CN218772103U

CN218772103U - Conducted stray test system

Info

Publication number: CN218772103U
Application number: CN202223151044.3U
Authority: CN
Inventors: 刘乐乐
Original assignee: Xian Wingtech Information Technology Co Ltd
Current assignee: Xian Wingtech Information Technology Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-28
Anticipated expiration: 2032-11-25

Abstract

The embodiment of the application discloses conduction spurious test system, because the different test seat of equipment to be tested is used for transmitting the radio frequency signal of different frequency channels, a plurality of test seats of equipment to be tested are all inserted into conduction spurious test system through a plurality of first input units of first switch module in this application embodiment, before switching different frequency channels and carrying out radio frequency test, need not to break off equipment to be tested and conduction spurious test system, realize again that conduction spurious test system is connected with another port of equipment to be tested in order to the radio frequency signal of another frequency channel of conduction spurious test system input, also need not the manual work and build the test link again, the efficiency of conduction spurious detection has been improved.

Description

Conducted stray test system

Technical Field

The application relates to the technical field of conducted stray testing, in particular to a conducted stray testing system.

Background

In recent years, with the development of communication technology, the applications of communication equipment become more and more extensive, and the importance on the electromagnetic compatibility of the communication equipment also becomes more and more important. Before the communication equipment leaves a factory, electromagnetic compatibility test needs to be carried out, and the electromagnetic compatibility test comprises conducted stray detection and radiated stray detection.

Present communication equipment often is provided with a plurality of antennas to satisfy communication equipment work in the frequency channel of difference, need the manual work to build the test link again to the stray detection of conduction of different frequency channels, lead to the low efficiency of stray detection of conduction.

Disclosure of Invention

The embodiment of the application discloses a conducted stray test system, which can improve the efficiency of conducted stray detection.

The embodiment of the application discloses conduction spurious test system, conduction spurious test system is used for treating equipment to be tested and carries out spurious test, equipment to be tested includes a plurality of test seats, each the test seat is used for transmitting the radio frequency signal of different frequency channels, the system includes:

the first switch module comprises N first input units and a first output unit, the N first input units are used for correspondingly and electrically connecting the plurality of test seats of the equipment to be tested, N is more than or equal to 2, and the first switch module is used for selectively conducting the first output unit and one of the N first input units;

the shunt module comprises a second input unit and two second output units, the second input unit is electrically connected with the first output unit, one of the two second output units is used for being electrically connected with a comprehensive tester, and the comprehensive tester is used for exciting the equipment to be tested to transmit a preset radio frequency signal in a preset frequency band;

the power adjustment module comprises a third input unit and a third output unit, the third input unit is electrically connected with the other one of the two second output units, the third output unit is electrically connected with the spectrum analysis device, and the power adjustment module is used for inhibiting a preset frequency band signal in the preset radio frequency signal and outputting the inhibited preset radio frequency signal to the spectrum analysis device.

As an optional implementation manner, the splitting module includes a coupler, and the coupler includes a first input end, a coupling end, and a through end, the first input end serves as the second input unit of the splitting module, the coupling end serves as one of the two second output units of the splitting module, and the through end serves as the other of the two second output units of the splitting module.

As an optional implementation manner, the power adjustment module includes a second switch unit, a filter unit, and a third switch unit, where the filter unit includes N filter sub-units, the second switch unit includes a first input sub-unit and N first output sub-units, the third switch unit includes N second input sub-units and a second output sub-unit, the second switch unit is configured to selectively turn on one of the first input sub-unit and N first output sub-units, and the third switch unit is configured to selectively turn on one of the second output sub-unit and N second input sub-units;

the first input subunit is used as the third input unit, the N first output subunits are correspondingly and electrically connected with one ends of the N filtering subunits, the other ends of the N filtering subunits are correspondingly and electrically connected with the N second input subunits, and the second output subunit is used as the third output unit.

As an optional implementation manner, each of the first output subunits includes a first output terminal, one of the N first output subunits further includes a second output terminal, each of the N second input subunits includes a second input terminal, one of the N second input subunits includes a third input terminal, the N first output terminals are electrically connected to one ends of the N filtering subunits, the other ends of the N filtering subunits are electrically connected to the N second input terminals, and the second output terminals are electrically connected to the third input terminals;

the system further comprises N first power dividers, each of the first power dividers includes a fourth input end and two third output ends, each of the first input units includes a fifth input end, one of the N first input units includes a sixth input end, each of the fourth input ends is used for being electrically connected to each of the test sockets correspondingly, one of the two third output ends is electrically connected to the corresponding fifth input end, and the other of the two third output ends is electrically connected to the sixth input end.

As an alternative implementation, each of the filtering subunits comprises a high-pass filter and a band-stop filter, each of the first output terminals comprises a first sub-output terminal and a second sub-output terminal, and each of the second input terminals comprises a first sub-input terminal and a second sub-input terminal;

the first sub-output end is electrically connected with one end of the high-pass filter, the other end of the high-pass filter is electrically connected with the first sub-input end, the second sub-output end is electrically connected with one end of the band elimination filter, and the other end of the band elimination filter is electrically connected with the second sub-input end.

As an optional implementation manner, the device to be tested includes a first test socket, where the first test socket is configured to transmit at least a radio frequency signal in a first frequency band and a radio frequency signal in a second frequency band, and the system further includes a second power divider, where the second power divider includes a seventh input end and at least two fourth output ends, the seventh input end is configured to be electrically connected to the first test socket, and each of the fourth output ends is correspondingly electrically connected to the first input unit.

As an optional implementation manner, the system further includes a control module electrically connected to the first switch module, the second switch unit, and the third switch unit, respectively, and configured to output instruction signals to the first switch module, the second switch unit, and the third switch unit, so as to selectively turn on the first switch module, the second switch unit, and the third switch unit.

As an optional implementation manner, the control module includes a first processing unit and N key assemblies, where the first processing unit is respectively connected to the first switch module, the second switch unit, the third switch unit, and each of the key assemblies, and is configured to output a first instruction signal according to a key operation applied to one of the N key assemblies, so as to selectively turn on the first switch module, the second switch unit, and the third switch unit; or,

the control module comprises a second processing unit, the second processing unit is respectively connected with the first switch module, the second switch unit and the third switch unit, the second processing unit is used for being connected with an upper computer, receiving a control signal of the upper computer and outputting a second instruction signal according to the control signal, so that the first switch module, the second switch unit and the third switch unit are selectively conducted.

As an optional implementation manner, the system further includes an attenuator, one end of the attenuator is electrically connected to the third output unit, and the other end of the attenuator is used for electrically connecting the spectrum analysis apparatus.

As an optional implementation manner, the device under test includes one of a mobile phone, a customer premises equipment, a communication module, a watch, or a tablet computer.

Compared with the related art, the embodiment of the application has the following beneficial effects:

the utility model provides a stray test system of conduction includes first switch module, divide by route module and power adjustment module, first switch module can realize all inserting stray test system of conduction with a plurality of test seats of the equipment that awaits measuring, and divide into two the tunnel with the radio frequency signal of test seat output through the module of dividing by route, with wherein radio frequency signal output to the comprehensive tester all the way, with realize that the equipment that awaits measuring can export preset radio frequency signal under the excitation of comprehensive tester, simultaneously with another way radio frequency signal output to the power adjustment unit, through the preset frequency channel signal (dominant frequency signal) of power adjustment unit to radio frequency signal restrain, the radio frequency signal after will restraining exports the spectral analysis appearance, can obtain the stray test result of conduction of the equipment that awaits measuring according to the analysis result of spectral analysis appearance.

Because the equipment to be tested works under the condition of different frequency bands, the antennas outputting radio frequency signals are possibly different, a plurality of test seats of the equipment to be tested are all connected into the conduction stray test system through a plurality of first input units of the first switch module in the embodiment of the application, before different frequency bands are switched for testing, the equipment to be tested is not required to be disconnected from the conduction stray test system, the conduction stray test system is connected with another port of the equipment to be tested so as to input radio frequency signals of another frequency band into the conduction stray test system, namely, a test link is not required to be manually rebuilt, and the efficiency of conduction stray detection is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a conducted spurious testing system according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another conducted spurious test system disclosed in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a power adjustment module according to an embodiment of the disclosure;

FIG. 4 is a schematic diagram of another conducted spurious test system disclosed in an embodiment of the present application;

fig. 5 is a schematic structural diagram of another power adjustment module disclosed in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "comprising" and "having," and any variations thereof, in the examples and figures herein are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Spurious emissions are a significant cause of interference for radio management efforts. Spurious testing is an important necessity in the detection of radio transmitting devices. Spurs are transmissions at a frequency or frequencies outside the operating bandwidth that can be reduced in transmission level without affecting the corresponding information transfer. The method comprises the following steps: harmonic emissions, parasitic emissions, intermodulation products, and frequency conversion products.

In the rf test, the Spurious emission test is a basic test item, and mainly includes a conducted Spurious test and a radiated Spurious test, where Conducted Spurious (CSE) refers to that when a transmitter operates, in addition to emitting useful operating frequency bands, unwanted rf signals are emitted, and these unwanted rf signals may interfere with other devices, such as: second harmonic and third harmonic.

The current communication device may include a transmitter, a test socket, and an antenna, which are connected in sequence, where the transmitter may be configured to transmit a radio frequency signal in an operating frequency band, and the test socket may be configured to test radio frequency performance of the communication device. Optionally, the communication device may further include a power amplifier, electrically connected between the transmitter and the test socket, for amplifying the radio frequency signal output by the transmitter, so that the antenna can convert the radio frequency signal into electromagnetic waves to be radiated. The communication device may be provided with a plurality of antennas to enable the communication device to work in different frequency bands, and the communication device also includes a plurality of test sockets, each of which is electrically connected to each of the antennas in a one-to-one correspondence.

When the inventor conducts stray test on the current communication equipment, after the inventor finds that the current test frequency band of the communication equipment is tested, the input port of the test system (the port of the equipment to be tested for inputting the radio-frequency signal to be tested of the equipment to be tested) needs to be separated from the first port of the equipment to be tested (the port of the equipment to be tested for outputting the current radio-frequency signal to be tested) manually, and then the input port of the test system is electrically connected with the second port of the equipment to be tested (the port of the equipment to be tested for outputting the next radio-frequency signal to be tested), so that the test system can test the next radio-frequency signal to be tested.

Along with people's improvement to the communication requirement, communication is established and is often included a plurality of working frequency channels, is testing the condition of communication equipment's conduction is stray, need all test this a plurality of working frequency channels, at this moment when switching different working frequency channels and testing, all need the manual work to rewire, leads to the inefficiency of conduction test.

In view of this, this application embodiment provides a conduction spurious test system, this conduction spurious test system is through setting up first switch module, and this first switch module includes a plurality of first input units, so the tester can correspond one-to-one electricity with a plurality of test seats and a plurality of first input units of equipment to be tested to when switching another working frequency channel of equipment to be tested and carrying out the conduction spurious test, need not to carry out rewiring, thereby the efficiency of conduction spurious test has been improved.

Referring to fig. 1, a conducted spurs testing system provided by the embodiment of the present application is shown, and the system is used for testing conducted spurs of a device to be tested, optionally, the device to be tested may be the communication device described above, and the device to be tested may include, but is not limited to, a mobile phone, a CPE (Customer premises Equipment), a communication module, a watch, or a tablet computer. As shown in FIG. 1, the conducted spurious test system may include a first switch module 100, a shunt module 200 and a power adjustment module 300, the first switch module 100 may include N first input units 110 and a first output unit 120, the shunt module 200 may include a second input unit 210 and two second output units 220, and the power adjustment module 300 may include a third input unit 310 and a third output unit 320, where N is greater than or equal to 2, and N is a positive integer. Specifically, the N first input units 110 are used to be electrically connected to the plurality of test sockets 410 of the device under test 400 correspondingly, the first output unit 120 is electrically connected to the second input unit 210, one of the two second output units 220 is used to be electrically connected to the integrated tester 500, the other of the two second output units 220 is electrically connected to the third input unit 310, and the third output unit 320 is used to be electrically connected to the spectrum analyzer 600.

It should be noted that the first switch module 100 is used for selectively turning on the first output unit 120 and one of the N first input units 110. The comprehensive tester 500 is configured to excite the device under test 400 to emit a preset radio frequency signal of a preset frequency band, where the preset frequency band is a frequency band to be tested in the current conducted spurious test, the preset radio frequency signal includes a preset frequency band signal and a harmonic signal, and a frequency band of the preset frequency band signal is consistent with the preset frequency band, or the preset frequency band signal is a main frequency signal. The power adjustment module 300 may be configured to suppress a preset frequency band signal in the preset rf signal, and output the suppressed preset rf signal to the spectrum analyzer 600 through the third output unit 320. The power adjustment module 300 can suppress the predetermined rf signal but does not affect the signal (e.g., the harmonic signal) related to the conducted spurious test, so that the spectrum analyzer 600 can measure the strength of the conducted spurious signal of the dut 400 according to the suppressed predetermined rf signal. For determining the strength of the conducted spurious signals of the device under test 400 and for enabling the integrated tester 500 to excite the device under test 400 to emit the predetermined radio frequency signals in the predetermined frequency band, reference is made to the prior art, which is not repeated herein.

The conducted spurious test system provided in the embodiment of the application includes a first switch module 100, a shunt module 200, and a power adjustment module 300, where a plurality of first input units 110 of the first switch module 100 can simultaneously electrically connect a plurality of test sockets 410 of the device under test 400 with the conducted spurious test system, and divide the radio frequency signal of the preset frequency band output by the test sockets 410 into two paths through the shunt module 200, and output one path of the radio frequency signal to the integrated tester 500, so that the device under test 400 can output the radio frequency signal under the excitation of the integrated tester 500, and simultaneously output the other path of the radio frequency signal to the power adjustment module 300, and suppress the preset frequency band signal (main frequency signal) of the radio frequency signal through the power adjustment module 300, and output the suppressed radio frequency signal to the spectrum analyzer 600, and can obtain the conducted spurious test result of the device under test 400 according to the analysis result of the spectrum analyzer 600.

According to the above description, it can be known that, through the first switch module 100, the plurality of test sockets 410 of the device under test 400 can be all connected to the conducted spurious test system, before switching to different frequency bands for testing, the device under test 400 does not need to be disconnected from the conducted spurious test system, and then the conducted spurious test system is connected to another port of the device under test 400 so as to input a radio frequency signal of another frequency band to the conducted spurious test system, that is, a test link does not need to be manually re-established, so that the efficiency of conducted spurious detection is improved.

At present, the test system in the related art has a complex structure, a large volume and a high price, and focuses on more indexes of harmonic waves during the research, development and adjustment of the product development stage, that is, many sets of functions of the test system in the related art are not needed, and the conducted stray test system provided by the embodiment can meet the test of the indexes of the harmonic waves, that is, the research, development, adjustment and measurement requirements in the product development stage.

Alternatively, the first switch module 100 may be a rotary switch, the rotary switch may include a plurality of stationary contacts and a movable contact connected to the torsion bar, the plurality of stationary contacts may serve as the first input unit 110 of this embodiment, the movable contact may serve as the first output unit 120 of this embodiment, and a tester may control the torsion bar to rotate to achieve electrical conduction between the movable contact and one of the plurality of stationary contacts. Optionally, each test socket 410 of the device under test 400 is electrically connected to the first input unit 110 through a radio frequency cable.

Optionally, N is the same as the number of the test sockets 410 of the device under test 400, that is, the number of the first input units 110 of the first switch module 100 is the same as the number of the test sockets 410 of the device under test 400, so that all the test sockets 410 of the device under test 400 can be accessed into the conducted stray test system at one time, and therefore, the conducted stray test in the full frequency band of the device under test 400 does not need a tester to perform multiple connections.

In an optional embodiment, a Subscriber Identity Module (SIM) card installed in the device under test 400 is a test white card, so that the device under test 400 can transmit a preset radio frequency signal in a preset frequency band under the excitation of the integrated tester 500, and cannot establish a communication connection with a base station, that is, cannot affect a conducted spurious test of the device under test 400.

In an optional embodiment, referring to fig. 2, the conducted spurious testing system may further include an upper computer 700, where the upper computer 700 is connected to the spectrum analysis device 600, and is configured to obtain an analysis result of the spectrum analysis device 600 on the device to be tested 400 and output the analysis result. Optionally, the upper computer 700 is connected to the spectrum analyzer 600 through a GPIB (General-Purpose-spectrum Interface Bus). Optionally, the upper computer 700 may include a control unit and an output unit, the control unit is connected to the spectrum analysis device 600 and the output unit, the control unit is configured to obtain an analysis result of the spectrum analysis device 600, process the analysis result, and send the processed analysis result to the output unit. The output unit may be configured to output the processed analysis result. Illustratively, the output unit may include a display for receiving and displaying the processed analysis results. Alternatively, the control module may be a PC (personal computer). In an optional embodiment, the upper computer 700 may be further connected to the integrated tester 500, and configured to send a control signal to the integrated tester 500 to instruct the integrated tester 500 to set a corresponding frequency band, channel, line loss, power level, and the like, so that the device under test 400 may enter a required test state (the device under test 400 may send a preset radio frequency signal), and meet a test requirement. Optionally, the upper computer 700 is connected to the integrated tester 500 through a GPIB.

In an alternative embodiment, with continued reference to fig. 2, the conducted spurious test system may further include an attenuator 800, one end of the attenuator 800 is electrically connected to the third output unit 320, and the other end of the attenuator 800 is electrically connected to the spectrum analysis apparatus 600. The attenuator 800 may be configured to attenuate the rf signal output by the power adjustment module 300, so as to further reduce the power of the rf signal input to the spectrum analysis apparatus 600. Optionally, the attenuation value of the attenuator 800 may range from 5dB to 20dB, and illustratively, the attenuation value may be 5dB, 10dB, 15dB, or 20dB.

In an alternative embodiment, the splitting module may include a coupler, the coupler includes a first input end, a through end and a coupling end, with continuing to refer to fig. 1, the first input end of the coupler serves as the second input unit 210 of the splitting module 200, the coupling end of the coupler serves as one of the two second output units 220 of the splitting module 200, and the through end of the coupler serves as the other of the two second output units 220 of the splitting module 200. That is, a first input terminal of the coupler is electrically connected to the first output unit 120, a coupling terminal of the coupler is used for electrically connecting to the integrated tester 500, and a through terminal of the coupler is electrically connected to the third input unit 310. In this embodiment, the coupler is adopted to divide the preset rf signal input to the conducted spurious test system into two sub-preset rf signals, and since the loss of the straight-through end of the coupler is smaller than the loss of the coupling end of the coupler, the straight-through end is electrically connected to the third input unit 310, so that the quality of the rf signal input to the spectrum analysis apparatus 600 can be ensured, and the validity of the analysis result of the spectrum analysis apparatus 600 can be ensured. Meanwhile, the radio frequency signal output by the coupling end of the coupler is used for realizing that the device under test 400 can register the signaling on the integrated tester 500, so that even if the power is low, the signaling registration on the integrated tester is not affected, and the device under test 400 can output a preset radio frequency signal under the excitation of the integrated tester 500.

Referring to fig. 3, which shows a power adjustment module provided in an embodiment of the present application, as shown in fig. 3, the power adjustment module 300 may include a second switch unit 330, a filter unit 340, and a third switch unit 350, specifically, the second switch unit 330 may include a first input subunit 331 and N first output subunits 332, the filter unit 340 may include N filter subunits 341, the third switch unit 350 may include N second input subunits 351 and a second output subunit 352, the first input subunit 331 is electrically connected to another one of the two second output units 220, the N first output subunits 332 are electrically connected to one ends of the N filter subunits 341, the other ends of the N filter subunits 341 are electrically connected to the N second input subunits 351, that is, the second output subunit 352 is electrically connected to the spectrum analysis device 600, the first input subunit 331 is equivalent to a third input unit of the power adjustment module 300, and the second output subunit 352 is equivalent to a third output unit of the power adjustment module 300.

Among them, the second switching unit 330 may be used to selectively turn on one of the first input sub-unit 331 and the N first output sub-units 332, and the third switching unit 350 may be used to selectively turn on one of the second output sub-unit 352 and the N second input sub-units 351. It should be noted that N filtering subunits 341 can be used to filter signals in different frequency bands. The number of the filtering subunits 341 is the same as the number of the first input units, and as can be seen from the above description, the first input units are used for connecting each test socket of the device to be tested, and by providing the filtering subunits 341 in a number corresponding to the first input units, each filtering subunit 341 is respectively used for filtering the frequency band signal (main frequency signal) of the radio frequency signal output by the corresponding test socket, so as to ensure the validity of the radio frequency signal input to the spectrum analysis apparatus 600.

In this embodiment, the second switch unit 330 and the third switch unit 350 may access the filtering subunit 341 corresponding to the preset frequency band signal of the preset radio frequency signal between the first input subunit 331 and the second output subunit 352, so as to filter the preset frequency band signal of the preset radio frequency signal, and ensure the validity of the preset radio frequency signal output to the spectrum analysis apparatus 600. Meanwhile, since each filtering subunit 341 is electrically connected to the first output subunit 332 corresponding to the second switch unit 330 and is electrically connected to the second input subunit 351 corresponding to the third switch unit 350, it is not necessary to remove the original filtering subunit 341 and replace it with the filtering subunit 341 corresponding to the frequency band currently required to be tested when the test frequency band is switched, so as to improve the testing efficiency of conducted spurs.

For example, one of the N filtering sub-units 341 may be configured to filter a radio frequency signal with a frequency band of a third frequency band, and the filtering sub-unit 341 is referred to as a first filtering sub-unit, a first output sub-unit 332 electrically connected to the first filtering sub-unit is a first output sub-unit a, a second input sub-unit 351 connected to the first filtering sub-unit is a second input sub-unit a, a test socket in the device under test for transmitting the radio frequency signal with the frequency band of the third frequency band is a test socket a, and a first input unit electrically connected to the test socket a is a first input unit a. When the conducted stray corresponding to the third frequency band needs to be tested, the first input unit a and the first output unit a are electrically conducted through the first switch module, the first input subunit 331 and the first output subunit a are electrically conducted, and the second input subunit a and the second output subunit 352 are electrically conducted, so that the radio-frequency signal of the third frequency band output by the device to be tested is input into the first filtering subunit through the test socket a, the first input unit a, the first output unit, the second input unit, the other of the two second output units, the first input subunit 331 and the first output subunit a, the third frequency band signal in the radio-frequency signal is filtered by the first filtering subunit, output from the second input subunit a and output to the spectrum analysis device 600 through the second output subunit, so that the spectrum analysis device 600 can analyze the radio-frequency signal after filtering, and determine the conducted stray corresponding to the third frequency band of the device to be tested.

Alternatively, the second switch unit 330 may be a rotary switch, the rotary switch may include a plurality of stationary contacts and a movable contact connected to the torsion bar, the plurality of stationary contacts may serve as the first output subunit 332 of this embodiment, the movable contact may serve as the first input subunit 331 of this embodiment, and the tester may control the torsion bar to rotate to achieve electrical conduction between the movable contact and one of the plurality of stationary contacts. Also, the third switch unit 350 may be a rotary switch, and the rotary switch may include a plurality of stationary contacts serving as the second input sub-unit 351 of the present embodiment and a movable contact serving as the second output sub-unit 352 of the present embodiment, and the tester may electrically communicate the movable contact with one of the plurality of stationary contacts by controlling the rotation of the torsion bar.

In an optional embodiment, the conducted spurious test system may further include a second power divider, where the second power divider includes a seventh input end and at least two fourth output ends, the seventh input end of the second power divider may be used to be connected to a first test socket of the device under test, and each fourth output end is electrically connected to the first input unit correspondingly, where the first test socket may be used to transmit at least a radio frequency signal in the first frequency band and a radio frequency signal in the second frequency band, that is, when the device under test operates in the first frequency band, the first test socket has a radio frequency signal flowing in/out, and when the device under test operates in the second frequency band, the first test socket also has a radio frequency signal flowing in/out. This embodiment can realize the radio frequency signal of the different frequency channels of the equipment that awaits measuring from the input of different first input unit through setting up the second merit and dividing the ware to can choose for use the switch of the same type, the same command signal of control module output can control first switch module, second switch unit and third switch unit simultaneously.

Referring to fig. 4, which illustrates a conducted spurious testing system according to an embodiment of the present disclosure, as shown IN fig. 4, each of the first output subunits 332 includes a first output terminal OUT10, one of the N first output subunits 332 may further include a second output terminal OUT20, each of the second input subunits 351 includes a second input terminal IN20, one of the N second input subunits 351 may further include a third input terminal IN30, the N first output terminals OUT10 are electrically connected to the N filter subunits 341, the other ends of the N filter subunits 341 are electrically connected to the N second input terminals IN20, and the second output terminal OUT20 is electrically connected to the third input terminal IN 30.

With reference to fig. 4, the conducted stray power testing system may further include N first power dividers 900, each first power divider 900 includes a fourth input end and two third output ends, each first input unit 110 includes a fifth input end IN50, one of the N first input units 110 may further include a sixth input end IN60, the fourth input end of each first power divider 900 is used to electrically connect to each test socket 410 correspondingly, one of the two third output ends of each first power divider 900 is electrically connected to the corresponding fifth input end IN50, and the other of the two third output ends of each first power divider 900 is electrically connected to the sixth input end IN 60.

It should be noted that the second switching unit 330 may be configured to selectively turn on a first target output terminal, which is one of the N first output terminals OUT10 and OUT20, and the third switching unit 350 may be configured to selectively turn on a first target input terminal, which is one of the N second input terminals OUT20 and OUT 30.

IN this embodiment, by setting the N first power dividers 900, the sixth input end IN60 of the first switch module 100 can receive the radio frequency signals of the N frequency bands of the device under test 400, and at the same time, the electrically-conducted second output end OUT20 and third input end IN30 are also set, so that when the parameters (such as loss) of the conducted spurious test system need to be determined or a control group needs to be set, the sixth input end IN60 and the first output unit 120 can be conducted through the first switch module 100, the first input subunit 331 and the second output end OUT20 can be conducted through the second switch unit 330, and the third input end IN30 and the second output subunit 352 can be conducted through the third switch unit 350, so that the conducted spurious test system can analyze the radio frequency signals output from the second output subunit 352 to obtain corresponding parameters, thereby correcting the test result and improving the test accuracy.

Referring to fig. 5, which illustrates a power adjustment module according to an embodiment of the present disclosure, as shown IN fig. 5, each filtering subunit 341 may include a high-pass filter 341a and a band-stop filter 341b, each first output end may include a first sub-output end OUT11 and a second sub-output end OUT12, each second input end may include a first sub-input end IN21 and a second sub-input end IN22, the first sub-output end OUT11 is electrically connected to one end of the high-pass filter 341a, the other end of the high-pass filter 341a is electrically connected to the first sub-input end IN21, the second sub-output end OUT12 is electrically connected to one end of the band-stop filter 341b, and the other end of the band-stop filter 341b is electrically connected to the second sub-input end IN 22.

It should be noted that the second switching unit 330 may be configured to selectively turn on the first input sub-unit 331 and a second target input terminal, and the third switching unit 350 may be configured to selectively turn on the second output sub-unit 352 and a second target input terminal, wherein the second target output terminal is one of the N first sub-output terminals OUT11, N second sub-output terminals OUT12 and the second output terminal OUT20, and the second target input terminal is one of the N first sub-input terminals IN21, N second sub-input terminals IN22 and the third input terminal IN 30.

It will be appreciated that the high pass filter 341a is one that allows frequencies above a certain cutoff to pass while attenuating frequencies significantly below the certain cutoff, and the band stop filter 341b is one that attenuates frequency components in certain ranges to very low levels, with very little attenuation of frequency components outside of those ranges. As can be seen from this, in the present embodiment, the second switch unit 330 and the third switch unit 350 may connect the high-pass filter 341a or the band-stop filter 341b (the high-pass filter 341a or the band-stop filter 341b that can filter the preset frequency band signal) corresponding to the preset frequency band signal of the preset radio frequency signal between the first input sub-unit 331 and the second output sub-unit 352, so as to achieve the purpose of suppressing the preset frequency band signal. When the appropriate band elimination filter 341b is selected, only the preset frequency band signal can be suppressed, so that not only the harmonic signal of the equipment to be tested can be tested, but also the sideband spurs of the equipment to be tested can be tested, and the conducted spurs test is more significant.

With reference to fig. 4, the conducted spurious test system may further include a control module 1000, wherein the control module 1000 is electrically connected to the first switch module 100, the second switch unit 330 and the third switch unit 350, and is configured to output command signals to the first switch module 100, the second switch unit 330 and the third switch unit 350, so as to selectively turn on the first switch module 100, the second switch unit 330 and the third switch unit 350.

It should be noted that the first switch module 100, the second switch unit 330, and the third switch unit 350 may be in different conducting states according to different command signals. For example, the first switch module 100, the second switch unit 330, and the third switch unit 350 may be single-pole multi-throw switches, and the types of the single-pole multi-throw switches may be selected according to test requirements (for example, the number of test sockets), and for example, in the case that the device under test has 3 test sockets, a single-pole four-throw switch may be selected as the first switch module 100, a single-pole eight-throw switch may be selected as the second switch unit 330, and a single-pole eight-throw switch may be selected as the third switch unit 350. The single-pole multi-throw switch can conduct the movable end and the different fixed ends according to different level input signals, and therefore the command signal is a level signal. The control module 1000 may be used to output different level signals.

In an alternative embodiment, the control module 1000 may include a first processing unit and N key assemblies, wherein the first processing unit is respectively connected to the first switch module 100, the second switch unit 330, the third switch unit 350 and each key assembly in a one-to-one correspondence manner, and is configured to output a first command signal according to a key operation applied to one of the N key assemblies, so as to selectively turn on the first switch module 100, the second switch unit 330 and the third switch unit 350.

Optionally, the first switch module 100, the second switch unit 330, and the third switch unit 350 are all single-pole multi-throw switches, the first processing unit includes N input ends corresponding to the key assembly, the key assembly may include a power source and a key switch connected in series between the power source and the input end of the first processing unit, when the tester presses the key switch, the input end connected to the key switch correspondingly receives a level signal (power signal), and the first processing unit may output a corresponding first instruction signal according to the input end receiving the level signal, so that the first switch module 100, the second switch unit 330, and the third switch unit 350 are selectively turned on. Alternatively, the first Processing Unit may include a Central Processing Unit (CPU). It should be noted that, the first processing unit outputs the corresponding first instruction signal according to the input end receiving the level signal, so that the first switch module 100, the second switch unit 330, and the third switch unit 350 are selectively turned on by using the existing technical solution.

In yet another alternative embodiment, the control module 1000 may include a second processing unit, the second processing unit is connected to the first switch module 100, the second switch unit 330 and the third switch unit 350, respectively, and the second processing unit is connected to the upper computer, and is further configured to receive a control signal of the upper computer and output a second instruction signal according to the control signal, so that the first switch module 100, the second switch unit 330 and the third switch unit 350 are selectively turned on.

Optionally, the upper computer includes the input module, and the tester can pass through the input module as required and input test information to the upper computer, and the upper computer is according to this test information to second processing unit output control signal. It should be noted that the second processing unit outputs the second instruction signal according to the control signal, so that the selective conduction of the first switch module 100, the second switch unit 330, and the third switch unit 350 can be implemented by using the existing technical solution.

The embodiments described below will briefly describe a conducted spurious test system that may be used to conduct conducted spurious tests on a device under test having three test sockets. The device to be tested is provided with a second test seat, a third test seat and a fourth test seat, the second test seat is used for transmitting radio frequency signals with the frequency band of 400MHz to 960MHz, the third test seat is used for transmitting radio frequency signals with the frequency band of 1400MHz to 2700MHz, and the fourth test seat is used for transmitting radio frequency signals with the frequency band of 3300GHz to 4200 MHz. The conducted spurious test system may include a first switch module, a coupler, a second switch module, a filtering unit, a third switch module, an attenuator, and a second processing unit, where the coupler includes a first input end, a through end, and a coupling end, the first switch module is a first single-pole four-throw switch, the second switch unit is a second single-pole four-throw switch, the third switch unit is a third single-pole four-throw switch, the filtering unit includes a first high-pass filter, a second high-pass filter, and a third high-pass filter, an intercept frequency of the first high-pass filter is 1200MHz (a frequency band allowed to pass by the first high-pass filter is 1200MHz to 13500 MHz), an intercept frequency of the second high-pass filter is 3000MHz (a frequency band allowed to pass by the second high-pass filter is 3000MHz to 18000 MHz), an intercept frequency of the third high-pass filter is 5000MHz (a frequency band allowed to pass by the third high-pass filter is 5000 MHz), the first high-pass filter may be configured to filter a frequency band signal output by the second test socket, the second high-pass filter may be configured to filter, and an attenuation value of the third high-pass signal output attenuator may be 20dB.

Specifically, three of the four immobile ends of the first single-pole four-throw switch are respectively used for being correspondingly and electrically connected with the second test seat, the third test seat and the fourth test seat, the mobile end of the first single-pole four-throw switch is connected with a first input end of a coupler, a coupling end of the coupler is used for being connected with an integrated tester, a direct end of the coupler is connected with the mobile end of the second single-pole four-throw switch, three of the four immobile ends of the second single-pole four-throw switch are respectively and correspondingly electrically connected with one ends of a first high-pass filter, a second high-pass filter and a third high-pass filter, three of the four immobile ends of the third single-pole four-throw switch are respectively and correspondingly and electrically connected with the other ends of the first high-pass filter, the second high-pass filter and the third high-pass filter, the mobile end of the third single-pole four-throw switch is connected with one end of an attenuator, the other end of the attenuator is used for being connected with a spectrum analysis device, the second processing unit is respectively and electrically connected with the first single-pole four-throw switch, the third single-pole four-throw switch, the USB single-pole four-throw switch is used for receiving a signal, and for being connected with the USB single-throw switch, and the USB single-pole four-throw switch for receiving a signal, and controlling the USB single-throw switch to be connected with the USB single-pole four-throw switch, and the USB single-throw switch for receiving the USB single-throw switch for controlling the USB single-throw switch for receiving the USB single-throw switch.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The foregoing detailed description is directed to a conducted spurious emission test system disclosed in an embodiment of the present application, and specific examples are applied herein to illustrate the principles and implementations of the present application. Meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A conducted spurious test system, characterized in that, conducted spurious test system is used for treating the equipment under test carries out spurious test, the equipment under test includes a plurality of test seats, each said test seat is used for transmitting the radio frequency signal of different frequency channels, the system includes:

the first switch module comprises N first input units and a first output unit, wherein the N first input units are used for correspondingly and electrically connecting the plurality of test seats of the equipment to be tested, N is more than or equal to 2, and the first switch module is used for selectively conducting the first output unit and one of the N first input units;

2. The conducted stray test system of claim 1, wherein the splitting module comprises a coupler comprising a first input terminal as a second input unit of the splitting module, a coupled terminal as one of the two second output units of the splitting module, and a through terminal as the other of the two second output units of the splitting module.

3. The conducted spurious test system of claim 1, wherein the power adjustment module includes a second switching unit, a filtering unit, and a third switching unit, the filtering unit including N filtering sub-units, the second switching unit including one first input sub-unit and N first output sub-units, the third switching unit including N second input sub-units and one second output sub-unit, the second switching unit for selectively turning on the first input sub-unit and one of N first output sub-units, the third switching unit for selectively turning on the second output sub-unit and one of N second input sub-units;

4. A conducted stray test system according to claim 3, wherein each of said first output subunits comprises a first output terminal, one of said N first output subunits further comprises a second output terminal, each of said N second input subunits comprises a second input terminal, one of said N second input subunits comprises a third input terminal, said N first output terminals are electrically connected to one of said N filter subunits, the other of said N filter subunits are electrically connected to said N second input terminals, and said second output terminal is electrically connected to said third input terminal;

5. The conducted spurious test system of claim 4, wherein each of said filtering sub-units comprises a high pass filter and a band reject filter, each of said first output terminals comprises a first sub-output terminal and a second sub-output terminal, each of said second input terminals comprises a first sub-input terminal and a second sub-input terminal;

6. The conducted spurious test system of claim 3, wherein the device under test includes a first test socket configured to transmit at least a radio frequency signal in a first frequency band and a radio frequency signal in a second frequency band, the system further includes a second power divider, the second power divider includes a seventh input terminal and at least two fourth output terminals, the seventh input terminal is configured to be electrically connected to the first test socket, and each of the fourth output terminals is correspondingly electrically connected to the first input unit.

7. A conducted spurious test system according to claim 3, further comprising a control module electrically connected to the first switch module, the second switch unit, and the third switch unit, respectively, for outputting command signals to the first switch module, the second switch unit, and the third switch unit to selectively turn on the first switch module, the second switch unit, and the third switch unit.

8. A conducted stray test system according to claim 7, wherein the control module comprises a first processing unit and N key assemblies, the first processing unit is respectively connected to the first switch module, the second switch unit, the third switch unit and each of the key assemblies, and is configured to output a first command signal according to a key operation applied to one of the N key assemblies, so as to selectively turn on the first switch module, the second switch unit and the third switch unit; or,

the control module comprises a second processing unit, the second processing unit is respectively connected with the first switch module, the second switch unit and the third switch unit, the second processing unit is used for being connected with an upper computer, receiving a control signal of the upper computer and outputting a second command signal according to the control signal, so that the first switch module, the second switch unit and the third switch unit are selectively conducted.

9. The conducted stray testing system according to claim 1, further comprising an attenuator, one end of the attenuator being electrically connected to the third output unit, the other end of the attenuator being electrically connected to the spectrum analysis apparatus.

10. The conducted stray test system of claim 1, wherein the device under test comprises one of a cell phone, a customer premises device, a communications module, a watch, or a tablet.