品15(在本实施例中指AUU)、定标喇叭天线16以及射频接头17，产品固定平台、传动杆与底部转台连接组成传动连接，可以驱动产品固定转台水平旋转，产品支撑杆和气缸组合可以支持高度调节，电源和控制组件连接底部转台、校准喇叭天线和射频接头；定标喇叭天线测试过程中采用标准天线，标准天线在测试过程中提供参考信号。
在本实施例中的一些示例中，测试天线模组包括水平测试组件和竖直测试组件。水平测试组件包括水平方向的第一测试天线组和第一调节组件，第一调节组件在水平方向调节第一测试天线组的指向和极化方向，其中，第一测试天线组包括多个第一接收天线，每个第一接收天线覆盖水平方向的一个角度范围。竖直测试组件包括竖直方向的第二测试天线组和第二调节组件，第二调节组件在竖直方向调节第二测试天线组的指向和极化方向，其中，第二测试天线组包括多个第二接收天线，每个第二接收天线覆盖球面的一个纬度范围。
测试天线模组可在X、Z向和测试天线指向角度4个维度上调节，方便对不同产品进行调试。
可选地，第一调节组件包括：水平方向的第一滑轨和水平方向的第一角度调节滑块，第一测试天线组安装在第一角度调节滑块上，第一角度调节滑块与第一滑轨上的锁位旋钮相配合，从而通过第一滑轨上调节第一测试天线组的在水平方向的固定位置。
可选地，第二调节组件包括：竖直方向的第二滑轨和竖直方向的第二角度调节滑块，第二测试天线组安装在第二角度调节滑块上，第二角度调节滑块与第二滑轨上的锁位旋钮相配合，从而通过第二滑轨上调节第二测试天线组的在竖直方向的固定位置。
可选地，测试天线模组还包括：支撑柱、高度调节杆、角度调节底座，支撑柱固定在角度调节底座上，高度调节杆可移动地安装于支撑柱上，第二调节组件固定于高度调节杆上，高度调节杆可移动地与角度调节底座连接。
图3是本公开实施例中测试天线模组的结构示意图，测试天线模组包括：支撑柱18、X向测试天线组19、X向滑轨和角度调节滑块20、Z向测试天线组21、Z向滑轨和角度调节滑块22、高度调节杆23、角度调节底座24。支撑柱固定于角度调节底座上，高度调节杆可移动的装于支撑柱上，Z向滑轨固定于高度调节杆上，X向滑轨可移动地与Z向滑轨连接，角度调节滑块可移动地装于滑轨上，高度调节杆可移动地与角度调节座连接，角度调节滑块上安装测试天线组。其中，X向指地球坐标系的水平方向，Z向指地球坐标系的竖直方向。
在本实施例的一些实施方式中，该***还包括：射频接头、电源和控制组件、外部环境、测试仪表，以及上述实施例中的转台模组和测试天线模组。射频接头与定标喇叭天线连接，测试仪表显示测试过程中得到的测试结果，如指标值等，测试环境还包括暗室和吸波材料。
图4是本公开实施例中OTA测试方案整体结构的主视示意图，该整体结构包括：暗室1、吸波材料2、产品转台模组3、AAU4、测试天线模组5、射频接头6、电源和控制组件7、外部环境8、测试仪表9。
可选地，测试天线模组还包括：第一获取单元，被配置为在第一测试天线组的M个测试天线一一对准AAU的M个预定波束指向时，同时获取AAU的M个预定波束指向在水平方向的等效全向辐射功率EIRP，M为大于1的正整数；在一些示例中，M＝8；第二获取单元，被配置为在第二测试天线组的N个测试天线一一对准AAU的N个预定波束指向时，同时获取AAU的N个预定波束指向在竖直方向的等效全向辐射功率EIRP，N为大于1的正整数。在一些示例中，N＝8。
通过角度调节滑块与滑轨上的锁位旋钮相配合，可以在X和Z向滑轨上调节位置，测试天线与角度调节滑块上的锁位旋钮相配合，可以调节测试天线的指向和极化方向，在微波暗室远场测量环境下基于第一测试天线组和第二测试天线组快速获取被测产品的OTA指标。
图5是本公开实施例中进行OTA测试的俯视图，AAU的波束方向和到达角范围(Range of Angle of Arrival，RoAoA)已知，以第一测试天线组和第二测试天线组的数量均为8为例，在实际测试过程中，通过将X向天线组(水平方向的第一测试天线组)的8个测试天线一一对准待测AAU的8个预定波束指向，同时对准天线的极化方向，8个测试天线通过一次测量取数即可获取测试天线在8个预定方向的波束增益Gt，从而可以快速获取各个波 束的等效全向辐射功率：EIRP＝P in*Gt，P in为测试天线的输入功率，同样的对于OTA灵敏度等指标均有相同的效果。
同时对于TRP(total radiated power)和辐射方向图等测试指标，由于X向(水平方向)和Z向(竖直方向)采用了8个接收天线构成的测试天线组，因此在Z向覆盖了8个不同纬度，在X向覆盖了8个不同角度(对应球坐标系的经度)，被测AAU转台只需在X向旋转单个波束宽度即可获取AAU在Z轴8个纬度位置处的水平切面辐射方向图，会大幅提高辐射方向图测试效率。
在TRP指标的测试过程中，
Figure PCTCN2022140353-appb-000001
i为第一测试天线组中任一测试天线，j为第二测试天线组中任一测试天线，在辐射球面上的所有经度方向取N个点、所有纬度方向取M个点，先测量两个极化方向的等效全向辐射功率EIRP，由于X向和Z向覆盖了多个测试角度从而会大大节省该指标的测试时间。原点到测试点P(测试天线在球坐标系中的坐标点)的连线与正Z轴之间的天顶角为θ，测试点P在xy平面的投影线，与X轴之间的方位角为
Figure PCTCN2022140353-appb-000002
在执行测试时，将待测产品AAU放置于转台模组上，上行测试中测试天线机组的信号由外部仪表提供进行空间电磁辐射，下行测试中AAU通过光纤与外部环境连接，测试控制端(电脑)分别控制AAU和外部仪表完成产品和测试天线的信号发射和接收过程，完成被测试产品的整个射频指标数据自动采集的测试。
采用本实施例的方案，在远场条件下通过单次OTA测量即可以一次性获取多个波束的射频辐射指标的测量结果，有利于提高多波束一体化有源天线的EIRP、TRP、OTA灵敏度、OTA参考灵敏度及辐射方向图等OTA指标的测试效率。同时该场景模拟接近于实际用户与通信基站之间通信时的OTA指标情况，可以在提高测试效率的同时更好的反应出被测试基站的波束定向等辐射性能指标是否符合预期的OTA指标要求。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
本公开包括转台模组和测试天线模组，转台模组装配有待测试的有源天线单元AAU，以驱动AAU转动，测试天线模组包括测试天线和调节组件，以调节测试天线的指向和极化方向，以使测试天线对准AAU的射频辐射方向，转台模组和测试天线模组可以在空间相互配合，同时能够模拟接近于实际用户与通信基站之间通信时的OTA指标情况，解决了相关技术测试AAU的效率低的技术问题，提高多波束一体化有源天线的OTA测试效率。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计 算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (10)

  1. 一种有源天线的测试***，包括：
    转台模组，其装配有待测试的有源天线单元AAU，以驱动所述AAU转动；
    测试天线模组，其包括测试天线和调节组件，以调节所述测试天线的指向和极化方向，以使所述测试天线对准所述AAU的射频辐射方向。
  2. 根据权利要求1所述的***，其中，所述转台模组包括：
    水平驱动组件，其驱动所述AAU在水平方向旋转；
    高度驱动组件，其调节所述AAU在竖直方向的高度。
  3. 根据权利要求2所述的***，其中，所述水平驱动组件包括：
    产品固定平台，其与所述AAU固定连接；
    底部转台，其固定所述转台模组；
    传动杆，其连接在所述产品固定平台和所述底部转台之间，与所述产品固定平台和所述底部转台连接组成传动连接机构，驱动所述产品固定平台在水平方向旋转，从而带动所述AAU在水平方向旋转。
  4. 根据权利要求2所述的***，其中，所述高度驱动组件包括：
    产品支撑杆，其在竖直方向支撑所述AAU；
    气缸，其与所述产品支撑杆连接，以调节所述产品支撑杆的高度，从而联动调节所述AAU在竖直方向的高度。
  5. 根据权利要求1所述的***，其中，所述测试天线模组包括：
    水平测试组件，其包括水平方向的第一测试天线组和第一调节组件，所述第一调节组件在水平方向调节所述第一测试天线组的指向和极化方向，其中，所述第一测试天线组包括多个第一接收天线，每个第一接收天线覆盖水平方向的一个角度范围；
    竖直测试组件，其包括竖直方向的第二测试天线组和第二调节组件，所述第二调节组件在竖直方向调节所述第二测试天线组的指向和极化方向，其中，所述第二测试天线组包括多个第二接收天线，每个第二接收天线覆盖球面的一个纬度范围。
  6. 根据权利要求5所述的***，其中，所述第一调节组件包括：水平方向的第一滑轨和水平方向的第一角度调节滑块，所述第一测试天线组安装在所述第一角度调节滑块上，所述第一角度调节滑块与所述第一滑轨上的锁位旋钮相配合，以通过所述第一滑轨上调节所述第一测试天线组的在水平方向的固定位置。
  7. 根据权利要求5所述的***，其中，所述第二调节组件包括：竖直方向的第二滑轨和竖直方向的第二角度调节滑块，所述第二测试天线组安装在所述第二角度调节滑块上，所述第二角度调节滑块与所述第二滑轨上的锁位旋钮相配合，以通过所述第 二滑轨上调节所述第二测试天线组的在竖直方向的固定位置。
  8. 根据权利要求5所述的***，其中，所述测试天线模组还包括：支撑柱、高度调节杆、角度调节底座，所述支撑柱固定在所述角度调节底座上，所述高度调节杆可移动地安装于所述支撑柱上，所述第二调节组件固定于所述高度调节杆上，所述高度调节杆可移动地与所述角度调节底座连接。
  9. 根据权利要求5所述的***，其中，所述测试天线模组还包括：
    第一获取单元，被配置为在所述第一测试天线组的M个测试天线一一对准所述AAU的M个预定波束指向的情况下，同时获取所述AAU的M个预定波束指向在水平方向的等效全向辐射功率EIRP，M为大于1的正整数；和/或，
    第二获取单元，被配置为在所述第二测试天线组的N个测试天线一一对准所述AAU的N个预定波束指向的情况下，同时获取所述AAU的N个预定波束指向在竖直方向的等效全向辐射功率EIRP，N为大于1的正整数。
  10. 根据权利要求9所述的***，其中，M＝8，N＝8。
PCT/CN2022/140353 2022-05-12 2022-12-20 有源天线的测试*** WO2023216595A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210519039.9A CN117092416A (zh) 2022-05-12 2022-05-12 有源天线的测试***
CN202210519039.9 2022-05-12

Publications (1)

Publication Number Publication Date
WO2023216595A1 true WO2023216595A1 (zh) 2023-11-16

Family

ID=88729568

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/140353 WO2023216595A1 (zh) 2022-05-12 2022-12-20 有源天线的测试***

Country Status (2)

Country Link
CN (1) CN117092416A (zh)
WO (1) WO2023216595A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117388588B (zh) * 2023-12-11 2024-03-01 中国电子科技集团公司第二十九研究所 一种vhf或uhf频段宽波束天线方向图的工程测量***

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170222735A1 (en) * 2016-01-29 2017-08-03 Anritsu Corporation Massive-mimo antenna measurement device and method of measuring directivity thereof
CN107255756A (zh) * 2017-07-02 2017-10-17 中国航空工业集团公司雷华电子技术研究所 一种相控阵天线近场方向图并行测试***及测试方法
CN110418364A (zh) * 2019-08-30 2019-11-05 京信通信技术(广州)有限公司 Ota测试***及校准、测试方法和装置
CN209821290U (zh) * 2018-11-21 2019-12-20 上海益麦电磁技术有限公司 一种基于3d探头阵列的紧缩场天线测试装置
CN210894514U (zh) * 2019-05-29 2020-06-30 成都天成电科科技有限公司 一种相控阵天线测试***
US20210341528A1 (en) * 2018-10-09 2021-11-04 Emite Ingenieria S.L. Test system for compact multi-band, near-field to far-field and direct far-field
US20210405103A1 (en) * 2020-06-30 2021-12-30 The Board Of Regents Of The University Of Oklahoma Multipurpose millimeter-wave radio frequency system and methods of use
CN113890637A (zh) * 2021-08-26 2022-01-04 广东工业大学 一种毫米波有源天线ota测试***及方法、校准***及方法
CN114124250A (zh) * 2020-08-31 2022-03-01 华为技术有限公司 一种毫米波终端设备的射频一致性测试***

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170222735A1 (en) * 2016-01-29 2017-08-03 Anritsu Corporation Massive-mimo antenna measurement device and method of measuring directivity thereof
CN107255756A (zh) * 2017-07-02 2017-10-17 中国航空工业集团公司雷华电子技术研究所 一种相控阵天线近场方向图并行测试***及测试方法
US20210341528A1 (en) * 2018-10-09 2021-11-04 Emite Ingenieria S.L. Test system for compact multi-band, near-field to far-field and direct far-field
CN209821290U (zh) * 2018-11-21 2019-12-20 上海益麦电磁技术有限公司 一种基于3d探头阵列的紧缩场天线测试装置
CN210894514U (zh) * 2019-05-29 2020-06-30 成都天成电科科技有限公司 一种相控阵天线测试***
CN110418364A (zh) * 2019-08-30 2019-11-05 京信通信技术(广州)有限公司 Ota测试***及校准、测试方法和装置
US20210405103A1 (en) * 2020-06-30 2021-12-30 The Board Of Regents Of The University Of Oklahoma Multipurpose millimeter-wave radio frequency system and methods of use
CN114124250A (zh) * 2020-08-31 2022-03-01 华为技术有限公司 一种毫米波终端设备的射频一致性测试***
CN113890637A (zh) * 2021-08-26 2022-01-04 广东工业大学 一种毫米波有源天线ota测试***及方法、校准***及方法

Also Published As

Publication number Publication date
CN117092416A (zh) 2023-11-21

Similar Documents

Publication Publication Date Title
US20210250107A1 (en) Methods and apparatuses for testing wireless communication to vehicles
KR102481050B1 (ko) 어레이 안테나의 총 복사 전력을 측정하기 위한 방법, 장치 및 시스템
US20180212695A1 (en) Systems and methods for performing multiple input, multiple output (mimo) over-the-air testing
US10684318B1 (en) System and method for testing analog beamforming device
US8502546B2 (en) Multichannel absorberless near field measurement system
US20070285322A1 (en) Multichannel absorberless near field measurement system
WO2023216595A1 (zh) 有源天线的测试***
Li et al. Virtual antenna array with directional antennas for millimeter-wave channel characterization
CN110149126A (zh) 一种3d-mimo***的波束赋形方法及波束赋形装置
Kayani et al. Reconfigurable cellular base station antenna consisting of parasitic radiators
CN108663577A (zh) 一种多探头球面近场交叉极化校正方法
Kornaros et al. A novel model for direction finding and phase center with practical considerations
CN113573349B (zh) 毫米波通信设备的性能测试***及方法
CN106291145A (zh) 无线终端的测试***
Li et al. On probe weighting for massive MIMO OTA testing based on angular spectrum similarity
Pannala Feasibility and challenges of over-the-air testing for 5G millimeter wave devices
Fordham An introduction to antenna test ranges, measurements and instrumentation
Pajusco et al. Massive antenna array for space-time channel sounding
CN112034264A (zh) 一种多探头紧缩场天线测试***和生成方法
Pogorzelski Experimental demonstration of the extended probe instrument calibration (EPIC) technique
US11982699B2 (en) Over-the-air testing of millimeter wave antenna receiver arrays
Tang et al. Efficient Angle Calibration Method for Peak Beam Measurements in Transmitarray-Based Compact Antenna Test Range
CN113252999A (zh) 天线平面近场测试方法
CN112511200A (zh) 一种模拟3d散射空间耦合衰落相关信道传播特性的方法
CN110531176A (zh) 一种有源天线trp快速测量方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22941529

Country of ref document: EP

Kind code of ref document: A1