CN207717872U - Antenna test device and antenna test system - Google Patents

Abstract

The utility model discloses an antenna testing arrangement, include: two network interfaces; a plurality of test ports; a radio frequency matrix switch; and a control panel; the radio frequency matrix switch is provided with switch channels, the number of the switch channels is twice that of the test ports, one network branch interface is electrically connected with each test port through half of the number of the switch channels, the other network branch interface is electrically connected with each test port through the other half of the number of the switch channels, and the control board is respectively electrically connected with each switch channel to conduct the corresponding switch channels according to a control strategy. The utility model also discloses an antenna test system. By the implementation mode, more test ports can be provided, so that the multi-beam and/or multi-port radio frequency device can be conveniently and rapidly tested automatically, and the test efficiency is improved.

Description

Antenna test device and antenna test system

technical field

The utility model relates to the technical field of wireless communication, in particular to an antenna testing device and an antenna testing system.

Background technique

In recent years, with the development of 5G, radar and new satellites, multi-beam multi-band and multi-port RF devices have become one of the focus technologies in the industry, and with the development of new RF devices and antennas, new test systems have brought challenges .

Faced with the testing of these new products, the current solution manufacturers mostly use antenna test devices with a small number of ports for manual testing or semi-automatic auxiliary tooling testing methods. Faced with multi-beam switching, multi-port, especially electronically adjusted multi-state antennas, it is basically done manually. Switching, and some complex antennas even take dozens of hours to complete the test.

Utility model content

The utility model provides an antenna test device and an antenna test system to solve the above technical problems, which can provide more test ports, and then can conveniently and quickly perform automatic tests on multi-beam and/or multi-port radio frequency devices, improving test efficiency .

In order to solve the above-mentioned technical problems, the utility model provides a kind of antenna testing device, comprises: a network sub-interface; several test ports; radio frequency matrix switch; and control board; Twice the number of switch channels, wherein, one of the network sub-interfaces is electrically connected to each of the test ports through half the number of switch channels, and the other half of the number of switch channels is used between the other said network sub-interface and each of the test ports. The switch channels are electrically connected to each other, and the control board is electrically connected to each of the switch channels to turn on the corresponding switch channels according to the control strategy.

Further, the radio frequency matrix switch includes two sets of switch assemblies, each set of switch assemblies is formed by cascading a plurality of switches with one input and multiple outputs, and is electrically connected to one of the network sub-interfaces and each of the test Half of the switch channels between the ports, the switch channels formed by cascading the same group of switch components are connected in parallel, and the control board is electrically connected to each switch.

Further, the radio frequency matrix switch also includes a group of 1-cut-2 switches whose number is the same as the number of the test ports, and in each of the 1-cut-2 switches, its common terminal is electrically connected to one of the test ports, and one of the One end of the non-common end is electrically connected to the other end of a switch channel of one of the network sub-interfaces, and the other non-common end is electrically connected to one of the switch channels of the other said network sub-interface The other end is electrically connected, and the control board is further electrically connected to each of the 1-to-2 switches.

Further, the number of test ports is 36N, and N is an integer greater than or equal to 1; the radio frequency matrix switch includes each group consisting of 1 first-level 1-cut 6N switch and 6 second-level 1-cut 6N switches The two groups of switch assemblies formed also include 36N 1-to-2 switches at the third level; The interface and the 6 non-common terminals are respectively electrically connected to the common terminals of the 1-to-6N switches of the second level, and the non-common terminals of the 1-to-6N switches of the second level are respectively electrically connected to the 1-to-6N switches of the third level. A non-common end of the 2-cut switch, the common end of each 1-cut 2 switch of the third level is electrically connected to one of the test ports, and the control board is electrically connected to the switches of each level.

Further, the number of test ports is 36, and the 1-cut 6N switch of the first level and the 1-cut 6N switch of the second level are both 1-cut 6 switches.

Further, each switch in the radio frequency matrix switch is a mechanical switch; the switch uses an N-type joint switch.

Further, the antenna test device includes a box body, the radio frequency matrix switch and the control board are installed in the box body, and the network sub-interface and the test port are both arranged on the panel of the box body The network port electrically connected with the control board and used for electrical connection with the upper electromechanical device is arranged on the back panel of the box body.

Further, the test ports are uniformly arranged on the panel of the box, and the distance between adjacent test ports is greater than 5 cm.

Further, each of the network sub-interfaces is provided with a monochrome indicator light electrically connected to the control board, and the monochrome indicator lights corresponding to different network sub-interfaces are lit in different colors; each of the test A two-color indicator light electrically connected to the control board is provided at the port, and the two-color indicator light displays the same color as the network sub-interface when it is lit according to the network sub-interface that is conducted by the test port.

In order to solve the above technical problems, the utility model provides an antenna test system, including: the antenna test device as described in any one of the above embodiments; a network analyzer; and a host computer; the network interface of the antenna test device and The network analyzer is electrically connected, the control board of the antenna testing device is electrically connected to the host computer, and the host computer is electrically connected to the network analyzer.

The antenna testing device and the antenna testing system of the present utility model have the following beneficial effects:

By setting the RF matrix switch between the network sub-interface and multiple test interfaces, a multi-port antenna test device can be realized, and then the automatic test of multi-beam and/or multi-port RF devices can be performed conveniently and quickly, and the test efficiency is improved. .

Description of drawings

Fig. 1 is a front view of the antenna testing device of the present invention.

FIG. 2 is a front view of the antenna testing device shown in FIG. 1 .

FIG. 3 is a schematic diagram of the internal structure of the antenna testing device shown in FIG. 1 .

FIG. 4 is a rear view of the antenna testing device shown in FIG. 1 .

FIG. 5 is a topological structure diagram of a radio frequency matrix switch in the antenna testing device shown in FIG. 1 .

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to FIG. 1 to FIG. 5 , the utility model provides an antenna testing device. The antenna test device includes: two network sub-interfaces 2 ; several test ports 3 ; a radio frequency matrix switch 4 ; and a control board 5 . The control board 5 may be, for example, an ARM control board or other forms of control boards. For example, the number of test ports 3 can usually be greater than 18, and of course it can also be other numbers.

Specifically, the radio frequency matrix switch 4 is formed with switch channels twice as many as the test ports 3 . One network sub-interface 2 is electrically connected to each test port 3 through half the number of switch channels, and the other network sub-interface 2 is electrically connected to each test port 3 through the other half number of switch channels. That is to say, the radio frequency matrix switch 4 forms a total of two input ends (respectively electrically connected to a network sub-interface 2 ) and twice as many output ends as the test port 3 (respectively electrically connected to a test port 3 ). The control board 5 is electrically connected to each switch channel to turn on the corresponding switch channel according to the control strategy, that is, to turn on the corresponding network sub-interface 2 and test port 3 . Of course, the radio frequency matrix switch 4 has slightly more than twice the number of switch channels of the test port 3 to provide expansion possibilities.

In a specific embodiment, referring to FIG. 5 , the radio frequency matrix switch 4 includes two sets of switch components 41 . Each group of switch components 41 consists of a plurality of switches with one input and multiple outputs cascaded to form half the number of switch channels electrically connected between a sub-interface 2 and each test port 3 . Wherein, the switching channels formed by cascading the same group of switching components 41 are connected in parallel. The control board 5 is electrically connected to each switch, and realizes conduction of the corresponding switch channel by controlling the opening and closing of the corresponding switch.

Preferably, continuing to refer to FIG. 5 , the radio frequency matrix switch 4 further includes another set of switch components 42 . The set of switch assemblies 42 includes 1-to-2 switches 421 having the same number as the test ports 3 . Each 1-to-2 switch 421 includes a common end and two non-common ends, its common end is electrically connected to a test port 3, and its non-common end is electrically connected to a switch channel of a network sub-interface 2 The other end is electrically connected, and the other non-common end thereof is electrically connected to the other end of a switching channel whose one end is electrically connected to another sub-interface 2 . The control board 5 is further electrically connected to each 1-to-2 switch 421 . Through the design of the group of 1-to-2 switches 421, it can effectively prevent the same test port 3 from being turned on to two different network sub-interfaces 2 at the same time to affect the test.

All the switches involved in the above embodiments can be mechanical switches, so as to avoid the problems of large power and insertion loss when electronic switches are used. Furthermore, each switch can usually use N-type connectors to facilitate installation.

In a specific embodiment, continue to refer to FIG. 5 , the number of test ports 3 is 36N, and N is an integer greater than or equal to 1, so as to meet the multi-beam and/or multi-port test of new 4G and 5G antennas. Preferably, 1≤N≤3.

Specifically, the radio frequency matrix switch 4 includes two groups of switch assemblies 41 each consisting of one 1-cut 6N switch 411 at the first level and six 1-cut 6N switches 412 at the second level. A group of switch components 42 composed of 36N 1-to-2 switches 421 in three levels. Wherein, in the same switch assembly 41, the common end of the 1-cut-6 switch of the first level is electrically connected to a network sub-interface 2, and the 6 non-common ends are respectively electrically connected to the common end of the 1-cut 6N switch 412 of the second level, The non-common ends of the 1-to-6N switch 412 of the second level are respectively electrically connected to a non-common end of a third-level 1-to-2 switch 421 in another group of switch components 42 , thereby realizing 36N switch channels. Further, the common end of each third-level 1-to-2 switch 421 is electrically connected to a test port 3 . The control board 5 is electrically connected to the switches of each level.

For example, when N=1, the number of test ports 3 is 36, and the 1-to-6N switch 411 of the first level and the 1-to-6N switch 412 of the second level are both 1-to-6 switches.

In a specific embodiment, referring to FIG. 1 to FIG. 4 , the antenna testing device further includes a box body 1 . The radio frequency matrix switch 4 and the control board 5 are installed in the box body 1 . The network sub-interface 2 and the test port 3 are both arranged on the panel 11 of the box body 1 . Preferably, the distance between adjacent test ports 3 is usually set to be greater than 5 cm to ensure installation convenience and improve stability, wherein the isolation between adjacent test ports 3 is greater than 60 dB, typically greater than 120 dB. In addition, the test ports 3 are usually uniformly arranged on the top of the panel 11, and the network interface 2 is usually arranged on the bottom of the panel 11 to facilitate the deployment and connection of radio frequency cables.

Further, continue to refer to Fig. 1 to Fig. 4, the switching power supply 61 that is electrically connected with the control panel 5 and the radio frequency matrix switch 4 to provide power for it is also installed in the box body 1, the power button 62 that controls this switching power supply 61 to work Set on the bottom of the panel 11 , the switching power supply 61 has an external power interface 63 set on the back plate 12 of the cabinet 1 .

Further, continuing to refer to FIG. 1 to FIG. 4 , a network port 51 is also provided on the back panel 12 of the box body 1, and the network port 51 is electrically connected to the control board 5 for connecting with an external host computer, and then the control board 5 Receive and execute the control strategy (a series of operation instructions) sent by the host computer to test the antenna under test.

In addition, continuing to refer to FIG. 1 to FIG. 4 , in order to facilitate heat dissipation, a plurality of strip-shaped or other-shaped heat dissipation holes 121 are opened on the back of the box body 1 .

In a preferred embodiment, as shown in Figures 1 and 2, indicator lights are also provided on the panel 11 corresponding to the positions of the network sub-interfaces 2 and the test ports 3, and each indicator light is electrically connected to the control board 5 to indicate The conduction state of the corresponding port. Preferably, the indicator lights provided at the network sub-interface 2 places are monochrome indicator lights 21, and the indicator lights provided at different network sub-interfaces 2 places are monochrome indicator lights 21 of different colors; the indicator lights provided at each test port 3 places It is a two-color indicator light 31, which can display two colors, and the displayed colors correspond to the colors displayed by the single-color indicator light 21 of two different colors. For example, the indicator light of one network distribution interface 2 is a green indicator light, and the indicator light of the other network distribution interface 2 is a red indicator light. Correspondingly, the indicator lights of each test port 3 can display two colors of green and red. Specifically, when the test port 3 is connected to the network distribution interface 2 indicated by the green indicator light, its two-color indicator light 31 is bright green; when the test port 3 is connected to the network distribution interface 2 indicated by the red indicator light, its two-color indicator light 31 Lights up in red; when the test port 3 is not connected, the light does not light up. In this way, the tester can intuitively and clearly know which test port 3 is connected and which network sub-interface 2 the test port 3 is connected to.

In a preferred embodiment, each test port 3 can be labeled to conveniently indicate that it is electrically connected to each port corresponding to a radio frequency device such as an antenna.

Wherein, when testing a certain parameter (such as a return loss parameter) of the antenna, each half of the number of test ports 3 uses a different network sub-interface 2 , so as to ensure the maximum service life of the switch. That is, half of the test port 3 is connected to one network sub-interface 2, and half of the test port 3 is connected to the other network sub-interface 2, so as to avoid the probability that the switch is turned on to a certain side, so that each channel of the switch is turned on The number of times should be as uniform as possible to ensure the service life of the switch.

The utility model also provides an antenna testing system. The antenna testing system includes the antenna testing device described in any one of the above embodiments, and also includes a network analyzer electrically connected to the network interface 2 in the antenna testing device, and a network analyzer electrically connected to the control board 5 in the antenna testing device A host computer, and the host computer is electrically connected to the network analyzer.

When testing radio frequency devices such as multi-beam and/or multi-port antennas and radars, the tester connects the object under test and the test port 3 in the antenna test device in advance, and then sets the control strategy in the host computer, and then the antenna test The device automatically switches ports according to the control strategy to complete relevant tests, replacing the cumbersome process of manually switching test ports 3 in traditional technology and improving test efficiency. The host computer can also control the network analyzer to perform multi-frequency switching test.

The antenna testing device and the antenna testing system of the present utility model have the following beneficial effects:

By setting the radio frequency matrix switch 4 between the network sub-interface 2 and a plurality of test interfaces, a multi-port antenna test device can be realized, and then the multi-beam and/or multi-port radio frequency devices can be automatically tested conveniently and quickly, improving the Test efficiency.

The above are only embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process conversion made by using the description of the utility model and the contents of the accompanying drawings, or directly or indirectly used in other related Technical fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. An antenna testing device, characterized in that, comprising: Two network sub-interfaces; Several test ports; RF matrix switch; and the control panel; The radio frequency matrix switch is formed with a number of switch channels that is twice the number of the test ports, wherein one of the network sub-interfaces is electrically connected to each of the test ports through half the number of switch channels, and the other network The sub-interface is electrically connected to each of the test ports through the other half of the number of switch channels, and the control board is electrically connected to each of the switch channels to conduct the corresponding switch channels according to the control strategy. 2. Antenna testing device according to claim 1, characterized in that: The radio frequency matrix switch includes two sets of switch assemblies, each set of switch assemblies is formed by cascading a plurality of switches with one input and multiple outputs, and is electrically connected between one of the network sub-interfaces and each of the test ports Half of the number of switch channels, the switch channels formed by cascading the same group of switch components are connected in parallel, and the control board is electrically connected to each switch. 3. Antenna testing device according to claim 2, characterized in that: The radio frequency matrix switch also includes a group of 1-cut-2 switches with the same number as the number of the test ports. In each of the 1-cut 2 switches, its common end is electrically connected to a described test port, and its non-common end One end is electrically connected to the other end of a switch channel of a said network distribution interface, and its other non-common end is electrically connected to the other end of a said switch channel of another said network distribution interface Electrically connected, the control board is further electrically connected to each of the 1-to-2 switches. 4. Antenna testing device according to claim 3, characterized in that: The number of test ports is 36N, and N is an integer greater than or equal to 1; The radio frequency matrix switch includes two groups of switch assemblies each consisting of one 1-cut 6N switch of the first level and six 1-cut 6N switches of the second level, and also includes 36N 1-cut 6N switches of the third level 2 switches; In the same switch assembly, the common end of the 1-to-6 switch of the first level is electrically connected to the network sub-interface, and the 6 non-common ends are respectively electrically connected to the 1-to-6N switch of the second level. The common end, the non-common end of the 1-to-6N switch of the second level is electrically connected to a non-common end of the 1-to-2 switch of the third level, each of the 1-to-2 switches of the third level The common terminals are respectively electrically connected to one of the test ports, and the control board is electrically connected to the switches of each level. 5. Antenna testing device according to claim 4, characterized in that: The number of test ports is 36, and the 1-cut 6N switch of the first level and the 1-cut 6N switch of the second level are both 1-cut 6 switches. 6. The antenna testing device according to claim 3, characterized in that: Each switch in the radio frequency matrix switch is a mechanical switch; The switch uses an N-type tap switch. 7. The antenna testing device according to claim 1, characterized in that: The antenna test device includes a box body, the radio frequency matrix switch and the control board are installed in the box body, the network sub-interface and the test port are all arranged on the panel of the box body, and the The network port electrically connected to the control board and used for electrical connection with the upper machine is set on the back panel of the box. 8. The antenna testing device according to claim 7, characterized in that: The test ports are uniformly arranged on the panel of the box, and the distance between adjacent test ports is greater than 5 cm. 9. The antenna testing device according to claim 1, characterized in that: Each of the network sub-interfaces is provided with a monochrome indicator light electrically connected to the control board, and the monochrome indicator lights corresponding to different network sub-interfaces are lit in different colors; Each of the test ports is provided with a two-color indicator light that is electrically connected to the control board, and when the two-color indicator light is lit according to the network sub-interface that the test port is connected to, it displays the same as the network sub-interface. s color. 10. An antenna testing system, comprising: The antenna testing device according to any one of claims 1 to 9; Network Analyzer; and host computer; The network sub-interface of the antenna testing device is electrically connected to the network analyzer, the control board of the antenna testing device is electrically connected to a host computer, and the host computer is electrically connected to the network analyzer.