CN115458888B - Coaxial broadband high-power protection module - Google Patents
Coaxial broadband high-power protection module Download PDFInfo
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- CN115458888B CN115458888B CN202211318553.2A CN202211318553A CN115458888B CN 115458888 B CN115458888 B CN 115458888B CN 202211318553 A CN202211318553 A CN 202211318553A CN 115458888 B CN115458888 B CN 115458888B
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- 239000002184 metal Substances 0.000 claims abstract description 62
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000008054 signal transmission Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 description 13
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
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- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/22—Attenuating devices
- H01P1/225—Coaxial attenuators
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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 medium 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 dielectric 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 passes through the center of the dielectric layer and then is connected with the output port; a diode is arranged on the dielectric layer and is electrically connected with the inner core and the outer shell; the dielectric layer comprises: a dielectric substrate, a metal patch and a metal ground 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. The application can effectively resist the impact of strong electromagnetic energy and realize the effective protection of the strong radio frequency field of the front door of the information system.
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 appearing in public views. The ultra-wideband radiation source, the high-power radiation source and the like have high radiation power, the instantaneous radiation peak power exceeds 100MW, and the security of a military/civil information system is seriously threatened. The antenna is used as a main port for receiving and transmitting electromagnetic waves, is an important channel for coupling strong electromagnetic energy, and the electromagnetic energy rushing in from the antenna can cause fatal threat to sensitive devices such as low-noise amplifier, mixer and the like at the rear end of the antenna. The protection requirement of the front door of the information system is more and more urgent under high-power irradiation.
The existing electromagnetic energy protection device of the receiving branch is mainly a limiter, and the limiter can limit the amplitude of an output signal within a safe range.
However, as the energy of the space radiation field is higher, the traditional high-power limiter is difficult to effectively cope with, and cannot meet the requirement of strong electromagnetic protection.
Disclosure of Invention
Based on the above, it is necessary to provide a coaxial broadband high-power protection module, which can effectively resist the impact of strong electromagnetic energy and realize the effective protection of the strong radio frequency field of the front door of the information system.
A coaxial broadband high-power protection module, comprising: the device comprises an input port, an output port, a hollow shell, an inner core and a medium 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 dielectric layer is arranged on one cross section of the shell; the inner core is coaxial with the outer 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 dielectric layer and then is connected with the output port;
and a diode is arranged on the dielectric layer and is electrically connected with the inner core and the outer shell.
In one embodiment, the dielectric layer includes: a dielectric substrate, and a metal patch and a metal ground 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 solid of revolution structures;
The metal patch comprises a plurality of strip-shaped metal strips, each metal strip is arranged on the radial direction of the dielectric 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 are in one-to-one correspondence with the diodes, and each diode is arranged on the corresponding metal strip.
In one embodiment, the diodes are 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 connected end to end in sequence;
The first section is connected with the input port, the radius of the second section is gradually increased along the signal transmission direction, the third section is of a cylindrical structure, the radius of the fourth section is gradually reduced along the signal transmission direction, and the fifth section is connected with the output port.
In one embodiment, the input port and the output port each employ a 50 ohm impedance connector.
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 the wall of the through hole is provided with a metal layer.
In one embodiment, the diode is a PIN diode, an anode of the PIN diode is connected to the inner core, and a cathode of the PIN diode is connected to the outer shell.
In the coaxial broadband high-power protection module, a dielectric layer is arranged on one cross section of the shell, and 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 the PIN diode array cannot be conducted due to signal energy, so that the signal is normally transmitted 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) rush into the protection module, the signals sequentially pass through an input port and an inner core and then reach a PIN diode parallel array, the PIN diode array is conducted by signal energy, most of the signals are reflected at the position of the parallel PIN diode array, so that the energy is discharged to a metal shell through the diodes, only a very small part of the signals are normally transmitted to an output port after passing through the inner core, and the tolerance power of the whole protection module is greatly improved; the protection module in the embodiment has high-frequency characteristics, can cope with high-frequency energy radiation of a space radiation field, effectively resists 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 a coaxial broadband high-power protection module along the axial direction, or AA', in one embodiment;
FIG. 3 is a cross-sectional view of a coaxial broadband high-power protection module along cross-section BB' in one embodiment;
Fig. 4 is a transmission characteristic simulation diagram of a coaxial broadband high-power protection module in one embodiment.
Reference numerals:
Input port 1, output port 2, outer shell 31, inner core 32, dielectric substrate 331, metal patch 332, metal ground 333, diode 334, metal via 335.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality of sets" means at least two sets, for example, two sets, three sets, etc., unless specifically defined otherwise.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; the device can be mechanically connected, electrically connected, physically connected or wirelessly connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present application may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present application.
The present application provides a coaxial broadband high-power protection module, as shown in fig. 1 to 3, in one embodiment, the module comprises: input port 1, output port 2, hollow outer shell 31, inner core 32, and dielectric layer.
Both the input port 1 and the output port 2 are connected to sensitive devices, i.e. devices that need protection.
One end of the housing 31 is connected to the input port 1, and the other end is connected to the output port 2, namely: the input port 1, the housing 31 and the output port 2 are connected in this order. The specific connection method belongs to the prior art, and is not described herein.
The dielectric layer is provided on one cross section of the housing 31; preferably, the dielectric layer includes: a dielectric substrate 331, a metal patch 332 and a metal ground 333 provided on the dielectric substrate 331; the metal patch 332 is oriented towards the input port 1 and the metal ground 333 is oriented towards the output port 2.
The inner core 32 is coaxial with the outer shell 31 and is made of a solid material; one end of the inner core 32 is connected to the input port 1, and the other end is connected to the output port 2 after passing through the center of the dielectric layer.
A diode 334 is arranged on the metal patch 332 of the dielectric layer, and the diode 334 is electrically connected with the inner core 32 and the outer shell 31; preferably, the diodes 334 are PIN diodes, each of which is oriented in a uniform manner, for example: the positive pole (i.e., P pole) of the PIN diode is connected to the inner core and the negative pole (i.e., N pole) is connected to the outer shell.
It is necessary to explain that: 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 the shell, and 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 the PIN diode array cannot be conducted due to signal energy, so that the signal is normally transmitted 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) rush into the protection module, the signals sequentially pass through an input port and an inner core and then reach a PIN diode parallel array, the PIN diode array is conducted by signal energy, most of the signals are reflected at the position of the parallel PIN diode array, so that the energy is discharged to a metal shell through the diodes, only a very small part of the signals are normally transmitted to an output port after passing through the inner core, and the tolerance power of the whole protection module is greatly improved; the protection module in the embodiment has high-frequency characteristics, can cope with high-frequency energy radiation of a space radiation field, effectively resists 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 in a revolving structure; the metal patch 332 includes a plurality of strip-shaped metal strips, each of which is disposed in a radial direction of the dielectric substrate 331, one end of the metal strip being connected to the inner core 32, and the other end being connected to the outer shell 31; the metal strips are in one-to-one correspondence with the diodes 334, each of which is provided on a corresponding metal strip.
In this embodiment, the number of metal strips and diodes are in one-to-one correspondence, and one metal strip is provided for each metal strip, but the number and the included angle of the metal strips and the diodes are not limited, and can be designed in detail according to the protection object in the actual situation.
Further preferably, the diodes 334 are rotationally symmetrically distributed 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 ° or 60 °, etc.
The PIN diode arrays which are rotationally symmetrical and connected in parallel are adopted in the embodiment, so that the tolerance power of the protection module is remarkably 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 more preferably, the number of metal strips is four and constitutes a cross structure.
The diodes in the embodiment are distributed in a central symmetry mode about the inner core, are suitable in quantity, small in influence on insertion loss, small in material consumption and convenient to process and assemble.
In one embodiment, the inner core 32 comprises: the first section, the second section, the third section, the fourth section and the fifth section are connected end to end in sequence; the first section is connected with the input port 1, the radius of the second section is gradually increased along the signal transmission direction, the third section is in a cylindrical structure, the radius of the fourth section is gradually reduced along the signal transmission direction, and the fifth section is connected with the output port 2.
According to 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 PIN diode array arrangement is facilitated, impedance is gradually changed in the maximum frequency range, impedance matching with a port is better completed, impedance of the installation position of the PIN diode can be reduced, influence caused by capacitance effect of the PIN diode is reduced, reflection energy is reduced, transmission energy is increased, insertion loss in an operating frequency band of a protection module is equivalently reduced, tolerance power of the protection module is effectively improved (from a watt level to tens to hundreds of watt level), and operating frequency band and operating bandwidth of the protection module are increased (from hundreds of megawatts to more than 1 GHz).
In one embodiment, both input port 1 and output port 2 employ 50 ohm impedance connectors.
The 50 ohm impedance connector in the embodiment is mainly connected with an external connector, the impedance of the external connector of a microwave transmission system in the microwave field is 50 ohms, impedance matching of the protection module and the connector is ensured, electromagnetic energy reflection at the connection position and the port can be effectively reduced, and maximum transmission of electromagnetic energy is realized.
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 portion and a fourth portion; 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 axisymmetric about the center cross-section of the inner core 32.
A metal ground 333 is provided on the bottom plane of the second portion; the first section of the metal inner core passes through the third part, the second section is arranged in the inner space of the fourth part and is spaced from the inner wall of the fourth part, the fourth section is arranged in the inner space of the second part and is provided with a gap with the inner wall of the second part, and the fifth section passes through the first part.
It is necessary to explain that: the direction of the output port is the top, and the direction of the output port is the bottom.
In one embodiment, the metal strap is provided with a through hole penetrating through the dielectric substrate 331, and the wall of the through hole is provided with a metal layer, so as to be used as a metal via 335 to realize grounding.
When the 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 rotationally symmetrical PIN diode parallel array, the PIN diode array cannot be conducted by the signal energy, 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 rotationally symmetrical PIN diode parallel array, the PIN diode array is conducted by the signal energy, most of the signals are reflected at the parallel PIN diode array, only a very small part of the signals are normally transmitted to the output port after passing through the fourth section and the fifth section of the inner core, and the tolerance power of the whole protection module is greatly improved; the protection module has high-frequency characteristics, can cope with high-frequency energy radiation of a space radiation field, effectively resists impact of strong electromagnetic energy, and realizes effective protection of a front door of an information system; the tolerance 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 at the connection part and the port is effectively reduced, and the maximum transmission of electromagnetic wave energy is realized.
As shown in the transmission characteristic simulation diagram 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 is not transmitted.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (7)
1. A coaxial broadband high-power protection module, comprising: the device comprises an input port, an output port, a hollow shell, an inner core and a medium 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 dielectric layer is arranged on one cross section of the shell; the inner core is coaxial with the outer 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 dielectric layer and then is connected with the output port;
a diode is arranged on the dielectric layer and is electrically connected with the inner core and the outer shell; the diodes are distributed in a rotationally symmetrical manner about the inner core, a PIN diode array which is rotationally symmetrical and parallel is adopted, and the diodes are distributed in a central symmetrical manner about the inner core;
The inner core includes: the first section, the second section, the third section, the fourth section and the fifth section are connected end to end in sequence; the first section is connected with the input port, the radius of the second section is gradually increased along the signal transmission direction, the third section is in a cylindrical structure, the radius of the fourth section is gradually reduced along the signal transmission direction, and the fifth section is connected with the output port; 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 tolerance power of the protection module is improved, the working frequency band and the working bandwidth of the protection module are increased, and the working bandwidth is increased to be more than 1 GHz;
the dielectric layer comprises: a dielectric substrate and a metal patch arranged on the dielectric substrate; the metal patch faces the input port; the diode is arranged on the metal patch;
the input port, the output port, the outer shell, the inner core and the medium layer are all of a revolving structure;
The metal patch comprises a plurality of strip-shaped metal strips, each metal strip is arranged on the radial direction of the dielectric 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 are in one-to-one correspondence with the diodes, and each diode is arranged on the corresponding metal strip.
2. The coaxial broadband high-power protection module of claim 1, wherein the dielectric layer further comprises: a metal land provided on the dielectric substrate;
the metallic ground is oriented toward the output port.
3. The coaxial broadband high-power protection module according to claim 1 or 2, wherein the number of metal strips is four and constitutes a cross structure.
4. The coaxial broadband high-power protection module according to claim 1 or 2, wherein the input port and the output port each employ a 50 ohm impedance connector.
5. The coaxial broadband high-power protection module according to claim 1 or 2, 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.
6. The coaxial broadband high-power protection module according to claim 1 or 2, wherein the metal strip is provided with a through hole penetrating through the dielectric substrate, and a metal layer is arranged on a wall of the through hole.
7. The coaxial broadband high-power protection module according to claim 1 or 2, wherein the diode is a PIN diode, 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.
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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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| 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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| CN115458888B true CN115458888B (en) | 2024-04-26 |
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Citations (4)
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149893A1 (en) * | 2007-06-05 | 2008-12-11 | Furuno Electric Co., Ltd. | High-frequency limiter |
| KR101410765B1 (en) * | 2013-06-27 | 2014-06-24 | 한국전자통신연구원 | Stacking diode limiter |
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2022
- 2022-10-26 CN CN202211318553.2A patent/CN115458888B/en active Active
Patent Citations (4)
| 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 |
| 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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