CN217562832U - WiFi antenna with parasitic antenna and terminal - Google Patents
WiFi antenna with parasitic antenna and terminal Download PDFInfo
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- CN217562832U CN217562832U CN202221512485.9U CN202221512485U CN217562832U CN 217562832 U CN217562832 U CN 217562832U CN 202221512485 U CN202221512485 U CN 202221512485U CN 217562832 U CN217562832 U CN 217562832U
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- 230000003071 parasitic effect Effects 0.000 title claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 18
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000191 radiation effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model provides a WiFi antenna with parasitic antenna and a terminal, which comprises a substrate and an antenna component; the antenna assembly comprises a first antenna assembly and a second antenna assembly; the first antenna component comprises a first radiating structure, a feed point and a first ground point; the feeding point is electrically connected with the first radiation structure; the grounding point is electrically connected with the first radiation structure; the first radiating structure comprises a first antenna stub and a second antenna stub; the second antenna assembly includes a second radiating structure and a second ground point; the second radiation structure is electrically connected with the second grounding point; the second antenna component is a parasitic antenna of the WiFi antenna, the second grounding point is a far-point grounding point of the WiFi antenna, and the bandwidth of the antenna at a 2.4GHz frequency section can be controlled, so that the directivity coefficient of the antenna is changed, and the problem that the directivity coefficient of the conventional WiFi antenna is weak is solved.
Description
Technical Field
The utility model relates to a radio communication field, in particular to design of the wiFi antenna of 5.0G frequency channel performance of strengthening.
Background
WiFi wireless network surfing can be simply understood as wireless surfing, and almost all intelligent terminals, tablet computers and notebook computers support WiFi surfing, so that the wireless network transmission technology which is most widely used at present is adopted. But the transmission speed is very fast, can reach 54Mbps, and meets the requirements of personal and social informatization.
At present, more and more terminals supporting WiFi wireless internet access are available in the market, and various terminal manufacturers also launch full-scene terminal wireless devices and terminal scenes, intelligent interconnection from the terminals to automobiles, and working places and shopping malls covered by full-scene WiFi from smart homes covered by the full-scene WiFi, and the like, so that all aspects of people's life are increasingly kept away from WiFi wireless internet access, and higher requirements on the quality, transmission rate and connection efficiency of WiFi internet access are provided.
At present, most of terminal WiFi equipment adopts a dual-frequency WiFi antenna, and the dual-frequency WiFi antenna refers to an antenna which supports 2.4G and 5.0G frequency bands simultaneously. The 2.4G frequency band has more devices, relatively better penetrability and relatively longer coverage distance. However, 2.4G devices are too many, and currently, in a home environment, the number of surrounding 2.4G APs (Access points) which can be searched by each family is more than 5. The environment of 2.4G is increasingly noisy and the interference is more and more. The 5G channel is clean, the speed is faster, and under the condition of transmitting the same multi-data, the 5G channel can save more power, and the user experience is better.
Because the internal space of the mobile terminal is limited, and in order to achieve more functions, the mobile terminal is often stacked with a large number of components inside, including antennas supporting more frequency bands, more speakers, larger screens, more cameras, and the like. Therefore, the space left for the WiFi antenna inside the terminal is very small, and the WiFi antenna is difficult to have both 2.4G and 5G performance, so an antenna form is urgently needed to make the dual-band radiation performance of the WiFi antenna better.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wiFi antenna and terminal with parasitic antenna solves present wiFi antenna at the relatively poor problem of 5G frequency channel performance.
In order to solve the above problem, the present invention provides a WiFi antenna with a parasitic antenna, which is characterized in that the WiFi antenna comprises a substrate, an antenna assembly and a ground plate;
the antenna assembly comprises a first antenna assembly and a second antenna assembly; the first antenna assembly comprises
The antenna comprises a first antenna branch, a second antenna branch, an inverted L-shaped third antenna branch and a feed point; the feed point is electrically connected with the second antenna branch node; the first antenna branch is electrically connected with the grounding plate;
the second antenna assembly includes a fourth antenna stub; the fourth antenna stub is electrically connected with the ground plate.
Optionally, in the WiFi antenna with a parasitic antenna, the substrate is made of FPC or PCB.
Optionally, in the WiFi antenna with a parasitic antenna, the ground plate is a copper-clad structure.
Optionally, in the WiFi antenna with a parasitic antenna, the first antenna component is in the form of an IFA antenna.
Optionally, in the WiFi antenna with a parasitic antenna, the first antenna stub and the third antenna stub are parallel to each other and a gap is left between the first antenna stub and the third antenna stub.
Optionally, in the WiFi antenna with a parasitic antenna, the width of the slot is 2 ± 0.2mm.
Optionally, in the WiFi antenna with a parasitic antenna, the length of the first antenna stub is 5.2 ± 0.5mm.
Optionally, in the WiFi antenna with a parasitic antenna, the length of the long side of the second antenna branch is 17.2 ± 0.17mm, and the length of the short side is 3.1 ± 0.3mm.
Optionally, in the WiFi antenna with parasitic antenna, the distance between the first antenna component and the second antenna component is 16 ± 1.6mm.
The utility model also provides a terminal, the terminal contains a wiFi antenna with parasitic antenna.
The beneficial effects of the utility model are that:
the parasitic antenna is arranged beside a main antenna of the WiFi antenna, the main antenna and the parasitic antenna share a grounding point, and the distance between the grounding points is far, so that the directivity coefficient of the WiFi antenna can be improved; furthermore, the parasitic antenna assists the resonance of the WiFi antenna at the 5G frequency band, so as to improve the radiation performance of the WiFi antenna at the 5G frequency band and improve the dual-frequency radiation effect of the WiFi antenna.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structural diagram of a WiFi antenna with a parasitic antenna provided in this embodiment;
wherein the reference numerals are as follows:
1-a substrate; 2-an antenna component; 3-a ground plate; 21-a first antenna component; 22-a second antenna component; 211-a first antenna branch; 212-a second antenna stub; 213-third antenna stub; 214-a feeding point; 221-fourth antenna branch.
Detailed Description
The WiFi antenna with parasitic antenna and the indoor terminal provided by the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that "first", "second", etc. in the description and claims of the present invention and the accompanying drawings are used for distinguishing similar objects so as to describe the embodiments of the present invention, and are not used for describing a specific order or sequence, and it should be understood that structures used in this way may be interchanged under appropriate circumstances. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model provides a WiFi antenna with parasitic antenna, including base plate, antenna module and ground plate; the antenna assembly comprises a first antenna assembly and a second antenna assembly; the first antenna assembly comprises a first antenna branch, a second antenna branch, a third antenna branch in an inverted L shape and a feed point; the feed point is electrically connected with the second antenna branch node; the first antenna branch is electrically connected with the grounding plate; the second antenna assembly includes a fourth antenna stub; the fourth antenna branch is electrically connected with the grounding plate; a parasitic antenna is arranged beside a main antenna of the WiFi antenna, the main antenna and the parasitic antenna share a grounding point, and the grounding point is far away from each other, so that the directivity coefficient of the WiFi antenna can be improved; furthermore, the parasitic antenna assists the resonance of the WiFi antenna at the 5G frequency band section, so that the radiation performance of the WiFi antenna at the 5G frequency band section is improved, and the double-frequency radiation effect of the WiFi antenna is improved.
Fig. 1 is a structural diagram of a WiFi antenna with a parasitic antenna provided in this embodiment, where the WiFi antenna with a parasitic antenna includes a substrate 1, an antenna component 2 and a ground plate 3; the antenna assembly 2 comprises a first antenna assembly 21 and a second antenna assembly 22; the first antenna assembly 21 includes a first antenna branch 211, a second antenna branch 212, a third antenna branch 213 in an inverted "L" shape, and a feeding point 214; the feeding point 214 is electrically connected to the second antenna branch 212; the first antenna branch 211 is electrically connected with the ground plate 3; the second antenna assembly 22 comprises a fourth antenna branch 221; the fourth antenna branch 221 is electrically connected to the ground plane 3.
Preferably, the substrate 1 is made of FPC or PCB, and the material selection of the substrate 1 may be determined according to the process of the WiFi antenna and the environment of the WiFi antenna in the terminal, and the specific selection manner is well known to those skilled in the art and will not be described herein again.
In this embodiment, the first antenna branch 211 and the third antenna branch 213 are parallel to each other and have a gap in between, and the gap can be used to adjust the bandwidth of the WiFi antenna; more preferably, the width of the slot is 2 ± 0.2mm, and when the slot is the above-mentioned preferred size, the WiFi antenna has good bandwidth performance, and obviously, the slot may be other sizes according to the size of the actual WiFi antenna.
Preferably, the length of the first antenna branch 211 is 5.2 ± 0.5mm, the length of the long side of the second antenna branch 212 is 17.2 ± 0.17mm, the length of the short side is 3.1 ± 0.3mm, and the total length of the second antenna branch 212 is longer than that of the first antenna branch 211, so that the first antenna branch 211 is used to adjust the resonance of the WiFi antenna at the 5G frequency band, and the second antenna branch 212 is used to adjust the resonance of the antenna at the 2.4G frequency band.
Further, in this embodiment, the first antenna component 21 and the second antenna component 22 are both grounded through the ground plate 3, so that a larger grounding area of the whole WiFi antenna is realized, a better grounding effect can be realized, and better radiation is realized; preferably, the distance between the first antenna element 21 and the second antenna element 22 is 16 ± 1.6mm, the distance between the grounding points of the first antenna element 21 and the second antenna element 22 is relatively long, and the grounding point of the second antenna element 22 can be regarded as a far-point grounding point of the main antenna of the WiFi antenna, so that the directivity of the WiFi antenna can be optimized by the far-point grounding point, and the radiation efficiency of the antenna is further improved.
Importantly, the first antenna assembly 21 is a main radiator of a WiFi antenna, and the first antenna assembly 21 is in the form of an IFA antenna; after debugging, the performance of the first antenna assembly 21 reaches the standard in the 2400-2500MHz frequency band, and the 5150-5850MHz frequency band is poor; therefore, the second antenna component 22 is newly added near the first antenna component 21, and the second antenna component 22 is adjusted to have good resonance at 5150-5850 MHz; at this time, the first antenna component 21 is regarded as a main antenna of the WiFi antenna, and the second antenna component 22 is regarded as a parasitic antenna of the main antenna, which assists the main antenna in resonating at the 5150-5850MHz frequency band, thereby improving the radiation efficiency of the WiFi antenna at the 5150-5850MHz frequency band.
| Without parasitic antenna | Adding parasitic antennas | |
| Freq(MHz) | Effi(dB) | Effi(dB) |
| 5150 | -5.85 | -4.64 |
| 5250 | -5.41 | -4.25 |
| 5350 | -5.97 | -4.04 |
| 5470 | -6.34 | -4.22 |
| 5600 | -6.86 | -3.94 |
| 5725 | -6.36 | -4.45 |
| 5785 | -6.79 | -4.86 |
| 5800 | -6.59 | -4.44 |
| 5850 | -7.07 | -5.10 |
TABLE 1 radiation efficiency LUT FOR 5G FREQUENCY BAND before and after adding parasitic antenna to antenna
Table 1 is a comparison table of radiation efficiency at the 5G frequency band before and after the parasitic antenna is added to the WiFi antenna with the parasitic antenna provided in this embodiment, it can be seen from table 1 that the highest efficiency of the WiFi antenna before the parasitic antenna is added can only reach-5.41 dB, and the overall radiation efficiency of the antenna at the 5G frequency band is relatively general; after the parasitic antenna is added, the highest radiation efficiency of the antenna can reach within-4 dB, and the overall radiation efficiency of the WiFi antenna at the 5G frequency band is also better, so that the WiFi antenna integrally realizes very good radiation and can completely meet the requirements.
In summary, the present embodiment provides a WiFi antenna with a parasitic antenna and a terminal, including a substrate and an antenna assembly; the antenna assembly comprises a first antenna assembly and a second antenna assembly; the first antenna component comprises a first radiating structure, a feed point and a first ground point; the feeding point is electrically connected with the first radiation structure; the grounding point is electrically connected with the first radiation structure; the first radiating structure comprises a first antenna branch and a second antenna branch; the second antenna assembly includes a second radiating structure and a second ground point; the second radiation structure is electrically connected with the second grounding point; the second antenna assembly is a parasitic antenna of the WiFi antenna, the second grounding point is a far point grounding point of the WiFi antenna, and the bandwidth of the antenna at a 2.4GHz frequency band section can be controlled, so that the directivity coefficient of the antenna is changed, the problem that the directivity coefficient of the conventional WiFi antenna is weak is solved, and a better radiation effect is realized.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (10)
1. A WiFi antenna with a parasitic antenna is characterized by comprising a substrate, an antenna assembly and a grounding plate;
the antenna assembly comprises a first antenna assembly and a second antenna assembly; the first antenna assembly comprises a first antenna branch, a second antenna branch, a third antenna branch in an inverted L shape and a feed point; the feed point is electrically connected with the second antenna branch node; the first antenna branch is electrically connected with the grounding plate;
the second antenna assembly includes a fourth antenna stub; the fourth antenna stub is electrically connected with the ground plate.
2. The WiFi antenna with parasitic antenna of claim 1, wherein the material of the substrate is FPC or PCB.
3. The WiFi antenna with parasitic antenna of claim 1, wherein the ground plate is copper clad.
4. A WiFi antenna with a parasitic antenna as claimed in claim 1, characterised in that the first antenna component is in the form of an IFA antenna.
5. The WiFi antenna with parasitic antenna of claim 1 wherein the first antenna branch and the third antenna branch are parallel to each other with a gap in between.
6. The WiFi antenna with parasitic antenna of claim 5, wherein the width of the slot is 2 ± 0.2mm.
7. The WiFi antenna with parasitic antenna of claim 1 wherein the length of the first antenna stub is 5.2 ± 0.5mm.
8. The WiFi antenna with parasitic antenna of claim 1, wherein the length of the long side of the second antenna branch is 17.2 ± 0.17mm, and the length of the short side is 3.1 ± 0.3mm.
9. The WiFi antenna with parasitic antenna of claim 1 wherein the distance between the first antenna component and the second antenna component is 16 ± 1.6mm.
10. A terminal characterized in that it comprises a WiFi antenna with a parasitic antenna as claimed in claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221512485.9U CN217562832U (en) | 2022-06-16 | 2022-06-16 | WiFi antenna with parasitic antenna and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221512485.9U CN217562832U (en) | 2022-06-16 | 2022-06-16 | WiFi antenna with parasitic antenna and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217562832U true CN217562832U (en) | 2022-10-11 |
Family
ID=83502030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221512485.9U Active CN217562832U (en) | 2022-06-16 | 2022-06-16 | WiFi antenna with parasitic antenna and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217562832U (en) |
-
2022
- 2022-06-16 CN CN202221512485.9U patent/CN217562832U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 2-101, No. 2 Qianmei Road, Dongkeng Town, Dongguan City, Guangdong Province, 523000 Patentee after: Dongguan Ruixiang XunTong Communication Technology Co.,Ltd. Address before: 523000 building 4, block a, No. 28, Yinying Road, Gaoying village, Dalang Town, Dongguan City, Guangdong Province Patentee before: Dongguan Ruixiang XunTong Communication Technology Co.,Ltd. |