WO2010075753A1 - 接收灵敏度性能测试方法和系统 - Google Patents

接收灵敏度性能测试方法和系统 Download PDF

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Publication number
WO2010075753A1
WO2010075753A1 PCT/CN2009/076072 CN2009076072W WO2010075753A1 WO 2010075753 A1 WO2010075753 A1 WO 2010075753A1 CN 2009076072 W CN2009076072 W CN 2009076072W WO 2010075753 A1 WO2010075753 A1 WO 2010075753A1
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Prior art keywords
wireless data
test
data terminal
receiving sensitivity
antenna
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PCT/CN2009/076072
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English (en)
French (fr)
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WO2010075753A8 (zh
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禹忠
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中国广东省深圳市
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Publication of WO2010075753A1 publication Critical patent/WO2010075753A1/zh
Publication of WO2010075753A8 publication Critical patent/WO2010075753A8/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/29—Performance testing

Definitions

  • the test of the receiving sensitivity of the whole machine can objectively reflect the final transmitting performance and receiving performance of the wireless data terminal. Therefore, the radio frequency performance testing of the wireless data terminal is receiving more and more attention.
  • the receiving sensitivity performance of the wireless data terminal is tested: one is to determine the receiving sensitivity performance of the antenna, and focus on testing the receiving sensitivity performance of the wireless data terminal from the radiation aspects of the antenna, such as gain, efficiency, and direction of the wireless data terminal antenna.
  • This test method is called passive test, and the other is to test the spatial RF performance of wireless data terminals such as receiving sensitivity performance in a specific microwave dark room.
  • This test method is called active test.
  • the RF performance test mainly tests the RF performance of the wireless data terminal in the cable connection mode.
  • the spatial RF performance of the wireless data terminal there is no clear regulation in the FTA test, but over the air (Over The Air) , OTA) testing just happens to make up for the shortcomings of FTA testing in this area.
  • the manufacturer of the wireless data terminal needs to have a clear understanding of the receiving sensitivity performance of the produced wireless data terminal, and needs various measures to improve the transmitting and receiving indicators of the wireless data terminal radiation, and receive the wireless data with poor sensitivity performance.
  • the terminal will bring a lot of inconvenience to the user, especially when using the laptop's external or built-in wireless data terminal for data communication, because the active components such as the notebook's main board and display are close to the antenna of the wireless data terminal, this will be reduced.
  • Wireless The transmission and reception performance of the data terminal, the transmission and reception performance of the external radiation of the external or built-in wireless data terminal will be reduced. Therefore, in the development of wireless data terminals, the impact of the transmission and reception performance of the external or built-in wireless data terminal of the notebook should be quantitatively measured, and the optimized design should be implemented to reduce the reduction of the transmission performance and the reception performance, that is, reduce the components of the notebook. Antenna electromagnetic coupling effect with an external or built-in wireless data terminal. Where the transmission parameters include the total radiated power
  • Receive parameters include Total Radiated Sensitivity (TRS).
  • the TRS of the mobile terminal can reflect the reception sensitivity of the wireless data terminal in the entire radiation sphere, which reflects the reception sensitivity of the wireless data terminal.
  • the TRS is related to the conduction sensitivity of the wireless data terminal and the reception sensitivity performance of the antenna.
  • the formula (1) is a continuous integral of the test sphere. It can not be used in the actual test. It can only be explained theoretically.
  • the formula (2) is a discrete addition of the spherical surface, which is more implementable:
  • the equivalent omnidirectional received power defines the available antenna output power, for example, each polarization reaches an acceptable threshold, ⁇ is the solid angle describing the direction, / is the frequency, and is the orthogonal pole Angle parameter.
  • N and ⁇ are multiple sampling intervals for ⁇ and ⁇ . and ⁇ ⁇ ⁇ p m is the measured angle, EIS e ( ⁇ ⁇ , ⁇ ] is the angle, [Phi] equivalent] full diversity of test point values to the horizontal polarization received power in milliwatts ⁇ ⁇ is the angle, The equivalent omnidirectional received power vertical polarization component value of the test point of ⁇ ⁇ , in milliwatts.
  • the devices and methods for measuring TRP are for voice mode, and do not involve laptop external or built-in wireless data terminals.
  • the main main objective of the present invention is to provide a receiving and receiving sensitivity sensitivity performance performance 1100 test for one type of improvement.
  • the test plan in order to solve the problem of the above-mentioned problem in the middle of the relevant technical skills, to at least one of the above. .
  • the method for measuring the sensitivity of the sensitivity of the receiving and receiving sensitivity is included in the method:
  • the pen-free note book has no wireless line number data of the computer brain according to the final terminal end of the test mode model;; the antenna antenna line with no wireless line number data as the original source
  • the receiving and receiving power rate at the pilot point of the collection test is collected, and the total total work of the equipment to be tested is obtained.
  • the power rate is connected to receive the sensitive sensitivity. .
  • the structure of the pen-making note book, the electric computer brain placement method package includes:: measuring the measurement and fixing the fixed pen note book open and close to the pre-determined 2200 folder Corner angle;; structure pen writing notes notebook computer wireless brainless data based on the terminal end of the test model model package includes: in the end of the wireless line number data terminal end If the external antenna is not connected to the terminal end of the wireless data, the antenna antenna of the terminal end of the wireless wireless data connection will be vertically vertical, or the water level will be flat.
  • the wireless antenna data is not perpendicular to the bottom surface of the notebook computer, and is connected to the external computer cable and the pen notebook computer. Brain protection The predetermined distance is separated. .
  • the received power collected at each test point includes: a horizontal polarization component and a vertical polarization component.
  • the process of obtaining the power receiving sensitivity of the device to be tested is specifically: obtaining the total receiving sensitivity at each test point by using formula (1), and then for each The total receiving sensitivity at the test point is normalized:
  • TRS is the total receiving sensitivity at the current test point, 0 and is the measurement angle
  • EIS ⁇ is the horizontal polarization component and the vertical polarization component respectively, which is the stereo direction angle of the current test point in the spherical coordinate system, / is to be Measuring the current operating frequency of the device; obtaining the total receiving sensitivity of the device under test by formula (2):
  • N and M are the multiple sampling intervals for 0 and respectively, and are the horizontal polarization components of the received power of the test points with the measured angles of % and %, and E 3 ⁇ 4, %)
  • E 3 ⁇ 4, % is the current operating frequency of the device under test.
  • a receiving sensitivity performance testing system is provided.
  • the receiving sensitivity performance testing system comprises: a notebook wireless data terminal test turntable for rotating the wireless data terminal according to a predetermined direction and a predetermined angle, measuring the opening and closing angle of the notebook computer, and externally connecting the wireless data terminal and the notebook computer Measurement between distances; full anechoic chamber, used to provide testing environment for wireless data terminals; spherical coordinates Selecting test points in the spherical coordinate system; spherical placement system for controlling the angular position of the wireless data terminal and the measuring antenna in the spherical coordinate system; measuring antenna for collecting the wireless data terminal at the test point under the control of the spherical placement system The received power at the location, wherein the wireless data terminal operates and the data mode; and the processing unit is configured to obtain a total power receiving sensitivity of the device to be tested according to the received power at the test point.
  • the notebook wireless data terminal test turntable is specifically configured to: construct a notebook computer placement method, including: measuring and fixing the notebook opening and closing to a predetermined angle; the test model of the wireless data terminal constructing the notebook computer comprises: externally connecting to the wireless data terminal In the case of a wireless data terminal, the antenna of the external wireless data terminal is vertical or horizontal to the bottom of the notebook computer; when the wireless data terminal is a built-in wireless data terminal, the antenna of the built-in wireless data terminal is perpendicular to the bottom surface of the notebook computer, and Keep a predetermined distance from the notebook via an external cable.
  • the measuring antenna is a dual polarized antenna.
  • the received power collected at each test point includes a horizontal polarization component and a vertical polarization component.
  • the measuring antenna obtains the total receiving sensitivity at each test point by formula (1), and then normalizes the total receiving sensitivity at each test point:
  • TRS is the total receiving sensitivity at the current test point
  • 0 is the measured angle
  • EIS ⁇ is the horizontally polarized component and the vertically polarized component, respectively, which is the current test point.
  • the stereo direction angle in the spherical coordinate system, / is the current operating frequency of the device under test.
  • the processing unit obtains the total receiving sensitivity of the device under test by formula (2): Where TRS is the total receiving sensitivity of the device under test, N and M are the multiple sampling intervals for 0 and respectively, and are the horizontal polarization components of the received power of the test points with the measured angles of % and %, and E 3 ⁇ 4, %) To measure the vertical polarization component of the received power of the test points of angle % and /, / is the current operating frequency of the device under test.
  • the wireless data terminal of the notebook is measured by constructing the measurement model, and the TRP measurement scheme existing in the related art does not fully reflect the influence of the electromagnetic coupling of the wireless data terminal and the antenna in the data mode, thereby causing The problem of inaccurate test results can truly reflect the influence of the coupling of various components of the notebook wireless data terminal in the data mode on the receiving sensitivity performance of the wireless data terminal, and is easy to use.
  • FIG. 1 is a flow chart of a receiving sensitivity performance testing method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a notebook computer coordinate system used in a receiving sensitivity performance testing method according to an embodiment of the method of the present invention
  • FIG. 3 is a schematic diagram of sampling by changing a relative angle of a terminal and a measuring antenna in a spherical coordinate system according to an embodiment of the present invention
  • FIG. 4 is a flow chart showing an example of processing of a receiving sensitivity performance testing method according to an embodiment of the method of the present invention
  • FIG. 5 is a schematic diagram of placement of a receiver sensitivity performance test method in performing a test process in accordance with an embodiment of the method of the present invention. detailed description
  • the present invention provides an improved receiving sensitivity performance test.
  • it is necessary to construct a test mode of a notebook computer and a wireless data terminal of the notebook computer; after constructing the test model, construct a spherical coordinate system with the antenna of the wireless data as the origin, and on the spherical surface The test point is selected in the coordinate system; the test model is placed in the full anechoic chamber environment, so that the wireless data is finally operated in the data mode, and the received power at the test point is collected in the spherical coordinate system by the measuring antenna, and thus the test is obtained.
  • the total power receiving sensitivity of the device is necessary to construct a test mode of a notebook computer and a wireless data terminal of the notebook computer; after constructing the test model, construct a spherical coordinate system with the antenna of the wireless data as the origin, and on the spherical surface The test point is selected in the coordinate system; the test model is placed in the full anechoic chamber environment, so that the wireless data is finally operated in the data mode
  • FIG. 1 is a flowchart of a receiving sensitivity performance testing method according to an embodiment of the present invention. As shown in FIG. 1, the receiving sensitivity performance testing method of the present invention includes the following steps:
  • Step S102 adjusting a notebook test turntable, and constructing a test model of the notebook wireless data terminal.
  • the laptop in the model is opened at a certain angle, that is, the notebook is opened and closed to a predetermined angle.
  • the wireless data terminal is a built-in wireless data terminal
  • the antenna of the built-in wireless data terminal should be vertically or horizontally parallel to the bottom surface of the notebook.
  • the wireless data terminal is an external wireless data terminal
  • the antenna of the external wireless data terminal should be perpendicular to the bottom surface of the notebook and kept at a certain distance from the notebook computer through an external cable.
  • Step S104 Construct a spherical coordinate system with the antenna of the wireless data terminal as an origin (the coordinate system of the X-axis, the Y-axis, and the Z-axis is established with the antenna as the origin), and select a test point in the spherical coordinate system.
  • FIG. 2 A schematic diagram of a notebook computer coordinate system used in the receiving sensitivity performance testing method according to an embodiment of the method of the present invention is shown in FIG. 2.
  • Step S106 placing the test model in a full anechoic chamber environment, so that the wireless data terminal works in the data mode, and collecting the received power at the test point in the spherical coordinate system by using the measuring antenna, it is necessary to explain that at each test point
  • the total radiated power collected includes a horizontally polarized component and a vertically polarized component, and thereby the total power receiving sensitivity of the device under test is obtained.
  • the measuring antenna can be a dual polarized antenna.
  • FIG. 3 is a schematic diagram of sampling by changing a relative angle of a terminal and a measuring antenna in a spherical coordinate system according to an embodiment of the present invention.
  • the model holding the terminal can be rotated horizontally, and the probe antenna can move the sampling in the plane perpendicular to the horizontal plane to obtain the sampling result of each test point.
  • the probe antenna can move the sampling in the plane perpendicular to the horizontal plane to obtain the sampling result of each test point.
  • other methods of rotation and/or movement can be used, no longer here - enumerated.
  • EIS e ( ; f) ⁇ ⁇ ⁇ ! TRS is the total receiving sensitivity at the current test point, 0 is the measured angle, and EIS ⁇ is the horizontally polarized component and the vertically polarized component, respectively, which is the current test point.
  • the stereo direction angle in the spherical coordinate system, / is the current operating frequency of the device under test.
  • N and M are the multiple sampling intervals for 0 and respectively, and are the horizontal polarization components of the received power of the test points with the measured angles of % and %, and E 3 ⁇ 4, %)
  • E 3 ⁇ 4, % is the current operating frequency of the device under test.
  • Fig. 4 is a flow chart showing an example of processing of the receiving sensitivity performance testing method according to an embodiment of the method of the present invention. As shown in FIG. 4, the receiving sensitivity performance testing method of the present invention may include the following steps:
  • Step S1 setting the angle and distance of the laptop and the external or built-in wireless data terminal in the data mode to construct a test system.
  • the notebook is turned on with a certain angle between the screen side and the keyboard side, for example: the above angle may be 110. ⁇ 2. , and make it at an angle with the vertical axis, for example: The above angle can be 20. ⁇ 2. .
  • the wireless data terminal antenna should be parallel or horizontally parallel to the bottom surface of the notebook; when the wireless data terminal is an external wireless data terminal, the external wireless data terminal antenna should be perpendicular to the bottom surface of the notebook, and through the external cable and notebook Keep the computer at a certain distance, for example, keep a distance of 20cm from the laptop.
  • the notebook is tested under normal power-on state, and the notebook's scan function, monitor mode, screen saver mode, and power save mode need to be turned off.
  • the screen background brightness needs to be set to maximum and set to battery-powered. .
  • two positioning systems can be defined: a combined shaft system and a distributed shaft system, wherein the combined shaft system means that the two rotating shafts are independent of each other, as shown in FIG.
  • the combined shaft system means that the two rotating shafts are independent of each other, as shown in FIG.
  • an axis locator can be added to the ⁇ axis positioner, and the wireless data terminal rotates around two axes at the same time.
  • the two rotating shafts of the distributed shaft system are combined with each other.
  • the measuring antenna can be rotated about the x-axis and the wireless data terminal can be rotated about the axis.
  • Step S3 setting the wireless link of the notebook computer and putting it in a normal working state to satisfy the test condition.
  • the wireless data terminal should select three high-, medium-, and low-channel links in all frequency bands for testing in the supported frequency bands, and for the wireless antenna terminal of the telescopic antenna type,
  • the antenna is tested in both extended and contracted states.
  • the relative sensitivity test is also performed on the intermediate channel at the maximum interval. The relative sensitivity test requires finding the measurement point of the best receiving sensitivity of the complete test channel, adjusting the position of the positioner and the polarization of the test to be consistent with the best receiving sensitivity point, and adjusting the output power of the base station simulator to be greater than the optimal receiving sensitivity. + 5dB, test the sensitivity of the wireless data terminal in the intermediate channel under this power condition, and the sensitivity of the intermediate channel should not exceed the error rate/frame error rate of the complete test channel.
  • Step S4 continuously sending the UP power control command to the notebook computer until the error rate of the notebook computer reaches a certain target value (for example, the bit error rate reaches a target value of at least 20000 bits 1.0% ⁇ 0.2%), and the agreed maximum power is achieved. After that, start sending data.
  • a certain target value for example, the bit error rate reaches a target value of at least 20000 bits 1.0% ⁇ 0.2%), and the agreed maximum power is achieved. After that, start sending data.
  • Step S5 performing sampling test at the set test point, respectively acquiring the equivalent omnidirectional received power horizontal polarization component E (, %) and the equivalent omnidirectional receiving power vertical polarization component EIS in the horizontal and vertical directions respectively
  • AEIS ⁇ 3 ⁇ 4 EISstd t - ElSnstd, ( 3 ) Among them, it is a standard sensitive measurement, which is a power measurement of non-standard modulation, and ⁇ is the number of reference measurement points.
  • Step S6 using the formula (1) and the formula (2) for the data measured at each test point, obtain the spatial RF performance reception sensitivity index TRS of the mobile terminal device or other wireless communication products.
  • the present invention has been described above by way of a folding notebook computer, the present invention can also be constructed by constructing notebooks of other types of built-in or external wireless data terminals, the measurement method of which is similar to the above-described method, and will not be repeated here.
  • Embodiments of the present invention provide a receiving sensitivity performance testing system, including a notebook computer wireless data terminal test turntable, a full anechoic chamber, a spherical coordinate establishing and testing module, a spherical placement system, a wireless data terminal measuring antenna, and a processing unit.
  • a receiving sensitivity performance testing system including a notebook computer wireless data terminal test turntable, a full anechoic chamber, a spherical coordinate establishing and testing module, a spherical placement system, a wireless data terminal measuring antenna, and a processing unit.
  • the above modules are described in detail below:
  • Full anechoic chamber used to provide a test environment for wireless data terminals, which can fully isolate electromagnetic interference from the external environment, and the shielding effectiveness meets the requirements of EN50147-1 in the range of 800 Hz to 4 GHz, and the dead space of the full anechoic chamber Need to meet the test requirements.
  • a notebook wireless data terminal test turret In the full anechoic chamber, a notebook wireless data terminal test turret is provided, and the turntable has a fixed or moving goniometer and a range finder, wherein the notebook wireless data terminal test turret is used to rotate the wireless data according to a predetermined direction and a predetermined angle.
  • the terminal measures the opening and closing angle of the notebook computer, and measures the distance between the external wireless data terminal and the notebook computer.
  • the notebook computer needs to open a certain angle according to requirements, and uses the goniometer on the turntable for calibration.
  • the wireless data terminal antenna When the wireless data terminal is built-in, the wireless data terminal antenna should be vertical or horizontal to the bottom of the notebook; when the wireless data terminal is an external wireless data terminal, the antenna of the external wireless data terminal should be perpendicular to the bottom surface of the notebook, through the external cable and the notebook.
  • the computer keeps a certain distance and uses the rangefinder of the turntable for distance measurement.
  • the spherical coordinate establishing and testing module is configured to construct a spherical coordinate system with the antenna of the device to be tested as an origin, and select a test point in the spherical coordinate system.
  • the spherical coordinate establishing and testing module can establish a spherical coordinate system, and establish a spherical coordinate system defined by the x, y, and z axes for the wireless communication product, wherein the corner is the positive direction of the test point and the z-axis.
  • the angle of ⁇ is the angle between the positive X-axis and the projection point of the test point on the x and y planes, and the test coordinate points are selected in the spherical coordinate system.
  • a spherical placement system for controlling the angular position of the wireless terminal and the measuring antenna in a spherical coordinate system.
  • the final structure of the test environment is a mobile wireless data terminal/model and/or measurement antenna consisting of a support structure and a test placer for placing wireless data terminals and manipulating relative to the measurement antenna to cover the wireless A model of the entire spherical radiation of the data terminal, thus sampling at each test point.
  • the measuring antenna is used to receive the received power of the wireless terminal at the test point in the data mode under the control of the spherical placement system.
  • the measuring antenna is a dual-polarized antenna, and the dual-polarized antenna can obtain two orthogonal components of the electric field vector at each point on the spherical surface, and collects horizontal polarization components and vertical poles at each test point. The received power of the component.
  • the measuring antenna obtains the total receiving sensitivity at each test point by formula (1), and then normalizes the total receiving sensitivity at each test point:
  • TRS is the total receiving sensitivity at the current test point, and is the measured angle
  • EIS ⁇ is the horizontally polarized component and the vertically polarized component, respectively, for the current test point
  • the stereo direction angle in the spherical coordinate system, / is the current operating frequency of the device under test.
  • a processing unit configured to obtain a total power receiving sensitivity of the device under test according to the received power at the test point. Specifically, the processing unit obtains the total receiving sensitivity of the device to be tested by using formula (2):
  • TRS is the total receiving sensitivity of the device to be tested
  • N and M are respectively a plurality of sampling intervals of the sum
  • the horizontal polarization component of the receiving power of the test point with the measured angle of % and %, and E 3 ⁇ 4, %) is The vertical polarization component of the received power of the test point with the angle of % and / is measured, and / is the current operating frequency of the device under test.
  • the wireless data terminal may include a single mode terminal, and the single mode terminal includes Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) and Wideband Code Division Multiple Access (Wideband). Code Division Multiple Access (CDMA), Code Division Multiple Access (CDMA), Global System for Mobile Communication (GSM), Personal Wireless Access System (also known as PHS) , Bluetooth (BLUETOOTH), Wireless Local Area Network (WLAN), Global Positioning System (GPS), Radio Frequency Identity (RFID) and Worldwide Interoperability for Microwave Access , Wimax) and other communication systems or combinations thereof.
  • the external connection between the wireless data terminal and the notebook computer can be USB, Institute for Electrical and Electronic Engineers (IEEE) 1394, serial port or parallel port connection.
  • the wireless data terminal of the notebook is measured by constructing the measurement model, and the TRP measurement scheme existing in the related art does not fully reflect the electromagnetic coupling of the wireless data terminal and the antenna in the data mode.
  • the impact of the test result which leads to inaccurate test results, can truly reflect the true laptop wireless data terminal in data mode
  • the influence of the coupling of each component of the notebook on the receiving sensitivity performance of the wireless data terminal has high authenticity and is easy to use.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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Description

接收灵敏度性能测试方法和系统 技术领域
本发明涉及性能测试技术， 尤其涉及一种接收灵敏度性能测试方法和 系统。 背景技术
目前， 由于整机接收灵敏度性能的测试可以客观反映无线数据终端的 最终发射性能和接收性能， 所以， 无线数据终端射频性能测试受到越来越 多的关注， 在相关技术中， 主要有两种方法对无线数据终端的接收灵敏度 性能进行测试： 一种是从天线的接收灵敏度性能进行判定， 侧重从无线数 据终端天线的增益、 效率、 方向图等天线的辐射方面测试无线数据终端的 接收灵敏度性能， 这种测试方法称为无源测试， 另一种是在特定微波暗室 内， 测试无线数据终端的诸如接收灵敏度性能等的空间射频性能， 这种测 试方法称为有源测试。
目前， 只有通过全面型号认证（Full Type Approval, FTA )认证测试的 无线数据终端才能上市销售。 在 FTA测试中， 射频性能测试主要进行无线 数据终端在电缆连接模式下的射频性能测试， 至于无线数据终端整机的空 间射频性能， 在 FTA测试中没有明确的规定， 但空中下载（Over The Air, OTA )测试恰好能够弥补 FTA测试在这方面测试的不足。 同时， 无线数据 终端的生产厂家需要对所生产的无线数据终端的接收灵敏度性能有清楚的 了解， 并且需要通过各种措施来提高无线数据终端辐射的发射和接收指标， 接收灵敏度性能差的无线数据终端将给用户的使用带来诸多不便， 尤其在 使用笔记本电脑的外接或内置无线数据终端进行数据通信时， 由于笔记本 电脑的主板和显示屏等有源元件靠近无线数据终端的天线， 这将降低无线 数据终端的发射和接收性能， 外接或内置无线数据终端的整机辐射的发射 和接收性能都会降低。 因此， 在无线数据终端研发过程中， 应定量测量笔 记本对外接或内置无线数据终端的发射和接收性能的影响， 进行优化设计， 使得发射性能和接收性能降低幅度减小， 即减少笔记本的各元件和外接或 内置无线数据终端的天线电磁耦合效应。 其中， 发射参数包括总辐射功率
( Total Radiated Power, TRP ), 接收参数包括总辐射灵敏度 ( Total Radiated Sensitivity, TRS )。
移动终端的 TRS能够反映在整个辐射球面内， 无线数据终端的接收灵 敏度的情况， 其反映了无线数据终端整机接收灵敏度的情况。 TRS 与无线 数据终端的传导灵敏度和天线的接收灵敏度性能有关。 公式（ 1 )是对测试 球面的连续积分， 在实际测试中并不能使用， 仅能进行理论说明， 公式（2 ) 是对球面进行离散加和， 可实施性较强：
Figure imgf000004_0001
其中， 等效全向接收功率（EIS )定义了可用的天线输出功率， 例如， 每个极化都达到了可接收的门限， Ω为描述方向的立体角， /为频率， 和 为正交极化的角度参数。
Figure imgf000004_0002
其中， N和 Μ是对 Θ和 φ的多个采样间隔。 θη和 <pm是测量角， EISe (θι， φ] 为角度为 、 φ]的测试点的等效全向接收功率水平极化分量值，单位为毫瓦 ΕΙΞφ 为角度为 、 φ}的测试点的等效全向接收功率垂直极化分量值， 单位为毫瓦。 目前采用的空间射频性能中， TRP 测量的装置和方法都是针对语音模 式的， 并不涉及笔记本电脑外接或内置无线数据终端， 但是， 上述方案至 少存在如下问题： 没有充分反映数据模式下笔记本电脑的外接或内置无线 数据终端乃至于笔记本各元件和无线数据终端天线的电磁耦合的影响， 因 5 此， 采用目前的方案进行测量得到的结果并不准确。 发明内容
考考虑虑到到相相关关技技术术中中存存在在的的 TTRRPP测测量量方方案案没没有有充充分分反反映映数数据据模模式式下下无无线线 数数据据终终端端和和天天线线的的电电磁磁耦耦合合的的影影响响，， 从从而而导导致致测测试试结结果果不不准准确确的的问问题题而而提提 出出本本发发明明，， 为为此此，， 本本发发明明的的主主要要目目的的在在于于提提供供一一种种改改进进的的接接收收灵灵敏敏度度性性能能 1100 测测试试方方案案，， 以以解解决决相相关关技技术术中中存存在在的的上上述述问问题题至至少少之之一一。。
为为了了实实现现上上述述目目的的，， 根根据据本本发发明明的的一一个个方方面面，， 提提供供了了一一种种接接收收灵灵敏敏度度 性性能能测测试试方方法法。。
根根据据本本发发明明的的接接收收灵灵敏敏度度性性能能测测试试方方法法包包括括：： 构构造造笔笔记记本本电电脑脑放放置置方方 式式以以及及笔笔记记本本电电脑脑的的无无线线数数据据终终端端的的测测试试模模型型；； 以以无无线线数数据据终终的的天天线线为为原原
1155 点点构构建建球球面面坐坐标标系系，， 并并在在球球面面坐坐标标系系中中选选择择测测试试点点；； 将将测测试试模模型型放放置置在在全全 电电波波暗暗室室环环境境下下，， 使使无无线线数数据据终终在在数数据据模模式式下下工工作作，， 利利用用测测量量天天线线在在球球面面 坐坐标标系系中中采采集集测测试试点点处处的的接接收收功功率率，， 并并由由此此获获得得待待测测设设备备的的总总功功率率接接收收灵灵 敏敏度度。。
其其中中，， 构构造造笔笔记记本本电电脑脑放放置置方方式式包包括括：： 测测量量并并固固定定笔笔记记本本开开合合到到预预定定 2200 夹夹角角；； 构构造造笔笔记记本本电电脑脑的的无无线线数数据据终终端端的的测测试试模模型型包包括括：： 在在无无线线数数据据终终端端 为为外外接接无无线线数数据据终终端端的的情情况况下下，， 将将外外接接无无线线数数据据终终端端的的天天线线垂垂直直、、 或或者者水水 平平于于笔笔记记本本电电脑脑底底面面；； 在在无无线线数数据据终终端端为为内内置置无无线线数数据据终终端端的的情情况况下下，， 将将 内内置置无无线线数数据据终终端端的的天天线线垂垂直直于于笔笔记记本本电电脑脑底底面面，， 并并通通过过外外接接电电缆缆与与笔笔记记 本本电电脑脑保保持持预预定定距距离离。。
Figure imgf000005_0001
其中， 在每个测试点采集到的接收功率包括： 水平极化分量和垂直极 化分量。
其中， 在采集到水平极化分量和垂直极化分量之后， 获得待测设备的 功率接收灵敏度的处理具体为： 通过公式（1 )分别获得每个测试点处的总 接收灵敏度， 之后对每个测试点处的总接收灵敏度进行归一化：
Figure imgf000006_0001
其中， TRS为当前测试点处的总接收灵敏度， 0和 为测量角， EIS^ 分别为水平极化分量和垂直极化分量， 为当前测试点在球面坐标系 中的立体方向角， /为待测设备的当前工作频率； 通过公式（2 )获得待测 设备的总接收灵敏度：
Figure imgf000006_0002
其中， TRS为待测设备的总接收灵敏度， N和 M为分别对 0和 的多 个采样间隔， 为测量角为 和％的测试点的接收功率的水平极 化分量，和 E ¾,%)为测量角为 和％的测试点的接收功率的垂直极化分 量， /为待测设备的当前工作频率。
为了实现上述目的， 根据本发明的另一方面， 提供了一种接收灵敏度 性能测试系统。
根据本发明的接收灵敏度性能测试系统包括： 笔记本电脑无线数据终 端测试转台， 用于按照预定方向和预定角度旋转无线数据终端， 对笔记本 电脑开合角度进行测定， 并对外接无线数据终端和笔记本电脑之间距离进 行测量； 全电波暗室， 用于为无线数据终端提供测试的环境； 球面坐标建 球面坐标系中选择测试点； 球面放置系统， 用于在球面坐标系内控制无线 数据终端与测量天线的角度位置； 测量天线， 用于在球面放置系统的控制 下， 采集无线数据终端在测试点处的接收功率， 其中， 无线数据终端工作 与数据模式； 处理单元， 用于根据测试点处的接收功率获得待测设备的总 功率接收灵敏度。
其中， 笔记本电脑无线数据终端测试转台具体用于： 构造笔记本电脑 放置方式， 包括： 测量并固定笔记本开合到预定夹角； 构造笔记本电脑的 无线数据终端的测试模型包括： 在无线数据终端为外接无线数据终端的情 况下， 将外接无线数据终端的天线垂直、 或者水平于笔记本电脑底面； 在 无线数据终端为内置无线数据终端的情况下， 将内置无线数据终端的天线 垂直于笔记本电脑底面， 并通过外接电缆与笔记本电脑保持预定距离。
其中， 测量天线为双极化天线。
其中， 在每个测试点采集到的接收功率包括水平极化分量和垂直极化 分量。
其中， 测量天线通过公式（ 1 )分别获得每个测试点处的总接收灵敏度, 之后对每个测试点处的总接收灵敏度进行归一化：
+■
/ (Ω;/) ΕΙΞφ{β· !) 其中， TRS为当前测试点处的总接收灵敏度， 0和 为测量角， EIS^ 分别为水平极化分量和垂直极化分量， 为当前测试点在球面坐标系 中的立体方向角， /为待测设备的当前工作频率。 处理单元通过公式（2 ) 获得待测设备的总接收灵敏度：
Figure imgf000007_0001
其中， TRS为待测设备的总接收灵敏度， N和 M为分别对 0和 的多 个采样间隔， 为测量角为 和％的测试点的接收功率的水平极 化分量，和 E ¾,%)为测量角为 和％的测试点的接收功率的垂直极化分 量， /为待测设备的当前工作频率。
借助于本发明的技术方案， 通过构造测量模型对笔记本的无线数据终 端进行测量， 解决了相关技术中存在的 TRP测量方案没有充分反映数据模 式下无线数据终端和天线的电磁耦合的影响， 从而导致测试结果不准确的 问题， 可以真实地反映真笔记本电脑无线数据终端在数据模式下中笔记本 各元件耦合对无线数据终端的接收灵敏度性能的影响， 并且易于使用。
本发明的其它特征和优点将在随后的说明书中阐述， 并且， 部分地从 说明书中变得显而易见， 或者通过实施本发明而了解。 本发明的目的和其 他优点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结 构来实现和获得。 附图说明
图 1是根据本发明实施例的接收灵敏度性能测试方法的流程图； 图 2是根据本发明方法实施例的接收灵敏度性能测试方法中所采用的 笔记本电脑坐标系的示意图；
图 3是根据本发明实施例的在球面坐标系中通过改变终端与测量天线 的相对角度进行采样的示意图；
图 4是根据本发明方法实施例的接收灵敏度性能测试方法的处理实例 的流程图；
图 5是根据本发明方法实施例的接收灵敏度性能测试方法在执行测试 过程中放置示意图。 具体实施方式
在相关技术中， 存在 TRP测量方案不能充分反映数据模式下无线数据 终端和天线的电磁耦合的影响， 从而导致测试结果不准确的问题， 为此， 本发明提供了一种改进的接收灵敏度性能测试方案， 在本发明的技术方案 中， 需要构造笔记本电脑放置方式以及笔记本电脑的无线数据终端的测试 模型； 在构造好测试模型后， 以无线数据终的天线为原点构建球面坐标系， 并在球面坐标系中选择测试点； 将测试模型放置在全电波暗室环境下， 使 无线数据终在数据模式下工作， 利用测量天线在球面坐标系中采集测试点 处的接收功率， 并由此获得待测设备的总功率接收灵敏度。
以下结合附图对本发明的优选实施例进行说明， 应当理解， 此处所描 述的优选实施例仅用于说明和解释本发明， 并不用于限定本发明。
在以下的描述中， 为了解释的目的， 描述了多个特定的细节， 以提供 对本发明的透彻理解。 然而， 艮显然， 在没有这些特定细节的情况下， 也 可以实现本发明， 此外， 在不背离所附权利要求阐明的精神和范围的情况 本发明实施例提供了一种接收灵敏度性能测试方法， 图 1 是根据本发 明实施例的接收灵敏度性能测试方法的流程图， 如图 1 所示， 本发明接收 灵敏度性能测试方法包括以下步骤：
步骤 S102 , 调整笔记本电脑测试转台， 构造笔记本电脑无线数据终端 测试模型。 这里， 模型中笔记本电脑按照一定角度打开， 即测量并固定笔 记本开合到预定夹角， 当无线数据终端为内置无线数据终端时， 内置无线 数据终端的天线应垂直或者水平平行于笔记本电脑底面， 当无线数据终端 为外接无线数据终端时， 外接无线数据终端的天线应垂直于笔记本底面， 并通过外接电缆与笔记本电脑保持一定距离。 步骤 S104 , 以无线数据终端的天线为原点构建球面坐标系 （以天线为 原点建立 X轴、 Y轴、 Z轴的坐标系）， 并在球面坐标系中选择测试点。 根 据本发明方法实施例的接收灵敏度性能测试方法中所采用的笔记本电脑坐 标系的示意图如图 2所示。
步骤 S106 , 将测试模型放置在全电波暗室环境下， 使无线数据终端在 数据模式下工作， 利用测量天线在球面坐标系中采集测试点处的接收功率， 需要说明的是， 在每个测试点采集到的总辐射功率包括水平极化分量和垂 直极化分量， 并由此获得待测设备的总功率接收灵敏度。 其中， 测量天线 可以为双极化天线。
图 3是根据本发明实施例的在球面坐标系中通过改变终端与测量天线 的相对角度进行采样的示意图。 如图 3 所示， 持有终端的模型能够在水平 面旋转， 天线（probe antenna )能够在垂直于水平面的平面内， 延球面移动 采样， 从而得到每个测试点的采样结果。 当然， 还可以采用其它的旋转和 / 或移动的方式， 这里不再——列举。
在测试点采集到水平极化分量和垂直极化分量之后， 通过公式（1 )分 别获得每个测试点处的总接收灵敏度， 之后对每个测试点处的总接收灵敏 度按照公式（ 1 )进行归一化：
( 1 )
+■
EISe( ; f) ΕΙΞφ{β· !) 其中， TRS为当前测试点处的总接收灵敏度， 0和 为测量角， EIS^ 分别为水平极化分量和垂直极化分量， 为当前测试点在球面坐标系 中的立体方向角， /为待测设备的当前工作频率。
随后， 通过公式（2 )获得待测设备的总接收灵敏度： ( 2 )，
Figure imgf000011_0001
其中， TRS为待测设备的总接收灵敏度， N和 M为分别对 0和 的多 个采样间隔， 为测量角为 和％的测试点的接收功率的水平极 化分量，和 E ¾,%)为测量角为 和％的测试点的接收功率的垂直极化分 量， /为待测设备的当前工作频率。
下面将结合图 4, 对上述处理方案在实际应用当中的具体处理进行说 明， 图 4是根据本发明方法实施例的接收灵敏度性能测试方法的处理实例 的流程图。 如图 4所示， 本发明接收灵敏度性能测试方法可以包括以下步 骤：
步骤 S1 , 在数据模式下设置笔记本电脑和外接或内置无线数据终端角 度和距离， 构建测试系统。
具体地， 如图 5 所示， 打开笔记本电脑并使其屏幕侧和键盘侧之间处 于一定夹角， 例如： 上述夹角可以为 110。 ± 2。， 并使其与垂直轴之间处于 一定夹角， 例如： 上述夹角可以为 20。 ± 2。。 当无线数据终端为内置式时， 无线数据终端天线应垂直或者水平平行于笔记本底面； 当无线数据终端为 外接无线数据终端时， 外接无线数据终端天线应垂直于笔记本底面， 并通 过外接电缆与笔记本电脑保持一定距离，例如与笔记本电脑保持 20cm的距 离。 笔记本电脑保持在正常开机状态下进行测试， 并需要关闭笔记本电脑 的扫描功能、 监控模式、 屏保模式和省电模式， 此外， 还需要将屏幕背景 亮度设置为最大， 且将其设置为采用电池供电。
步骤 S2, 以无线数据终端天线所在位置为中心建立球面坐标系统， 并 选取测试点。
具体地， 基于球面测试方法， 可以定义两种定位系统： 组合轴系统和 分布轴系统， 其中， 组合轴系统是指两个旋转轴相互独立， 如图 3 所示， 例如， 可以在 Θ轴定位器基础上加装 ^轴定位器， 无线数据终端同时绕两个 轴旋转。 分布轴系统的两个旋转轴相互结合在一起。 此时， 测量天线可以 围绕 Θ轴转动， 无线数据终端可以围绕 轴转动。
步骤 S3 , 设置笔记本电脑的无线链路， 并使其处于正常工作状态， 满 足测试条件。
具体地， 在步骤 S3中， 无线数据终端在所支持的频段内， 应该选取所 有频段中的高、 中、 低三个信道建立链路进行测试， 而对于伸缩天线式的 无线数据终端， 应在天线的伸展和收缩两种状态下进行测试。 在 TRS测试 中， 在满足最大间隔条件下对中间信道还要进行相对灵敏度测试。 相对灵 敏度测试要求找到完整测试信道的最佳接收灵敏度的测量点， 调整定位器 的位置及测试的极化与最佳接收灵敏度点一致， 调节基站模拟器的输出功 率大于最佳接收灵敏度一定值如 + 5dB ,测试在此功率条件下无线数据终端 在中间信道的灵敏度， 中间信道的灵敏度不应超过完整测试信道的误码率 / 误帧率。
步骤 S4, 连续发送 UP功率控制命令到笔记本电脑， 直到笔记本电脑 的误码率到达一定目标值（例如， 误码率到达至少 20000 bits 1.0% ± 0.2% 的目标值）， 并实现约定的最大功率后， 开始发送数据。
步骤 S5 , 在设定的测试点进行采样测试， 分别在水平和垂直方向采集 等效全向接收功率水平极化分量 E ( ，％)和等效全向接收功率垂直极化 分量 EIS人
通过控制无线数据终端和测试天线的相对位置， 能够在三维空间有效 采样和测量每个点的接收灵敏度。 之后， 通过公式（3 )对测量的 EIS数据 进行归一化：
AEIS =丄 ¾ EISstdt - ElSnstd, ( 3 ) 其中， 是标准敏感测量， 是非标准调制的功率测量， η 是参考测量点的数目。
步骤 S6, 将在各个测试点所测量的数据利用公式（ 1 )和公式（2 ), 得 到移动终端设备或者其他无线通信产品的空间射频性能接收灵敏度指标 TRS。
尽管之前以折叠式笔记本电脑为例描述了本发明， 但是本发明同样可 以构造其他类型内置或外接的无线数据终端的笔记本进行测量， 其测量方 法与上面所述的方法类似， 这里不再重复。
本发明实施例提供了一种接收灵敏度性能测试系统， 包括笔记本电脑 无线数据终端测试转台、 全电波暗室、 球面坐标建立和测试模块、 球面放 置系统、 无线数据终端测量天线、 处理单元。 下面， 对上述模块进行详细 的说明：
全电波暗室， 用于为无线数据终端提供测试的环境， 其能够充分隔离 来自外部环境的电磁干扰， 且屏蔽效能在 800Hz 到 4GHz 范围内满足 EN50147-1标准要求， 全电波暗室的静区空间大小需要满足测试要求。
在全电波暗室中， 设置有笔记本电脑无线数据终端测试转台， 转台上 有固定或者移动测角器和测距仪， 其中， 笔记本电脑无线数据终端测试转 台用于按照预定方向和预定角度旋转无线数据终端， 并对笔记本电脑开合 角度进行测定， 以及对外接无线数据终端和笔记本电脑之间距离进行测量， 具体地， 笔记本电脑需要按照要求打开一定角度， 并利用转台上的测角器 进行标定， 当无线数据终端为内置式时， 无线数据终端天线应垂直或者水 平于笔记本底面； 当无线数据终端为外接无线数据终端时， 外接无线数据 终端的天线应垂直于笔记本电脑底面， 通过外接电缆与笔记本电脑保持一 定距离， 并利用转台的测距仪进行测距。 球面坐标建立和测试模块， 用于以待测设备的天线为原点构建球面坐 标系， 并在球面坐标系中选择测试点。 具体地， 球面坐标建立和测试模块 可以建立球面坐标系， 对于无线通信产品以其为原点建立具有 x、 y、 z轴 所定义的球面坐标系， 其中， Θ角为测试点与 z轴正方向的夹角， φ角为 X 轴正向与测试点在 x、 y平面上的投影点的夹角， 并在该球面坐标系下选取 测试坐标点。
球面放置系统， 用于在球面坐标系内控制无线终端与测量天线的角度 位置。 为了覆盖整个球面， 测试环境的最终结构是由支撑结构和用于放置 无线数据终端， 并相对于测量天线来操控的测试放置器组成的能够移动无 线数据终端 /模型和 /或测量天线以覆盖无线数据终端的整个球面辐射的模 型， 从而在每个测试点进行采样。
测量天线， 用于在球面放置系统的控制下， 采集数据模式下的无线终 端在测试点处的接收功率。 在实际的应用中， 测量天线为双极化天线， 双 极化天线能够获得球面上每一点处电场向量的两个正交分量， 并在每个测 试点采集到包括水平极化分量和垂直极化分量的接收功率。
其中， 测量天线通过公式（ 1 )分别获得每个测试点处的总接收灵敏度， 之后对每个测试点处的总接收灵敏度进行归一化：
( l )
+■
/ (Ω;/) ΕΙΞφ{β· !) 其中， TRS为当前测试点处的总接收灵敏度， 和 为测量角， EIS^ 分别为水平极化分量和垂直极化分量， 为当前测试点在球面坐标系 中的立体方向角， /为待测设备的当前工作频率。 处理单元， 用于根据测试点处的接收功率获得待测设备的总功率接收 灵敏度。 具体地， 上述处理单元通过公式（2 )获得待测设备的总接收灵敏 度：
Figure imgf000015_0001
其中， TRS为待测设备的总接收灵敏度， N和 M为分别对 和 的多 个采样间隔， 为测量角为 和％的测试点的接收功率的水平极 化分量，和 E ¾,%)为测量角为 和％的测试点的接收功率的垂直极化分 量， /为待测设备的当前工作频率。
在上文中所述无线数据终端可以包括单模式终端， 单模式终端包括时 分同步码分多址接入 ( Time Division-Synchronous Code Division Multiple Access, TD-SCDMA )、宽带码分多址接入（ Wideband Code Division Multiple Access, WCDMA ),码分多址接入（ Code Division Multiple Access, CDMA ), 全球移动通信系统 ( Global system for mobile communication, GSM )、 个人 无线接入系统 （也可称为小灵通）、 蓝牙 （BLUETOOTH ) , 无线局域网 ( Wireless Local,筒称为 WLAN )、全球定位系统（ Global Positioning System, GPS ), 射频识别 （Radio Frequency Identity, RFID )和微波接入全球互通 ( Worldwide Interoperability for Microwave Access, Wimax )等通信制式或 其组合。 无线数据终端与笔记本电脑的外接方式可以是 USB、 电气和电子 工程师学会 ( Institute for Electrical and Electronic Engineers , IEEE ) 1394、 串口或者并口等接驳方式。
综上所述， 借助于本发明的技术方案， 通过构造测量模型对笔记本的 无线数据终端进行测量， 解决了相关技术中存在的 TRP测量方案没有充分 反映数据模式下无线数据终端和天线的电磁耦合的影响， 从而导致测试结 果不准确的问题， 能够真实反映真笔记本电脑无线数据终端在数据模式下 中笔记本各元件耦合对无线数据终端的接收灵敏度性能的影响， 具有高的 真实性， 并且易于使用。
显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤 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， 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， 本发明不限制于任何特 定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于 本领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精 神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明 的保护范围之内。

Claims

权利要求书
1.一种接收灵敏度性能测试方法， 其特征在于， 该方法包括： 构造无线数据终端的测试模型；
以所述无线数据终的天线为原点构建球面坐标系， 并在所述球面坐标 系中选择测试点；
将所述测试模型放置在全电波暗室环境下， 使所述无线数据终在数据 模式下工作， 利用测量天线在所述球面坐标系中采集所述测试点处的接收 功率， 并由此获得所述待测设备的总功率接收灵敏度。
2.根据权利要求 1 所述的方法， 其特征在于， 所述无线数据终端为笔 记本电脑的无线数据终端；
所述构造无线数据终端的测试模型之前还包括步骤： 测量并固定笔记 本开合到预定夹角；
所述构造所述笔记本电脑的无线数据终端的测试模型包括：
在所述无线数据终端为外接无线数据终端的情况下， 将所述外接无线 数据终端的天线垂直、 或者水平于笔记本电脑底面；
在所述无线数据终端为内置无线数据终端的情况下， 将所述内置无线 数据终端的天线垂直于笔记本电脑底面， 并通过外接电缆与笔记本电脑保 持预定距离。
3.根据权利要求 1 所述的方法， 其特征在于， 所述测量天线为双极化 天线。
4.根据权利要求 3 所述的方法， 其特征在于， 在所述每个测试点采集 到的接收功率包括： 水平极化分量和垂直极化分量。
5.根据权利要求 4所述的方法， 其特征在于， 所述在采集到所述水平 极化分量和所述垂直极化分量之后， 获得所述待测设备的总功率接收灵敏 度为： 4π
TRS =
通过公式 分别获得所述每个
+■
/ (Ω;/) ΕΙΞφ{β· !)
测试点处的总接收灵敏度， 之后对所述每个测试点处的总接收灵敏度进行 归一化；其中， TRS为当前测试点处的总接收灵敏度， 和 为测量角， EISe 和 分别为水平极化分量和垂直极化分量， 为所述当前测试点在球面 坐标系中的立体方向角， /为所述待测设备的当前工作频率； 通过公式 获得所述待
Figure imgf000018_0001
测设备的总接收灵敏度； 其中， TRS 为所述待测设备的总接收灵敏度， Ν 和 Μ为分别对 ^和^5的多个采样间隔， ElSe ( , )为测量角为 和 Φ的测试 点的接收功率的水平极化分量，和 Ε ¾,%)为测量角为 和 Α的测试点的 接收功率的垂直极化分量， /为所述待测设备的当前工作频率。
6.—种接收灵敏度性能测试系统， 其特征在于， 该系统包括： 全电波暗室， 用于为所述无线数据终端提供测试的环境；
球面坐标建立和测试模块， 用于以所述无线数据终端的天线为原点构 建球面坐标系， 并在所述球面坐标系中选择测试点；
球面放置系统， 用于在所述球面坐标系内控制所述无线数据终端与测 量天线的角度位置；
测量天线， 用于在所述球面放置系统的控制下， 采集所述无线数据终 端在所述测试点处的接收功率， 其中， 所述无线数据终端工作与数据模式； 处理单元， 用于根据所述测试点处的接收功率获得所述待测设备的总 功率接收灵敏度。
7.根据权利要求 6所述的系统， 其特征在于， 所述无线数据终端为笔 记本电脑的无线数据终端； 该系统还包括： 笔记本电脑无线数据终端测试转台， 用于按照预定方向和预定角度旋 转无线数据终端， 对笔记本电脑开合角度进行测定， 并对外接无线数据终 端和笔记本电脑之间距离进行测量。
8.根据权利要求 7所述的系统， 其特征在于， 所述测量天线为双极化 天线。
9.根据权利要求 8所述的系统， 其特征在于， 所述测量天线在所述每 个测试点采集到的接收功率包括水平极化分量和垂直极化分量。
10. 根据权利要求 9所述的系统， 其特征在于，
4π
TRS =
所述测量天线，还用于通过
+■
/ (Ω;/) ΕΙΞφ{β· !) 别获得所述每个测试点处的总接收灵敏度， 之后对所述每个测试点处的总 接收灵敏度进行归一化； 其中， TRS为当前测试点处的总接收灵敏度， 和 为测量角， 和 分别为水平极化分量和垂直极化分量， Ω为所述 当前测试点在球面坐标系中的立体方向角， /为所述待测设备的当前工作频 所述处理单元获得所述待测设备的总功率接收灵敏度为： 通过
2NM
TRS
获得所述待测设备的总接
Figure imgf000019_0001
收灵敏度； 其中， TRS为所述待测设备的总接收灵敏度， N和 M为分别对 和 的多个采样间隔， ΕΚΘ (θ1 , )为测量角为 和 Φ的测试点的接收功率 的水平极化分量，和 Ε ¾,%)为测量角为 和 的测试点的接收功率的垂 直极化分量， /为所述待测设备的当前工作频率。
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