CN103780314A - Radio frequency characteristic test device - Google Patents

Abstract

A radio frequency characteristic test equipment, which is used to test the radio frequency characteristics of a plurality of communication circuit boards, which includes: a plurality of clamping devices for fixing a plurality of communication circuit boards; a network analyzer, a switching box and a result display device . The switching box is electrically connected between the clamping device and the network analyzer, and is used to sequentially switch and connect a plurality of communication circuit boards to the network analyzer. The network analyzer is used to sequentially detect the communication circuit boards in the clamping device after switching. The result display device is electrically connected to the network analyzer, and the result display device is used to simultaneously display the detection results of multiple communication circuit boards. The radio frequency characteristic testing equipment of the present invention can simultaneously test the radio frequency characteristics of multiple communication circuit boards.

Description

RF Characteristic Test Equipment

technical field

The invention relates to a radio frequency characteristic testing device.

Background technique

In modern networks, good radio frequency characteristics are the key to the effective operation of mobile phones. The current size of mobile phones is getting smaller and smaller, often compromising the radiation characteristics. Therefore, it is particularly important to detect the radio frequency characteristics of the flexible circuit board with radio frequency (RF) antenna in the mobile phone. Existing radio frequency characteristic testing equipment generally includes a network analyzer and a clamping device. The flexible circuit board to be tested is fixed in the holding device. The flexible circuit board to be tested is electrically connected with the network analyzer through a connection line. However, the network analyzer in the existing radio frequency characteristic test equipment can only test a flexible circuit board. If it is necessary to detect the radio frequency characteristics of multiple flexible circuit boards at the same time, multiple network analyzers are required.

Contents of the invention

In view of this, it is necessary to provide a radio frequency characteristic testing device that can simultaneously test the radio frequency characteristics of multiple communication circuit boards.

A radio frequency characteristic testing device is used for testing radio frequency characteristics of a plurality of communication circuit boards. The radio frequency characteristic test equipment includes: a plurality of clamping devices, a switching box, a network analyzer, and a result display device. The exchange box is electrically connected between the clamping device and the network analyzer. The exchange box includes a plurality of first signal connectors, a second signal connector and a switching switch. The plurality of first signal connectors are respectively electrically connected to a clamping device. The switching switch is electrically connected to both the second signal connector and the first signal connector. The second signal connector is electrically connected to the network analyzer. The clamping device is used for clamping a plurality of communication circuit boards to be tested, and simultaneously used for transmitting the radio frequency characteristics of the plurality of communication circuit boards to be tested to the switching box. The switching switch is used to switch a plurality of the first signal connectors, so that the switched first signal connectors are electrically connected to the second signal connectors, so that the switched first signal connectors in the holding device corresponding to The communication circuit board is electrically connected with the network analyzer through the second signal connector. The network analyzer is used to detect the radio frequency characteristics of the communication circuit board in the clamping device after switching. The result display device is electrically connected to the network analyzer, and the result display device is used to simultaneously display the detection results of multiple communication circuit boards.

Compared with the prior art, the radio frequency characteristic testing equipment switches the first signal connector through the switch of the switching box, so that the switched first signal connector is electrically connected to the second signal connector through the switch, Therefore, the network analyzer can sequentially test the communication circuit board in the clamping device corresponding to the switched first signal connector. In this way, multiple communication circuit boards can be tested with only one network analyzer.

Description of drawings

FIG. 1 is a schematic diagram of a radio frequency characteristic testing device provided by an embodiment of the present invention.

FIG. 2 is a schematic diagram of a clamping device of the radio frequency characteristic testing equipment in FIG. 1 .

Description of main component symbols

RF Characteristic Test Equipment 100 Flexible circuit board with RF antenna 200 Clamping device 10 swap box 20 Network Analyzer 30 Result display device 40 storage tank 11 telescopic rod 12 signal port 13 first signal connector twenty one Second signal connector twenty two cable 25 The third signal connector 31 Fourth signal connector 32 display screen 33 host computer 41 monitor 42

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , a radio frequency characteristic testing device 100 provided by an embodiment of the present invention is used for testing radio frequency characteristics of multiple communication circuit boards. In this embodiment, the radio frequency characteristic testing device 100 is used for testing radio frequency characteristics of a plurality of flexible circuit boards 200 with radio frequency antennas. The radio frequency characteristic testing equipment 100 includes a plurality of clamping devices 10 , a switching box (switching box) 20 , a network analyzer 30 , and a result display device 40 .

Please also refer to FIG. 2 , each of the clamping devices 10 has a receiving groove 11 . The shape of the receiving groove 11 corresponds to that of the flexible circuit board 200 . Each of the accommodating grooves 11 is used for accommodating a flexible circuit board 200 respectively. In this embodiment, the number of the clamping devices 10 is 8, which are respectively used to fix 8 flexible circuit boards 200 . Two opposite sides of each of the receiving slots 11 are respectively provided with a telescopic rod 12 that can expand and contract in the receiving slots 11 . The clamping device 10 also includes a signal port 13 .

The switching box 20 includes a plurality of first signal connectors 21 , a second signal connector 22 and a switching switch 23 . The number of the plurality of first signal connectors 21 is the same as the number of the clamping device 10 , and each first signal connector 21 is marked with numbers 1-8 respectively. One ends of the plurality of first signal connectors 21 are electrically connected to a signal port 13 of the clamping device 10 through a connection wire 25 . The clamping device 10 transmits the radio frequency characteristics of the multiple flexible printed circuit boards 200 to be tested to the switch box 20 through the signal port 13 , the multiple first signal connectors 21 and the connecting wires 25 . The other ends of the plurality of first signal connectors 21 are electrically connected to the switching switch 23 . The switching switch 23 is electrically connected to the second signal connector 22 at the same time. The changeover switch 23 is used to switch the first signal connector 21 sequentially according to the numerical sequence marked above the first signal connector 21 from small to large, so that the switched first signal connector 21 and the second signal connector 22 electrical connections. In this embodiment, the switching time interval of the switching switch 23 is 1 second. It can be understood that the switching time interval of the switching switch 23 can also be set according to design requirements.

The network analyzer 30 includes a third signal connector 31 and a fourth signal connector 32 . The third signal connector 31 is electrically connected to the second signal connector 22 of the switch box 20 through a connection wire 25 . The network analyzer 30 also includes a display screen 33 for displaying the radio frequency characteristic curve of the flexible circuit board 200 detected by the network analyzer 30 . The network analyzer 30 stores standard radio frequency characteristic parameter value ranges (such as the start frequency and stop frequency of the radio frequency characteristic curve). When the parameters corresponding to the radio frequency characteristic graph of the flexible printed circuit board 200 detected by the network analyzer 30 fall within the standard radio frequency characteristic parameter range, the detected radio frequency characteristic of the flexible printed circuit board 200 Pass, otherwise, fail.

The result display device 40 includes a computer host 41 and a display 42 . The computer host 41 is electrically connected to the fourth signal connector 32 of the network analyzer 30 and the display 42 respectively. The result display device 40 is used to simultaneously display the test results of eight flexible printed circuit boards 200 on the display 42 .

During detection, first, the changeover switch 23 of the exchange box 20 switches the first signal connectors 21 sequentially from small to large according to the numerical order marked above the first signal connector 21, so that the switched first signal connectors 21 The switching switch 23 is electrically connected to the second signal connector 22, so the network analyzer 30 can control the flexible circuit board in the clamping device 10 corresponding to the switched first signal connector 21. 200 for detection. Then, the network analyzer 30 outputs the detection result to the result display device 40 . The result display device 40 simultaneously displays the test results of eight flexible printed circuit boards 200 on the display 42 . When the result display device 40 shows that the test results of one or more flexible circuit boards 200 are unqualified, the computer host 41 sends a control signal, which is transmitted to the network analyzer 30 and the switch box 20 The signal port 13 of the clamping device 10 corresponding to the unqualified flexible circuit board 200 makes the telescopic rod 12 protrude from the receiving groove 11 to clamp the unqualified flexible circuit board 200 to remind the tester , the clamped flexible circuit board 200 is a failed product.

The radio frequency characteristic testing device 100 switches the first signal connector 21 through the switch 23 of the switch box 20, so that the switched first signal connector 21 is electrically connected to the second signal connector 22 through the switch 23, Therefore, the network analyzer 30 can sequentially detect the flexible circuit board 200 in the clamping device 10 corresponding to the switched first signal connector 21 . In this way, only one network analyzer 30 is needed to test multiple flexible printed circuit boards 200 .

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should all be included within the scope of protection claimed by the present invention.

Claims (10)

1. A radio frequency characteristic testing equipment, it is used for testing the radio frequency characteristic of a plurality of communication circuit boards, it is characterized in that: described radio frequency characteristic testing equipment comprises: a plurality of clamping devices, a switching box, a network analyzer, and A result display device, the switch box is electrically connected between the clamping device and the network analyzer, the switch box includes a plurality of first signal connectors, a second signal connector and a switch, the The plurality of first signal connectors are respectively electrically connected to a clamping device, the switch is electrically connected to both the second signal connector and the first signal connector, and the second signal connector is electrically connected to the In the network analyzer, the clamping device is used to clamp a plurality of communication circuit boards to be tested, and is simultaneously used to transmit the radio frequency characteristics of the plurality of communication circuit boards to be tested to the exchange box, and the switch is used When switching a plurality of the first signal connectors, electrically connect the switched first signal connectors to the second signal connectors, so that the communication circuit board in the clamping device corresponding to the switched first signal connectors passes through the The second signal connector is electrically connected to a network analyzer, and the network analyzer is used to detect the radio frequency characteristics of the communication circuit board in the clamping device after switching, and the result display device is connected to the network analyzer The instrument is electrically connected, and the result display device is used to simultaneously display the detection results of multiple communication circuit boards. 2. The radio frequency characteristic testing device according to claim 1, wherein the communication circuit board is a flexible circuit board with a radio frequency antenna. 3. The radio frequency characteristic testing equipment as claimed in claim 1, wherein: each of the clamping devices has a receiving groove, the shape of the receiving groove corresponds to the flexible circuit board, each of the The accommodating slots are respectively used for accommodating a communication circuit board. 4. The radio frequency characteristic testing device according to claim 3, wherein the input ends of the plurality of first signal connectors are respectively connected to a signal port electrically connected to one of the clamping devices through a connecting wire electrical connection. 5. The radio frequency characteristic testing device as claimed in claim 4, characterized in that: two opposite sides of each of the storage tanks are respectively provided with a telescopic rod capable of stretching in the storage tank, when the result shows When the device shows that the test results of one or more communication circuit boards are unqualified, the computer host sends a control signal, which is transmitted to the clamping device corresponding to the unqualified communication circuit board through the network analyzer and the switch box the signal port, so that the telescopic rod protrudes from the receiving groove to clamp the unqualified communication circuit board. 6. The radio frequency characteristic testing device according to claim 1, wherein the number of the plurality of first signal input connectors is the same as the number of the clamping devices. 7. The radio frequency characteristic testing device according to claim 1, characterized in that: the top of each of the first signal input connectors is respectively marked with a number, and the switch is used to press the number marked on the top of the first signal connector. In digital order, the first signal connectors are switched sequentially from small to large, so that the switched first signal connectors are electrically connected to the second signal connectors. 8. The radio frequency characteristic testing equipment as claimed in claim 1, characterized in that: said network analyzer comprises a third signal connector and a fourth signal connector, said third signal connector is connected to said switching box by connecting wire The second signal output connector of the network analyzer is electrically connected, and the result display device includes a computer host and a display, and the computer host is electrically connected to the fourth signal connector of the network analyzer and the display, respectively. 9. The radio frequency characteristic testing equipment as claimed in claim 1, wherein: the network analyzer also includes a display screen, which is used to display the radio frequency characteristic curve of the communication circuit board detected by the network analyzer . 10. The radio frequency characteristic testing equipment as claimed in claim 1, is characterized in that: described network analyzer stores the radio frequency characteristic parameter of standard, when the radio frequency characteristic curve diagram of the described communication circuit board that described network analyzer detects When the corresponding parameter falls within the range of the standard radio frequency characteristic parameter, the radio frequency characteristic of the communication circuit board to be detected is qualified; otherwise, it is unqualified.

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