CN212626042U - Dual-polarization 5G millimeter wave antenna module and mobile terminal equipment - Google Patents
Dual-polarization 5G millimeter wave antenna module and mobile terminal equipment Download PDFInfo
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- CN212626042U CN212626042U CN202021368816.7U CN202021368816U CN212626042U CN 212626042 U CN212626042 U CN 212626042U CN 202021368816 U CN202021368816 U CN 202021368816U CN 212626042 U CN212626042 U CN 212626042U
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Abstract
The utility model discloses a double polarization 5G millimeter wave antenna module and mobile terminal equipment, double polarization 5G millimeter wave antenna module includes a plurality of antenna element, antenna element includes the base member, be equipped with first metal level and second metal level on the base member, be equipped with the main gap on the first metal level and communicate the first gap and the second gap in main gap respectively, first gap is perpendicular with the second gap, the second metal level include with the first feed minor matters of first gap coupling and with the second feed minor matters of second gap coupling. The feed structure is simple, and the dual-polarization effect is achieved; the PCB can be used as a substrate, so that the production and assembly are easy, the subsequent integration with a chip is convenient, the size is small, and the section is low; the coverage frequency range is wide; the antenna can be designed in combination with a metal shell of the mobile terminal equipment, the influence of the radiation performance of the millimeter wave antenna under a metal frame of the mobile terminal equipment is perfectly solved, and the performance of the antenna is effectively ensured.
Description
Technical Field
The utility model relates to the technical field of antennas, especially, relate to dual polarization 5G millimeter wave antenna module and mobile terminal equipment.
Background
5G is the focus of research and development in the global industry, and it has become common knowledge in the industry to develop 5G technology and establish the 5G standard. The international telecommunications union ITU identified three major application scenarios for 5G at ITU-RWP5D meeting No. 22 held 6 months 2015: enhanced mobile broadband, large-scale machine communication, high-reliability and low-delay communication. The 3 application scenes correspond to different key indexes respectively, wherein the peak speed of a user in the enhanced mobile bandwidth scene is 20Gbps, and the lowest user experience rate is 100 Mbps. The unique high carrier frequency and large bandwidth characteristics of millimeter waves are the main means for realizing 5G ultrahigh data transmission rate. In addition, the space reserved for the 5G antenna in future mobile phones is small, and the number of selectable positions is small, so that a miniaturized antenna module is designed.
The metal frame structure is a mainstream scheme in the structural design of the mobile phone, and can provide better protection, aesthetic degree, thermal diffusion and user experience, but due to the shielding effect of metal on electromagnetic waves, the radiation performance of the upper antenna and the lower antenna can be seriously influenced, and the gain of the antenna is reduced, so that the combined design of the mobile terminal equipment (such as a mobile phone) and the antenna module under the condition of the metal frame is of great significance.
At present, some 5G millimeter wave antenna designs under a metal frame are disclosed in the existing patents or patent applications, but the existing patents or patent applications have many defects, such as Chinese patent application with the publication number of CN 109193133A and Chinese patent application with the publication number of CN109193134A, and the technical scheme does not consider radio frequency front end integration; for example, the chinese utility model patent with publication number CN 209544619U and the chinese invention patent application with publication number CN 109066079a have complicated feed structure and large difficulty in actual production and assembly; for example, the technical scheme of the invention is a single polarization module, and the technical scheme of the invention is that the double polarization module has obvious advantages in calculating the EIRP in the TS 38.101-25G terminal radio frequency technical specification of the current 3GPP, such as the chinese utility model with the publication number CN207517869U, the chinese utility model with the publication number CN207781866U, the chinese utility model with the publication number CN208460981U, and the chinese invention patent with the publication number CN 108288757A. According to the 3GPP TS 38.101-25G terminal rf specification and TR38.817 terminal rf technical report, it is known that a 5GmmWave antenna needs to cover N257(26.5-29.5GHz), N258(24.25-27.25GHz), N260(37-40GHz) and N261(27.5-28.35GHz), while a high-pass antenna module in the market only covers N257 bands (26.5-29.5 GHz).
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the dual-polarized 5G millimeter wave antenna module is simple in structure and wide in coverage frequency range, and the mobile terminal equipment is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: dual polarization 5G millimeter wave antenna module, including a plurality of antenna element, antenna element includes the base member, be equipped with first metal layer and second metal layer on the base member, be equipped with the main gap on the first metal layer and communicate respectively the first gap and the second gap of main gap, first gap is perpendicular with the second gap, the second metal layer include with the first feed minor matters of first gap coupling and with the second feed minor matters of second gap coupling.
Further, the first feeding branch spans across the first gap and the second feeding branch spans across the second gap in projection along the thickness direction of the substrate.
Further, the main gap is circular.
Furthermore, the antenna unit further comprises a plurality of auxiliary gaps arranged on the first metal layer, and the auxiliary gaps are arranged close to the main gaps.
Further, a third metal layer and a matching network are further arranged on the substrate, the third metal layer is located on one side, away from the first metal layer, of the second metal layer, the matching network is located on one side, away from the second metal layer, of the third metal layer, and the first feed branch and the second feed branch are respectively communicated with the matching network.
Furthermore, a fourth metal layer is further arranged on the base body, the matching network is located between the third metal layer and the fourth metal layer, and a partition wall arranged around the antenna unit is further arranged on the base body.
Further, the partition wall comprises a plurality of first metalized holes which are communicated with the first metal layer and the fourth metal layer.
Furthermore, a plurality of second metallization holes are further arranged between the third metal layer and the fourth metal layer, the second metallization holes are arranged around the matching network, and the second metallization holes are communicated with the third metal layer and the fourth metal layer.
Further, the chip module is conducted with the matching network.
In order to solve the technical problem, the utility model discloses still adopt following technical scheme: the mobile terminal device comprises a metal shell and the dual-polarized 5G millimeter wave antenna module, wherein the dual-polarized 5G millimeter wave antenna module is arranged on the metal shell.
The beneficial effects of the utility model reside in that:
(1) the dual-microstrip coupling feed source aperture antenna is adopted, the feed structure is simple, and meanwhile, the dual-polarization antenna has the advantage of dual polarization, and compared with a single-polarization antenna, the EIRP is greatly improved;
(2) the PCB can be used as a substrate, so that the PCB is easy to produce and assemble, convenient to integrate with a chip subsequently, small in size, low in section and easy to place in small-sized mobile terminal equipment (such as a mobile phone);
(3) the dual-polarized 5G millimeter wave antenna module can effectively cover N257, N258 and N261 frequency bands, and the coverage frequency band is wide;
(4) the dual-polarization 5G millimeter wave antenna module can be designed in combination with a metal shell of the mobile terminal device (namely, the metal shell of the mobile terminal device is used as a first metal layer), the influence of the radiation performance of the millimeter wave antenna under a metal frame of the mobile terminal device is perfectly solved, and the performance of the antenna is effectively ensured.
Drawings
Fig. 1 is a schematic structural diagram of an overall structure of a dual-polarized 5G millimeter wave antenna module according to a first embodiment of the present invention;
fig. 2 is a top view of the dual-polarized 5G millimeter wave antenna module according to the first embodiment of the present invention (after the substrate is hidden);
fig. 3 is a top view of the dual-polarized 5G millimeter wave antenna module according to the first embodiment of the present invention (after the substrate and the first metal layer are hidden);
fig. 4 is a top view of the dual-polarized 5G millimeter wave antenna module according to the first embodiment of the present invention (after hiding the substrate, the first metal layer, and the third metal layer);
fig. 5 is a front view (after the substrate is hidden) of the dual-polarized 5G millimeter wave antenna module according to the first embodiment of the present invention;
FIG. 6 is an enlarged view of detail A in FIG. 5;
fig. 7 is a simulation curve diagram of S parameters of the antenna unit in the dual-polarized 5G millimeter wave antenna module according to the first embodiment of the present invention in the first polarization direction;
fig. 8 is a simulation curve diagram of S parameters of the antenna unit in the dual-polarized 5G millimeter wave antenna module according to the first embodiment of the present invention in the second polarization direction.
Description of reference numerals:
1. a substrate;
2. a first metal layer; 21. a main slit; 22. a first slit; 23. a second slit; 24. a secondary gap;
3. a second metal layer; 31. a first feed stub; 32. a second feed branch;
4. a third metal layer;
5. a fourth metal layer;
6. a matching network;
7. a partition wall; 71. a first metalized hole;
8. a second metallized hole;
9. a chip assembly.
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 8, the dual-polarized 5G millimeter wave antenna module includes a plurality of antenna units, each of the antenna units includes a substrate 1, a first metal layer 2 and a second metal layer 3 are disposed on the substrate 1, a main slot 21 and a first slot 22 and a second slot 23 respectively communicating with the main slot 21 are disposed on the first metal layer 2, the first slot 22 is perpendicular to the second slot 23, and the second metal layer 3 includes a first feeding branch 31 coupled to the first slot 22 and a second feeding branch 32 coupled to the second slot 23.
The working principle of the utility model is as follows: the main slot 21 and the first and second slots form an antenna radiation area, and two polarized signals are coupled to the main slot 21 on the first metal layer 2 through the first and second feed branches, so that the antenna function is realized.
From the above description, the beneficial effects of the present invention are:
(1) the dual-microstrip coupling feed source aperture antenna is adopted, the feed structure is simple, and meanwhile, the dual-polarization antenna has the advantage of dual polarization, and compared with a single-polarization antenna, the EIRP is greatly improved;
(2) the PCB can be used as the substrate 1, so that the production and assembly are easy, the subsequent integration with a chip is convenient, the size is small, the section is low, and the PCB can be easily placed in small-sized mobile terminal equipment (such as a mobile phone);
(3) the dual-polarized 5G millimeter wave antenna module can effectively cover N257, N258 and N261 frequency bands, and the coverage frequency band is wide;
(4) the dual-polarization 5G millimeter wave antenna module can be designed in combination with a metal shell of the mobile terminal device (namely, the metal shell of the mobile terminal device is used as the first metal layer 2), the influence of the radiation performance of the millimeter wave antenna under a metal frame of the mobile terminal device is perfectly solved, and the performance of the antenna is effectively guaranteed.
Further, the first feeding branch 31 crosses the first slot 22, and the second feeding branch 32 crosses the second slot 23, projected along the thickness direction of the substrate 1.
As can be seen from the above description, the first feeding branch 31 and the first slot 22 can be well coupled, and the second feeding branch 32 and the second slot 23 can be well coupled.
Further, the main slit 21 is circular.
As can be seen from the above description, the main slit 21 is regular in shape and easy to machine.
Further, the antenna unit further includes a plurality of sub slots 24 disposed on the first metal layer 2, and the sub slots 24 are disposed close to the main slot 21.
As can be seen from the above description, the sub slot 24 disposed close to the main slot 21 can reduce the size of the main slot 21, which is beneficial to miniaturizing the dual-polarized 5G millimeter wave antenna module, and can also increase the antenna bandwidth.
Further, a third metal layer 4 and a matching network 6 are further disposed on the substrate 1, the third metal layer 4 is located on one side of the second metal layer 3 away from the first metal layer 2, the matching network 6 is located on one side of the third metal layer 4 away from the second metal layer 3, and the first feeding branch 31 and the second feeding branch 32 are respectively conducted with the matching network 6.
According to the description, the specific structure of the matching network 6 is designed, the bandwidth of the dual-polarized 5G millimeter wave antenna module is increased, and the performance of the dual-polarized 5G millimeter wave antenna module is improved.
Further, a fourth metal layer 5 is further disposed on the base 1, the matching network 6 is located between the third metal layer 4 and the fourth metal layer 5, and a partition wall 7 disposed around the antenna unit is further disposed on the base 1.
As can be seen from the above description, the arrangement of the isolation wall 7 can isolate the mutual interference between the antenna units and the interference of external signals to the antenna units, and is favorable for ensuring the performance of the dual-polarized 5G millimeter wave antenna module.
Further, the partition wall 7 includes a plurality of first metallized holes 71 connecting the first metal layer 2 and the fourth metal layer 5.
As can be seen from the above description, the partition wall 7 is simple in construction and easy to manufacture.
Further, a plurality of second metalized holes 8 are further formed between the third metal layer 4 and the fourth metal layer 5, the second metalized holes 8 are arranged around the matching network 6, and the second metalized holes 8 communicate with the third metal layer 4 and the fourth metal layer 5.
As can be seen from the above description, the provision of the second metallized hole 8 can reduce signal leakage and interference of the matching network 6.
Further, the chip component 9 is further included, and the chip component 9 is in conduction with the matching network 6.
As can be seen from the above description, the chip assembly 9 includes a radio frequency chip, and the radio frequency chip includes elements such as a phase shifter and an amplifier, wherein the phase shifter is capable of providing a phase difference between antenna elements to implement beam scanning, and the amplifier is used for compensating for loss of the phase shifter.
The mobile terminal device comprises a metal shell and the dual-polarized 5G millimeter wave antenna module, wherein the dual-polarized 5G millimeter wave antenna module is arranged on the metal shell.
From the above description, it can be seen that the mobile terminal device has at least all the beneficial effects of the dual-polarized 5G millimeter wave antenna module.
Example one
Referring to fig. 1 to 8, a first embodiment of the present invention is: the mobile terminal equipment, such as a mobile phone, a tablet computer, a smart watch and the like, comprises a metal shell and a dual-polarized 5G millimeter wave antenna module, wherein the dual-polarized 5G millimeter wave antenna module is arranged on the metal shell.
Referring to fig. 1 to fig. 3 and fig. 6, the dual-polarized 5G millimeter wave antenna module includes a plurality of antenna elements, the antenna unit comprises a substrate 1, a first metal layer 2 and a second metal layer 3 are arranged on the substrate 1, the first metal layer 2 is provided with a main gap 21 and a first gap 22 and a second gap 23 respectively communicated with the main gap 21, the first slot 22 is perpendicular to the second slot 23, the second metal layer 3 includes a first feeding branch 31 coupled to the first slot 22 and a second feeding branch 32 coupled to the second slot 23, and the projections are projected along the thickness direction of the substrate 1, the first feed stub 31 spans across the first slot 22, the second feed stub 32 spans across the second slot 23, optionally, the first feeding branch 31 is perpendicular to the first slot 22, and the second feeding branch 32 is perpendicular to the second slot 23. In this embodiment, the number of the antenna units is four, and the four antenna units are arranged in a row. Optionally, the substrate 1 is a multilayer PCB; the metal shell includes a metal back shell, the metal back shell is the first metal layer 2, and at this time, the main gap 21, the first gap 22, and the second gap 23 are disposed on the metal back shell.
In this embodiment, the main slit 21 is circular, and in other embodiments, the main slit 21 may have other shapes.
As shown in fig. 1 and 2, in order to make the size of the main slot 21 smaller and increase the bandwidth of the antenna, the antenna unit further includes a plurality of sub slots 24 disposed on the first metal layer 2, and the sub slots 24 are disposed close to the main slot 21. In this embodiment, the number of the auxiliary slits 24 is plural, and the auxiliary slits 24 are circular, and optionally, the number of the auxiliary slits 24 is plural and is uniformly distributed around the main slit 21. It is to be understood that the size and shape of the different sub slits 24 may be different or the same.
Referring to fig. 1 and fig. 3 to fig. 6, a third metal layer 4, a fourth metal layer 5 and a matching network 6 are further disposed on the substrate 1, the third metal layer 4 is located on a side of the second metal layer 3 away from the first metal layer 2, the fourth metal layer 5 is located on a side of the third metal layer 4 away from the second metal layer 3, the matching network 6 is located between the third metal layer 4 and the fourth metal layer 5, the first feeding branch 31 and the second feeding branch 32 are respectively connected to the matching network 6, and the substrate 1 further has a partition wall 7 disposed around the antenna unit. Specifically, the partition wall 7 includes a plurality of first metallized holes 71 communicating the first metal layer 2 and the fourth metal layer 5. In this embodiment, the isolation walls 7 are respectively disposed around the four antenna units.
Referring to fig. 3 to 6, a plurality of second metalized holes 8 are further disposed between the third metal layer 4 and the fourth metal layer 5, the second metalized holes 8 are disposed around the matching network 6, and the second metalized holes 8 communicate with the third metal layer 4 and the fourth metal layer 5. The matching network 6 comprises a matching wire, the second metalized hole 8 is arranged around the matching wire, and the matching wire is conducted with the first and second feed branches through the metalized hole. The bandwidth and the impedance of the dual-polarized 5G millimeter wave antenna module can be adjusted by adjusting the parameters such as the width and the bending times of the matching wiring.
As shown in fig. 1 and 5, the chip module 9 is further included, the chip module 9 is in electrical communication with the matching network 6, and optionally, the chip module 9 is located on a side of the fourth metal layer 5 away from the third metal layer 4. The chip assembly 9 comprises a radio frequency chip, a digital integrated circuit chip and a power chip, wherein the radio frequency chip comprises elements such as a phase shifter and an amplifier, the phase shifter is used for providing phase difference between antenna units to achieve beam scanning capacity, the amplifier is used for compensating loss of the phase shifter, the digital integrated circuit chip is controlled by the radio frequency chip, and the power chip is used for providing power for the radio frequency chip.
Fig. 7 is a simulation graph of S-parameters of antenna elements in a dual-polarized 5G millimeter wave antenna module in a first polarization direction; fig. 8 is a simulation graph of S-parameters of antenna elements in a dual-polarization 5G millimeter wave antenna module in a second polarization direction. As can be seen from fig. 7 and 8, the antenna units in the dual-polarized 5G millimeter wave antenna module can stably operate in the 24-30GHz frequency band in both polarization directions, so that the dual-polarized 5G millimeter wave antenna module can effectively cover the N257, N258, N260, and N261 frequency bands.
In summary, the dual-polarization 5G millimeter wave antenna module and the mobile terminal device provided by the utility model have simple feed structure, and simultaneously have the advantage of dual polarization, and the EIRP is greatly improved; the PCB can be used as a substrate, so that the PCB is easy to produce and assemble, convenient to integrate with a chip subsequently, small in size, low in section and easy to place in small-sized mobile terminal equipment; n257, N258 and N261 frequency bands can be effectively covered, and the covered frequency bands are wide; the dual-polarized 5G millimeter wave antenna module can be designed in combination with the metal shell of the mobile terminal device, the influence of the radiation performance of the millimeter wave antenna under the metal frame of the mobile terminal device is perfectly solved, and the performance of the antenna is effectively guaranteed.
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. Dual polarization 5G millimeter wave antenna module, including a plurality of antenna element, antenna element includes the base member, its characterized in that: the substrate is provided with a first metal layer and a second metal layer, the first metal layer is provided with a main gap and a first gap and a second gap which are respectively communicated with the main gap, the first gap is perpendicular to the second gap, and the second metal layer comprises a first feed branch coupled with the first gap and a second feed branch coupled with the second gap.
2. The dual-polarized 5G millimeter wave antenna module of claim 1, wherein: and the first feeding branch spans across the first gap and the second feeding branch spans across the second gap in projection along the thickness direction of the substrate.
3. The dual-polarized 5G millimeter wave antenna module of claim 1, wherein: the main slit is circular.
4. The dual-polarized 5G millimeter wave antenna module of claim 1, wherein: the antenna unit further comprises a plurality of auxiliary gaps arranged on the first metal layer, and the auxiliary gaps are close to the main gaps.
5. The dual-polarized 5G millimeter wave antenna module of claim 1, wherein: the substrate is further provided with a third metal layer and a matching network, the third metal layer is located on one side, away from the first metal layer, of the second metal layer, the matching network is located on one side, away from the second metal layer, of the third metal layer, and the first feed branch and the second feed branch are respectively communicated with the matching network.
6. The dual polarized 5G millimeter wave antenna module of claim 5, wherein: the base body is further provided with a fourth metal layer, the matching network is located between the third metal layer and the fourth metal layer, and the base body is further provided with a separation wall arranged around the antenna unit.
7. The dual-polarized 5G millimeter wave antenna module of claim 6, wherein: the isolation wall comprises a plurality of first metalized holes which are communicated with the first metal layer and the fourth metal layer.
8. The dual-polarized 5G millimeter wave antenna module of claim 6, wherein: a plurality of second metallization holes are further formed between the third metal layer and the fourth metal layer, the second metallization holes are arranged around the matching network, and the second metallization holes are communicated with the third metal layer and the fourth metal layer.
9. The dual polarized 5G millimeter wave antenna module of claim 5, wherein: the chip component is conducted with the matching network.
10. Mobile terminal equipment, including metal casing, its characterized in that: the dual-polarized 5G millimeter wave antenna module of any of claims 1 to 9, the dual-polarized 5G millimeter wave antenna module being disposed on the metal housing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111916896A (en) * | 2020-07-13 | 2020-11-10 | 深圳市信维通信股份有限公司 | Dual-polarization 5G millimeter wave antenna module and mobile terminal equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111916896A (en) * | 2020-07-13 | 2020-11-10 | 深圳市信维通信股份有限公司 | Dual-polarization 5G millimeter wave antenna module and mobile terminal equipment |
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