CN102142679A - Strong-electromagnetic pulse protection device of ultra-short wave communication frequency range - Google Patents
Strong-electromagnetic pulse protection device of ultra-short wave communication frequency range Download PDFInfo
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- CN102142679A CN102142679A CN2011100258611A CN201110025861A CN102142679A CN 102142679 A CN102142679 A CN 102142679A CN 2011100258611 A CN2011100258611 A CN 2011100258611A CN 201110025861 A CN201110025861 A CN 201110025861A CN 102142679 A CN102142679 A CN 102142679A
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Abstract
The invention provides a strong-electromagnetic pulse protection device of an ultra-short wave communication frequency range. The device is characterized by comprising a gas discharge pipe, a micro-strip low-pass filter and a lumped parameter band-pass filter which are encapsulated in a metal box, wherein an input end and an output end are arranged at two ends of the metal box; the input end is connected with one end of the gas discharge pipe and the input end of the micro-strip low-pass filter respectively; the other end of the gas discharge pipe is grounded; the output end of the micro-strip low-pass filter is connected with the input end of the lumped parameter band-pass filter; the output end of the lumped parameter band-pass filter is connected with the output end of the metal box; and the input end and the output end at the two ends of the metal box are coaxial ports. By adoption of two-stage protection circuits of the gas discharge pipe and the micro-strip low-pass filter, the strong-electromagnetic pulse protection device of the ultra-short wave communication frequency range can more reliably filter a strong-electromagnetic pulse having a shorter rising front edge.
Description
Technical field
The invention belongs to strong electromagnetic pulse guard technology field, relate in particular to a kind of combined type strong electromagnetic pulse protector that is applicable to ultra short wave communication equipment, can be used for the forceful electric power subpulse protection of various ultrashort wave frequency range communication electronic equipments.
Background technology
Development along with the electromagnetic pulse technology, the electromagnetic impulse radiation field intensity reaches hundreds of kV/m, reach pulse rise time below the 1ns, harm to communication electronic equipment is increasing, the electromagnetic pulse voltage that strong electromagnetic pulse is responded on equipment such as communication, electric current can make equipment such as communication moment puncture or burn, and therefore press for communication electronic equipment is carried out the strong electromagnetic pulse protection.
Modes such as strong electromagnetic pulse can be coupled by antenna, signal cable coupling, power cable coupling enter electronic equipment internal, especially be coupled into the harm maximum of receiver front end by antenna, its high voltage that causes, big electric current will make equipment such as ultra short wave communication suffer serious damage.For making the ultra short wave communication electronic equipment have the ability of anti-strong electromagnetic pulse, need install the electromagnetic pulse protection module additional at the radiofrequency signal cable of receiver front end, and receiver is being carried out need to consider in the protection process coupling of cable transmission impedance to make its influence very little to normal transmission signals.And the anti-lightning strike module response time of traditional receive path is longer, and is not obvious for the strong electromagnetic pulse protection effect of ns level rising front, also is not specifically designed to the strong electromagnetic pulse protector of ultrashort wave frequency range communication control processor at present.
Summary of the invention
The technical problem to be solved in the present invention is: the strong electromagnetic pulse protector that a kind of ultra short wave communication frequency range is provided.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be: the strong electromagnetic pulse protector of ultra short wave communication frequency range, it is characterized in that: it comprises gas discharge tube, Microstrip Low-Pass and lumped parameter band pass filter, three parts are encapsulated in the can, the can two ends are provided with input and output, wherein input is connected with the input of described gas discharge tube one end and Microstrip Low-Pass respectively, the other end ground connection of gas discharge tube, the output of Microstrip Low-Pass is connected with the input of described lumped parameter band pass filter, and the output of lumped parameter band pass filter is connected with the output of can; The input and the output at described can two ends are coaxial port.
Press such scheme, be provided with ground floor printed circuit board and second layer printed circuit board in the described can, two-layer printed circuit board is equipped with conducting surface and ground plane; Described Microstrip Low-Pass is arranged on the conducting surface of ground floor printed circuit board, and described lumped parameter band pass filter is arranged on the conducting surface of second layer printed circuit board, connects by transmission line between the two-layer printed circuit board; The ground floor printed circuit board is connected with input, and second layer printed circuit board is connected with output.
Press such scheme, described Microstrip Low-Pass comprises microstrip capacitor and the little charged sense on microstrip line and the microstrip line, and microstrip capacitor and little charged sense are staggered; The input of Microstrip Low-Pass is provided with rosette; The input of described can links to each other with the input of low-pass filter by the heart yearn extended line, and rosette is connected with gas discharge tube one end through circular hole on the microstrip filter circuit board; The exponent number of Microstrip Low-Pass is the 3-5 rank.
Press such scheme, described lumped parameter band pass filter is formed by connecting by 3-7 rank band pass filter, and each rank band pass filter is made up of 1 electric capacity and 1 inductance; The input of lumped parameter band pass filter is provided with the smb seat and links to each other by transmission line with microstrip filter, and the output of lumped parameter band pass filter is connected by the heart yearn extended line with the output of can.
Press such scheme, described can comprises the bonnet in shell and the shell, has radius between bonnet and the shell and be the semi-circular recesses about 1.5mm, is full of conductive rubber in the groove, and bonnet and shell are by screw; The input and the output at described can two ends are tied with mackintosh.
Press such scheme, described bonnet contacts with the ground plane of described ground floor printed circuit board; Described gas discharge tube contacts with described bonnet.
Press such scheme, the contact-making surface between described gas discharge tube and the described bonnet scribbles one deck silver powder conductive paste.
Press such scheme, described shell is provided with fixed component.
Operation principle of the present invention is: after the input of signal process can enters this protector, utilize the heart yearn extended line to be connected on the disk at ground floor printed circuit board center and to pass rosette and be welded on the Microstrip Low-Pass, rosette connects gas discharge tube and constitutes bypass and ground connection.When the high voltage of strong electromagnetic pulse generation causes gas discharge tube to puncture; its low frequency energy is weakened greatly; strong electromagnetic pulse becomes short pulse; its energy is mainly high fdrequency component; after removing high frequency through Microstrip Low-Pass filtering this moment; the high-frequency energy of electromagnetic pulse is reflected; utilize transmission line the output of Microstrip Low-Pass upwards to be connected to the input of second layer printed circuit board at last; lumped parameter band-pass filter through the ultrashort wave frequency range; out of band signal filtering with the working frequency range of preceding dual-electrode protecting circuit remnants; further reduce the interference of electromagnetic pulse, then the output of lumped parameter band pass filter is connected the output of can electronic equipment.
Beneficial effect of the present invention is:
1, adopts gas discharge tube and little band low-pass filter circuit two-stage protection circuit, can filtering more reliably have the strong electromagnetic pulse of shorter rising front.
2, choose the suitable filters exponent number, in the time of the interior differential loss of band can being controlled at smaller value, make the outer differential loss of band reach maximum, reflect the strong electromagnetic pulse energy as far as possible.
3, contact-making surface is coated with one deck silver powder conductive paste between flue and metal back cover, can further reduce earth resistance.
4, adopt filled conductive rubber between bonnet and shell, and the waterproofing design of input and output winding mackintosh, the influence of steam avoided to devices such as gas discharge tube, little band filter circuit, lumped parameter band pass filters.
5, adopt standard N type coaxial port, improved compatibility, install and use convenient.
6, on the can shell, increase fixed component, can easily can be mounted on the metallic plate, and form good earth.
Description of drawings
Fig. 1 is the equivalent circuit diagram of one embodiment of the invention.
Fig. 2 is the structural representation of one embodiment of the invention.
Fig. 3 is a can shell mechanism schematic diagram.
Fig. 4 is the rear cover structure schematic diagram.
Fig. 5 is the Microstrip Low-Pass structural representation.
Fig. 6 is a lumped parameter band pass filter schematic diagram.
Among the figure: input 1, output 2, shell 3, bonnet 4, gas discharge tube 5, screw 6, rosette 7, second layer printed circuit board 8, ground floor printed circuit board 9, microstrip line 9.1, microstrip capacitor 9.2,9.3,9.4, little charged sense 9.5,9.6, heart yearn extended line 10, transmission line 11, fixed component 12, conductive rubber 13.
Embodiment
Fig. 1 is the equivalent circuit diagram of one embodiment of the invention, input is connected with the input of gas discharge tube one end and Microstrip Low-Pass respectively, the other end ground connection of gas discharge tube, the output of Microstrip Low-Pass is connected with the input of described lumped parameter band pass filter, and the output of lumped parameter band pass filter is connected with output.
Fig. 2 is the structural representation of one embodiment of the invention, is provided with ground floor printed circuit board 9 and second layer printed circuit board 8 in the can, and two-layer printed circuit board is equipped with conducting surface and ground plane; Described Microstrip Low-Pass is arranged on the conducting surface of ground floor printed circuit board 9, and described lumped parameter band pass filter is arranged on the conducting surface of second layer printed circuit board 8, connects by transmission line 11 between the two-layer printed circuit board; Ground floor printed circuit board 9 is connected by heart yearn extended line 10 with input 1, and second layer printed circuit board 8 is connected with output 2.Gas discharge tube 5 is connected with Microstrip Low-Pass on the ground floor printed circuit board 9, and the other end of gas discharge tube 5 is connected with bonnet 4 and the two contacts with each other, and contact-making surface scribbles one deck silver powder conductive paste.Bonnet 4 contacts with the ground plane of ground floor printed circuit board 9, so makes gas discharge tube 5 ground connection.
Fig. 3 is a can shell mechanism schematic diagram, Fig. 4 is the rear cover structure schematic diagram, described can comprises the bonnet 4 in shell 3 and the shell, have radius between bonnet and the shell and be the semi-circular recesses about 1.5mm, be full of conductive rubber 13 in the groove, bonnet 4 and shell 3 are fixing by screw 6, bonnet 4 is fixed together with shell 3 and closely contacts; The input and the output at described can two ends are tied with mackintosh, make that the whole protection module not only can good earth, can also prevent the operate as normal that enters and then influence module of steam.Shell 3 is provided with fixed component 12, can easily above-mentioned protection module be mounted on the metallic plate, and form good earth.
Fig. 5 is the Microstrip Low-Pass structural representation, and Microstrip Low-Pass comprises microstrip capacitor 9.2,9.3,9.4 and little charged sense 9.5,9.6 of interlaced arrangement on microstrip line 9.1 and the microstrip line; The input of Microstrip Low-Pass and output all are provided with rosette 7; The input of described can is connected with the input and gas discharge tube one end of low-pass filter by heart yearn extended line 10.This filter is generally chosen the 3-5 rank, in the time of the interior differential loss of band can being controlled at smaller value, makes the outer differential loss of band reach maximum, reflects the strong electromagnetic pulse energy as far as possible.Present embodiment is chosen 3 rank, and differential loss can be less than 0.5dB in the band; Differential loss is 1dB in the band if allow, and then can choose 5 rank.The narrowest place of microstrip line should be greater than more than the 0.2mm, avoids causing because of microstrip line is meticulous strong electromagnetic pulse current fusing microstrip line.
Through after the Microstrip Low-Pass, the strong electromagnetic pulse energy is released basically and is reflected.By transmission line 11, signal arrives second layer printed circuit board 8, by the lumped parameter band pass filter of ultrashort wave frequency range, and further filtering residual interference signal after gas discharge tube 5 and Microstrip Low-Pass.
Fig. 6 is a lumped parameter band pass filter schematic diagram, and 8.1 for concentrating device capacitor, and 8.2 are inductance (generally elect wire-wound inductor as, the ability of bearing high voltage, big electric current is stronger), and n represents the exponent number of lumped parameter band pass filter.The lumped parameter band pass filter is made up of multistage band pass filter, each rank comprises 1 electric capacity and 1 inductance, connection between each rank can have many kinds of compound modes, and these combinations are known to those skilled in the art, here the physical circuit annexation is not described further.The exponent number of lumped parameter band pass filter is generally the 3-7 rank, is preferably 5 rank, can keep in the less band under the differential loss situation, reaches maximum band degree of inhibition outward.The input of lumped parameter band pass filter is provided with the smb seat and is connected by transmission line with microstrip filter, and the output of can is welded on the output of band pass filter by the heart yearn extended line.
Claims (8)
1. the strong electromagnetic pulse protector of ultra short wave communication frequency range, it is characterized in that: it comprises gas discharge tube, Microstrip Low-Pass and lumped parameter band pass filter, three parts are encapsulated in the can, the can two ends are provided with input and output, wherein input is connected with the input of described gas discharge tube one end and Microstrip Low-Pass respectively, the other end ground connection of gas discharge tube, the output of Microstrip Low-Pass is connected with the input of described lumped parameter band pass filter, and the output of lumped parameter band pass filter is connected with the output of can; The input and the output at described can two ends are coaxial port.
2. the strong electromagnetic pulse protector of ultra short wave communication frequency range according to claim 1 is characterized in that: be provided with ground floor printed circuit board and second layer printed circuit board in the described can, two-layer printed circuit board is equipped with conducting surface and ground plane; Described Microstrip Low-Pass is arranged on the conducting surface of ground floor printed circuit board, and described lumped parameter band pass filter is arranged on the conducting surface of second layer printed circuit board, connects by transmission line between the two-layer printed circuit board; The ground floor printed circuit board is connected with input, and second layer printed circuit board is connected with output.
3. the strong electromagnetic pulse protector of ultra short wave communication frequency range according to claim 2 is characterized in that: described Microstrip Low-Pass comprises microstrip capacitor and the little charged sense on microstrip line and the microstrip line, and microstrip capacitor and little charged sense are staggered; The input of Microstrip Low-Pass is provided with rosette; The input of described can links to each other with the input of low-pass filter by the heart yearn extended line, and rosette is connected with gas discharge tube one end through circular hole on the microstrip filter circuit board; The exponent number of Microstrip Low-Pass is the 3-5 rank.
4. the strong electromagnetic pulse protector of ultra short wave communication frequency range according to claim 2 is characterized in that: described lumped parameter band pass filter is formed by connecting by 3-7 rank band pass filter, and each rank band pass filter is made up of 1 electric capacity and 1 inductance; The input of lumped parameter band pass filter is provided with the smb seat and links to each other by transmission line with microstrip filter, and the output of lumped parameter band pass filter is connected by the heart yearn extended line with the output of can.
5. according to the strong electromagnetic pulse protector of any described ultra short wave communication frequency range in the claim 2 to 4, it is characterized in that: described can comprises the bonnet in shell and the shell, have radius between bonnet and the shell and be the semi-circular recesses about 1.5mm, be full of conductive rubber in the groove, bonnet and shell are by screw; The input and the output at described can two ends are tied with mackintosh.
6. the strong electromagnetic pulse protector of ultra short wave communication frequency range according to claim 5 is characterized in that: described bonnet contacts with the ground plane of described ground floor printed circuit board; Described gas discharge tube contacts with described bonnet.
7. the strong electromagnetic pulse protector of ultra short wave communication frequency range according to claim 6 is characterized in that: the contact-making surface between described gas discharge tube and the described bonnet scribbles one deck silver powder conductive paste.
8. the strong electromagnetic pulse protector of ultra short wave communication frequency range according to claim 5 is characterized in that: described shell is provided with fixed component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110025861.1A CN102142679B (en) | 2011-01-25 | 2011-01-25 | Strong-electromagnetic pulse protection device of ultra-short wave communication frequency range |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110025861.1A CN102142679B (en) | 2011-01-25 | 2011-01-25 | Strong-electromagnetic pulse protection device of ultra-short wave communication frequency range |
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| CN102142679A true CN102142679A (en) | 2011-08-03 |
| CN102142679B CN102142679B (en) | 2014-07-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403702A (en) * | 2011-11-22 | 2012-04-04 | 中国舰船研究设计中心 | HF/VHF frequency-range ultra wide band electromagnetic pulse protection module |
| WO2018126582A1 (en) * | 2017-01-07 | 2018-07-12 | 深圳市景程信息科技有限公司 | Electromagnetic pulse protection device having cylindrical structure |
| CN109473958A (en) * | 2017-09-08 | 2019-03-15 | 深圳创维数字技术有限公司 | A kind of lightning protection circuit and electrical equipment |
| 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 |
| CN111786734A (en) * | 2020-06-28 | 2020-10-16 | 深圳市速联技术有限公司 | Radio frequency coaxial strong electromagnetic pulse protection method and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403702A (en) * | 2011-11-22 | 2012-04-04 | 中国舰船研究设计中心 | HF/VHF frequency-range ultra wide band electromagnetic pulse protection module |
| CN102403702B (en) * | 2011-11-22 | 2013-11-06 | 中国舰船研究设计中心 | HF/VHF frequency-range ultra wide band electromagnetic pulse protection module |
| WO2018126582A1 (en) * | 2017-01-07 | 2018-07-12 | 深圳市景程信息科技有限公司 | Electromagnetic pulse protection device having cylindrical structure |
| CN109473958A (en) * | 2017-09-08 | 2019-03-15 | 深圳创维数字技术有限公司 | A kind of lightning protection circuit and electrical equipment |
| CN109473958B (en) * | 2017-09-08 | 2023-11-21 | 深圳创维数字技术有限公司 | Lightning protection circuit and electrical equipment |
| 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 |
| CN111786734A (en) * | 2020-06-28 | 2020-10-16 | 深圳市速联技术有限公司 | Radio frequency coaxial strong electromagnetic pulse protection method and device |
| CN111786734B (en) * | 2020-06-28 | 2021-05-07 | 深圳市速联技术有限公司 | Radio frequency coaxial strong electromagnetic pulse protection method and device |
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| CN102142679B (en) | 2014-07-09 |
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