Adjustable attenuator group device for radio frequency test

Abstract

The utility model discloses an adjustable attenuator group device for radio frequency testing, which comprises a plurality of attenuator modules, different attenuator modules form a closed-loop or closed-loop radio frequency cable through an electronic air pressure controller, and different attenuator modules are connected in series or in a single-to-multiple-to-one mode. Each attenuator module comprises a plurality of attenuators of the same type and size, and the plurality of attenuators of the same type and size in the same attenuator module are connected one by one or more through radio frequency antenna interfaces; through the new technical scheme of the utility model, the attenuator group can be tested by using manual matching connection, the maintenance of test equipment is facilitated, the test time for testing a single DFS channel is about 25 minutes, the test time for testing the DFS channel can be shortened by 8 minutes after the device is used, and the like, so that the test efficiency is greatly improved. And the method is also suitable for other channels needing to be tested, so that the beneficial effect of greatly improving the test efficiency can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency testing devices, in particular to an adjustable attenuator group device for radio frequency testing. Background Art

[0002] Radio frequency products need to undergo adaptive and dynamic frequency selection testing during certification. During the test, attenuators with different attenuation values ​​are combined into an attenuator group device to attenuate the corresponding signal to meet the standard size requirements.

[0003] However, attenuators of different sizes need to be frequently connected and combined into an attenuator group device that meets the requirements. In order to avoid the problem of damage to the attenuator and RF cable caused by frequent disassembly during connection, it is urgently needed to build an attenuator group device that meets the requirements in a relatively economical and simple way, and establish the ability to attenuate signals of different sizes manually or automatically, while minimizing the frequent rotation connections between the test equipment and the attenuator, avoiding signal distortion when the connection is not normal, and facilitating and quickly combining the attenuation resistance required for RF testing. Utility Model Content

[0004] In response to the above technical problems in the related art, the present invention proposes an adjustable attenuator group device for radio frequency testing, which can overcome the above deficiencies in the prior art.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0006] An adjustable attenuator group device for radio frequency testing;

[0007] The adjustable attenuator group device for radio frequency testing includes several attenuator modules. Different attenuator modules are connected in series by radio frequency cables that form a passage or a closed circuit through an electronic air pressure controller. Different attenuator modules are connected in series individually or in multiples. Each attenuator module includes several attenuators of the same type and size. Several attenuators of the same type and size in the same attenuator module are connected individually or in multiples through a radio frequency antenna interface.

[0008] Furthermore, two sides of the plurality of attenuator modules are an inlet end and an outlet end respectively, the other end of the inlet end is connected to the device under test, and the other end of the outlet end is connected to the switch box and the test system.

[0009] Furthermore, the number of attenuator modules provided is six, and the number of attenuators of the same type and size provided in each group of attenuator modules is three.

[0010] Furthermore, the attenuators of the same type and size in the six groups of the attenuator modules are respectively a 1 dBm attenuator, a 3 dBm attenuator, a 6 dBm attenuator, a 10 dBm attenuator, a 20 dBm attenuator and a 40 dBm attenuator.

[0011] Furthermore, the radio frequency antenna interfaces connected to a plurality of attenuators of the same type and size in the same attenuator module are all arranged on the interface board.

[0012] Furthermore, at least one attenuator module is connected between the inlet end and the outlet end, and at least one attenuator in the connected attenuator module is connected.

[0013] Furthermore, the plurality of attenuators of the same type and size included in the attenuator module are all interlocked and connected with each other through the first RF antenna interface, the second RF antenna interface, the third RF antenna interface, and the fourth RF antenna interface.

[0014] Furthermore, the power of the plurality of attenuator modules connected between the inlet end and the outlet end increases successively from the end adjacent to the outlet end to the end adjacent to the inlet end.

[0015] The beneficial effects of the present invention are as follows: through the new technical solution of the present invention, the attenuator group can be tested by manual matching and connection, which facilitates the maintenance of the test equipment. The test time of a single channel of the Dynamic Frequency Selection (DFS) test is about 25 minutes. After using this device, the test time can be shortened by 8 minutes. Similarly, it is also applicable to other channels that need to be tested, thereby achieving the beneficial effect of greatly improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an adjustable attenuator group device for radio frequency testing according to an embodiment of the present utility model;

[0018] In the figure: 1. First RF antenna interface; 2. Second RF antenna interface; 3. Third RF antenna interface; 4. Fourth RF antenna interface; 5. Inlet end; 6. Outlet end; 7. Device under test; 8. Electronic air pressure controller; 9. Switch box; 10. Test system; 11. RF cable; 12. Interface board; 13. Attenuator module. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0020] It should be understood that in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0021] like Figure 1 As shown, an adjustable attenuator group device for radio frequency testing according to an embodiment of the present utility model includes a plurality of attenuator modules 13, and radio frequency cables 11 forming a passage or a closed circuit through an electronic air pressure controller 8 between different attenuator modules 13, and different attenuator modules 13 are connected in series individually or in multiples, and each of the attenuator modules 13 includes a plurality of attenuators of the same type and size, and a plurality of attenuators of the same type and size in the same attenuator module 13 are connected individually or in multiples through a radio frequency antenna interface.

[0022] According to an embodiment of the present invention, an adjustable attenuator group device for radio frequency testing is described. In a specific embodiment, the two sides of a plurality of attenuator modules 13 are respectively an inlet end 5 and an outlet end 6, the other end of the inlet end 5 is connected to the device under test 7, and the other end of the outlet end 6 is connected to the switch box 9 and the test system 10.

[0023] According to an embodiment of the present invention, an adjustable attenuator group device for radio frequency testing is described. In a specific embodiment, the number of attenuator modules 13 is six, and the number of attenuators of the same type and size in each group of attenuator modules 13 is three.

[0024] According to an embodiment of the present invention, an adjustable attenuator group device for radio frequency testing is described. In a specific embodiment, the attenuators of the same type and size in the six groups of attenuator modules 13 are respectively a 1dBm attenuator, a 3dBm attenuator, a 6dBm attenuator, a 10dBm attenuator, a 20dBm attenuator and a 40dBm attenuator.

[0025] According to an embodiment of the present invention, an adjustable attenuator group device for radio frequency testing is described. In a specific embodiment, the radio frequency antenna interfaces connected to several attenuators of the same type and size in the same attenuator module 13 are all arranged on the interface board 12.

[0026] According to an embodiment of the present invention, an adjustable attenuator group device for radio frequency testing is described. In a specific embodiment, at least one attenuator module 13 is connected between the inlet port 5 and the outlet port 6, and at least one attenuator in the connected attenuator module 13 is connected.

[0027] According to an embodiment of the present invention, an adjustable attenuator group device for radio frequency testing is described. In a specific embodiment, several attenuators of the same type and size included in the attenuator module 13 are all interlocked and connected through the first radio frequency antenna interface 1, the second radio frequency antenna interface 2, the third radio frequency antenna interface 3, and the fourth radio frequency antenna interface 4.

[0028] According to an embodiment of the present invention, an adjustable attenuator group device for radio frequency testing, in a specific embodiment, the power of the plurality of attenuator modules 13 connected between the inlet end 5 and the outlet end 6 increases successively from the end adjacent to the outlet end 6 to the end adjacent to the inlet end 5.

[0029] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0030] In specific use, according to the utility model, an adjustable attenuator group device for radio frequency testing includes a radio frequency cable 11, an electronic air pressure controller 8, an interface board 12, and attenuators of different attenuation sizes. The attenuators of different attenuation sizes are connected through the electronic air pressure controller 8 to avoid wear or damage to the interfaces between the attenuators during the mutual connection process, which causes distortion of the passing signal. Through the automatic control system, the purpose of achieving connection through the radio frequency cable 11 after inputting the attenuator of the corresponding sequence is achieved, so that the signal after passing through the device is attenuated to meet the standard requirements.

[0031] The attenuator group device is connected between the device to be tested 7 and the switch box 9, and the electronic air pressure controller 8 is controlled by a manual button to achieve the series connection of a single or multiple attenuator modules 13. The series connection method of the attenuator module 13 selects at least one attenuator module or the series connection of all six attenuator modules according to the actual attenuation size requirements, or selects a series combination of any number between one and six, thereby realizing the attenuation of the signal from the input end 5 to the output end 6. Among them, attenuators of the same type and size in each attenuator module 13 can also be connected through the RF antenna interface on the interface board 12, and a single or multiple attenuators of the same type and size can be connected in a snap-fit ​​manner, so that the signal passing through meets the standard requirements, and then the Dynamic Frequency Selection (DFS) test of the RF Wi-Fi 5G conduction part is performed through the test system 10, wherein components 1, 2, 3 and 4 are respectively the first RF antenna interface, the second RF antenna interface, the third RF antenna interface and the fourth RF antenna interface that can be snapped together to achieve faster attenuator matching testing, save test time, and avoid wear or damage to the test equipment interface when replacing the filter back and forth once, resulting in errors in the test results.

[0032] This device is primarily suitable for the Dynamic Frequency Selection (DFS) test item of the RF conduction part. The device's support has been verified in actual tests. When the device is not used, the required signal size needs to be attenuated to a size that meets the standard requirements through multiple attenuators. After testing the same device under test seven times using the device, the same function can be achieved simply and quickly by snapping it together. The test results after the test meet the standard requirements, confirming that adding the device test can shorten the test time.

[0033] To sum up, with the help of the above-mentioned technical solution of the present invention, the new technical solution of the present invention allows the attenuator group to be tested by manual matching and connection, which facilitates the maintenance of the test equipment. The test time of a single channel of the Dynamic Frequency Selection (DFS) test is about 25 minutes. After using this device, the test time can be shortened by 8 minutes. Similarly, it is also applicable to other channels that need to be tested, thereby achieving the beneficial effect of greatly improving the test efficiency.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable attenuator group device for radio frequency testing, characterized in that: The invention comprises a plurality of attenuator modules (13), wherein different attenuator modules (13) are connected to each other through an electronic air pressure controller (8) to form a radio frequency cable (11) with a passage or a closed circuit, and the different attenuator modules (13) are connected in series singly or in multiples, and each of the attenuator modules (13) comprises a plurality of attenuators of the same type and size, and the plurality of attenuators of the same type and size in the same attenuator module (13) are connected singly or in multiples through a radio frequency antenna interface.

2. The adjustable attenuator group device for radio frequency testing according to claim 1, characterized in that: The two sides of the plurality of attenuator modules (13) are an inlet end (5) and an outlet end (6), respectively. The other end of the inlet end (5) is connected to the device to be tested (7), and the other end of the outlet end (6) is connected to the switch box (9) and the test system (10).

3. The adjustable attenuator group device for radio frequency testing according to claim 1, characterized in that: The number of attenuator modules (13) provided is six, and the number of attenuators of the same type and size provided in each group of attenuator modules (13) is three.

4. The adjustable attenuator group device for radio frequency testing according to claim 3, characterized in that: The attenuators of the same type and size in the six groups of attenuator modules (13) are respectively a 1 dBm attenuator, a 3 dBm attenuator, a 6 dBm attenuator, a 10 dBm attenuator, a 20 dBm attenuator and a 40 dBm attenuator.

5. The adjustable attenuator group device for radio frequency testing according to claim 1, characterized in that: The radio frequency antenna interfaces connected to a plurality of attenuators of the same type and size within the same attenuator module (13) are all arranged on the interface board (12).

6. The adjustable attenuator group device for radio frequency testing according to claim 2, characterized in that: At least one attenuator module (13) is connected between the inlet end (5) and the outlet end (6), and at least one attenuator in the connected attenuator module (13) is connected.

7. The adjustable attenuator group device for radio frequency testing according to claim 1, characterized in that: The plurality of attenuators of the same type and size included in the attenuator module (13) are all interlocked and connected via a first radio frequency antenna interface (1), a second radio frequency antenna interface (2), a third radio frequency antenna interface (3), and a fourth radio frequency antenna interface (4).

8. The adjustable attenuator group device for radio frequency testing according to claim 2, characterized in that: The power of the plurality of attenuator modules (13) connected between the inlet end (5) and the outlet end (6) increases successively from the end adjacent to the outlet end (6) to the end adjacent to the inlet end (5).

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