CN106130664B - The antenna test method and test system of mobile terminal - Google Patents
The antenna test method and test system of mobile terminal Download PDFInfo
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Abstract
本发明适用于天线测试技术领域，提供了一种移动终端的天线测试方法及测试系统。该方法包括：移动终端内部的基带芯片控制收发器产生一具有第一功率的射频信号并传输至收发隔离装置，由收发隔离装置再将射频信号传输至移动终端的天线进行辐射；收发隔离装置耦合天线辐射的射频信号并传输至收发器，由收发器测试出耦合到的射频信号的第二功率；移动终端内部的基带芯片根据第一功率和第二功率判定天线在当前测试频段下的性能是否合格。本发明通过主要复用移动终端内部相互有线连接的器件实现了移动终端天线性能的测试，相对于现有的采用综测仪的测试方式，降低了测试成本，测试结果也会更加准确。并且本发明无需对信令进行相关处理，也提高了测试速度。
The invention is applicable to the technical field of antenna testing, and provides an antenna testing method and a testing system for a mobile terminal. The method includes: the baseband chip inside the mobile terminal controls the transceiver to generate a radio frequency signal with first power and transmits it to the transceiver isolation device, and the transceiver isolation device transmits the radio frequency signal to the antenna of the mobile terminal for radiation; the transceiver isolation device couples The radio frequency signal radiated by the antenna is transmitted to the transceiver, and the transceiver tests the second power of the coupled radio frequency signal; the baseband chip inside the mobile terminal determines whether the performance of the antenna under the current test frequency band is based on the first power and the second power. qualified. The invention realizes the test of the antenna performance of the mobile terminal by mainly multiplexing the devices connected to each other by wires inside the mobile terminal. Compared with the existing test method using a comprehensive tester, the test cost is reduced and the test result is more accurate. Moreover, the present invention does not need to perform related processing on signaling, and also improves the test speed.
Description
技术领域technical field
本发明属于天线测试技术领域，尤其涉及一种移动终端的天线测试方法及测试系统。The invention belongs to the technical field of antenna testing, and in particular relates to a mobile terminal antenna testing method and testing system.
背景技术Background technique
目前移动终端在出厂前需要对其天线的性能进行测试，以便确保天线的性能达到预期要求。现有的常规测试是使用信令测试方式，具体过程为：将移动终端放入屏蔽盒中并连接综测仪，移动终端通过其天线发射一已知功率的测试信号，该测试信号被综测仪的接收天线接收，综测仪根据接收信号的功率判断天线性能是否合格。At present, the mobile terminal needs to test the performance of its antenna before leaving the factory, so as to ensure that the performance of the antenna meets the expected requirement. The existing routine test is to use the signaling test method, the specific process is: put the mobile terminal into the shielding box and connect the comprehensive tester, the mobile terminal transmits a test signal of known power through its antenna, and the test signal is comprehensively tested The receiving antenna of the instrument receives, and the comprehensive tester judges whether the performance of the antenna is qualified according to the power of the received signal.
上述测试方式存在下述问题：1、由于采用信令测试方式，还需要对信令进行相应的处理，因此测试时间较长；2、综测仪价格昂贵，导致测试成本高；3、移动终端所发射的测试信号是通过无线方式传输到综测仪的接收天线，在移动终端和综测仪的接收天线之间存在损耗，在实际测试时会通过一预设的补偿值对该损耗进行补偿。但是实际的损耗值会根据移动终端放置的位置和角度变化而变化，一旦移动终端的位置偏差较大，测试结果就会有较大误差。The above test methods have the following problems: 1. Since the signaling test method is used, the signaling needs to be processed accordingly, so the test time is relatively long; 2. The comprehensive tester is expensive, resulting in high test costs; 3. The mobile terminal The transmitted test signal is transmitted wirelessly to the receiving antenna of the comprehensive tester. There is a loss between the mobile terminal and the receiving antenna of the comprehensive tester. During the actual test, the loss will be compensated by a preset compensation value. . However, the actual loss value will vary according to the position and angle of the mobile terminal. Once the position of the mobile terminal deviates greatly, the test results will have large errors.
发明内容Contents of the invention
本发明实施例所要解决的技术问题为以较低的测试成本，快速、准确地测试出移动终端的天线性能。The technical problem to be solved by the embodiments of the present invention is to quickly and accurately test the performance of the antenna of the mobile terminal at a lower test cost.
为解决上述技术问题，本发明第一方面一种移动终端的天线测试方法，所述天线测试方法包括在预置的各个频段下对天线性能进行测试；其中，在每个频段的测试中，所述方法包括：In order to solve the above technical problems, the first aspect of the present invention is a mobile terminal antenna testing method, the antenna testing method includes testing the performance of the antenna in each preset frequency band; wherein, in the test of each frequency band, the The methods described include:
移动终端内部的基带芯片控制收发器产生一具有第一功率的射频信号，并将所述射频信号传输至收发隔离装置，由所述收发隔离装置再将所述射频信号传输至所述移动终端的天线进行辐射；The baseband chip inside the mobile terminal controls the transceiver to generate a radio frequency signal with a first power, and transmits the radio frequency signal to the transceiver isolation device, and the radio frequency signal is then transmitted to the mobile terminal by the transceiver isolation device The antenna radiates;
所述收发隔离装置耦合所述天线辐射的射频信号，并将耦合到的射频信号传输至所述收发器，由所述收发器测试出所述耦合到的射频信号的第二功率；The transceiver isolation device couples the radio frequency signal radiated by the antenna, and transmits the coupled radio frequency signal to the transceiver, and the transceiver tests the second power of the coupled radio frequency signal;
移动终端内部的基带芯片根据所述第一功率和第二功率判定所述天线在当前测试频段下的性能是否合格。The baseband chip inside the mobile terminal determines whether the performance of the antenna in the current test frequency band is qualified according to the first power and the second power.
结合第一方面，在第一方面的第一种可能的实现方式中，所述移动终端内部的基带芯片根据所述第一功率和第二功率判定所述天线在当前测试频段下的性能是否合格，包括：所述基带芯片根据所述第二功率和预置的当前频段的频段通路损耗计算得到所述天线辐射的射频信号的辐射功率；所述基带芯片根据所述第一功率和所述辐射功率判定所述天线在当前测试频段下的性能是否合格。With reference to the first aspect, in a first possible implementation of the first aspect, the baseband chip inside the mobile terminal determines whether the performance of the antenna in the current test frequency band is qualified according to the first power and the second power , including: the baseband chip calculates the radiation power of the radio frequency signal radiated by the antenna according to the second power and the preset frequency band path loss of the current frequency band; the baseband chip calculates the radiation power of the radio frequency signal radiated by the antenna according to the first power and the The power determines whether the performance of the antenna in the current test frequency band is qualified.
结合第一方面的第一种可能，在第一方面的第二种可能实现方式中，所述基带芯片根据所述第二功率和预置的当前频段的频段通路损耗计算得到所述天线辐射的射频信号的辐射功率，具体为：所述基带芯片将所述第二功率与预置的当前频段的频段通路损耗之差作为所述天线辐射的射频信号的辐射功率。In combination with the first possibility of the first aspect, in a second possible implementation manner of the first aspect, the baseband chip calculates the frequency band path loss of the antenna radiation according to the second power and the preset frequency band path loss of the current frequency band. The radiation power of the radio frequency signal is specifically: the baseband chip uses the difference between the second power and the preset frequency band path loss of the current frequency band as the radiation power of the radio frequency signal radiated by the antenna.
结合第一方面的第一种可能，在第一方面的第三种可能实现方式中，所述基带芯片根据所述第一功率和所述辐射功率判定所述天线在当前测试频段下的性能是否合格，包括：所述基带芯片将所述第一功率和所述辐射功率的比值作为所述天线的驻波比；所述基带芯片判断所述驻波比是否在标准驻波比的范围之内，若是，判定为所述天线的性能合格，若否，则判定为所述天线在当前测试频段下的性能不合格。With reference to the first possibility of the first aspect, in a third possible implementation manner of the first aspect, the baseband chip determines whether the performance of the antenna under the current test frequency band is Qualified, including: the baseband chip uses the ratio of the first power to the radiated power as the standing wave ratio of the antenna; the baseband chip judges whether the standing wave ratio is within the range of the standard standing wave ratio , if yes, it is determined that the performance of the antenna is qualified; if not, it is determined that the performance of the antenna under the current test frequency band is unqualified.
结合第一方面、第一方面的第一种可能、或者第一方面的第二种可能、或者第一方面的第三种可能，在第一方面的第四种可能的实现方式中，所述收发隔离装置为定向耦合器或环形器。In combination with the first aspect, the first possibility of the first aspect, or the second possibility of the first aspect, or the third possibility of the first aspect, in a fourth possible implementation manner of the first aspect, the The transceiver isolation device is a directional coupler or a circulator.
为解决上述技术问题，本发明第二方面提供了一种移动终端的天线测试系统，其特征在于，所述天线测试系统包括基带芯片、收发器和多路选通开关、收发隔离装置；In order to solve the above technical problems, the second aspect of the present invention provides an antenna test system for a mobile terminal, wherein the antenna test system includes a baseband chip, a transceiver, a multiplexer switch, and a transceiver isolation device;
所述多路选通开关，具有多个输入端口和单个输出端口，所述多个输入端口分别用于接收各自对应频段的测试所需的射频信号，所述单个输出端口连接所述收发隔离装置；其中，每一个输入端口均可与所述单个输出端口接通而形成通路；用于在所述基带芯片的控制下将对应的输入端口与所述单个输出端口接通；The multi-channel strobe switch has a plurality of input ports and a single output port, the plurality of input ports are respectively used to receive radio frequency signals required for testing of their corresponding frequency bands, and the single output port is connected to the transceiver isolating device ; Wherein, each input port can be connected to the single output port to form a path; for connecting the corresponding input port to the single output port under the control of the baseband chip;
所述收发器，用于在每个测试频段，在所述基带芯片的控制下产生一具有第一功率的射频信号并输入至所述多路选通开关对应的输入端口，以通过所述多路选通开关将所述射频信号传输至所述收发隔离装置；由所述收发隔离装置将所述射频信号传输至所述移动终端的天线进行辐射；The transceiver is used to generate a radio frequency signal with a first power under the control of the baseband chip in each test frequency band and input it to the corresponding input port of the multiplexer switch, so as to pass through the multiplex The radio gate switch transmits the radio frequency signal to the transceiver isolating device; the radio frequency signal is transmitted to the antenna of the mobile terminal by the transceiver isolating device for radiation;
所述测试同步控制单元，连接所述多路选通开关和所述收发器，用于将指示当前测试频段信息的指令发送至所述收发器，以使所述收发器产生对应测试频段的视频信号；还用于控制所述多路选通开关中对应的输入端口与所述单个输出端口接通；The test synchronization control unit is connected to the multi-channel gating switch and the transceiver, and is used to send an instruction indicating the information of the current test frequency band to the transceiver, so that the transceiver generates a video corresponding to the test frequency band signal; it is also used to control the corresponding input port in the multiplex switch to be connected to the single output port;
所述收发隔离装置，还用于耦合所述天线辐射的射频信号，并将耦合到的射频信号传输至所述收发器，由所述收发器测试出所述耦合到的射频信号的第二功率；The transceiver isolation device is also used to couple the radio frequency signal radiated by the antenna, and transmit the coupled radio frequency signal to the transceiver, and the transceiver tests the second power of the coupled radio frequency signal ;
所述基带芯片，用于根据所述第一功率和第二功率判定所述天线在当前测试频段下的性能是否合格。The baseband chip is configured to determine whether the performance of the antenna in the current test frequency band is qualified according to the first power and the second power.
结合第二方面，在第二方面的第一种可能的实现方式中，所述基带芯片具体用于根据所述第二功率和预置的当前频段的频段通路损耗计算得到所述天线辐射的射频信号的辐射功率，再根据所述第一功率和所述辐射功率判定所述天线在当前测试频段下的性能是否合格。With reference to the second aspect, in a first possible implementation manner of the second aspect, the baseband chip is specifically configured to calculate the radio frequency radiated by the antenna according to the second power and the preset frequency band path loss of the current frequency band. The radiation power of the signal, and then determine whether the performance of the antenna in the current test frequency band is qualified according to the first power and the radiation power.
结合第二方面的第一种可能，在第二方面的第二种可能实现方式中，所述基带芯片具体通过如下方式根据所述第二功率和预置的当前频段的频段通路损耗计算得到所述天线辐射的射频信号的辐射功率：所述基带芯片将所述第二功率与预置的当前频段的频段通路损耗之差作为所述天线辐射的射频信号的辐射功率。In combination with the first possibility of the second aspect, in the second possible implementation manner of the second aspect, the baseband chip calculates the second power and the preset frequency band path loss of the current frequency band in the following manner to obtain the The radiation power of the radio frequency signal radiated by the antenna: the baseband chip uses the difference between the second power and the preset frequency band path loss of the current frequency band as the radiation power of the radio frequency signal radiated by the antenna.
结合第二方面的第一种可能，在第二方面的第三种可能实现方式中，所述基带芯片具体通过如下方式根据所述第一功率和所述辐射功率判定所述天线在当前测试频段下的性能是否合格：所述基带芯片将所述第一功率和所述辐射功率的比值作为所述天线的驻波比，再判断所述驻波比是否在标准驻波比的范围之内，若是，判定为所述天线的性能合格，若否，则判定为所述天线在当前测试频段下的性能不合格。In combination with the first possibility of the second aspect, in a third possible implementation manner of the second aspect, the baseband chip specifically determines that the antenna is in the current test frequency band according to the first power and the radiation power in the following manner: Whether the following performance is qualified: the baseband chip uses the ratio of the first power to the radiated power as the standing wave ratio of the antenna, and then judges whether the standing wave ratio is within the range of the standard standing wave ratio, If yes, it is determined that the performance of the antenna is qualified; if not, it is determined that the performance of the antenna in the current test frequency band is unqualified.
结合第二方面、第二方面的第一种可能、第二方面的第二种可能、或者第二方面的第三种可能，在第二方面的第四种可能的实现方式中，所述收发隔离装置为定向耦合器或环形器。In combination with the second aspect, the first possibility of the second aspect, the second possibility of the second aspect, or the third possibility of the second aspect, in a fourth possible implementation manner of the second aspect, the sending and receiving The isolation device is a directional coupler or a circulator.
从上述本发明各方面或者每一方面各种可能的实现方式所提供的实施例可知，本发明主要通过复用移动终端内部的基带芯片、收发器等器件实现了移动终端天线性能的测试，硬件方面仅增加了一收发隔离装置，相对于现有的采用综测仪的测试方式，大大降低了测试成本。并且，本发明无需对信令进行相关处理，也提高了测试速度。又由于移动终端内部的基带芯片、收发器与其天线之间均为有线连接，因此通路损耗固定不变，测试结果也会更加准确。It can be known from the above-mentioned embodiments provided by various aspects of the present invention or various possible implementations of each aspect that the present invention mainly realizes the test of the mobile terminal antenna performance by multiplexing the baseband chip, transceiver and other devices inside the mobile terminal. On the one hand, only a transceiver isolation device is added, which greatly reduces the test cost compared with the existing test method using a comprehensive tester. Moreover, the present invention does not need to perform related processing on signaling, and also improves the test speed. And because the baseband chip, transceiver and antenna inside the mobile terminal are connected by wires, the path loss is constant and the test results will be more accurate.
附图说明Description of drawings
图1是本发明实施例提供的移动终端的天线测试系统的结构原理图；FIG. 1 is a structural schematic diagram of an antenna testing system for a mobile terminal provided by an embodiment of the present invention;
图2是本发明实施例提供的移动终端的天线测试方法的流程图。Fig. 2 is a flowchart of a method for testing an antenna of a mobile terminal provided by an embodiment of the present invention.
具体实施方式Detailed ways
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而非全部实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
图1示出了本发明实施例所提供的移动终端的天线测试系统的结构原理，为了便于描述，仅示出了与本发明相关的部分。FIG. 1 shows the structural principle of the mobile terminal antenna testing system provided by the embodiment of the present invention. For the convenience of description, only the parts related to the present invention are shown.
参照图1，本发明实施例所提供的移动终端的天线测试系统包括基带芯片1、收发器2、多路选通开关3和收发隔离装置4，其中，基带芯片1、收发器2和多路选通开关3均为移动终端内部原本存在的器件，仅需要增加一收发隔离装置4。可以看出，本天线测试系统主要通过复用移动终端内部的器件实现了移动终端天线性能的测试。With reference to Fig. 1, the antenna testing system of the mobile terminal that the embodiment of the present invention provides comprises baseband chip 1, transceiver 2, multiplexer switch 3 and transceiver isolating device 4, wherein, baseband chip 1, transceiver 2 and multiplexer The gating switch 3 is an original device inside the mobile terminal, and only a transceiver isolation device 4 needs to be added. It can be seen that the antenna test system realizes the test of the antenna performance of the mobile terminal mainly by multiplexing the components inside the mobile terminal.
基带芯片1主要作为整个天线测试系统中的同步控制器件以及核心运算部件使用，其同步控制作用主要体现在两方面：The baseband chip 1 is mainly used as a synchronization control device and a core computing component in the entire antenna test system, and its synchronization control function is mainly reflected in two aspects:
1、控制收发器2产生某测试频段的测试所需的射频信号。移动终端的天线性能的测试涉及到多个频段的测试，收发器2在当前时刻具体需要产生何种频段的射频信号，由基带芯片1来控制。2、控制多路选通开关3选通相应的开关通路。收发器2具有多个不同的输出端口，其所产生的不同频段的射频信号会通过不同的端口发出，例如，对应F1频段的射频信号由收发器2的第一输出端口发出，对应F2频段的射频信号由收发器2的第二输出端口发出，等等。与此对应，多路选通开关3具有多个输入端口和单个输出端口，多个输入端口分别用于接收各自对应频段的测试所需的射频信号，例如，多路选通开关3的输入端口I1与收发器2的第一输出端口连接，用于接收对应F1频段的射频信号，多路选通开关3的输入端口I2与收发器2的第二输出端口连接，对应F2频段的射频信号。多路选通开关3的每一个输入端口均可与单个输出端口接通而形成通路，以使相应频段的射频信号能够通过。因此，基带芯片1在控制收发器2产生某种频段的射频信号的同时，需要同步控制多路选通开关3将对应的输入端口与所述单个输出端口接通。1. Control the transceiver 2 to generate the radio frequency signal required for the test of a certain test frequency band. The test of the antenna performance of the mobile terminal involves the test of multiple frequency bands. The radio frequency signal of which frequency band the transceiver 2 needs to generate at the current moment is controlled by the baseband chip 1 . 2. Control the multi-channel strobe switch 3 to strobe the corresponding switch path. The transceiver 2 has a plurality of different output ports, and the radio frequency signals of different frequency bands generated by it will be sent out through different ports, for example, the radio frequency signal corresponding to the F1 frequency band is sent by the first output port of the transceiver 2, and the radio frequency signal corresponding to the F2 frequency band The radio frequency signal is sent out by the second output port of the transceiver 2, and so on. Correspondingly, the multiplex switch 3 has a plurality of input ports and a single output port, and the multiple input ports are respectively used to receive the radio frequency signals required for the test of their corresponding frequency bands, for example, the input port of the multiplex switch 3 I 1 is connected with the first output port of transceiver 2, and is used to receive the radio frequency signal of corresponding F1 frequency band, and the input port I 2 of multiplex switch 3 is connected with the second output port of transceiver 2, and corresponds to the radio frequency of F2 frequency band Signal. Each input port of the multiplexing switch 3 can be connected with a single output port to form a path, so that the radio frequency signal of the corresponding frequency band can pass through. Therefore, while the baseband chip 1 controls the transceiver 2 to generate a radio frequency signal of a certain frequency band, it also needs to synchronously control the multiplexing switch 3 to connect the corresponding input port to the single output port.
基带芯片1的核心运算功能主要体现根据相关测试数据来判定移动终端的天线的性能是否合格。The core computing function of the baseband chip 1 mainly reflects whether the performance of the antenna of the mobile terminal is qualified or not based on relevant test data.
基于上述原理，在每个测试频段，基带芯片1控制收发器2产生一具有第一功率的射频信号并输入至多路选通开关3对应的输入端口，同时控制多路选通开关3将对应的输入端口与所述单个输出端口接通。该射频信号通过多路选通开关3被传输至收发隔离装置4，由收发隔离装置4将所述射频信号传输至所述移动终端的天线进行辐射。Based on the above principles, in each test frequency band, the baseband chip 1 controls the transceiver 2 to generate a radio frequency signal with the first power and inputs it to the corresponding input port of the multi-way switch 3, and simultaneously controls the multi-way switch 3 to turn the corresponding An input port communicates with the single output port. The radio frequency signal is transmitted to the transceiver isolation device 4 through the multiplexer switch 3, and the radio frequency signal is transmitted to the antenna of the mobile terminal by the transceiver isolation device 4 for radiation.
在移动终端的天线辐射该射频信号时，收发隔离装置4还用于耦合所述天线辐射的射频信号，并将耦合到的射频信号传输至收发器2，由所述收发器2测试出所述耦合到的射频信号的第二功率。本发明中，收发器2与收发隔离装置4之间具有两种通信路径，分别为前向传输路径和反射传输路径，其中，前向传输路径包括图1中所示的射频发射通路1至射频发射通路4，通过将测试用的射频信号的收、发分为两条路径来传输，可以使得两种信号互不干扰，保证测试结果更为准确。具体实现时，收发隔离装置4可以采用定向耦合器或环形器实现。When the antenna of the mobile terminal radiates the radio frequency signal, the transceiver isolation device 4 is also used to couple the radio frequency signal radiated by the antenna, and transmit the coupled radio frequency signal to the transceiver 2, and the transceiver 2 tests out the radio frequency signal The second power of the radio frequency signal coupled to. In the present invention, there are two kinds of communication paths between the transceiver 2 and the transceiver isolation device 4, which are forward transmission path and reflection transmission path respectively, wherein, the forward transmission path includes the radio frequency transmission path 1 shown in FIG. 1 to the radio frequency The transmitting channel 4 divides the receiving and transmitting of the radio frequency signal for testing into two paths for transmission, so that the two signals do not interfere with each other and ensure more accurate test results. In specific implementation, the transceiver isolation device 4 can be realized by using a directional coupler or a circulator.
最后，由基带芯片1根据所述第一功率和第二功率判定所述天线在当前测试频段下的性能是否合格。Finally, the baseband chip 1 determines whether the performance of the antenna in the current test frequency band is qualified according to the first power and the second power.
由上文可以看出，本发明主要通过复用移动终端内部的基带芯片1、收发器2、多路选通开关3等器件实现了移动终端天线性能的测试，硬件方面仅增加了一收发隔离装置4，相对于现有的采用综测仪的测试方式，大大降低了测试成本。并且，本发明无需对信令进行相关处理，也提高了测试速度。又由于移动终端内部的基带芯片1、收发器2、多路选通开关3、收发隔离装置4与其天线之间均为有线连接，因此通路损耗固定不变，测试结果也会更加准确。As can be seen from the above, the present invention mainly realizes the test of the antenna performance of the mobile terminal by multiplexing the baseband chip 1, the transceiver 2, the multiplexer switch 3 and other devices inside the mobile terminal, and the hardware only adds a transceiver isolation Device 4 greatly reduces the test cost compared with the existing test method using a comprehensive tester. Moreover, the present invention does not need to perform related processing on signaling, and also improves the test speed. And because the baseband chip 1, transceiver 2, multiplexer switch 3, transceiver isolation device 4 and the antenna inside the mobile terminal are all connected by wires, the path loss is constant and the test results will be more accurate.
上述通路损耗包括前向传输路径的损耗和反射传输路径上的损耗，其包含在上述耦合的射频信号的第二功率中。由于基带芯片1、收发器2、多路选通开关3、收发隔离装置4与其天线之间均为有线连接，该损耗不会受移动终端放置的位置和角度变化而变化。该通路损耗可预先通过测试得到并预置在基带芯片1中。并且，由于不同频段的射频信号是由多路选通开关3的不同通路传输的，为使测试结果更加准确，可分别预置针对不同测试频段的损耗。The aforementioned path loss includes the loss of the forward transmission path and the loss of the reflected transmission path, which are included in the second power of the coupled radio frequency signal. Since the baseband chip 1, the transceiver 2, the multiplexer switch 3, the transmitting and receiving isolating device 4 and their antennas are connected by wires, the loss will not be changed by the position and angle of the mobile terminal. The path loss can be obtained through testing in advance and preset in the baseband chip 1 . Moreover, since the radio frequency signals of different frequency bands are transmitted by different paths of the multiplexer 3 , in order to make the test result more accurate, losses for different test frequency bands can be preset respectively.
因此，基带芯片1具体用于根据所述第二功率和预置的当前频段的频段通路损耗计算得到所述天线辐射的射频信号的辐射功率，再根据所述第一功率和所述辐射功率判定所述天线在当前测试频段下的性能是否合格。Therefore, the baseband chip 1 is specifically used to calculate the radiation power of the radio frequency signal radiated by the antenna according to the second power and the preset frequency band path loss of the current frequency band, and then determine according to the first power and the radiation power Whether the performance of the antenna in the current test frequency band is qualified.
进一步地，基带芯片1可将所述第二功率与预置的当前频段的频段通路损耗之差作为所述天线辐射的射频信号的辐射功率。例如，假设第二功率为C，预置的当前频段的频段通路损耗为c1，则天线辐射的射频信号的辐射功率为B，则b＝c－c1。Further, the baseband chip 1 may use the difference between the second power and the preset frequency band path loss of the current frequency band as the radiation power of the radio frequency signal radiated by the antenna. For example, assuming that the second power is C, and the preset frequency band path loss of the current frequency band is c1, then the radiation power of the radio frequency signal radiated by the antenna is B, then b=c−c1.
更进一步地，基带芯片将所述第一功率和所述辐射功率的比值作为所述天线的驻波比，再判断所述驻波比是否在标准驻波比的范围之内，若是，判定为所述天线的性能合格，若否，则判定为所述天线在当前测试频段下的性能不合格。Furthermore, the baseband chip uses the ratio of the first power to the radiated power as the standing wave ratio of the antenna, and then judges whether the standing wave ratio is within the range of the standard standing wave ratio, and if so, judges as The performance of the antenna is qualified, if not, it is determined that the performance of the antenna in the current test frequency band is unqualified.
其中，驻波比可根据如下公式计算得到：VSWR＝a/b，其中，VSWR为天线的驻波比，a为上述第一功率，b为天线辐射的射频信号的辐射功率。Wherein, the standing wave ratio can be calculated according to the following formula: VSWR=a/b, wherein, VSWR is the standing wave ratio of the antenna, a is the above-mentioned first power, and b is the radiation power of the radio frequency signal radiated by the antenna.
本发明实施例还提供了一种移动终端的天线测试方法，所述天线测试方法包括在预置的各个频段下对天线性能进行测试；其中，在每个频段的测试中，如图2所示，所述方法包括下述步骤：The embodiment of the present invention also provides an antenna test method for a mobile terminal, the antenna test method includes testing the performance of the antenna in each preset frequency band; wherein, in the test of each frequency band, as shown in Figure 2 , the method includes the steps of:
步骤S201，移动终端内部的基带芯片控制收发器产生一具有第一功率的射频信号，并将所述射频信号传输至收发隔离装置，由所述收发隔离装置再将所述射频信号传输至所述移动终端的天线进行辐射。Step S201, the baseband chip inside the mobile terminal controls the transceiver to generate a radio frequency signal with a first power, and transmits the radio frequency signal to the transceiver isolating device, and the transceiver isolating device then transmits the radio frequency signal to the The antenna of the mobile terminal radiates.
本发明实施例中，基带芯片主要作为整个天线测试系统中的同步控制器件以及核心运算部件使用，其同步控制作用和核心运算功能方面请参照上文内容，此处不再一一赘述。In the embodiment of the present invention, the baseband chip is mainly used as a synchronous control device and a core computing component in the entire antenna test system. For its synchronous control function and core computing function, please refer to the above content, and will not repeat them here.
移动终端的天线性能的测试涉及到多个频段的测试，收发器具有多个不同的输出端口，其所产生的不同频段的射频信号会通过不同的端口发出，例如，对应F1频段的射频信号由收发器的第一输出端口发出，对应F2频段的射频信号由收发器的第二输出端口发出，等等。与此对应，多路选通开关具有多个输入端口和单个输出端口，多个输入端口分别用于接收各自对应频段的测试所需的射频信号，例如，多路选通开关的输入端口I1与收发器的第一输出端口连接，用于接收对应F1频段的射频信号，多路选通开关的输入端口I2与收发器的第二输出端口连接，对应F2频段的射频信号。多路选通开关3的每一个输入端口均可与单个输出端口接通而形成通路，以使相应频段的射频信号能够通过。因此，基带芯片在控制收发器产生某种频段的射频信号的同时，需要同步控制多路选通开关将对应的输入端口与所述单个输出端口接通。The test of the antenna performance of the mobile terminal involves the test of multiple frequency bands. The transceiver has multiple different output ports, and the radio frequency signals of different frequency bands generated by it will be sent through different ports. For example, the radio frequency signal corresponding to the F1 frequency band is sent by The first output port of the transceiver is sent out, and the radio frequency signal corresponding to the F2 frequency band is sent out by the second output port of the transceiver, and so on. Correspondingly, the multiplex switch has multiple input ports and a single output port, and the multiple input ports are respectively used to receive the radio frequency signals required for the test of their corresponding frequency bands, for example, the input port I1 of the multiplex switch It is connected with the first output port of the transceiver for receiving the radio frequency signal corresponding to the F1 frequency band, and the input port I2 of the multiplexer is connected with the second output port of the transceiver for the radio frequency signal corresponding to the F2 frequency band. Each input port of the multiplexing switch 3 can be connected with a single output port to form a path, so that the radio frequency signal of the corresponding frequency band can pass through. Therefore, while the baseband chip controls the transceiver to generate radio frequency signals of a certain frequency band, it also needs to synchronously control the multiplexer switch to connect the corresponding input port to the single output port.
测试时，需将移动终端处于移动终端的天线周边没有金属也没有其他介质接触的自由模拟空间中。在每个测试频段，基带芯片控制收发器产生一具有第一功率的射频信号并输入至多路选通开关对应的输入端口，同时控制多路选通开关将对应的输入端口与所述单个输出端口接通。该射频信号通过多路选通开关被传输至收发隔离装置，由收发隔离装置将所述射频信号传输至所述移动终端的天线进行辐射。During the test, the mobile terminal needs to be placed in a free simulation space where there is no metal or other media contact around the antenna of the mobile terminal. In each test frequency band, the baseband chip controls the transceiver to generate a radio frequency signal with the first power and inputs it to the corresponding input port of the multiplex switch, and simultaneously controls the multiplex switch to connect the corresponding input port with the single output port connected. The radio frequency signal is transmitted to the transmitting and receiving isolating device through the multiplex switch, and the transmitting and receiving isolating device transmits the radio frequency signal to the antenna of the mobile terminal for radiation.
步骤S202，所述收发隔离装置耦合所述天线辐射的射频信号，并将耦合到的射频信号传输至所述收发器，由所述收发器测试出所述耦合到的射频信号的第二功率。Step S202, the transceiver isolating device couples the radio frequency signal radiated by the antenna, and transmits the coupled radio frequency signal to the transceiver, and the transceiver tests the second power of the coupled radio frequency signal.
在移动终端的天线辐射该射频信号时，收发隔离装置还用于耦合所述天线辐射的射频信号，并将耦合到的射频信号传输至收发器，由所述收发器测试出所述耦合到的射频信号的第二功率。本发明中，收发器与收发隔离装置之间具有两种通信路径，分别为前向传输路径和反射传输路径，其中，前向传输路径包括图1中所示的射频发射通路至射频发射通路，通过将测试用的射频信号的收、发分为两条路径来传输，可以使得两种信号互不干扰，保证测试结果更为准确。具体实现时，收发隔离装置可以采用定向耦合器或环形器实现。When the antenna of the mobile terminal radiates the radio frequency signal, the transceiver isolation device is also used to couple the radio frequency signal radiated by the antenna, and transmit the coupled radio frequency signal to the transceiver, and the transceiver tests the coupled radio frequency signal The second power of the radio frequency signal. In the present invention, there are two communication paths between the transceiver and the transceiver isolating device, which are forward transmission path and reflection transmission path respectively, wherein the forward transmission path includes the radio frequency transmission path shown in FIG. 1 to the radio frequency transmission path, By dividing the receiving and sending of the radio frequency signal used for testing into two paths for transmission, the two signals can be prevented from interfering with each other to ensure more accurate test results. In specific implementation, the transceiver isolation device can be realized by using a directional coupler or a circulator.
步骤S203，移动终端内部的基带芯片根据所述第一功率和第二功率判定所述天线在当前测试频段下的性能是否合格。Step S203, the baseband chip inside the mobile terminal determines whether the performance of the antenna in the current test frequency band is qualified according to the first power and the second power.
由上文可以看出，本发明主要通过复用移动终端内部的基带芯片、收发器、多路选通开关等器件实现了移动终端天线性能的测试，硬件方面仅增加了一收发隔离装置，相对于现有的采用综测仪的测试方式，大大降低了测试成本。并且，本发明无需对信令进行相关处理，也提高了测试速度。又由于移动终端内部的基带芯片、收发器、多路选通开关、收发隔离装置与其天线之间均为有线连接，因此通路损耗固定不变，测试结果也会更加准确。As can be seen from the above, the present invention mainly realizes the test of the mobile terminal antenna performance by multiplexing the baseband chip, transceiver, multi-channel gating switch and other devices inside the mobile terminal. The hardware only adds a transceiver isolation device, which is relatively Compared with the existing test method using a comprehensive tester, the test cost is greatly reduced. Moreover, the present invention does not need to perform related processing on signaling, and also improves the test speed. And because the baseband chips, transceivers, multi-channel strobe switches, transceiver isolation devices and antennas inside the mobile terminal are connected by wires, the path loss is constant and the test results will be more accurate.
上述通路损耗包括前向传输路径的损耗和反射传输路径上的损耗，其包含在上述耦合的射频信号的第二功率中。由于基带芯片、收发器、多路选通开关、收发隔离装置与其天线之间均为有线连接，该损耗不会受移动终端放置的位置和角度变化而变化。该通路损耗可预先通过测试得到并预置在基带芯片中。并且，由于不同频段的射频信号是由多路选通开关的不同通路传输的，为使测试结果更加准确，可分别预置针对不同测试频段的损耗。The aforementioned path loss includes the loss of the forward transmission path and the loss of the reflected transmission path, which are included in the second power of the coupled radio frequency signal. Since the baseband chip, transceiver, multi-channel gating switch, transceiver isolation device and its antenna are all connected by wires, the loss will not be changed by the position and angle of the mobile terminal. The path loss can be obtained through testing in advance and preset in the baseband chip. Moreover, since the radio frequency signals of different frequency bands are transmitted by different paths of the multi-channel gating switch, in order to make the test result more accurate, losses for different test frequency bands can be preset respectively.
进一步地，所述移动终端内部的基带芯片根据所述第一功率和第二功率判定所述天线在当前测试频段下的性能是否合格，包括：Further, the baseband chip inside the mobile terminal determines whether the performance of the antenna in the current test frequency band is qualified according to the first power and the second power, including:
所述基带芯片根据所述第二功率和预置的当前频段的频段通路损耗计算得到所述天线辐射的射频信号的辐射功率；The baseband chip calculates the radiation power of the radio frequency signal radiated by the antenna according to the second power and the preset frequency band path loss of the current frequency band;
所述基带芯片根据所述第一功率和所述辐射功率判定所述天线在当前测试频段下的性能是否合格。The baseband chip determines whether the performance of the antenna in the current test frequency band is qualified according to the first power and the radiation power.
更进一步地，所述基带芯片根据所述第二功率和预置的当前频段的频段通路损耗计算得到所述天线辐射的射频信号的辐射功率，具体为：Further, the baseband chip calculates the radiation power of the radio frequency signal radiated by the antenna according to the second power and the preset frequency band path loss of the current frequency band, specifically:
所述基带芯片将所述第二功率与预置的当前频段的频段通路损耗之差作为所述天线辐射的射频信号的辐射功率。The baseband chip uses the difference between the second power and the preset frequency band path loss of the current frequency band as the radiation power of the radio frequency signal radiated by the antenna.
例如，假设第二功率为C，预置的当前频段的频段通路损耗为c1，则天线辐射的射频信号的辐射功率为B，则b＝c－c1。For example, assuming that the second power is C, and the preset frequency band path loss of the current frequency band is c1, then the radiation power of the radio frequency signal radiated by the antenna is B, then b=c−c1.
更进一步地，基带芯片根据所述第一功率和所述辐射功率判定所述天线在当前测试频段下的性能是否合格，包括：Furthermore, the baseband chip determines whether the performance of the antenna in the current test frequency band is qualified according to the first power and the radiation power, including:
所述基带芯片将所述第一功率和所述辐射功率的比值作为所述天线的驻波比；中，驻波比可根据如下公式计算得到：VSWR＝a/b，其中，VSWR为天线的驻波比，a为上述第一功率，b为天线辐射的射频信号的辐射功率。The baseband chip uses the ratio of the first power to the radiated power as the standing wave ratio of the antenna; wherein, the standing wave ratio can be calculated according to the following formula: VSWR=a/b, where VSWR is the standing wave ratio of the antenna Standing wave ratio, a is the above-mentioned first power, b is the radiation power of the radio frequency signal radiated by the antenna.
所述基带芯片判断所述驻波比是否在标准驻波比的范围之内，若是，判定为所述天线的性能合格，若否，则判定为所述天线在当前测试频段下的性能不合格。The baseband chip judges whether the standing wave ratio is within the range of the standard standing wave ratio, if so, it is judged that the performance of the antenna is qualified, if not, it is judged that the performance of the antenna is unqualified under the current test frequency band .
在本申请所提供的几个实施例中，应该理解到，所揭露的系统和方法，可以通过其它的方式实现。例如，以上所描述的系统实施例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或模块的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed system and method can be implemented in other ways. For example, the system embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or may be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
另外，在本发明各个实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.
所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-OnlyMemory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes.
需要说明的是，对于前述的各方法实施例，为了简便描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可以采用其它顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定都是本发明所必须的。It should be noted that, for the sake of simplicity of description, the aforementioned method embodiments are expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence. Because of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其它实施例的相关描述。In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.
以上为对本发明所提供的一种移动终端的天线测试方法及测试系统的描述，对于本领域的技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本发明的限制。The above is a description of a mobile terminal antenna testing method and testing system provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be changes in the specific implementation and application scope. In summary, the contents of this specification should not be construed as limiting the present invention.
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| CN107276693B (en) * | 2017-07-17 | 2021-03-16 | Oppo广东移动通信有限公司 | Terminal RF front-end testing method, equipment and system |
| CN108111176B (en) * | 2017-12-08 | 2021-02-19 | Tcl移动通信科技（宁波）有限公司 | Double-antenna radio frequency power detection circuit, device and mobile terminal |
| CN108107279B (en) * | 2017-12-20 | 2020-10-23 | 宁波三星医疗电气股份有限公司 | Incoming material detection method for customized antenna |
| CN108111236B (en) * | 2017-12-28 | 2021-05-11 | 上海传英信息技术有限公司 | Computer readable storage medium for antenna test and test system |
| CN108801311B (en) * | 2018-07-06 | 2020-08-14 | Oppo（重庆）智能科技有限公司 | Test Fixtures and Test Methods |
| CN108964798B (en) * | 2018-07-18 | 2021-04-06 | Oppo广东移动通信有限公司 | Radio frequency circuit debugging method and related device |
| CN109541329A (en) * | 2018-09-29 | 2019-03-29 | 上海与德科技有限公司 | A kind of antenna test method and device, antenna measurement equipment and storage medium |
| CN110290577B (en) * | 2019-07-15 | 2022-06-07 | Oppo（重庆）智能科技有限公司 | Power compensation method, antenna assembly and electronic equipment |
| CN113364534B (en) * | 2020-03-04 | 2023-05-02 | 佛山市云米电器科技有限公司 | Antenna test method, device and computer readable storage medium |
| CN115529059A (en) * | 2022-09-20 | 2022-12-27 | Oppo广东移动通信有限公司 | Radio Frequency Circuits, Antenna Devices and Electronic Equipment |
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