CN110557204A - Device and method for testing electromagnetic interference between wireless communication systems - Google Patents
Device and method for testing electromagnetic interference between wireless communication systems Download PDFInfo
- Publication number
- CN110557204A CN110557204A CN201910801978.0A CN201910801978A CN110557204A CN 110557204 A CN110557204 A CN 110557204A CN 201910801978 A CN201910801978 A CN 201910801978A CN 110557204 A CN110557204 A CN 110557204A
- Authority
- CN
- China
- Prior art keywords
- frequency modulation
- modulation transmitter
- frequency
- electromagnetic interference
- receiving
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
Abstract
the invention discloses a system and a method for testing electromagnetic interference between wireless communication systems, wherein the system comprises a first frequency modulation transmitter of a first frequency modulation transmitting communication system and a second frequency modulation transmitter of a second frequency modulation transmitting communication system which are arranged in an environment isolated from external electromagnetic interference, the distance between the first frequency modulation transmitter and the second frequency modulation transmitter is 0.2-0.6 m, a receiving antenna is arranged at a position with a vertical distance of 0.8-1.2 m from the midpoint of the first frequency modulation transmitter and the second frequency modulation transmitter, the receiving antenna is connected to a receiver through an attenuator, the receiver collects and records signals transmitted by the first frequency modulation transmitter and the second frequency modulation transmitter, by the invention, the electromagnetic interference condition between multi-frequency modulation transmitter systems can be tested, and the electromagnetic compatibility design and simulation work of the wireless radio frequency communication systems are assisted, and has higher reliability and safety.
Description
Technical Field
The invention relates to the technical field of electromagnetic interference testing, in particular to a device and a method for testing electromagnetic interference between wireless communication systems.
background
The wireless communication technology is a technology for propagating a signal through radio waves, and its principle is that information to be transmitted is loaded on radio waves through modulation and is transmitted through an antenna, and when the electromagnetic waves reach a receiving end through spatial propagation, the information is recovered through demodulation. In the field of information communication in recent years, the most rapidly developed and widely used wireless communication technology is used. The radio transmitter is an important component in a wireless communication system, strictly controls the research, production, import, sale and other links of radio transmitting equipment, and is vital to maintaining normal air radio wave order and reducing the generation of interference sources from the source. Fig. 1 is a block diagram of a conventional wireless communication system, in which a low-frequency signal is first modulated, i.e., loaded onto a high-frequency carrier, in a transmitting device. The frequency converter converts the signal into a frequency required by the transmitted electric wave, and the signal is radiated by the antenna after power amplification and carries out electromagnetic wave propagation through the own space. The radio wave is subject to fading in the process of propagation, the power of a received signal is very weak, and the original signal is recovered through signal amplification, frequency conversion and demodulation in receiving equipment, so that information is transmitted.
In a wireless communication system, the quality of wireless communication is seriously affected by electromagnetic interference existing between a transmitting device and a receiving device, interference among devices of the wireless communication system mainly comprises stray interference and intermodulation interference level blocking interference, and some useless signals received from an interference source cause the sensitivity of a receiver to be reduced, the signal-to-noise ratio of the system to be reduced and the service quality to be deteriorated. As the radio equipment is miniaturized, integrated and complicated, the problem of electromagnetic interference is becoming more serious. Therefore, it is necessary to study the electromagnetic interference between the radios to ensure the proper operation of the radios.
Chinese patent application publication No. CN104811992A discloses a micropower wireless communication networking relay mode testing device for short-distance power communication, which comprises: the at least two multifunctional electromagnetic wave cells are used for placing the tested micro-power wireless communication equipment to isolate the influence of the external environment; the measured micro-power wireless communication equipment arranged in one multifunctional electromagnetic wave small chamber is used as a main node, and the measured micro-power wireless communication equipment arranged in the rest at least one multifunctional electromagnetic wave small chamber is used as a slave node; the master node is connected with a first slave node through a variable attenuator, is connected with a second slave node through two variable attenuators, and is connected with a last slave node in the same way to form a communication network; the patent can provide a solution for better simulating a real on-site electromagnetic interference environment and the anti-interference capability of inspection equipment, but has the following defects:
1. The test scheme is more complicated and the used test equipment is more.
2. The electromagnetic interference existing in the wireless communication system is various, the test difficulty is high, and the uncertainty of the test result is high.
Disclosure of Invention
in order to overcome the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a device and a method for testing electromagnetic interference between wireless communication systems, so as to be able to test the electromagnetic interference between multiple tone transmitters, assist the electromagnetic compatibility design and simulation of the wireless radio frequency communication system, and have higher reliability and safety.
To achieve the above object, the present invention provides a system for testing electromagnetic interference between wireless communication systems, at least comprising: the device comprises a first frequency modulation transmitter of a first frequency modulation transmitting communication system and a second frequency modulation transmitter of a second frequency modulation transmitting communication system, wherein the first frequency modulation transmitter and the second frequency modulation transmitter are arranged in an environment isolated from external electromagnetic interference, the distance between the first frequency modulation transmitter and the second frequency modulation transmitter is 0.2-0.6 m, a receiving antenna is arranged at a position with the vertical distance of 0.8-1.2 m from the midpoint of the first frequency modulation transmitter and the midpoint of the second frequency modulation transmitter, the receiving antenna is connected to a receiver through an attenuator, and the receiver collects and records signals transmitted by the first frequency modulation transmitter and the second frequency modulation transmitter.
preferably, the test system is applied in a semi-anechoic chamber.
preferably, a plurality of working frequency points are respectively selected from the working frequency bands of the first frequency modulation transmitter and the second frequency modulation transmitter, and when the first frequency modulation transmitter and the second frequency modulation transmitter work at different working frequency points, the receiver respectively receives and records the signal intensity received by the receiving antenna and the frequency point of the received signal in the set receiving frequency band.
Preferably, the first and second fm transmitters are spaced apart by 0.5 m.
Preferably, the receiving antenna is disposed at a vertical distance of 1m from a midpoint of the first and second fm transmitters.
In order to achieve the above object, the present invention further provides a method for testing electromagnetic interference between wireless communication systems, comprising the following steps:
And step S1, arranging a first frequency modulation transmitter of a first frequency modulation transmitting communication system and a second frequency modulation transmitter of a second frequency modulation transmitting communication system in an environment isolated from external electromagnetic interference, ensuring that the first frequency modulation transmitter and the second frequency modulation transmitter can work normally, arranging a receiving antenna at a position with a vertical distance of 0.8-1.2 m from the midpoint of the first frequency modulation transmitter and the midpoint of the second frequency modulation transmitter, and connecting the receiving antenna to a receiver through an attenuator.
Step S2, respectively determining the working frequency band, the transmitting power and the communication distance of the first frequency modulation transmitter and the second frequency modulation transmitter, and respectively selecting a working frequency point;
Step S3, setting the receiving frequency band of the receiver, receiving the signals transmitted by the first frequency modulation transmitter and the second frequency modulation transmitter through the receiving antenna in the receiving frequency band, and recording the signal intensity received by the receiving antenna and the frequency point of the received signal in the receiving frequency band;
Step S4, selecting other working frequency points respectively in the working frequency bands of the first frequency modulation transmitter and the second frequency modulation transmitter, and when the first frequency modulation transmitter and the second frequency modulation transmitter work at different working frequency points, respectively receiving and recording the signal intensity received by the receiving antenna and the frequency point of the received signal in the receiving frequency band by using the receiver;
Step S5, analyzing the frequency point of the received signal and the strength of the signal, determining the electromagnetic interference phenomenon existing in the environment, and determining the frequency point and the interference value of the generated electromagnetic interference.
Preferably, in step S3, a corresponding receiving antenna is selected according to the set receiving frequency band.
preferably, the biconic antenna is selected for the 30MHz to 200MHz reception band.
Preferably, the horn antenna is selected for the 200MHz to 1GHz reception band.
Preferably, the test method is applied in a semi-anechoic chamber.
Compared with the prior art, the system and the method for testing the electromagnetic interference between the wireless communication systems have the advantages that the first frequency modulation transmitter of the frequency modulation transmitting communication system A and the second frequency modulation transmitter of the frequency modulation transmitting communication system B are arranged in the semi-anechoic chamber environment and can be ensured to work normally, the receiving antenna is arranged at the position with the vertical distance of 0.8-1.2 m from the midpoint of the first frequency modulation transmitter and the second frequency modulation transmitter, the receiving antenna is connected to the receiver through the attenuator, the receiver collects, records and analyzes the signals transmitted by the first frequency modulation transmitter and the second frequency modulation transmitter, the electromagnetic interference existing in the communication environment can be determined by analyzing the electromagnetic environment between the frequency modulation transmitting communication system A and the frequency modulation transmitting communication system B, and the electromagnetic interference environment based on the frequency modulation transmitting communication system can be better simulated, the electromagnetic compatibility of the radio device is improved.
drawings
FIG. 1 is a diagram of a system architecture for a system for testing electromagnetic interference between wireless communication systems according to the present invention;
FIG. 2 is a flowchart illustrating steps of a method for testing electromagnetic interference between wireless communication systems according to the present invention;
FIG. 3 is a block diagram of a system for testing electromagnetic interference between wireless communication systems according to an embodiment of the present invention.
Detailed Description
Other advantages and capabilities of the present invention will be readily apparent to those skilled in the art from the present disclosure by describing the embodiments of the present invention with specific embodiments thereof in conjunction with the accompanying drawings. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention.
Fig. 1 is a system architecture diagram of a testing system for electromagnetic interference between wireless communication systems according to the present invention. As shown in fig. 1, the present invention provides a system for testing electromagnetic interference between wireless communication systems, which at least includes: the first frequency modulation transmitter 101 of the first frequency modulation transmitting communication system and the second frequency modulation transmitter 102 of the second frequency modulation transmitting communication system are arranged in a semi-anechoic chamber environment, the semi-anechoic chamber is similar to a full anechoic chamber and is a six-sided box body which is designed by shielding, and electromagnetic wave absorbing materials are covered in the semi-anechoic chamber, the difference is that the semi-anechoic chamber uses a conductive floor and is not covered with the wave absorbing materials, the semi-anechoic chamber simulates an ideal open field condition, namely, a field has an infinite good conductive ground plane, in the semi-anechoic chamber, because the ground is not covered with the wave absorbing materials, a reflection path is generated, signals received by a receiving antenna are the sum of signals of a direct path and a reflection path, the semi-anechoic chamber environment is used for isolating electromagnetic interference in the external environment and eliminating other electromagnetic interference existing in the space, the first frequency modulation transmitter 101 and the second frequency modulation transmitter 102 are both connected with a transmitting antenna, the distance between the first frequency modulation transmitter 101 and the second frequency modulation transmitter 102 is 0.2 m-0.6 m, the receiving antenna 103 is arranged at a position with a vertical distance of 0.8-1.2 m from the midpoint of the first frequency modulation transmitter 101 and the second frequency modulation transmitter 102, the receiving antenna 103 is connected to the receiver 105 through the attenuator 104, and the receiver 105 collects and records signals transmitted by the first frequency modulation transmitter 101 and the second frequency modulation transmitter 102.
FIG. 2 is a flowchart illustrating steps of a method for testing electromagnetic interference between wireless communication systems according to the present invention. As shown in fig. 2, the method for testing electromagnetic interference between wireless communication systems of the present invention includes the following steps:
And step S1, arranging a first frequency modulation transmitter of a first frequency modulation transmitting communication system and a second frequency modulation transmitter of a second frequency modulation transmitting communication system in a semi-anechoic chamber environment, ensuring that the first frequency modulation transmitter and the second frequency modulation transmitter can work normally, wherein the distance between the first frequency modulation transmitter and the second frequency modulation transmitter is 0.2-0.6 m, arranging a receiving antenna at the position which is 0.8-1.2 m away from the midpoint of the first frequency modulation transmitter and the midpoint of the second frequency modulation transmitter, and connecting the receiving antenna to a receiver through an attenuator.
And S2, respectively determining the working frequency band, the transmitting power and the communication distance of the first frequency modulation transmitter and the second frequency modulation transmitter, and respectively selecting a working frequency point, specifically, determining the main working frequency band, the transmitting power and the communication distance of the first frequency modulation transmitter, setting the working frequency point as f A1, determining the main working frequency band, the transmitting power and the communication distance of the second frequency modulation transmitter, and setting the working frequency point as f B1.
And step S3, setting the receiving frequency band of the receiver, receiving the signals transmitted by the first frequency modulation transmitter and the second frequency modulation transmitter through the receiving antenna in the frequency band, and recording the signal intensity received by the receiving antenna and the frequency point of the received signal in the receiving frequency band. In a specific embodiment of the present invention, for the receiver, different receiving frequency bands may select different receiving antennas, for example, 30MHz to 200MHz selects a biconical antenna, and 200MHz to 1GHz selects a horn antenna, so in step S3, according to the set receiving frequency band, the receiver selects a corresponding receiving antenna, receives signals transmitted by the first fm transmitter and the second fm transmitter in the selected frequency band, and records the strength of the signal received by the receiving antenna in the receiving frequency band and the frequency point of the received signal.
Step S4, selecting other working frequency points in the working frequency bands of the first frequency modulation transmitter and the second frequency modulation transmitter, and when the first frequency modulation transmitter and the second frequency modulation transmitter work at different working frequency points, using the receiver to receive and record the signal intensity received by the receiving antenna in the receiving frequency band and the frequency point of the received signal, concretely, selecting other working frequency points f A2, f A3, f A4 and f A5 in the working frequency band of the first frequency modulation transmitter, selecting other working frequency points f B2, f B3, f B4 and f B5 in the working frequency band of the second frequency modulation transmitter, and when the first frequency modulation transmitter and the second frequency modulation transmitter work at different working frequency points, using the receiver to receive and record the signal intensity received by the receiving antenna in the receiving frequency band and the frequency point of the received signal.
step S5, analyzing the frequency point of the received signal and the intensity of the signal, determining the electromagnetic interference phenomenon existing in the environment, and determining the frequency point and the interference value of the generated electromagnetic interference to assist in researching the theoretical reason of the generated electromagnetic interference. For example, the received signal may be analyzed for electromagnetic interference to the device, and the type of interference generated, against the reception sensitivity and operating frequency band of other devices.
FIG. 3 is a block diagram of a system for testing electromagnetic interference between wireless communication systems according to an embodiment of the present invention. In a specific embodiment of the present invention, the system for testing electromagnetic interference between wireless communication systems is disposed in a half anechoic chamber, that is, a frequency modulation transmitter a and a frequency modulation transmitter B are disposed in the half anechoic chamber, a distance between the two transmitters a and B is 0.5m, and both the frequency modulation transmitter a and the frequency modulation transmitter B can work normally, a vertical distance between a receiving antenna and the frequency modulation transmitter a and the frequency modulation transmitter B is 1m, the receiving antenna is connected to a receiver through an attenuator, and the receiver records signals transmitted by the transmitters a and B, wherein the testing process is as follows:
Step 1, determining a main working frequency band, transmitting power and a communication distance of an FM frequency modulation transmitter A, and setting a working frequency point to be f A1;
Step 2, determining a main working frequency band, transmitting power and a communication distance of an FM frequency modulation transmitter B, and setting a working frequency point to be f B1;
Step 3, setting a receiving frequency band of the receiver, selecting a corresponding receiving antenna (for example, 30 MHz-200 MHz selects a biconical antenna, and 200 MHz-1 GHz selects a horn antenna), and receiving signals transmitted by an FM frequency modulation transmitter A and an FM frequency modulation transmitter B in the frequency band;
and 4, respectively selecting other working frequency points f A2, f A3, f A4 and f A5 in the working frequency band of the FM frequency modulation transmitter A, respectively selecting other working frequency points f B2, f B3, f B4 and f B5 in the working frequency band of the FM frequency modulation transmitter B, and receiving signals transmitted by the FM frequency modulation transmitter A and the FM frequency modulation transmitter B in the frequency band for testing when the transmitter A and the transmitter B work at different working frequency points, wherein the frequency points to be tested are shown in the table 1.
table 1 test frequency point table
And 5, recording the signal intensity received by the receiving antenna and the frequency point of the received signal in the receiving frequency band when the FM frequency modulation transmitter A and the FM frequency modulation transmitter B work at different working frequency points.
Step 6, analyzing the frequency point of the received signal and the intensity of the signal, proving the electromagnetic interference phenomenon existing in the environment, and determining the frequency point and the interference value of the generated electromagnetic interference; and can assist in researching the theoretical reason for generating the electromagnetic interference.
in summary, the present invention provides a system and a method for testing electromagnetic interference between wireless communication systems, wherein a first frequency modulation transmitter of a FM transmission communication system a and a second frequency modulation transmitter of a FM transmission communication system B are disposed in a semi-anechoic chamber environment, and both are ensured to work normally, a receiving antenna is disposed at a vertical distance of 0.8-1.2 m from a midpoint between the first frequency modulation transmitter and the second frequency modulation transmitter, the receiving antenna is connected to a receiver via an attenuator, the receiver collects, records and analyzes signals transmitted by the first frequency modulation transmitter and the second frequency modulation transmitter, and by analyzing an electromagnetic environment between the FM transmission communication system a and the FM transmission communication system B, the electromagnetic interference existing in the communication environment can be determined, thereby facilitating better simulation of an electromagnetic interference environment based on FM transmission communication systems, the invention can test the electromagnetic interference condition among multiple frequency modulation transmitter systems, can assist the electromagnetic compatibility design and simulation work of a wireless radio frequency communication system, and has higher reliability and safety.
the foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the scope of the invention should be determined from the following claims.
Claims (10)
1. a system for testing electromagnetic interference between wireless communication systems, comprising: the device comprises a first frequency modulation transmitter of a first frequency modulation transmitting communication system and a second frequency modulation transmitter of a second frequency modulation transmitting communication system, wherein the first frequency modulation transmitter and the second frequency modulation transmitter are arranged in an environment isolated from external electromagnetic interference, the distance between the first frequency modulation transmitter and the second frequency modulation transmitter is 0.2-0.6 m, a receiving antenna is arranged at a position with the vertical distance of 0.8-1.2 m from the midpoint of the first frequency modulation transmitter and the midpoint of the second frequency modulation transmitter, the receiving antenna is connected to a receiver through an attenuator, and the receiver collects and records signals transmitted by the first frequency modulation transmitter and the second frequency modulation transmitter.
2. The system for testing electromagnetic interference between wireless communication systems of claim 1, wherein: the test system is applied to a semi-anechoic chamber.
3. The system for testing electromagnetic interference between wireless communication systems of claim 1, wherein: and when the first frequency modulation transmitter and the second frequency modulation transmitter work at different working frequency points, the receiver respectively receives and records the signal strength received by the receiving antenna and the frequency point of the received signal in a set receiving frequency band.
4. The system for testing electromagnetic interference between wireless communication systems of claim 1, wherein: the distance between the first frequency modulation transmitter and the second frequency modulation transmitter is 0.5 m.
5. The system for testing electromagnetic interference between wireless communication systems of claim 1, wherein: the receiving antenna is arranged at a position which is 1m away from the middle point of the first frequency modulation transmitter and the second frequency modulation transmitter.
6. A method for testing electromagnetic interference between wireless communication systems comprises the following steps:
And step S1, arranging a first frequency modulation transmitter of a first frequency modulation transmitting communication system and a second frequency modulation transmitter of a second frequency modulation transmitting communication system in an environment isolated from external electromagnetic interference, ensuring that the first frequency modulation transmitter and the second frequency modulation transmitter can work normally, arranging a receiving antenna at a position with a vertical distance of 0.8-1.2 m from the midpoint of the first frequency modulation transmitter and the midpoint of the second frequency modulation transmitter, and connecting the receiving antenna to a receiver through an attenuator.
Step S2, respectively determining the working frequency band, the transmitting power and the communication distance of the first frequency modulation transmitter and the second frequency modulation transmitter, and respectively selecting a working frequency point;
Step S3, setting the receiving frequency band of the receiver, receiving the signals transmitted by the first frequency modulation transmitter and the second frequency modulation transmitter through the receiving antenna in the receiving frequency band, and recording the signal intensity received by the receiving antenna and the frequency point of the received signal in the receiving frequency band;
Step S4, selecting other working frequency points respectively in the working frequency bands of the first frequency modulation transmitter and the second frequency modulation transmitter, and when the first frequency modulation transmitter and the second frequency modulation transmitter work at different working frequency points, respectively receiving and recording the signal intensity received by the receiving antenna and the frequency point of the received signal in the receiving frequency band by using the receiver;
Step S5, analyzing the frequency point of the received signal and the strength of the signal, determining the electromagnetic interference phenomenon existing in the environment, and determining the frequency point and the interference value of the generated electromagnetic interference.
7. The method of claim 6, wherein the step of testing for electromagnetic interference between wireless communication systems comprises: in step S3, a corresponding receiving antenna is selected according to the set receiving frequency band.
8. the method of claim 7, wherein the step of testing for electromagnetic interference between wireless communication systems comprises: the biconical antenna is selected for the receiving frequency band of 30 MHz-200 MHz.
9. The method of claim 7, wherein the step of testing for electromagnetic interference between wireless communication systems comprises: and selecting a horn antenna for the receiving frequency band of 200 MHz-1 GHz.
10. The method of claim 6, wherein the step of testing for electromagnetic interference between wireless communication systems comprises: the test method is applied to a semi-anechoic chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801978.0A CN110557204A (en) | 2019-08-28 | 2019-08-28 | Device and method for testing electromagnetic interference between wireless communication systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801978.0A CN110557204A (en) | 2019-08-28 | 2019-08-28 | Device and method for testing electromagnetic interference between wireless communication systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110557204A true CN110557204A (en) | 2019-12-10 |
Family
ID=68737198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910801978.0A Pending CN110557204A (en) | 2019-08-28 | 2019-08-28 | Device and method for testing electromagnetic interference between wireless communication systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110557204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010247A (en) * | 2019-12-24 | 2020-04-14 | 广电计量检测（成都）有限公司 | Electromagnetic interference test system and method for radio system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707159A (en) * | 2012-06-11 | 2012-10-03 | 西安电子科技大学 | Radiated emission testing and calibrating method used in pre-compatible laboratory |
| CN103091576A (en) * | 2012-12-20 | 2013-05-08 | 北京航空航天大学 | Optimization method of radiated interference fault recovery using radiation test over-standard strategy |
| US20140355706A1 (en) * | 2013-05-31 | 2014-12-04 | Fujitsu Limited | Communication system, communications device, and antenna element arrangement method |
| CN104601258A (en) * | 2014-12-23 | 2015-05-06 | 中国北方车辆研究所 | Multi-machine mutual-interference test method for vehicle-mounted communication systems in the same car |
| CN105182370A (en) * | 2015-06-25 | 2015-12-23 | 工业和信息化部电信研究院 | Beidou equipment inter-module electromagnetic interference test method |
-
2019
- 2019-08-28 CN CN201910801978.0A patent/CN110557204A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707159A (en) * | 2012-06-11 | 2012-10-03 | 西安电子科技大学 | Radiated emission testing and calibrating method used in pre-compatible laboratory |
| CN103091576A (en) * | 2012-12-20 | 2013-05-08 | 北京航空航天大学 | Optimization method of radiated interference fault recovery using radiation test over-standard strategy |
| US20140355706A1 (en) * | 2013-05-31 | 2014-12-04 | Fujitsu Limited | Communication system, communications device, and antenna element arrangement method |
| CN104601258A (en) * | 2014-12-23 | 2015-05-06 | 中国北方车辆研究所 | Multi-machine mutual-interference test method for vehicle-mounted communication systems in the same car |
| CN105182370A (en) * | 2015-06-25 | 2015-12-23 | 工业和信息化部电信研究院 | Beidou equipment inter-module electromagnetic interference test method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010247A (en) * | 2019-12-24 | 2020-04-14 | 广电计量检测（成都）有限公司 | Electromagnetic interference test system and method for radio system |
| CN111010247B (en) * | 2019-12-24 | 2022-03-08 | 广电计量检测（成都）有限公司 | Electromagnetic interference test system and method for radio system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8805290B2 (en) | Method and system for spatial radio-frequency performance testing based on multiple-antenna system | |
| CN101667873B (en) | Method and system for testing radio-frequency performance of receiver in multi-antenna channel environment | |
| CN103856272A (en) | Method of testing wireless performance of MIMO wireless terminal | |
| CN110572191B (en) | Active antenna system transceiver near field test system and method | |
| CN103414526A (en) | Test system and test method of radio frequency identification index | |
| CN101166067B (en) | Testing device and method for radiation dispersion of CDMA mobile terminal | |
| CN101409590A (en) | Mobile phone radio frequency test method | |
| CN109788112B (en) | 5G terminal anti-interference degree test method, system and equipment | |
| WO2018014505A1 (en) | Probe calibration scheme for mimo testing system | |
| CN108988963A (en) | A kind of test method, transmitting equipment and test equipment and test macro | |
| EP3447506B1 (en) | Distributed system for radio frequency environment simulation | |
| CN110441744B (en) | Novel millimeter wave radar chip mass production test method and device | |
| CN203368490U (en) | Wireless radio frequency index test system | |
| CN114389720A (en) | 5G radio frequency testing device | |
| CN110514907B (en) | Air transmission measuring system for wireless communication device | |
| CN110557204A (en) | Device and method for testing electromagnetic interference between wireless communication systems | |
| CN111010247B (en) | Electromagnetic interference test system and method for radio system | |
| CN102955086A (en) | Method for testing shielding effectiveness of waveguide transfer switch | |
| CN107294630B (en) | Simulation test system of carrier wave-micropower dual-mode module | |
| EP1278317A1 (en) | Apparatus, method and program for communication test, and recorded medium on which that program has been recorded | |
| CN113484549B (en) | EVM measuring method suitable for OTA test | |
| WO2012108124A1 (en) | Reception sensitivity measuring method | |
| CN111147171A (en) | Testing device | |
| TW202014716A (en) | Mimo antenna measurement system | |
| CN216437202U (en) | Antenna isolation degree detection device of microminiature repeater |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191210 |