Shell-mounted antenna and wireless communication device

Abstract

The utility model discloses a shell-mounted antenna and a wireless communication device, the shell-mounted antenna comprises a dielectric plate, a feed assembly and a radiator, the feed assembly is arranged on one side of the dielectric plate, the feed assembly comprises a first probe and a second probe, a feed point is arranged between the first probe and the second probe, and the first probe and the second probe are oppositely arranged; the radiator is arranged on the other surface of the dielectric plate and comprises a first metal sheet and a second metal sheet, the first metal sheet and the second metal sheet are arranged on the dielectric plate at an interval, the first metal sheet is located above the first probe, the second metal sheet is located above the second probe, and the first probe is in coupled feed connection with the first metal sheet; the first probe is in coupled feed connection with the first metal sheet, so that the first probe conducts the electric energy to the first metal sheet, and the second probe is in coupled feed connection with the second metal sheet, so that the second probe conducts the electric energy to the second metal sheet. The bandwidth of the shell-mounted antenna is improved through the coupled feed assembly with the double-line design.

Description

Technical Field

[0001] The utility model relates to the technical field of communication antennas, in particular to a shell-mounted antenna and wireless communication equipment. Background Art

[0002] The conventional method for existing shell antennas used in routers is to use omnidirectional antennas placed on both sides of the PCB board. For shell antennas placed in front of and behind the PCB board, they are limited by the high profile height, and the antenna pattern is oriented forward. In addition, the feed structure in the existing shell antenna is directly connected to the antenna, which will produce a high impedance, thereby reducing the bandwidth of the antenna. At the same time, the electric field distribution on both sides of the router is relatively weak, resulting in poor signal reception and transmission effects. Utility Model Content

[0003] The main purpose of the utility model is to provide a shell-mounted antenna, aiming to solve the above-mentioned technical problems.

[0004] To achieve the above object, the utility model provides a shell-mounted antenna, comprising:

[0005] Dielectric plate;

[0006] A feeding assembly is arranged on one side of the dielectric plate, the feeding assembly comprises a first probe and a second probe, a feeding point is arranged between the first probe and the second probe, the feeding point is used to feed the first probe and the second probe, and the first probe and the second probe are arranged opposite to each other;

[0007] A radiator is arranged on the other side of the dielectric plate, the radiator includes a first metal sheet and a second metal sheet, the first metal sheet and the second metal sheet are arranged on the dielectric plate at an interval, the first metal sheet is located above the first probe, the second metal sheet is located above the second probe, the first probe is coupled with the first metal sheet for feeding, the first probe conducts electrical energy to the first metal sheet, and the second probe is coupled with the second metal sheet for feeding, the second probe conducts electrical energy to the second metal sheet.

[0008] In one embodiment, the first probe includes a first connecting section and two first feeding sections, the two first feeding sections are arranged at the ends of both sides of the first connecting section, the second probe includes a second connecting section and two second feeding sections, the two second feeding sections are arranged at the ends of both sides of the second connecting section, the two first feeding sections and the two second feeding sections extend in opposite directions, and the first connecting section is arranged in parallel with the second connecting section.

[0009] In one embodiment, the shell antenna further includes a parasitic metal sheet, and the parasitic metal sheet is arranged on the same side of the first metal sheet and the second metal sheet.

[0010] In one embodiment, the parasitic metal sheet, the first metal sheet, and the second metal sheet are disposed on the same plane of the dielectric plate.

[0011] In one embodiment, a suppression groove is formed at one end of the parasitic metal sheet away from the first metal sheet and the second metal sheet, and the suppression groove is formed along the arrangement direction of the first metal sheet and the second metal sheet.

[0012] In one embodiment, a connecting metal strip is disposed at one end of the parasitic metal sheet away from the first metal sheet and the second metal sheet.

[0013] In one embodiment, a parasitic metal strip is disposed at one end of the connecting metal strip away from the first metal sheet and the second metal sheet.

[0014] In one embodiment, the number of the parasitic metal sheets is two, and the two parasitic metal sheets are respectively disposed on two side edges of the first metal sheet and the second metal sheet.

[0015] In one embodiment, the number of the parasitic metal strips is two, and the two parasitic metal strips are spaced apart from each other corresponding to the connecting metal strips of the two parasitic metal sheets.

[0016] The utility model also provides a wireless communication device, comprising the shell-mounted antenna as described in any one of the above embodiments.

[0017] The technical solution of the utility model adopts a double-wire design for the feeding component and a double-wire design for the radiator, and the feeding component and the radiator are connected by coupling feeding, which can effectively reduce the large impedance generated by the direct connection between the feeding component and the radiator, thereby improving the impedance bandwidth of the shell antenna. Moreover, since both the feeding component and the radiator adopt a double-wire design, the wide beam characteristic of the shell antenna can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the shell antenna of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the mid-feed assembly;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the radiator, parasitic metal sheet and parasitic metal strip;

[0022] Figure 4 It is a schematic diagram of the impedance bandwidth of the shell antenna of the utility model when the cross-section height is only 5mm;

[0023] Figure 5 It is a schematic diagram of the low-profile wide-beam directional direction of the shell antenna of the utility model.

[0024] Description of Figure Numbers:

[0025] Label name Label name 100 Shell antenna 110 Feeding components 112 The first probe 114 The second probe 116 Feeding point 120 Dielectric board 130 Radiator 132 First metal sheet 134 Second metal sheet 140 Parasitic metal sheet 142 Suppression tank 144 Connecting metal strips 150 Parasitic metal strips

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] The utility model provides a shell antenna 100, comprising a dielectric plate 120, a feeding assembly 110 and a radiator 130, wherein the feeding assembly 110 is arranged on one side of the dielectric plate 120, the feeding assembly 110 comprises a first probe 112 and a second probe 114, a feeding point 116 is arranged between the first probe 112 and the second probe 114, the feeding point 116 is used to feed the first probe 112 and the second probe 114, and the first probe 112 and the second probe 114 are arranged opposite to each other; the radiator 130 is arranged on the other side of the dielectric plate 120, and the radiator 130 includes a first metal sheet 132 and a second metal sheet 134, the first metal sheet 132 and the second metal sheet 134 are spaced apart on the dielectric plate 120, the first metal sheet 132 is located above the first probe 112, the second metal sheet 134 is located above the second probe 114, the first probe 112 is coupled and fed with the first metal sheet 132 so that the first probe 112 transfers energy to the first metal sheet 132, and the second probe 114 is coupled and fed with the second metal sheet 134 so that the second probe 114 transfers energy to the second metal sheet 134.

[0031] In this embodiment, if Figures 1 to 3As shown, the shell antenna 100 is composed of a dielectric plate 120, a feeding component 110 arranged on one side of the dielectric plate 120, and a radiator 130 arranged on the other side of the dielectric plate 120, wherein the feeding component 110 includes a first probe 112, a second probe 114 and a feeding point 116, the feeding point 116 is arranged in the middle of the first probe 112 and the second probe 114, and the first probe 112 and the second probe 114 are conductively connected, and the feeding point 116 is used to connect to an external RF module, the radiator 130 is composed of a first metal sheet 132 and a second metal sheet 134, the first metal sheet 132 and the second metal sheet 134 are arranged on the dielectric plate 120 at intervals, and are located just above the first probe 112 and the second probe 114, and correspond to the first probe 112 and the second probe 114 respectively, the first metal sheet 132 is above the first probe 112, the second metal sheet 134 is above the second probe 114, and the feeding point 116 is used to connect to an external RF module. When feeding the first probe 112 and the second probe 114, the first probe 112 and the second probe 114 will conduct the electric energy transmitted from the feeding point 116 to the first metal sheet 132 and the second metal sheet 134 through coupling feeding. When the first metal sheet 132 and the second metal sheet 134 receive the energy of the two-line feeding network of the first probe 112 and the second probe 114, the first metal sheet 132 and the second metal sheet 134 in the radiator 130 are equivalent to a binary array, which will improve the gain of the antenna. Through such a setting, when the feeding component 110 is connected to the radiator 130, the Q value of the antenna can be effectively reduced, and the input impedance can be close to 50 ohms, thereby achieving the purpose of expanding the working bandwidth of the antenna. Since the radiator 130 is composed of the first metal sheet 132 and the second metal sheet 134, the first metal sheet 132 and the second metal sheet 134 can constitute a binary array antenna, thereby achieving the purpose of further improving the gain of the antenna.

[0032] In one embodiment, if Figures 1 to 3As shown, the first probe 112 includes a first connecting section and two first feeding sections, the two first feeding sections are arranged at the ends of both sides of the first connecting section, the second probe 114 includes a second connecting section and two second feeding sections, the two second feeding sections are arranged at the ends of both sides of the second connecting section, the two first feeding sections and the two second feeding sections are extended in opposite directions, and the first connecting section and the second connecting section are arranged in parallel. In this embodiment, the first probe 112 is composed of a first connecting section and two first feeding sections, the two first feeding sections are arranged at the ends of both sides of the first connecting section, and the second probe 114 is composed of a second connecting section and two second feeding sections, wherein the first connecting section and the second connecting section are arranged oppositely, and the two first feeding sections and the two second feeding sections are extended in opposite directions, the first connecting section is used to feed the first feeding sections arranged at the ends of both sides, and the second connecting section is used to feed the second feeding sections arranged at the ends of both sides, when the first probe 112 and the second probe 114 are arranged on one side of the dielectric plate 120 and put into use, the first A probe 112 receives the feed transmitted by the feeding point 116, and then transmits it to the first feeding section at the ends of both sides through the first connecting section, and then feeds the first metal sheet 132 in the radiator 130 arranged on the other side of the dielectric plate 116 through the first feeding section, while the second probe 114 receives the feed from the feeding point 116 through the second connecting section, and then feeds the second metal sheet 134 through the second feeding section arranged at the ends of both sides. In this embodiment, the first feeding section and the second feeding section are arranged in a T shape. In other embodiments, the first feeding section and the second feeding section can also be arranged in other shapes.

[0033] In one embodiment, if Figure 4 As shown, in this embodiment, the impedance bandwidth diagram of the shell antenna 100 is set when the cross-sectional height is only 5 mm. It can be seen from the figure that the bandwidth of the antenna is effectively expanded.

[0034] In one embodiment, if Figure 1 and Figure 3 As shown, the shell antenna 100 further includes a parasitic metal sheet 140, which is disposed on the same side of the first metal sheet 132 and the second metal sheet 134. The shell antenna 100 further includes a parasitic metal sheet 140 disposed on the same side of the first metal sheet 132 and the second metal sheet 134, and the parasitic metal sheet 140 is coupled and fed with the first metal sheet 132 and the second metal sheet 134. When the first metal sheet 132 and the second metal sheet 134 are subjected to energy transfer from the feeding component 110, the parasitic metal sheet 140 will generate a current in the opposite direction due to the excitation of the first metal sheet 132 and the second metal sheet 134. At this time, the radiator 130 and the parasitic metal sheet 140 are superimposed on each other to form a wide beam characteristic.

[0035] In one embodiment, if Figure 1As shown, the parasitic metal sheet 140 and the first metal sheet 132 and the second metal sheet 134 are arranged on the same plane of the dielectric plate 120. In this embodiment, the parasitic metal sheet 140 is arranged on the same plane as the dielectric plate 120 where the first metal sheet 132 and the second metal sheet 134 are arranged. Of course, the parasitic metal sheet 140 can also be arranged on a plane different from the first metal sheet 132 and the second metal sheet 134, but it needs to maintain a coupled feeding connection with the first metal sheet 132 and the second metal sheet 134, which can also achieve the same effect as the above embodiment.

[0036] In one embodiment, if Figure 3 As shown, a suppression groove 142 is provided at one end of the parasitic metal sheet 140 away from the first metal sheet 132 and the second metal sheet 134, and the suppression groove 142 is provided along the arrangement direction of the first metal sheet 132 and the second metal sheet 134. In this embodiment, the suppression groove 142 is provided at one end of the parasitic metal sheet 140 away from the first metal sheet 132 and the second metal sheet 134, and is provided along the arrangement direction of the first metal sheet 132 and the second metal sheet 134. The provision of the suppression groove 142 can effectively suppress the transverse current induced on the parasitic metal sheet 140, thereby further improving the characteristics of the wide beam.

[0037] In one embodiment, if Figure 3 As shown, a connecting metal strip 144 is provided at one end of the parasitic metal sheet 140 away from the first metal sheet 132 and the second metal sheet 134, and a parasitic metal strip 150 is provided at one end of the connecting metal strip 144 away from the first metal sheet 132 and the second metal sheet 134. A notch is provided on one side of the parasitic metal sheet 140 facing the first metal sheet 132 and the second metal sheet 134, and the notch is provided with reference to the spacing between the first metal sheet 132 and the second metal sheet 134, and a connecting metal strip 144 is provided at one end of the parasitic metal sheet 140 away from the first metal sheet 132 and the second metal sheet 134, and a parasitic metal strip 150 is provided at one end of the connecting metal strip 144 away from the first metal sheet 132 and the second metal sheet 134, and the parasitic metal strip 150 is provided corresponding to the connecting metal strip 144, and the connecting metal strip 144 and the parasitic metal strip 150 can play a role in guiding energy, and propagate the energy to one side, so as to further broaden the wavelength of the antenna.

[0038] In one embodiment, if Figure 1The number of the parasitic metal sheets 140 is multiple, and the multiple parasitic metal sheets 140 are arranged around the outer peripheral edges of the first metal sheet 132 and the second metal sheet 134. In order to enable the shell antenna to expand the wavelength in all directions at the same time, in this embodiment, multiple parasitic metal sheets 140 are provided, and the multiple parasitic metal sheets 140 are arranged around the outer peripheral edges of the first metal sheet 132 and the second metal sheet 134, so that the first metal sheet 132 and the second metal sheet 134 can achieve the purpose of exciting the surrounding parasitic metal sheets 140 when they are used normally, thereby achieving the purpose of further improving the wavelength of the shell antenna 100.

[0039] In one embodiment, if Figure 3 As shown, there are two parasitic metal sheets 140, and the two parasitic metal sheets 140 are respectively arranged at the edges of both sides of the first metal sheet 132 and the second metal sheet 134. In this embodiment, there are two parasitic metal sheets 140, and the two parasitic metal sheets 140 are respectively arranged at the edges of both sides of the first metal sheet 132 and the second metal sheet 134. Such a setting can effectively expand the beam width of the shell antenna 100 in both directions.

[0040] In one embodiment, if Figure 3 As shown, there are two parasitic metal strips 150, and the two parasitic metal strips 150 are spaced apart corresponding to the connecting metal strips 144 on the two parasitic metal sheets 140. In order to further expand the wavelength of the shell antenna 100, in this embodiment, two parasitic metal strips 150 are respectively arranged on opposite sides of the two parasitic metal sheets 140, and the two parasitic metal strips 150 are spaced apart corresponding to the connecting metal strips 144 on the two parasitic metal sheets 140. Such an arrangement can effectively improve the purpose of widening the wavelength of the shell antenna 100 to both sides.

[0041] In one embodiment, if Figure 5 As shown, in this embodiment, the antenna beamwidth is expanded through the tight coupling effect of the radiator 130 and the parasitic metal sheet 140. Through the guiding effect of the connecting metal strip 144 on the parasitic metal sheet 140 and the parasitic metal strip 150, the antenna radiation pattern presents a flat-top shape, thereby expanding the beamwidth and avoiding the problem of radiation blind spots near low elevation angles of directional antennas.

[0042] In one embodiment, if Figure 2 As shown, the first probe 112 and the second probe 114 are symmetrically arranged with the feeding point 116 as the center. In order to enable the first probe 112 and the second probe 114 to simultaneously feed the first metal sheet 132 and the second metal sheet 134, in this embodiment, the first probe 112 and the second probe 114 are symmetrically arranged with the feeding point 116 as the center. Of course, the first probe 112 and the second probe 114 can adopt other forms of structural arrangements, not limited to the structural style in this embodiment.

[0043] The utility model also proposes a wireless communication device, which includes a shell antenna 100 as in any one of the above embodiments. The specific structure of the shell antenna 100 refers to the above embodiments. Since the wireless communication device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0044] The above description is only an optional embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A shell-mounted antenna, characterized in that: include: Dielectric plate; A feeding assembly is arranged on one side of the dielectric plate, the feeding assembly comprises a first probe and a second probe, a feeding point is arranged between the first probe and the second probe, the feeding point is used to feed the first probe and the second probe, and the first probe and the second probe are arranged opposite to each other; A radiator is arranged on the other side of the dielectric plate, the radiator includes a first metal sheet and a second metal sheet, the first metal sheet and the second metal sheet are arranged on the dielectric plate at an interval, the first metal sheet is located above the first probe, the second metal sheet is located above the second probe, the first probe is coupled with the first metal sheet for feeding, the first probe conducts electrical energy to the first metal sheet, and the second probe is coupled with the second metal sheet for feeding, the second probe conducts electrical energy to the second metal sheet.

2. The shell antenna according to claim 1, characterized in that: The first probe includes a first connecting section and two first feeding sections, the two first feeding sections are arranged at the two side ends of the first connecting section, the second probe includes a second connecting section and two second feeding sections, the two second feeding sections are arranged at the two side ends of the second connecting section, the two first feeding sections and the two second feeding sections extend in opposite directions, and the first connecting section is arranged in parallel with the second connecting section.

3. The shell antenna according to claim 1, characterized in that: The shell antenna further includes a parasitic metal sheet, and the parasitic metal sheet is arranged on the same side of the first metal sheet and the second metal sheet.

4. The shell-mounted antenna according to claim 3, characterized in that: The parasitic metal sheet, the first metal sheet and the second metal sheet are arranged on the same plane of the dielectric plate.

5. The shell-mounted antenna according to claim 4, characterized in that: An inhibition groove is formed at one end of the parasitic metal sheet away from the first metal sheet and the second metal sheet, and the inhibition groove is formed along the arrangement direction of the first metal sheet and the second metal sheet.

6. The shell-mounted antenna according to claim 5, characterized in that: A connecting metal strip is disposed at one end of the parasitic metal sheet away from the first metal sheet and the second metal sheet.

7. The shell-mounted antenna according to claim 6, characterized in that: A parasitic metal strip is disposed at one end of the connecting metal strip away from the first metal sheet and the second metal sheet.

8. The shell-mounted antenna according to claim 7, characterized in that: The number of the parasitic metal sheets is two, and the two parasitic metal sheets are respectively arranged on two side edges of the first metal sheet and the second metal sheet.

9. The shell-mounted antenna according to claim 8, characterized in that: The number of the parasitic metal strips is two, and the two parasitic metal strips are spaced apart from each other corresponding to the connecting metal strips on the two parasitic metal sheets.

10. A wireless communication device, characterized in that: The invention comprises the shell-mounted antenna as claimed in any one of claims 1 to 9.

Images