CN102944780A - Testing method for shielding effectiveness of small-size shielding cavity - Google Patents
Testing method for shielding effectiveness of small-size shielding cavity Download PDFInfo
- Publication number
- CN102944780A CN102944780A CN2012104376787A CN201210437678A CN102944780A CN 102944780 A CN102944780 A CN 102944780A CN 2012104376787 A CN2012104376787 A CN 2012104376787A CN 201210437678 A CN201210437678 A CN 201210437678A CN 102944780 A CN102944780 A CN 102944780A
- Authority
- CN
- China
- Prior art keywords
- antenna
- cavity
- shield effectiveness
- shielding
- small
- 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
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a testing method for the shielding effectiveness of a small-size shielding cavity. The testing method is characterized in that a shielding anechoic chamber and a shielding chamber are two cavities formed by separation through a metal wall plate; a wave absorbing material is arranged on the wall surface of the shielding anechoic chamber; the shielding anechoic chamber and the shielding chamber are independently grounded; a receiver is arranged in the shielding chamber; other devices are arranged in the shielding anechoic chamber; a bidirectional radio frequency connector is arranged on the wall surface of the metal wall plate; a near-field test antenna is arranged in the shielding anechoic chamber and is sequentially conducted with the bidirectional radio frequency connector and the receiver which are arranged on the wall surface of the metal wall plate through a coaxial cable; a transmitting antenna is sequentially conducted with a pre-amplifier and a signal source through a coaxial cable; the transmitting antenna, the pre-amplifier and the signal source are arranged in the shielding chamber; the center of the transmitting antenna corresponds to the center of the near-field test antenna; and the testing method is realized by three steps of measuring a direct-connection receiving value and a radio frequency leakage quantity and calculating the shielding effectiveness. The testing method is simple and accurate.
Description
Technical field
The present invention relates to Electronic Testing and shield effectiveness technical field of measurement and test, is a kind of method of testing of small-sized shielding cavity shield effectiveness.
Background technology
In recent years, in the electromagnetic compatibility field, anti-electromagnetic interference performance for product requires more and more higher, because the electromagnetic interference (EMI) emissions frequency range of each electronic product is more and more wider, and low-frequency range is particularly intensive, and this is so that the anti-electromagnetic interference capability of product requires more and more strictlyer, and the ability that determines its anti-electromagnetic interference (EMI) in space often depends on the shield effectiveness of its equipment cavity self, because modern electronic equipment develops towards miniaturization, thereby so that equipment volume reduce gradually; And the shield effectiveness of a cavity of need checking, then must be in a transmission antennas transmit signal, so that putting into this inside cavity, a receiving antenna carries out signal reception test, because employed screen effect test antenna mostly is narrow-band antenna in this field at present, and volume is large, when the shield effectiveness of test wisp, often antenna can not be placed on inside cavity and carry out shield effectiveness reception test, this just so that himself shield effectiveness of the little cavity of volume often can't be verified, therefore verifies the shield effectiveness of small-sized cavity in the urgent need to a kind of method of testing of small-sized shielding cavity shield effectiveness.
Summary of the invention
The method of testing that the purpose of this invention is to provide a kind of small-sized shielding cavity shield effectiveness is applicable to the shield effectiveness test of small-sized cavity, rack, shielding camera bellows and large-scale screened room, shielding shelter.
Technical scheme of the present invention is a kind of method of testing of small-sized shielding cavity shield effectiveness, his equipment comprises near-field test antenna, bi-directional RF connector, emitting antenna, prime amplifier, signal source, receiving instrument, coaxial cable and shielded anechoic chamber and screened room at least, it is characterized in that: shielded anechoic chamber and screened room are two cavitys that are divided into by metal wallboard, absorbing material shielded anechoic chamber and screened room are set on the wall of shielded anechoic chamber all connect separately the earth; Receiving instrument is arranged in the screened room, and all the other equipment are arranged in the shielded anechoic chamber, and the bi-directional RF connector is arranged on the metal wallboard wall; The near-field test antenna is arranged in the shielded anechoic chamber, and the near-field test antenna is by bi-directional RF connector and receiving instrument conducting on the coaxial cable successively metal wallboard wall; Emitting antenna by coaxial cable successively with prime amplifier and signal source conducting, they are arranged in the screened room, and the center of emitting antenna is to the center of near-field test antenna; The method of testing of this small-sized shielding cavity shield effectiveness is carried out according to following step:
Step 1 is surveyed straight-through reception value; Signal source is sent signal, and incoming signal is behind prime amplifier, by transmission antennas transmit, again by the near-field test antenna reception, and by the bi-directional RF connector signal being passed to receiving instrument, receiving instrument obtains the data of antenna horizontal polarization and vertical polarization, is straight-through reception value;
After setting tested cavity, signal source is sent signal, incoming signal is behind prime amplifier, by transmission antennas transmit, after incident wave passes the receiving plane of tested cavity, again by the near-field test antenna reception, and by two bi-directional RF connectors signal is passed to receiving instrument, receiving instrument obtains the data of this moment antenna horizontal polarization and vertical polarization, is the radio-frequency leakage amount of tested cavity receiving plane;
Described bi-directional RF connector is the bidirectional metal shield electric-connector, and there is metal flange the position, intermediate portion, is fixedly connected with by the wall of ring flange with metal wallboard and tested cavity.
Described near-field test antenna is that diameter is 3 centimetres to 12 centimetres annulus feed body, is that its essence is receiving antenna, for the magnetic field frequency range of 9KHz to 30MHz by the inner wire of RF cable and an end isocentric circular arc of external loop layer overlap joint welding formation; Emitting antenna is the toroidal magnetic field antenna, for the magnetic field frequency range of 9KHz to 30MHz.
Described near-field test antenna and emitting antenna can also be dipole antennas, for electric field frequency range or the microwave horn antenna of 100MHz to 1GHz, for the plane wave frequency range of 1GHz to 40GHz.
It is 9KHz to 40GHz that the signal power of described prime amplifier is amplified frequency range.
Described signal source is function signal generator, modulation signal generator or broadband signal source.
Described receiving instrument is receiver or frequency spectrograph.
Described coaxial cable is the coaxial cable that satisfies 9KHz to 40GHz frequency range.
Described shielded anechoic chamber and screened room are semi-anechoic chambers, and they all connect separately the earth.
Described absorbing material is the packaging splitter shape absorber of isocyanurate foam type, nonwoven fabrics nonflammable or silicate board metal film.
Characteristics of the present invention are the conversions by shielding syndeton and antenna, but the shield effectiveness of the Electric and magnetic fields frequency range of testing small volumes cavity, have advantages of that precision and dynamic range are high, versatility good simultaneously.
Description of drawings
The present invention is further illustrated below in conjunction with embodiment:
Fig. 1 is the straight-through test schematic diagram of 9KHz to 30MHz magnetic field frequency range;
Fig. 2 is that the shield effectiveness of 9KHz to 30MHz magnetic field frequency range detects schematic layout pattern;
Fig. 3 is the straight-through test schematic diagram of 100MHz to 1GHz electric field frequency range;
Fig. 4 is that the shield effectiveness of 100MHz to 1GHz electric field frequency range detects schematic layout pattern;
Fig. 5 is the straight-through test schematic diagram of 1GHz to 40GHz plane wave frequency range;
Fig. 6 is that the shield effectiveness of 1GHz to 40GHz plane wave frequency range detects schematic layout pattern.
Among the figure: 1, near-field test antenna; 2, bi-directional RF connector; 3, emitting antenna; 4, dipole antenna; 5, microwave horn antenna; 6, prime amplifier; 7, signal source; 8, receiving instrument; 9, coaxial cable; 10, shielded anechoic chamber; 11, screened room; 12, absorbing material; 13, metal wallboard; 14, tested cavity; D, emitting antenna are apart from the distance of measured point; D, receiving antenna are apart from the distance of measured point.
Embodiment
Embodiment 1
As depicted in figs. 1 and 2, semi-anechoic chamber is a kind of isolation environment that adopts for fear of impact test authenticity in order to prevent incoming signal and directly receiver to be disturbed and arranging.
Be provided with bi-directional RF connector 2 on the metal wallboard 13, in shielded anechoic chamber 10 and screened room 11, receiving instrument 8 places separately screened room 11 inside respectively at the two ends of bi-directional RF connector 2.
Bi-directional RF connector 2 is bidirectional metal shield electric-connectors, and there is metal flange the position, intermediate portion, and is fixing by ring flange and metal wallboard 15.
Receiving instrument 8 is receiver or frequency spectrograph.
Near-field test antenna 1 places in the shielded anechoic chamber 10, by an end conducting, the other end of bi-directional RF connector 2 and receiving instrument 8 conductings of the bi-directional RF connector 2 of setting on coaxial cable 9 and the metal wallboard 13.
Near-field test antenna 1 is that diameter is 3 centimetres to 12 centimetres annulus feed body, is that its essence is receiving antenna, for the magnetic field frequency range of 9KHz to 30MHz by the inner wire of RF cable and an end isocentric circular arc of external loop layer overlap joint welding formation.
Emitting antenna 3 and prime amplifier 6 and signal source 7 are by coaxial cable 9 conductings, and they also place in the shielded anechoic chamber 10, and the centrally aligned of the center of emitting antenna 3 and near-field test antenna 1.
The method of testing of this small-sized shielding cavity shield effectiveness is carried out according to following step:
Step 1 is surveyed straight-through reception value; Signal source 7 is sent signal, and incoming signal is behind prime amplifier 6, by emitting antenna 3 emissions, received by near-field test antenna 1 again, and by bi-directional RF connector 2 signal being passed to receiving instrument 8, receiving instrument 8 obtains the data of antenna horizontal polarization and vertical polarization, is straight-through reception value;
After setting tested cavity, signal source 7 is sent signal, incoming signal is behind prime amplifier 6, by emitting antenna 3 emissions, after incident wave passes the receiving plane of tested cavity 14, received by near-field test antenna 1 again, and by two bi-directional RF connectors 2 signal is passed to receiving instrument 8, receiving instrument 8 obtains the data of this moment antenna horizontal polarization and vertical polarization, is the radio-frequency leakage amount of tested cavity 14 receiving planes;
The method of testing of this small-sized shielding cavity shield effectiveness is by the conversion of shielding syndeton and antenna, but the shield effectiveness of the Electric and magnetic fields frequency range of testing small volumes cavity, has advantages of that precision and dynamic range are high, versatility good simultaneously.
As shown in Figure 3 and Figure 4, equipment setting and the testing procedure of the present embodiment and embodiment 1 are identical, different is that near-field test antenna 1 and emitting antenna 3 adopt dipole antenna 4, can carry out for the electric field frequency range of 100MHz to 1GHz the detection of shield effectiveness.
As shown in Figure 5 and Figure 6, equipment setting and the testing procedure of embodiment and embodiment 1 are identical, and different is that near-field test antenna 1 and emitting antenna 3 adopt microwave horn antenna 5, can carry out for the plane wave frequency range of 1GHz to 40GHz the detection of shield effectiveness.
The parts that the present embodiment is not described in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not one by one narration.
Claims (10)
1. the method for testing of a small-sized shielding cavity shield effectiveness, his equipment comprises near-field test antenna (1) at least, bi-directional RF connector (2), emitting antenna (3), prime amplifier (6), signal source (7), receiving instrument (8), coaxial cable (9) and shielded anechoic chamber (10) and screened room (11), it is characterized in that: shielded anechoic chamber (10) and screened room (11) are two cavitys that are divided into by metal wallboard (13), absorbing material (12) shielded anechoic chamber (10) are set on the wall of shielded anechoic chamber (10) and screened room (11) all connects separately the earth; Receiving instrument (8) is arranged in the screened room (11), and all the other equipment are arranged in the shielded anechoic chamber (10), and bi-directional RF connector (2) is arranged on metal wallboard (13) wall; Near-field test antenna (1) is arranged in the shielded anechoic chamber (10), and near-field test antenna (1) is by bi-directional RF connector (2) and receiving instrument (8) conducting on the coaxial cable (9) successively metal wallboard (15) wall; Emitting antenna (3) by coaxial cable (9) successively with prime amplifier (6) and signal source (7) conducting, they are arranged in the screened room (10), and the center of emitting antenna (3) is to the center of near-field test antenna (1); The method of testing of this small-sized shielding cavity shield effectiveness is carried out according to following step:
Step 1 is surveyed straight-through reception value; Signal source (7) is sent signal, incoming signal is behind prime amplifier (6), launched by emitting antenna (3), received by near-field test antenna (1) again, and by bi-directional RF connector (2) signal is passed to receiving instrument (8), receiving instrument (8) obtains the data of antenna horizontal polarization and vertical polarization, is straight-through reception value;
Step 2 is surveyed the radio-frequency leakage amount; Near field test antenna (1) is arranged on the insulated antenna pallet, and is placed on tested cavity (14) inside, the tested cavity of its centrally aligned (14) receiving plane, near-field test antenna (1) is d apart from tested cavity (14) receiving plane; On tested cavity (14) wall bi-directional RF connector (2) is installed simultaneously, coaxial cable (9) is with the bi-directional RF connector (2) near field test antenna (1) and tested cavity (14) face, bi-directional RF connector (2) and the successively conducting of receiving instrument (8) on metal wallboard (13) face; Tested cavity (14) is in shielded anechoic chamber (10), and emitting antenna (3) is outside tested cavity (14), and the center of emitting antenna (3) is to tested cavity (14) receiving plane, and emitting antenna (3) is D with the distance of tested cavity (14) receiving plane;
After setting tested cavity, signal source (7) is sent signal, incoming signal is behind prime amplifier (6), launched by emitting antenna (3), after incident wave passes the receiving plane of tested cavity (14), received by near-field test antenna (1) again, and by two bi-directional RF connectors (2) signal is passed to receiving instrument (8), receiving instrument 8 obtains the data of this moment antenna horizontal polarization and vertical polarization, is the radio-frequency leakage amount of tested cavity (14) receiving plane;
Step 3 is calculated shield effectiveness; Use the straight-through reception value that obtains in the step 1 to deduct the radio-frequency leakage amount that obtains in the step 2, draw the shield effectiveness of tested cavity (14) receiving plane after the calculating.
2. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: described bi-directional RF connector (2) is the bidirectional metal shield electric-connector, there is metal flange the position, intermediate portion, is fixedly connected with the wall of metal wallboard (15) with tested cavity (17) by ring flange.
3. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: described near-field test antenna (1) is that diameter is 3 centimetres to 12 centimetres annulus feed body, by the inner wire of RF cable and an end isocentric circular arc of external loop layer overlap joint welding formation, its essence is receiving antenna, for the magnetic field frequency range of 9KHz to 30MHz; Emitting antenna (3) is the toroidal magnetic field antenna, for the magnetic field frequency range of 9KHz to 30MHz.
4. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: described near-field test antenna (1) and emitting antenna (3) can also be dipole antenna (4), for electric field frequency range or the microwave horn antenna 5 of 100MHz to 1GHz, for the plane wave frequency range of 1GHz to 40GHz.
5. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: it is 9KHz to 40GHz that the signal power of described prime amplifier (6) is amplified frequency range.
6. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: described signal source (7) is function signal generator, modulation signal generator or broadband signal source.
7. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: described receiving instrument (8) is receiver or frequency spectrograph.
8. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: described coaxial cable (9) is the coaxial cable that satisfies 9KHz to 40GHz frequency range.
9. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: described shielded anechoic chamber (10) and screened room (11) are semi-anechoic chambers, and they all connect separately the earth.
10. the method for testing of a kind of small-sized shielding cavity shield effectiveness described in according to claim 1, it is characterized in that: described absorbing material (12) is the packaging splitter shape absorber of isocyanurate foam type, nonwoven fabrics nonflammable or silicate board metal film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104376787A CN102944780A (en) | 2012-11-06 | 2012-11-06 | Testing method for shielding effectiveness of small-size shielding cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104376787A CN102944780A (en) | 2012-11-06 | 2012-11-06 | Testing method for shielding effectiveness of small-size shielding cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102944780A true CN102944780A (en) | 2013-02-27 |
Family
ID=47727740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104376787A Pending CN102944780A (en) | 2012-11-06 | 2012-11-06 | Testing method for shielding effectiveness of small-size shielding cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102944780A (en) |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760445A (en) * | 2014-01-24 | 2014-04-30 | 中国人民解放军军械工程学院 | Method for testing shielding effectiveness of irregular structure cavity based on reverberation room |
| CN103837778A (en) * | 2014-03-19 | 2014-06-04 | 索尔思光电（成都）有限公司 | Test circuit, system and method for testing shielding performance of shell of optical module |
| CN103983937A (en) * | 2014-06-06 | 2014-08-13 | 广州广电计量检测股份有限公司 | Signal detection system applied to anechoic chamber |
| CN104219010A (en) * | 2014-09-19 | 2014-12-17 | 上海市计量测试技术研究院 | Anechoic chamber satellite signal coverage device |
| CN104330658A (en) * | 2014-10-14 | 2015-02-04 | 华北电力大学 | Device and method for testing shielding effectiveness of material in low-frequency electric field |
| CN104569667A (en) * | 2014-12-27 | 2015-04-29 | 中国西电电气股份有限公司 | Calibration device and method for reference field of intelligent module shielding case |
| CN105116249A (en) * | 2015-08-06 | 2015-12-02 | 西安电子科技大学 | Broadband shielding effectiveness test device of small shielding chassis and method |
| CN105578521A (en) * | 2014-10-14 | 2016-05-11 | 中国科学院上海高等研究院 | Performance testing system for wireless signal coverage range of enclosed space and method thereof |
| CN105577295A (en) * | 2014-10-14 | 2016-05-11 | 中国科学院上海高等研究院 | Testing system and method for wireless signal attenuation performance in enclosed space |
| CN105738923A (en) * | 2016-02-16 | 2016-07-06 | 铁道第三勘察设计院集团有限公司 | Measurement type global navigation satellite system (GNSS) receiver indoor electrification examination method |
| CN105785166A (en) * | 2016-03-02 | 2016-07-20 | 北京市劳动保护科学研究所 | Transmission device and method for test signals in shielding body, shielding body and test device |
| CN105827358A (en) * | 2016-06-03 | 2016-08-03 | 广州市诚臻电子科技有限公司 | Device and system for shielding effectiveness detection |
| CN107607922A (en) * | 2017-10-17 | 2018-01-19 | 西安飞机工业（集团）有限责任公司 | A kind of method of testing and screening arrangement for aircraft weather radar radiance |
| CN107843793A (en) * | 2017-11-24 | 2018-03-27 | 广州力赛计量检测有限公司 | A kind of testing jig, shield effectiveness test system and its method of testing |
| CN108107290A (en) * | 2017-12-04 | 2018-06-01 | 北京控制与电子技术研究所 | A kind of small-scale structure body shield effectiveness test method based on transfger impedance |
| CN108120880A (en) * | 2017-12-22 | 2018-06-05 | 广州广电计量检测无锡有限公司 | Transmitting radar antenna conducted emission and susceptibility test platform and its test method |
| CN108776272A (en) * | 2018-05-28 | 2018-11-09 | 煤炭科学技术研究院有限公司 | A kind of test system of frequency conversion equipment Electro Magnetic Compatibility |
| CN109212133A (en) * | 2018-08-27 | 2019-01-15 | 广东柏兹电子科技有限公司 | A kind of automation multiple physical field near-field scan platform and test method |
| CN109633513A (en) * | 2018-12-20 | 2019-04-16 | 北京无线电计量测试研究所 | A kind of determination method and system of installation electromagnetical radiation test darkroom performance |
| CN111239520A (en) * | 2020-02-07 | 2020-06-05 | 吉林大学 | Method for evaluating high-power microwave protection efficiency of protection circuit module |
| CN111398776A (en) * | 2020-02-24 | 2020-07-10 | 浙江诺益科技有限公司 | Integrated circuit electromagnetic interference analyzer |
| WO2020220878A1 (en) * | 2019-04-29 | 2020-11-05 | 深圳市通用测试系统有限公司 | Multiple-antenna wireless device radio interface testing apparatus |
| CN112461864A (en) * | 2020-10-16 | 2021-03-09 | 合肥联宝信息技术有限公司 | Microwave frequency signal penetration rate measuring system |
| CN113125859A (en) * | 2021-03-10 | 2021-07-16 | 青岛歌尔智能传感器有限公司 | Packaging structure for testing shielding effectiveness and shielding effectiveness testing method |
| CN113419114A (en) * | 2021-05-13 | 2021-09-21 | 北京航空航天大学 | Miniaturized broadband electromagnetic shielding testing device and testing method |
| CN113514708A (en) * | 2021-04-23 | 2021-10-19 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Actual measurement system and measurement method for integral HEMP environment of large underground engineering |
| CN114024807A (en) * | 2021-11-05 | 2022-02-08 | 江西洪都航空工业集团有限责任公司 | Near-field co-channel interference cancellation mechanism and cancellation method |
| CN114019251A (en) * | 2021-11-03 | 2022-02-08 | 株洲菲斯罗克光电科技股份有限公司 | Magnetic shielding detector |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936610A (en) * | 2006-10-17 | 2007-03-28 | 中原工学院 | Method for detecting shield effect of electromagnetic-radiation-preventive clothing |
| CN201196667Y (en) * | 2008-05-20 | 2009-02-18 | 常州雷宁电磁屏蔽设备有限公司 | Shielding performance detection apparatus of shield room |
| CN101424718A (en) * | 2007-10-30 | 2009-05-06 | 上海翰纳森制衣有限公司 | Method for shielding capacity test of shielding dress for preventing electromagnetic radiation |
| CN201387454Y (en) * | 2008-12-19 | 2010-01-20 | 中国航空综合技术研究所 | Electromagnetic shielding effectiveness tester for conductive gasket |
| CN101662078A (en) * | 2009-07-30 | 2010-03-03 | 北京大泽科技有限公司 | Small shielding body electromagnetic shielding performance testing device, system and method therefor |
| CN201535803U (en) * | 2009-07-30 | 2010-07-28 | 北京大泽科技有限公司 | Electromagnetic shielding efficiency test device and system of large shielding body |
| CN202330577U (en) * | 2011-11-02 | 2012-07-11 | 成都芯通科技股份有限公司 | Device for measuring shielding performance of dispensing shell |
| JP2012145456A (en) * | 2011-01-12 | 2012-08-02 | Seiwa Electric Mfg Co Ltd | Electromagnetic wave shield performance evaluation method |
-
2012
- 2012-11-06 CN CN2012104376787A patent/CN102944780A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936610A (en) * | 2006-10-17 | 2007-03-28 | 中原工学院 | Method for detecting shield effect of electromagnetic-radiation-preventive clothing |
| CN101424718A (en) * | 2007-10-30 | 2009-05-06 | 上海翰纳森制衣有限公司 | Method for shielding capacity test of shielding dress for preventing electromagnetic radiation |
| CN201196667Y (en) * | 2008-05-20 | 2009-02-18 | 常州雷宁电磁屏蔽设备有限公司 | Shielding performance detection apparatus of shield room |
| CN201387454Y (en) * | 2008-12-19 | 2010-01-20 | 中国航空综合技术研究所 | Electromagnetic shielding effectiveness tester for conductive gasket |
| CN101662078A (en) * | 2009-07-30 | 2010-03-03 | 北京大泽科技有限公司 | Small shielding body electromagnetic shielding performance testing device, system and method therefor |
| CN201535803U (en) * | 2009-07-30 | 2010-07-28 | 北京大泽科技有限公司 | Electromagnetic shielding efficiency test device and system of large shielding body |
| JP2012145456A (en) * | 2011-01-12 | 2012-08-02 | Seiwa Electric Mfg Co Ltd | Electromagnetic wave shield performance evaluation method |
| CN202330577U (en) * | 2011-11-02 | 2012-07-11 | 成都芯通科技股份有限公司 | Device for measuring shielding performance of dispensing shell |
Non-Patent Citations (5)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局 等: "《中华人民共和国国家标准GB/T12190-2006》", 6 March 2006 * |
| 程二威 等: "混响室环境下小屏蔽体屏蔽效能测试系统", 《河北大学学报（自然科学版）》 * |
| 程二威 等: "混响室环境下小屏蔽体屏蔽效能的试验研究", 《河北师范大学学报（自然科学版）》 * |
| 范丽思 等: "《电磁环境模拟技术》", 31 January 2012 * |
| 陈淑凤 等: "《电磁兼容试验技术》", 31 March 2001 * |
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760445B (en) * | 2014-01-24 | 2016-03-16 | 中国人民解放军军械工程学院 | A kind of irregular structure cavity shield effectiveness method of testing based on reverberation chamber |
| CN103760445A (en) * | 2014-01-24 | 2014-04-30 | 中国人民解放军军械工程学院 | Method for testing shielding effectiveness of irregular structure cavity based on reverberation room |
| CN103837778A (en) * | 2014-03-19 | 2014-06-04 | 索尔思光电（成都）有限公司 | Test circuit, system and method for testing shielding performance of shell of optical module |
| CN103983937A (en) * | 2014-06-06 | 2014-08-13 | 广州广电计量检测股份有限公司 | Signal detection system applied to anechoic chamber |
| CN104219010A (en) * | 2014-09-19 | 2014-12-17 | 上海市计量测试技术研究院 | Anechoic chamber satellite signal coverage device |
| CN105578521A (en) * | 2014-10-14 | 2016-05-11 | 中国科学院上海高等研究院 | Performance testing system for wireless signal coverage range of enclosed space and method thereof |
| CN105578521B (en) * | 2014-10-14 | 2019-01-04 | 中国科学院上海高等研究院 | A kind of enclosure space wireless signal coverage area Performance Test System and method |
| CN105577295A (en) * | 2014-10-14 | 2016-05-11 | 中国科学院上海高等研究院 | Testing system and method for wireless signal attenuation performance in enclosed space |
| CN105577295B (en) * | 2014-10-14 | 2018-03-02 | 中国科学院上海高等研究院 | A kind of closing space radio signal attenuation Performance Test System and method |
| CN104330658A (en) * | 2014-10-14 | 2015-02-04 | 华北电力大学 | Device and method for testing shielding effectiveness of material in low-frequency electric field |
| CN104569667A (en) * | 2014-12-27 | 2015-04-29 | 中国西电电气股份有限公司 | Calibration device and method for reference field of intelligent module shielding case |
| CN105116249A (en) * | 2015-08-06 | 2015-12-02 | 西安电子科技大学 | Broadband shielding effectiveness test device of small shielding chassis and method |
| CN105738923A (en) * | 2016-02-16 | 2016-07-06 | 铁道第三勘察设计院集团有限公司 | Measurement type global navigation satellite system (GNSS) receiver indoor electrification examination method |
| CN105785166A (en) * | 2016-03-02 | 2016-07-20 | 北京市劳动保护科学研究所 | Transmission device and method for test signals in shielding body, shielding body and test device |
| CN105827358A (en) * | 2016-06-03 | 2016-08-03 | 广州市诚臻电子科技有限公司 | Device and system for shielding effectiveness detection |
| CN105827358B (en) * | 2016-06-03 | 2019-02-26 | 广州市诚臻电子科技有限公司 | A kind of apparatus and system for shield effectiveness detection |
| CN107607922A (en) * | 2017-10-17 | 2018-01-19 | 西安飞机工业（集团）有限责任公司 | A kind of method of testing and screening arrangement for aircraft weather radar radiance |
| CN107843793A (en) * | 2017-11-24 | 2018-03-27 | 广州力赛计量检测有限公司 | A kind of testing jig, shield effectiveness test system and its method of testing |
| CN108107290A (en) * | 2017-12-04 | 2018-06-01 | 北京控制与电子技术研究所 | A kind of small-scale structure body shield effectiveness test method based on transfger impedance |
| CN108120880A (en) * | 2017-12-22 | 2018-06-05 | 广州广电计量检测无锡有限公司 | Transmitting radar antenna conducted emission and susceptibility test platform and its test method |
| CN108776272A (en) * | 2018-05-28 | 2018-11-09 | 煤炭科学技术研究院有限公司 | A kind of test system of frequency conversion equipment Electro Magnetic Compatibility |
| CN109212133A (en) * | 2018-08-27 | 2019-01-15 | 广东柏兹电子科技有限公司 | A kind of automation multiple physical field near-field scan platform and test method |
| CN109633513A (en) * | 2018-12-20 | 2019-04-16 | 北京无线电计量测试研究所 | A kind of determination method and system of installation electromagnetical radiation test darkroom performance |
| WO2020220878A1 (en) * | 2019-04-29 | 2020-11-05 | 深圳市通用测试系统有限公司 | Multiple-antenna wireless device radio interface testing apparatus |
| CN111239520A (en) * | 2020-02-07 | 2020-06-05 | 吉林大学 | Method for evaluating high-power microwave protection efficiency of protection circuit module |
| CN111398776A (en) * | 2020-02-24 | 2020-07-10 | 浙江诺益科技有限公司 | Integrated circuit electromagnetic interference analyzer |
| CN112461864A (en) * | 2020-10-16 | 2021-03-09 | 合肥联宝信息技术有限公司 | Microwave frequency signal penetration rate measuring system |
| CN113125859A (en) * | 2021-03-10 | 2021-07-16 | 青岛歌尔智能传感器有限公司 | Packaging structure for testing shielding effectiveness and shielding effectiveness testing method |
| CN113514708A (en) * | 2021-04-23 | 2021-10-19 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Actual measurement system and measurement method for integral HEMP environment of large underground engineering |
| CN113419114A (en) * | 2021-05-13 | 2021-09-21 | 北京航空航天大学 | Miniaturized broadband electromagnetic shielding testing device and testing method |
| CN114019251A (en) * | 2021-11-03 | 2022-02-08 | 株洲菲斯罗克光电科技股份有限公司 | Magnetic shielding detector |
| CN114024807A (en) * | 2021-11-05 | 2022-02-08 | 江西洪都航空工业集团有限责任公司 | Near-field co-channel interference cancellation mechanism and cancellation method |
| CN114024807B (en) * | 2021-11-05 | 2024-04-05 | 江西洪都航空工业集团有限责任公司 | Near-field co-channel interference cancellation mechanism and cancellation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102944780A (en) | Testing method for shielding effectiveness of small-size shielding cavity | |
| CN101662078B (en) | Small shielding body electromagnetic shielding performance testing device, system and method therefor | |
| US20140184241A1 (en) | Electromagnetic compatibility testing system | |
| CN105116249B (en) | A kind of the wide-band shield effectiveness test device and method of small-sized shielding case | |
| CN202916362U (en) | Device for testing the shielding effectiveness of small shielding cavity | |
| CN102576044A (en) | Antenna characterisation in a waveguide | |
| CN109752606A (en) | A kind of three coaxial test macros of radio frequency (RF) coaxial connector | |
| CN102944779A (en) | Shielding effectiveness test method of filtering and shielding integrated assembly | |
| KR101467171B1 (en) | Electromagnetic measurement system and signal processing apparatus | |
| CN111010247B (en) | Electromagnetic interference test system and method for radio system | |
| CN102944756B (en) | A kind of small-sized shield effectiveness test fixture | |
| CN101740850A (en) | High-gain broadband antenna based on the impedance matching principle and design method thereof | |
| CN102955086A (en) | Method for testing shielding effectiveness of waveguide transfer switch | |
| CN102955085A (en) | Radio frequency leakage test method | |
| CN216485390U (en) | Chip pin coupling voltage test system | |
| CN201536156U (en) | Electromagnetic shielding efficiency test device of small shielding body and radio-frequency antenna and dot frequency radiation source therein | |
| CN115356558A (en) | Device and method for testing shielding effectiveness of low-frequency and below-frequency bands | |
| CN205506954U (en) | 5m method anechoic chamber | |
| CN202916359U (en) | Radio frequency leakage test device | |
| CN102956952A (en) | Design method of miniaturized portable type near filed testing antenna | |
| WO2020174959A1 (en) | Communication device reception sensitivity measurement method, and communication device noise countermeasure effect evaluation method using same | |
| KR101584551B1 (en) | Reradiation antenna and wireless charger | |
| KR101001664B1 (en) | Antenna capable of receiving and trransmitting vertical and horizontal polarization | |
| Arsalane et al. | Implementation of a simulated model for the evaluation of electromagnetic disturbances in anechoic chamber | |
| CN101794932B (en) | Broadband high-gain magnetic field annular test antenna based on resonance principle and design method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130227 |
|
| RJ01 | Rejection of invention patent application after publication |