CN210957000U

CN210957000U - Single-feed-point double-frequency WIFI antenna and communication device

Info

Publication number: CN210957000U
Application number: CN201922070657.6U
Authority: CN
Inventors: 尚生珑; 林维翰
Original assignee: TP Link Technologies Co Ltd
Current assignee: TP Link Technologies Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-07-07
Anticipated expiration: 2029-11-26

Abstract

The utility model relates to a wireless communication device technical field provides a single point double-frenquency WIFI antenna and communication device are presented, and this single point double-frenquency WIFI antenna of presenting includes dielectric substrate, irradiator and coaxial cable. The radiator comprises a folded dipole radiation part and a dipole radiation part. The folded dipole radiating part comprises two first radiating arms, and the dipole radiating part comprises two second radiating arms. The 2.4GHz frequency band antenna is a folded dipole antenna consisting of two first radiating arms, and the 5GHz frequency band antenna is a dipole antenna consisting of two second radiating arms, so that more 2G current is arranged on the two first radiating arms, and the 2G energy of radio frequency is radiated outwards mainly through the two first radiating arms. The two second radiation arms have more 5G current, and the 5G energy of radio frequency is mainly radiated outwards through the two second radiation arms. The radiation resistance of the two first radiation arms is higher, and the radiation resistance is still in a range when the first radiation arms are closer to the metal body, so that better standing wave characteristics are realized.

Description

Single-feed-point double-frequency WIFI antenna and communication device

Technical Field

The utility model relates to a communication device technical field especially provides a single point of presenting dual-frenquency WIFI antenna and have this single point of presenting dual-frenquency WIFI antenna's communication device.

Background

With the development of mobile internet technology, WIFI (Wireless-Fidelity) is gradually becoming the mainstream data carrying way of large-capacity file transmission such as application video, and thus, the market demand for WIFI antennas is also increasing.

At present, a single-feed-point dual-frequency WIFI antenna usually adopts a dipole antenna scheme, so that the distance between the dipole antenna and a device mainboard copper sheet can meet the requirement that the voltage standing wave ratio of 2.4 GHz-2.5 GHz is less than 2 only when the distance reaches more than 10mm, wherein the larger the standing wave ratio is, the higher the reflection power is, and the lower the transmission efficiency is. Therefore, the conventional single-point dual-frequency WIFI antenna needs to be installed in a higher clearance to ensure the radiation performance, and meanwhile, the miniaturization of the communication device is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a single point of presenting dual-frenquency WIFI antenna aims at solving current single-point dual-frenquency WIFI antenna and need install the problem in order to ensure radiation performance in higher headroom.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a single feed point dual-frenquency WIFI antenna, includes the dielectric substrate, locates irradiator and coaxial cable on the dielectric substrate, the dielectric substrate include first installation face and with the second installation face that first installation face is relative, the irradiator includes folded dipole radiation portion and dipole radiation portion, folded dipole radiation portion is including being mirror symmetry and locating two first radiating arms on the first installation face, dipole radiation portion is including being mirror symmetry and locating on the first installation face and respectively with each two second radiating arms that first radiating arm corresponds, wherein, the homonymy one first radiating arm and one second radiating arm connect in coaxial cable's heart yearn, the opposite side one first radiating arm and one second radiating arm connect in coaxial cable's ground wire.

Specifically, each of the first radiating arms includes a first connecting section parallel to a long side direction of the dielectric substrate, a second connecting section perpendicularly connected to the first connecting section, a third connecting section perpendicularly connected to the second connecting section, and a fourth connecting section perpendicularly connected to the third connecting section.

Preferably, each of the fourth connecting segments has a plurality of first copper-clad holes.

Further, the folded dipole radiating section further includes a third radiating arm disposed on the second mounting surface.

Specifically, the third radiating arm includes a fifth connecting segment parallel to the long side direction of the dielectric substrate, two sixth connecting segments respectively and vertically connected to opposite ends of the fifth connecting segment, two seventh connecting segments respectively and vertically connected to the corresponding sixth connecting segments, and two eighth connecting segments respectively and vertically connected to the corresponding seventh connecting segments.

Preferably, each of the eighth connecting segments has a plurality of second copper-clad holes.

Preferably, the second radiating arm is a rectangular second radiating arm.

Furthermore, the dipole radiation part further comprises two coupling patches which are mirror-symmetrical and arranged on the second mounting surface, and each coupling patch corresponds to each second radiation arm one to one.

Preferably, each of the coupling patches is a rectangular coupling patch.

The utility model has the advantages that: the utility model discloses a single point double-frenquency WIFI antenna of presenting, its 2.4GHz frequency channel antenna be the dipole antenna that constitutes of two first radiating arms, and 5GHz frequency channel antenna is the dipole antenna that two second radiating arms are constituteed, like this, has more 2G electric currents on two first radiating arms, and the 2G energy of radio frequency mainly radiates through two first radiating arms outwards. The two second radiation arms have more 5G current, and the 5G energy of radio frequency is mainly radiated outwards through the two second radiation arms. The radiation resistance of the two first radiation arms of the folded dipole antenna is higher, and the radiation resistance is still in a range when the folded dipole antenna is closer to a metal body, so that better standing wave characteristics are realized. Meanwhile, the 5G current on the two first radiation arms is small, and the influence on 5G radiation is small. Therefore, under the condition of small headroom, the problem of return loss is effectively solved, and the radiation performance of the antenna is remarkably improved.

The utility model also provides a communication device, including the aforesaid single feed point dual-frenquency WIFI antenna.

The utility model has the advantages that: the utility model discloses a communication device, on the basis that has above-mentioned single point of presenting dual-frenquency WIFI antenna, this communication device's whole volume is littleer.

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 described 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 creative efforts.

Fig. 1 is a schematic structural diagram of a single-feed-point dual-frequency WIFI antenna provided in an embodiment of the present invention;

fig. 2 is a front view of a single-feed-point dual-frequency WIFI antenna provided in an embodiment of the present invention;

fig. 3 is the embodiment of the utility model provides a back view of single feed point dual-frenquency WIFI antenna.

Wherein, in the figures, the respective reference numerals:

the dual-frequency WIFI antenna comprises a single-feed-point dual-frequency WIFI antenna 100, a dielectric substrate 10, a radiator 20, a coaxial cable 30, a first mounting surface 10a, a second mounting surface 10b, a folded dipole radiation part 21, a dipole radiation part 22, a first radiation arm 211, a second radiation arm 221, a first connecting section 21a, a second connecting section 21b, a third connecting section 21c, a fourth connecting section 21d, a first copper-clad hole 21e, a third radiation arm 212, a fifth connecting section 21f, a sixth connecting section 21g, a seventh connecting section 21h, an eighth connecting section 21i, a second copper-clad hole 21j and a coupling patch 222.

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 to fig. 3, a single-feed-point dual-frequency WIFI antenna 100 according to an embodiment of the present invention includes a dielectric substrate 10, a radiator 20 disposed on the dielectric substrate 10, and a coaxial cable 30. The dielectric substrate 10 includes a first mounting surface 10a and a second mounting surface 10b opposite to the first mounting surface 10a, and the radiator 20 includes a folded dipole radiating portion 21 and a dipole radiating portion 22, where the folded dipole radiating portion 21 is a 2.4GHz band antenna and the dipole radiating portion 22 is a 5GHz band antenna. The folded dipole radiating portion 21 includes two first radiating arms 211 that are mirror-symmetric and disposed on the first mounting surface 10a, the dipole radiating portion 22 includes two second radiating arms 221 that are mirror-symmetric and disposed on the first mounting surface 10a and respectively correspond to the first radiating arms 211, wherein a first radiating arm 211 and a second radiating arm 221 on the same side are connected to the core wire of the coaxial cable 30, and a first radiating arm 211 and a second radiating arm 221 on the other side are connected to the ground wire of the coaxial cable 30.

The embodiment of the utility model provides a single feed point dual-frenquency WIFI antenna 100, its 2.4GHz frequency channel antenna be the folded dipole antenna that two first radiating arms 211 are constituteed, and 5GHz frequency channel antenna is the dipole antenna that two second radiating arms 221 are constituteed, like this, has more 2G electric current on two first radiating arms 211, and the 2G energy of radio frequency mainly outwards radiates through two first radiating arms 211. The second radiating arms 221 have a larger current of 5G, and the rf energy of 5G is mainly radiated through the second radiating arms 221. The radiation resistance of the two first radiation arms 211 of the folded dipole antenna is higher, and the radiation resistance is still in a range when the folded dipole antenna is closer to a metal body, so that better standing wave characteristics are realized. Meanwhile, the 5G current on the two first radiating arms 211 is small, and thus the influence on the 5G radiation is small. Therefore, under the condition of small headroom, the problem of return loss is effectively solved, and the radiation performance of the antenna is remarkably improved.

In one embodiment, the length and width of the dielectric substrate 10 are 43mm × 7.6mm, and the single-feed-point dual-frequency WIFI antenna 100 of the present application can satisfy the voltage standing wave ratio of 2.4 to 2.5GHz and 5.15 to 5.85GHz less than 2, that is, the return loss is greater than 9.6 dB.

Specifically, referring to fig. 1 and fig. 2, in the present embodiment, each of the first radiation arms 211 includes a first connection segment 21a parallel to the long side direction of the dielectric substrate 10, a second connection segment 21b perpendicularly connected to the first connection segment 21a, a third connection segment 21c perpendicularly connected to the second connection segment 21b, and a fourth connection segment perpendicularly connected to the third connection segment 21 c. Here, the first radiating arm 211 is connected in a multi-segment manner, and of course, the number of the connecting segments can be adjusted according to actual situations.

Preferably, referring to fig. 2, each of the fourth connecting segments 21d is formed with a plurality of first copper-clad holes 21 e.

Further, referring to fig. 3, in the present embodiment, the folded dipole radiating portion 21 further includes a third radiating arm 212 disposed on the second mounting surface 10 b.

Preferably, referring to fig. 3, the third radiating arm 212 includes a fifth connecting segment 21f parallel to the long side direction of the dielectric substrate 10, two sixth connecting segments 21g respectively vertically connected to two opposite ends of the fifth connecting segment 21f, two seventh connecting segments 21h respectively vertically connected to the corresponding sixth connecting segments 21g, and two eighth connecting segments 21i respectively vertically connected to the corresponding seventh connecting segments 21 h. Here, the third radiating arm 212 is connected in a multi-segment manner, and of course, the number of the connecting segments can be adjusted according to actual situations.

Preferably, referring to fig. 2, each eighth connecting segment 21i is provided with a plurality of second copper-clad holes 21 j.

Preferably, the second radiating arm 221 is a rectangular second radiating arm. Of course, a trapezoidal second radiating arm, etc. is also possible.

Further, referring to fig. 3, the dipole radiating portion 22 further includes two coupling patches 222 that are mirror-symmetric and disposed on the second mounting surface 10b, and each coupling patch 222 corresponds to each second radiating arm 221 one by one. Here, the coupling patch 222 is used to adjust the standing wave of the 5G band, and has a significant adjusting effect on the 5G bandwidth.

Preferably, each coupling patch 222 is a rectangular coupling patch. Here, the outline of the coupling patch 222 is the same as or similar to the outline of the second radiating arm 221, but may be a trapezoidal coupling patch or the like.

The embodiment of the utility model provides a communication device is still provided, including foretell single feed point dual-frenquency WIFI antenna 100. On the basis of having above-mentioned single feed point dual-frenquency WIFI antenna 100, this communication device's whole volume is littleer.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a single feed point dual-frenquency WIFI antenna which characterized in that: the antenna comprises a dielectric substrate, a radiating body and a coaxial cable, wherein the radiating body and the coaxial cable are arranged on the dielectric substrate, the dielectric substrate comprises a first mounting surface and a second mounting surface opposite to the first mounting surface, the radiating body comprises a folded dipole radiating part and a dipole radiating part, the folded dipole radiating part comprises two first radiating arms which are in mirror symmetry and arranged on the first mounting surface, the dipole radiating part comprises two second radiating arms which are in mirror symmetry and arranged on the first mounting surface and respectively correspond to the first radiating arms, the first radiating arms and the second radiating arms on the same side are connected to core wires of the coaxial cable, and the first radiating arms and the second radiating arms on the other side are connected to ground wires of the coaxial cable.

2. The single-feed dual-frequency WIFI antenna of claim 1, wherein: each first radiation arm comprises a first connecting section parallel to the long side direction of the medium substrate, a second connecting section vertically connected to the first connecting section, a third connecting section vertically connected to the second connecting section, and a fourth connecting section vertically connected to the third connecting section.

3. The single-feed dual-frequency WIFI antenna of claim 2, wherein: and a plurality of first copper-clad holes are formed in each fourth connecting section.

4. The single-feed dual-frequency WIFI antenna of claim 1, wherein: the folded dipole radiating section further comprises a third radiating arm arranged on the second mounting surface.

5. The single-feed dual-frequency WIFI antenna of claim 4, wherein: the third radiation arm comprises a fifth connecting section parallel to the long side direction of the medium substrate, two sixth connecting sections respectively and vertically connected to two opposite ends of the fifth connecting section, two seventh connecting sections respectively and vertically connected to the corresponding sixth connecting sections, and two eighth connecting sections respectively and vertically connected to the corresponding seventh connecting sections.

6. The single-feed dual-frequency WIFI antenna of claim 5, wherein: and a plurality of second copper-coated holes are formed in each eighth connecting section.

7. The single-feed dual-frequency WIFI antenna of claim 1, wherein: the second radiating arm is a rectangular second radiating arm.

8. The single-feed-point dual-frequency WIFI antenna according to any one of claims 1 to 7, wherein: the dipole radiation part further comprises two coupling patches which are mirror-symmetrical and arranged on the second mounting surface, and each coupling patch corresponds to each second radiation arm one to one.

9. The single-feed dual-frequency WIFI antenna of claim 8, wherein: each coupling patch is a rectangular coupling patch.

10. A communication device, characterized by: including a single-feed dual-band WIFI antenna as claimed in any one of claims 1 to 9.