CN211743413U - Multi-band PCB antenna and wireless communication equipment - Google Patents
Multi-band PCB antenna and wireless communication equipment Download PDFInfo
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- CN211743413U CN211743413U CN202020774674.8U CN202020774674U CN211743413U CN 211743413 U CN211743413 U CN 211743413U CN 202020774674 U CN202020774674 U CN 202020774674U CN 211743413 U CN211743413 U CN 211743413U
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Abstract
The utility model relates to a wireless communication technology field, the utility model provides a multifrequency section PCB antenna and wireless communication equipment, above-mentioned multifrequency section PCB antenna includes the base plate, and all locate the ground connection paster on the base plate, the main radiation paster, low frequency radiation paster and inductance, main radiation paster and ground connection paster intercoupling, the low frequency radiation paster passes through the inductance and is connected with the ground connection paster, 2G frequency channel can be compromise simultaneously to above-mentioned multifrequency section PCB antenna, the 3G frequency channel, 4G frequency channel and 5G frequency channel, make wireless communication equipment only need set up a communication antenna and can realize full frequency channel wireless communication, effectively save installation space, be more convenient for carry out reasonable installation overall arrangement to other electronic component in the wireless communication equipment.
Description
Technical Field
The utility model relates to a wireless communication technology field especially provides a multifrequency section PCB antenna and wireless communication equipment.
Background
With the rapid development of wireless communication technology, 5G networks are gradually popularized, and compared with 4G networks, 5G networks have the technical characteristics of higher speed, lower delay and larger capacity. In order to further accelerate the popularization and application of the 5G network, various manufacturers are increasing the research and development of the 5G antenna.
At present, traditional PCB antenna can't cover the 2G frequency channel simultaneously, the 3G frequency channel, 4G frequency channel and 5G frequency channel, for realizing 2G, 3G, 4G, the full frequency channel of 5G covers, traditional wireless communication equipment can set up a 2G \3G \4G antenna and a 5G antenna usually, like this, communication antenna has taken the too much installation space of wireless communication equipment, lead to other electronic component's in the wireless communication equipment installation space to reduce, be unfavorable for other electronic component's installation overall arrangement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multifrequency section PCB antenna and wireless communication equipment aims at solving the technical problem that current PCB antenna can't cover 2G frequency channel, 3G frequency channel, 4G frequency channel and 5G frequency channel simultaneously.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions: a multi-band PCB antenna comprises a substrate, and a ground patch, a main radiation patch, a low-frequency radiation patch and an inductor which are all arranged on the substrate, wherein the main radiation patch is mutually coupled with the ground patch, and the low-frequency radiation patch is connected with the ground patch through the inductor.
The utility model provides a multifrequency section PCB antenna has following beneficial effect at least: the 5G frequency band coverage of the multi-band PCB antenna is achieved through the main radiation patch, the 3G frequency band and the 4G frequency band coverage of the multi-band PCB antenna are achieved through mutual coupling of the main radiation patch and the grounding patch, then the low-frequency radiation patch is arranged, and the low-frequency radiation patch is connected with the grounding patch through the inductor, so that low-frequency radiation current is separated from high-frequency radiation current, and the 2G frequency band coverage of the multi-band PCB antenna is achieved. So, above-mentioned multifrequency section PCB antenna can cover 2G frequency channel, 3G frequency channel, 4G frequency channel and 5G frequency channel simultaneously for wireless communication equipment only needs to set up a communication antenna and can realize full frequency channel wireless communication, effectively saves installation space, is more convenient for carry out reasonable installation overall arrangement to other electronic component in the wireless communication equipment.
In one embodiment, the ground patch has a receiving cavity, and at least a portion of the main radiation patch is received in the receiving cavity.
In one embodiment, a first impedance matching stub is arranged at one end, close to the low-frequency radiation patch, of the ground patch, a low-frequency coupling oscillator is arranged at one end, close to the ground patch, of the low-frequency radiation patch, and the first impedance matching stub and the low-frequency coupling oscillator are connected in a coupling mode.
In one embodiment, the first impedance matching branch is disposed on one side of the ground patch along the width direction of the substrate.
In one embodiment, the main radiating patch is provided with a high-frequency matching stub.
In one embodiment, the ground patch is provided with a second impedance matching stub.
In one embodiment, the second impedance matching branch is disposed on one side of the ground patch along the width direction of the substrate.
In one embodiment, the main radiating patch is in a ladder structure.
In one embodiment, the inductor is a distributed inductor; or, the inductor is a microstrip line, and the microstrip line is of a multi-section bending structure.
In order to achieve the above object, the embodiment of the present invention further provides a wireless communication device, including the above multi-band PCB antenna.
Since the wireless communication device adopts all the embodiments of the multi-band PCB antenna, at least all the advantages of the embodiments are achieved, and no further description is given here.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions 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 to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a multiband PCB antenna provided in an embodiment of the present invention;
fig. 2 is a schematic view of standing wave simulation of the multi-band PCB antenna provided in the embodiment of the present invention;
fig. 3 is a schematic diagram of radiation efficiency of a multi-band PCB antenna provided in an embodiment of the present invention;
FIG. 4 is a radiation pattern of the multi-band PCB antenna provided by the embodiment of the present invention working at 900 MHz;
fig. 5 is a radiation pattern of the multi-band PCB antenna provided by the embodiment of the present invention working at 1700 MHz;
FIG. 6 is a radiation pattern of the multi-band PCB antenna provided by the embodiment of the present invention working at 2600 MHz;
fig. 7 is a radiation pattern of the multi-band PCB antenna provided by the present invention working at 3500 MHz.
Wherein, in the figures, the respective reference numerals:
10. the antenna comprises a substrate, 11, a feed port, 20, a grounding patch, 21, a containing groove, 22, a first impedance matching branch, 23, a second impedance matching branch, 30, a main radiation patch, 31, a high-frequency matching branch, 40, a low-frequency radiation patch, 41, a low-frequency coupling oscillator, 50 and an inductor.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, 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 and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1, a multiband PCB antenna includes a substrate 10, and a ground patch 20, a main radiation patch 30, a low frequency radiation patch 40 and an inductor 50 all disposed on the substrate 10, wherein the main radiation patch 30 and the ground patch 20 are coupled to each other, and the low frequency radiation patch 40 is connected to the ground patch 20 through the inductor 50.
The multi-band PCB antenna realizes the coverage of the 5G frequency band of the multi-band PCB antenna through the main radiation patch 30, realizes the coverage of the 3G frequency band and the 4G frequency band of the multi-band PCB antenna through the mutual coupling of the main radiation patch 30 and the grounding patch 20, and then realizes the coverage of the 2G frequency band of the multi-band PCB antenna by arranging the low-frequency radiation patch 40 and connecting the low-frequency radiation patch 40 with the grounding patch 20 through the inductor 50 so as to separate the low-frequency radiation current from the high-frequency radiation current. So, above-mentioned multifrequency section PCB antenna can cover 2G frequency channel, 3G frequency channel, 4G frequency channel and 5G frequency channel simultaneously for wireless communication equipment only needs to set up a communication antenna and can realize full frequency channel wireless communication, effectively saves installation space, is more convenient for carry out reasonable installation overall arrangement to other electronic component in the wireless communication equipment.
In the present embodiment, as shown in fig. 1, the ground patch 20 has a receiving slot 21, and at least a portion of the main radiation patch 30 is received in the receiving slot 21. By accommodating at least part of the main radiation patch 30 in the accommodating groove 21, the sufficient coupling range between the main radiation patch 30 and the ground patch 20 is effectively ensured, and the multi-band PCB antenna can generate resonance near a resonance frequency point of 2600MHz, so that the multi-band PCB antenna can cover a 3G frequency band and a 4G frequency band more effectively; meanwhile, the layout structure of the multi-band PCB antenna can be more compact, so that the miniaturization of the antenna is realized, and the installation space of the multi-band PCB antenna in the wireless communication equipment is further saved.
Specifically, the resonant frequency of the multi-band PCB antenna at 1710 MHz-2690 MHz can be adjusted by adjusting the distance between the main radiation patch 30 and the ground patch 20, thereby more effectively realizing that the multi-band PCB antenna covers a 3G frequency band and a 4G frequency band.
In this embodiment, please refer to fig. 1, one end of the ground patch 20 close to the low-frequency radiation patch 40 is provided with a first impedance matching branch 22, one end of the low-frequency radiation patch 40 close to the ground patch 20 is provided with a low-frequency coupling oscillator 41, and the first impedance matching branch 22 and the low-frequency coupling oscillator 41 are coupled to each other. The first impedance matching branch 22 is coupled with the low-frequency coupling oscillator 41, so that the resonant frequency of the multi-band PCB antenna at 1800MHz can be adjusted, and the multi-band PCB antenna can cover a 3G frequency band and a 4G frequency band more effectively.
Specifically, as shown in fig. 1, the first impedance matching branch 22 is disposed on one side of the ground patch 20 along the width direction of the substrate 10, so that one end of the ground patch 20 close to the low-frequency radiation patch 40 is bent, thereby effectively reducing the length of the multi-band PCB antenna, making the layout structure of the multi-band PCB antenna more compact, effectively realizing the miniaturization of the antenna, and further saving the installation space of the multi-band PCB antenna in the wireless communication device.
In the present embodiment, please refer to fig. 1, the main radiating patch 30 is provided with a high frequency matching branch 31. The high-frequency matching branch 31 is arranged on the main radiation patch 30, so that the impedance matching of the multi-band PCB antenna in the 3400 MHz-3600 MHz frequency band and the 4800 MHz-4900 MHz frequency band can be adjusted, the good radiation of the multi-band PCB antenna in the high frequency band can be effectively realized, and the multi-band PCB antenna can cover the 5G frequency band more effectively.
In the present embodiment, please refer to fig. 1, the ground patch 20 is provided with a second impedance matching branch 23. The second impedance matching branch 23 is arranged on the grounding patch 20, so that the area of the grounding patch 20 is effectively increased, the impedance matching of the multi-band PCB antenna in the 1710 MHz-2690 MHz frequency band can be adjusted, the low-frequency bandwidth of the multi-band PCB antenna is expanded, and the multi-band PCB antenna can cover the 3G frequency band and the 4G frequency band more effectively.
Specifically, referring to fig. 1, in order to reduce the length of the multi-band PCB antenna, to make the layout structure of the multi-band PCB antenna more compact and to more effectively realize the miniaturization of the antenna, the second impedance matching branch 23 is disposed on one side of the ground patch 20 along the width direction of the substrate 10.
In the present embodiment, please refer to fig. 1, the main radiating patch 30 has a ladder structure. The main radiating patch 30 is designed to be of a stepped structure, so that the impedance transformation process of the multi-band PCB antenna becomes more gradual, and the broadband matching of the multi-band PCB antenna is effectively realized.
In the present embodiment, the inductor 50 is a distributed inductor. The distributed inductor is adopted, and no extra capacitor is required to be connected, so that the production cost of the multi-band PCB antenna can be reduced.
In addition, as shown in fig. 1, the inductor 50 may also be a microstrip line, and the microstrip line has a multi-section bending structure.
Of course, there are various structures of the inductor 50, and the structure of the inductor 50 may be adjusted according to the actual application, and is not limited in detail here.
Specifically, as shown in fig. 1, a feeding port 11 is formed on the substrate, the inner conductor of the coaxial cable is connected to the main radiating patch 30 through the feeding port 11, and the outer conductor of the coaxial cable is connected to the ground patch 20 through the feeding port 11.
Specifically, to reduce the production cost, the substrate 10 is an epoxy resin plate.
Of course, the material of the substrate 10 is various, such as teflon plate, ceramic plate, etc., and is not limited thereto.
Specifically, the thickness of the substrate 10 is 0.8mm, the length is 113mm, and the width is 19mm, so that it can be seen that the whole size of the multi-band PCB antenna is small, and the requirement of antenna miniaturization is effectively realized.
In fig. 2, a mark a indicates a standing wave change indicating line when the multiband PCB antenna operates in a frequency band of 800MHz to 960MHz, a mark b indicates a standing wave change indicating line when the multiband PCB antenna operates in a frequency band of 1710MHz to 2690MHz, a mark c indicates a standing wave change indicating line when the multiband PCB antenna operates in a frequency band of 3400MHz to 3600MHz, and a mark d indicates a standing wave change indicating line when the multiband PCB antenna operates in a frequency band of 4800MHz to 4900 MHz.
In fig. 3, a mark e indicates a change indicating line of radiation efficiency when the multiband PCB antenna operates in a 800MHz to 960MHz frequency band, a mark f indicates a change indicating line of radiation efficiency when the multiband PCB antenna operates in a 1710MHz to 2690MHz frequency band, a mark g indicates a change indicating line of radiation efficiency when the multiband PCB antenna operates in a 3400MHz to 3600MHz frequency band, and a mark h indicates a change indicating line of radiation efficiency when the multiband PCB antenna operates in a 4800MHz to 4900MHz frequency band.
As can be seen from fig. 2 and 3, the standing wave of the multi-band PCB antenna is less than 3.2 when operating in the 800MHz to 960MHz frequency band, and the standing waves of the multi-band PCB antenna are less than 2 when operating in the 1710MHz to 2690MHz frequency band, the 3400MHz to 3600MHz frequency band, and the 4800MHz to 4900MHz frequency band; in addition, the radiation efficiency of the multi-band PCB antenna working in the 800 MHz-960 MHz frequency band is more than 93%, the radiation efficiency of the multi-band PCB antenna working in the 1710 MHz-2690 MHz frequency band is more than 90%, the radiation efficiency of the multi-band PCB antenna working in the 3400 MHz-3600 MHz frequency band is more than 95%, and the radiation efficiency of the multi-band PCB antenna working in the 4800 MHz-4900 MHz frequency band is more than 97%; as can be seen from fig. 4 to 7, the multi-band PCB antenna has omnidirectional radiation characteristics when operating in a low frequency band, and the directional pattern is cracked when operating in a high frequency band, however, the emphasis of the antenna operating in a 5G frequency band is on the radiation efficiency of the antenna, and the requirement on the omnidirectional performance of the antenna is not high. Therefore, the multi-band PCB antenna can effectively cover a 2G frequency band, a 3G frequency band, a 4G frequency band and a 5G frequency band.
A wireless communication device comprises the multi-band PCB antenna.
Since the wireless communication device adopts all the embodiments of the multi-band PCB antenna, at least all the advantages of the embodiments are achieved, and no further description is given here.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A multi-band PCB antenna, characterized by: including the base plate, and all locate ground connection paster, main radiation paster, low frequency radiation paster and inductance on the base plate, main radiation paster with ground connection paster intercoupling, the low frequency radiation paster passes through the inductance with ground connection paster is connected.
2. The multi-band PCB antenna of claim 1, wherein: the grounding patch is provided with a containing groove, and at least part of the main radiation patch is contained in the containing groove.
3. The multi-band PCB antenna of claim 1, wherein: the low-frequency radiation patch is characterized in that one end, close to the low-frequency radiation patch, of the ground patch is provided with a first impedance matching branch, one end, close to the ground patch, of the low-frequency radiation patch is provided with a low-frequency coupling oscillator, and the first impedance matching branch is in coupling connection with the low-frequency coupling oscillator.
4. The multi-band PCB antenna of claim 3, wherein: the first impedance matching branch is arranged on one side of the grounding patch along the width direction of the substrate.
5. The multi-band PCB antenna of claim 1, wherein: the main radiation patch is provided with a high-frequency matching branch.
6. The multi-band PCB antenna of claim 1, wherein: the ground patch is provided with a second impedance matching stub.
7. The multi-band PCB antenna of claim 6, wherein: the second impedance matching branch is arranged on one side of the grounding patch along the width direction of the substrate.
8. The multi-band PCB antenna of any of claims 1-7, wherein: the main radiation patch is of a ladder structure.
9. The multi-band PCB antenna of any of claims 1-7, wherein: the inductor is a distributed inductor; or, the inductor is a microstrip line, and the microstrip line is of a multi-section bending structure.
10. A wireless communication device, characterized by: including the multi-band PCB antenna of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020774674.8U CN211743413U (en) | 2020-05-12 | 2020-05-12 | Multi-band PCB antenna and wireless communication equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020774674.8U CN211743413U (en) | 2020-05-12 | 2020-05-12 | Multi-band PCB antenna and wireless communication equipment |
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| CN211743413U true CN211743413U (en) | 2020-10-23 |
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| CN202020774674.8U Active CN211743413U (en) | 2020-05-12 | 2020-05-12 | Multi-band PCB antenna and wireless communication equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113771A (en) * | 2021-03-15 | 2021-07-13 | 深圳市有方科技股份有限公司 | Multi-band antenna structure |
| CN115084838A (en) * | 2021-03-12 | 2022-09-20 | 广东侨华科技有限公司 | Multi-band antenna and wireless communication equipment |
-
2020
- 2020-05-12 CN CN202020774674.8U patent/CN211743413U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084838A (en) * | 2021-03-12 | 2022-09-20 | 广东侨华科技有限公司 | Multi-band antenna and wireless communication equipment |
| CN113113771A (en) * | 2021-03-15 | 2021-07-13 | 深圳市有方科技股份有限公司 | Multi-band antenna structure |
| CN113113771B (en) * | 2021-03-15 | 2023-09-01 | 深圳市有方科技股份有限公司 | Multi-Band Antenna Structure |
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