CN215266672U - Dielectric resonator antenna module with large-angle scanning and mobile terminal equipment - Google Patents
Dielectric resonator antenna module with large-angle scanning and mobile terminal equipment Download PDFInfo
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- CN215266672U CN215266672U CN202120575019.4U CN202120575019U CN215266672U CN 215266672 U CN215266672 U CN 215266672U CN 202120575019 U CN202120575019 U CN 202120575019U CN 215266672 U CN215266672 U CN 215266672U
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Abstract
The utility model discloses a dielectric resonator antenna module and mobile terminal equipment of wide-angle scanning, the dielectric resonator antenna module of wide-angle scanning includes that base plate and array are in a plurality of antenna element on the base plate, be equipped with decoupling structure on the antenna element. In the dielectric resonator antenna module, the decoupling structure is arranged on the antenna units, so that the coupling phenomenon between two adjacent antenna units can be effectively improved, and the performance of the dielectric resonator antenna module is improved.
Description
Technical Field
The utility model relates to an antenna technology field especially relates to a dielectric resonator antenna module and mobile terminal equipment of wide-angle scanning.
Background
According to the technical specification of 3GPP TS 38.101-25G terminal radio frequency and the report of TR38.817 terminal radio frequency, the 5G mmWave frequency band has N257(26.5-29.5GHz), N258(24.25-27.25GHz), N260(37-40GHz), N261(27.5-28.35GHz) and newly added N259(39.5-43 GHz).
For 5G millimeter wave modules, the industry often chooses to combine the rf chip and the substrate antenna into an AIP (package antenna) to reduce the rf system loss, and thus the integration level is higher and the performance is more excellent; the dielectric resonator antenna can greatly reduce the processing precision requirement of the PCB antenna under the millimeter wave frequency band, so that the design of the dielectric resonator antenna module is an excellent solution.
AIP achieves high space coverage by electronic scanning, and the electronic scanning angle of the module is determined by the antenna unit spacing according to the analysis theory of the array antenna, in the prior art, the antenna unit spacing is 0.5 wavelength, and the antenna scanning angle is about +/-50 degrees. The antenna element arrangement pitch must be reduced for large-angle scanning, however, the reduced antenna element pitch causes large coupling between the antenna elements, which seriously affects the performance of the antenna module.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a dielectric resonator antenna module with excellent performance and large-angle scanning and a mobile terminal device are provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a dielectric resonator antenna module with large-angle scanning comprises a substrate and a plurality of antenna units arrayed on the substrate, wherein decoupling structures are arranged on the antenna units.
Furthermore, the distance between two adjacent antenna units is less than or equal to half of the wavelength of the working frequency band of the dielectric resonator antenna module scanned at a large angle.
Furthermore, the distance between two adjacent antenna units is less than or equal to 2/5 of the wavelength of the operating frequency band of the dielectric resonator antenna module with large-angle scanning.
Further, the antenna unit comprises a dielectric resonator, and the decoupling structure is arranged on the top surface of the dielectric resonator.
Further, the decoupling structure is disposed along an edge of the top surface of the dielectric resonator.
Furthermore, the decoupling structure comprises a first branch and a second branch and a third branch which are respectively vertically connected with the first branch, and the second branch and the third branch are arranged oppositely.
Furthermore, decoupling structure still includes fourth minor matters and the fifth minor matters of collineation setting, fourth minor matters and fifth minor matters all are located between second minor matters and the third minor matters, the fourth minor matters is parallel and close to the setting of first minor matters, have the clearance between fourth minor matters and the fifth minor matters.
Furthermore, the top surface of the substrate is provided with a stratum, the stratum is provided with a coupling gap, and the antenna unit covers the coupling gap.
Furthermore, the antenna unit further comprises a supporting bracket, wherein the supporting bracket is connected to the substrate, and the supporting bracket is provided with a limiting hole for fixing the antenna unit.
In order to solve the technical problem, the utility model discloses still adopt following technical scheme: the mobile terminal equipment comprises the dielectric resonator antenna module with the large-angle scanning function.
The beneficial effects of the utility model reside in that: in the dielectric resonator antenna module, the decoupling structure is arranged on the antenna units, so that the coupling phenomenon between two adjacent antenna units can be effectively improved, and the performance of the dielectric resonator antenna module is improved.
Drawings
Fig. 1 is a schematic structural diagram of a wide-angle scanning dielectric resonator antenna module according to a first embodiment of the present invention;
fig. 2 is a top view of a dielectric resonator antenna module with wide-angle scanning according to a first embodiment of the present invention (after the dielectric resonator is hidden);
fig. 3 is a schematic structural diagram of a partial structure of a wide-angle scanning dielectric resonator antenna module according to a first embodiment of the present invention;
fig. 4 is a diagram of a test result of S parameters of the dielectric resonator antenna module with wide-angle scanning according to the first embodiment of the present invention;
fig. 5 is a diagram showing a test result of a scanning angle of the dielectric resonator antenna module with a large-angle scanning according to the first embodiment of the present invention;
fig. 6 is a schematic structural diagram of a wide-angle scanning dielectric resonator antenna module according to the second embodiment of the present invention;
description of reference numerals:
1. a substrate; 11. an earth formation; 111. a coupling gap; 12. a coupling piece; 13. a matching network;
2. a dielectric resonator; 21. a first side surface; 22. a fourth side;
3. a decoupling structure; 31. a first branch section; 32. a second branch knot; 33. a third branch knot; 34. a fourth branch knot; 35. a fifth branch knot;
4. a gap;
5. a chip assembly;
6. a support bracket; 61. a support plate; 611. a limiting hole; 62. a fastener.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 6, a dielectric resonator antenna module with large-angle scanning includes a substrate 1 and a plurality of antenna units arrayed on the substrate 1, wherein decoupling structures 3 are disposed on the antenna units.
From the above description, the beneficial effects of the present invention are: in the dielectric resonator antenna module, the decoupling structure 3 is arranged on the antenna units, so that the coupling phenomenon between two adjacent antenna units can be effectively improved, and the performance of the dielectric resonator antenna module is improved.
Furthermore, the distance between two adjacent antenna units is less than or equal to half of the wavelength of the working frequency band of the dielectric resonator antenna module scanned at a large angle.
As can be seen from the above description, the decoupling structure 3 on the antenna unit can effectively improve the coupling phenomenon between two adjacent antenna units, so that the distance between two adjacent antenna units can be set to be smaller, thereby increasing the scanning angle of the dielectric resonator antenna module and further improving the performance of the dielectric resonator antenna module.
Furthermore, the distance between two adjacent antenna units is less than or equal to 2/5 of the wavelength of the operating frequency band of the dielectric resonator antenna module with large-angle scanning.
From the above description, the distance between two adjacent antenna units in the dielectric resonator antenna module is 0.4 times of the wavelength, so that the overall size of the dielectric resonator antenna module can be effectively reduced, and the dielectric resonator antenna module can fully meet the trend of the mobile terminal equipment in light and thin.
Further, the antenna unit comprises a dielectric resonator 2, and the decoupling structure 3 is arranged on the top surface of the dielectric resonator 2.
Further, the decoupling structure 3 is arranged along an edge of the top surface of the dielectric resonator 2.
Further, the decoupling structure 3 includes a first branch 31, and a second branch 32 and a third branch 33 respectively connected to the first branch 31, where the second branch 32 and the third branch 33 are disposed opposite to each other.
As can be seen from the above description, the decoupling structure 3 has a simple structure and is easy to process.
Further, the decoupling structure 3 further includes a fourth branch 34 and a fifth branch 35 which are arranged in a collinear manner, the fourth branch 34 and the fifth branch 35 are both located between the second branch 32 and the third branch 33, the fourth branch 34 is arranged in parallel and close to the first branch 31, and a gap 4 is provided between the fourth branch 34 and the fifth branch 35.
As can be seen from the above description, the fourth branch 34 and the fifth branch 35 are disposed to improve the decoupling capability of the decoupling structure 3, so as to further improve the performance of the dielectric resonator antenna module.
Further, a ground layer 11 is arranged on the top surface of the substrate 1, a coupling slot 111 is arranged on the ground layer 11, and the antenna unit covers the coupling slot 111.
As can be seen from the above description, the dielectric resonator antenna module feeds the antenna element by coupling feeding.
Further, the antenna comprises a supporting bracket 6, wherein the supporting bracket 6 is connected to the substrate 1, and the supporting bracket 6 is provided with a limiting hole 611 for fixing the antenna unit.
As can be seen from the above description, the supporting bracket 6 is used to support and fix the antenna unit, thereby improving the structural stability of the dielectric resonator antenna module.
Example one
Referring to fig. 1 to 5, a first embodiment of the present invention is: a dielectric resonator antenna module capable of scanning at a large angle can be used in mobile terminal equipment, wherein the mobile terminal equipment comprises but is not limited to a mobile phone, a tablet personal computer, a smart watch and the like.
As shown in fig. 1, the dielectric resonator antenna module with large-angle scanning includes a substrate 1 and a plurality of antenna units arrayed on the substrate 1, where the antenna units are provided with decoupling structures 3, a distance between two adjacent antenna units is less than or equal to half of a wavelength of an operating frequency band of the dielectric resonator antenna module with large-angle scanning, and preferably, a distance between two adjacent antenna units is less than or equal to 2/5 of a wavelength of an operating frequency band of the dielectric resonator antenna module with large-angle scanning. Optionally, the plurality of antenna units are arranged in a row, and in this embodiment, the number of the antenna units is four; the interval between two adjacent antenna units is 0.4 wavelength, such as 4.6 mm; the substrate 1 is a multilayer PCB.
The antenna unit comprises a dielectric resonator 2, the decoupling structure 3 is arranged on the top surface of the dielectric resonator 2, and the decoupling structure 3 is arranged along the edge of the top surface of the dielectric resonator 2. The decoupling structure 3 is made of metal foil or metal sheet, such as copper foil, copper sheet, etc.
As shown in fig. 2, in this embodiment, the decoupling structure 3 includes a first branch 31, and a second branch 32 and a third branch 33 respectively connected to the first branch 31, where the second branch 32 and the third branch 33 are disposed opposite to each other. Further, the decoupling structure 3 further includes a fourth branch 34 and a fifth branch 35 which are arranged in a collinear manner, the fourth branch 34 and the fifth branch 35 are both located between the second branch 32 and the third branch 33, the fourth branch 34 is arranged in parallel and close to the first branch 31, and a gap 4 is provided between the fourth branch 34 and the fifth branch 35.
Referring to fig. 1 and 2, as a preferred embodiment, the dielectric resonator 2 has a rectangular shape with a length of 3.4mm, a width of 3.4mm, a height of 1mm, and a dielectric constant of 21; one end face of the first branch 31 is flush with the first side face 21 of the dielectric resonator 2, the other end face of the first branch 31 is flush with the second side face of the dielectric resonator 2, the side face of the first branch 31 far away from the second branch 32 is flush with the third side face of the dielectric resonator 2, and the end face of the second branch 32 far away from the first branch 31 and the end face of the third branch 33 far away from the first branch 31 are respectively flush with the fourth side face 22 of the dielectric resonator 2. In the dielectric resonator 2, the first side surface 21 and the second side surface are a set of opposing side surfaces, and the third side surface and the fourth side surface 22 are a set of opposing side surfaces. The side of the second branch 32 away from the third branch 33 and the side of the third branch 33 away from the second branch 32 are located between the first side 21 and the second side, respectively.
As shown in fig. 2, in detail, a ground layer 11 is disposed on the top surface of the substrate 1, a coupling slot 111 is disposed on the ground layer 11, and the antenna unit is disposed on the ground layer 11 and covers the coupling slot 111. In this embodiment, the projection area of the decoupling structure 3 surrounds the projection area of the coupling gap 111 by projection along the thickness direction of the substrate 1, and in more detail, the coupling gap 111 is in a straight line shape, and the projection area of the coupling gap 111 is located in the center of the projection area of the decoupling structure 3; the coupling slot 111 is aligned with the gap 4, in other words the gap 4 is located on the extension of the coupling slot 111.
Referring back to fig. 1, a chip assembly 5 is disposed on a side of the substrate 1 away from the antenna unit, the chip assembly 5 includes a digital integrated circuit chip, a power chip and a radio frequency chip, the digital integrated circuit chip and the power chip are electrically connected to the radio frequency chip, and the radio frequency chip is connected to the antenna unit. The radio frequency chip is used for feeding power to the antenna units, and comprises elements such as a phase shifter, an amplifier and the like, wherein the phase shifter is used for providing phase difference among the antenna units to realize the beam scanning capability, and the amplifier is used for compensating the loss of the phase shifter; the digital integrated circuit chip is used for supplying power to the radio frequency chip.
As shown in fig. 3, a coupling sheet 12 and a matching network 13 which are electrically connected are arranged in the substrate 1, the coupling sheet 12 is matched with the coupling slot 111, the matching network 13 is connected with the radio frequency chip, and the arrangement of the matching network 13 can increase the bandwidth of the dielectric resonator antenna module with large-angle scanning, so as to further improve the antenna performance of the dielectric resonator antenna module with large-angle scanning.
The S parameter test result of the dielectric resonator antenna module with large angle scanning in this embodiment is shown in fig. 4, and it can be known from fig. 4 that the operating frequency of the dielectric resonator antenna module with large angle scanning in this embodiment is 24.5-27.5GHz, and basically meets the requirement of N258 frequency band of 5G.
Fig. 5 shows the result of the scan angle test of the dielectric resonator antenna module with large-angle scan in this embodiment, and it can be known from fig. 5 that the scan angle of the dielectric resonator antenna module with large-angle scan in this embodiment can reach ± 60 °, which is 20 degrees wider than the scan range of the dielectric resonator antenna module in the prior art.
Example two
Referring to fig. 6, the second embodiment of the present invention is further optimized on the basis of the first embodiment, and is different from the first embodiment in that: the dielectric resonator antenna module with large-angle scanning further comprises a supporting bracket 6, the supporting bracket 6 is connected to the substrate 1, and a limiting hole 611 used for fixing the antenna unit is formed in the supporting bracket 6. In a preferred embodiment, the supporting bracket 6 is made of plastic.
In detail, the supporting bracket 6 includes a supporting plate 61 and fasteners 62 disposed at two ends of the supporting plate 61, the limiting hole 611 is disposed on the supporting plate 61, and the supporting bracket 6 is fastened to the substrate 1 through the fasteners 62. In more detail, the fastener 62 is L-shaped. The supporting plate 61 and the fastener 62 are integrally formed by injection molding.
It will be readily appreciated that in other embodiments, the support bracket 6 may also be fixed to the base plate 1 by other means, such as gluing, etc.
To sum up, the utility model provides a dielectric resonator antenna module and mobile terminal equipment of wide-angle scanning through set up decoupling structure on the antenna element of array, has improved the coupling condition between the antenna element effectively for adjacent antenna element can set up and more be close to some, thereby increases the scanning angle scope, has strengthened the antenna performance effectively, has reduced the whole volume of antenna module, is particularly suitable for 5G communication.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a dielectric resonator antenna module of wide-angle scanning, includes the base plate and the array is in a plurality of antenna element on the base plate which characterized in that: and a decoupling structure is arranged on the antenna unit.
2. The large angle scanning dielectric resonator antenna module of claim 1, wherein: and the distance between two adjacent antenna units is less than or equal to half of the wavelength of the working frequency band of the dielectric resonator antenna module scanned at a large angle.
3. The large angle scanning dielectric resonator antenna module of claim 2, wherein: and the distance between two adjacent antenna units is less than or equal to 2/5 of the wavelength of the working frequency band of the dielectric resonator antenna module scanned at a large angle.
4. The large angle scanning dielectric resonator antenna module of claim 1, wherein: the antenna unit comprises a dielectric resonator, and the decoupling structure is arranged on the top surface of the dielectric resonator.
5. The large angle scanning dielectric resonator antenna module of claim 4, wherein: the decoupling structure is disposed along an edge of a top surface of the dielectric resonator.
6. The large angle scanning dielectric resonator antenna module of claim 4, wherein: the decoupling structure comprises a first branch and a second branch and a third branch which are vertically connected with the first branch respectively, and the second branch and the third branch are arranged oppositely.
7. The large angle scanning dielectric resonator antenna module of claim 6, wherein: the decoupling structure further comprises a fourth branch and a fifth branch which are arranged in a collinear manner, the fourth branch and the fifth branch are both located between the second branch and the third branch, the fourth branch is parallel to and close to the first branch, and a gap is formed between the fourth branch and the fifth branch.
8. The large angle scanning dielectric resonator antenna module of claim 1, wherein: the top surface of the substrate is provided with a stratum, the stratum is provided with a coupling gap, and the antenna unit covers the coupling gap.
9. The large angle scanning dielectric resonator antenna module of claim 1, wherein: the antenna unit is characterized by further comprising a supporting bracket, wherein the supporting bracket is connected to the substrate, and the supporting bracket is provided with a limiting hole for fixing the antenna unit.
10. Mobile terminal equipment, its characterized in that: a dielectric resonator antenna module comprising a large angle scan as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120575019.4U CN215266672U (en) | 2021-03-19 | 2021-03-19 | Dielectric resonator antenna module with large-angle scanning and mobile terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120575019.4U CN215266672U (en) | 2021-03-19 | 2021-03-19 | Dielectric resonator antenna module with large-angle scanning and mobile terminal equipment |
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| CN215266672U true CN215266672U (en) | 2021-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193369A (en) * | 2021-03-19 | 2021-07-30 | 深圳市信维通信股份有限公司 | Dielectric resonator antenna module with large-angle scanning and mobile terminal equipment |
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- 2021-03-19 CN CN202120575019.4U patent/CN215266672U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193369A (en) * | 2021-03-19 | 2021-07-30 | 深圳市信维通信股份有限公司 | Dielectric resonator antenna module with large-angle scanning and mobile terminal equipment |
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