CN108417995B - Antenna unit and array antenna for 5G mobile communication - Google Patents
Antenna unit and array antenna for 5G mobile communication Download PDFInfo
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- CN108417995B CN108417995B CN201810449630.5A CN201810449630A CN108417995B CN 108417995 B CN108417995 B CN 108417995B CN 201810449630 A CN201810449630 A CN 201810449630A CN 108417995 B CN108417995 B CN 108417995B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses an antenna unit and an array antenna for 5G mobile communication, which comprise a feed unit and a radiation unit, wherein the feed unit comprises a PCB dielectric layer, a stratum and a feed line, the feed line is arranged on the top surface of the PCB dielectric layer, and the stratum is arranged on the bottom surface of the PCB dielectric layer; the radiating unit comprises a metal piece and a feed radiating piece, wherein a containing cavity is formed in one side, away from the PCB dielectric layer, of the metal piece, and a containing hole is formed in one side, close to the PCB dielectric layer, of the containing cavity; the feeding radiation piece is nail-shaped, the feeding radiation piece comprises a columnar feeding part and a platy radiation part, one end of the feeding part is connected with the radiation part, the other end of the feeding part penetrates through the accommodating hole to be electrically connected with the feeder line, and the radiation part is positioned in the accommodating cavity; the metal pieces are respectively and electrically connected with the stratum and the radiation part. The structure is simple, and the processing steps are few.
Description
Technical Field
The present invention relates to the antenna industry, and in particular, to an antenna unit and an array antenna for 5G mobile communications.
Background
The millimeter wave band is one of the frequency bands of the fifth generation (5G) mobile communication because it can provide a large bandwidth, a high user capacity, and a data transmission rate reaching several GB per second.
However, millimeter waves have a large path loss when propagating in free space, so a phased array antenna with a narrow beam width and adjustable beam is required to offset the effect of the large path loss with a large gain. In recent years, mobile devices with metal rims are becoming more and more trend, so millimeter wave antennas should also consider this situation.
In the article Bin Yu, et al, "a Novel 28GHz Beam Steering Array for 5G Mobile Device with Metallic Casing Application", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL.66, NO., pp.462-466, january 2018, a cavity slot array antenna operating in the 28GHz band (as defined by the us FCC) and formed by slotting a metal rim is proposed, which has a dimension in the array direction greater than half a wavelength and requires slotting on both sides of the metal rim, side slots for assembling step nails (stepped for impedance matching), and top slots for antenna radiation. The metal frame needs grooving on two sides.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: an antenna unit and an array antenna for 5G mobile communication are provided, which are simple to manufacture.
In order to solve the technical problems, the invention adopts the following technical scheme: the antenna unit for 5G mobile communication comprises a feed unit and a radiation unit, wherein the feed unit comprises a PCB dielectric layer, a stratum and a feed line, the feed line is arranged on the top surface of the PCB dielectric layer, and the stratum is arranged on the bottom surface of the PCB dielectric layer; the radiating unit comprises a metal piece and a feed radiating piece, wherein a containing cavity is formed in one side, away from the PCB dielectric layer, of the metal piece, and a containing hole is formed in one side, close to the PCB dielectric layer, of the containing cavity; the feeding radiation piece is nail-shaped, the feeding radiation piece comprises a columnar feeding part and a platy radiation part, one end of the feeding part is connected with the radiation part, the other end of the feeding part penetrates through the containing hole to be electrically connected with the feeder line, and the radiation part is positioned in the containing cavity; the metal piece is electrically connected with the stratum and the radiation part respectively.
In order to solve the technical problems, the invention also adopts the following technical scheme: the array antenna is arranged on the metal frame and comprises the antenna units for 5G mobile communication, wherein the number of the antenna units for 5G mobile communication is N, and the antenna units for 5G mobile communication are arranged on the metal frame in an array of Nx 1; n is an integer greater than 2, and the metal piece is the metal frame.
In order to solve the technical problems, the invention also adopts the following technical scheme: the antenna unit for 5G mobile communication comprises a feed unit and a radiation unit, wherein the feed unit comprises a PCB dielectric layer, a stratum and a feed line, the feed line is arranged on the bottom surface of the PCB dielectric layer, and the stratum is arranged on the top surface of the PCB dielectric layer; the radiating unit comprises a dielectric piece and a feed radiating piece, wherein the dielectric piece is arranged on one side of the stratum, which is far away from the dielectric layer of the PCB, the top surface of the dielectric piece is provided with a metal ring, the dielectric piece is provided with a plurality of through holes, the metal ring is electrically connected with the stratum through the through holes, and the plurality of through holes are connected into a circle along the metal ring so as to form a containing cavity together with the stratum on the dielectric piece; the feed radiation piece is nail-shaped and is located in the accommodating cavity, the feed radiation piece comprises a feed portion formed by a via hole and a plate-shaped radiation portion, one end of the feed portion is connected with the radiation portion, the other end of the feed portion is electrically connected with the feed line, the radiation portion is arranged on the top surface of the dielectric piece and is located in the accommodating cavity, and the first side edge of the radiation portion is electrically connected with the metal ring.
The invention has the beneficial effects that: the assembly of the feed radiation piece and the antenna radiation can be realized by arranging the accommodating cavity on one side surface of the metal frame, compared with the prior art, the structure is simpler, the processing steps are fewer, the production efficiency is improved, and the manufacturing cost of the mobile terminal equipment is reduced; the 5G millimeter wave antenna unit for mobile communication occupies small side surface area of the metal frame, and has small influence on the structural strength of the metal frame; the width of the 5G millimeter wave antenna unit for mobile communication in the array arrangement direction is smaller than half wavelength, which is beneficial to improving isolation between units and scanning at a large angle and obtaining low back lobe.
Drawings
Fig. 1 is a schematic diagram of an array antenna fabricated on a metal frame according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an antenna unit for 5G mobile communication according to an embodiment of the present invention;
fig. 3 is an exploded view of an antenna unit for 5G mobile communication according to an embodiment of the present invention;
fig. 4 is a diagram of return loss simulation results of an antenna unit for 5G mobile communication according to an embodiment of the present invention;
fig. 5 is a radiation pattern of an antenna unit for 5G mobile communication according to a first embodiment of the present invention;
fig. 6 is an S-parameter diagram of an array antenna on a metal frame according to a first embodiment of the present invention;
fig. 7 is a scanning diagram of an array antenna on a metal frame at 28GHz according to the first embodiment of the present invention;
fig. 8 is a three-dimensional scan (scan angle=0°) at 28GHz of an array antenna on a metal frame according to the first embodiment of the present invention;
fig. 9 is a three-dimensional scan (scan angle=30°) at 28GHz of an array antenna on a metal frame according to the first embodiment of the present invention;
fig. 10 is a three-dimensional scan (scan angle=60°) at 28GHz of an array antenna on a metal frame according to the first embodiment of the present invention;
fig. 11 is a schematic structural diagram of an antenna unit for 5G mobile communication fabricated on a PCB board according to a second embodiment of the present invention.
Description of the reference numerals:
1. an array antenna; 2. a power feeding unit; 21. a PCB dielectric layer; 22. a formation; 23. a feeder line; 3. a radiation unit; 31. a metal piece; 311. a receiving chamber; 312. an accommodation hole; 32. a feed radiating member; 321. a power feeding section; 322. a radiation section; 3221. a first side; 3222. a second side; 33. a dielectric member; 331. a via hole; 34. a metal ring; 41. a first filler; 42. a second filler; 100. a metal frame; 101. a left frame; 102. a right frame; 103. an upper frame; 104. a lower frame; 105. a metal middle plate.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The most critical concept of the invention is as follows: the radiation unit is formed by the accommodating cavity and the radiation part.
Referring to fig. 1 to 11, an antenna unit for 5G mobile communication includes a feeding unit 2 and a radiating unit 3, wherein the feeding unit 2 includes a PCB board dielectric layer 21, a ground layer 22 and a feeding line 23, the feeding line 23 is disposed on the top surface of the PCB board dielectric layer 21, and the ground layer 22 is disposed on the bottom surface of the PCB board dielectric layer 21; the radiating unit 3 comprises a metal piece 31 and a feed radiating piece 32, wherein a containing cavity 311 is arranged on one side of the metal piece 31 far away from the PCB dielectric layer 21, and a containing hole 312 is arranged on one side of the containing cavity 311 near the PCB dielectric layer 21; the feeding radiation member 32 is in a nail shape, the feeding radiation member 32 comprises a columnar feeding portion 321 and a plate-shaped radiation portion 322, one end of the feeding portion 321 is connected with the radiation portion 322, the other end of the feeding portion 321 penetrates through the accommodating hole 312 to be electrically connected with the feeding line 23, and the radiation portion 322 is located in the accommodating cavity 311; the metal members 31 are electrically connected to the ground layer 22 and the radiating portions 322, respectively.
The array antenna 1 is arranged on the metal frame 100 and comprises the antenna units for 5G mobile communication, wherein the number of the antenna units for 5G mobile communication is N, and the antenna units for 5G mobile communication are arranged in an array of Nx1 on the metal frame 100; n is an integer greater than 2, and the metal member 31 is the metal frame 100.
From the above description, the beneficial effects of the invention are as follows: the assembly of the feed radiation piece and the antenna radiation can be realized by arranging the accommodating cavity on one side surface of the metal frame, compared with the prior art, the structure is simpler, the processing steps are fewer, the production efficiency is improved, and the manufacturing cost of the mobile terminal equipment is reduced; the 5G millimeter wave antenna unit for mobile communication occupies small side surface area of the metal frame, and has small influence on the structural strength of the metal frame; the width of the 5G millimeter wave antenna unit for mobile communication in the array arrangement direction is smaller than half wavelength, which is beneficial to improving isolation between units and scanning at a large angle and obtaining low back lobe.
Further, a connection point between the radiating portion 322 and the feeding portion 321 is disposed near the top surface of the radiating portion 322.
Further, a first filling member 41 for fixing the feeding radiator 32 is disposed in the accommodating cavity 311.
As can be seen from the above description, the first filling member is used for fixing the radiating portion, which is beneficial to improving the stability of the antenna unit structure.
Further, the material of the first filling member 41 is modified PC or LCP.
From the above description, it is clear that the use of a low loss material for the first filler is advantageous for ensuring the performance of the antenna element.
Further, a second filling member 42 for fixing the feeding portion 321 is disposed in the accommodating hole 312.
As can be seen from the above description, the second filling member is used for fixing the feeding portion, which is beneficial to further improving the stability of the antenna unit structure. In addition, the first and second filler may be a one-piece structure, and is not limited to two separate units.
Further, the feeding portion 321 is disposed perpendicular to the radiating portion 322.
Further, the distance between two adjacent antenna units for 5G mobile communication is equal to half a wavelength of the working frequency band of the antenna unit for 5G mobile communication.
Further, in the array antenna 1, the spacing between two adjacent antenna units for 5G mobile communication is equal to 5.35mm.
As can be seen from the above description, the 5.35mm is a half wavelength corresponding to the 28GHz frequency, and the antenna unit for 5G mobile communication covers the 28GHz band (5G antenna operating band).
Further, the number of the antenna units for 5G mobile communication is eight.
As can be seen from the above description, the antenna units for 5G mobile communication are arranged in an array of 8x1 on the metal frame.
Further, the power feeding line 23 has a stepped shape.
From the above description, the stepped feed line facilitates manufacturer tuning of the matching of the antenna elements.
The antenna unit for 5G mobile communication comprises a feed unit 2 and a radiation unit 3, wherein the feed unit 2 comprises a PCB dielectric layer 21, a stratum 22 and a feed line 23, the feed line 23 is arranged on the bottom surface of the PCB dielectric layer 21, and the stratum 22 is arranged on the top surface of the PCB dielectric layer 21; the radiation unit 3 comprises a dielectric member 33 and a feed radiation member 32, the dielectric member 33 is arranged on one side of the stratum 22 far away from the PCB dielectric layer 21, a metal ring 34 is arranged on the top surface of the dielectric member 33, a plurality of through holes 331 are arranged on the dielectric member 33, the metal ring 34 is electrically connected with the stratum 22 through the through holes 331, and a plurality of through holes 331 are connected into a circle along the metal ring 34 so as to form a containing cavity 311 together with the stratum 22 on the dielectric member 33; the feeding radiator 32 is in a nail shape and is located in the accommodating cavity 311, the feeding radiator 32 includes a feeding portion 321 formed by a via hole and a plate-shaped radiating portion 322, one end of the feeding portion 321 is connected with the radiating portion 322, the other end of the feeding portion 321 is electrically connected with the feeding line 23, the radiating portion 322 is located on the top surface of the dielectric member 33 and is located in the accommodating cavity 311, and a first side 3221 of the radiating portion 322 is electrically connected with the metal ring 34.
As is apparent from the above description, the antenna unit for 5G mobile communication is a modification of the antenna unit for 5G mobile communication, the antenna unit for 5G mobile communication is disposed on the metal frame of the array antenna, and the antenna unit for 5G mobile communication is disposed on the control board of the communication device of the array antenna.
Further, the connection between the feeding portion 321 and the radiating portion 322 is disposed near the second side 3222 of the radiating portion 322, and the first side 3221 of the radiating portion 322 and the second side 3222 of the radiating portion 322 are a set of opposite sides of the radiating portion 322.
Example 1
Referring to fig. 1 to 10, a first embodiment of the present invention is as follows: as shown in fig. 1 to 3, an array antenna 1 is disposed on a metal frame 100 of a communication device, and includes N antenna units for 5G mobile communication, where the antenna units for 5G mobile communication are arranged in an Nx1 array on the metal frame 100; n is an integer greater than 2, and the metal member 31 is the metal frame 100.
In this embodiment, the metal frame 100 is a three-section frame, and specifically includes: the left frame 101, the right frame 102, the upper frame 103, the lower frame 104 and the metal middle plate 105, wherein the left frame 101 and the right frame 102 are connected together through the metal middle plate 105, the upper frame 103 and the lower frame 104 are respectively arranged with the metal middle plate 105 in a clearance, the size of the clearance is 0.5-2mm, and the preferable size of the clearance is 1mm; the number of the antenna units for 5G mobile communication is eight; the antenna units for 5G mobile communication are arranged in an array of 8x1 on the right frame 102.
And the distance between two adjacent antenna units for 5G mobile communication is equal to half wavelength of the working frequency band of the antenna units for 5G mobile communication.
In order to enable the array antenna 1 to cover a 28GHz frequency band (27.5-28.35 GHz frequency band), the distance between two adjacent antenna units for 5G mobile communication is equal to 5.35mm.
The antenna unit for 5G mobile communication comprises a feed unit 2 and a radiation unit 3, wherein the feed unit 2 comprises a PCB dielectric layer 21, a stratum 22 and a feed line 23, the feed line 23 is arranged on the top surface of the PCB dielectric layer, and the stratum 22 is arranged on the bottom surface of the PCB dielectric layer 21; the radiating unit 3 comprises a metal piece 31 and a feed radiating piece 32, wherein a containing cavity 311 is arranged on one side of the metal piece 31 far away from the PCB dielectric layer 21, and a containing hole 312 is arranged on one side of the containing cavity 311 near the PCB dielectric layer 21; the feeding radiation member 32 is in a nail shape, the feeding radiation member 32 comprises a columnar feeding portion 321 and a plate-shaped radiation portion 322, one end of the feeding portion 321 is connected with the radiation portion 322, the other end of the feeding portion 321 penetrates through the accommodating hole 312 to be electrically connected with the feeding line 23, and the radiation portion 322 is located in the accommodating cavity 311; the metal members 31 are electrically connected to the ground layer 22 and the radiating portions 322, respectively.
In the array antenna 1, the metal member 31 in the antenna unit for 5G mobile communication is the metal frame 100. Preferably, the feeder 23 is stepped, i.e. the feeder 23 is a multi-section feeder 23, which has the advantage of facilitating the manufacturer to make antenna matches. The power feeding portion 321 is not in contact with the inner peripheral wall of the accommodation hole 312.
In this embodiment, the cross section of the accommodating cavity 311 is rectangular, the cross section of the accommodating hole 312 is circular, and in other embodiments, the cross section of the accommodating cavity 311 may be circular, triangular, P-sided (P is an integer greater than 4), or other shapes. Similarly, the shape of the cross section of the receiving hole 312 should not be limited.
The connection point of the radiating portion 322 and the feeding portion 321 is disposed near the top surface of the radiating portion 322, that is, the connection point of the radiating portion 322 and the feeding portion 321 is offset from the center of the radiating portion 322 and disposed near the upper portion of the radiating portion 322 (the lower portion of the radiating portion 322 is in direct contact with the metal piece 31 to realize electrical connection). Preferably, the feeding portion 321 is disposed perpendicular to the radiating portion 322.
In order to improve the stability of the structure of the antenna unit for 5G mobile communication, the first filling member 41 for fixing the feeding radiation member 32 is disposed in the accommodating cavity 311, and the second filling member 42 for fixing the feeding portion 321 is disposed in the accommodating hole 312. The material of the first filling member 41 is a modified low-loss material such as PC (modified PC) or LCP (modified LCP); alternatively, the first filler 41 is made of a PC composite material or an LCP composite material; in the present embodiment, the dielectric constant ε of the first filling member 41 r 3, and the loss tangent tan. Delta. Was 0.002. Similarly, the second filler 42 may alternatively be made of the materials described above.
In the present embodiment, the inventors performed performance simulation for the antenna unit and array antenna 1 for 5G mobile communication, wherein,
the middle dielectric layer of the PCB dielectric layer 21 adopts ROGES RO4350B, and the thickness of the middle dielectric layer is 0.25mm;
the dimensions of the metal piece 31 are as follows: 5.35mm long, 2.5mm wide and 7mm high;
the dimensions of the receiving cavity 311 are as follows: 3mm long, 1.5mm wide and 3.3mm high;
the dimensions of the radiating portion 322 are as follows: 2.2mm long, 0.5mm wide and 1.2mm high;
the space between two adjacent antenna units for 5G mobile communication is equal to 5.35mm;
fig. 4 shows the return loss of the antenna unit for 5G mobile communication, which can be seen to cover the 28GHz (27.5 GHz-28.35 GHz) operating band well;
fig. 5 shows radiation patterns with frequencies of 27.5GHz, 28GHz and 28.35GHz when phi=0 degree (i.e. XOZ plane) and phi=90 degree (i.e. YOZ plane), respectively, where it can be seen that the gain of the antenna unit for 5G mobile communication in the +z direction is close to 5dBi at different frequencies, and the radiation patterns have better consistency in both planes.
Fig. 6 shows the S-parameters of an array antenna on a metal frame, where the return loss is close to that of a single antenna element for 5G mobile communication, the isolation between the return loss and the adjacent array element is highest but less than-15 dB, and then the isolation between the return loss and the adjacent array element gradually decreases with the distance between the return loss and the adjacent array element.
Fig. 7 is a scan of an array antenna on a metal bezel along Theta in the XOZ plane at 28 GHz. As can be seen from the figure, the gain of the array antenna in the +z direction increases from approximately 5dBi to about 13.5dBi compared to a single antenna element for 5G mobile communication. In addition, it can be seen from the figure that the back lobe of the array antenna does not increase too much when scanning within 0 to 60 degrees, so that a large interference signal is not received, and the antenna gain is normally gradually reduced from 13.5dBi to about 11.5dBi along with the increase of the scanning angle. In addition, the scanning patterns of other frequency points of the antenna in the working frequency band are similar to those of the antenna at 28GHz, so that the list is not repeated. As can be seen from the scan diagram of fig. 7, as the scan angle increases, the side lobe increases, and the space between two adjacent antenna units for 5G mobile communication in this embodiment is a half wavelength of 28GHz, so that the side lobe is relatively low even when the scan angle increases to 60 degrees. It is easy to understand that the antenna unit and the array for 5G mobile communication can be extended to other 5G millimeter wave operating frequency bands, and further, the antenna unit for 5G mobile communication can be applied to other millimeter wave frequency bands, that is, the antenna unit is named as an antenna unit for 5G mobile communication, but the application of the antenna unit should not be limited to 5G.
Fig. 8, 9 and 10 are three-dimensional scan patterns of the array antenna on the metal frame, and scan angles are 0 degrees, 30 degrees and 60 degrees, respectively. It is clear from the figure that the side lobes and the back lobes of the antenna pattern are relatively small at the three scan angles.
The antenna unit for 5G mobile communications in this embodiment is small in size and simple to manufacture, covers the 28GHz band (27.5-28.35 GHz band), and can provide a millimeter wave antenna array system for future 5G communications for mobile terminal devices (such as a mobile phone, a wearable device, a PAD, etc.).
The array antenna of the present embodiment can be used for assembling the feed radiator 32 and the antenna radiation at the same time by only grooving one side surface of the metal frame 100, so that the processing steps are less and simpler. And since the antenna element size for 5G mobile communication is smaller than the wavelength, the element pitch of the array antenna can be set to half wavelength, so that the back lobe is relatively lower when scanning a large angle.
Example two
Referring to fig. 11, a second embodiment of the present invention is another antenna unit structure for 5G mobile communication, and the antenna unit for 5G mobile communication is a modification of the antenna unit for 5G mobile communication in the first embodiment, and is different from the antenna unit for 5G mobile communication in the first embodiment in that: the antenna unit for 5G mobile communication of the first embodiment is disposed on the metal frame of the communication device, and the antenna unit for 5G mobile communication of the present embodiment is disposed on the control board of the communication device. Specifically, the present invention relates to a method for manufacturing a semiconductor device. The antenna unit for 5G mobile communication comprises a feed unit 2 and a radiation unit 3, wherein the feed unit 2 comprises a PCB dielectric layer 21, a stratum 22 and a feed line 23, the feed line 23 is arranged on the bottom surface of the PCB dielectric layer 21, and the stratum 22 is arranged on the top surface of the PCB dielectric layer 21; the radiation unit 3 comprises a dielectric member 33 and a feed radiation member 32, the dielectric member 33 is arranged on one side of the stratum 22 far away from the PCB dielectric layer 21, a metal ring 34 is arranged on the top surface of the dielectric member 33, a plurality of through holes 331 are arranged on the dielectric member 33, the metal ring 34 is electrically connected with the stratum 22 through the through holes 331, and a plurality of through holes 331 are connected into a circle along the metal ring 34 so as to form a containing cavity 311 together with the stratum 22 on the dielectric member 33;
the feeding radiation member 32 is in a nail shape and is located in the accommodating cavity 311, the feeding radiation member 32 includes a feeding portion 321 formed by a via hole and a plate-shaped radiation portion 322, one end of the feeding portion 321 is connected with the radiation portion 322, the other end of the feeding portion 321 is electrically connected with the feeding line 23, the radiation portion 322 is disposed on the top surface of the dielectric member 33 and is located in the accommodating cavity 311, a first side 3221 of the radiation portion 322 is electrically connected with the metal ring 34, a connection portion between the radiation portion 322 and the feeding portion 321 is disposed near a second side 3222 of the radiation portion 322, and the first side 3221 of the radiation portion 322 and the second side 3222 of the radiation portion 322 are a set of opposite sides of the radiation portion 322.
In this embodiment, the via 331 is a metallized hole to electrically connect the metal ring 34 to the ground layer 22; in other embodiments, a metal filler may be disposed in the via 331, and two ends of the metal filler are electrically connected to the metal ring 34 and the ground layer 22, respectively.
Further, the power feeding line 23 has a stepped shape.
Preferably, the feeding portion 321 is disposed perpendicular to the radiating portion 322
In summary, according to the antenna unit and the array antenna for 5G mobile communication provided by the invention, the assembly of the feed radiation piece and the antenna radiation can be realized only by arranging the accommodating cavity on one side surface of the metal frame, compared with the prior art, the antenna unit and the array antenna for 5G mobile communication have the advantages that the structure is simpler, the processing steps are fewer, the production efficiency is improved, and the manufacturing cost of mobile terminal equipment is reduced; the 5G millimeter wave antenna unit for mobile communication occupies small side surface area of the metal frame, and has small influence on the structural strength of the metal frame; the width of the 5G millimeter wave antenna unit for mobile communication in the array arrangement direction is half wavelength, which is beneficial to improving the isolation between units and scanning at a large angle and obtaining a low back lobe.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (11)
1. An antenna unit for 5G mobile communication, including feed unit and radiating element, its characterized in that: the feed unit comprises a PCB dielectric layer, a stratum and a feed line, wherein the feed line is arranged on the top surface of the PCB dielectric layer, and the stratum is arranged on the bottom surface of the PCB dielectric layer; the radiating unit comprises a metal piece and a feed radiating piece, wherein a containing cavity is formed in one side, away from the PCB dielectric layer, of the metal piece, and a containing hole is formed in one side, close to the PCB dielectric layer, of the containing cavity; the feeding radiation piece is nail-shaped, the feeding radiation piece comprises a columnar feeding part and a platy radiation part, one end of the feeding part is connected with the radiation part, the other end of the feeding part penetrates through the containing hole to be electrically connected with the feeder line, and the radiation part is positioned in the containing cavity; the metal piece is electrically connected with the stratum and the radiation part respectively.
2. The antenna unit for 5G mobile communication according to claim 1, wherein: the connection point of the radiation part and the feed part is arranged close to the top surface of the radiation part.
3. The antenna unit for 5G mobile communication according to claim 1, wherein: and a first filling piece for fixing the feed radiation piece is arranged in the accommodating cavity.
4. An antenna unit for 5G mobile communication according to claim 3, characterized in that: the material of the first filling piece is modified PC or LCP.
5. The antenna unit for 5G mobile communication according to claim 1, wherein: and a second filling piece for fixing the feeding part is arranged in the accommodating hole.
6. The antenna unit for 5G mobile communication according to claim 1, wherein: the feeder is stepped.
7. Array antenna locates on the metal frame, its characterized in that: the antenna unit for 5G mobile communication according to any one of claims 1-5, wherein the number of the antenna units for 5G mobile communication is N, and the antenna units for 5G mobile communication are arranged in an array of Nx1 on the metal frame; n is an integer greater than 2, and the metal piece is the metal frame.
8. The array antenna of claim 7, wherein: and the distance between two adjacent antenna units for 5G mobile communication is equal to half wavelength of the working frequency band of the antenna units for 5G mobile communication.
9. An antenna unit for 5G mobile communication, including feed unit and radiating element, its characterized in that: the feed unit comprises a PCB dielectric layer, a stratum and a feed line, wherein the feed line is arranged on the bottom surface of the PCB dielectric layer, and the stratum is arranged on the top surface of the PCB dielectric layer; the radiating unit comprises a dielectric piece and a feed radiating piece, wherein the dielectric piece is arranged on one side of the stratum, which is far away from the dielectric layer of the PCB, the top surface of the dielectric piece is provided with a metal ring, the dielectric piece is provided with a plurality of through holes, the metal ring is electrically connected with the stratum through the through holes, and the plurality of through holes are connected into a circle along the metal ring so as to form a containing cavity together with the stratum on the dielectric piece; the feed radiation piece is nail-shaped and is located in the accommodating cavity, the feed radiation piece comprises a feed portion formed by a via hole and a plate-shaped radiation portion, one end of the feed portion is connected with the radiation portion, the other end of the feed portion is electrically connected with the feed line, the radiation portion is arranged on the top surface of the dielectric piece and is located in the accommodating cavity, and the first side edge of the radiation portion is electrically connected with the metal ring.
10. The antenna unit for 5G mobile communication according to claim 9, wherein: the junction of feed portion and radiation portion is close to the second side setting of radiation portion, and the first side of radiation portion and the second side of radiation portion are a set of opposite sides of radiation portion.
11. The antenna unit for 5G mobile communication according to claim 9, wherein: the feeder is stepped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810449630.5A CN108417995B (en) | 2018-05-11 | 2018-05-11 | Antenna unit and array antenna for 5G mobile communication |
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| CN201810449630.5A CN108417995B (en) | 2018-05-11 | 2018-05-11 | Antenna unit and array antenna for 5G mobile communication |
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| CN108417995A CN108417995A (en) | 2018-08-17 |
| CN108417995B true CN108417995B (en) | 2023-09-12 |
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| CN109066079B (en) * | 2018-08-21 | 2023-10-13 | 深圳市信维通信股份有限公司 | Millimeter wave dual-polarized slot antenna system suitable for 5G communication and mobile terminal |
| CN109301507A (en) * | 2018-09-05 | 2019-02-01 | 深圳市信维通信股份有限公司 | Millimeter wave antenna system and mobile terminal based on LCP material |
| CN109216942B (en) * | 2018-09-11 | 2023-12-19 | 深圳市信维通信股份有限公司 | 5G millimeter wave mobile terminal antenna system based on metal frame |
| CN109273865B (en) * | 2018-09-11 | 2020-08-04 | 珠海格力电器股份有限公司 | Antenna system of terminal equipment and terminal equipment |
| CN109066055B (en) | 2018-09-28 | 2020-10-20 | 维沃移动通信有限公司 | Terminal equipment |
| CN109728405B (en) | 2018-12-28 | 2022-03-01 | 维沃移动通信有限公司 | Antenna structure and high-frequency wireless communication terminal |
| CN109728447B (en) * | 2018-12-28 | 2023-01-13 | 维沃移动通信有限公司 | Antenna structure and high-frequency multi-band wireless communication terminal |
| CN110233328A (en) * | 2019-05-29 | 2019-09-13 | 维沃移动通信有限公司 | Mobile terminal |
| CN112445125A (en) * | 2019-09-03 | 2021-03-05 | RealMe重庆移动通信有限公司 | Wearable electronic equipment |
| CN110911812A (en) * | 2019-11-15 | 2020-03-24 | 深圳市信维通信股份有限公司 | Dual-polarization 5G millimeter wave antenna unit and array thereof |
| CN111763450A (en) * | 2020-05-21 | 2020-10-13 | 深圳市信维微电子有限公司 | Slurry for 5G dielectric waveguide filter and preparation method thereof |
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