CN113219246B - Detection method for detecting power amplifier harmonic intensity detection device - Google Patents
Detection method for detecting power amplifier harmonic intensity detection device Download PDFInfo
- Publication number
- CN113219246B CN113219246B CN202110599738.4A CN202110599738A CN113219246B CN 113219246 B CN113219246 B CN 113219246B CN 202110599738 A CN202110599738 A CN 202110599738A CN 113219246 B CN113219246 B CN 113219246B
- Authority
- CN
- China
- Prior art keywords
- spectrum analyzer
- power amplifier
- value
- intensity
- harmonic
- 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.)
- Active
Links
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
-
- 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
- G01R23/18—Spectrum analysis; Fourier analysis with provision for recording frequency spectrum
Landscapes
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to a detection method for testing a power amplifier harmonic intensity detection device, which comprises the following process flows of: firstly, setting up detection configuration, manually changing default parameters inside a signal generator, manually changing the default parameters of a spectrum analyzer, recording the maximum fundamental wave peak value and the maximum harmonic peak value on the time-frequency spectrum analyzer, comparing the peak values, subtracting the fundamental wave peak value from the maximum harmonic peak value to obtain a difference value, receiving the set signal generator to transmit on the calibrated expected fundamental wave frequency and intensity, monitoring the fundamental wave and harmonic intensity on the spectrum analyzer after passing through a power amplifier, then comparing whether the fundamental wave intensity on the spectrum analyzer is greater than the harmonic intensity by 15dB, and if the fundamental wave intensity is greater than 15dB, indicating that the harmonic of the power amplifier meets the requirements, otherwise, not meeting the requirements. Therefore, the purpose of judging whether the internal harmonic intensity of the power amplifier exceeds the specified range is achieved. The invention has the advantages of rapidness, high efficiency and accuracy.
Description
Technical Field
The invention relates to a detection method for testing a power amplifier harmonic intensity detection device in the technical field of electromagnetic compatibility detection.
Background
Electronic components are important components of various electronic devices. Before various electronic devices are sold in the market, it is necessary for manufacturers to detect whether various electronic components or electronic devices can normally operate. And the power amplifier is a main instrument for detecting electronic components or electronic equipment. The performance of the power amplifier is easily reduced because the power amplifier is used frequently in our daily detection activities. The detection laboratory is particularly concerned with the use of power amplifiers because the total power measured by the power meter includes both fundamental and harmonic components, and harmonics can significantly affect the measurements made by the test level adjustment procedure. However, it is impossible to know whether the intensity of the harmonic wave in the power amplifier is out of a specific range.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a fast, efficient and accurate detection method for testing a harmonic intensity detection apparatus of a power amplifier, which can determine whether the internal harmonic intensity of the power amplifier exceeds a specified range.
To solve the above technical problem, the technical solution of the present invention is a detection method for testing a power amplifier harmonic intensity detection apparatus, where the detection apparatus using the detection method includes a coupling device, an attenuator, a spectrum analyzer, a transformer T2, a directional coupler, a power amplifier, a signal generator, and a power meter; the detection process of the detection method comprises the following steps:
firstly, connecting one end of a signal generator with one end of a power amplifier, connecting the other end of the power amplifier with a directional coupler, connecting a power meter in series with the directional coupler, connecting one end of a transformer T2 with the directional coupler, and connecting the other end of the transformer T2 with a coupling device; one end of the attenuator is connected with the coupling device, the other end of the attenuator is connected with the spectrum analyzer, and the detection configuration is built; and checking whether each device can be normally started;
secondly, manually changing default parameters inside the signal generator by an operator, and modifying the transmitting frequency of the signal generator to 0.15 MHz;
step three, an operator manually changes the emission intensity of a signal source in the signal generator to be 1V;
fourthly, an operator opens a transmitting switch in the signaling generator and transmits signals;
fifthly, manually changing default parameters of the spectrum analyzer by an operator, changing the default analysis bandwidth of the spectrum analyzer to 100KHz, changing the default frequency range of the spectrum analyzer to 100KHz to 1000MHz, changing the default attenuation parameters of the spectrum analyzer to 0dB, and manually changing the detection mode to peak detection;
a sixth step of recording the maximum fundamental wave peak value and the maximum harmonic wave peak value on the time-frequency spectrum analyzer;
step seven, comparing peak values, and subtracting a difference value obtained by the fundamental wave peak value from the maximum harmonic wave peak value, wherein the difference value is smaller than-15;
an eighth step of modifying the emission intensity value 1V in the third step to an emission intensity value 3V and an emission intensity value 10V, respectively, and then repeating the contents in the fourth step to the contents in the seventh step in sequence;
a ninth step of sequentially modifying the emission frequency value of 0.15MHz in the second step to an emission frequency value of 0.5MHz, an emission frequency value of 1MHz, an emission frequency value of 10MHz, an emission frequency value of 50MHz and an emission frequency value of 80MHz, and repeating the contents in the third step to the contents in the seventh step;
and step ten, summarizing and comparing the difference values in all the results, recording the difference values in the difference value table, and finally judging whether the results are qualified or unqualified.
The invention has the beneficial technical effects that: because of this application technical scheme is through adopting behind the detection device, receive and set up signal generator and launch on calibration anticipated fundamental wave frequency and intensity, monitor fundamental wave and harmonic intensity on the spectrum analyzer through power amplifier, then whether contrast fundamental wave intensity on the spectrum analyzer is greater than harmonic intensity 15dB, if be greater than 15dB then show power amplifier's harmonic satisfies the requirement, otherwise unsatisfied. Therefore, the purpose of judging whether the harmonic intensity in the power amplifier exceeds the specified range is achieved. Compared with the existing similar detection method, the method has the advantages of rapidness, high efficiency and accuracy.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and embodiments.
[ description of the drawings ]
FIG. 1 is a schematic diagram of the physical connection used in the detection method of the present invention;
FIG. 2 is a schematic diagram of the structural principles of the detection arrangement of the present invention;
FIG. 3 is a data statistics diagram of the difference table of the present invention.
[ detailed description ] embodiments
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3, a detection method for testing a harmonic intensity detection apparatus of a power amplifier is described below with reference to an embodiment, and the detection apparatus using the detection method includes a coupling apparatus, an attenuator, a spectrum analyzer, a transformer T2, a directional coupler, a power amplifier, a signal generator, and a power meter. One end of the coupling device is connected with an attenuator, and the other end of the coupling device is connected with a transformer T2.
The other end of the attenuator is connected with the spectrum analyzer, the other end of the transformer T2 is connected with the directional coupler, one end of the directional coupler is connected with the power amplifier, the other end of the power amplifier is connected with the signal generator, and the power meter is connected in series with the directional coupler to build the detection configuration.
The detection method for testing the harmonic intensity of the power amplifier by using the detection configuration comprises the following steps:
firstly, a user connects one end of a signal generator with one end of a power amplifier, the other end of the power amplifier is connected with a directional coupler, a power meter is connected with the directional coupler in series, one end of a transformer T2 is connected with the directional coupler, and the other end of the transformer T2 is connected with a coupling device; one end of the attenuator is connected with the coupling device, the other end of the attenuator is connected with the spectrum analyzer, and the detection configuration is built; and checking whether each device can be normally started;
secondly, manually changing default parameters inside the signal generator by an operator, and modifying the transmitting frequency of the signal generator to 0.15 MHz;
step three, an operator manually changes the emission intensity of a signal source in the signal generator to be 1V;
fourthly, an operator opens a transmitting switch in the signaling generator and carries out signal transmitting action;
fifthly, manually changing default parameters of the spectrum analyzer by an operator, changing the default analysis bandwidth of the spectrum analyzer to 100KHz, changing the default frequency range of the spectrum analyzer to 100KHz to 1000MHz, changing the default attenuation parameters of the spectrum analyzer to 0dB, and manually changing the detection mode to peak detection;
a sixth step of recording the maximum fundamental wave peak value and the maximum harmonic wave peak value on the time-frequency spectrum analyzer;
step seven, comparing peak values, and subtracting a difference value obtained by the fundamental wave peak value from the maximum harmonic wave peak value, wherein the difference value is smaller than-15;
an eighth step of modifying the emission intensity value 1V in the third step to an emission intensity value 3V and an emission intensity value 10V, respectively, and then repeating the contents in the fourth step to the contents in the seventh step in sequence;
a ninth step of sequentially modifying the emission frequency value of 0.15MHz in the second step to an emission frequency value of 0.5MHz, an emission frequency value of 1MHz, an emission frequency value of 10MHz, an emission frequency value of 50MHz and an emission frequency value of 80MHz, and repeating the contents in the third step to the contents in the seventh step;
and step ten, summarizing and comparing the difference values in all the results, recording the difference values in the difference value table, and finally judging whether the results are qualified or unqualified.
In the detection method, after the detection device is adopted, the received signal is transmitted by the signal generator on the basis of the expected fundamental wave frequency and intensity, the fundamental wave and the harmonic wave intensity are monitored on the spectrum analyzer after passing through the power amplifier, then whether the fundamental wave intensity on the spectrum analyzer is greater than the harmonic wave intensity by 15dB or not is compared, if the fundamental wave intensity on the spectrum analyzer is greater than 15dB, the harmonic wave of the power amplifier meets the requirement, and otherwise, the harmonic wave does not meet the requirement. Therefore, the purpose of judging whether the harmonic intensity in the power amplifier exceeds the specified range is achieved. Compared with the existing similar detection method, the method has the advantages of rapidness, high efficiency and accuracy.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present invention are intended to be within the scope of the claims.
Claims (1)
1. A detection method for testing a power amplifier harmonic intensity detection device comprises a coupling device, an attenuator, a spectrum analyzer, a transformer T2, a directional coupler, a power amplifier, a signal generator and a power meter; the detection process of the detection method comprises the following steps:
firstly, connecting one end of a signal generator with one end of a power amplifier, connecting the other end of the power amplifier with a directional coupler, connecting a power meter in series with the directional coupler, connecting one end of a transformer T2 with the directional coupler, and connecting the other end of the transformer T2 with a coupling device; one end of the attenuator is connected with the coupling device, the other end of the attenuator is connected with the spectrum analyzer, and the detection configuration is built; and checking whether each device can be normally started;
secondly, manually changing default parameters inside the signal generator by an operator, and modifying the transmitting frequency of the signal generator to 0.15 MHz;
step three, an operator manually changes the emission intensity of a signal source in the signal generator to be 1V;
fourthly, an operator opens a transmitting switch in the signaling generator and transmits signals;
fifthly, manually changing default parameters of the spectrum analyzer by an operator, changing the default analysis bandwidth of the spectrum analyzer to 100KHz, changing the default frequency range of the spectrum analyzer to 100KHz to 1000MHz, changing the default attenuation parameters of the spectrum analyzer to 0dB, and manually changing the detection mode to peak detection;
a sixth step of recording the maximum fundamental wave peak value and the maximum harmonic wave peak value on the time-frequency spectrum analyzer;
step seven, comparing peak values, and subtracting a difference value obtained by the fundamental wave peak value from the maximum harmonic wave peak value, wherein the difference value is smaller than-15;
an eighth step of modifying the emission intensity value 1V in the third step to an emission intensity value 3V and an emission intensity value 10V, respectively, and then repeating the contents in the fourth step to the contents in the seventh step in sequence;
a ninth step of sequentially modifying the emission frequency value of 0.15MHz in the second step to an emission frequency value of 0.5MHz, an emission frequency value of 1MHz, an emission frequency value of 10MHz, an emission frequency value of 50MHz and an emission frequency value of 80MHz, and repeating the contents in the third step to the contents in the seventh step;
and step ten, summarizing and comparing the difference values in all the results, recording the difference values in the difference value table, and finally judging whether the results are qualified or unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110599738.4A CN113219246B (en) | 2021-05-31 | 2021-05-31 | Detection method for detecting power amplifier harmonic intensity detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110599738.4A CN113219246B (en) | 2021-05-31 | 2021-05-31 | Detection method for detecting power amplifier harmonic intensity detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113219246A CN113219246A (en) | 2021-08-06 |
| CN113219246B true CN113219246B (en) | 2022-02-22 |
Family
ID=77081707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110599738.4A Active CN113219246B (en) | 2021-05-31 | 2021-05-31 | Detection method for detecting power amplifier harmonic intensity detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113219246B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU746320A1 (en) * | 1978-03-30 | 1980-07-07 | Предприятие П/Я А-7501 | Apparatus for measuring harmonic coefficient of power amplifier |
| JPH05267965A (en) * | 1992-03-18 | 1993-10-15 | Nec Ic Microcomput Syst Ltd | Time constant circuit |
| CN201698000U (en) * | 2010-06-29 | 2011-01-05 | 国民技术股份有限公司 | Automatic testing system of radio-frequency power amplifier based on mixed bus |
| CN102323531A (en) * | 2011-05-26 | 2012-01-18 | 中国科学院上海微系统与信息技术研究所 | Method for automatically testing parameters of millimeter wave power amplifier and 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 |
| CN105067989A (en) * | 2015-07-06 | 2015-11-18 | 电子科技大学 | Universal automatic test system and automatic test method for power amplifier |
| CN105548707A (en) * | 2015-12-11 | 2016-05-04 | 中国电子科技集团公司第四十一研究所 | Method and system for automatically measuring electromagnetic signal harmonic distortion |
| CN106338650A (en) * | 2016-10-21 | 2017-01-18 | 国网安徽省电力公司培训中心 | Harmonic wave measurement circuit |
| KR101735776B1 (en) * | 2017-01-31 | 2017-05-15 | 주식회사 일산이엔지 | Power line monitoring methodology and its device for detection of certain harmonic frequency based on contactless pick-up coil including signal mixing and resonance circuit |
| CN107543963A (en) * | 2017-08-22 | 2018-01-05 | 电子科技大学 | A kind of travelling-wave tubes harmonic wave compares Auto-Test System |
| CN110007209A (en) * | 2018-07-24 | 2019-07-12 | 浙江铖昌科技有限公司 | GaN power amplifier chip automates On-wafer measurement system |
| CN110297126A (en) * | 2018-03-21 | 2019-10-01 | 中国科学院金属研究所 | The frequency spectrum multiple scale analysis method of testing of instrumentation amplifier Frequency Response |
| CN111693777A (en) * | 2020-04-29 | 2020-09-22 | 杭州电子科技大学 | Duplexer-based high-frequency multiple harmonic impedance synthesis testing device and method |
-
2021
- 2021-05-31 CN CN202110599738.4A patent/CN113219246B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU746320A1 (en) * | 1978-03-30 | 1980-07-07 | Предприятие П/Я А-7501 | Apparatus for measuring harmonic coefficient of power amplifier |
| JPH05267965A (en) * | 1992-03-18 | 1993-10-15 | Nec Ic Microcomput Syst Ltd | Time constant circuit |
| CN201698000U (en) * | 2010-06-29 | 2011-01-05 | 国民技术股份有限公司 | Automatic testing system of radio-frequency power amplifier based on mixed bus |
| CN102323531A (en) * | 2011-05-26 | 2012-01-18 | 中国科学院上海微系统与信息技术研究所 | Method for automatically testing parameters of millimeter wave power amplifier and 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 |
| CN105067989A (en) * | 2015-07-06 | 2015-11-18 | 电子科技大学 | Universal automatic test system and automatic test method for power amplifier |
| CN105548707A (en) * | 2015-12-11 | 2016-05-04 | 中国电子科技集团公司第四十一研究所 | Method and system for automatically measuring electromagnetic signal harmonic distortion |
| CN106338650A (en) * | 2016-10-21 | 2017-01-18 | 国网安徽省电力公司培训中心 | Harmonic wave measurement circuit |
| KR101735776B1 (en) * | 2017-01-31 | 2017-05-15 | 주식회사 일산이엔지 | Power line monitoring methodology and its device for detection of certain harmonic frequency based on contactless pick-up coil including signal mixing and resonance circuit |
| CN107543963A (en) * | 2017-08-22 | 2018-01-05 | 电子科技大学 | A kind of travelling-wave tubes harmonic wave compares Auto-Test System |
| CN110297126A (en) * | 2018-03-21 | 2019-10-01 | 中国科学院金属研究所 | The frequency spectrum multiple scale analysis method of testing of instrumentation amplifier Frequency Response |
| CN110007209A (en) * | 2018-07-24 | 2019-07-12 | 浙江铖昌科技有限公司 | GaN power amplifier chip automates On-wafer measurement system |
| CN111693777A (en) * | 2020-04-29 | 2020-09-22 | 杭州电子科技大学 | Duplexer-based high-frequency multiple harmonic impedance synthesis testing device and method |
Non-Patent Citations (3)
| Title |
|---|
| Ka波段二次谐波回旋行波管放大器的研究;李志良等;《真空电子技术》;20100228;第41-44页 * |
| Stable High-Power Second-Harmonic Coaxial-Waveguide Gyrotron Traveling-Wave-Tube Amplifier;Chien-Lun Hung;《 IEEE Transactions on Plasma Science 》;20120131;第1545-1550页 * |
| TDLAS专用数字锁相放大器设计及CO2检测研究;崔晨晨;《中国优秀硕士学位论文全文数据库 工程科技I辑》;20210215(第02期);第B015-198页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113219246A (en) | 2021-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120309322A1 (en) | Standing Wave Detection Method, Standing Wave Detection Apparatus and Base Station | |
| CN102116808B (en) | Test device for testing radiosensitivity of electric field and test method thereof | |
| CN109245836B (en) | Testing device and method for multi-channel equipment | |
| CN103323807A (en) | Assessment check and magnitude calibration method for ultrahigh-frequency partial-discharging tester | |
| CN105429714B (en) | A kind of T/R component test devices and equipment safety method of calibration | |
| CN206321749U (en) | A kind of shelf depreciation high frequency electric detection means | |
| US20130033270A1 (en) | Electromagnetic interference test sytem with self-checking function and self-checking method | |
| CN104535955A (en) | Calibration device and method of transformer frequency response method winding deformation tester | |
| CN104931911A (en) | Calibration device and method of ultra-high frequency partial discharge sensor | |
| JPH07508101A (en) | Antenna status management method and device | |
| CN104898027A (en) | Multifunctional communication signal measurement radio frequency front-end circuit | |
| CN110988490A (en) | Power filter differential loss time domain measurement system and method | |
| CN113219246B (en) | Detection method for detecting power amplifier harmonic intensity detection device | |
| CN108008363B (en) | Calibration system for quantitative measurement radar | |
| CN113765601A (en) | Short-wave transmitter standing wave detection calibration device and method | |
| CN109407026B (en) | Evaluation device and method for ultrahigh frequency partial discharge instrument | |
| CN204705691U (en) | A kind of radio-frequency (RF) front-end circuit of multifunctional communication signal measurement | |
| CN215415839U (en) | High-frequency current transformer sensitivity test circuit based on oscillation wave partial discharge test | |
| CN115078854A (en) | Method for measuring field intensity of rectangular pulse modulation periodic signal radiation field | |
| CN112230069A (en) | Integrated circuit electromagnetic interference diagnostic system and method | |
| CN117723639B (en) | Ultrasonic flaw detector verification calibrating device | |
| Chen et al. | Diagnosis of EMI to laptop WWAN device from TFT-LCD driver using non-contact measurement-based transfer function technique | |
| CN109286454A (en) | Signal intensity monitoring device, electronic device are damaged detection device and method | |
| TWI429922B (en) | Non-contact measurement method for electromagnetic interference | |
| CN212749037U (en) | Insertion loss measuring 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |