CN109244657B - Printed antenna structure, PCB and electronic equipment - Google Patents
Printed antenna structure, PCB and electronic equipment Download PDFInfo
- Publication number
- CN109244657B CN109244657B CN201811290106.4A CN201811290106A CN109244657B CN 109244657 B CN109244657 B CN 109244657B CN 201811290106 A CN201811290106 A CN 201811290106A CN 109244657 B CN109244657 B CN 109244657B
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- 230000005855 radiation Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000011889 copper foil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- LAXBNTIAOJWAOP-UHFFFAOYSA-N 2-chlorobiphenyl Chemical compound ClC1=CC=CC=C1C1=CC=CC=C1 LAXBNTIAOJWAOP-UHFFFAOYSA-N 0.000 description 2
- 101710149812 Pyruvate carboxylase 1 Proteins 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Support Of Aerials (AREA)
Abstract
The invention discloses a printed antenna structure, a PCB and electronic equipment, wherein the printed antenna structure comprises a signal input end, at least one radiating arm and a grounding end, wherein the signal input end is printed on the PCB, the signal input end is used for being connected with a WIFI module on the PCB, the signal input end is connected with the radiating arm, the radiating arm is used for receiving and radiating signals, and the radiating arm is connected with the grounding end. The radiating arm comprises a low-frequency radiating arm and a high-frequency radiating arm, one side of the high-frequency radiating arm is connected with the signal input end, and the other side of the high-frequency radiating arm is simultaneously connected with one end of the low-frequency radiating arm and the grounding end. The invention effectively solves the problems that the existing antenna needs to keep antenna materials and can not simultaneously receive and radiate high-frequency signals and low-frequency signals.
Description
Technical Field
The present invention relates to the field of antennas, and in particular, to a printed antenna structure, a PCB board, and an electronic device.
Background
With the continuous development of electronic equipment technology and the popularization of WIFI functions, WIFI antennas become a conventional device of electronic equipment.
The existing antennas of the electronic devices mainly comprise an internal antenna and an external antenna, and the external antenna has the defects of heavy antenna equipment, influence on the appearance of products, high cost and the like, so that the existing antennas are gradually replaced by the arrangement mode of the internal antenna. Common built-in antennas include antenna platelets with coaxial feed lines and on-board cards or patch antennas. The antenna small plate with the coaxial feeder line is required to process the coaxial feeder line and the antenna body into a natural assembly, and the antenna is fixed at a preset position on the inner surface of the electronic equipment structure in the whole assembly production line; the on-board plug-in or patch antenna needs to reserve the position of the antenna when the product is produced, so that the antenna installation procedure of coaxial lines and production lines is omitted, but the antenna body is required to be plugged or SMT (Surface Mount Technology) to be attached to a PCB (Printed Circuit Board) main board, and then the assembly of the antenna is completed through wave soldering or reflow soldering.
Also, in the related art, no printed antenna capable of simultaneously possessing reception and radiation of a 5G signal (high frequency) and reception and radiation of a 2.4G signal (low frequency) exists in the current electronic devices. Therefore, it is necessary to provide a new printed antenna structure, PCB board and electronic device to solve the above technical problems.
Disclosure of Invention
The invention mainly aims to provide a printed antenna structure, a PCB and electronic equipment, and aims to solve the problems that antennas in the prior art all retain antenna materials and cannot simultaneously receive and radiate high-frequency signals and low-frequency signals.
In order to achieve the above purpose, the printed antenna structure provided by the invention comprises a signal input end, at least one radiation arm and a grounding end, wherein the signal input end is printed on a PCB (printed circuit board), the signal input end is used for being connected with a WIFI module on the PCB, the signal input end is connected with the radiation arm, the radiation arm is used for receiving and radiating signals, and the radiation arm is connected with the grounding end;
the radiating arm comprises a low-frequency radiating arm and a high-frequency radiating arm, one side of the high-frequency radiating arm is connected with the signal input end, and the other side of the high-frequency radiating arm is simultaneously connected with one end of the low-frequency radiating arm and the grounding end.
Preferably, the high-frequency radiating arm includes a first radiating arm and a second radiating arm, the first radiating arm is formed with a large end and a small end, the second radiating arm is a rectangular radiating arm and is formed with two long sides and two short sides, the large end of the first radiating arm is connected with the long sides of the second radiating arm, one of the short sides of the second radiating arm is connected with the signal input end, and the other short side of the second radiating arm is connected with the grounding end.
Preferably, the printed antenna structure further comprises a tuning arm printed on the PCB board, and the tuning arm is connected with the low-frequency radiation arm.
Preferably, the printed antenna structure further comprises a low frequency tuner connected to both the tuning arm and the low frequency radiating arm.
Preferably, the low-frequency radiating arm comprises a third radiating arm and a fourth radiating arm, the third radiating arm and the fourth radiating arm are both straight strip radiating arms, the width of the third radiating arm is larger than that of the fourth radiating arm, the first end of the third radiating arm is connected with the first end of the fourth radiating arm, the second end of the third radiating arm is simultaneously connected with the short side of the second radiating arm and the grounding end, and the second end of the fourth radiating arm is connected with the tuning arm through the low-frequency tuner.
Preferably, the printed antenna structure further comprises a grounding connection arm printed on the PCB board, a first end of the grounding connection arm is connected with the grounding end, and a second end of the grounding connection arm is connected with the radiation arm.
Preferably, the printed antenna structure further comprises a common ground printed on the PCB board, the common ground being connected with the first end of the ground connection arm.
Preferably, the printed antenna structure includes a high frequency tuner, and the high frequency radiating arm is connected to the common ground through the high frequency tuner.
In addition, the invention also provides a PCB provided with the printed antenna structure.
In addition, the invention also provides electronic equipment, which is provided with the PCB.
According to the technical scheme, the printed antenna structure is arranged on the PCB in a printing mode, so that the material cost and the processing cost of the antenna in the electronic equipment are reduced, and the production efficiency is improved. Meanwhile, the printed antenna structure comprises a signal input end, at least one radiation arm and a grounding end, wherein the signal input end can be connected with a WIFI module on a PCB board and can be used for radiating WIFI signals, and the radiation arm comprises a high-frequency radiation arm and a low-frequency radiation arm for receiving and radiating the signals, so that the radiation efficiency of the printed antenna structure is improved, and the use scene of the printed antenna structure is also increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first embodiment of a printed antenna structure according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of a printed antenna structure according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a third embodiment of a printed antenna structure according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a fourth embodiment of a printed antenna structure according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a fifth embodiment of a printed antenna structure according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first embodiment of a PCB board according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a second embodiment of a PCB board according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a third embodiment of a PCB board according to an embodiment of the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Moreover, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present invention.
The invention provides a printed antenna structure, a PCB and electronic equipment, and aims to solve the problems that antennas in the prior art all retain antenna materials and cannot simultaneously receive and radiate high-frequency signals and low-frequency signals.
It should be noted that, the printed antenna structure 100 provided in the embodiment of the present invention is set on the PCB board 1 in a printed form, the PCB board 1 may be an FR4 board (FR-4 epoxy glass cloth laminated board), the thickness of the PCB board 1 may be set between 1mm and 1.6mm, meanwhile, the printed antenna structure 100 is a copper foil printed on the PCB board 1, the thickness of the copper foil may be set between 0.01 and 0.05mm, and various circuit function modules (not shown), control modules (not shown), WIFI modules (not shown), bluetooth modules (not shown) and the like required by electronic devices may be set on the PCB board 1.
Preferably, the printed antenna structure 100 provided by the embodiment of the present invention is based on the improvement that the thickness of the PCB board 1 is 1.6mm, and of course, when the thickness of the PCB board 1 is between 1mm and 1.6mm and other thicknesses less than 1mm and greater than 1.6mm are formed, the embodiment can also take the proposal and achieve the same beneficial effects.
As shown in fig. 1, a first embodiment of a printed antenna structure 100 according to an embodiment of the present invention includes a signal input end 10, at least one radiating arm (not labeled), and a ground end 90, which are all printed on a PCB board 1, wherein the signal input end 10 is used for connecting with a WIFI module on the PCB board 1, and the signal input end 10 is connected with the radiating arm, and meanwhile, the radiating arm is used for receiving and radiating signals, and the radiating arm is connected with the ground end 90.
In a preferred embodiment, the radiating arm includes a low frequency radiating arm 30 and a high frequency radiating arm 20, one side of the high frequency radiating arm 20 is connected to the signal input terminal 10, and the other side of the high frequency radiating arm 20 is connected to both one end of the low frequency radiating arm 30 and the ground terminal 90. In this embodiment, the high-frequency radiating arm 20 and the low-frequency radiating arm 30 are connected to a control module, the signal input end 10 receives a signal, the received signal is sent to the control module, the control module processes the signal received from the signal input end 10, controls the electronic device according to the processed signal, and sends the signal to the radiating arm, and the radiating arm radiates the signal to be transmitted. And moreover, the radiating arm can be made of copper or copper foil and other materials, so that the applicability of the materials is high, and other antenna materials are not needed, thereby reducing the material cost. Meanwhile, the signal input end 10 is connected with the WIFI module on the PCB 1 through a radio frequency transmission line (microstrip line), so that the receiving and transmitting of WIFI signals are realized.
Referring to fig. 1 again, the high-frequency radiating arm 20 includes a first radiating arm 21 and a second radiating arm 22, the first radiating arm 21 is formed with a large end 211 and a small end 212, and the second radiating arm 222 is a rectangular radiating arm formed with two long sides 221 and two short sides 222. And the large end 211 of the first radiating arm 21 is connected to the long side 221 of the second radiating arm 22, one of the short sides 222 of the second radiating arm 22 is connected to the signal input terminal 10, and the other short side 222 of the second radiating arm 22 is connected to the ground terminal 90. In this embodiment, the first radiating arm 21 is in a right trapezoid shape, the second radiating arm is in a rectangular radiating arm, and the radiating arm adopting such a shape is used for increasing the area of the high-frequency radiating arm 20 printed on the PCB board 1, so that the high-frequency radiating arm 20 works in 5150-5850MHZ frequency band, and can receive and radiate 5G signals, and further, the defect that the current printed antenna cannot receive and radiate 5G signals can be overcome. In other embodiments, the shape of the first radiating arm 21 may be isosceles trapezoid, and the second radiating arm may be square, and the areas of the first radiating arm 21 and the second radiating arm 22 may be required to satisfy the requirement that the high-frequency radiating arm 20 operates in 5150-5850 MHZ.
In addition, since the performance of the antenna is an important factor for ensuring reliable radio communication, which requires frequent adjustment in use, the printed antenna structure 100 further comprises a tuning arm 40 printed on the PCB board 1, the tuning arm 40 being connected to the low frequency radiating arm 30. The printed antenna structure 100 further includes a low frequency tuner 50, and the low frequency tuner 50 is connected to both the tuning arm 40 and the low frequency radiating arm 30. The low frequency tuner may be tuned using a resistor, capacitor, inductor, or the like, and the low frequency radiating arm 30 may be connected to the tuning arm 40 to increase the length of the low frequency radiating arm to adjust the resonant center frequency while also improving the compatibility of the printed antenna structure 100.
Preferably, the low frequency radiating arm 30 includes a third radiating arm 31 and a fourth radiating arm 32, and the third radiating arm 31 and the fourth radiating arm 32 are both straight radiating arms, and the width of the third radiating arm 31 is greater than the width of the fourth radiating arm 32. Meanwhile, the first end of the third radiating arm 31 is connected to the first end of the fourth radiating arm 32, the second end of the third radiating arm 31 is connected to the ground 90, the second end of the third radiating arm 31 is connected to the short side 222 of the second radiating arm 22 and the ground 90 at the same time, and the second end of the fourth radiating arm 32 is connected to the tuning arm 40 through the low frequency tuner 50. In this embodiment, the third radiating arm 31 and the fourth radiating arm 32 are each straight radiating arms, and are shaped so that the low frequency radiating arm 20 operates in the 2400-2500MHZ band to receive and radiate 2.4G signals. The printed antenna structure 100 enables the high-frequency and low-frequency simultaneous printing and the whole occupied area on the PCB 1 to be small, the space utilization rate of the PCB is improved, the input impedance of the antenna of the printed antenna structure 100 is 50 ohms, the voltage standing wave ratio VSWR is smaller than 2, the radiation efficiency reaches 45%, and the Peak gain is larger than 2dBi.
Further, the printed antenna structure further comprises a grounding connection arm 60 printed on the PCB board 1 and connected to the grounding end 90, a first end of the grounding connection arm 60 is connected to the grounding end 90, and a second end of the grounding connection arm 60 is connected to the radiating arm. Specifically, the first end of the ground connection arm 60 is connected to the ground terminal 90, and the second end of the ground connection arm 60 is connected to the long side 221 of the second radiation arm 22. In the preferred embodiment, the ground connection arms 50 are straight bar-shaped connection arms, while in other embodiments the ground connection arms 60 may be provided as other shaped connection arms such as beveled corners or arcs.
It should be noted that, the total length of the high-frequency radiating arm 20 and the low-frequency radiating arm 30 is 70% -80% of the quarter wavelength of the working frequency, the total length of the low-frequency radiating arm 30 is set at 24±2mm, the total length of the high-frequency radiating arm 20 is set at 12±2mm, the widths of the grounding connecting arm 70, the low-frequency radiating arm 30 and the tuning arm 40 can be selected between 0.5 mm and 3mm, and the larger the value is, the larger the working bandwidth of the low-frequency band is, the user can select according to the required bandwidth.
In addition, the printed antenna structure 100 further includes a common ground 70 printed on the PCB board, and the common ground 70 is connected to the first end of the ground connection arm 60. The common ground is also a mirror image of the printed antenna structure 100, and the common ground 60 is GND (ground) copper foil, which is an electrical conductor of the PCB board 1 and is easily adhered to an insulating layer.
Further, the printed antenna structure 100 further includes a high frequency tuner 80, and the high frequency radiating arm 20 is connected to the common ground 70 through the high frequency tuner 80, thereby enhancing the tuning efficiency of the high frequency radiating arm 20, and further enhancing the radiation efficiency of the printed antenna structure 100. Meanwhile, since the tuning arm 40, the high-frequency tuner 80, and the low-frequency tuner 50 are provided on the high-frequency radiating arm 20 and the low-frequency radiating arm 30, the compatibility of the printed antenna structure 100 can be improved.
The present invention further provides a second embodiment of the printed antenna structure 100, please refer to fig. 2, in this second embodiment, the widths of the third radiating arm 31 and the fourth radiating arm 32 may be set to be uniform according to the structural arrangement of the PCB board 1 or the specific requirements of the product, and the third radiating arm 31 and the fourth radiating arm 32 with uniform widths may achieve the same technical effect.
The present invention further provides a third embodiment of the printed antenna structure 100, please refer to fig. 3, in this third embodiment, the grounding connection arm 90 may be configured in a diagonal shape (as shown in fig. 2) or an arc shape (not shown) according to the structural arrangement of the PCB board 1 or the specific requirements of the product, and the same technical effect may be achieved by the diagonal or arc-shaped grounding connection arm 50.
In addition, referring to fig. 4, in the fourth embodiment, since some antennas only need to operate in some fixed frequency bands, the tuning arm 40, the low-frequency tuner 50, the high-frequency tuner 80, and the like can be omitted when the antenna is printed, so that the printed antenna structure 100 can satisfy both the signal receiving and the signal radiation in the high frequency band and the low frequency band, and also can satisfy the requirements of special situations such as not requiring the antenna to perform frequency modulation only in some fixed frequency bands.
In addition, the present invention also provides a fifth embodiment of the printed antenna structure 100, please refer to fig. 5, in which the high-frequency radiating arm 20 is a triangle radiating arm, and the triangle radiating arm can achieve the same technical effects.
Further, referring to fig. 6, the present invention further provides a PCB board 1, and the PCB board 1 is provided with a printed antenna structure 100. In this embodiment, the printed antenna structure 100 is disposed at the upper left corner of the PCB board 1, and in other embodiments, as shown in fig. 7 and 8, for example, the printed antenna structure 100 may be disposed at four corners or four edges of the PCB board, which has the same technical effect.
Still further, the present invention also provides an electronic device, and the electronic device is provided with the PCB board 1. The electronic device adopts all the technical schemes of all the embodiments, so that the electronic device has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (9)
1. The printed antenna structure is characterized by comprising a signal input end, at least one radiation arm and a grounding end which are all printed on a PCB, wherein the signal input end is used for being connected with a WIFI module on the PCB, the signal input end is connected with the radiation arm, the radiation arm is used for receiving and radiating signals, and the radiation arm is connected with the grounding end;
the radiating arm comprises a low-frequency radiating arm and a high-frequency radiating arm, one side of the high-frequency radiating arm is connected with the signal input end, and the other side of the high-frequency radiating arm is simultaneously connected with one end of the low-frequency radiating arm and the grounding end; the high-frequency radiating arm comprises a first radiating arm and a second radiating arm, wherein the first radiating arm is provided with a large end and a small end, the second radiating arm is a rectangular radiating arm and is provided with two long sides and two short sides, the large end of the first radiating arm is connected with the long sides of the second radiating arm, one short side of the second radiating arm is connected with the signal input end, and the other short side of the second radiating arm is connected with the grounding end.
2. The printed antenna structure of claim 1, further comprising a tuning arm printed on the PCB, the tuning arm being connected to the low frequency radiating arm.
3. The printed antenna structure of claim 2, wherein the printed antenna structure further comprises a low frequency tuner coupled to both the tuning arm and the low frequency radiating arm.
4. The printed antenna structure of claim 3, wherein the low frequency radiating arm comprises a third radiating arm and a fourth radiating arm, the third radiating arm and the fourth radiating arm are each a straight strip radiating arm, a width of the third radiating arm is greater than a width of the fourth radiating arm, a first end of the third radiating arm is connected with a first end of the fourth radiating arm, a second end of the third radiating arm is connected with a short side of the second radiating arm and the ground terminal at the same time, and a second end of the fourth radiating arm is connected with the tuning arm through the low frequency tuner.
5. The printed antenna structure of any of claims 1-4, further comprising a ground connection arm printed on the PCB, a first end of the ground connection arm being connected to the ground terminal and a second end of the ground connection arm being connected to the radiating arm.
6. The printed antenna structure of claim 5, further comprising a common ground printed on the PCB, the common ground being connected to the first end of the ground connection arm.
7. The printed antenna structure of claim 6, wherein the printed antenna structure includes a high frequency tuner, the high frequency radiating arm being connected to the common ground through the high frequency tuner.
8. A PCB board, characterized in that the printed antenna structure according to any one of claims 1-7 is provided on the PCB board.
9. An electronic device, characterized in that the electronic device is provided with a PCB board as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811290106.4A CN109244657B (en) | 2018-10-31 | 2018-10-31 | Printed antenna structure, PCB and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811290106.4A CN109244657B (en) | 2018-10-31 | 2018-10-31 | Printed antenna structure, PCB and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109244657A CN109244657A (en) | 2019-01-18 |
| CN109244657B true CN109244657B (en) | 2023-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811290106.4A Active CN109244657B (en) | 2018-10-31 | 2018-10-31 | Printed antenna structure, PCB and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109244657B (en) |
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