CN217468806U - Dual-band WiFi antenna and wireless communication device - Google Patents
Dual-band WiFi antenna and wireless communication device Download PDFInfo
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- CN217468806U CN217468806U CN202221762647.4U CN202221762647U CN217468806U CN 217468806 U CN217468806 U CN 217468806U CN 202221762647 U CN202221762647 U CN 202221762647U CN 217468806 U CN217468806 U CN 217468806U
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Abstract
The utility model discloses a wiFi antenna and wireless communication device of dual-band belongs to the antenna structure field, including the base plate, form high frequency branch and low frequency branch on the base plate, high frequency branch with low frequency branch is formed respectively in two back of the body of base plate are on the surface mutually, the perforating hole has been seted up on the base plate, high frequency branch warp the perforating hole with low frequency branch electric connection. The utility model discloses a wiFi antenna and wireless communication device of dual-band adopts two-sided antenna structure to arrange, distributes high frequency branch and low frequency branch respectively on two back of the body mutually of base plate on the surface to set up the perforating hole and be connected low frequency branch and high frequency branch, improve the efficiency of high frequency, compensate prior art's defect, and have simple structure's advantage.
Description
Technical Field
The utility model relates to an antenna structure technical field especially relates to a wiFi antenna and wireless communication device of dual-band.
Background
"Wi-Fi" is often written as "WiFi" or "WiFi," also known as a "mobile hotspot," which functions to wirelessly connect network-connectable devices to each other.
At present, referring to the attached drawing 1 of the specification, the existing WiFi antenna is formed on the printed circuit board 1, mostly adopting a single-layer structure, and adopting a planar inverted "F" structure, that is, adopting a method of surrounding the high-frequency branch 3 by the low-frequency branch 2 to realize dual-frequency.
However, in the conventional structure of the prior art, since the high frequency branch 3 is within the surrounding range of the low frequency branch 2, the height of the high frequency branch 3 is limited by the total height of the WiFi antenna, so that the efficiency of the high frequency is low.
Therefore, the WiFi antenna structure of the prior art needs to be optimized for this drawback and applied in the wireless communication device to improve the efficiency of high frequency.
SUMMERY OF THE UTILITY MODEL
In order to overcome at least one kind of defect in the prior art, an object of the utility model is to provide a dual-band wiFi antenna to solve the problem that the high frequency efficiency of wiFi antenna is on the low side among the prior art.
Another object of the present invention is to provide a wireless communication device to solve the problem of low high frequency efficiency of the WiFi antenna in the wireless communication device in the prior art.
The utility model discloses a solve the technical scheme that its problem adopted and be:
according to an aspect of the embodiment of the utility model provides a wiFi antenna of dual band, including base plate, circuit board stratum, high frequency branch and low frequency branch, the high frequency branch is used for producing first wiFi frequency channel signal, and the low frequency branch is used for producing second wiFi frequency channel signal, and wherein the frequency that first wiFi frequency channel signal used is higher than the frequency that second wiFi frequency channel signal used, and the high frequency branch is formed with the low frequency branch respectively two back of the body of base plate carry on the back on the body on the surface, seted up the perforating hole on the base plate, the high frequency branch is through perforating hole and low frequency branch electric connection.
Preferably, the substrate is further provided with a matching branch, the matching branch is located on the surface of one side where the high-frequency branch is located or the surface of one side where the low-frequency branch is located, and the matching branch is used for performing impedance matching design to adjust signal frequency.
Preferably, the matching branch is located on the surface of the side where the high-frequency branch is located, and the matching branch is electrically connected with the high-frequency branch.
Preferably, the substrate is further provided with a matching circuit reserved area, the matching circuit reserved area comprises a capacitor mounting area and an inductor mounting area, conductive welding spots electrically connected with a circuit board stratum on the substrate are arranged in the capacitor mounting area and the inductor mounting area, and the inductor mounting area is used for mounting an inductor element.
Preferably, the high-frequency branch section comprises a first structure section and a second structure section, the first structure section is electrically connected with the circuit board stratum on the substrate, the second structure section is orthogonally connected with the first structure section, and the second structure section is arranged close to the edge of the substrate.
Preferably, the length of the first structure section is 5 mm-10 mm, and the length of the second structure section is 15 mm-20 mm.
Preferably, the length of the first structural section is 8mm and the length of the second structural section is 18 mm.
Preferably, the length of the low-frequency branch is 10mm to 20 mm.
Preferably, the length of the low frequency branches is 15 mm.
Preferably, the low frequency branches are located on the front and back sides of the second structure section.
Preferably, the frequency used by the first WiFi frequency band signal is between 5.1GHz and 5.9GHz, and the frequency used by the second WiFi frequency band signal is between 2.45GHz and 2.5 GHz.
The embodiment of the utility model provides a further aspect provides a wireless communication device, including foretell dual-band's wiFi antenna.
According to the above technical scheme, the embodiment of the utility model provides an at least have following advantage and positive effect:
1) the double-sided antenna structure is arranged, the high-frequency branches and the low-frequency branches are respectively distributed on two back-to-back surfaces of the substrate, and the through holes are formed to connect the low-frequency branches with the high-frequency branches, so that the height of the high-frequency branches can be increased, the high-frequency branches are not limited by the height of the low-frequency branches, the high-frequency efficiency is improved, the efficiency of the antenna is improved, the defects of the prior art are overcome, in addition, the double-sided structure arrangement is favorable for increasing the flexibility of circuit arrangement, and the double-sided antenna structure has the advantage of simple structure;
2) a matching branch or a matching circuit reserved area is arranged for later debugging, so that debugging is facilitated;
3) the wireless communication device has the improved dual-band WiFi antenna structure, can improve the high-frequency efficiency, makes up the defects of the prior art, and has the advantages of simple structure and convenient circuit debugging.
Drawings
Fig. 1 is a conventional WiFi antenna structure in the prior art;
fig. 2 is a schematic front structural diagram of a dual-band WiFi antenna according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a back side structure of a dual-band WiFi antenna according to an embodiment of the present invention;
fig. 4 is a schematic front view of a dual-band WiFi antenna according to another embodiment of the present invention;
fig. 5 is a diagram of an antenna parameter simulation result of the dual-band WiFi antenna in one embodiment of the present invention.
Wherein the reference numerals have the following meanings:
1. a printed circuit board; 2. a low frequency branch node; 3. high-frequency branches; 31. a first structural section; 32. a second structural section; 4. a substrate; 41. a circuit board ground layer; 5. a through hole; 6. matching branch knots; 7. a matching circuit reserved area; 71. a capacitor mounting area; 72. an inductor mounting area; 73. and (6) conductive welding spots.
Detailed Description
For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
Referring to fig. 2 to 3, the utility model discloses a wiFi antenna of dual band, including base plate 4, circuit board stratum 41, high frequency minor matters 3 and low frequency minor matters 2, circuit board stratum 41 be used for with high frequency minor matters 3 and 2 electric connection of low frequency minor matters for produce the resonance for high frequency minor matters 3 and low frequency minor matters 2 and provide the signal of telecommunication, high frequency minor matters 3 are used for producing first wiFi frequency channel signal, low frequency minor matters 2 are used for producing second wiFi frequency channel signal, wherein, the frequency that first wiFi frequency channel signal used is higher than the frequency that second wiFi frequency channel signal used.
It will be understood by those skilled in the art that the high frequency branch 3 and the low frequency branch 2 are typically a metal wire for receiving or transmitting out an antenna signal of a specific frequency band.
Preferably, the utility model discloses in, the frequency that first wiFi frequency channel signal used is 5.1GHz ~ 5.9GHz, and the frequency that second wiFi frequency channel signal used is 2.45GHz ~ 2.5 GHz.
In this embodiment, the high frequency branch 3 and the low frequency branch 2 are both formed on the substrate 4, and the high frequency branch 3 and the low frequency branch 2 are respectively located on two opposite surfaces of the substrate 4, that is, one of the high frequency branch 3 and the low frequency branch 2 is located on the front surface of the substrate 4, and the other is located on the back surface of the substrate 4.
The substrate 4 is provided with a through hole 5, and the high-frequency branch 3 is electrically connected with the low-frequency branch 2 through the through hole 5.
The dual-band WiFi antenna adopts a double-sided antenna structure arrangement, the high-frequency branches 3 and the low-frequency branches 2 are respectively distributed on two opposite surfaces of the substrate 4, and the through holes 5 are arranged to connect the low-frequency branches 2 with the high-frequency branches 3, so that the height of the high-frequency branches 3 can be increased, the high-frequency branches are not limited by the height of the low-frequency branches 2, the high-frequency efficiency is improved, and the efficiency of the antenna is improved.
FIG. 5 is a simulation plot of S parameters (antenna reflection parameters) for a WiFi antenna structure of the present invention, wherein the ordinate is the S parameters in dB; the abscissa is frequency in GHz.
As can be seen from fig. 5, the double-sided antenna arrangement structure of the present invention can cover 2.4GHz and 5GHz bands of WiFi and meet the requirement of engineering that the S parameter is less than-6 dB; however, if the antenna structure arrangement scheme with double surfaces is not adopted, the antenna cannot achieve the optimal effect in two frequencies (2.4GHz and 5GHz frequency bands).
Preferably, the substrate 4 can be a glass fiber epoxy resin copper clad laminate.
In a preferred embodiment, the substrate 4 is further provided with a matching branch 6, the matching branch 6 is located on a surface of the high-frequency branch 3 or a surface of the low-frequency branch 2, and the matching branch 6 is used for impedance matching design to adjust the signal frequency.
The matching branch 6 is a conductive copper sheet, and the area of the copper sheet is changed to perform impedance matching design, so that the adjustment of the signal frequency (namely the frequency of the first Wifi frequency band signal or the frequency of the second Wifi frequency band signal) becomes possible by reserving the area of the matching branch 6.
Further, referring to fig. 2, in the embodiment, the matching branch 6 is located on the surface of the side where the high-frequency branch 3 is located, and the matching branch 6 is electrically connected to the high-frequency branch 3.
Through setting up like this, be convenient for in the practical application process, carry out adaptability to the low frequency and adjust.
Referring to fig. 4, as a possible implementation manner, a matching circuit reserved area 7 is further disposed on the substrate 4, the matching circuit reserved area 7 includes a capacitor mounting area 71 and an inductor mounting area 72, a conductive solder 73 electrically connected to the circuit board ground layer 41 on the substrate 4 is disposed in each of the capacitor mounting area 71 and the inductor mounting area 72, and the inductor mounting area 72 is used for mounting an inductor element.
Therefore, by arranging the matching circuit reserved area 7, the possibility of increasing a capacitance and/or inductance adjusting circuit during debugging can be provided, the debugging is convenient, namely, the frequency of the antenna resonance point can be changed and the bandwidth can be widened by adjusting the numerical value of a capacitance and/or inductance parameter element, so that the antenna can obtain better port matching in a required specific frequency band; the resonant frequency is not required to be changed by designing a complex antenna shape, the shape of the antenna is simplified, the antenna is easier to process and debug, and the method is beneficial to controlling the cost and facilitating the batch production and processing.
The structure and principle of the adjusting circuit specifically using the capacitor and the inductor can refer to the prior art, and this embodiment is not described herein again.
In a preferred embodiment, the high frequency branch 3 includes a first structure segment 31 and a second structure segment 32, the first structure segment 31 is electrically connected to the circuit board layer 41 on the substrate 4, the second structure segment 32 is orthogonally connected to the first structure segment 31, and the second structure segment 32 is disposed near the edge of the substrate 4.
Preferably, the length of the first structure section 31 is 5mm to 10mm, and the length of the second structure section 32 is 15mm to 20 mm.
Of course, the first structure section 31 and the second structure section 32 may also be connected at an angle other than orthogonal, for example, the angle of the first structure section 31 and the second structure section 32 is a, 0 ° < a < 90 °, or 90 ° < a < 180 °.
Preferably, the length of the first structure section 31 is 8mm and the length of the second structure section 32 is 18 mm.
Of course, in other possible embodiments, the lengths of the first structure section 31 and the second structure section 32 are adjusted appropriately according to actual application requirements.
In a preferred embodiment, the length of the low frequency branches 2 is 10mm to 20 mm.
Preferably, the length of the low frequency branches 2 is 15 mm.
Similarly, in other possible embodiments, the length of the high-frequency branch 3 is appropriately adjusted according to the actual application requirement.
As a preferred embodiment, referring to fig. 3, the low frequency branch 2 is located on the front and back of the second structure section 32.
To sum up, the utility model discloses a dual-band's wiFi antenna adopts double-sided structural design for high frequency branch 3 highly do not receive the high restriction of low frequency branch 2, thereby improve the efficiency of high frequency, and then improve the efficiency of antenna, adopt the utility model discloses a dual-band's wiFi antenna can cover wiFi's 2.4GHz and 5GHz frequency channel, satisfies the in-service use needs.
Example 2
This embodiment provides a wireless communication device, which includes the dual-band WiFi antenna of any one of the above embodiments 1.
The wireless communication device of the present invention, by using the improved dual-band WiFi antenna structure, certainly has the technical effects that can be achieved in embodiment 1, and will not be described herein again.
The wireless communication device may be a wireless router.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a dual-band WiFi antenna, includes base plate (4), circuit board stratum (41), low frequency branch knot (2) and high frequency branch knot (3), high frequency branch knot (3) are used for producing first WiFi frequency channel signal, low frequency branch knot (2) are used for producing second WiFi frequency channel signal, wherein, the frequency that first WiFi frequency channel signal used is higher than the frequency that second WiFi frequency channel signal used, its characterized in that, high frequency branch knot (3) with low frequency branch knot (2) are formed respectively on two back of the body surfaces of base plate (4), perforating hole (5) have been seted up on base plate (4), high frequency branch knot (3) warp perforating hole (5) with low frequency branch knot (2) electric connection.
2. The dual-band WiFi antenna of claim 1, characterized in that the substrate (4) is further provided with a matching stub (6), the matching stub (6) is located on the surface of the side where the high frequency stub (3) is located or the surface of the side where the low frequency stub (2) is located, and the matching stub (6) is used for impedance matching design to adjust signal frequency.
3. The dual-band WiFi antenna of claim 2, characterized in that the matching stub (6) is located on the surface of the side where the high frequency stub (3) is located and the matching stub (6) is electrically connected to the high frequency stub (3).
4. Dual-band WiFi antenna according to claim 1, wherein a matching circuit reservation (7) is further disposed on the substrate (4), the matching circuit reservation (7) comprises a capacitor mounting region (71) and an inductor mounting region (72), the capacitor mounting region (71) is disposed with a conductive solder joint (73) electrically connected to the circuit board ground layer (41), and the inductor mounting region (72) is used for mounting an inductor element.
5. The dual-band WiFi antenna of claim 1, wherein the high frequency branch (3) comprises a first structure segment (31) and a second structure segment (32), the first structure segment (31) is electrically connected to the circuit board ground (41) on the substrate (4), the second structure segment (32) is orthogonally connected to the first structure segment (31), and the second structure segment (32) is disposed against the edge of the substrate (4).
6. Dual band WiFi antenna according to claim 5, characterized in that the first structure section (31) has a length of 5mm to 10mm and the second structure section (32) has a length of 15mm to 20 mm.
7. Dual band WiFi antenna according to claim 5, characterized in that the low frequency branch (2) is located on the front and back side of the second structure section (32).
8. Dual band WiFi antenna according to claim 1, characterized in that the length of the low frequency branch (2) is between 10mm and 20 mm.
9. Dual band WiFi antenna as claimed in any one of claims 1-8, wherein the first WiFi band signal is used at a frequency of 5.1 GHz-5.9 GHz and the second WiFi band signal is used at a frequency of 2.45 GHz-2.5 GHz.
10. A wireless communication device comprising a dual band WiFi antenna as claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221762647.4U CN217468806U (en) | 2022-07-06 | 2022-07-06 | Dual-band WiFi antenna and wireless communication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221762647.4U CN217468806U (en) | 2022-07-06 | 2022-07-06 | Dual-band WiFi antenna and wireless communication device |
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| CN217468806U true CN217468806U (en) | 2022-09-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116992266A (en) * | 2023-09-27 | 2023-11-03 | 宁波均联智行科技股份有限公司 | Living body detection method applied to vehicle and electronic equipment |
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2022
- 2022-07-06 CN CN202221762647.4U patent/CN217468806U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116992266A (en) * | 2023-09-27 | 2023-11-03 | 宁波均联智行科技股份有限公司 | Living body detection method applied to vehicle and electronic equipment |
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