CN219329387U

CN219329387U - Dual-frenquency wiFi antenna and router

Info

Publication number: CN219329387U
Application number: CN202222759545.3U
Authority: CN
Inventors: 梁胜; 张辉; 廖洋洋
Original assignee: Dongguan Nandouxing Technology Co ltd
Current assignee: Dongguan Nandouxing Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-07-11
Anticipated expiration: 2032-10-19

Abstract

The utility model relates to the technical field of communication and provides a dual-frequency WiFi antenna and a router, wherein the dual-frequency WiFi antenna comprises a first radiator, a second radiator, a third radiator, a fourth radiator, a fifth radiator and a sixth radiator which are sequentially arranged on a dielectric substrate, the first radiator, the second radiator, the fifth radiator and the sixth radiator are respectively provided with a first branch and a second branch which can radiate signals with different frequency bands, the first radiator is connected with an inner conductor of a coaxial feeder line through a microstrip line and/or an inner conductor of a coaxial jumper, the second radiator is connected with the third radiator through an outer conductor of the microstrip line or the coaxial jumper, the fourth radiator is connected with the fifth radiator through an outer conductor of the microstrip line or the coaxial jumper, and the sixth radiator is connected with an outer conductor of the coaxial feeder line. The dual-frequency WiFi antenna is applied to a router, so that high-gain radiation signals and better omnidirectional performance can be realized at lower cost.

Description

Dual-frenquency wiFi antenna and router

Technical Field

The utility model relates to the technical field of communication, in particular to a dual-frequency WiFi antenna and a router.

Background

With the update of WiFi6 and WiFi7 technologies, the demand of a single router device for the number of 2G and 5G WiFi antennas is increasing, so that in order to better layout and reduce the number of antennas, further reduce the cost, the antenna scheme of dual frequency single feed is more and more selected by manufacturers. The existing dual-frequency single-feed antenna on the market has the problems of lower gain and poorer horizontal omnidirectionality, and the antenna with better partial performance can select a high-frequency board or a double-sided PCB with higher cost for structural design. Therefore, a dual-frequency WiFi antenna is needed, which can realize high gain and good omnidirectionality, and can control the cost at a lower level.

Disclosure of Invention

The utility model is made to solve the technical problems, and aims to provide a dual-frequency WiFi antenna and a router, which realize performance indexes of good omnidirectionality and high gain with lower cost through a single-sided PCB structure.

In order to achieve the above object, in one aspect, the present utility model provides a dual-frequency WiFi antenna, including a first radiator, a second radiator, a third radiator, a fourth radiator, a fifth radiator and a sixth radiator sequentially disposed on a dielectric substrate, where the first radiator and the second radiator, the third radiator and the fourth radiator, and the fifth radiator and the sixth radiator form a dipole antenna structure symmetrically, and the first radiator, the second radiator, the fifth radiator and the sixth radiator are each provided with a first branch and a second branch that can radiate signals in different frequency bands, the first radiator is connected with an inner conductor of a coaxial feeder feeding signals to the antenna via a microstrip line and/or a coaxial jumper disposed on the dielectric substrate, the second radiator is connected with the third radiator via an outer conductor of the microstrip line or the coaxial jumper disposed on the dielectric substrate, and the fourth radiator is connected with the fifth radiator via an outer conductor of the microstrip line or the coaxial jumper disposed on the dielectric substrate, and the fourth radiator is connected with the outer conductor of the microstrip line.

Preferably, the first radiator is connected with the inner conductor of the coaxial feeder through the inner conductor of the coaxial jumper and a first microstrip line which are arranged on the dielectric substrate in sequence, and the first microstrip line is arranged between the fourth radiator and the fifth radiator; the second radiator is connected with the third radiator through the outer conductor of the coaxial jumper; the fourth radiator is connected with the fifth radiator through a second microstrip line arranged on the dielectric substrate and forms an integrated structure, and the second microstrip line is coupled with the first microstrip line.

Preferably, the first radiator is connected with the inner conductor of the coaxial feeder through a third microstrip line, the inner conductor of the coaxial jumper and a fourth microstrip line which are arranged on the dielectric substrate in sequence; the second radiator is connected with the third radiator through a fifth microstrip line arranged on the dielectric substrate and forms an integrated structure, and the fifth microstrip line is coupled with the third microstrip line; and the fourth radiator is connected with the fifth radiator through the outer conductor of the coaxial jumper.

Preferably, the first radiator is connected with the inner conductor of the coaxial feeder via a sixth microstrip line provided on the dielectric substrate; the second radiator is connected with the third radiator through a fifth microstrip line arranged on the dielectric substrate and forms an integrated structure; the fourth radiator is connected with the fifth radiator through a seventh microstrip line arranged on the dielectric substrate and forms an integrated structure; wherein the fifth microstrip line and the seventh microstrip line are respectively coupled with the sixth microstrip line.

Preferably, the length of the coaxial jumper is one wavelength of a dipole antenna structure formed by the third radiator and the fourth radiator.

Preferably, a groove recessed toward the middle is provided at a position of the microstrip line facing the sixth radiator.

Preferably, the first stub is longer than the second stub; the first branch is used for radiating 2G signals, and the second branch is used for radiating 5G signals.

Preferably, the third radiator and the fourth radiator are provided with tooth-shaped branches for radiating the 5G signal.

To achieve the above object, in another aspect, the present utility model provides a router including the dual-frequency WiFi antenna as described above.

According to the description and practice, six radiating oscillators are sequentially arranged on one side of the dielectric substrate to form three dipole antenna structures, wherein the four radiating oscillators are provided with a first branch and a second branch which can radiate signals in different frequency bands, and finally, an array antenna for radiating signals in the first frequency band of three units and an array antenna for radiating signals in the second frequency band of two units are formed through series feeding. The array antenna with vertical polarization can generate high-gain radiation signals and has better horizontal omni-directional performance, and meanwhile, the whole antenna structure is a single-sided PCB (printed circuit board) and the manufacturing cost is lower. The method is applied to the router, and can realize high-gain radiation signals and better omnidirectional performance with lower cost.

Drawings

Fig. 1 is a schematic structural diagram of a dual-frequency WiFi antenna according to a first embodiment of the utility model.

Fig. 2 is a schematic structural diagram of a dual-frequency WiFi antenna according to a second embodiment of the utility model.

Fig. 3 is a schematic structural diagram of a dual-frequency WiFi antenna according to a third embodiment of the utility model.

The reference numerals in the figures are:

1. a dielectric substrate; 2. a coaxial feed line; 3. a coaxial jumper; 41. a first radiator; 42. a second radiator; 43. a third radiator; 44. a fourth radiator; 45. a fifth radiator; 46. a sixth radiator; 51. a first branch; 52. a second branch; 61. a first microstrip line; 62. a second microstrip line; 63. a third microstrip line; 64. a fourth microstrip line; 65. a fifth microstrip line; 66. a sixth microstrip line; 67. a seventh microstrip line; 7. a groove.

Detailed Description

Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. In the present disclosure, the terms "comprising," "including," "having," "disposed in" and "having" are intended to be open-ended and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and the like, are used merely as labels, and do not limit the number or order of their objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

In this embodiment, a dual-frequency WiFi antenna is disclosed, and fig. 1 shows a front structure of the dual-frequency WiFi antenna, in which a structure of each radiator of the antenna is mainly included. Referring to fig. 1, the dual-band WiFi antenna includes a first radiator 41, a second radiator 42, a third radiator 43, a fourth radiator 44, a fifth radiator 45 and a sixth radiator 46 sequentially disposed on a dielectric substrate 1. Wherein, the first radiator 41 and the second radiator 42 symmetrically form a dipole antenna structure; the third radiator 43 and the fourth radiator 44 symmetrically form a dipole antenna structure; the fifth radiator 45 and the sixth radiator 46 form a dipole antenna structure symmetrically. An array antenna of three elements is formed in total.

First and

second branches

51 and 52 for radiating signals of different frequency bands are provided on each of the first, second, fifth and

sixth radiators

41, 42, 45 and 46, and in this embodiment, the first branch 51 is longer than the second branch 52, wherein the first branch 51 is used for radiating 2G signals and the second branch 52 is used for radiating 5G signals. The third radiator 43 and the fourth radiator 44 each have a tooth-like branch for radiating a 5G signal.

The dual-frequency WiFi antenna feeds in signals through the coaxial feeder 2, and then realizes series feed connection of all radiators through the microstrip line and/or the coaxial jumper 3 arranged on the dielectric substrate 1, so that all the radiators can work simultaneously to generate higher gain and better horizontal omnidirectional performance.

Specifically, in this embodiment, a coaxial jumper 3 is provided between the second radiator 42 and the third radiator 43, and a first microstrip line 61 is provided between the fourth radiator 44 and the sixth radiator 46 for transmitting signals. Wherein the first radiator 41 is connected with the inner conductor of the coaxial feeder 2 sequentially via the inner conductor of the coaxial jumper 3 and the first microstrip line 61 which are arranged on the dielectric substrate 1; the second radiator 42 is connected to the third radiator 43 via the outer conductor of the coaxial jumper 3. In other words, the two ends of the inner conductor of the coaxial jumper 3 are connected to the first radiator 41 and the first microstrip line 61, respectively, and the two ends of the outer conductor of the coaxial jumper 3 are connected to the second radiator 42 and the third radiator 43, respectively.

The fourth radiator 44 is connected to the fifth radiator 45 via a second microstrip line 62 provided on the dielectric substrate 1 and forms an integral structure. As shown in fig. 1, the fourth radiator 44 and the fifth radiator 45 are divided into a left-right two-part structure from the middle by a first microstrip line 61, and the left-right parts of the two are connected together by a second microstrip line 62, respectively, to form an integral structure. The second microstrip line 62 is provided on both left and right sides of the first microstrip line 61, and feeding to the fourth radiator 44 and the fifth radiator 45 is realized by coupling.

The middle portion of the sixth radiator 46 is recessed downward for accommodating the lower end portion of the first microstrip line 61, and the lower end of the middle portion of the sixth radiator 46 is connected to the outer conductor of the coaxial feed line 2. As shown in fig. 1, the lower end of the first microstrip line 61 is also coupled with the sixth radiator 46, and a concave groove 7 is provided on the first microstrip line 61 opposite to the sixth radiator 46, and the size of the concave groove 7 is controlled to adjust the impedance of the dual-frequency WiFi antenna, so as to realize impedance matching, and ensure that the antenna has better performance.

The first radiator 41, the second radiator 42, the third radiator 43, the fourth radiator 44, the fifth radiator 45, and the sixth radiator 46 are metal lines, and may be metal sheets provided on the dielectric substrate 1 or metal lines printed on the dielectric substrate 1 in the same manner as the microstrip lines. In fig. 1, the shaded parts represent bonding pads arranged on the radiator or the microstrip line, and the coaxial jumper 3 and the inner and outer conductors of the coaxial feeder 2 are connected with the radiator or the microstrip line in a welding mode.

In this embodiment, the length of the coaxial patch cord 3 is one wavelength of the dipole antenna structure formed by the third radiator 43 and the fourth radiator 44. The second microstrip line 62 has a length equal to one wavelength of the dipole antenna structure formed by the third radiator 43 and the fourth radiator 44. The structure can enable the three dipole antenna structures to achieve higher gain.

The second branches 52, the third radiator 43 and the fourth radiator 44 in the dual-frequency WiFi antenna are used as high-frequency vibrators, and three-unit vertical polarized array antennas are formed by series feeding, so that high-gain signals can be generated in use, and meanwhile, the dual-frequency WiFi antenna has better horizontal omni-directional performance. The first branches 51 in the dual-frequency WiFi antenna serve as low-frequency vibrators, and the dual-unit vertically polarized array antenna is formed by series feeding, so that high-gain signals can be generated during use, and meanwhile, the dual-frequency WiFi antenna has better horizontal omni-directional performance. And each radiator in the dual-frequency WiFi antenna is arranged on the same surface of the medium substrate 1, and the radiator is used as a single-sided PCB, so that the manufacturing cost is low.

Example two

In this embodiment, a dual-frequency WiFi antenna is disclosed, and fig. 2 shows a front structure of the dual-frequency WiFi antenna, in which a structure of each radiator of the antenna is mainly included. Referring to fig. 2, the dual-band WiFi antenna includes a first radiator 41, a second radiator 42, a third radiator 43, a fourth radiator 44, a fifth radiator 45 and a sixth radiator 46 sequentially disposed on a dielectric substrate 1. Wherein, the first radiator 41 and the second radiator 42 symmetrically form a dipole antenna structure; the third radiator 43 and the fourth radiator 44 symmetrically form a dipole antenna structure; the fifth radiator 45 and the sixth radiator 46 form a dipole antenna structure symmetrically. An array antenna of three elements is formed in total.

First and

second branches

sixth radiators

The dual-frequency WiFi antenna feeds signals through the coaxial feeder 2, and then the connection of each radiator is realized through the microstrip line and/or the coaxial jumper 3 arranged on the dielectric substrate 1, so that each radiator can work simultaneously to generate higher gain and better horizontal omnidirectional performance.

Specifically, in this embodiment, the coaxial jumper 3 is provided between the fourth radiator 44 and the fifth radiator 45, the third microstrip line 63 is provided between the first radiator 41 and the fourth radiator 44, and the fourth microstrip line 64 is provided in the middle of the sixth radiator 46 for transmitting signals. The third microstrip line 63 divides the second radiator 42 and the third radiator 43 into a left portion and a right portion from the middle, and the left portion and the right portion of the second radiator 42 and the third radiator 43 are connected together by the fifth microstrip line 65 to form an integral structure. Fifth microstrip lines 65 are provided on both left and right sides of the third microstrip line 63, and supply of power to the second radiator 42 and the third radiator 43 is realized by coupling. The third microstrip line 63 has an upper end connected to the first radiator 41 and a lower end connected to the inner conductor of the coaxial jumper 3. Two ends of the inner conductor of the coaxial jumper 3 are respectively connected with a third microstrip line 63 and a fourth microstrip line 64; the two ends of the outer conductor of the coaxial jumper 3 are respectively connected with a fourth radiator 44 and a fifth radiator 45.

The middle portion of the sixth radiator 46 is recessed downward for accommodating the fourth microstrip line 64, and the lower end of the middle portion of the sixth radiator 46 is connected to the outer conductor of the coaxial feeder 2. As shown in fig. 2, the fourth microstrip line 64 is also coupled to the sixth radiator 46, and a concave groove 7 is formed on the fourth microstrip line 64 at a position opposite to the sixth radiator 46, and the size of the concave groove 7 is controlled to adjust the impedance of the dual-frequency WiFi antenna, so as to realize impedance matching, and ensure that the antenna has better performance.

The first radiator 41, the second radiator 42, the third radiator 43, the fourth radiator 44, the fifth radiator 45, and the sixth radiator 46 are metal lines, and may be metal sheets provided on the dielectric substrate 1 or metal lines printed on the dielectric substrate 1 in the same manner as the microstrip lines. In fig. 2, the shaded parts represent bonding pads arranged on the radiator or the microstrip line, and the coaxial jumper 3 and the inner and outer conductors of the coaxial feeder 2 are connected with the radiator or the microstrip line in a welding mode.

In this embodiment, the length of the coaxial patch cord 3 is one wavelength of the dipole antenna structure formed by the third radiator 43 and the fourth radiator 44. The lengths of the third microstrip line 63 and the fifth microstrip line 65 are one wavelength of the dipole antenna structure formed by the third radiator 43 and the fourth radiator 44. The structure can enable the three dipole antenna structures to achieve higher gain.

Example III

In this embodiment, a dual-frequency WiFi antenna is disclosed, and fig. 3 shows a front structure of the dual-frequency WiFi antenna, in which a structure of each radiator of the antenna is mainly included. Referring to fig. 3, the dual-band WiFi antenna includes a first radiator 41, a second radiator 42, a third radiator 43, a fourth radiator 44, a fifth radiator 45, and a sixth radiator 46 sequentially disposed on a dielectric substrate 1. Wherein, the first radiator 41 and the second radiator 42 symmetrically form a dipole antenna structure; the third radiator 43 and the fourth radiator 44 symmetrically form a dipole antenna structure; the fifth radiator 45 and the sixth radiator 46 form a dipole antenna structure symmetrically. An array antenna of three units is formed in total.

First and

second branches

sixth radiators

The dual-frequency WiFi antenna feeds in signals through the coaxial feeder 2, and then the connection of all the radiators is realized through the microstrip line arranged on the dielectric substrate 1, so that all the radiators can work simultaneously to generate higher gain and better horizontal omnidirectional performance.

Specifically, in this embodiment, the first radiator 41 is connected to the inner conductor of the coaxial feed line 2 via the sixth microstrip line 66 provided on the dielectric substrate 1; the sixth microstrip line 66 penetrates the second radiator 42, the third radiator 43, the fourth radiator 44, and the fifth radiator 45, and its lower end is located in the middle of the sixth radiator 46 and is connected to the inner conductor of the coaxial feed line 2.

The second radiator 42 and the third radiator 43 are divided into a left part and a right part from the middle by a sixth microstrip line 66, and the left part and the right part of the second radiator 42 and the third radiator 43 are respectively connected together by a fifth microstrip line 65 to form an integrated structure. The fifth microstrip line 65 is disposed on the left and right sides of the sixth microstrip line 66, and feeding to the second radiator 42 and the third radiator 43 is achieved by coupling.

The fourth radiator 44 and the fifth radiator 45 are divided into a left-right two-part structure from the middle by the sixth microstrip line 66, and the left-right parts of the fourth radiator 44 and the fifth radiator 45 are connected together by the seventh microstrip line 67 to form an integrated structure. The seventh microstrip line 67 is disposed on the left and right sides of the sixth microstrip line 66, and feeding to the fourth radiator 44 and the fifth radiator 45 is achieved by coupling.

The middle portion of the sixth radiator 46 is recessed downward for accommodating the lower end of the sixth microstrip line 66, and the lower end of the middle portion of the sixth radiator 46 is connected to the outer conductor of the coaxial feeder 2. As shown in fig. 3, the lower end of the sixth microstrip line 66 is also coupled to the sixth radiator 46, and a concave groove 7 is provided on the sixth microstrip line 66 opposite to the sixth radiator 46, and the size of the concave groove 7 is controlled to adjust the impedance of the dual-frequency WiFi antenna, so as to realize impedance matching, and ensure that the antenna has better performance.

The first radiator 41, the second radiator 42, the third radiator 43, the fourth radiator 44, the fifth radiator 45, and the sixth radiator 46 are metal lines, and may be metal sheets provided on the dielectric substrate 1 or metal lines printed on the dielectric substrate 1 in the same manner as the microstrip lines. The hatched portion in fig. 3 shows pads provided on the radiator or microstrip line, and the inner and outer conductors of the coaxial feed line 2 are connected to the radiator or microstrip line by soldering.

In this embodiment, the lengths of the sixth microstrip line 66 and the fifth microstrip line 65 are one wavelength of the dipole antenna structure constituted by the third radiator 43 and the fourth radiator 44. The structure can enable the three dipole antenna structures to achieve higher gain.

In addition, the utility model also discloses a router, and an antenna rod sleeve capable of accommodating the dual-frequency WiFi antenna in the embodiment is arranged on a host shell of the router, and the dual-frequency WiFi antenna is arranged in the antenna rod sleeve. By arranging the dual-frequency WiFi antenna, the router can realize a larger signal radiation range with lower cost based on the high gain and the omnidirectional performance of the antenna.

It will be apparent to those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The dual-frequency WiFi antenna is characterized by comprising a first radiator, a second radiator, a third radiator, a fourth radiator, a fifth radiator and a sixth radiator which are sequentially arranged on a dielectric substrate, wherein the first radiator and the second radiator, the third radiator and the fourth radiator, and the fifth radiator and the sixth radiator are respectively symmetrical to form a dipole antenna structure,

the first radiator, the second radiator, the fifth radiator and the sixth radiator are respectively provided with a first branch and a second branch which can radiate signals with different frequency bands,

the first radiator is connected with an inner conductor of a coaxial feeder feeding signals to the antenna through an inner conductor of a microstrip line and/or a coaxial jumper arranged on the dielectric substrate,

the second radiator is connected with the third radiator through an outer conductor of a microstrip line or a coaxial jumper arranged on the dielectric substrate,

the fourth radiator is connected with the fifth radiator through an outer conductor of a microstrip line or a coaxial jumper arranged on the dielectric substrate,

the sixth radiator is connected with the outer conductor of the coaxial feeder.

2. The dual-band WiFi antenna of claim 1,

the first radiator is connected with the inner conductor of the coaxial feeder through the inner conductor of the coaxial jumper and a first microstrip line which are arranged on the dielectric substrate in sequence, and the first microstrip line is arranged between the fourth radiator and the fifth radiator;

the second radiator is connected with the third radiator through the outer conductor of the coaxial jumper;

the fourth radiator is connected with the fifth radiator through a second microstrip line arranged on the dielectric substrate and forms an integrated structure, and the second microstrip line is coupled with the first microstrip line.

3. The dual-band WiFi antenna of claim 1,

the first radiator is connected with the inner conductor of the coaxial feeder through a third microstrip line, the inner conductor of the coaxial jumper and a fourth microstrip line which are arranged on the dielectric substrate in sequence;

the second radiator is connected with the third radiator through a fifth microstrip line arranged on the dielectric substrate and forms an integrated structure, and the fifth microstrip line is coupled with the third microstrip line;

and the fourth radiator is connected with the fifth radiator through the outer conductor of the coaxial jumper.

4. The dual-band WiFi antenna of claim 1,

the first radiator is connected with the inner conductor of the coaxial feeder through a sixth microstrip line arranged on the dielectric substrate;

the second radiator is connected with the third radiator through a fifth microstrip line arranged on the dielectric substrate and forms an integrated structure;

the fourth radiator is connected with the fifth radiator through a seventh microstrip line arranged on the dielectric substrate and forms an integrated structure; wherein the method comprises the steps of

The fifth microstrip line and the seventh microstrip line are respectively coupled with the sixth microstrip line.

5. A dual-frequency WiFi antenna as set forth in any of claims 1-3,

the length of the coaxial jumper is one wavelength of a dipole antenna structure formed by the third radiator and the fourth radiator.

6. The dual-band WiFi antenna as recited in any one of claims 1-4, wherein,

and a concave groove recessed towards the middle is arranged at the position of the microstrip line opposite to the sixth radiator.

7. The dual-band WiFi antenna as recited in any one of claims 1-4, wherein,

the first stub is longer than the second stub;

the first branch is used for radiating 2G signals, and the second branch is used for radiating 5G signals.

8. The dual-band WiFi antenna as recited in any one of claims 1-4, wherein,

the third radiator and the fourth radiator are provided with dentate branches and used for radiating 5G signals.

9. A router, comprising:

a dual frequency WiFi antenna as claimed in any one of claims 1 to 8.