CN115458888A - Coaxial broadband high-power protection module - Google Patents
Coaxial broadband high-power protection module Download PDFInfo
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- CN115458888A CN115458888A CN202211318553.2A CN202211318553A CN115458888A CN 115458888 A CN115458888 A CN 115458888A CN 202211318553 A CN202211318553 A CN 202211318553A CN 115458888 A CN115458888 A CN 115458888A
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- 238000003780 insertion Methods 0.000 description 3
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- H—ELECTRICITY
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Abstract
The application belongs to the field of electromagnetic protection, and relates to a coaxial broadband high-power protection module, which comprises: the device comprises an input port, an output port, a hollow shell, an inner core and a dielectric layer; one end of the shell is connected with the input port, and the other end of the shell is connected with the output port; the medium layer is arranged on one cross section of the shell; the inner core is coaxial with the shell, one end of the inner core is connected with the input port, and the other end of the inner core penetrates through the center of the medium layer and then is connected with the output port; the diode is arranged on the dielectric layer and electrically connected with the inner core and the outer shell; the dielectric layer includes: the metal patch comprises a dielectric substrate, a metal patch and a metal ground, wherein the metal patch and the metal ground are arranged on the dielectric substrate; the metal patch faces the input port, and the metal ground faces the output port; the diode is arranged on the metal patch. By adopting the method and the device, the impact of strong electromagnetic energy can be effectively resisted, and the effective protection of a front door strong radio frequency field of an information system is realized.
Description
Technical Field
The application relates to the technical field of electromagnetic protection, in particular to a coaxial broadband high-power protection module.
Background
With the development of electromagnetic pulse source technology, ultra-wideband radiation sources and high-power radiation sources are gradually emerging in the public field of view. The ultra-wideband radiation source and the high-power radiation source have high radiation power, the instantaneous radiation peak power exceeds 100MW, and the safety of military/civil information systems is seriously threatened. The antenna is used as a main port for receiving and transmitting electromagnetic waves and is an important channel for coupling strong electromagnetic energy, and the electromagnetic wave energy which is inrush from the antenna can bring fatal threats to sensitive devices such as low-noise amplifiers and mixers at the rear end of the antenna. The need for protection of the "front door" of the information system is becoming more and more stringent in response to high power radiation.
The existing receiving branch electromagnetic energy protection device is mainly an amplitude limiter, and the amplitude limiter can limit the amplitude of an output signal within a safety range.
However, with the higher energy of the spatial radiation field, the conventional high-power limiter is difficult to effectively respond, and cannot meet the requirement of strong electromagnetic protection.
Disclosure of Invention
Therefore, it is necessary to provide a coaxial broadband high-power protection module for effectively resisting the impact of strong electromagnetic energy and realizing the effective protection of the strong rf field of the "front door" of the information system.
A coaxial type broadband high-power protection module comprises: the device comprises an input port, an output port, a hollow shell, an inner core and a dielectric layer;
one end of the shell is connected with the input port, and the other end of the shell is connected with the output port; the medium layer is arranged on one cross section of the shell; the inner core is coaxial with the shell, one end of the inner core is connected with the input port, and the other end of the inner core penetrates through the center of the medium layer and then is connected with the output port;
and a diode is arranged on the dielectric layer, and the diode is electrically connected with the inner core and the shell.
In one embodiment, the dielectric layer comprises: the metal patch comprises a dielectric substrate, a metal patch and a metal ground, wherein the metal patch and the metal ground are arranged on the dielectric substrate;
the metal patch faces the input port, and the metal ground faces the output port;
the diode is arranged on the metal patch.
In one embodiment, the input port, the output port, the outer shell, the inner core, and the dielectric layer are all of a solid of revolution structure;
the metal patch comprises a plurality of strip-shaped metal strips, each metal strip is arranged in the radial direction of the medium substrate, one end of each metal strip is connected with the inner core, and the other end of each metal strip is connected with the outer shell;
the metal strips correspond to the diodes one to one, and each diode is arranged on the corresponding metal strip.
In one embodiment, the diodes are distributed rotationally symmetric about the inner core.
In one embodiment, the number of metal strips is four and forms a cross structure.
In one embodiment, the inner core comprises: the first section, the second section, the third section, the fourth section and the fifth section are sequentially connected end to end;
the first section is connected with the input port, the radius of the second section is gradually increased along the transmission direction of the signals, the third section is of a cylindrical structure, the radius of the fourth section is gradually decreased along the transmission direction of the signals, and the fifth section is connected with the output port.
In one embodiment, the input port and the output port are both implemented with 50 ohm impedance connections.
In one embodiment, the output port comprises: a first portion and a second portion;
the second part is sleeved on the outer side of the first part, and the top of the inner wall of the second part is connected with the bottom of the outer wall of the first part in an abutting mode.
In one embodiment, the metal strip is provided with a through hole penetrating through the dielectric substrate, and a metal layer is arranged on the wall of the through hole.
In one embodiment, the diode is a PIN diode, and the anode of the PIN diode is connected with the inner core and the cathode of the PIN diode is connected with the outer shell.
In the coaxial broadband high-power protection module, a dielectric layer is arranged on one cross section of a shell, a diode is arranged on the dielectric layer, and a plurality of diodes are connected in parallel; when a normal working signal (a signal flowing through the protection module when the equipment to be installed works normally) is transmitted into the protection module, the signal sequentially passes through the input port and the inner core and then reaches the PIN diode parallel array, and because signal energy cannot enable the PIN diode array to be conducted, the signal normally passes through the inner core and then is transmitted to the output port, and the loss of the working signal in the transmission process is small; when strong electromagnetic signals (signals which can damage sensitive components at the rear end of the protection module such as a low noise amplifier) flow into the protection module, the signals sequentially pass through the input port and the inner core and then reach the PIN diode parallel array, signal energy enables the PIN diode array to be conducted, most of the signals are reflected at the parallel PIN diode array, energy is discharged to the metal shell through the diode, only few signals normally transmit to the output port after passing through the inner core, and the withstand power of the whole protection module is greatly improved; the protection module in the embodiment has a high-frequency characteristic, can deal with high-frequency energy radiation of a space radiation field, effectively withstands the impact of strong electromagnetic energy, and realizes effective protection of a front door strong radio frequency field of an information system.
Drawings
FIG. 1 is a schematic perspective view of a coaxial broadband high-power protection module according to an embodiment;
FIG. 2 is a cross-sectional view of the coaxial broadband high-power protection module along the axial direction AA' in one embodiment;
FIG. 3 is a cross-sectional view of the coaxial broadband high power protection module along the cross-section, namely BB', in one embodiment;
FIG. 4 is a simulation diagram of the transmission characteristic curve of the coaxial broadband high-power protection module in one embodiment.
Reference numerals are as follows:
the structure comprises an input port 1, an output port 2, a shell 31, an inner core 32, a dielectric substrate 331, a metal patch 332, a metal ground 333, a diode 334 and a metal through hole 335.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality of groups" means at least two groups, e.g., two groups, three groups, etc., unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; the connection can be mechanical connection, electrical connection, physical connection or wireless communication connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, technical solutions between the various embodiments of the present application may be combined with each other, but it must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should be considered to be absent and not within the protection scope of the present application.
The present application provides a coaxial type broadband high-power protection module, as shown in fig. 1 to 3, in one embodiment, including: input port 1, output port 2, hollow shell 31, inner core 32 and the dielectric layer.
The input port 1 and the output port 2 are both connected to sensitive devices (i.e. devices that need to be protected).
One end of the housing 31 is connected to the input port 1, and the other end is connected to the output port 2, that is: the input port 1, the housing 31, and the output port 2 are connected in this order. As for the specific connection mode, it belongs to the prior art and is not described herein again.
The dielectric layer is provided on one cross section of the housing 31; preferably, the dielectric layer includes: a dielectric substrate 331, and a metal patch 332 and a metal ground 333 provided on the dielectric substrate 331; the metal patch 332 faces the input port 1 and the metal ground 333 faces the output port 2.
The inner core 32 is coaxial with the outer shell 31 and is made of solid material; one end of inner core 32 is connected to input port 1, and the other end is connected to output port 2 after passing through the center of the dielectric layer.
The metal patch 332 of the dielectric layer is provided with a diode 334, and the diode 334 is electrically connected with the inner core 32 and the shell 31; preferably, the diodes 334 are PIN diodes, the orientation of each diode being identical, for example: the positive pole (i.e., P pole) of the PIN diode is connected with the inner core, and the negative pole (i.e., N pole) is connected with the outer shell.
Need to explain: taking the direction from the input port to the output port as the transmission direction of the signal; the input port, the output port, the outer shell, and the inner core may all be made of a metallic material.
In the coaxial broadband high-power protection module, a dielectric layer is arranged on one cross section of a shell, a diode is arranged on the dielectric layer, and a plurality of diodes are connected in parallel; when a normal working signal (a signal flowing through the protection module when the equipment to be installed works normally) is transmitted into the protection module, the signal sequentially passes through the input port and the inner core and then reaches the PIN diode parallel array, and because the signal energy cannot conduct the PIN diode array, the signal normally transmits to the output port after passing through the inner core, and the loss of the working signal in the transmission process is small; when strong electromagnetic signals (signals which can damage sensitive components at the rear end of the protection module such as a low noise amplifier) flow into the protection module, the signals sequentially pass through the input port and the inner core and then reach the PIN diode parallel array, signal energy enables the PIN diode array to be conducted, most of the signals are reflected at the parallel PIN diode array, energy is discharged to the metal shell through the diode, only few signals normally transmit to the output port after passing through the inner core, and the withstand power of the whole protection module is greatly improved; the protection module in the embodiment has a high-frequency characteristic, can deal with high-frequency energy radiation of a space radiation field, effectively withstands the impact of strong electromagnetic energy, and realizes effective protection of a front door strong radio frequency field of an information system.
Preferably, the input port 1, the output port 2, the outer shell 31, the inner core 32 and the dielectric layer are all of a revolving body structure; the metal patch 332 includes a plurality of strip-shaped metal strips, each metal strip is disposed in the radial direction of the dielectric substrate 331, one end of each metal strip is connected to the inner core 32, and the other end is connected to the outer shell 31; the metal strips correspond to the diodes 334 one-to-one, and each diode is disposed on a corresponding metal strip.
In the embodiment, the number of the metal strips and the number of the diodes are in one-to-one correspondence, and one metal strip is arranged on each metal strip, but the number and the included angle of the metal strips and the diodes are not limited, and the metal strips and the diodes can be designed in detail according to protection objects in actual situations.
Further preferably, the diodes 334 are distributed with rotational symmetry about the inner core; for example: the number of metal strips (diodes) is 4-8, and the angle between adjacent metal strips (diodes) may be 120 °, 90 °, 60 °, or the like.
The PIN diode array which is rotationally symmetrical and connected in parallel is adopted in the embodiment, the withstand power of the protection module is obviously improved, the length or the width of the microstrip line is not increased, the length of the transmission line is not increased, the size and the volume of the protection module are effectively reduced, and the application range is expanded.
Still further preferably, the number of metal strips is four and constitutes a cross structure.
The diodes in the embodiment are distributed in central symmetry about the inner core, the number is proper, the influence on the insertion loss is small, the material consumption is small, and the processing and the assembly are convenient.
In one embodiment, inner core 32 comprises: the first section, the second section, the third section, the fourth section and the fifth section are sequentially connected end to end; the first section is connected with the input port 1, the radius of the second section is gradually increased along the transmission direction of the signals, the third section is of a cylindrical structure, the radius of the fourth section is gradually decreased along the transmission direction of the signals, and the fifth section is connected with the output port 2.
In the embodiment, the second section and the fourth section of the inner core are set to be gradually changed transmission structures, the metal inner core is gradually thickened, parallel connection PIN diode array arrangement is facilitated, in the maximum frequency range, the impedance is gradually changed, impedance matching with a port is better completed, the impedance of the installation position of the PIN diode can be reduced, the influence caused by the capacitance effect of the PIN diode is reduced, the reflection energy is reduced, the transmission energy is increased, the insertion loss in the working frequency band of the protection module is equivalently reduced, the tolerance power of the protection module is effectively improved (the power level is improved to dozens of to hundreds of watts), and the working frequency band and the working bandwidth of the protection module are increased (the working frequency band is improved to be more than 1GHz from hundreds of megabytes).
In one embodiment, 50 ohm impedance connections are used for both input port 1 and output port 2.
The 50 ohm impedance joint in this embodiment mainly realizes being connected with the external joint, and the microwave transmission system external joint impedance in the microwave field is 50 ohm usually, ensures that the impedance of protection module and joint matches, can effectively reduce the electromagnetic energy reflection of junction and port, realizes the maximize transmission of electromagnetic wave energy.
Preferably, the output port 2 comprises: a first portion and a second portion; the first part is of a cylindrical structure, and the second part is of a hollow cylindrical structure; the second part is sleeved outside the first part, and the top of the inner wall of the second part is connected with the bottom of the outer wall of the first part in an abutting mode.
The input port 1 includes: a third part and a fourth part; the third part is of a cylindrical structure, and the fourth part is of a hollow cylindrical structure; the fourth part is sleeved on the outer side of the third part, and the bottom of the inner wall of the fourth part is connected with the top of the outer wall of the third part in an abutting mode.
That is, the input port 1 and the output port 2 are identical in structure and are axisymmetric with respect to the central cross-sectional plane of the inner core 32.
A metallic ground 333 is provided on the bottom plane of the second portion; the first section of the metal inner core penetrates through the third part, the second section is arranged in the inner space of the fourth part and has a gap with the inner wall of the fourth part, the fourth section is arranged in the inner space of the second part and has a gap with the inner wall of the second part, and the fifth section penetrates through the first part.
Need to explain: the direction close to the housing is taken as the outer side, the direction close to the output port is taken as the top, and the direction far away from the output port is taken as the bottom.
In one embodiment, the metal strap has a through hole penetrating through the dielectric substrate 331, and a metal layer is disposed on the wall of the through hole to serve as a metal via 335 for grounding.
According to the coaxial broadband high-power protection module, when a normal working signal is transmitted into the protection module, the signal sequentially passes through the 50-ohm impedance connector of the input port, the first section, the second section and the third section of the inner core and then reaches the PIN diode parallel array in rotational symmetry, because signal energy cannot conduct the PIN diode array, the signal is normally transmitted to the output port after passing through the fourth section and the fifth section of the inner core, and the loss of the working signal in the transmission process is small; when strong electromagnetic signals flow into the protection module, the signals sequentially pass through the 50-ohm impedance connector of the input port, the first section, the second section and the third section of the inner core and then reach the PIN diode parallel array in rotational symmetry, signal energy enables the PIN diode array to be conducted, most of the signals are reflected at the PIN diode array in parallel, only few signals normally transmit to the output port after passing through the fourth section and the fifth section of the inner core, and the withstand power of the whole protection module is greatly improved; the protection module has high-frequency characteristics, can deal with high-frequency energy radiation of a space radiation field, effectively resists the impact of strong electromagnetic energy, and realizes effective protection of a front door of an information system; the withstand power of the protection module is obviously improved, and the size and the volume of the protection module are effectively reduced; the impedance of the installation position of the PIN diode is reduced, the influence caused by the capacitance effect of the PIN diode is reduced, the insertion loss in the working frequency band of the protection module is equivalently reduced, the tolerance power of the protection module is effectively improved, and the working frequency band and the working bandwidth of the protection module are increased; the impedance matching of the protection module and the connector is ensured, the electromagnetic energy reflection of the connection part and the port is effectively reduced, and the maximum transmission of the electromagnetic wave energy is realized.
As shown in the graph of the transmission characteristic curve simulation of fig. 4, when the PIN diode is not turned on (i.e., turned off), normal transmission is enabled, and when the PIN diode is turned on, electromagnetic energy cannot be transmitted.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A coaxial type broadband high-power protection module is characterized by comprising: the device comprises an input port, an output port, a hollow shell, an inner core and a dielectric layer;
one end of the shell is connected with the input port, and the other end of the shell is connected with the output port; the medium layer is arranged on one cross section of the shell; the inner core is coaxial with the shell, one end of the inner core is connected with the input port, and the other end of the inner core penetrates through the center of the medium layer and then is connected with the output port;
and a diode is arranged on the dielectric layer, and the diode is electrically connected with the inner core and the shell.
2. The coaxial broadband high-power protection module according to claim 1, wherein the dielectric layer comprises: the metal patch comprises a dielectric substrate, a metal patch and a metal ground, wherein the metal patch and the metal ground are arranged on the dielectric substrate;
the metal patch faces the input port, and the metal ground faces the output port;
the diode is arranged on the metal patch.
3. The coaxial broadband high-power protection module according to claim 2, wherein the input port, the output port, the housing, the inner core, and the dielectric layer are all of a solid of revolution structure;
the metal patch comprises a plurality of strip-shaped metal strips, each metal strip is arranged in the radial direction of the medium substrate, one end of each metal strip is connected with the inner core, and the other end of each metal strip is connected with the outer shell;
the metal strips correspond to the diodes one to one, and each diode is arranged on the corresponding metal strip.
4. The coaxial broadband high power protection module according to claim 3, wherein the diodes are distributed in rotational symmetry about the inner core.
5. The coaxial type broadband high power protection module according to claim 4, wherein the number of the metal strips is four, and a cross structure is formed.
6. The coaxial type broadband high power protection module according to any one of claims 1 to 5, wherein the inner core comprises: the first section, the second section, the third section, the fourth section and the fifth section are sequentially connected end to end;
the first section is connected with the input port, the radius of the second section is gradually increased along the transmission direction of the signals, the third section is of a cylindrical structure, the radius of the fourth section is gradually decreased along the transmission direction of the signals, and the fifth section is connected with the output port.
7. The coaxial broadband high power protection module according to any one of claims 1 to 5, wherein the input port and the output port both use 50 ohm impedance connections.
8. The coaxial type broadband high power protection module according to claim 7, wherein the output port comprises: a first portion and a second portion;
the second part is sleeved on the outer side of the first part, and the top of the inner wall of the second part is connected with the bottom of the outer wall of the first part in an abutting mode.
9. The coaxial broadband high-power protection module according to any one of claims 3 to 5, wherein the metal strip is provided with a through hole penetrating through the dielectric substrate, and a metal layer is provided on a hole wall of the through hole.
10. The coaxial broadband high-power protection module according to any one of claims 1 to 5, wherein the diode is a PIN diode, and an anode of the PIN diode is connected with the inner core and a cathode of the PIN diode is connected with the outer shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211318553.2A CN115458888B (en) | 2022-10-26 | 2022-10-26 | Coaxial broadband high-power protection module |
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| CN202211318553.2A CN115458888B (en) | 2022-10-26 | 2022-10-26 | Coaxial broadband high-power protection module |
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| CN115458888B CN115458888B (en) | 2024-04-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068051A (en) * | 2006-11-09 | 2007-11-07 | 中国科学院电子学研究所 | Stripline large power microwave amplitude limiter |
| US20100182108A1 (en) * | 2007-06-05 | 2010-07-22 | Misa Koreyasu | High frequency limiter |
| US20150002238A1 (en) * | 2013-06-27 | 2015-01-01 | Electronics And Telecommunications Research Institute | Stacked diode limiter |
| CN105305972A (en) * | 2015-11-20 | 2016-02-03 | 中国舰船研究设计中心 | Radio-frequency front-end electromagnetic pulse protection module |
| CN114639933A (en) * | 2022-05-23 | 2022-06-17 | 湖南雷远电子科技有限公司 | Broadband high-power protection module and device based on gradual change type transmission line |
| CN115020989A (en) * | 2022-08-05 | 2022-09-06 | 盛纬伦(深圳)通信技术有限公司 | Chiral metamaterial unit and array capable of tuning linear circular polarization conversion |
-
2022
- 2022-10-26 CN CN202211318553.2A patent/CN115458888B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068051A (en) * | 2006-11-09 | 2007-11-07 | 中国科学院电子学研究所 | Stripline large power microwave amplitude limiter |
| US20100182108A1 (en) * | 2007-06-05 | 2010-07-22 | Misa Koreyasu | High frequency limiter |
| US20150002238A1 (en) * | 2013-06-27 | 2015-01-01 | Electronics And Telecommunications Research Institute | Stacked diode limiter |
| CN105305972A (en) * | 2015-11-20 | 2016-02-03 | 中国舰船研究设计中心 | Radio-frequency front-end electromagnetic pulse protection module |
| CN114639933A (en) * | 2022-05-23 | 2022-06-17 | 湖南雷远电子科技有限公司 | Broadband high-power protection module and device based on gradual change type transmission line |
| CN115020989A (en) * | 2022-08-05 | 2022-09-06 | 盛纬伦(深圳)通信技术有限公司 | Chiral metamaterial unit and array capable of tuning linear circular polarization conversion |
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