CN102403702B - HF/VHF frequency-range ultra wide band electromagnetic pulse protection module - Google Patents
HF/VHF frequency-range ultra wide band electromagnetic pulse protection module Download PDFInfo
- Publication number
- CN102403702B CN102403702B CN 201110373461 CN201110373461A CN102403702B CN 102403702 B CN102403702 B CN 102403702B CN 201110373461 CN201110373461 CN 201110373461 CN 201110373461 A CN201110373461 A CN 201110373461A CN 102403702 B CN102403702 B CN 102403702B
- Authority
- CN
- China
- Prior art keywords
- pass filter
- coaxial
- protection module
- coaxial cavity
- low pass
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides an HF/VHF frequency-range ultra wide band electromagnetic pulse protection module comprising a coaxial cavity low-pass filter, a gas discharge tube, a high-power TVS (Transient Voltage Suppressors) tube and a low-power TVS tube, wherein the two ends of the coaxial cavity low-pass filter are connected to coaxial ports through copper leads, respectively; the gas discharge tube and the high-power TVS tube are connected in series and then connected between the copper lead at one end of the coaxial cavity low-pass filter and a ground wire; and the low-power TVS tube is connected between the copper lead at the other end of the coaxial cavity low-pass filter and the ground wire. In the coaxial connection manner, the module can be conveniently mounted on a coaxial signal wire between an outdoor cable (including an antenna) and an indoor electronic device so as to discharge ultra wide band electromagnetic pulses coupled to the signal cable; therefore, the module is capable of protecting HF/VHF frequency-range sensitive devices from the damage of the pulse energy.
Description
Technical field
The invention belongs to strong electromagnetic pulse guard technology field, relate in particular to a kind of super-broadband electromagnetic impulse protection module with HF/VHF frequency range sensitive equipment of broad applicability, can be used for HF/VHF frequency range electronic equipment to the protection of super-broadband electromagnetic impulse with steep rising time (less than 1ns).
Background technology
Super-broadband electromagnetic impulse refers to rising time less than the strong electromagnetic pulse of 1ns, and because it has the rising time that is exceedingly fast, its spectrum energy may be distributed in 10MHz until in the scope of several GHz, even surpass 10GHz.Covered the working frequency range of present most of sensitive equipment, super-broadband electromagnetic impulse can produce than close coupling with the sensitive equipment antenna and enter radio-frequency front-end and equipment is produced damage.In addition because there is high fdrequency component in super-broadband electromagnetic impulse, its woven shield to the slit aperture on door and window gap (comprising woven wire), sensitive equipment cabinet and braided shield cable all has stronger penetration capacity, the strong electromagnetic pulse energy Ratios nuclear electromagnetic pulse that is coupled into sensitive equipment inside by the back door is stronger, to the interference of sensitive equipment, injure stronger.
Present existing strong electromagnetic pulse means of defence is less, existing strong electromagnetic pulse protection circuit is also that the nuclear electromagnetic pulse (rising time of Bell Laboratory waveform is 2.5ns, and American army mark waveform rising time is 5ns) with longer rising time is protection object in the world.For super-broadband electromagnetic impulse, because being exceedingly fast, its rising time (can reach 0.1ns, pulse duration is only 1ns), and the response time of at present the fastest suppression device TVS pipe is only 1ns, it is 0.1ns to rising time, and pulse duration is that the super-broadband electromagnetic impulse of 1ns does not have any protective action (most of electromagnetic pulse energy begins to enter late-class circuit by suppression device before response at suppression device) substantially.
Summary of the invention
The technical problem to be solved in the present invention is: the super-broadband electromagnetic impulse protection module that a kind of HF/VHF frequency range sensitive equipment is provided; can be installed on easily on the coaxial signal line between outside cable and indoor electronic equipment; release and be coupled to ultra broadband strong electromagnetic pulse on signal cable, play protection HF/VHF frequency range sensitive equipment and exempt from the effect that pulse energy is damaged.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: the super-broadband electromagnetic impulse protection module of HF/VHF frequency range sensitive equipment, it is characterized in that: it comprises coaxial cavity low pass filter, gas discharge tube, high-power TVS pipe and small-power TVS pipe, and the two ends of coaxial cavity low pass filter are connected with coaxial port by copper conductor respectively; Gas discharge tube be connected between the copper conductor and ground wire of coaxial cavity low pass filter one end after high-power TVS pipe is connected; Small-power TVS pipe is connected between the copper conductor and ground wire of the coaxial cavity low pass filter other end.
Press such scheme, described coaxial cavity low pass filter comprises metal shell, the multistage copper conductor is set in metal shell and is series at copper post between copper conductor, and copper post overcoat has the medium cylinder with the metal shell insulation.
Press such scheme, described copper column length is 5～20mm, and diameter is 10～20mm.
Press such scheme, the exponent number of described coaxial cavity low pass filter is 3～5 rank, and a copper post and one section copper conductor consist of 1 rank.
Press such scheme, described coaxial port characteristic impedance is 50 ohm.
Beneficial effect of the present invention is:
1, the employing filter circuit can obviously extend the rising time of super-broadband electromagnetic impulse, for rear class small-power TVS pipe provides enough response times; Due to high several magnitudes of cavity body filter Q value, adopt this scheme will realize lower squareness factor, improve the reflection with outer strong electromagnetic pulse energy under the prerequisite that does not affect inband signaling as far as possible.And its puncture voltage is very high, and the impact that is subject to environment (temperature, humidity) is less.
2, adopt gas discharge tube to connect as first order protection with high-power TVS pipe, the pulse duration that reduces strong electromagnetic pulse can obviously increase the instantaneous power ability to bear of rear class small-power TVS pipe; Gas discharge tube and high-power TVS pipe is connected in addition, reduces the additional capacitor of whole the first protection branch road in the afterflow that effectively suppresses gas discharge tube, reduces protection module to the impact of normal transmission channel.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the equivalent circuit diagram of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the combined type strong electromagnetic pulse integrated protection module for the ultra short wave communication frequency band of the present invention is further described in detail.
Fig. 1 is the structural representation of one embodiment of the invention, comprises coaxial cavity low pass filter, gas discharge tube, high-power TVS pipe and small-power TVS pipe.
The coaxial cavity low pass filter comprises metal shell, multistage copper conductor 3 is set in metal shell and is series at copper post 4 between copper conductor, and wherein the additional inductor of copper conductor consists of the inductance of whole coaxial cavity low pass filter; Copper post 4 overcoats have the medium cylinder 5 with the metal shell insulation, prevent that the copper post is connected with the metal shell of filter, and the face between copper post side and casing of filter-face coupling has consisted of the shunt capacitance of coaxial cavity low pass filter.Copper post and copper conductor are spaced high impedance and the Low ESR part that consists of filter, and 3～5 rank are generally elected on 1 rank of a copper post and one section copper conductor formation filter as, and the present embodiment is 4 rank.The copper column length is generally 5～20mm, and diameter is 10～20mm.The coaxial port characteristic impedance is 50 ohm.
Coaxial cavity low pass filter one end is connected with coaxle input end 1 by copper conductor, and is connected gas discharge tube 6 and high-power TVS pipe 7 circuit of connecting herein between copper conductor and ground wire; The coaxial cavity low pass filter other end is connected with coaxial output line 2 by copper conductor, and is connected small-power TVS pipe 8 between copper conductor and ground wire herein.
Fig. 2 is the equivalent circuit diagram of Fig. 1, and the two ends of coaxial cavity low pass filter 10 are connected with coaxial port by copper conductor respectively; Gas discharge tube 6 be connected between the copper conductor and ground wire of coaxial cavity low pass filter 10 1 ends after high-power TVS pipe 7 is connected; Small-power TVS pipe 8 is connected between the copper conductor and ground wire of the coaxial cavity low pass filter other end.
Protection module of the present invention is made of three grades of protection circuits, is respectively gas discharge tube in parallel+high-power TVS pipe branch road, series connection ultrashort wave frequency band cavity low pass filter, and the small-power TVS branch road in parallel of rear end.
For super-broadband electromagnetic impulse, the difficult point of its protection is that the response time of existing suppression device grows (the shortest 1ns), when suppression device begins to produce response, super-broadband electromagnetic impulse has passed protection module, and the present invention utilizes coaxial configuration low pass filter filters out super-broadband electromagnetic impulse high fdrequency component and then slows down the rising time of pulse.Simulation result shows; the low pass filter of 400MHz can be slowed to 3ns～4ns with the rising edge of the super-broadband electromagnetic impulse of 0.1ns～1ns rising time; the little additional capacitor TVS pipe that this moment, the response time in parallel was exceedingly fast after filter can be released to the energy of super-broadband electromagnetic impulse, reaches the purpose that the rear end sensitive equipment is protected.
Can to bear power little due to small-power TVS pipe, and the width of its transient pulse power bearing ability and pulse is inversely proportional to, for improving the pulse power ability to bear of TVS pipe, class large power suppression device before need to installing additional before above-mentioned combination of devices, be used for shortening the pulse duration of strong electromagnetic pulse, i.e. the gas discharge tube that the present invention adopts, high-power TVS pipe be the mode of series connection mutually.
Although gas discharge tube has very large through-current capability and response time faster, there is afterflow in it after returning to off-state from conducting state, and this afterflow is larger to normal signal; And adopt high-power TVS pipe to protect as the first order, although its response time is fast, and there is no the problem of afterflow, but its additional capacitor very large (power is larger, and additional capacitor is larger, can reach the nF magnitude), to obviously affect the high-frequency circuit impedance matching, normal signal will be produced considerable influence; Based on above analysis, gas discharge tube is connected and ground connection with high-power TVS pipe, consist of first circuit of protection module, this branch circuit integral capacitor is less than the additional capacitor (pF magnitude) of gas discharge tube; When this branch circuit switched to disconnection from conducting, the TVS pipe that disconnects had rapidly been blocked the afterflow path of gas discharge tube, mutually to make up shortcoming each other, can show good inhibition in addition.
In addition, generally speaking, super-broadband electromagnetic impulse all has certain repetition characteristic, and its repetition is tens of inferior more than even hundreds of times at per second.The super-broadband electromagnetic impulse of high repetition can significantly reduce the damage threshold of sensory system electronic circuit, and it will reduce the damage threshold of protection module filter circuit equally, makes its filter transmission characteristic degradation.Based on this, low-pass filtering of the present invention adopts " calabash bunch " coaxial filter, the said structure filter is owing to not using lumped parameter electric capacity, inductance (these devices performance under the strong electromagnetic pulse of high repetition impacts all significant change will occur), whole protection module its performance under the super-broadband electromagnetic impulse of high repetition impacts is more stable, can keep for a long time good transmission characteristic.
Claims (5)
1.HF/VHF the super-broadband electromagnetic impulse protection module of frequency range sensitive equipment, it is characterized in that: it comprises coaxial cavity low pass filter, gas discharge tube, high-power TVS pipe and small-power TVS pipe, and the two ends of coaxial cavity low pass filter are connected with coaxial port by copper conductor respectively; Gas discharge tube be connected between the copper conductor and ground wire of coaxial cavity low pass filter one end after high-power TVS pipe is connected; Small-power TVS pipe is connected between the copper conductor and ground wire of the coaxial cavity low pass filter other end.
2. super-broadband electromagnetic impulse protection module according to claim 1, it is characterized in that: described coaxial cavity low pass filter comprises metal shell, the multistage copper conductor is set in metal shell and is series at copper post between copper conductor, copper post overcoat has the medium cylinder with the metal shell insulation.
3. super-broadband electromagnetic impulse protection module according to claim 2, it is characterized in that: described copper column length is 5～20mm, diameter is 10～20mm.
4. super-broadband electromagnetic impulse protection module according to claim 2, it is characterized in that: the exponent number of described coaxial cavity low pass filter is 3～5 rank, a copper post and one section copper conductor consist of 1 rank.
5. the described super-broadband electromagnetic impulse protection module of any one according to claim 1 to 4, it is characterized in that: described coaxial port characteristic impedance is 50 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110373461 CN102403702B (en) | 2011-11-22 | 2011-11-22 | HF/VHF frequency-range ultra wide band electromagnetic pulse protection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110373461 CN102403702B (en) | 2011-11-22 | 2011-11-22 | HF/VHF frequency-range ultra wide band electromagnetic pulse protection module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102403702A CN102403702A (en) | 2012-04-04 |
| CN102403702B true CN102403702B (en) | 2013-11-06 |
Family
ID=45885621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110373461 Active CN102403702B (en) | 2011-11-22 | 2011-11-22 | HF/VHF frequency-range ultra wide band electromagnetic pulse protection module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102403702B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140144584A1 (en) * | 2012-11-29 | 2014-05-29 | Semes Co., Ltd. | Plasma antenna and apparatus for generating plasma having the same |
| CN104577276B (en) * | 2015-02-10 | 2017-05-10 | 深圳三星通信技术研究有限公司 | Integrated low-pass hard link structure and cavity filter |
| WO2021000611A1 (en) | 2019-07-02 | 2021-01-07 | Zhejiang Dahua Technology Co., Ltd. | Eletrical surge protection circuits |
| CN110401181B (en) * | 2019-07-02 | 2022-03-01 | 浙江大华技术股份有限公司 | Surge protection circuit |
| CN110556805A (en) * | 2019-09-26 | 2019-12-10 | 深圳市速联技术有限公司 | Ultra-wideband radio frequency coaxial lightning electromagnetic pulse protection method and device |
| CN111525527B (en) * | 2020-06-03 | 2023-03-21 | 深圳市速联技术有限公司 | Radio frequency signal thunder and lightning electromagnetic pulse protection device |
| CN111525528B (en) * | 2020-06-03 | 2023-03-21 | 深圳市速联技术有限公司 | Radio frequency signal thunder and lightning electromagnetic pulse multistage bidirectional protection device |
| CN111786735B (en) * | 2020-06-28 | 2021-04-13 | 深圳市速联技术有限公司 | Ultra-wideband radio frequency coaxial strong electromagnetic pulse protection method and device |
| CN112994715B (en) * | 2021-02-03 | 2022-02-18 | 深圳市速联技术有限公司 | Ultra-wideband radio frequency link strong electromagnetic pulse protection method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH660261A5 (en) * | 1982-12-30 | 1987-03-31 | Huber+Suhner Ag | EMP suppressor in a coaxial conductor |
| CN201210616Y (en) * | 2008-06-11 | 2009-03-18 | 四川铭士电子科技有限责任公司 | Wideband feed-through surge protector |
| CN101599569A (en) * | 2009-07-17 | 2009-12-09 | 华为技术有限公司 | Coupled structure and coaxial cavity filter |
| CN101986459A (en) * | 2010-11-04 | 2011-03-16 | 惠明 | Combiner for ultra-wideband wireless communication |
| CN102142679A (en) * | 2011-01-25 | 2011-08-03 | 中国舰船研究设计中心 | Strong-electromagnetic pulse protection device of ultra-short wave communication frequency range |
| WO2012007148A1 (en) * | 2010-07-15 | 2012-01-19 | Spinner Gmbh | Coaxial conductor structure |
-
2011
- 2011-11-22 CN CN 201110373461 patent/CN102403702B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH660261A5 (en) * | 1982-12-30 | 1987-03-31 | Huber+Suhner Ag | EMP suppressor in a coaxial conductor |
| CN201210616Y (en) * | 2008-06-11 | 2009-03-18 | 四川铭士电子科技有限责任公司 | Wideband feed-through surge protector |
| CN101599569A (en) * | 2009-07-17 | 2009-12-09 | 华为技术有限公司 | Coupled structure and coaxial cavity filter |
| WO2012007148A1 (en) * | 2010-07-15 | 2012-01-19 | Spinner Gmbh | Coaxial conductor structure |
| CN101986459A (en) * | 2010-11-04 | 2011-03-16 | 惠明 | Combiner for ultra-wideband wireless communication |
| CN102142679A (en) * | 2011-01-25 | 2011-08-03 | 中国舰船研究设计中心 | Strong-electromagnetic pulse protection device of ultra-short wave communication frequency range |
Non-Patent Citations (2)
| Title |
|---|
| 卢燕.电涌保护器的性能与试验方法研究.《中国优秀硕士学位论文全文数据库》.2008, |
| 电涌保护器的性能与试验方法研究;卢燕;《中国优秀硕士学位论文全文数据库》;20080820;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102403702A (en) | 2012-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102403702B (en) | HF/VHF frequency-range ultra wide band electromagnetic pulse protection module | |
| RU2251191C2 (en) | Pulse surge protective gear | |
| CN110233473B (en) | Thunder and lightning and ultra-wideband high-power microwave comprehensive protection circuit | |
| CN201956681U (en) | Power cord electromagnetic pulse protector | |
| CN110165647A (en) | A kind of military computer interface strong electromagnetic pulse protection circuit | |
| CN201001035Y (en) | RF lightning protection device | |
| CN102142679B (en) | Strong-electromagnetic pulse protection device of ultra-short wave communication frequency range | |
| KR101438122B1 (en) | Hemp protection apparatus for lan line | |
| CN210246313U (en) | Radio frequency link strong transient electromagnetic pulse comprehensive protection circuit | |
| CN203574361U (en) | Antenna feeder lightning protection device of RF radio frequency device for LED control | |
| CN106849972B (en) | A kind of Spark gap device | |
| CN203774777U (en) | Mobile device antenna protection circuit | |
| CN113394763A (en) | Communication receiver antenna feeder protector with electromagnetic pulse protection capability | |
| CN217642717U (en) | Induction lightning protection device applied to radio frequency interface | |
| CN110601159B (en) | Comprehensive protection circuit for strong transient electromagnetic pulse of radio frequency link | |
| KR102462454B1 (en) | Band antenna emp filter apparatus having hemp protection capability | |
| CN208955654U (en) | A kind of signal wire nuclear electromagnetic pulse protector | |
| CN201623476U (en) | Lightning stroke filtering protection module | |
| CN212137274U (en) | Network signal lightning protection circuit with grounding isolation suppression | |
| CN200997528Y (en) | Lightening-proof radio frequency module | |
| CN211046759U (en) | High-altitude nuclear electromagnetic pulse protection device | |
| CN107658859A (en) | A kind of Spark gap method for aircraft communication navigation system | |
| CN110336571B (en) | High-power microwave protection device with self-adaptive frequency selection broadband | |
| CN219372022U (en) | Short-wave antenna feeder surge protector integrating filter and gas discharge tube | |
| CN215646172U (en) | GPS active antenna electromagnetic pulse protection module and protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |