CN115360510A - High-energy microwave rejection patch antenna based on point discharge structure - Google Patents
High-energy microwave rejection patch antenna based on point discharge structure Download PDFInfo
- Publication number
- CN115360510A CN115360510A CN202210888233.4A CN202210888233A CN115360510A CN 115360510 A CN115360510 A CN 115360510A CN 202210888233 A CN202210888233 A CN 202210888233A CN 115360510 A CN115360510 A CN 115360510A
- Authority
- CN
- China
- Prior art keywords
- patch
- patch antenna
- rejection
- acute
- angle branch
- 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.)
- Granted
Links
- 230000001154 acute effect Effects 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims abstract description 12
- 230000015556 catabolic process Effects 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 4
- 230000010287 polarization Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention provides a high-energy microwave rejection patch antenna based on a point discharge structure. Wherein four acute angle branch knot structures are respectively located four angles on paster radiation limit, and its closed angle is placed with L shape ground structure's right angle relatively. When the strong electromagnetic pulse exceeding the threshold value irradiates the antenna, the high-energy microwave causes air breakdown discharge through the acute-angle branch structure and is released to the ground. The invention has the capability of inhibiting high-energy microwaves under the condition of not influencing the transceiving function of the antenna, has a simple planar structure, is easy to integrate into a group array, and can be applied to a phased array radar system with the electromagnetic pulse protection function.
Description
Technical Field
The invention belongs to the technical field of electronic protection and electromagnetic compatibility.
Background
In recent decades, the application of electromagnetic pulse is rapidly developed, and the research on electromagnetic protection is gradually expanded, so that the electromagnetic pulse is developed into the research on the electromagnetic environmental effect of an electronic system. At present, relatively complete standards and relevant specifications for electromagnetic protection have been established in the united states, wherein there are clear indexes against static electricity and electromagnetic pulses, and high-power microwave electromagnetic radiation is a main research content, and the influence on electronic systems and protection technology for alleviating the influence are focused.
The effects of strong electromagnetic pulses on electronic systems are classified as disturbing, degrading, damaging and destroying, which mainly depend on the power generated by the electromagnetic pulses, the distance to the target and the characteristics of the electromagnetic pulse radiation (frequency, pulse speed, pulse duration, etc.), and also the protective capabilities of the target. In the L and S wave bands, when the HPM radiation amplitude reaches hundreds of V/m, the signal imperfection problem in the communication system becomes very serious; when the HPM radiation intensity is further increased to 15-25kV/m, the communication device will be permanently broken down even if not in operation. The damage effect of strong electromagnetic pulses refers to the effect of strong electromagnetic pulses on various objects and systems. The electric effect means that when the microwave is emitted to the target, the transient magnetic field of the microwave generates a high voltage or a large current on the metal surface or the wire of the target, and the intensity of the induced voltage or current is increased along with the increase of the intensity of the microwave. When using 0.011 muW/cm 2 When the microwave beam with power density irradiates a target, radar, communication equipment and a navigation system on a corresponding frequency band can be interfered, so that the radar, the communication equipment and the navigation system cannot work normally. When the power density reaches 0.01-1W/cm 2 In time, performance degradation or failure of components of radar, communication equipment, and navigation systems may result, as well as failure or burn-out of chips of the small computer system. When the power density is 10-100W/cm 2 When the strong microwave wave beam irradiates a target, an electromagnetic field formed by radiation of the strong microwave wave beam can generate induced current on the surface of the metal target, and the induced current enters a circuit of electronic equipment in a system such as a missile, an airplane, a satellite, a tank and the like through an antenna, a lead, a metal opening or a gap. If the induced current is large, the circuit can be disordered, error codes can occur, data or information transmission can be interrupted, and computer storage or memory information can be erased. If the induced current is large, components in the circuit can be burnt, and military equipment and weapon systems can be disabled.
Under the action of strong electromagnetic pulses, the electromagnetic protection of weaponry mainly comprises the protection of an antenna port, the protection of a host case, the protection of a radio frequency front end, the protection of a power cable, the protection of sensitive devices and circuits and the like, and the traditional strong electromagnetic pulse protection method mainly comprises filtering and amplitude limiting. The method prevents strong electromagnetic pulse from damaging a system from a frequency domain and an energy domain through out-of-band filtering and in-band amplitude limiting methods, and adopts a frequency selection surface, a plasma amplitude limiter and the like to protect spatial coupling approaches such as an antenna, a large-opening hole seam and the like, and adopts a filter, a PIN amplitude limiter, a gas discharge tube, a surge protection device and the like to protect coupling approaches such as a power line, a signal line and the like. However, there are certain limitations to the application of these approaches to strong electromagnetic shielding. From the threat source, the high-power microwave source has large instantaneous radiation power, high pulse peak field intensity and power density and large killing range, the radiation spectrum can cover 30MHz-50 GHz, the pulse peak power reaches dozens of Gigawatts (GW), the instantaneous electromagnetic pulse peak field intensity can reach hundreds of kilovolts/meter, and higher requirements are provided for the power capacity and the working bandwidth of the existing electromagnetic protection. From the perspective of a protected object, electromagnetic protection of a spatial field is the most critical in electronic system design, and the most effective method for constructing a safe electromagnetic space is metal shielding, but the metal shielding effectively shields strong electromagnetic pulses and simultaneously blocks signal transceiving of protected equipment. Under the threat condition of strong electromagnetic environment, the electronic system can resist the attack of strong electromagnetic pulse and can effectively receive and send normal electromagnetic signals, so that the electromagnetic protection means is required to have the energy low-pass characteristic, the effect similar to the space amplitude limiting is achieved, and the safety of the electronic system is always ensured.
Disclosure of Invention
The invention provides a high-energy microwave rejection patch antenna based on a point discharge structure, which solves the problem of normal operation of electronic equipment under the threat condition of a strong electromagnetic environment, has the characteristics of low cost, simple structure, easiness in conformal integration and the like, and can be widely applied to the field of electromagnetic protection.
The technical scheme for realizing the invention is as follows:
a high-energy microwave rejection patch antenna based on a point discharge structure comprises a patch antenna, an acute-angle branch section, an L-shaped grounding structure, a dielectric substrate, a grounding plate and a feed shaft, wherein the feed shaft is coaxial;
wherein: the grounding plate is positioned on the lower surface of the dielectric substrate, supports the dielectric substrate and fixes the feed coaxial;
the coaxial inner conductor of feed passes through the grounding plate and the dielectric substrate and then is connected with the patch feed;
the acute angle branch nodes are positioned on the radiation edge of the microstrip patch and distributed on four corners of the patch;
the L-shaped grounding structures and the acute-angle branch sections are arranged in pairs and are separated by a certain distance, and each L-shaped grounding structure is connected with the grounding plate through two metal columns.
Induced voltage is generated between the acute angle branch section and the L-shaped grounding structure through external strong electromagnetic pulse coupling excitation, and when the induced voltage exceeds an air breakdown voltage threshold value, high-energy microwaves are released through grounding, so that an energy rejection function is realized.
Furthermore, the polarization direction of the dielectric substrate is consistent with that of the patch antenna, and a Taconic RF-35TC high-frequency microwave plate with the thickness of 0.508mm is adopted; according to strong electromagnetic pulse excitation with peak field intensity of 50kV/m to 22kV/m, the angle range of the acute angle branch section is within 20 degrees to 45 degrees, and the distance between the acute angle branch section and the L-shaped grounding structure is 1.4mm. .
Compared with the prior art, the patch antenna for rejecting strong electromagnetic pulses has the following beneficial effects:
1. when the high-energy electromagnetic field irradiates the antenna, the incident electromagnetic wave energy is allowed to pass through when the energy does not reach the threshold value, and is discharged and grounded when the energy exceeds the threshold value, so that the electromagnetic protection effect is achieved;
2. the additional discharge structure is small in size, the threshold value is flexibly adjusted, the design of a large-scale phased array antenna is suitable, an energy selection antenna housing is replaced, the insertion loss is reduced, and the design difficulty is reduced.
3. Within the energy threshold of the incident electromagnetic pulse, the designed point discharge structure has little influence on the matching and radiation characteristics of the patch antenna.
Drawings
Fig. 1 is a structural diagram of a patch antenna for rejecting strong electromagnetic pulses provided by the present invention, wherein 1 is a dielectric substrate, 2 is a patch antenna, 3 is a feed coaxial line, 4 is an acute angle stub, and 5 is an L-shaped grounding structure;
fig. 2 is a schematic diagram of a 1 × 5 array structure formed by the antenna units in fig. 1;
FIG. 3 is a comparison of the active reflection coefficients of the antenna element of FIG. 1 under periodic boundary conditions with or without an additional discharge structure;
fig. 4 shows induced voltages of the discharge structure when the applied excitation radiation exceeds a threshold value for the 1 × 5 line array of fig. 2.
Detailed Description
The invention is described in detail below with reference to a 1 x 5 antenna array embodiment.
The element matching characteristics in the array can be analyzed by adopting infinite period boundaries for the periodic structure design.
As shown in FIG. 1, tastic RF-35TC with a thickness of 0.508mm is used as the dielectric substrate in this example, and the dielectric constant and the loss tangent angle are 3.5 and 0.0011, respectively. The antenna unit consists of a microstrip patch and an additional discharge structure, wherein the patch feeds power by utilizing an inner conductor of the coaxial connector, and the additional discharge structure consists of four acute-angle branch sections of a patch radiation edge and an L-shaped grounding structure. The side lengths of two right angles of the acute angle branch section are 3mm, the right angle distance between the acute angle branch section and the L-shaped grounding structure is 1.4mm, the side length of the L-shaped grounding structure is 1mm, and the L-shaped grounding structure is grounded through a metal column. And after array formation, the acute angle is adjusted by changing the side length of the acute branch, and the smaller the angle is, the lower the discharge threshold value is, and the higher the discharge threshold value is otherwise.
Fig. 2 is a top view of a 1 x 5 antenna horizontally arranged with a center frequency point half-wavelength (15 mm) cell pitch.
Fig. 3 shows the active standing wave in the array with or without the additional discharge structure of the antenna elements. The dotted line represents no additional discharge structure, the solid line represents the additional discharge structure, and the two have only slight frequency deviation difference and do not affect the impedance matching of the antenna.
Fig. 4 shows the induced voltage of the additional discharge structure when the linear array is illuminated by an external plane wave. The polarization direction of the plane wave is consistent with the polarization of the antenna, the amplitude of the plane wave is 22kV/m, the voltage difference is 3.079MV/m at the moment and exceeds the air breakdown voltage threshold (3 MV/m), external energy cannot be transmitted through the antenna, and the electromagnetic shielding effect is realized.
The foregoing is a detailed description of the present invention in connection with specific preferred embodiments and is not intended to limit the invention to the specific embodiments described. For those skilled in the art to which the invention pertains, numerous simple deductions or substitutions may be made without departing from the inventive concept, such as home-made dielectric substrates with the same electrical and structural parameters, which shall be deemed to belong to the scope of the invention as defined in the appended claims.
Claims (2)
1. The utility model provides a high energy microwave rejection patch antenna based on point discharge structure which characterized in that: the antenna comprises a patch antenna, an acute angle branch section, an L-shaped grounding structure, a dielectric substrate, a grounding plate and a feeding coaxial line; the grounding plate is positioned below the dielectric substrate, supports the dielectric substrate and fixes the feed coaxial; the coaxial inner conductor of feed passes through the grounding plate and the dielectric substrate and then is connected with the patch feed; the acute angle branch nodes are positioned on the radiation edge of the microstrip patch and distributed on four corners of the patch; the L-shaped grounding structures and the acute angle branch sections are arranged in pairs and are separated by a certain distance, and each L-shaped grounding structure is connected with the grounding plate through two metal columns; the external strong electromagnetic pulse is coupled and excited, an induced voltage is generated between the acute angle branch section and the L-shaped grounding structure, and the air breakdown characteristic of the induced voltage is utilized to realize the energy rejection function.
2. The high-energy microwave rejection patch antenna based on a point discharge structure as claimed in claim 1, wherein: the polarization direction of the dielectric substrate is consistent with that of the patch antenna, and a Taonic RF-35TC high-frequency microwave plate with the thickness of 0.508mm is adopted; according to strong electromagnetic pulse excitation with peak field intensity of 50kV/m to 22kV/m, the angle range of the acute-angle branch node is within 20 degrees to 45 degrees, and the distance between the acute-angle branch node and the L-shaped grounding structure is 1.4mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210888233.4A CN115360510B (en) | 2022-07-27 | 2022-07-27 | High-energy microwave rejection patch antenna based on tip discharge structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210888233.4A CN115360510B (en) | 2022-07-27 | 2022-07-27 | High-energy microwave rejection patch antenna based on tip discharge structure |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115360510A true CN115360510A (en) | 2022-11-18 |
CN115360510B CN115360510B (en) | 2024-06-18 |
Family
ID=84031721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210888233.4A Active CN115360510B (en) | 2022-07-27 | 2022-07-27 | High-energy microwave rejection patch antenna based on tip discharge structure |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115360510B (en) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6870498B1 (en) * | 1987-05-28 | 2005-03-22 | Mbda Uk Limited | Generation of electromagnetic radiation |
KR101335653B1 (en) * | 2013-04-01 | 2013-12-03 | 충남대학교산학협력단 | Antenna for protecting electromagnetic pulse wave |
CN104112899A (en) * | 2014-04-28 | 2014-10-22 | 西安电子工程研究所 | High-power discone antenna |
US20150011121A1 (en) * | 2013-07-05 | 2015-01-08 | Electronics And Telecommunications Research Institute | Antenna line protection device |
CN105098337A (en) * | 2014-05-12 | 2015-11-25 | 成都振芯科技股份有限公司 | Circular polarization microstrip patch antenna with high-sensitivity stubs |
CN108879087A (en) * | 2017-05-16 | 2018-11-23 | 南京理工大学 | A kind of single layer wideband microband array antenna with harmonics restraint |
WO2020141291A1 (en) * | 2019-01-04 | 2020-07-09 | The Secretary Of State For Defence | Electromagnetic pulse detector and method of use |
CN112117546A (en) * | 2020-09-17 | 2020-12-22 | 中国人民解放军国防科技大学 | C-band ultra-wideband energy selection surface |
CN112290228A (en) * | 2020-12-29 | 2021-01-29 | 成都信息工程大学 | Linear-circularly polarized reconfigurable antenna and lightning protection method |
CN113540825A (en) * | 2021-07-02 | 2021-10-22 | 中国船舶重工集团公司第七二四研究所 | Low-profile energy selection phased array antenna unit |
CN113555681A (en) * | 2021-03-19 | 2021-10-26 | 电子科技大学 | Ultra-wideband butt-heel Vivaldi antenna with high peak power |
CN114089283A (en) * | 2021-11-17 | 2022-02-25 | 吉林大学 | Vehicle-mounted millimeter wave radar strong electromagnetic pulse protection device based on energy selection surface |
CN218160815U (en) * | 2022-07-27 | 2022-12-27 | 中国船舶重工集团公司第七二四研究所 | High-energy microwave rejection patch antenna based on point discharge structure |
-
2022
- 2022-07-27 CN CN202210888233.4A patent/CN115360510B/en active Active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6870498B1 (en) * | 1987-05-28 | 2005-03-22 | Mbda Uk Limited | Generation of electromagnetic radiation |
KR101335653B1 (en) * | 2013-04-01 | 2013-12-03 | 충남대학교산학협력단 | Antenna for protecting electromagnetic pulse wave |
US20150011121A1 (en) * | 2013-07-05 | 2015-01-08 | Electronics And Telecommunications Research Institute | Antenna line protection device |
CN104112899A (en) * | 2014-04-28 | 2014-10-22 | 西安电子工程研究所 | High-power discone antenna |
CN105098337A (en) * | 2014-05-12 | 2015-11-25 | 成都振芯科技股份有限公司 | Circular polarization microstrip patch antenna with high-sensitivity stubs |
CN108879087A (en) * | 2017-05-16 | 2018-11-23 | 南京理工大学 | A kind of single layer wideband microband array antenna with harmonics restraint |
WO2020141291A1 (en) * | 2019-01-04 | 2020-07-09 | The Secretary Of State For Defence | Electromagnetic pulse detector and method of use |
CN112117546A (en) * | 2020-09-17 | 2020-12-22 | 中国人民解放军国防科技大学 | C-band ultra-wideband energy selection surface |
CN112290228A (en) * | 2020-12-29 | 2021-01-29 | 成都信息工程大学 | Linear-circularly polarized reconfigurable antenna and lightning protection method |
CN113555681A (en) * | 2021-03-19 | 2021-10-26 | 电子科技大学 | Ultra-wideband butt-heel Vivaldi antenna with high peak power |
CN113540825A (en) * | 2021-07-02 | 2021-10-22 | 中国船舶重工集团公司第七二四研究所 | Low-profile energy selection phased array antenna unit |
CN114089283A (en) * | 2021-11-17 | 2022-02-25 | 吉林大学 | Vehicle-mounted millimeter wave radar strong electromagnetic pulse protection device based on energy selection surface |
CN218160815U (en) * | 2022-07-27 | 2022-12-27 | 中国船舶重工集团公司第七二四研究所 | High-energy microwave rejection patch antenna based on point discharge structure |
Non-Patent Citations (2)
Title |
---|
倪鹏程,刘昆,杜雨洺, 成都信息工程大学学报/闪电对N79频段5G微带天线的电磁耦合效应研究, vol. 37, no. 3, 25 May 2022 (2022-05-25), pages 270 - 275 * |
张庆海,武占成,王庆国, 中国物理学会静电专业委员会第十三届学术年会论文集/尖端放电辐射场仿真研究, 30 June 2006 (2006-06-30), pages 25 - 28 * |
Also Published As
Publication number | Publication date |
---|---|
CN115360510B (en) | 2024-06-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4985800A (en) | Lighting protection apparatus for RF equipment and the like | |
CN102437399B (en) | High-power microwave impulse shield | |
CN112103660B (en) | C-band broadband energy selection surface | |
US8994471B2 (en) | Stacked diode limiter | |
CN218160815U (en) | High-energy microwave rejection patch antenna based on point discharge structure | |
KR101831234B1 (en) | Gps systems for high power electromagnetic protection | |
CN113540825A (en) | Low-profile energy selection phased array antenna unit | |
CN1213510C (en) | Lightning protection of using plaster/micro-stripe unit active antenna | |
CN114824704B (en) | Electromagnetic protection assembly based on substrate integrated waveguide | |
CN115360510B (en) | High-energy microwave rejection patch antenna based on tip discharge structure | |
CN116154486A (en) | High-power electromagnetic damage resistant planar array antenna unit | |
CN111525527B (en) | Radio frequency signal thunder and lightning electromagnetic pulse protection device | |
KR102462454B1 (en) | Band antenna emp filter apparatus having hemp protection capability | |
Huang et al. | Self-switchable broadband waveguide protector against high power microwave | |
KR101335653B1 (en) | Antenna for protecting electromagnetic pulse wave | |
Cho et al. | Compact microwave waveguide limiter | |
CN201983706U (en) | Antenna feed electromagnetic pulse protector | |
CN111030069A (en) | Radio frequency front end electromagnetic pulse protection method | |
CN115603062B (en) | Energy selection surface with adjustable nonreciprocal ultra-wideband threshold | |
CN111525528B (en) | Radio frequency signal thunder and lightning electromagnetic pulse multistage bidirectional protection device | |
KR101506619B1 (en) | Antenna line protective device | |
CN215378880U (en) | Full-band electromagnetic pulse protection device | |
CN217063275U (en) | Thunder and lightning electromagnetic pulse integration ultrashort wave port protection module | |
EP0633622B1 (en) | Lightning protection for antenna systems | |
Liang et al. | Coupling effect of high intensity electromagnetic pulse on the shipboard integrated RF system |
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 | ||
CB02 | Change of applicant information |
Address after: 210003 No. 346, Zhongshan North Road, Jiangsu, Nanjing Applicant after: 724 Research Institute of China Shipbuilding Corp. Address before: 210003 No. 346, Zhongshan North Road, Jiangsu, Nanjing Applicant before: 724TH RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. |
|
CB02 | Change of applicant information | ||
GR01 | Patent grant | ||
GR01 | Patent grant |