CN210470172U - Wire array type radio frequency electromagnetic shielding window - Google Patents
Wire array type radio frequency electromagnetic shielding window Download PDFInfo
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- CN210470172U CN210470172U CN201921284593.3U CN201921284593U CN210470172U CN 210470172 U CN210470172 U CN 210470172U CN 201921284593 U CN201921284593 U CN 201921284593U CN 210470172 U CN210470172 U CN 210470172U
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Abstract
The utility model discloses a wire array formula radio frequency electromagnetic shield window, the shielding window includes: a wire array and at least one conductor frame; the wire array is a longitudinal wire array and comprises a plurality of conductor wires, the conductor wires are laid along a preset direction and according to the density requirement to form the wire array, one end of each conductor wire is connected with the conductor frame, and the other end of each conductor wire extends along the preset direction and then is connected with the same conductor frame or another conductor frame; the preset direction is an electric field direction capable of generating electromagnetic interference on the detector or a predetermined electric field direction needing important shielding; the utility model provides a shielding window has realized having good transmissivity when shielding effect.
Description
Technical Field
The utility model relates to an electromagnetic shield technical field specifically, relates to a silk matrix formula radio frequency electromagnetic shield window for detector.
Background
In the detection of infrared/visible/ultraviolet/X-ray and particle flow pulses, a wire mesh is often used as a window in order to shield external electromagnetic interference or form an electron collecting layer and allow the detected light and particle flow to pass through. For example, GD-5005 ultrafast vacuum phototube (panhong, et al, 2009) and vacuum X-ray diode (royal red bin, et al, 1994) all use a metal mesh placed in parallel with the cathode as the anode to collect electrons. Because the metal net has a hollow structure, most of visible/ultraviolet rays and soft X rays of the detector can penetrate through the metal net; meanwhile, the metal net has the radio frequency electromagnetic shielding function, so that the capacity of collecting electric signals generated by electrons is approximately equal to the characteristic of placing a non-hollow metal sheet to absorb the electrons. The existing metal mesh adopts a square or hexagonal grid structure, the electromagnetic field direction acting on a detector is not distinguished, and an optimization space is provided in the aspect of transmittance.
SUMMERY OF THE UTILITY MODEL
The utility model provides a silk matrix formula radio frequency electromagnetic shield window has realized having good transmissivity when shielding effect.
The inventor researches and discovers that: in the case of using the metal mesh as an electrode and in many cases of using the metal mesh to shield the external radio frequency electromagnetic interference of the detector, it can be proved that only one direction of electric field can act on the detector at any position near the boundary of the metal mesh, and the electric field in the direction perpendicular to the direction can not affect the detector. The direction is generally, but not limited to, the direction of an electric field generated on the surface of the shielding net by a feed-in signal when a radio frequency electromagnetic signal is fed back from some two separated conductors or a detector signal output end inside the detector. Under the above-mentioned situation, all can adopt the utility model discloses a silk matrix formula electromagnetic shield window that the patent relates to. The wire array type electromagnetic shielding window is provided with the wire conductors selectively arranged along one direction, and compared with the traditional shielding net, the wire array type electromagnetic shielding window is easy to achieve higher transmittance. Of course, to achieve a higher transmission rate than conventional screens, the application scope of the present invention is not limited to situations where only one direction of the electric field affects the detector strictly. In some cases, although the electric fields in different directions can affect the detector, the wire array type shielding net related to the utility model can also be used because the influence of one direction is dominant. In principle, it is possible to superimpose a thinner shielding mesh from the wire-matrix shielding mesh while shielding the electromagnetic fields that produce the primary and secondary effects. Obviously, the superposition can also be achieved by integrating two shielding meshes.
For realizing the utility model discloses the purpose, this application provides a silk matrix formula radio frequency electromagnetic shield window for detector, the shield window includes:
a wire array and at least one conductor frame; the wire array is a longitudinal wire array and comprises a plurality of conductor wires, the conductor wires are laid along a preset direction and according to the density requirement to form the wire array, one end of each conductor wire is connected with the conductor frame, and the other end of each conductor wire extends along the preset direction and then is connected with the same conductor frame or another conductor frame; the preset direction is an electric field direction capable of generating electromagnetic interference on the detector or a predetermined electric field direction needing important shielding; the electromagnetic interference on the detector is that a radio frequency signal is coupled between two separated conductors in the detector or the output end of the detector to generate influence, an electromagnetic field generated by the radio frequency electromagnetic signal reversely fed into the separated conductors or the output end of the detector at any position of the inner surface of the shielding window is a linearly polarized wave and has a specific electric field direction, a component of the electromagnetic field entering the shielding window, which is the same as the linear polarization direction, can be coupled to key parts such as a bias circuit in the detector or directly coupled to the output end to generate influence on the output result of the detector, and the electric field direction capable of being coupled to the key parts in the detector or the output end is the direction capable of generating the electromagnetic interference on the detector.
The conductor wires are distributed along the preset direction and approximately paved on the shielding window, and the density of the conductor wires is jointly determined by the influence of the electromagnetic field at the position on the detector and the shielding requirement. In the case that the density of the wires in the shielding window needs to be adjusted, the shielding window further comprises a transverse conductor which is lapped with the longitudinal wire array and is used for adjusting the density of the wires. The distribution and positional relationship of the transverse conductors is determined by the requirements for adjusting the filament density, and the position and distribution of the conductor borders is determined by the position and distribution of the edges of the openings on the detector through which the light or particle flow is required to pass.
The electromagnetic shielding window may have a light-transmitting substrate (when applied to an optical detector), and the shielding window may be laid flat on the substrate or may have no substrate. When the thickness of the window is ignored, the window is approximately a single-connected or multi-connected geometric surface. The shielding window has one or more conductor rims. When the window surface is a single-connection area, the number of the frames is 1; when the window surface is a complex communication area, the number of the frames is more than 1. The frames are distributed at the edge of the window, and the topological structure of each frame is a complete ring. The frame mainly serves to connect with the shield conductor outside the shield window. Without the substrate, the bezel also serves as a support.
Where for different kinds of optical or particle flow detectors the external electromagnetic field may in principle interfere by a number of mechanisms. Taking the case that the detector has an output end, and the electromagnetic interference mainly takes the situation that the radio frequency signal is coupled to the output end of the detector to generate influence as an example, as long as the non-linear transmission phenomenon and the birefringence phenomenon do not exist in the detector, the radio frequency electromagnetic signal reversely fed from the output end of the detector generates an electromagnetic field at any position of the inner surface of the shielding window as a linearly polarized wave, and the electromagnetic field has a specific electric field direction. According to the reciprocity theorem of electromagnetic transmission, if the shielding window is defective (e.g. hollowed out or opened), only the component of the electromagnetic field entering the shielding window from the defective position with the same linear polarization direction can be coupled to the output end, but not in the vertical direction. In this single case, the direction of the electric field that can be coupled to the output terminal is the direction in which the electromagnetic interference is generated, corresponding to any position on the shielding window. In the case where electromagnetic interference affects the detector by another mechanism (for example, changing the internal voltage of the detector), there are also cases where only one directional component of the electromagnetic field at any position can be coupled to the affected part. When the influence of the electromagnetic interference on the detector is mainly caused by one output end or one mechanism, or although a plurality of output ends or a plurality of mechanisms exist and the influence is equivalent, the electromagnetic field influencing each output end or each mechanism at any position has the same or approximately the same direction, only the influencing direction can be selectively shielded. The above-mentioned direction according to influence definite or artificial approximate selection all can regard as the design the utility model discloses a preset direction.
Preferably, the shielding window further includes at least one transverse conductor, one end of the conductor wire is connected to the conductor frame or the transverse conductor, and the other end of the conductor wire extends along the preset direction and then is connected to the same conductor frame, or is connected to another conductor frame, or is connected to the transverse conductor.
Preferably, the conductor frame is connected to the shield conductor outside the shield window.
Preferably, the transverse conductor is a strip-shaped or ring-shaped conductor, N conductor wires are lapped on one side of the transverse conductor, M conductor wires are lapped on the other side of the transverse conductor, M and N are integers, and M is larger than N. Taking a plane circular shielding window as an example, the preferred transverse conductor is annular, and the two sides are respectively the outer side and the inner side; in the case of a conical shielding window, the preferred transverse conductor is annular.
Preferably, the transverse conductor is a strip-shaped or ring-shaped conductor, P conductor wires are lapped on one side of the transverse conductor, Q conductor wires are lapped on the other side of the transverse conductor, P and Q are integers, and P is larger than Q.
Preferably, the transverse conductor is an annular conductor, the plurality of conductor wires are lapped on the annular conductor from the outside of the annular conductor, and no conductor wire is lapped on the annular conductor inside the annular conductor.
Preferably, the shield window jamb is brought into ohmic contact with the surrounding conductor by crimping or soldering.
Preferably, the surrounding conductor is a conductor of a housing of the probe for shielding electromagnetic interference, or a conductor used as an electrode circuit of the probe.
Preferably, when the conductor frame is a plurality of frames, each frame forms ohmic contact with the surrounding conductor by means of crimping or welding. Wherein, the utility model discloses in the silk battle array that is formed by more than or equal to 1 conductor silk is connected with the frame directly, along or approximate along can taking place the electric field component direction distribution that influences to the detector in the window face, terminate until reaching the frame, perhaps reach the position that the silk number needs increase or reduce, adjust the silk number through the electric field component direction perpendicular with can influence the detector or approximate vertically transverse conductor overlap joint, continue arranging after the adjustment, perhaps reach the electric field component direction that influences the detector and assemble near position a bit, through being in the same place with the transverse conductor overlap joint, the silk number becomes zero.
Wherein the transverse conductor is always a conductor of limited length or a loop, which is oriented perpendicular or approximately perpendicular to the direction of the electric field component that can influence the detector. When the number of the wires needs to be increased, the N wires (N is more than or equal to 1) reach the position of the transverse conductor, the N wires are terminated, the tail part is lapped on the transverse conductor from the same side, one end of each wire which is more than the N wires is lapped on the other side of the transverse conductor, and the wires are continuously arranged along or approximately along the direction of the electric field component capable of influencing the detector. When the number of wires needs to be reduced, M wires (M is more than or equal to 2) reach the position of the transverse conductor, the wire ends, the tail part is lapped on the transverse conductor from the same side, one end of the wire is lapped on the other side of the transverse conductor and is continuously arranged along or approximately along the direction of the electric field component capable of influencing the detector. When the flow field formed by the direction of the electric field component capable of influencing the detector converges to a point, the transverse conductor is a ring surrounding the point, and more than or equal to two wires reach the transverse conductor from the outside of the transverse conductor, terminate and overlap the transverse conductor.
Wherein, the utility model provides a shielding window's application method does: the shielding window is installed at the position where the detector needs to pass light (or particle flow). The shield window orientation and position are adjusted so that the filament position is along or near along the direction of the electric field that can affect the detector. The shielding window frame and the surrounding conductor form ohmic contact in a crimping or welding mode. The surrounding conductor may be a conductor of the housing of the probe for shielding electromagnetic interference, or a conductor used as an electrode circuit of the probe.
One or more technical solutions provided by the present application have at least the following technical effects or advantages:
the utility model adopts the conductor frame, so that ohmic connection can be formed between the conductor frame and the conductor needing to be provided with the shielding window, thereby achieving the purpose of shielding or serving as a shielding electrode;
the utility model adopts the structure that the electromagnetic interference of the radio frequency which affects the detector can be shielded or the purpose of using as a shielding electrode can be achieved because the electromagnetic interference is distributed along or approximately along the direction of the electric field component which can affect the detector;
the utility model adopts the mode of transverse conductor lapping to adjust the number of the wires, so that higher shielding indexes can be achieved under the condition that the wires and the transverse conductors have relatively less shielding to the detected light/particle flow;
the utility model discloses because adopt annular transverse conductor to reduce near electric field direction convergent point's silk number to zero, so can reach higher shielding index under silk and transverse conductor to sheltering from the relatively less situation by survey light/particle flow.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic diagram of a lapping mode showing a case where wires need to be encrypted when viewed from left to right, and a schematic diagram of a lapping mode showing a case where the number of wires needs to be reduced when viewed from right to left;
FIG. 3 is a schematic diagram of the lapping mode in which the number of filaments is reduced to zero under the condition that the electric field directions of the detector can be influenced to converge to one point;
in the figure, 1-schematic diagram of the streamlines formed by the direction of the electric field component that can affect the detector; 2-convergence point of the electric field component direction; 3-conductor frame of the shield window; 4-conductor wires distributed in the shielding window; 5-transverse conductors for varying the number of filaments; 6-the position corresponding to the convergent point of the electric field component direction in the shielding window; 7-relatively thin filaments; 8-relatively dense filaments; 9-transverse conductor; 10-filament count needs to be reduced to zero; 11-transverse conductors in the case where the number of filaments needs to be reduced to zero; 12-the number of filaments needs to be reduced to the position of the convergence point of the electric field component direction in the zero condition.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring to fig. 1-3, an embodiment of the present invention provides a wire-matrix radio frequency electromagnetic shielding window. The electromagnetic shielding window may or may not have a light transmissive substrate (when applied to an optical detector). When a substrate is arranged, the shielding window is flatly laid and fixed on the substrate. When the thickness of the window is ignored, the window is approximately a single-connected or multi-connected geometric surface.
The shielding window is provided with one or more conductor frames, the frames mainly play a role of connecting with a shielding conductor outside the shielding window, the topological structure of each frame is a complete ring, the position distribution of the frames is determined by the position of the edge of a reserved opening of an external shielding conductor for installing the shielding window, the size and the shape of the frame are equivalent to those of the opening edge, and the reserved opening is usually determined by the requirement of transmitting light rays or particle flow. The frame of the shielding window and the external shielding conductor form ohmic contact connection in a crimping or welding mode, and the shielding window seals or approximately seals the reserved opening of the external conductor during connection. In order to close the preformed opening, the topology of the window is determined by the topology of the preformed opening. The frame is positioned at the edge of the geometric surface where the shielding window is positioned, so when the window surface is a single-connection area, the number of the frames is 1; when the window surface is a complex communication area, the number of the frames is more than 1. Without the substrate, the bezel also serves as a support.
The embodiment of the utility model provides an in, the silk battle array edge connection who plays shielding effect and logical light effect simultaneously is on the conductor frame to approximately fill up shielding window place geometric surface. And the filament array comprises one or two parts. The first part is necessary, and the first part is a longitudinal filament array distributed along the direction of an electric field component capable of influencing the detector; the second part is a transverse conductor for varying filament density as required.
The longitudinal wire array is composed of more than or equal to 1 conductor wire, and one end (called as head part herein) of the longitudinal wire array is connected with the frame. The distribution of the conductor wires is uniquely determined by the direction of the conductor wires and the initial wire spacing, except that the first wire can be connected with any position of the frame. Each filament is distributed in the window plane along or approximately along the direction of the electric field component that can influence the detector. The initial separation of the conductor wires from one another is dependent on the magnitude of the influence of the electromagnetic field at the initial location and the shielding requirements. The larger the influence, the higher the shielding requirement and the denser the filaments; and vice versa.
In an embodiment of the invention, the other end of the conductor wire (herein called tail) reaches another position of the same frame or a different frame, ends and is connected to the frame. Alternatively, the filament density of the filament array comprising the second partial transverse conductor portion may need to be adjusted in the presence of one or both of the following conditions. A transverse conductor is a conductor that is perpendicular or nearly perpendicular to the direction of the electric field component that can affect the detector. The filaments of the longitudinal filament array are overlapped with the transverse conductors to change the filament number, so that the filament density is changed. The transverse conductor is always a conductor of limited length or a loop. Except the situation that the number of the wires is changed into zero, the wires with the changed number of the wires are continuously arranged along or approximately along the direction of the electric field component capable of influencing the detector, are not adjusted again through the number of the wires or are adjusted again, or are adjusted again through the number of the wires for multiple times, reach the frame and overlap the tail part on the frame. The conditions include: the distance between the streamlines where the direction of the electric field component of the detector can be influenced is changed under the first condition, and the influence of the interference electric field on the detector is changed under the second condition at different positions along the filament direction.
The above-described lap joint with the transverse conductor is divided into three cases. Firstly, the filament density needs to be high; secondly, the filament density needs to be lowered; the filament density needs to become zero. When the wire density needs to be high, the wire tails of N (N is more than or equal to 1) wires are lapped on the transverse conductor from the same side, and then the wire heads of more than N wires are lapped on the transverse conductor from the other side, and the wire tails are continuously arranged along or approximately along the direction of the electric field component capable of influencing the detector. When the wire density needs to be lowered, the wire tails of the M (M is more than or equal to 2) wires are lapped on the transverse conductor from the same side, and then the wire heads of the M wires are lapped on the transverse conductor from the other side, and the wire heads are continuously arranged along or approximately along the direction of the electric field component capable of influencing the detector. When the flow field formed by the direction of the electric field component that can affect the detector converges to a point, there will be a situation in the vicinity of this point where the filament density needs to become zero. In this case, the transverse conductor is a loop surrounding the point, the filament array up to the transverse conductor comprises at least two filaments, the filament tails of both filaments bordering the loop from outside the loop. The interior of the ring is no longer wired.
The utility model provides a shielding window application method does: the shielding window is mounted in an opening position where the detector needs to be reserved on the shell or the electrode conductor through light (or through particle flow). The shield window orientation and position are adjusted so that the filament position is along or near along the direction of the electric field that can affect the detector. The shielding window frame and the surrounding conductor form ohmic contact in a crimping or welding mode. The surrounding conductor may be a conductor of the housing of the probe for shielding electromagnetic interference, or a conductor used as an electrode circuit of the probe.
Arranging 3 at the geometric boundary of the detector needing to use the shielding window; then, one end of 4 is lapped on 3, 4 is arranged along or approximately along the direction of the electric field component influencing the detector, until 3 or the number of filaments is reached and needs to be changed; in case 3 is reached, 4 terminates and bridges the other end to 3; in the case of the number of filaments needing to be increased, 7 reaches the position needing to be increased, 7 is terminated and the tail is lapped on one side of 9, one end of 8 is lapped on the other side of 9, and 8 continues to be arranged along or approximately along the direction of the electric field component influencing the detector; in the case of a reduction in the number of filaments, 8 reaches the position to be reduced, 8 is terminated and the tail is lapped on one side of 9, one end of 7 is lapped on the other side of 9, 7 continues to be arranged along or approximately along the direction of the electric field component affecting the detector; when the direction of the electric field component affecting the detector converges to a point, 10 reaches to the vicinity of 12, 10 is terminated and its tail is lapped on 11 from the periphery of 11. During the arrangement of 4, either 3 is reached, terminated and lapped on 3; or when the number of the filaments needs to be increased or decreased, the filaments are continuously arranged after being adjusted; or the arrangement is finished in case the number of filaments needs to become zero.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A wire-matrix radio frequency electromagnetic shielding window, the shielding window comprising:
a wire array and at least one conductor frame; the wire array is a longitudinal wire array and comprises a plurality of conductor wires, the conductor wires are laid along a preset direction and according to the density requirement to form the wire array, one end of each conductor wire is connected with the conductor frame, and the other end of each conductor wire extends along the preset direction and then is connected with the same conductor frame or another conductor frame; the preset direction is an electric field direction capable of generating electromagnetic interference on the detector or a predetermined electric field direction needing important shielding; the electromagnetic interference on the detector is that a radio frequency signal is coupled between two separated conductors in the detector or the output end of the detector is influenced, an electromagnetic field generated by the radio frequency electromagnetic signal reversely fed into the separated conductors or the output end of the detector at any position of the inner surface of the shielding window is a linearly polarized wave and has a specific electric field direction, a component of the electromagnetic field entering the shielding window, which is the same as the linear polarization direction, can be coupled into the detector or the output end, and the direction of the electric field which can be coupled into the detector or the output end is the direction in which the electromagnetic interference can be generated on the detector.
2. The wire-array radio frequency electromagnetic shielding window according to claim 1, wherein the shielding window further comprises at least one transverse conductor, one end of the conductor wire is connected to the conductor frame or the transverse conductor, and the other end of the conductor wire is connected to the same conductor frame, or to another conductor frame, or to the transverse conductor after extending along the predetermined direction.
3. The wire-matrix radio-frequency electromagnetic shielding window according to claim 1 or 2, wherein the shielding window further comprises a substrate, and the shielding window is tiled and fixed on the substrate.
4. The wire-array radio frequency electromagnetic shielding window according to claim 1 or 2, wherein the conductor frame is connected to the shielding conductor outside the shielding window.
5. The wire-matrix radio-frequency electromagnetic shielding window according to claim 2, wherein the transverse conductors are strip-shaped or ring-shaped conductors, N conductor wires are lapped on one side of the transverse conductors, M conductor wires are lapped on the other side of the transverse conductors, M and N are integers, and M is greater than N.
6. The wire-matrix radio-frequency electromagnetic shielding window according to claim 2, wherein the transverse conductors are strip-shaped or ring-shaped conductors, P conductor wires are lapped on one side of the transverse conductors, Q conductor wires are lapped on the other side of the transverse conductors, P and Q are integers, and P is greater than Q.
7. The wire-array radio frequency electromagnetic shielding window of claim 2, wherein the transverse conductor is a ring conductor, a plurality of conductor wires overlap the ring conductor from outside of the ring conductor, and no conductor wire overlaps the ring conductor inside of the ring conductor.
8. The wire-array radio frequency electromagnetic shielding window according to claim 1 or 2, wherein the shielding window frame is in ohmic contact with the surrounding conductor by means of crimping or welding.
9. The wire-matrix radio-frequency electromagnetic shielding window according to claim 8, wherein the surrounding conductor is a conductor of a housing of a detector for shielding electromagnetic interference or a conductor used as an electrode circuit of the detector.
10. The wire-array radio frequency electromagnetic shielding window according to claim 1 or 2, wherein when the conductor frame is plural, each frame forms an ohmic contact with a surrounding conductor by means of crimping or welding, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921284593.3U CN210470172U (en) | 2019-08-09 | 2019-08-09 | Wire array type radio frequency electromagnetic shielding window |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921284593.3U CN210470172U (en) | 2019-08-09 | 2019-08-09 | Wire array type radio frequency electromagnetic shielding window |
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| CN210470172U true CN210470172U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921284593.3U Withdrawn - After Issue CN210470172U (en) | 2019-08-09 | 2019-08-09 | Wire array type radio frequency electromagnetic shielding window |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446412A (en) * | 2019-08-09 | 2019-11-12 | 中国工程物理研究院流体物理研究所 | A kind of silk configuration radio-frequency electromagnetic shielding windows for detector |
| CN110446412B (en) * | 2019-08-09 | 2024-05-14 | 中国工程物理研究院流体物理研究所 | A silk array formula radio frequency electromagnetic shield window for detector |
-
2019
- 2019-08-09 CN CN201921284593.3U patent/CN210470172U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446412A (en) * | 2019-08-09 | 2019-11-12 | 中国工程物理研究院流体物理研究所 | A kind of silk configuration radio-frequency electromagnetic shielding windows for detector |
| CN110446412B (en) * | 2019-08-09 | 2024-05-14 | 中国工程物理研究院流体物理研究所 | A silk array formula radio frequency electromagnetic shield window for detector |
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