TWI493904B - Radiofrequency characteristic testing equipment - Google Patents

Description

RF characteristic test equipment

The invention relates to a radio frequency characteristic testing device.

In modern networks, good RF characteristics are key to the effective operation of mobile phones. At present, the size of mobile phones is getting smaller and smaller, and there are often cases where the radiation characteristics are compromised. Therefore, it is particularly important to detect the radio frequency characteristics of a flexible circuit board with a radio frequency (RF) antenna in a mobile phone. The existing RF characteristic test equipment generally includes a network analyzer and a clamping device. The flexible circuit board to be tested is fixed in the clamping device. The flexible circuit board to be tested is electrically connected to the network analyzer by a connection line. However, the network analyzer in the existing RF characteristics test equipment can only test one flexible circuit board. If you need to detect the RF characteristics of multiple flexible boards at the same time, you need multiple network analyzers.

In view of the above, it is necessary to provide a radio frequency characteristic test device capable of simultaneously testing the radio frequency characteristics of a plurality of communication boards.

A radio frequency characteristic testing device for testing radio frequency characteristics of a plurality of communication circuit boards. The radio frequency characteristic testing device 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 switch box includes a plurality of first signal connectors, a second signal connector, and a switch. The plurality of first messages The connector is electrically connected to a clamping device. The switch is electrically connected to the second signal connector and the first signal connector. The second signal connector is electrically connected to the network analyzer. The clamping device is configured to hold a plurality of communication circuit boards to be tested, and simultaneously transmit the radio frequency characteristics of the plurality of communication circuit boards to be tested to the switch box. The switch is configured to switch a plurality of the first signal connectors to electrically connect the switched first signal connector and the second signal connector to enable the first signal connector corresponding to the switched device The communication circuit board is electrically connected to the network analyzer by the second signal connector. The network analyzer is configured to detect radio frequency characteristics of the communication circuit board in the switched clamping device. The result display device is electrically connected to the network analyzer, and the result display device is configured to simultaneously display detection results of the plurality of communication circuit boards.

Compared with the prior art, the radio frequency characteristic testing device switches the first signal connector by using a switching switch of the switch box, so that the switched first signal connector is electrically connected to the second signal connector by 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, a single network analyzer can be used to detect a plurality of communication boards.

100‧‧‧RF characteristic test equipment

200‧‧‧Soft circuit board with RF antenna

10‧‧‧Clamping device

20‧‧‧Switch box

30‧‧‧Network Analyzer

40‧‧‧Result display device

11‧‧‧ housing trough

12‧‧‧ Telescopic rod

13‧‧‧Signal port

21‧‧‧First signal connector

22‧‧‧second signal connector

23‧‧‧Toggle switch

25‧‧‧Connecting line

31‧‧‧Third signal connector

32‧‧‧fourth signal connector

33‧‧‧ display screen

41‧‧‧Computer host

42‧‧‧ display

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

2 is a schematic view of a clamping device of the radio frequency characteristic testing device of FIG. 1.

The technical solution will be further described in detail below with reference to the accompanying drawings and embodiments.

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

Referring to FIG. 2 together, each of the clamping devices 10 has a receiving slot 11. The shape of the receiving groove 11 corresponds to the flexible circuit board 200. Each of the receiving slots 11 is configured to receive a flexible circuit board 200. In the present embodiment, the number of the clamping devices 10 is eight, which are used to fix eight flexible circuit boards 200, respectively. Each of the opposite sides of each of the receiving slots 11 is provided with a telescopic rod 12 that can be telescoped in the receiving slot 11. The clamping device 10 also includes a signal port 13.

The switch box 20 includes a plurality of first signal connectors 21, a second signal connector 22, and a changeover switch 23. The number of the plurality of first signal connectors 21 is the same as the number of the clamping devices 10, and the digits 1-8 are respectively identified above each of the first signal connectors 21. One end of the plurality of first signal connectors 21 is electrically connected to the signal port 13 of the clamping device 10 via a connecting line 25, respectively. The clamping device 10 transmits the radio frequency characteristics of the plurality of flexible circuit boards 200 to be tested to the switching box 20 by the signal port 13 , the plurality of first signal connectors 21 and the connecting lines 25 . The other ends of the plurality of first signal connectors 21 are electrically connected to the switch 23 . The switch 23 is electrically connected to the second signal connector 22 at the same time. The switch 23 is configured to sequentially switch the first signal connector 21 from small to large according to the digit sequence identified above the first signal connector 21, so that the switched first signal connector 21 and the second signal connector are switched. 22 electrical connection. In this embodiment, the time interval at which the changeover switch 23 is switched is 1 second. It can be understood that the time interval for switching the 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 via a connecting line 25 . The network analyzer 30 further includes a display screen 33 for displaying a radio frequency characteristic diagram of the flexible circuit board 200 detected by the network analyzer 30. The network analyzer 30 stores a range of standard RF characteristic parameter values (such as the starting frequency and the ending frequency of the RF characteristic curve). When the parameter corresponding to the radio frequency characteristic diagram of the flexible circuit board 200 detected by the network analyzer 30 falls within the range of the standard radio frequency characteristic parameter, the radio frequency characteristic of the tested flexible circuit board 200 is qualified. Otherwise, it is unqualified.

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 for simultaneously displaying the detection results of the eight flexible circuit boards 200 on the display 42.

In the detection, first, the switch 23 of the switch box 20 sequentially switches the first signal connector 21 from small to large in the order of digits identified above the first signal connector 21, so that the switched first signal connector 21 is switched. The switch 23 is electrically connected to the second signal connector 22, so that the network analyzer 30 can be configured to the soft circuit in the clamping device 10 corresponding to the switched first signal connector 21. The board 200 performs detection. Then, the network analyzer 30 outputs the detection result to the result display device 40. The result display device 40 simultaneously displays the detection results of the eight flexible circuit boards 200 on the display 42. When the result display device 40 displays that the detection result of one or more of the flexible circuit boards 200 is unsatisfactory, the computer host 41 sends a control signal and transmits it to the switch box 20 through the network analyzer 30 to the switch box 20 The signal port 13 of the clamping device 10 corresponding to the unqualified flexible circuit board 200 enables the expansion and contraction The rod 12 protrudes from the receiving slot 11 to clamp the defective flexible circuit board 200 to prompt the tester that the clamped flexible circuit board 200 is a defective product.

The RF characteristic testing device 100 switches the first signal connector 21 by 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 by the switch 23 and the second signal connector 22 The network analyzer 30 can detect the flexible circuit board 200 in the clamping device 10 corresponding to the switched first signal connector 21 in sequence. Thus, a plurality of network boards 30 can be used to detect a plurality of flexible boards 200.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100‧‧‧RF characteristic test equipment

200‧‧‧Soft circuit board with RF antenna

10‧‧‧Clamping device

20‧‧‧Switch box

30‧‧‧Network Analyzer

40‧‧‧Result display device

21‧‧‧First signal connector

22‧‧‧second signal connector

23‧‧‧Toggle switch

25‧‧‧Connecting line

31‧‧‧Third signal connector

32‧‧‧fourth signal connector

33‧‧‧ display screen

41‧‧‧Computer host

42‧‧‧ display

Claims (8)

An RF characteristic testing device for testing radio frequency characteristics of a plurality of communication circuit boards, comprising: a plurality of clamping devices, a switching box, a network analyzer, and a result display device, wherein 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, and the plurality of first signal connectors are respectively electrically connected a clamping device, the switching switch is electrically connected to the second signal connector and the first signal connector, and the second signal connector is electrically connected to the network analyzer, the clamping device For holding a plurality of communication circuit boards to be tested, and simultaneously transmitting the radio frequency characteristics of the plurality of communication circuit boards to be tested to the switch box, the switch switches for switching a plurality of the first signal connectors The first signal connector after the switching is electrically connected to the second signal connector, so that the communication circuit board in the clamping device corresponding to the switched first signal connector is connected by the second signal connector The network analyzer is electrically connected, and the network analyzer is configured to detect a radio frequency characteristic of the communication circuit board in the switched clamping device, and the result display device is electrically connected to the network analyzer The result display device is configured to simultaneously display the detection results of the plurality of communication circuit boards; wherein each of the clamping devices has a receiving slot, and the receiving slot has a shape corresponding to the flexible circuit board, and each The receiving slot is configured to respectively receive a communication circuit board, and each of the opposite sides of each of the receiving slots is respectively provided with a telescopic rod that can be telescoped in the receiving slot, when the result display device displays one or When the detection result of the plurality of communication boards is unsatisfactory, the computer host sends a control signal, and transmits the signal to the signal port of the clamping device corresponding to the unqualified communication circuit board by the network analyzer and the switching box. And extending the telescopic rod in the receiving slot to clamp the unqualified communication circuit board. The radio frequency characteristic testing device of claim 1, wherein: the communication circuit board has a radio frequency The flexible circuit board of the antenna. The radio frequency characteristic testing device of claim 1, wherein: the input ends of the plurality of first signal connectors are electrically connected to one of the signal ports respectively connected to one of the clamping devices by a connecting wire. . 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. The radio frequency characteristic testing device of claim 1, wherein: each of the first signal input connectors is respectively marked with a digit, and the switch is used for the digit sequence indicated by the first signal connector. The first signal connector is switched in order to electrically connect the switched first signal connector to the second signal connector. The radio frequency characteristic testing device of claim 1, wherein: the network analyzer comprises a third signal connector and a fourth signal connector, wherein the third signal connector is connected to the switch box by a connection line The second signal output connector is electrically connected, and the result display device comprises a computer host and a display, wherein the computer host is electrically connected to the fourth signal connector of the network analyzer and the display. The radio frequency characteristic testing device of claim 1, wherein the network analyzer further comprises a display screen for displaying a radio frequency characteristic graph of the communication circuit board detected by the network analyzer. The radio frequency characteristic testing device of claim 1, wherein: the network analyzer stores standard radio frequency characteristic parameters, and corresponds to a radio frequency characteristic graph of the communication circuit board detected by the network analyzer When the parameter falls within the range of the standard RF characteristic parameter, the radio frequency characteristic of the detected communication circuit board is qualified, otherwise, it is unqualified.