CN113917230A - Harmonic wave test system - Google Patents
Harmonic wave test system Download PDFInfo
- Publication number
- CN113917230A CN113917230A CN202111185004.8A CN202111185004A CN113917230A CN 113917230 A CN113917230 A CN 113917230A CN 202111185004 A CN202111185004 A CN 202111185004A CN 113917230 A CN113917230 A CN 113917230A
- Authority
- CN
- China
- Prior art keywords
- harmonic
- test
- switch
- power
- main control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 192
- 238000001914 filtration Methods 0.000 claims description 77
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 54
- 230000003321 amplification Effects 0.000 claims description 41
- 238000010586 diagram Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
- G01R23/165—Spectrum analysis; Fourier analysis using filters
Abstract
The application provides a harmonic test system. The harmonic test system includes: a main control chip; the first end of the power coupler is connected with the main control chip, and the second end of the power coupler is connected with an antenna at the radio frequency front end; one end of the first switch is connected with the third end of the power coupler; the input end of the first test channel is used for being connected with the other end of the first switch, and the output end of the first test channel is connected with the main control chip; the first test path is used for detecting the power of the harmonic wave in the first harmonic wave frequency range; the input end of the second test channel is used for being connected with the other end of the first switch, and the output end of the second test channel is connected with the main control chip; the second test path is for detecting power of harmonics in a second harmonic frequency range. The harmonic test system realizes simple and efficient harmonic test.
Description
Technical Field
The application relates to the technical field of signal testing, in particular to a harmonic testing system.
Background
Existing harmonic test systems typically include: coupler, wave filter, wave trap, frequency spectrograph. The power of the main frequency signal is reduced after passing through the power coupler, then is further filtered or attenuated in a larger amplitude through the wave trap or the filter, then is filtered by the DC direct current through the DC isolator, and finally is tested by the frequency spectrograph for multiple harmonic components.
The whole test system is complex and requires operation of professionals, and the test difficulty is high.
Disclosure of Invention
An object of the embodiment of the present application is to provide a harmonic test system, so as to reduce the difficulty of harmonic test and implement simple and efficient harmonic test.
The embodiment of the application provides a harmonic test system, including: a main control chip; a first end of the power coupler is connected with the main control chip, and a second end of the power coupler is connected with an antenna at the radio frequency front end; one end of the first switch is connected with the third end of the power coupler; the input end of the first test channel is used for being connected with the other end of the first switch, and the output end of the first test channel is connected with the main control chip; the first test path is used for detecting the power of the harmonic wave in a first harmonic wave frequency range; the input end of the second test channel is used for being connected with the other end of the first switch, and the output end of the second test channel is connected with the main control chip; the second test path is for detecting power of harmonics in a second harmonic frequency range; when the harmonic test is carried out, the main control chip sends a main frequency signal, and controls the first switch to be connected with the first test access or the second test access based on a harmonic frequency range corresponding to the main frequency signal, so that the connected test access detects harmonic power, and outputs the harmonic power to the main control chip.
In the embodiment of the application, compared with the prior art, the harmonic test system is simplified, and expensive equipment such as a wave trap and a frequency spectrograph is not needed any more. After the power coupler, a first switch is provided, which can switch on the first test path or the second test path. By means of the first test path, the power of harmonics in a first harmonic frequency range can be detected; by means of the second test path, the power of harmonics in a second harmonic frequency range can be detected; and finally, outputting the detected harmonic power to a main control chip. The harmonic testing system does not need expensive equipment, does not need manual operation in the testing process, and reduces the difficulty of harmonic testing, so that the harmonic testing system can realize simple and efficient harmonic testing.
As a possible implementation manner, the harmonic test system further includes a first amplification module, an input end of the first amplification module is connected to the main control chip, an output end of the first amplification module is connected to the first end of the power coupler, and the first amplification module is configured to amplify the power of the main frequency signal output by the main control chip.
In the embodiment of the application, the first amplification module is connected behind the main control chip, so that the power of the main frequency signal output by the main control chip can be amplified, and the accuracy of harmonic wave testing is improved.
As a possible implementation, the first test path includes: the input end of the first high-pass filter is used for being connected with the other end of the first switch; the input end of the filtering channel is connected with the output end of the first high-pass filter, and the filtering channel is used for outputting harmonic waves; the input end of the radio frequency modem is connected with the output end of the filtering channel, and the output end of the radio frequency modem is connected with the main control chip; the radio frequency modem is used for detecting the power of the harmonic wave output by the filtering channel.
In the embodiment of the application, in the first test path, harmonic signals can be roughly filtered out from the main frequency signals through the first high-pass filter; and filtering the harmonic signal by a filtering wave channel to obtain a relatively pure harmonic signal, and finally detecting the harmonic by a radio frequency modem.
As a possible implementation, the first test path further includes: one end of the second switch is connected with the output end of the first high-pass filter, and the other end of the second switch is connected with the input end of the filtering channel; the filtering channel comprises a plurality of sub-filtering channels which are arranged in parallel, and the sub-filtering channels are respectively used for outputting harmonic waves with different frequencies; the main control chip is further configured to control the second switch to be connected to any one of the plurality of sub-filtering channels, so that the connected sub-filtering channel outputs a harmonic wave of a corresponding frequency.
In this embodiment of the application, the first test path further includes a second switch, and the filtering channel includes a plurality of sub-filtering channels arranged in parallel, and in this way, the filtering channel can further filter harmonics of different frequencies.
As a possible implementation, the first test path further includes: a second amplification module; the input end of the second amplifying module is connected with the output end of the filtering channel, and the output end of the second amplifying module is connected with the input end of the radio frequency modem; the second amplifying module is used for amplifying the power of the harmonic wave output by the filtering channel.
In an embodiment of the present application, the first test path further includes: and the second amplification module can amplify the power of the harmonic wave output by the filtering channel and improve the precision of the harmonic wave test.
As a possible implementation, the first test path further includes: one end of the third switch is connected with the output end of the filtering channel, and the other end of the third switch is connected with the second amplification module; the second amplification module comprises a plurality of sub-amplification modules which are respectively used for amplifying the power of harmonic waves with different frequencies; the main control chip is further configured to control the third switch to be connected to any one of the plurality of sub-amplification modules, so that the connected sub-amplification module amplifies power of a harmonic wave of a corresponding frequency.
In the embodiment of the application, the first test path further includes a third switch, and the second amplification module further includes a plurality of sub-amplification modules, and the power of the harmonic wave with different frequencies can be amplified through the plurality of sub-amplification modules, so that the flexible amplification of the power of the harmonic wave is realized.
As a possible implementation manner, the first harmonic frequency range is: 699MHz to 2.7G.
In the embodiment of the application, the harmonic wave in the frequency range of 699 MHz-2.7G is tested through the first test path.
As a possible implementation, the second test path includes: the input end of the second high-pass filter is used for being connected with the other end of the first switch; and the input end of the WIFI modem is connected with the output end of the second high-pass filter, and the output end of the WIFI modem is connected with the main control chip.
In the embodiment of the application, in the second test path, the preliminary filtering out of the harmonic is realized through the second high-pass filter, and then the filtering of the harmonic signal and the testing of the power of the harmonic are realized through the WIFI modem.
As a possible implementation, the second test path further includes: a third amplification module; the input end of the third amplification module is connected with the output end of the second high-pass filter, and the output end of the third amplification module is connected with the input end of the WIFI modem.
In the embodiment of the application, the second test path further includes a third amplification module, and the third amplification module amplifies the power of the harmonic signal preliminarily filtered by the second high-pass filter, so as to improve the test accuracy of the harmonic.
As a possible implementation manner, the second harmonic frequency range is: 2.4G to 5.85G.
In the embodiment of the application, the harmonic wave in the frequency range of 2.4G-5.85G is tested through the second test path.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a harmonic test system according to a first embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a harmonic test system according to a second embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a first embodiment of a first test path according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a second embodiment of a first test path according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a second test path according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a harmonic test system according to a third embodiment of the present application.
Icon: 10-harmonic test systems; 11-a main control chip; 12-a power coupler; 13-a first switch; 14-a first test path; 140-a first high pass filter; 141-a filtering channel; 142-radio frequency modem; 143-a second switch; 144-a second amplification module; 145-a third switch; 15-a second test path; 150-a second high pass filter; 151-WIFI modem; 152-a third amplification module; 16-first amplification module.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
The technical scheme provided by the embodiment of the application can be applied to various application scenes needing harmonic testing and is mainly used for testing the power of the harmonic.
In addition, the hardware corresponding to the technical scheme provided by the embodiment of the application is the test terminal, that is, the harmonic test system can be integrated in the test terminal, or used as an internal test circuit of the test terminal.
In addition, after the power of the harmonic is tested, the test terminal may further determine whether the current harmonic meets a standard based on the tested power, and a specific determination manner is described in the following embodiments.
Based on the introduction of the application scenario, referring to fig. 1, a schematic structural diagram of a harmonic test system 10 according to an embodiment of the present application is provided, where the harmonic test system 10 includes: the device comprises a main control chip 11, a power coupler 12, a first switch 13, a first test path 14 and a second test path 15.
A first end of the power coupler 12 is connected to the main control chip 11, a second end of the power coupler 12 is connected to an antenna at the radio frequency front end, and a third end of the power coupler 12 is connected to one end of the first switch 13.
The input end of the first test path 14 is used for being connected with the other end of the first switch 13, the output end of the first test path 14 is connected with the main control chip 11, and the first test path 14 is used for detecting the power of the harmonic wave in the first harmonic wave frequency range.
The input end of the second test path 15 is used for being connected with the other end of the first switch 13, the output end of the second test path 15 is connected with the main control chip 11, and the second test path 15 is used for detecting the power of the harmonic wave in the second harmonic wave frequency range.
In the harmonic test system 10, the first switch 13 further includes a control end, the control end may be independent of one end or the other end of the first switch 13, or may be one end or the other end of the first switch 13, the control end is connected to the main control chip 11, and further, the main control chip 11 may control on and off of the first switch 13 and the first test path 14 or the second test path 15.
Based on the circuit structure shown in fig. 1, when performing a harmonic test, the main control chip 11 first sends a main frequency signal, and controls the first switch 13 to be connected with the first test path 14 or the second test path 15 based on a harmonic frequency range corresponding to the main frequency signal, and after the main frequency signal passes through the power coupler 12, detects a harmonic power through the connected test path, and outputs the harmonic power to the main control chip 11.
In the embodiment of the present application, compared with the prior art, the harmonic test system 10 is simplified, and expensive devices such as a wave trap and a spectrometer are not required. After the power coupler 12, a first switch 13 is provided, which first switch 13 can switch on either the first test path 14 or the second test path 15. By means of the first test path 14, the power of harmonics in a first harmonic frequency range can be detected; by means of the second test path 15, the power of harmonics in the second harmonic frequency range can be detected; and finally, outputting the detected harmonic power to the main control chip 11. The harmonic test system 10 does not need expensive equipment, does not need manual operation in the test process, and reduces the difficulty of harmonic test, so that the harmonic test system 10 can realize simple and efficient harmonic test.
In this embodiment of the application, the main control chip 11 may be the main control chip 11 in the test terminal, and may adopt an implementation manner such as an MCU (micro controller Unit), a CPU (Central Processing Unit), and the like, which is not limited in this embodiment of the application.
The power coupler 12 is configured to detect power, and the setting position of the power coupler 12 may be a position near an antenna of the test terminal, specifically, on a path from the radio frequency front end to an antenna base (which may be understood as an antenna connection end), so that a first end of the power coupler 12 is connected to the main control chip 11, and a second end of the power coupler is connected to the antenna base of the radio frequency front end.
The power coupler 12 may also divide one power into several power according to a certain ratio, reduce the power of the main frequency signal after receiving the main frequency signal, and then switch and input the main frequency signal with reduced power to the first test path 14 or the second test path 15 through the path of the first switch 13.
Further, to realize the switching of the paths, the other end of the first switch 13 may include a first end and a second end, the first end is used for connecting with the first test path 14, and the second end is used for connecting with the second test path 15. When the main control chip 11 controls the first terminal of the first switch 13 to be connected with the first test path 14 and controls the second terminal of the first switch 13 to be disconnected with the second test path 15, the first test path 14 is turned on. When the main control chip 11 controls the first end of the first switch 13 to be disconnected from the first test path 14 and controls the second end of the first switch 13 to be connected with the second test path 15, the second test path 15 is connected.
Of course, the other end of the first switch 13 may also include only one end, and when the main control chip 11 controls the end to be connected with the first test path 14, the first test path 14 is turned on; when the main control chip 11 controls the terminal to be connected to the second path, the second test path 15 is turned on. At this time, the first switch 13 may be a single pole double throw switch.
Other possible implementations of the manner of turning on the first switch 13 and the first test path 14 or the second test path 15 may also be adopted, and are not limited in the embodiments of the present application.
For the main control chip 11, the frequency of the main frequency signal emitted by itself is known, and which test channel is switched on can be determined according to the harmonic frequency range corresponding to the frequency of the main frequency signal. Specifically, if it is determined that the corresponding harmonic frequency is within the first frequency range according to the frequency of the main frequency signal, the first switch 13 is controlled to be connected to the first test path 14, and if it is determined that the corresponding harmonic frequency is within the second frequency range according to the frequency of the main frequency signal, the first switch 13 is controlled to be connected to the second test path 15.
It will be appreciated that the power coupler 12 reduces the power of the main frequency signal, and may also amplify the power of the main frequency signal to avoid the power of the signal output by the power coupler 12 being too low in order to avoid the subsequent test path separating the harmonic signal from the main frequency signal.
Therefore, as an optional implementation manner, referring to fig. 2, the harmonic test system 10 further includes a first amplifying module 16, an input end of the first amplifying module 16 is connected to the main control chip 11, an output end of the first amplifying module 16 is connected to the first end of the power coupler 12, and the first amplifying module 16 is configured to amplify the power of the main frequency signal output by the main control chip 11.
In the embodiment of the present application, the first amplifying module 16 may be a power amplifying circuit, or a power amplifying module, and is not limited herein.
In this embodiment, by connecting the first amplification module 16 after the main control chip 11, the power of the main frequency signal output by the main control chip 11 can be amplified, thereby improving the accuracy of the harmonic test.
Next, embodiments of the first test path 14 and the second test path 15 will be described, respectively.
Referring to fig. 3, a schematic structural diagram of the first test path 14 is shown, the first test path 14 includes: a first high pass filter 140, a filter channel 141, and a radio frequency modem 142.
Wherein, the input terminal of the first high pass filter 140 is used to connect with the other terminal of the first switch 13, that is, the input terminal of the first high pass filter 140 is used as the input terminal of the first test path 14, and when the first switch 13 is connected with the first test path 14, the other terminal of the first switch 13 is connected with the input terminal of the first high pass filter 140.
The first high-pass filter 140 is used to filter out harmonic signals from the reduced-power main frequency signal output by the power coupler 12, where the filtered harmonic signals may contain other impurity signals. It will be appreciated that due to the higher frequency of the harmonics, separation of the harmonic signals can be achieved by a high pass filter.
The output end of the first high-pass filter 140 is connected to the input end of the filtering channel 141, and the harmonic signal containing the impurity signal can be further filtered through the filtering channel 141 to obtain a relatively pure harmonic signal, so that the harmonic output by the filtering channel 141 is a pure harmonic.
The input end of the rf modem 142 is connected to the output end of the filtering channel 141, and the output end of the rf modem 142 is connected to the main control chip 11, so that the power of the clean harmonic signal can be detected by the internal circuit of the rf modem 142, and the detected power is output to the main control chip 11.
In this embodiment, in the first test path 14, harmonic signals can be coarsely filtered out of the main frequency signal by the first high-pass filter 140; then, the filtering channel 141 is used to filter the harmonic signal to obtain a relatively pure harmonic signal, and finally, the rf modem 142 is used to detect the harmonic signal.
As an alternative embodiment, the first harmonic frequency range is: 699MHz to 2.7G.
In the embodiment of the application, the harmonic wave in the frequency range of 699 MHz-2.7G is tested through the first test path 14.
In order to further filter the harmonic signal in the harmonic frequency range, referring to fig. 4, as an alternative embodiment, the filtering channel 141 includes a plurality of sub-filtering channels arranged in parallel, and the plurality of sub-filtering channels are respectively used for outputting the harmonics with different frequencies. In order to realize the switching control of the plurality of sub-filtering channels, the first test path 14 further includes a second switch 143, one end of the second switch 143 is connected to the output end of the first high-pass filter 140, the other end of the second switch 143 is connected to the input end of the filtering channel 141, and the main control chip 11 is further configured to control the second switch 143 to be connected to any one sub-filtering channel of the plurality of sub-filtering channels, so that the connected sub-filtering channel outputs a harmonic wave of a corresponding frequency.
As for the connection or connection mode of the second switch 143 to the plurality of sub-filter channels, reference may be made to the connection or connection mode of the first switch 13 to the first test path 14 or the second test path 15 in the foregoing embodiments, and a description thereof will not be repeated.
Wherein, each sub-filtering channel can be different band pass filters, and the filtering frequency range that different band pass filters correspond is different, for example: the filtering frequency range corresponding to the band-pass filter 1 is the frequency range 1, the filtering frequency range corresponding to the band-pass filter 2 is the frequency range 2, the filtering frequency range corresponding to the band-pass filter 3 is the frequency range 3, and so on.
Furthermore, for the main control chip 11, harmonic filtering frequencies corresponding to different main frequency signal frequencies may be preset, based on the main frequency signal frequencies, the harmonic filtering frequencies may be determined, then sub-filtering channels for filtering the harmonic filtering frequencies are determined according to the harmonic filtering frequencies, and further, the corresponding sub-filtering channels are controlled to be connected to the second switch 143.
In this embodiment, the first test path 14 further comprises a second switch 143, and the filter path 141 comprises a plurality of sub-filter paths arranged in parallel, in such a way that the filter path 141 can achieve further filtering of harmonics of different frequencies.
It will be appreciated that the power of the harmonic signal may be further reduced after further filtering by the filtering path 141, and the power of the harmonic signal output by the filtering path 141 may be amplified to ensure that the power of the harmonic is detected.
Therefore, with continued reference to fig. 4, as an alternative embodiment, the first test path 14 further includes: a second amplifying module 144, an input of the second amplifying module 144 is connected to an output of the filtering channel 141, and an output of the second amplifying module 144 is connected to an input of the rf modem 142; the second amplifying module 144 is used for amplifying the power of the harmonic wave output by the filtering channel 141.
Embodiments of the second amplification module 144 refer to embodiments of the first amplification module 16, and will not be described again.
In this embodiment, the first test path 14 further comprises: the second amplifying module 144 may amplify the power of the harmonic output by the filtering channel 141 through the second amplifying module 144, so as to improve the accuracy of the harmonic test.
With reference to the foregoing embodiment, the filtering channel 141 may include a plurality of sub-filtering channels, and the harmonic signal output by the filtering channel 141 may also correspond to a plurality of frequencies, and further, for the second amplifying module 144, the power of the harmonic signal with different frequencies may also be amplified respectively.
Therefore, with continued reference to fig. 4, the first test path 14 further includes: one end of the third switch 145 is connected with the output end of the filtering channel 141, and the other end of the third switch 145 is connected with the second amplifying module 144; the second amplifying module 144 includes a plurality of sub-amplifying modules, which are respectively used for amplifying the power of the harmonic waves of different frequencies; the main control chip 11 is further configured to control the third switch 145 to be connected to any one of the sub-amplification modules, so that the connected sub-amplification module amplifies power of the harmonic corresponding to the frequency.
The connection or connection mode of the third switch 145 and the plurality of sub-amplification modules refers to the connection or connection mode of the first switch 13 and the first test path 14 or the second test path 15 in the foregoing embodiments, and will not be described again here.
Further, for the main control chip 11, harmonic signal frequencies corresponding to different main frequency signal frequencies may be preset, based on the main frequency signal frequencies, the harmonic signal frequencies may be determined, then a sub-amplification module for amplifying the harmonic signal frequencies is determined according to the harmonic signal frequencies, and further, the corresponding sub-amplification module is controlled to be connected with the third switch 145.
In this embodiment, in the first test path 14, the third switch 145 is further included, and the second amplifying module 144 further includes a plurality of sub-amplifying modules, by which the power of the harmonic wave of different frequencies can be amplified, thereby realizing flexible amplification of the power of the harmonic wave.
Referring next to fig. 5, a schematic structural diagram of a second test path 15 provided in the embodiment of the present application is shown, where the second test path 15 includes: a second high pass filter 150 and a WIFI modem 151.
Wherein the input terminal of the second high pass filter 150 is used for connecting with the other terminal of the first switch 13. It will be appreciated that the input of second high pass filter 150 corresponds to the input of second test path 15, and that the input of second high pass filter 150 is connected to the other end of first switch 13 when second test path 15 is closed with second switch 143.
The second high-pass filter 150 is configured to separate a harmonic signal of the input reduced-power main frequency signal, that is, separate the harmonic signal from the reduced-power main frequency signal, where the separated harmonic signal is a harmonic signal with impurities.
The input end of the WIFI modem 151 is connected to the output end of the second high pass filter 150, and the output end of the WIFI modem 151 is connected to the main control chip 11.
The WIFI modem 151 has not only a power detection function of harmonic but also a filtering function of harmonic signals, and thus, in the second test path 15, the power test of harmonic signals can be implemented by the WIFI modem 151 without a separate filtering channel 141.
In this embodiment, in the second test path 15, the second high-pass filter 150 is used to implement the preliminary filtering of the harmonic, and then the WIFI modem 151 is used to implement the filtering of the harmonic signal and the testing of the power of the harmonic.
It can be understood that, since the main frequency signal output by the power coupler 12 is a power-reduced main frequency signal, in order to ensure that the WIFI modem 151 can detect the harmonic power, the harmonic signal output by the second high-pass filter 150 may also be power-amplified. Therefore, with reference to fig. 5, the second test path 15 further includes: a third amplification module 152. An input end of the third amplifying module 152 is connected to an output end of the second high-pass filter 150, and an output end of the third amplifying module 152 is connected to an input end of the WIFI modem 151.
The third amplification module 152 is implemented with reference to the first amplification module 16, and will not be described again.
In this embodiment, the second test path 15 further includes a third amplifying module 152, and the third amplifying module 152 amplifies the power of the harmonic signal preliminarily filtered by the second high-pass filter 150, so as to improve the test accuracy of the harmonic.
In addition, in the embodiment of the present application, the first amplification module 16, the second amplification module 144, and the third amplification module 152 may be single-stage amplification modules, or multi-stage amplification modules, and may be set according to actual requirements.
As an alternative embodiment, the second harmonic frequency range is: 2.4G to 5.85G.
In this embodiment, the harmonic test in the frequency range of 2.4G to 5.85G is performed through the second test path 15.
In the embodiment of the present application, the first switch 13, the second switch 143, and the third switch 145 all use rf switches with small insertion loss to avoid power loss caused by the switches.
With reference to the foregoing description of the embodiment, referring to fig. 6, an optional structural schematic diagram of the harmonic test system 10 in practical application is shown, in fig. 6, a main control chip 11 is connected to a first amplifying module 16, the first amplifying module 16 is connected to a power coupler 12, the power coupler 12 is connected to a first switch 13 and an antenna end, respectively, and the main control chip 11 can control the first switch 13 to switch a connection relationship between a first test path 14 and a second test path 15.
In the first test path 14, there are included: a first high-pass filter 140, a second switch 143, a filtering channel 141 composed of a plurality of sub-filtering channels, a third switch 145, a second amplifying module 144, and a radio frequency modem 142.
In the second test path 15, there are included: a second high pass filter 150, a third amplifying module 152, and a WIFI modem 151.
With reference to the foregoing description of the embodiment, for the main control chip 11, a power detection value of the harmonic may be obtained through the first test path 14 or the second test path 15, and based on the power detection value, the main control chip 11 may further determine the quality of the harmonic. As an alternative embodiment, if the power detection value of the harmonic is within the preset power range, the harmonic detected at this time meets the standard, and if the power detection value of the harmonic is not within the preset power range, the harmonic detected at this time does not meet the standard.
The preset power range may be set in combination with an actual application scenario, and the specific range is not limited herein.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A harmonic testing system, comprising:
a main control chip;
a first end of the power coupler is connected with the main control chip, and a second end of the power coupler is connected with an antenna at the radio frequency front end;
one end of the first switch is connected with the third end of the power coupler;
the input end of the first test channel is used for being connected with the other end of the first switch, and the output end of the first test channel is connected with the main control chip; the first test path is used for detecting the power of the harmonic wave in a first harmonic wave frequency range;
the input end of the second test channel is used for being connected with the other end of the first switch, and the output end of the second test channel is connected with the main control chip; the second test path is for detecting power of harmonics in a second harmonic frequency range;
when the harmonic test is carried out, the main control chip sends a main frequency signal, and controls the first switch to be connected with the first test access or the second test access based on a harmonic frequency range corresponding to the main frequency signal, so that the connected test access detects harmonic power, and outputs the harmonic power to the main control chip.
2. The harmonic test system according to claim 1, further comprising a first amplification module, wherein an input end of the first amplification module is connected to the main control chip, an output end of the first amplification module is connected to the first end of the power coupler, and the first amplification module is configured to amplify the power of the main frequency signal output by the main control chip.
3. The harmonic testing system of claim 1 wherein the first test path comprises:
the input end of the first high-pass filter is used for being connected with the other end of the first switch;
the input end of the filtering channel is connected with the output end of the first high-pass filter, and the filtering channel is used for outputting harmonic waves;
the input end of the radio frequency modem is connected with the output end of the filtering channel, and the output end of the radio frequency modem is connected with the main control chip; the radio frequency modem is used for detecting the power of the harmonic wave output by the filtering channel.
4. The harmonic testing system of claim 3 wherein the first test path further comprises: one end of the second switch is connected with the output end of the first high-pass filter, and the other end of the second switch is connected with the input end of the filtering channel;
the filtering channel comprises a plurality of sub-filtering channels which are arranged in parallel, and the sub-filtering channels are respectively used for outputting harmonic waves with different frequencies;
the main control chip is further configured to control the second switch to be connected to any one of the plurality of sub-filtering channels, so that the connected sub-filtering channel outputs a harmonic wave of a corresponding frequency.
5. The harmonic testing system of claim 3 wherein the first test path further comprises: a second amplification module;
the input end of the second amplifying module is connected with the output end of the filtering channel, and the output end of the second amplifying module is connected with the input end of the radio frequency modem; the second amplifying module is used for amplifying the power of the harmonic wave output by the filtering channel.
6. The harmonic testing system of claim 5 wherein the first test path further comprises: one end of the third switch is connected with the output end of the filtering channel, and the other end of the third switch is connected with the second amplification module; the second amplification module comprises a plurality of sub-amplification modules which are respectively used for amplifying the power of harmonic waves with different frequencies;
the main control chip is further configured to control the third switch to be connected to any one of the plurality of sub-amplification modules, so that the connected sub-amplification module amplifies power of a harmonic wave of a corresponding frequency.
7. The harmonic testing system of any one of claims 3 to 6 wherein the first harmonic frequency range is: 699MHz to 2.7G.
8. The harmonic testing system of claim 1 wherein the second test path comprises:
the input end of the second high-pass filter is used for being connected with the other end of the first switch;
and the input end of the WIFI modem is connected with the output end of the second high-pass filter, and the output end of the WIFI modem is connected with the main control chip.
9. The harmonic testing system of claim 8 wherein the second test path further comprises: a third amplification module;
the input end of the third amplification module is connected with the output end of the second high-pass filter, and the output end of the third amplification module is connected with the input end of the WIFI modem.
10. The harmonic testing system of any one of claims 8 to 9, wherein the second harmonic frequency range is: 2.4G to 5.85G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111185004.8A CN113917230A (en) | 2021-10-12 | 2021-10-12 | Harmonic wave test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111185004.8A CN113917230A (en) | 2021-10-12 | 2021-10-12 | Harmonic wave test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113917230A true CN113917230A (en) | 2022-01-11 |
Family
ID=79239294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111185004.8A Pending CN113917230A (en) | 2021-10-12 | 2021-10-12 | Harmonic wave test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113917230A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007192657A (en) * | 2006-01-19 | 2007-08-02 | Renesas Technology Corp | Test system |
| CN102565672A (en) * | 2011-12-28 | 2012-07-11 | 镇江艾科半导体有限公司 | Radio-frequency power amplifier harmonic wave testing circuit based on PXI (PCI (Peripheral Component Interconnect) Extension For Instrumentation) testing device |
| US20120299579A1 (en) * | 2011-05-26 | 2012-11-29 | Tektronix, Inc. | Test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing |
| CN202663411U (en) * | 2012-05-29 | 2013-01-09 | 上海东方明珠传输有限公司 | Frequency modulation out of band harmonic detection system |
| US20140254217A1 (en) * | 2013-03-06 | 2014-09-11 | Rockwell Automation Technologies, Inc. | Method and apparatus for ripple and phase loss detection |
| CN207039613U (en) * | 2017-08-10 | 2018-02-23 | 深圳市金立通信设备有限公司 | A kind of radiofrequency signal harmonic wave self-check system and terminal |
| CN110187176A (en) * | 2019-05-31 | 2019-08-30 | 中国电力科学研究院有限公司 | A kind of mains by harmonics measuring device and method |
| US20200067613A1 (en) * | 2018-08-22 | 2020-02-27 | The Boeing Company | Harmonic intermodulation test system and method |
| CN111970171A (en) * | 2020-08-18 | 2020-11-20 | 合肥移瑞通信技术有限公司 | Automatic test system of radio frequency circuit in terminal equipment |
| CN112436902A (en) * | 2020-11-09 | 2021-03-02 | 维沃移动通信有限公司 | Signal detection circuit and electronic device |
| CN213364879U (en) * | 2020-09-10 | 2021-06-04 | 深圳市共进电子股份有限公司 | Harmonic testing device and harmonic testing system |
| CN214256302U (en) * | 2021-02-26 | 2021-09-21 | 合肥移瑞通信技术有限公司 | Radio frequency path and terminal equipment |
-
2021
- 2021-10-12 CN CN202111185004.8A patent/CN113917230A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007192657A (en) * | 2006-01-19 | 2007-08-02 | Renesas Technology Corp | Test system |
| US20120299579A1 (en) * | 2011-05-26 | 2012-11-29 | Tektronix, Inc. | Test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing |
| CN102565672A (en) * | 2011-12-28 | 2012-07-11 | 镇江艾科半导体有限公司 | Radio-frequency power amplifier harmonic wave testing circuit based on PXI (PCI (Peripheral Component Interconnect) Extension For Instrumentation) testing device |
| CN202663411U (en) * | 2012-05-29 | 2013-01-09 | 上海东方明珠传输有限公司 | Frequency modulation out of band harmonic detection system |
| US20140254217A1 (en) * | 2013-03-06 | 2014-09-11 | Rockwell Automation Technologies, Inc. | Method and apparatus for ripple and phase loss detection |
| CN207039613U (en) * | 2017-08-10 | 2018-02-23 | 深圳市金立通信设备有限公司 | A kind of radiofrequency signal harmonic wave self-check system and terminal |
| US20200067613A1 (en) * | 2018-08-22 | 2020-02-27 | The Boeing Company | Harmonic intermodulation test system and method |
| CN110187176A (en) * | 2019-05-31 | 2019-08-30 | 中国电力科学研究院有限公司 | A kind of mains by harmonics measuring device and method |
| CN111970171A (en) * | 2020-08-18 | 2020-11-20 | 合肥移瑞通信技术有限公司 | Automatic test system of radio frequency circuit in terminal equipment |
| CN213364879U (en) * | 2020-09-10 | 2021-06-04 | 深圳市共进电子股份有限公司 | Harmonic testing device and harmonic testing system |
| CN112436902A (en) * | 2020-11-09 | 2021-03-02 | 维沃移动通信有限公司 | Signal detection circuit and electronic device |
| CN214256302U (en) * | 2021-02-26 | 2021-09-21 | 合肥移瑞通信技术有限公司 | Radio frequency path and terminal equipment |
Non-Patent Citations (2)
| Title |
|---|
| 曾昕: "W波段高性能检波器与谐波混频器的研究", 东南大学, 15 January 2018 (2018-01-15), pages 15 - 30 * |
| 许灵洁;陈骁;郭鹏;李航康;吕几凡;: "谐波试验用宽频大电流发生装置研究", 电气技术, no. 07, 15 July 2018 (2018-07-15), pages 38 - 43 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11546192B2 (en) | Receiver circuits with blocker attenuating rf filter | |
| CN105119576B (en) | A kind of S frequency ranges continuous wave solid high power discharge device | |
| US7466999B2 (en) | Wireless communication device capable of switching to an external antenna module or an internal antenna module | |
| GB2347292A (en) | Economical bandpass filter arrangement for a multi-band mobile phone receiver | |
| CN106330218A (en) | Receiver and AGC control system capable of reducing noise coefficient and increasing isolation | |
| CN105429656B (en) | The signal processing apparatus of demodulation front end is received based on short wave bandwidth | |
| CN109950696B (en) | Rectifying antenna | |
| CN113917230A (en) | Harmonic wave test system | |
| CN103023458A (en) | Active power filter, duplexer and wireless communication equipment | |
| CN205029654U (en) | Processing apparatus is received to shortwave | |
| CN203896314U (en) | L waveband radio-frequency power amplification module | |
| EP0622907B1 (en) | A radio phone and method of operating a radio phone | |
| US20070063786A1 (en) | Balanced-to-unbalanced converter | |
| CN109120289A (en) | A kind of short-wave radio frequency front end processing block and method | |
| US20130307629A1 (en) | Power amplification circuit | |
| CN110098844B (en) | C-band two-way signal receiving device | |
| CN112202409A (en) | Low noise amplification module, receiver and signal processing method | |
| CN101826886A (en) | Transceiving device with functions of power amplification and frequency hopping | |
| KR20040110197A (en) | Apparatus for detecting spurious signal of opposite direction | |
| KR101668009B1 (en) | Signal rejection apparatus | |
| CN217240693U (en) | Radio frequency signal receiving channel circuit based on short wave band | |
| CN213752989U (en) | Signal processing device and combiner | |
| US7400871B2 (en) | Multi-antenna receiving and processing circuit assembly | |
| CN110518923B (en) | Radiation receiver | |
| CN220556457U (en) | Partial discharge signal acquisition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |