CN100468068C - Automatic test system and method for mobile phone radiation - Google Patents

Abstract

A mobile phone radiation automatic test system and method, mainly installs the test equipment needed by different mobile phone radiation test items in a anechoic chamber, and provides the test instrument needed by different mobile phone radiation test items outside the anechoic chamber, when different mobile phone radiation test items are needed to be performed in the same anechoic chamber, the on-line of each instrument is automatically switched to the item to be tested by the mobile phone through the developed program, thus achieving the purpose of completing different mobile phone radiation test items by using the same anechoic chamber to switch the related equipment instrument.

Description

A mobile phone radiation automatic testing system and method

technical field

The present invention mainly proposes a mobile phone radiation automatic testing system and method. It mainly installs the test equipment required for different mobile phone radiation test items in an anechoic chamber (Chamber), and at the same time provides the corresponding radiation test equipment for different mobile phone radiation outside the anechoic chamber. The test instruments required for the test items can automatically switch the connection between each instrument to the item to be tested by the mobile phone through the developed program, so that the purpose of using the same anechoic chamber to switch related equipment and instruments to complete different mobile phone radiation test items.

Background technique

It is known that in the development process or certification stage of mobile phones, various radiation tests need to be carried out in an anechoic chamber to verify whether the mobile phone meets the requirements of relevant test specifications. The test items include placing the mobile phone to be tested in an anechoic chamber. Radiation spurious emission test in different frequency bands (Radiation spurious emission test) and antenna pattern test (Antenna pattern test) done by placing the mobile phone under test in an anechoic chamber to understand the relevant radiation characteristics of the mobile phone under test, and Use the test results to judge whether it meets the requirements of the relevant test specifications.

Known test laboratories often adopt the method of one room and one test item in the radiation test structure, that is, an anechoic chamber is only used to match the instruments required for a certain test item, so when it is necessary to conduct different tests on the mobile phone to be tested When testing specific test items, it is necessary to manually adjust the connection between each test equipment, test instrument and the mobile phone to be tested or move the mobile phone to be tested to another site equipped with different test equipment and test instruments to continue testing , which is extremely inconvenient for testers.

In order to more clearly illustrate the known methods of using an anechoic chamber to perform spurious signal emission tests and antenna pattern tests in different frequency bands, please refer to the descriptions of Figures 1 and 2 below. , a schematic diagram of the connection method of related test equipment and test instruments, wherein the upper half of the boundary line 10 in Figure 1 indicates that it is in the anechoic chamber, and the lower half of the boundary line 10 indicates that it is in the anechoic chamber. It can be seen from the figure that the Measuring mobile phone 15, high-frequency receiving antenna 11 and low-frequency receiving antenna 12 are located in the anechoic chamber, and the required measuring instrument spectrum analyzer 14 is located outside the anechoic chamber. The antenna switch 13 switches back and forth between the high-frequency receiving antenna 11 and the low-frequency receiving antenna 12, and through the switching of different transmission paths, the high and low frequency signals received from the mobile phone 15 to be tested are respectively sent to the spectrum analyzer 14 for analysis. To find out whether the mobile phone 15 to be tested generates spurious signals and to make relevant data, this connection method can be implemented by an independent anechoic chamber in a known way.

Please continue to refer to FIG. 2. FIG. 2 is a schematic diagram of the connection method of related test equipment and test instruments when the known antenna pattern test is performed in an anechoic chamber. The upper half of the boundary line 10 in the figure is shown in the anechoic chamber The lower half of the boundary line 10 indicates that it is outside the anechoic chamber. As can be seen from the figure, the mobile phone 15 to be tested and the high-frequency receiving antenna 11 are located in the anechoic chamber, and the required measuring instrument network analyzer 16 is located outside the anechoic chamber. When the antenna pattern test is performed, a high-frequency receiving antenna 11 sends the received signal to the network analyzer 16 for analysis to produce relevant antenna radiation pattern data. This connection method is in the known In practice, it can be carried out by an independent anechoic chamber.

Most of the aforementioned mobile phone radiation test methods need to be carried out in a fixed test environment. If the high-frequency connection lines between the relevant test equipment and test instruments in the anechoic chamber cannot be fixed, the geometric shape of the connection line will change, which will affect the measurement results. precision and accuracy.

Based on the foregoing analysis, it can be seen that the known mobile phone radiation measurement methods, whether it is to perform spurious signal emission test or antenna pattern test, the measurement systems and measurement methods required by the two are very similar, and both need to be carried out in an anechoic chamber. Therefore, if When carrying out different test items in a known manner, it is necessary to manually adjust the connection between each test equipment, the test instrument and the mobile phone to be tested or move the mobile phone to be tested to a different test space to continue testing with manpower. The following problems arise:

1. It is not easy to switch the relevant test equipment and test instruments online between various test items, which increases the complexity of the test process.

2. Frequent dismantling of high-frequency connectors can easily cause damage to high-frequency connectors.

3. The high-frequency connection lines connecting various instruments and equipment cannot be placed in a fixed position, so the uncertainty and accuracy of the calibration caused by the geometric shape change of the high-frequency connection lines are increased.

4. Increase the frequent correction frequency and increase the correction process.

5. Increase the manpower and time required for the testing process.

6. Reduce the use efficiency of the anechoic chamber.

Therefore, the present invention proposes a mobile phone radiation automatic test system and method in order to solve the aforementioned problems caused by the known mobile phone in spurious signal transmission test and antenna pattern test. The system and method are mainly installed in an anechoic chamber. The test equipment required for different mobile phone radiation test items is also provided and installed outside the anechoic chamber corresponding to the test equipment required for different mobile phone radiation test items, and the connection between each instrument is automatically switched to the mobile phone by using a pre-developed program The project to be tested can achieve the purpose of using the same anechoic chamber to switch related equipment and instruments to complete different mobile phone radiation test projects.

Contents of the invention

The main purpose of the present invention is to provide a mobile phone radiation automatic testing system and method, which uses a pre-developed program-controlled high-frequency switch to automatically switch the connection between various instruments to the system and method for the mobile phone to be tested.

The secondary purpose of the present invention is to provide a mobile phone radiation automatic testing system and method to avoid damage caused by frequent disassembly of the high-frequency connectors of each connection.

Another object of the present invention is to provide a mobile phone radiation automatic testing system and method, which can make the high-frequency connection lines connected to various instruments and equipments be placed in fixed positions without moving, and reduce the damage caused by the change of the geometric shape of the high-frequency connection lines. Correct for uncertainty and accuracy.

Another object of the present invention is to provide a mobile phone radiation automatic testing system and method, which can reduce the frequent calibration frequency and shorten the calibration process.

In order to achieve the purpose of the above invention, the present invention mainly proposes to use the pre-designed high-frequency switch to cooperate with the relevant test equipment and test instruments required for different mobile phone radiation test items to switch the corresponding test items, so that the same anechoic chamber can be used. The switching of related equipment and instruments completes the purpose of different mobile phone radiation test items.

Description of drawings

Fig. 1 is known parasitic signal transmission test wiring diagram;

Fig. 2 is known antenna pattern test wiring diagram;

Fig. 3 is a wiring diagram of the mobile phone radiation automatic test system of the present invention.

Wherein, the reference signs are explained as follows:

11 HF receiving antenna

12 LF receiving antenna

13 High and low frequency receiving antenna switch

14 Spectrum Analyzer

15 mobile phone under test

16 Network Analyzer

31 HF receiving antenna switch

32 High and low frequency receiving antenna switch

Detailed ways

In order to further understand the technology, means and effects that the present invention adopts to achieve the predetermined purpose, please refer to the following detailed description and accompanying drawings of the present invention. It is believed that the purpose, characteristics and characteristics of the present invention can be obtained from this For specific understanding, however, the accompanying drawings are only for reference and illustration, and are not intended to limit the present invention.

The present invention mainly provides a method of using a pre-designed high-frequency switch to cooperate with relevant test equipment and test instruments required for different mobile phone radiation test items to switch corresponding test items, so that the same anechoic chamber can be used to switch related equipment and instruments. Complete the purpose of different mobile phone radiation test items.

Please refer to the description of Fig. 3, Fig. 3 is a schematic diagram of the mobile phone radiation automatic test system and method of the present invention, wherein the upper half of the dividing line 10 in the figure is represented in the anechoic chamber, and the lower part of the dividing line 10 is represented in the radio wave Outside the anechoic chamber, the present invention mainly uses the pre-designed high-frequency switch to cooperate with the relevant test equipment and test instruments required for different mobile phone radiation test items to switch the corresponding test items. The high-frequency receiving antenna 11 in the anechoic chamber receives the high-frequency signal emitted by the mobile phone 15 to be tested and switches the signal transmission path outside the anechoic chamber to determine whether the signal path is sent to the network analyzer 16 or the spectrum analyzer 14 .

Based on the above, when the high-frequency receiving antenna switch 31 is set at the position 311, then cooperate with the operation of the network analyzer 16, then the antenna pattern test can be performed on the mobile phone 15 to be tested in the anechoic chamber.

Similarly, when the high-frequency receiving antenna switch 31 is set at the position of 312, the signal transmission path of the high-frequency receiving antenna 11 will lead to the transmission path of the spectrum analyzer 14, and the spectrum analyzer 14 can receive the The switching of the antenna switch 32 determines whether the signal to be received is the signal sent by the high-frequency receiving antenna 11 in the anechoic chamber or the signal sent by the low-frequency receiving antenna 12 .

Bearing the above, when the high-frequency receiving antenna switch 31 is set at the position of 312 and the high-low frequency receiving antenna switch 32 is set at the position of 321, then the high-frequency receiving antenna 11 is received by the mobile phone 15 to be tested in the anechoic chamber. The high-frequency signal that comes out will be sent to spectrum analyzer 14 smoothly and do analysis; The low-frequency signal emitted by 15 will be smoothly sent to the spectrum analyzer 14 for analysis.

In summary, the present invention can effectively use the same anechoic chamber to carry out different mobile phone radiation test items, including the spurious signal emission test and the antenna pattern test of the mobile phone, that is, the test program developed by the present invention , control the switching and wiring mode between the relevant high-frequency switches, and automatically switch the test items required by the connection between the instruments to the mobile phone and perform the test, so as to save manpower and time in the test process and effectively improve the test process. Therefore, the present invention The effects and advantages that can be achieved are as follows:

1. During the test process, the developed program can automatically switch the connection between each instrument to the item to be tested on the mobile phone, effectively improving the test process.

2. Reduce the damage to high-frequency connectors caused by frequent disassembly.

3. The high-frequency connection lines connecting various instruments and equipment can be placed in a fixed position without moving, reducing the calibration uncertainty and accuracy caused by the geometric shape change of the high-frequency connection lines.

4. It can reduce the frequent calibration frequency and shorten the calibration process.

5. Save manpower and time required for the testing process.

6. Increase the use efficiency of the anechoic chamber.

Therefore, the present invention can definitely use the technology disclosed above to solve the shortcomings of the known mobile phone radiation test that must rely heavily on cumbersome steps such as wiring and adjustment.

However, the drawings and descriptions disclosed above are only embodiments of the present invention, and those skilled in the art can make other various improvements based on the above descriptions, but these changes still belong to the creative spirit of the present invention and are defined below within the scope of the patent.

Claims (2)

1. A mobile phone radiation automatic test system, comprising: an anechoic chamber; A high-frequency receiving antenna is installed inside the anechoic chamber to receive the high-frequency frequencies radiated by the object to be tested; A low-frequency receiving antenna is installed inside the anechoic chamber to receive the low-frequency frequencies radiated by the object to be measured; A spectrum analyzer, used to analyze the high and low frequency spurious signals radiated by the object to be measured; A network analyzer, which is used to analyze and generate the antenna field pattern radiated from the object to be measured; A high-frequency receiving antenna switch, used to switch the high-frequency connection between the high-frequency antenna and the network analyzer; A high and low frequency receiving antenna switch, used to switch the high frequency connection between the high and low frequency antenna and the spectrum analyzer; A switch control program is used to control the switching of the high-frequency receiving antenna switch and the high-low frequency receiving antenna switch. 2. An automatic test method for mobile phone radiation, comprising a high-frequency spurious signal test step, a low-frequency spurious signal test step and an antenna pattern test step; When testing high-frequency spurious signals, use the switch control program to place the high-frequency receiving antenna switch on the spectrum analyzer end, and at the same time place the high- and low-frequency receiving antenna switch on the high-frequency receiving antenna end. When the high-frequency receiving antenna receives the high-frequency signal radiated by the object under test, the high-frequency signal can be smoothly transmitted to the spectrum analyzer; When performing low-frequency spurious signal testing, use the switch control program to place the high-low frequency receiving antenna switch on the low-frequency receiving antenna end. The low-frequency signal is successfully transmitted to the spectrum analyzer; When testing the antenna field diagram, use the switch control program to place the high-frequency receiving antenna switch on the network analyzer end. When the high-frequency receiving antenna receives the high-frequency signal radiated by the object to be tested, the high-frequency signal can be successfully transmitted to the network analyzer.

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