CN113597246A - Shield case and electronic device - Google Patents
Shield case and electronic device Download PDFInfo
- Publication number
- CN113597246A CN113597246A CN202110862449.9A CN202110862449A CN113597246A CN 113597246 A CN113597246 A CN 113597246A CN 202110862449 A CN202110862449 A CN 202110862449A CN 113597246 A CN113597246 A CN 113597246A
- Authority
- CN
- China
- Prior art keywords
- surface layer
- selective surface
- patch
- frequency selective
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002344 surface layer Substances 0.000 claims abstract description 52
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 230000000737 periodic effect Effects 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims description 30
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 238000001914 filtration Methods 0.000 description 12
- 239000004744 fabric Substances 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The application discloses a shielding case and an electronic device, wherein the shielding case comprises a conductive cover body, a substrate and a frequency selective surface layer; the substrate is arranged in the conductive cover body; the frequency selective surface layer is arranged on the substrate and is electrically connected with the conductive cover body; the frequency selective surface layer includes a periodic array structure of a plurality of patch elements. The utility model discloses a shield cover and electronic equipment, structural design is reasonable, not only can shield the electromagnetic wave, can filter the electromagnetic wave energy that has specific frequency moreover, and shielding effect is better.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a shielding case and electronic equipment.
Background
In the related art, the shielding case is a tool for shielding electronic signals, and functions to shield the influence of external electromagnetic waves on internal circuits and the outward radiation of electromagnetic waves generated inside.
The existing shielding cover arranged on the circuit board can reflect the electromagnetic waves generated by each device on the circuit board, thereby preventing the electromagnetic waves from radiating outwards. However, the shield can cannot dissipate the energy of the electromagnetic wave, and particularly, when the shield has a hole or is poorly welded, the electromagnetic energy is easily leaked, which results in a poor shielding effect of the shield.
Disclosure of Invention
The present application is directed to a shield can and an electronic device that addresses at least one of the problems of the background art.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a shield case, including:
a conductive cover body;
a substrate disposed in the conductive cage;
a frequency selective surface layer disposed on the substrate and electrically connected to the conductive cage; the frequency selective surface layer includes a periodic array structure of a plurality of patch elements.
In a second aspect, an embodiment of the present application provides an electronic device, including:
a circuit board;
the shielding case is arranged on the circuit board.
In the embodiment of the application, the frequency selective surface layer is arranged on the conductive cover body, and the frequency selective surface layer can filter electromagnetic wave energy with specific frequency, so that the shielding effect of the shielding cover in the application is obviously improved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a shield according to an embodiment of the present application;
FIG. 2 is a schematic plan view of a shield according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an equivalent circuit model of a shield case according to an embodiment of the present application;
FIG. 4 is a schematic perspective view of a shield according to an embodiment of the present application;
fig. 5 is a transmission frequency curve of the frequency selective surface layer of the shield of the embodiment of the present application.
Reference numerals:
in the figure: 1. a circuit board; 2. a conductive cover body; 3. a substrate; 4. a frequency selective surface layer; 41. a first metal patch; 42. a second metal patch; 43. and (4) a chip resistor.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting 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.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A shield case and an electronic apparatus according to an embodiment of the present application are described below with reference to fig. 1 to 5.
According to some embodiments of the present application, as shown in fig. 1, the present embodiment provides a shield can. The shield is a means for shielding electronic signals. The electromagnetic shielding device has the function of shielding the influence of external electromagnetic waves on internal circuits and the outward radiation of internally generated electromagnetic waves. The shielding case is applied to electronic equipment such as mobile phones, tablet computers, handheld game consoles and the like, and has a good shielding effect.
In particular, the shielding cage comprises a conductive cage body 2, a substrate 3 and a frequency selective surface layer 4. One function of the conductive enclosure 2 is to shield electromagnetic waves and the other function is to conduct electricity.
Further specifically, the substrate 3 is disposed in the conductive enclosure 2. A substrate 3 is fixed in the conductive enclosure 2 for supporting a frequency selective surface layer 4. For example, the substrate 3 may be soldered to the conductive enclosure 2. The present application does not limit the specific fixing form of the substrate 3 as long as it can be substantially firmly fixed to the conductive cover body 2.
The substrate 3 in this embodiment cannot be a conductor, and does not have a conductive function.
In one embodiment, the substrate 3 is an epoxy glass cloth laminate. The epoxy glass cloth laminated board is a laminated product formed by hot pressing of chemically treated alkali-free glass fiber cloth for electricians as a base material and epoxy resin as an adhesive, and has high mechanical strength at high temperature and good electrical performance stability at high humidity. Simultaneously, the surfacing of epoxy glass cloth laminated board, no bubble, pockmark and wrinkle moreover to be convenient for arrange the paster unit in order to form better having periodic structure frequency selection superficial layer 4 at epoxy glass cloth laminated board, thereby can filter the electromagnetic wave of specific frequency effectively, the filter effect is better.
As shown in fig. 1, the frequency selective surface layer 4 is disposed on the substrate 3, and the frequency selective surface layer 4 is electrically connected to the conductive cover 2; the frequency selective surface layer 4 comprises a periodic array structure of a plurality of patch elements.
It should be noted that the Frequency Selective Surface (FSS) is a two-dimensional periodic array structure composed of a large number of conductor patch units (band stop type) or periodic open cells (band pass type) on a conductor screen, and the characteristic of the FSS is that the FSS can effectively control the reflection and transmission of electromagnetic waves. Applications of FSS involve almost all the electromagnetic spectrum, such as frequency reuse for satellite antennas, radomes, circuit analogue absorbers, and various spatial filters and quasi-optical frequency devices. The frequency of the electromagnetic wave filtered by the FSS can be set according to actual needs, so that the electromagnetic wave can be better filtered.
In the present application, the frequency selective surface layer 4 acts as a spatial band reject filter that is not permeable to electromagnetic waves at the resonant frequency of the periodic array and that is permeable to electromagnetic waves at frequencies higher or lower than the resonant frequency. The filtering principle of the frequency selective surface layer 4 is that when an electromagnetic wave is incident on the frequency selective surface layer 4, an electric field in a direction parallel to the surface generates a force on electrons to oscillate them, thereby inducing a current in a periodic surface. At this time, a part of the energy of the incident electromagnetic wave is converted into kinetic energy required for maintaining the oscillation state of the electrons, and the other part of the energy is transmitted through the frequency selective surface and continues to propagate. According to the conservation of energy, the energy that maintains the movement of electrons is absorbed by the electrons. Then the electromagnetic wave at the resonant frequency of the periodic surface is blocked. Thus, the frequency selective surface layer 4 is able to filter electromagnetic waves of a certain specific frequency well. Referring to fig. 5, fig. 5 is a transmission frequency table of electromagnetic waves.
Therefore, the periodic array structure formed by the patch units can filter electromagnetic waves with specific frequency, and the filtering effect is good.
In the present embodiment, by providing the frequency selective surface layer 4 on the conductive cover 2, the frequency selective surface layer 4 can filter out electromagnetic wave energy with a specific frequency, and the shielding effect of the shielding cover in the present application is significantly improved.
Alternatively, as shown in fig. 2, a plurality of the patch units are arranged in a matrix. Firstly, the patch unit is convenient to arrange on the substrate 3, and the operation is very convenient; second, it is convenient to realize the frequency selective surface layer 4 of a periodic array structure composed of a plurality of patch elements, thereby enabling filtering of electromagnetic waves of a specific frequency.
Referring to fig. 2, the patch units located in the same column are perpendicular to the patch units located in the same row. This makes the arrangement of the patch unit very simple and also facilitates the placement of the patch unit on the substrate. In addition, since the patch elements are arranged in a manner related to the frequency of the electromagnetic wave filtered by the frequency selective surface layer 4, the patch elements arranged in a matrix facilitate the filtering of the electromagnetic wave of a certain specific frequency.
Optionally, a patch element located at the periphery of the frequency selective surface layer 4 is electrically connected to the conductive cover 2. This makes the electrical connection of the frequency selective surface layer 4 to the electrically conductive enclosure 2 very simple.
For example, a patch unit located at the periphery of the frequency selective surface layer 4 may be attached to the substrate 3, and at the same time, the patch unit is in contact with the conductive cover 2 to electrically connect the frequency selective surface layer 4 and the conductive cover 2, which not only simplifies the connection relationship, but also facilitates the optimization of the connection structure between the user frequency selective surface layer 4 and the conductive cover 2.
In this embodiment, a gap is provided between two adjacent patch units, so that a capacitor structure is formed between the two adjacent patch units.
Optionally, the patch unit includes a first metal patch 41, a second metal patch 42, and a patch resistor 43, where the patch resistor 43 is located between the first metal patch 41 and the second metal patch 42, and the first metal patch 41 and the second metal patch 42 are electrically connected to the patch resistor 43, respectively. This makes the structure of the patch unit very simple and also facilitates the electrical connection inside the patch unit.
For example, as shown in fig. 2, the first metal patch 41 and the second metal patch 42 are both columnar, and have a length l1The diameter is m, the length d between the first metal patch 41 and the second metal patch 42. In one possible case, m is 0.2 mm.
Distance l between adjacent patch units2. One possible case is that2Is 0.1 mm.
The chip resistor 43 also has a width m. One possible scenario is where the patch resistor 43 is 01005 resistor in size.
Thus, the length of one cycle period is L' 2L1+l2+ d. The electromagnetic wave with the specific frequency to be filtered is convenient to calculate by determining the cycle period, and the length and various parameters of the cycle period are also convenient to calculate by the electromagnetic wave with the specific frequency to be filtered, so that the filtering effect is convenient to ensure, and the arrangement of the filtering unit is also facilitated.
Optionally, the first metal patch 41 and the second metal patch 42 are both rectangular. This facilitates the arrangement of the frequency selective surface layer 4 and also facilitates the rapid calculation of various arrangement parameters, thereby accurately filtering the electromagnetic wave of a specific frequency and well ensuring the shielding effect of the shielding case.
Optionally, the lengths of the first metal patch 41, the second metal patch 42 and the patch resistor 43 in the same patch unit all extend in the same direction. First metal patch 41, chip resistor 43, second metal patch 42 are established ties in proper order, and connection structure is fairly simple, and simultaneously, the process of paster is also fairly simple, is convenient for realize that the shield cover of this application filters the electromagnetic wave of specific frequency effectively.
Optionally, the frequency selective surface layer 4, the substrate 3, and the shield form an RLC series circuit.
In this embodiment, the periodic structure of the frequency selective surface layer 4 may be equivalent to a periodic RLC series circuit, the substrate 3 may be equivalent to a transmission line mismatched with the air layer, and the conductive cover 2 may be equivalent to a short-circuited line. Referring to fig. 3, by adding a resistor, the electromagnetic wave with a resonant frequency point incident to the shielding case can be further converted into internal energy of the resistor, so that the electromagnetic wave energy can be better consumed, and the purpose of filtering and dissipating the electromagnetic wave with a specific frequency can be achieved.
As shown in fig. 3, fig. 3 is an equivalent circuit diagram of the frequency selective surface layer 4, that is, an RLC series circuit, which is a circuit structure composed of a resistor R, an inductor L, and a capacitor C. In fig. 3, arrows indicate the incident direction of electromagnetic waves. R is resistance, L is inductance, C is capacitance.
In the present application, the resonant frequency F0 is a function of L', L2, R. Wherein, L', L2The three parameters R can be adjusted by establishing a model of the shielding case 2 in a simulation software (HFSS)2And changing the position of the resonance peak by the value of R, and finally obtaining the parameter value corresponding to the frequency of the electromagnetic wave to be filtered:
resonant frequency F0 ═ F (L', L)2，R)
Therefore, by adjusting the distance between the first metal patch 41, the second metal patch 42, and the patch resistor 43, and the distance between adjacent patches, it is possible to filter the electromagnetic wave having the target frequency. The electromagnetic wave filter is simple to operate, is convenient for quickly filtering electromagnetic waves with specific frequencies, and has a good filtering effect.
In the present embodiment, the above-described periodic structure L', L may be changed2And the numerical value of R is designed for intercepting and eliminating electromagnetic wave energy of specific frequency to be filtered, for example, 2G harmonic waves or certain unavoidable interference frequency bands, so that the electromagnetic radiation of the specific frequency is filtered and dissipated, and a better shielding effect is achieved.
The conventional shielding structure can reflect only energy of electromagnetic waves, and cannot consume energy. The shielding case can intercept and dissipate electromagnetic waves in a specific frequency band.
In the present embodiment, assuming that the energy of the electromagnetic wave having the resonance frequency point is E, when the electromagnetic wave is incident to the shield case, the reflected energy is E1The energy required for the resonance of the circuit is E2The internal energy generated by the resistor after the current passes through the resistor is T, and then:
E＝E1+E2+T
wherein E is2And T is the energy dissipated by the periodic structure of the frequency-selective surface layer 4, and E1After being reflected by the shielding case, the periodic structure is incident again and can be further converted into E2And T, whereby the energy of the electromagnetic wave having the resonance frequency point is completely dissipated.
In the above embodiment, the periodic array structure composed of the plurality of patch units is used to filter and dissipate energy of the electromagnetic wave with a specific frequency, so that the electromagnetic wave with a specific frequency can be filtered well, and the shielding effect is good.
Optionally, the periphery of the frequency selective surface layer 4 is in contact with the conductive enclosure 2. Firstly, the periphery of the frequency selective surface layer 4 is contacted with the conductive cover body 2 to realize the electrical connection of the two; secondly, it also helps to prevent electromagnetic waves of a specific frequency from passing through the periphery of the frequency selective surface layer 4, thereby better ensuring the filtering effect of the frequency selective surface layer 4.
Optionally, the thickness of the frequency selective surface layer 4 is 0.2 mm-0.3 mm; the thickness of the substrate 3 is 0.05 mm-0.2 mm. This makes the thickness of the frequency selective surface layer 4 and the substrate 3 moderate, which not only facilitates the shielding and dissipation of the electromagnetic wave of the specific frequency by the frequency selective surface layer 4, but also facilitates the reduction of the thickness of the whole conductive cover, and reduces the occupation of the conductive cover to the space of the electronic device, thereby facilitating the reduction of the volume of the electronic device.
Optionally, the thickness of the frequency selective surface layer 4 is 0.2mm and the thickness of the substrate 3 is 0.1 mm. This when guaranteeing that frequency selection superficial layer 4 has better shielding effect, can reduce the frequency selection superficial layer 4 and the occupation of base plate 3 to the inner space of shield cover, be favorable to reducing the volume of shield cover, and then help less electronic equipment's volume, be favorable to promoting user experience.
Alternatively, as shown in fig. 1, the conductive cover body 2 comprises a first side, a second side and a third side, the second side is connected between the first side and the third side, and the frequency selective surface layer 4 is arranged on one side of the second side close to the circuit board. For example, the first side and the third side enclose to form an annular structure, the second side covers an opening at one end of the annular structure, and a circuit board is arranged at an opening at the other end of the annular structure, so that a relatively closed inner space is formed inside the shielding case, and the shielding case can better shield electromagnetic waves.
The structure of the conductive cover body 2 in the above embodiment is relatively simple, and the conductive cover body 2 is conveniently arranged in the electronic device, so that the conductive cover is beneficial to avoiding other structures in the electronic device. At the same time, the provision of the frequency-selective surface layer 4 on the second side facilitates a stable arrangement of the frequency-selective surface layer 4 on the electrically conductive cage 2.
In other embodiments, one end of the conductive cover 2 formed by five planes is an open cuboid structure, and the circuit board is located at the open end of the conductive cover 2 to close the opening of the conductive cover 2, so that the conductive cover and the circuit board enclose a closed space, thereby being capable of well filtering electromagnetic waves generated by components on the circuit board. Meanwhile, the conductive cover body 2 is convenient to be arranged in the electronic equipment, and the internal structure of the electronic equipment is more reasonably arranged.
In the above embodiment, the substrate 3 is disposed on the plane of the conductive cover 2 opposite to the circuit board 1, and the frequency-selective surface layer 4 is disposed on the surface of the substrate 3 opposite to the circuit board 1. The surface of the conductive cover body 2 fixed with the substrate 3 is a plane, so that the substrate 3 is conveniently and firmly fixed on the conductive cover body 2. Further, it is facilitated to firmly fix the frequency selective surface layer 4 on the substrate 3.
To sum up, the shield cover and the electronic equipment disclosed by the application have reasonable structural design, can better shield electromagnetic waves, can filter electromagnetic wave energy with specific frequency, and have better shielding effect.
In a second aspect, the present application provides an electronic device comprising a circuit board 1 and the above-described shield case, the shield case being disposed on the circuit board 1.
It should be noted that, the mounting sequence of the shield enclosure provided in this embodiment is as follows: firstly, fixing a substrate 3 on a conductive cover body 2; then, fixing the substrate 3 on the conductive cover body 2; then, the frequency selective surface layer 4 is attached to the surface of the substrate 3; finally, the entire shield case is fixed to the circuit board 1.
The electronic equipment with the shielding case has reasonable structural design, can better shield electromagnetic waves and filter electromagnetic wave energy with specific frequency, and has better shielding effect.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A shielding cage, comprising:
a conductive cover body;
a substrate disposed in the conductive cage;
a frequency selective surface layer disposed on the substrate and electrically connected to the conductive cage; the frequency selective surface layer includes a periodic array structure of a plurality of patch elements.
2. The shielding cage of claim 1,
the patch units are arranged in a matrix.
3. The shielding cage of claim 1, wherein a patch element located at the periphery of said frequency selective surface layer is electrically connected to said conductive cage body.
4. The shielding cage of claim 1,
the chip unit comprises a first metal chip, a second metal chip and a chip resistor, the chip resistor is located between the first metal chip and the second metal chip, and the first metal chip and the second metal chip are respectively electrically connected with the chip resistor.
5. The shielding cage of claim 4, wherein said first metal patch and said second metal patch are rectangular.
6. The shielding cage of claim 4, wherein the lengths of the first metal patch, the second metal patch, and the patch resistor in the same patch unit all extend in the same direction.
7. The shield of claim 1, wherein the frequency selective surface layer, the substrate, and the shield form an RLC series circuit.
8. The shielding cage of claim 1, wherein the perimeter of said frequency selective surface layer is in contact with said conductive cage body.
9. The shielding cage of claim 1, wherein said frequency selective surface layer has a thickness of 0.2mm to 0.3 mm;
the thickness of the substrate is 0.05 mm-0.2 mm.
10. An electronic device, comprising:
a circuit board;
the shield of any one of claims 1 to 9, disposed on the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110862449.9A CN113597246A (en) | 2021-07-28 | 2021-07-28 | Shield case and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110862449.9A CN113597246A (en) | 2021-07-28 | 2021-07-28 | Shield case and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113597246A true CN113597246A (en) | 2021-11-02 |
Family
ID=78251667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110862449.9A Pending CN113597246A (en) | 2021-07-28 | 2021-07-28 | Shield case and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113597246A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100101853A1 (en) * | 2006-08-11 | 2010-04-29 | Superior Essex Communications Lp | Communication cable having electrically isolated shield providing enhanced return loss |
| WO2011128036A1 (en) * | 2010-04-12 | 2011-10-20 | Eth Zurich | Absorber for electromagnetic radiation |
| CN203872502U (en) * | 2014-03-19 | 2014-10-08 | 北京中欧美经济技术发展中心 | Electromagnetic shielding device |
| CN106572625A (en) * | 2016-11-09 | 2017-04-19 | 上海无线电设备研究所 | Novel reflection-absorption integrated electromagnetic shielding structure |
| CN107591620A (en) * | 2017-08-30 | 2018-01-16 | 上海摩软通讯技术有限公司 | Chip and its terminal device |
| CN108565557A (en) * | 2018-04-20 | 2018-09-21 | 西安天和防务技术股份有限公司 | A kind of frequency-selective surfaces and ultra-thin frequency select antenna house |
| CN110248529A (en) * | 2019-06-28 | 2019-09-17 | 四川大学 | A kind of electro-magnetic shielding cover |
| KR102129386B1 (en) * | 2019-09-16 | 2020-07-02 | 충북대학교 산학협력단 | Ultrawide Bandwidth Electromagnetic Wave Absorbers Using High-Capacitive Spiral Frequency Selective Surfaces |
-
2021
- 2021-07-28 CN CN202110862449.9A patent/CN113597246A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100101853A1 (en) * | 2006-08-11 | 2010-04-29 | Superior Essex Communications Lp | Communication cable having electrically isolated shield providing enhanced return loss |
| WO2011128036A1 (en) * | 2010-04-12 | 2011-10-20 | Eth Zurich | Absorber for electromagnetic radiation |
| CN203872502U (en) * | 2014-03-19 | 2014-10-08 | 北京中欧美经济技术发展中心 | Electromagnetic shielding device |
| CN106572625A (en) * | 2016-11-09 | 2017-04-19 | 上海无线电设备研究所 | Novel reflection-absorption integrated electromagnetic shielding structure |
| CN107591620A (en) * | 2017-08-30 | 2018-01-16 | 上海摩软通讯技术有限公司 | Chip and its terminal device |
| CN108565557A (en) * | 2018-04-20 | 2018-09-21 | 西安天和防务技术股份有限公司 | A kind of frequency-selective surfaces and ultra-thin frequency select antenna house |
| CN110248529A (en) * | 2019-06-28 | 2019-09-17 | 四川大学 | A kind of electro-magnetic shielding cover |
| KR102129386B1 (en) * | 2019-09-16 | 2020-07-02 | 충북대학교 산학협력단 | Ultrawide Bandwidth Electromagnetic Wave Absorbers Using High-Capacitive Spiral Frequency Selective Surfaces |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110729549B (en) | Electronic equipment | |
| JP4384102B2 (en) | Portable radio device and antenna device | |
| CN105580199B (en) | Antenna assembly and electronic equipment with the antenna assembly | |
| US11005162B2 (en) | Antenna structure of wireless communication device | |
| CN102904065A (en) | Wave absorbing device and wireless terminal | |
| CN110890621B (en) | Chip antenna module | |
| JP2013243429A (en) | Structural member and radio communication device provided with structural member | |
| US11831082B2 (en) | Structure, antenna, wireless communication module, and wireless communication device | |
| Tian et al. | Flexible and reconfigurable frequency selective surface with wide angular stability fabricated with additive manufacturing procedure | |
| US20210313706A1 (en) | Structure, antenna, wireless communication module, and wireless communication device | |
| Hong et al. | Miniaturized frequency selective surface using handshake convoluted stripe | |
| CN107948355B (en) | Circuit board capable of improving antenna radiation performance and terminal equipment | |
| CN205266129U (en) | PCB electromagnetic shield box | |
| US20200411993A1 (en) | Housing Assembly, Antenna Assembly, and Electronic Device | |
| US20210194154A1 (en) | Structure, antenna, wireless communication module, and wireless communication device | |
| Sainadh et al. | Polarization-insensitive absorptive/transmissive reconfigurable frequency selective surface with embedded biasing | |
| EP3041088B1 (en) | Antenna device | |
| CN113597246A (en) | Shield case and electronic device | |
| US11637383B2 (en) | Structure, antenna, wireless communication module, and wireless communication device | |
| US11876297B2 (en) | Structure, antenna, wireless communication module, and wireless communication device | |
| US20210194118A1 (en) | Structure, antenna, wireless communication module, and wireless communication device | |
| US10573951B2 (en) | Split resonator and printed circuit board including the same | |
| US20220225494A1 (en) | Metamaterial electromagnetic absorber | |
| CN214849031U (en) | AFU antenna structure | |
| CN205985342U (en) | Casing, antenna device and mobile terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |