CN214542533U - Embedded antenna in screen inner structure - Google Patents
Embedded antenna in screen inner structure Download PDFInfo
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- CN214542533U CN214542533U CN202120784083.3U CN202120784083U CN214542533U CN 214542533 U CN214542533 U CN 214542533U CN 202120784083 U CN202120784083 U CN 202120784083U CN 214542533 U CN214542533 U CN 214542533U
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Abstract
The application relates to an antenna embedded in a screen internal structure, which comprises an antenna radiator made of a metal piece, a substrate and a signal chip arranged on the substrate; the shape of the wire of the antenna radiator comprises an inverted F shape, an inverted L shape or a snake shape; the antenna signal feed port and the antenna loop ground feed port are arranged on the substrate, and two feed points are correspondingly arranged on the antenna radiator; the antenna radiator is respectively connected with the feed port and the ground feed port through two feed points arranged on the antenna radiator, and the feed port is connected with the signal chip. The antenna has the advantages of overall miniaturization, simple and compact structure, convenience in wiring, flexibility in adjustment, low cost, easiness in production and manufacture and extremely stable consistency of antenna finished products.
Description
Technical Field
The application relates to the field of antennas, in particular to an antenna embedded in a screen inner structure.
Background
With the development trend of miniaturization of novel mobile terminal products, the problems that the available space inside the products is reduced, and the design requirements on the appearance of the antenna are also refined and miniaturized are faced therewith. Antennas (such as bluetooth antennas and WIFI antennas) in conventional mobile terminal products are generally limited to patch antennas or non-adjustable ceramic antennas disposed inside the products.
But patch antennas, such as: the antenna with the elastic sheet and the fpc patch has higher cost, and the general built-in patch antenna occupies larger internal space of the product; ceramic antenna, for example metal + ceramic sintered antenna, has the antenna with high costs and the antenna can occupy the problem in great product inner space equally, and ceramic antenna is very strict to the preparation technology requirement simultaneously, and production efficiency is low, appears easily moreover that antenna performance test result is excellent but can not reach the problem of ideal effect when practically using the product for the off-the-shelf uniformity of antenna is not stable enough. Therefore, improvements are still needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, especially to arrange the patch antenna and the ceramic antenna inside the product, the cost is high, and the antenna can occupy the problem of a larger product inner space, and the problem that the consistency of the ceramic antenna finished product is not stable enough, the application provides an antenna embedded in a screen inner structure.
The application provides a pair of embedded antenna in screen inner structure adopts following technical scheme:
an antenna embedded in a screen internal structure comprises an antenna radiator made of metal pieces, a substrate and a signal chip arranged on the substrate; the shape of the wire of the antenna radiator comprises an inverted F shape, an inverted L shape or a snake shape; the antenna signal feed port and the antenna loop ground feed port are arranged on the substrate, and two feed points are correspondingly arranged on the antenna radiator; the antenna radiator is respectively connected with the feed port and the ground feed port through two feed points arranged on the antenna radiator, and the feed port is connected with the signal chip.
By adopting the technical scheme, particularly the antenna radiator made of the metal piece steel sheet, the wiring shape of the antenna radiator comprises an inverted F shape, an inverted L shape or a snake shape, the antenna radiator is respectively connected with the feed port and the ground feed port arranged on the substrate through two feed points arranged on the antenna radiator, and the feed port is connected with the signal chip, so that the overall miniaturization of the antenna is realized, the occupied internal space of a product is reduced, and the antenna has the advantages of simple and compact structure, convenient wiring, flexible adjustment, low cost and easy production and manufacture; in addition, the antenna radiation unit is made of metal piece steel sheets, so that the consistency of the antenna finished product is very stable. In addition, adopt including type of falling F, type of falling L or snake type through setting up the line shape of antenna radiator in this application to can effectively strengthen the radiating effect of antenna.
Preferably, the length of the antenna radiator is determined by the resonant frequency of the antenna.
By adopting the technical scheme, the resonant frequency of the antenna can be adjusted quickly and accurately.
Preferably, a groove is arranged between the antenna signal feed port and the antenna loop ground feed port on the substrate, and the length, width and depth of the groove are determined by the bandwidth of the antenna.
By adopting the technical scheme, the effective bandwidth of the antenna can be quickly and accurately adjusted.
Preferably, the distance between the antenna radiator and the substrate is equal to the distance between the mainboard and the screen.
By adopting the technical scheme, the shape of the wiring combined with the antenna radiator comprises an inverted F shape, an inverted L shape or a snake shape, so that the bandwidth of the antenna can be effectively increased, all frequency bands of 2.4-2.485 GHz of the ISM are covered, and the antenna is completely compatible with the current mobile communication frequency band.
Preferably, the antenna is a bluetooth antenna, a WIFI antenna or an RFID ultra-high frequency antenna.
In summary, the present application includes at least one of the following beneficial technical effects:
by adopting the antenna structure, particularly the antenna radiator made of the metal piece steel sheet, the wiring shape of the antenna radiator comprises an inverted F shape, an inverted L shape or a snake shape, the antenna radiator is respectively connected with the feed port and the ground feed port arranged on the substrate through the two feed points arranged on the antenna radiator, and the feed port is connected with the signal chip, so that the overall miniaturization of the antenna is realized, the occupied internal space of a product is reduced, and the antenna structure is simple and compact, convenient to wire, flexible to adjust, low in cost and easy to produce and manufacture; in addition, the antenna radiation unit is made of metal piece steel sheets, so that the consistency of the antenna finished product is very stable. In addition, adopt including type of falling F, type of falling L or snake type through setting up the line shape of antenna radiator in this application to can effectively strengthen the radiating effect of antenna.
Drawings
Fig. 1 is a schematic structural diagram of an antenna in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a substrate in an embodiment of the present application.
Fig. 3 is a schematic diagram of an inverted-F antenna radiator according to an embodiment of the present application.
Fig. 4 is a graph of S11 for an antenna in an embodiment of the present application.
Fig. 5 is a schematic standing wave ratio diagram of an antenna according to an embodiment of the present application.
Fig. 6 is a schematic diagram of an electric field plane corresponding to an antenna in an embodiment of the present application.
Fig. 7 is a schematic view of a magnetic field plane corresponding to an antenna in an embodiment of the present application.
Fig. 8 is a 3D gain diagram of an antenna in an embodiment of the present application.
Fig. 9 is a schematic diagram of an antenna in an embodiment of the present application applied to an electronic device.
Description of reference numerals: 1. the antenna comprises an antenna radiator body, a substrate, a feed port, a feed ground port, a feed point, a groove and a long branch section, wherein the antenna radiator body 2 comprises a base plate 3, the feed port 4 comprises a feed ground port 5; 8. a first short branch section; 9. a second short branch section; 10. an inverted-F antenna radiator; 11. a glass screen; 12. a housing of FR4 material; 13. a chip PCB board; 14. and (4) producing an internal battery.
Detailed Description
The present application is described in further detail below with reference to figures 1-9.
The embodiment of the application discloses embedded antenna in screen inner structure. Referring to fig. 1 and 2, an antenna embedded in a screen internal structure includes an antenna radiator 1 made of a metal member (such as a steel sheet, an FPC, an LDS (any metal element), a substrate 2, and a signal chip disposed on the substrate 2; the shape of the wiring of the antenna radiator 1 comprises an inverted F shape, an inverted L shape or a snake shape; an antenna signal feed port 3 and an antenna loop ground feed port 4 are arranged on the substrate 2, and two feed points 5 are correspondingly arranged on the antenna radiator; the antenna radiator 1 is respectively connected with the feed port 3 and the ground feed port 4 through two feed points 5 arranged on the antenna radiator, and the feed port 3 is connected with the signal chip.
The length, width and height of the antenna radiator 1 are not particularly limited, but need to be combined with the situation of a specific application, for example, when the antenna is installed in the screen, the antenna cannot exceed the appearance of the screen.
Optionally, for the inverted-F antenna radiator 1, the antenna radiator includes a long branch node 7, a first short branch node 8, and a second short branch node 9, and the two feed points are correspondingly disposed on the first short branch node 8 and the second short branch node 9.
Specific to which short branch section is provided with which feed point 5, no specific requirement exists; other arrangement modes can also be adopted, for example, two feed points 5 are arranged on the long branch section, or one feed point is arranged on the long branch section, and the other feed point is arranged on the short branch section; for the inverted-L antenna radiator 1, the two feed points 5 may be both disposed on the short stub, may also be both disposed on the long stub, or one is disposed on the long stub and one is disposed on the short stub, and there is no specific requirement; likewise, for the snake-shaped routing, the specific arrangement position of the two feed points 5 is not limited.
Optionally, the length of the trace of the antenna radiator 1 is determined by the resonant frequency of the antenna.
For the inverted F antenna, under the condition that the length of the short branch is determined, the length of the long branch can be correspondingly determined through the resonant frequency.
In specific implementation, for example, referring to fig. 3, for the inverted-F antenna radiator 1, the antenna wavelength with the center frequency of 2.45GHz obtained from λ ═ C/ν is 122mm, and the wave transmission passes through both the medium and the free space, so the actual wavelength should be between the guided wavelength of the medium and the operating wavelength of the free space. For the 2.45GHz working band, the 1/4 wavelength is between 16.6mm and 30.5mm, and the length of the long branch 7 of the inverted F antenna radiator 1 in fig. 3 is determined under the condition that the lengths of the short branches 2 and 3 are kept unchanged.
Optionally, a groove 6 is disposed between the antenna signal feed port 3 and the antenna loop ground feed port 4 on the substrate 2, and the length, width, and depth of the groove 6 are determined by the bandwidth of the antenna.
Optionally, the distance between the antenna radiator 1 and the substrate 2 is equal to the distance between the motherboard and the screen.
Optionally, the antenna is a bluetooth antenna, a WIFI antenna, or an RFID ultra-high frequency antenna.
In a specific implementation, the power feeding port 3 may also use a pi matching circuit (i.e., a pi-type circuit (composed of a capacitor and an inductor)) reserved on the main board to adjust the performance of the antenna.
The application discloses an application method of an antenna embedded in a screen internal structure, wherein the antenna is embedded in equipment with a screen structure; specifically, the antenna radiator 1 is embedded in a gap between the screen and the shell, and the substrate 2 is arranged in a gap below the screen; the substrate 2 is provided with a signal chip, an antenna signal feed port 3 and an antenna loop ground feed port 4, and the antenna radiator 1 is correspondingly provided with two feed points 5; the antenna radiator 1 is respectively connected with the feed port 3 and the ground port 4 through two feed points 5 arranged on the antenna radiator, and the antenna signal feed port 3 (which can be connected with a signal chip through a pi matching circuit) is connected with the signal chip.
In specific implementation, in order to save cost and space, the substrate may adopt a PCB board where the device motherboard is located, the PCB board is provided with a signal chip, an antenna signal feed port and an antenna loop ground feed port, the antenna radiator is connected with the feed port and the ground feed port through two feed points arranged on the antenna radiator, and the antenna signal feed port is reserved with an antenna impedance matching circuit and connected with the signal chip.
The antenna can be applied to equipment needing communication, such as a smart watch, a smart mobile phone, a smart television and the like, and can be hidden at the edge of a screen due to small size (the performance of the antenna is kept unchanged basically), so that the space can be utilized to a greater extent in a limited space.
The inventors performed a series of tests on the antenna structure in the present application, specifically as follows:
the antenna structure comprises an antenna radiator made of a metal piece steel sheet, a substrate and a signal chip arranged on the substrate; the shape of the wire of the antenna radiator comprises an inverted F shape, an inverted L shape or a snake shape; the antenna signal feed port and the antenna loop ground feed port are arranged on the substrate, and two feed points are correspondingly arranged on the antenna radiator; the antenna radiator is respectively connected with the feed port and the ground feed port through two feed points arranged on the antenna radiator, and the feed port is connected with the signal chip.
The inventors tested the loss and impedance characteristics of the antenna as measured by the return loss characteristics. S11 represents the return loss characteristic, and the dB value and the impedance characteristic of the loss of the antenna can be generally determined by the network analyzer through the index, and the transmission efficiency of the antenna is further determined, and the larger the S11 value is, the larger the energy reflected by the antenna itself is, the worse the transmission efficiency of the antenna is. According to the illustration in fig. 4, the antenna of the present application has a small S11 value, which indicates that the radiation efficiency of the antenna is very good.
The inventor also tests the Standing-Wave Ratio (the Standing-Wave Ratio is called Voltage Standing-Wave Ratio, also called VSWR and SWR, the abbreviation of English Voltage standard Wave Ratio, the Ratio of the Voltage of the antinode of the Standing Wave to the Voltage amplitude of the Wave trough, also called Standing-Wave coefficient and Standing-Wave Ratio) of the antenna, when the Standing-Wave Ratio is equal to 1, the frequency point required by the wiring matching of the antenna is represented, at the moment, all high-frequency energy is radiated by the antenna, and no energy reflection loss exists; when the standing-wave ratio is infinite, the total reflection is shown, and the energy is not radiated at all. As can be seen from fig. 5, the standing-wave ratio of the antenna structure of the present application is close to 1, and therefore, the antenna radiation efficiency is high and the radiation effect is good.
In addition, the inventor also tests the directional diagram of the antenna with the structure of the application. An antenna directional pattern, that is, a pattern for representing the directivity of an antenna, refers to a pattern in which the relative field strength (normalized mode value) of a radiation field changes with the direction at a certain distance from the antenna, that is, the relationship between the relative value of the radiation field of the antenna and the spatial direction under the condition of the same distance R in a far zone is usually represented by two mutually perpendicular plane directional patterns in the maximum radiation direction of the antenna. The antenna pattern is an important graph for measuring the performance of the antenna, and various parameters of the antenna can be observed from the antenna pattern.
Fig. 6, 7, and 8 are schematic diagrams of an electric field surface direction, a magnetic field surface direction, and a 3D gain obtained by an antenna (that is, an antenna radiator made of a metal part, a substrate, and a signal chip disposed on the substrate, where the trace shape of the antenna radiator includes an inverted F shape, an inverted L shape, or a serpentine shape, an antenna signal feed port and an antenna loop ground feed port are disposed on the substrate, two feed points are correspondingly disposed on the antenna radiator, the antenna radiator is connected with the feed port and the ground feed port through the two feed points disposed thereon, and the feed port is connected with the signal chip) based on the structure of the present application, as can be seen from fig. 6 to 8: the antenna (namely, the antenna radiator, the substrate and the signal chip arranged on the substrate are manufactured by metal pieces, the wiring shape of the antenna radiator comprises an inverted F shape, an inverted L shape or a snake shape, the substrate is provided with an antenna signal feed port and an antenna loop ground feed port, the antenna radiator is correspondingly provided with two feed points, the antenna radiator is respectively connected with the feed port and the ground feed port through the two feed points arranged on the antenna radiator, and the feed port is connected with the signal chip) and the index of the antenna meets the industrial requirement.
Fig. 9 is a schematic application diagram of an antenna embedded in an internal structure of a screen according to the present application, where reference numeral 10 is an inverted F-shaped antenna radiator embedded in a gap between the screen and a housing; reference numeral 11 is a screen made of glass, reference numeral 12 is a housing made of FR4, reference numeral 13 is a chip PCB (in order to save cost and space, the substrate may be a PCB where the device motherboard is located, a signal chip, an antenna signal feed port and an antenna loop ground feed port are disposed on the PCB, an antenna radiator is connected with the feed port and the ground feed port through two feed points disposed thereon, an antenna impedance matching circuit is reserved in the antenna signal feed port and connected with the signal chip), and reference numeral 14 is a battery inside the product.
In addition, the inventors also tested the passive efficiency and gain of the antenna in the present application as shown in Table 1 (Table 1 is the passive data of a Laboratory System: MVG SG24LT of an antenna design embedded in the internal structure of a screen, and the data table of the passive efficiency and gain of the antenna tested in the Laboratory):
as can be seen from Table 1: the antenna (comprising an antenna radiator made of metal pieces, a substrate and a signal chip arranged on the substrate, wherein the wiring shape of the antenna radiator comprises an inverted F shape, an inverted L shape or a snake shape, the substrate is provided with an antenna signal feed port and an antenna loop ground feed port, two feed points are correspondingly arranged on the antenna radiator, the antenna radiator is respectively connected with the feed port and the ground feed port through the two feed points arranged on the antenna radiator, and the feed port is connected with the signal chip) meets the design requirements of industrial antennas, and the coverage frequency, the radiation efficiency and the gain are better.
TABLE 1
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (4)
1. The utility model provides an embedded antenna in screen inner structure which characterized in that: the antenna comprises an antenna radiator (1) made of metal pieces, a substrate (2) and a signal chip arranged on the substrate (2); the wiring shape of the antenna radiator (1) comprises an inverted F shape, an inverted L shape or a snake shape; an antenna signal feed port (3) and an antenna loop ground feed port (4) are arranged on the substrate (2), and two feed points (5) are correspondingly arranged on the antenna radiator; the antenna radiator (1) is respectively connected with the feed port (3) and the ground feed port (4) through two feed points (5) arranged on the antenna radiator, and the feed port (3) is connected with the signal chip.
2. The antenna embedded in an inner structure of a screen of claim 1, wherein: the length of the wiring of the antenna radiator (1) is determined by the resonant frequency of the antenna.
3. The antenna embedded in an inner structure of a screen of claim 1, wherein: the distance between the antenna radiator (1) and the substrate (2) is equal to the distance between the mainboard and the screen.
4. The antenna embedded in the screen inner structure of any one of claims 1 to 3, wherein the antenna is a Bluetooth antenna, a WIFI antenna or an RFID UHF antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120784083.3U CN214542533U (en) | 2021-04-16 | 2021-04-16 | Embedded antenna in screen inner structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120784083.3U CN214542533U (en) | 2021-04-16 | 2021-04-16 | Embedded antenna in screen inner structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214542533U true CN214542533U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120784083.3U Active CN214542533U (en) | 2021-04-16 | 2021-04-16 | Embedded antenna in screen inner structure |
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| Country | Link |
|---|---|
| CN (1) | CN214542533U (en) |
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2021
- 2021-04-16 CN CN202120784083.3U patent/CN214542533U/en active Active
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