CN112152733B - System and method for accurately measuring output power of AM broadcast transmitter - Google Patents
System and method for accurately measuring output power of AM broadcast transmitter Download PDFInfo
- Publication number
- CN112152733B CN112152733B CN202011366602.0A CN202011366602A CN112152733B CN 112152733 B CN112152733 B CN 112152733B CN 202011366602 A CN202011366602 A CN 202011366602A CN 112152733 B CN112152733 B CN 112152733B
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- power
- calibration
- electrically connected
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/102—Power radiated at antenna
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/36—Arrangements for simultaneous broadcast of plural pieces of information for AM broadcasts
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transmitters (AREA)
Abstract
The utility model provides a system and a method for accurately measuring the output power of an amplitude modulation broadcast transmitter, which comprises a signal acquisition unit, a signal receiving unit, a signal processing unit, a signal transmission unit and a numerical value output display unit which are electrically connected in turn; the signal acquisition unit is used for acquiring two signals to be detected from a directional coupler of a broadcast amplitude modulation transmitter, and respectively recording the two signals as an incident power signal and a reflected power signal; the signal receiving unit is used for receiving signals and respectively carrying out analog-to-digital conversion and gain adjustment on the signals so as to obtain digital signals; the signal processing unit is used for analyzing and extracting the characteristics of the digital signals respectively, calculating the amplitude value and obtaining the power value before calibration; the signal transmission unit is used for transmitting the pre-calibration power value to the numerical value output display unit; and the numerical value output display unit is used for carrying out gain adjustment and calibration on the power value before calibration and displaying the output power value after calibration. The output power of an amplitude modulated broadcast transmitter can be accurately measured.
Description
Technical Field
The disclosure belongs to the technical field of amplitude modulation broadcast power measurement, and particularly relates to a system and a method for accurately measuring output power of an amplitude modulation broadcast transmitter.
Background
Since the birth of the first am broadcasting transmitter, the output power becomes a key topic. The output power of an am broadcasting transmitter is also the most important technical parameter in all radio frequency devices, and is also a very important technical index for radio station management departments. With the development of the broadcast television industry, the output power of an amplitude modulation broadcast transmitter is more strictly limited, and the original measuring method cannot meet the requirement of more accurate measurement; the present solution provides a method for accurately measuring broadcast transmitter power.
At present, the modes of a calorimetric method, a current-resistance method and a voltage-resistance method are adopted at home and abroad to measure the power, but the measuring method has lower precision and poorer stability.
Disclosure of Invention
The present disclosure is directed to solving at least one of the problems of the prior art and to providing a system and method for accurately measuring the output power of an am broadcast transmitter.
In one aspect of the present disclosure, a system for accurately measuring output power of an amplitude modulation broadcast transmitter is provided, the system comprising a signal acquisition unit, a signal receiving unit, a signal processing unit, a signal transmission unit and a numerical output display unit which are electrically connected in sequence;
the signal acquisition unit is used for acquiring two signals to be detected from a directional coupler of a broadcast amplitude modulation transmitter, and respectively recording the two signals as an incident power signal and a reflected power signal;
the signal receiving unit is used for receiving the incident power signal and the reflected power signal and respectively performing analog-to-digital conversion and gain adjustment on the incident power signal and the reflected power signal to obtain an incident power digital signal and a reflected power digital signal;
the signal processing unit is used for analyzing and extracting the characteristics of the incident power digital signal and the reflected power digital signal respectively, calculating the amplitude values of the incident power digital signal and the reflected power digital signal and obtaining a pre-calibration power value;
the signal transmission unit is used for transmitting the pre-calibration power value to the numerical value output display unit;
and the numerical value output display unit is used for carrying out gain adjustment and calibration on the pre-calibration power value and displaying the calibrated power value.
In some optional embodiments, the signal acquisition unit comprises an attenuation module, an impedance matching network, and an acquisition module; wherein the content of the first and second substances,
the input end of the attenuation module is used for being electrically connected with a directional coupler so as to attenuate the incident power signal and the reflected power signal;
the input end of the impedance matching network is electrically connected with the output end of the attenuation module so as to perform impedance matching on the attenuated incident power signal and the attenuated reflected power signal;
the input end of the acquisition module is electrically connected with the output end of the impedance matching network so as to acquire the matched incident power signal and the matched reflected power signal.
In some optional embodiments, the signal receiving unit comprises a differential/single-ended signal receiving module, an analog-to-digital conversion module, and a first gain adjustment module; wherein the content of the first and second substances,
the input end of the differential/single-ended signal receiving module is electrically connected with the output end of the signal acquisition unit, and the output end of the differential/single-ended signal receiving module is electrically connected with the input end of the analog-to-digital conversion module;
the input end of the first gain adjustment module is electrically connected with the output end of the analog-to-digital conversion module, and the output end of the first gain adjustment module is electrically connected with the input end of the signal processing unit.
In some optional embodiments, the differential/single-ended signal receiving module adopts a differential/single-ended signal receiver of a model T3-1T-KK81 +; and/or the presence of a gas in the gas,
the analog-to-digital conversion module adopts an AD9463 chip.
In some optional embodiments, the signal processing unit comprises a filtering module, a smoothing module, an extraction module, and a calculation module;
the input end of the filtering module is electrically connected with the output end of the signal receiving unit so as to filter the incident power digital signal and the reflected power digital signal and reduce the signal rate;
the input end of the smoothing processing module is electrically connected with the output end of the filtering module so as to perform orthogonal transformation and smoothing processing on the incident power digital signal and the reflected power digital signal after filtering processing;
the input end of the extraction module is electrically connected with the output end of the smoothing processing module so as to extract the characteristics of the incident power digital signal and the reflected power digital signal after smoothing processing;
the input end of the calculation module is electrically connected with the output end of the extraction module so as to calculate the amplitude values of the incident power digital signal and the reflected power digital signal according to the extracted characteristics and obtain the pre-calibration power value.
In some optional embodiments, the filtering module employs an integrating comb filter.
In some optional embodiments, the signal processing unit adopts a chip with a model of EPCEP4CE115F29C7N, and the filtering module, the smoothing module, the extracting module and the calculating module are designed on the chip.
In some optional embodiments, the numerical value output display unit comprises a second gain adjustment module, a calibration module, a verification module and a display module;
the input end of the second gain adjustment module is electrically connected with the output end of the signal transmission unit so as to receive the pre-calibration power value and perform gain adjustment on the pre-calibration power value;
the input end of the calibration module is electrically connected with the output end of the second gain adjustment module so as to calibrate the pre-calibration power value after gain adjustment to obtain a calibrated power value;
the input end of the inspection module is electrically connected with the output end of the calibration module so as to inspect whether the calibrated power value meets a preset value;
and the input end of the display module is electrically connected with the output end of the inspection module so as to display the calibrated power value which accords with the preset value.
In some optional embodiments, the calibration module is configured to add an offset to the pre-calibration power value after the gain adjustment to obtain the calibrated power value.
In another aspect of the present disclosure, there is provided a method for accurately measuring output power of an amplitude-modulated broadcast transmitter, the method comprising:
two signals to be measured are taken from a directional coupler of a broadcast amplitude modulation transmitter and are respectively recorded as an incident power signal and a reflected power signal;
receiving the incident power signal and the reflected power signal, and respectively performing analog-to-digital conversion and gain adjustment on the incident power signal and the reflected power signal to obtain an incident power digital signal and a reflected power digital signal;
analyzing and extracting the characteristics of the incident power digital signal and the reflected power digital signal respectively, and calculating the amplitude values of the incident power digital signal and the reflected power digital signal to obtain a pre-calibration power value;
and performing gain adjustment and calibration on the amplitude value, and displaying the calibrated power value.
The disclosed system and method for accurately measuring output power of an amplitude modulation broadcast transmitter includes the steps of firstly, carrying out analog-to-digital conversion and gain adjustment on collected incident power signals and reflected power signals to obtain power digital signals, then analyzing and extracting characteristics of the power digital signals, calculating amplitude values to obtain a pre-calibration power value, and finally carrying out gain adjustment and calibration on the pre-calibration power value, so that the output power of the amplitude modulation broadcast transmitter can be accurately measured.
Drawings
FIG. 1 is a schematic block diagram of a system for accurately measuring the output power of an amplitude modulated broadcast transmitter in accordance with one embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a signal acquisition unit according to another embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a signal receiving unit according to another embodiment of the disclosure;
fig. 4 is a schematic structural diagram of a signal processing unit according to another embodiment of the disclosure;
FIG. 5 is a schematic structural diagram of a numerical output display unit according to another embodiment of the present disclosure;
FIG. 6 is a flow chart of calibrating power values according to another embodiment of the present disclosure;
fig. 7 is a flowchart of a method for accurately measuring output power of an amplitude modulated broadcast transmitter according to another embodiment of the present disclosure.
Detailed Description
For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1, a system 100 for accurately measuring output power of an am broadcast transmitter includes a signal acquisition unit 110, a signal receiving unit 120, a signal processing unit 130, a signal transmission unit 140, and a value output display unit 150, which are electrically connected in sequence.
Specifically, as shown in fig. 1, the signal acquisition unit 110 is configured to acquire two signals to be measured from a directional coupler of a broadcast amplitude modulation transmitter, and record the two signals to be measured as an incident power signal and a reflected power signal respectively. The signal receiving unit 120 is configured to receive the incident power signal and the reflected power signal, and perform analog-to-digital conversion and gain adjustment on the incident power signal and the reflected power signal, respectively, to obtain an incident power digital signal and a reflected power digital signal. The signal processing unit 130 is configured to analyze and extract features of the incident power digital signal and the reflected power digital signal, respectively, calculate amplitudes of the incident power digital signal and the reflected power digital signal, and obtain a pre-calibration power value. The signal transmission unit 140 is configured to transmit the pre-calibration power value to the numerical output display unit 150. The numerical value output display unit 150 is configured to perform gain adjustment and calibration on the pre-calibration power value, and display a calibrated power value.
The system for accurately measuring the output power of the amplitude modulation broadcast transmitter of the embodiment first performs analog-to-digital conversion and gain adjustment on the collected incident power signal and reflected power signal to obtain a power digital signal, then performs analysis and extraction on the characteristics of the power digital signal, calculates the amplitude value to obtain a pre-calibration power value, and finally performs gain adjustment and calibration on the pre-calibration power value, so that the output power of the amplitude modulation broadcast transmitter can be accurately measured.
Illustratively, as shown in fig. 2, the signal acquisition unit 110 includes an attenuation module 111, an impedance matching network 112, and an acquisition module 113. The input end of the attenuation module 111 is used for electrically connecting with a directional coupler to attenuate the incident power signal and the reflected power signal. The input end of the impedance matching network 112 is electrically connected to the output end of the attenuation module 111 to perform impedance matching on the attenuated incident power signal and the attenuated reflected power signal. For example, the impedance of the incident power signal may be 50 Ω, and the impedance of the reflected power signal may be 100 Ω, and besides, those skilled in the art may select to match the impedance of the incident power signal and the impedance of the reflected power signal to some other values according to actual needs, which is not limited in this embodiment. The input end of the collecting module 113 is electrically connected to the output end of the impedance matching network 112 to collect the matched incident power signal and the matched reflected power signal.
Illustratively, as shown in fig. 3, the signal receiving unit 120 includes a differential/single-ended signal receiving module 121, an analog-to-digital conversion module 122, and a first gain adjustment module 123. An input end of the differential/single-ended signal receiving module 121 is electrically connected to an output end of the signal acquiring unit 110, and an output end of the differential/single-ended signal receiving module 121 is electrically connected to an input end of the analog-to-digital converting module 122. The input end of the first gain adjustment module 123 is electrically connected to the output end of the analog-to-digital conversion module 122, and the output end of the first gain adjustment module 123 is electrically connected to the input end of the signal processing unit 130.
The system of the embodiment adopts the differential/single-ended signal receiving module, so that the anti-interference capability of the system can be effectively improved, and the signal-to-noise ratio of the system can be improved; and can effectively suppress Electromagnetic Interference (EMI), thereby improving signal reception capability.
For example, the differential/single-ended signal receiving module 121 may adopt a differential/single-ended signal receiver of a type T3-1T-KK81 +. The analog-to-digital conversion module 122 adopts an AD9463 chip.
Illustratively, as shown in fig. 4, the signal processing unit includes a filtering module 131, a smoothing module 132, an extracting module 133, and a calculating module 134. An input terminal of the filtering module 131 is electrically connected to an output terminal of the signal receiving unit 120 to filter the incident power digital signal and the reflected power digital signal to reduce a signal rate. The input end of the smoothing module 132 is electrically connected to the output end of the filtering module 131, so as to perform orthogonal transformation and smoothing on the filtered incident power digital signal and the filtered reflected power digital signal. The input end of the extracting module 133 is electrically connected to the output end of the smoothing module 132, so as to perform feature extraction on the smoothed incident power digital signal and the smoothed reflected power digital signal. The input end of the calculating module 134 is electrically connected to the output end of the extracting module 133, so as to calculate the amplitudes of the incident power digital signal and the reflected power digital signal according to the extracted features, and obtain the pre-calibration power value.
For example, the filtering module 131 may adopt an integrating comb filter, and of course, a person skilled in the art may also adopt other filters, which is not limited in this embodiment.
Illustratively, the signal processing unit 130 may adopt a chip with a model of EPCEP4CE115F29C7N, and the filtering module 131, the smoothing module 132, the extracting module 133, and the calculating module 134 are designed on the chip. That is, some logic code implementations may be written on an EPCEP4CE115F29C7N chip, etc.
For example, as shown in fig. 5, the numerical value output display unit 150 may employ an upper computer, and the numerical value output display unit 150 may include a second gain adjustment module 151, a calibration module 152, a verification module 153, and a display module 154. An input end of the second gain adjustment module 151 is electrically connected to an output end of the signal transmission unit 140, so as to receive the pre-calibration power value and perform gain adjustment on the pre-calibration power value. The input end of the calibration module 152 is electrically connected to the output end of the second gain adjustment module 151, so as to calibrate the pre-calibration power value after gain adjustment, and obtain a calibrated power value. An input end of the checking module 153 is electrically connected to an output end of the calibrating module 152, so as to check whether the calibrated power value meets a preset value. The input terminal of the display module 154 is electrically connected to the output terminal of the inspection module 153 to display the calibrated power value meeting the preset value.
Illustratively, the calibration module 152 is configured to add an offset to the pre-calibration power value after the gain adjustment to obtain the calibrated power value.
Specifically, as shown in fig. 6, the pre-calibration power value is first processed by the automatic gain. And adding an offset on the basis, and processing the two steps to obtain a calibrated power value, wherein the calibrated power value is an actual measured value.
It should be noted that the reference values of the automatic gain and the offset may be automatically calculated by the upper computer according to the previous data, or may be specific values given by an engineer according to the environment and the equipment on the site, which is not limited in this embodiment. Once these two reference values are determined, in general, no modification is required; these two reference values need to be updated only in the case of a replacement of the device, a replacement of the environment.
In addition, the checking module 153 checks the power value (i.e., the result of the power measurement) calculated by the previous module (the calibration module 152); the method of checking may be by comparing the power value estimated from the state value of each device with the measurement value of the scheme in order to perform a post-evaluation of the measurement method.
In summary, the system for accurately measuring the output power of the am broadcast transmitter disclosed by the present disclosure, from a completely new perspective, utilizes a combination of software and hardware, fully utilizes the advantages of each component, and uses a high-quality attenuator, a high-speed analog-to-digital converter (ADC), an FPGA and software to cooperate to measure the power, so that the accuracy (+/-3%) is better than that of the traditional measurement method, and the stability is far better than that of other technical solutions.
In another aspect of the present disclosure, a method for accurately measuring output power of an am broadcast transmitter is provided, which may employ the system described above, and specifically refer to the related description, and will not be described herein. As shown in fig. 7, the method includes:
s110, two signals to be measured are taken from a directional coupler of a broadcast amplitude modulation transmitter and are respectively recorded as an incident power signal and a reflected power signal;
s120, receiving the incident power signal and the reflected power signal, and respectively performing analog-to-digital conversion and gain adjustment on the incident power signal and the reflected power signal to obtain an incident power digital signal and a reflected power digital signal;
s130, analyzing and extracting the characteristics of the incident power digital signal and the reflected power digital signal respectively, and calculating the amplitude values of the incident power digital signal and the reflected power digital signal to obtain a pre-calibration power value;
and S140, performing gain adjustment and calibration on the pre-calibration power value, and displaying the calibrated power value.
The method for accurately measuring the output power of the amplitude modulation broadcast transmitter comprises the steps of firstly carrying out analog-to-digital conversion and gain adjustment on an incident power signal and a reflected power signal which are collected to obtain a power digital signal, then analyzing and extracting the characteristics of the power digital signal, and calculating an amplitude value to obtain a power value before calibration; finally, gain adjustment and calibration are carried out on the pre-calibration power value, so that the output power of the amplitude modulation broadcast transmitter can be accurately measured.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.
Claims (9)
1. A system for accurately measuring the output power of an amplitude modulation broadcast transmitter is characterized by comprising a signal acquisition unit, a signal receiving unit, a signal processing unit, a signal transmission unit and a numerical value output display unit which are electrically connected in sequence;
the signal acquisition unit is used for acquiring two signals to be detected from a directional coupler of an amplitude modulation broadcast transmitter, and respectively recording the two signals as an incident power signal and a reflected power signal;
the signal receiving unit is used for receiving the incident power signal and the reflected power signal and respectively performing analog-to-digital conversion and gain adjustment on the incident power signal and the reflected power signal to obtain an incident power digital signal and a reflected power digital signal;
the signal processing unit is used for analyzing and extracting the characteristics of the incident power digital signal and the reflected power digital signal respectively, calculating the amplitude values of the incident power digital signal and the reflected power digital signal and obtaining a pre-calibration power value;
the signal transmission unit is used for transmitting the pre-calibration power value to the numerical value output display unit;
the numerical value output display unit is used for carrying out gain adjustment and calibration on the pre-calibration power value and displaying the calibrated power value;
the signal acquisition unit comprises an attenuation module, an impedance matching network and an acquisition module; wherein the content of the first and second substances,
the input end of the attenuation module is used for being electrically connected with a directional coupler so as to attenuate the incident power signal and the reflected power signal;
the input end of the impedance matching network is electrically connected with the output end of the attenuation module so as to perform impedance matching on the attenuated incident power signal and the attenuated reflected power signal;
the input end of the acquisition module is electrically connected with the output end of the impedance matching network so as to acquire the matched incident power signal and the matched reflected power signal.
2. The system of claim 1, wherein the signal receiving unit comprises a differential/single-ended signal receiving module, an analog-to-digital conversion module, and a first gain adjustment module; wherein the content of the first and second substances,
the input end of the differential/single-ended signal receiving module is electrically connected with the output end of the signal acquisition unit, and the output end of the differential/single-ended signal receiving module is electrically connected with the input end of the analog-to-digital conversion module;
the input end of the first gain adjustment module is electrically connected with the output end of the analog-to-digital conversion module, and the output end of the first gain adjustment module is electrically connected with the input end of the signal processing unit.
3. The system of claim 2, wherein the differential/single-ended signal receiving module employs a differential/single-ended signal receiver model T3-1T-KK81 +; and/or the presence of a gas in the gas,
the analog-to-digital conversion module adopts an AD9463 chip.
4. The system of claim 1, wherein the signal processing unit comprises a filtering module, a smoothing module, an extraction module, and a calculation module;
the input end of the filtering module is electrically connected with the output end of the signal receiving unit so as to filter the incident power digital signal and the reflected power digital signal and reduce the signal rate;
the input end of the smoothing processing module is electrically connected with the output end of the filtering module so as to perform orthogonal transformation and smoothing processing on the incident power digital signal and the reflected power digital signal after filtering processing;
the input end of the extraction module is electrically connected with the output end of the smoothing processing module so as to extract the characteristics of the incident power digital signal and the reflected power digital signal after smoothing processing;
the input end of the calculation module is electrically connected with the output end of the extraction module so as to calculate the amplitude values of the incident power digital signal and the reflected power digital signal according to the extracted characteristics and obtain the pre-calibration power value.
5. The system of claim 4, wherein the filtering module employs an integrating comb filter.
6. The system of claim 4, wherein the signal processing unit adopts a chip with model number EPCEP4CE115F29C7N, and the filtering module, the smoothing module, the extracting module and the calculating module are designed on the chip.
7. The system according to any one of claims 1 to 6, wherein the numerical value output display unit comprises a second gain adjustment module, a calibration module, a verification module and a display module;
the input end of the second gain adjustment module is electrically connected with the output end of the signal transmission unit so as to receive the pre-calibration power value and perform gain adjustment on the pre-calibration power value;
the input end of the calibration module is electrically connected with the output end of the second gain adjustment module so as to calibrate the pre-calibration power value after gain adjustment to obtain a calibrated power value;
the input end of the inspection module is electrically connected with the output end of the calibration module so as to inspect whether the calibrated power value meets a preset value;
and the input end of the display module is electrically connected with the output end of the inspection module so as to display the calibrated power value which accords with the preset value.
8. The system of claim 7, wherein the calibration module is configured to add an offset to the pre-calibration power value after the gain adjustment to obtain the calibrated power value.
9. A method for accurately measuring output power of an amplitude modulated broadcast transmitter, the method comprising:
taking two signals to be measured from a directional coupler of an amplitude modulation broadcast transmitter, and respectively recording the two signals as an incident power signal and a reflected power signal;
receiving the incident power signal and the reflected power signal, and respectively performing analog-to-digital conversion and gain adjustment on the incident power signal and the reflected power signal to obtain an incident power digital signal and a reflected power digital signal;
analyzing and extracting the characteristics of the incident power digital signal and the reflected power digital signal respectively, and calculating the amplitude values of the incident power digital signal and the reflected power digital signal to obtain a pre-calibration power value;
performing gain adjustment and calibration on the pre-calibration power value, and displaying the calibrated power value;
prior to analog-to-digital converting and gain adjusting the incident power signal and the reflected power signal, the method further comprises:
attenuating the incident power signal and the reflected power signal;
impedance matching is carried out on the attenuated incident power signal and the attenuated reflected power signal;
and acquiring the matched incident power signal and the matched reflected power signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011366602.0A CN112152733B (en) | 2020-11-30 | 2020-11-30 | System and method for accurately measuring output power of AM broadcast transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011366602.0A CN112152733B (en) | 2020-11-30 | 2020-11-30 | System and method for accurately measuring output power of AM broadcast transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112152733A CN112152733A (en) | 2020-12-29 |
| CN112152733B true CN112152733B (en) | 2021-02-26 |
Family
ID=73887288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011366602.0A Active CN112152733B (en) | 2020-11-30 | 2020-11-30 | System and method for accurately measuring output power of AM broadcast transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112152733B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114785429B (en) * | 2022-06-22 | 2022-08-23 | 北京埃比瑞斯科技有限责任公司 | Method and system for measuring standing-wave ratio of broadcast transmitter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977392A (en) * | 2010-10-26 | 2011-02-16 | 三维通信股份有限公司 | Method for detecting input and output power of digital repeater |
| CN102694566A (en) * | 2011-03-22 | 2012-09-26 | 富士通半导体股份有限公司 | System and method for tuning an antenna in a wireless communication device |
| US8644776B1 (en) * | 2008-08-25 | 2014-02-04 | Peregrine Semiconductor Corporation | Systems and methods for providing improved power performance in wireless communication systems |
| CN206542413U (en) * | 2016-12-21 | 2017-10-03 | 广西广播电视技术中心 | A kind of power meter of the long-range monitoring and alarming function of band |
| CN111181665A (en) * | 2018-11-09 | 2020-05-19 | 国家新闻出版广电总局广播科学研究院 | Method and system for testing performance of amplitude modulation broadcast |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050124304A1 (en) * | 2003-12-09 | 2005-06-09 | Oded Bendov | TV & FM transmitting system early warning monitoring |
-
2020
- 2020-11-30 CN CN202011366602.0A patent/CN112152733B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8644776B1 (en) * | 2008-08-25 | 2014-02-04 | Peregrine Semiconductor Corporation | Systems and methods for providing improved power performance in wireless communication systems |
| CN101977392A (en) * | 2010-10-26 | 2011-02-16 | 三维通信股份有限公司 | Method for detecting input and output power of digital repeater |
| CN102694566A (en) * | 2011-03-22 | 2012-09-26 | 富士通半导体股份有限公司 | System and method for tuning an antenna in a wireless communication device |
| CN206542413U (en) * | 2016-12-21 | 2017-10-03 | 广西广播电视技术中心 | A kind of power meter of the long-range monitoring and alarming function of band |
| CN111181665A (en) * | 2018-11-09 | 2020-05-19 | 国家新闻出版广电总局广播科学研究院 | Method and system for testing performance of amplitude modulation broadcast |
Non-Patent Citations (1)
| Title |
|---|
| 调幅广播发射机质量监测系统的分析与应用;任查学;《广播电视信息》;20151231(第277期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112152733A (en) | 2020-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111769886B (en) | General radar state data acquisition equipment and method | |
| US8314604B2 (en) | Apparatus and method for spurious-free signal range measurement for RF circuitry | |
| US20120309322A1 (en) | Standing Wave Detection Method, Standing Wave Detection Apparatus and Base Station | |
| CN101726664B (en) | Method, device and system for measuring signal phase difference | |
| CN104601258B (en) | A kind of Vehicular communication system is with car multimachine mutual interference method of testing | |
| CN103837767B (en) | A kind of method utilizing arrow net that reciprocal mixing device is carried out characteristic present | |
| CN112152733B (en) | System and method for accurately measuring output power of AM broadcast transmitter | |
| CN102868402A (en) | Test method for testing main performance indices of analog-to-digital converter (ADC) | |
| CN110988490A (en) | Power filter differential loss time domain measurement system and method | |
| CN206432996U (en) | Radio-frequency performance of wireless terminal test system | |
| CN109451509B (en) | NB-IOT base station signal measuring equipment and its measuring processing method | |
| CN102820937A (en) | Measuring method of received signal strength indicator (RSSI), measuring device of RSSI and receiver | |
| CN102749513B (en) | A kind of method utilizing vector network analyzer to realize crosstalk spectrum measurement | |
| CN106533584A (en) | Forward passive intermodulation test system | |
| CN107247696B (en) | Method for calling S2P file to acquire loss compensation data in noise coefficient analyzer | |
| CN116520095B (en) | Fault location method, system and computer readable storage medium | |
| CN103472338A (en) | Magnetron test system and method | |
| CN108847902A (en) | A kind of measuring circuit and measurement method of noise power | |
| US20170294960A1 (en) | Systems and methods for locating a single reflection on a transmission line | |
| CN214224154U (en) | Range finding simulator calibrating device based on PXI structure | |
| CN110429997A (en) | A kind of wireless performance test method and system | |
| CN113644997B (en) | Electromagnetic environment detection method, device and system | |
| CN107831478A (en) | A kind of automatic marking method and system of wind profile radar echo-signal | |
| CN102519385B (en) | Fast demodulation device of optical fiber invasion signals on basis of Brillouin scattering | |
| CN105445549A (en) | Weak electromagnetic signal frequency spectrum measuring method |
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 |