CN112510356A - 5G millimeter wave broadband antenna and terminal - Google Patents
5G millimeter wave broadband antenna and terminal Download PDFInfo
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- CN112510356A CN112510356A CN202011324978.5A CN202011324978A CN112510356A CN 112510356 A CN112510356 A CN 112510356A CN 202011324978 A CN202011324978 A CN 202011324978A CN 112510356 A CN112510356 A CN 112510356A
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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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- 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
- H01Q21/00—Antenna arrays or systems
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Abstract
The invention discloses a 5G millimeter wave broadband antenna and a terminal, wherein the 5G millimeter wave broadband antenna comprises: a dielectric substrate; the first antenna unit is arranged on the medium substrate and works in a first frequency band; the second antenna unit is arranged on the dielectric substrate and works in a second frequency band; and the third antenna unit is arranged on the dielectric substrate and works in a third frequency band, and the second antenna unit power supply and the third antenna unit are respectively matched with the first antenna unit in impedance. According to the invention, the first antenna unit, the second antenna unit and the third antenna unit are arranged on the dielectric substrate, so that the first antenna unit, the second antenna unit and the third antenna unit respectively work in three different frequency bands, further the respective control of the three different frequency bands is realized, the full-frequency-band control of 5G signals is realized, the universality of the antenna is improved, and the design cost of the 5G millimeter wave broadband antenna is reduced.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a 5G millimeter wave broadband antenna and a terminal.
Background
The 5G millimeter wave technology has received much attention since 2017. WRC-15 and above mainly faces the frequency band below 6GHz, and WRC-19 starts to face the frequency band above 6 GHz. Referring to global research and planning of high frequency bands, 26GHz band planning was completed in 2018 in the european union, 28GHz (27.5-28.35GHz), 37GHz (37-38.6GHz), and 39GHz (38.6-40GHz) bands were completed in the united states, and 28GHz and 39GHz planning was completed in japan and korea. China plans 26GHz and 37GHz bands. Namely 26GHz to 39GHz, is the worldwide dominant millimeter wave band. The 3GPP protocol 38.101-2Table 5.2-1 defines 3 bands of frequencies for the 5G NR FR2 band, which are: n257(26.5 GHz-29.5 GHz), n258(24.25 GHz-27.5 GHz) and n260(37 GHz-40 GHz) all use the TDD system.
From the patent that discloses at present, adopt single frequency or dual-frenquency, or single frequency dual polarization design, the design is complicated.
Disclosure of Invention
The invention mainly aims to provide a practical 5G millimeter wave broadband antenna and a terminal provided with the same.
In order to achieve the above object, the present invention provides a 5G millimeter wave broadband antenna, including:
a dielectric substrate;
the first antenna unit is arranged on the medium substrate and works in a first frequency band;
the second antenna unit is arranged on the dielectric substrate and works in a second frequency band; and
and the third antenna unit is arranged on the dielectric substrate and works in a third frequency band, and the second antenna unit power supply and the third antenna unit are respectively matched with the first antenna unit in impedance.
Optionally, the dielectric substrate includes a clearance area, and the first antenna unit, the second antenna unit, and the third antenna unit are respectively disposed in the clearance area.
Optionally, the third antenna unit is disposed on a side of the first antenna unit facing away from the second antenna unit;
and/or the volume of the clearance area is V1, and the volume of the medium substrate is V, wherein,
optionally, when the third antenna unit is disposed on a side of the first antenna unit facing away from the second antenna unit, a distance between the second antenna unit and the first antenna unit is g1, and a distance between the third antenna unit and the first antenna unit is g2, where g1 is g 2.
Optionally, the length of the projected overlap of the second antenna element and the first antenna element is 5g1, and/or the length of the projected overlap of the third antenna element and the first antenna element is 1/2g 1.
Optionally, the first antenna unit is of a rectangular structure, the second antenna unit is of a C-shaped structure, and the third antenna unit is of a full-surrounding structure.
Optionally, the second antenna unit includes a first segment, a second segment, and a third segment connected in sequence, where the first segment has a length of L and a width of 1/3L; the second segment has a length of 1/3L and a width of 1/3L; the third section has a length of 1/2L and a width of 1/3L;
the first antenna element has a length of 1.3L and a width of 1/3L;
the outer peripheral edge of the third antenna element has a length of 1.3L and a width of L, and the inner peripheral edge of the third antenna element has a length of 2/3L and a width of 1/3L.
Optionally, the first antenna element is connected to a signal circuit of the dielectric substrate, and the first antenna element is coupled to feed the second antenna element and the third antenna element.
The present invention also provides a terminal, including:
a main body; and
the antenna module, the antenna module includes as above 5G millimeter wave broadband antenna, the antenna module is located on the main part.
Optionally, the antenna module includes a plurality of the 5G millimeter wave broadband antennas, and the plurality of the 5G millimeter wave broadband antennas are arranged at intervals.
According to the technical scheme, the first antenna unit, the second antenna unit and the third antenna unit are arranged on the dielectric substrate, so that the first antenna unit, the second antenna unit and the third antenna unit respectively work in three different frequency bands, the three different frequency bands are respectively controlled, the full-frequency-band control of 5G signals is realized, the universality of the antenna is improved, the design verification process is simplified, and the design cost of the 5G millimeter wave broadband antenna is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a 5G millimeter wave broadband antenna according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a three-dimensional structure of each antenna unit according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of stacked distribution positions of antenna units according to the present invention;
FIG. 4 is a schematic structural diagram of a 5G millimeter wave broadband antenna according to an embodiment of the present invention in a top view;
fig. 5 is a schematic structural diagram of a first antenna unit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second antenna unit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a third antenna unit according to an embodiment of the present invention;
FIG. 8 is a view of the angle of the radiation direction scan of the 5G millimeter wave broadband antenna according to the present invention;
FIG. 9 shows the standing-wave ratio of the 5G millimeter wave broadband antenna unit according to the present invention;
FIG. 10 is a block diagram of a terminal according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of an embodiment of a distribution mode of the antenna modules on the terminal according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
200 | |
| 20 | |
21 | |
| 22 | |
23 | |
| 24 | |
241 | |
| 242 | |
243 | |
| 25 | Third antenna unit |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a 5G millimeter wave broadband antenna which can be used for a mobile terminal, wherein the 5G millimeter wave broadband antenna is used for simultaneously controlling three frequency bands of n257(26.5 GHz-29.5 GHz), n258(24.25 GHz-27.5 GHz) and n260(37 GHz-40 GHz) so as to realize full-frequency-band control.
Referring to fig. 1 and fig. 2, in an embodiment, the 5G millimeter wave broadband antenna includes: a dielectric substrate 20; the first antenna unit 23 is arranged on the dielectric substrate 20 and works in a first frequency band; the second antenna unit 24 is arranged on the dielectric substrate 20 and works in a second frequency band; and a third antenna unit 25 disposed on the dielectric substrate 20 and operating in a third frequency band, wherein the power of the second antenna unit 24 and the impedance of the third antenna unit 25 are matched with the impedance of the first antenna unit 23.
The dielectric substrate 20, which is used as a carrier of the 5G millimeter wave broadband antenna, may be a circuit board, such as a motherboard of a wearable device, a motherboard of a VR device, a motherboard of an AR device, or an mlb (multi layer board) for short, and is composed of multiple dielectric layers and copper layers. In this embodiment, FR4 and its modified high-frequency loss board, or epoxy board, or PI material and modified performance medium with low cost can be selected.
In this embodiment, optionally, a signal circuit 21 is disposed on the dielectric substrate 20, and the signal circuit 21 is used for being connected to the first antenna unit 23 and/or the second antenna unit 24 and/or the third antenna unit 25. The signal circuit 21 may be a feeder impedance adjustment, a phase shifter processing unit or a MIMO beam steering. In this embodiment, the first antenna element 23 is connected to the signal circuit 21, the first antenna element 23 couples and feeds the second antenna element 24 and the third antenna element 25, and the first antenna element 23, the second antenna element 24, and the third antenna element 25 are impedance-matched with each other.
The first antenna unit 23 operates in a first frequency band, which may be 20GHz to 28GHz lower than 30 GHz. The second antenna unit 24 operates in a second frequency band, which may be 37 GHz-40 GHz. The third antenna unit 25 operates in a third frequency band, which may be 20GHz to 28GHz lower than 30 GHz.
According to the invention, the first antenna unit 23, the second antenna unit 24 and the third antenna unit 25 are simultaneously arranged on the dielectric substrate 20, so that the three antenna units are matched, and the impedances of the three antenna units are mutually adapted, thereby realizing the full coverage of three frequency bands of n257(26.5 GHz-29.5 GHz), n258(24.25 GHz-27.5 GHz) and n260(37 GHz-40 GHz), further not needing to support redesign and optimize the antenna aiming at millimeter waves of different applicable areas, being beneficial to saving the verification period of product design and improving the universality of antenna products. Because three antenna unit integration realizes three frequency channels simultaneous working on a dielectric substrate 20, effectively reduces the whole volume of antenna. Compared with the existing frequency or double-frequency or single-frequency dual-polarization design scheme, the method has lower design cost.
In this embodiment, optionally, the dielectric substrate 20 includes a clearance area 22, and the first antenna unit 23, the second antenna unit 24, and the third antenna unit 25 are respectively disposed in the clearance area 22, so that the first antenna unit 23, the second antenna unit 24, and the third antenna unit 25 are far away from other metal objects that may cause interference, so as to implement metal shielding of the three antenna units, so as to eliminate signal interference.
Referring to fig. 2, in an embodiment, the third antenna unit 25 is disposed on a side of the first antenna unit 23 opposite to the second antenna unit 24, and the second antenna unit 24 and the third antenna unit 25 are respectively disposed on two sides of the first antenna unit 23, so that the three antenna units form a stacked arrangement, and then product motherboards can be directly stacked, and a hard board or a soft and hard board can be combined without specially designing a millimeter wave antenna material, thereby effectively reducing the processing cost of the 5G millimeter wave broadband antenna. By arranging the three antenna units on the dielectric substrate 20 in a laminated manner, impedance adjustment among the three antenna units is more convenient, and the space of the dielectric substrate 20 can be fully utilized while impedance adaptation is realized, so that the three antenna units are completely positioned in the dielectric substrate 20. The dielectric substrate 20 may adopt FR4 dielectric with low cost, dielectric constant 4.4, and loss angle 0.02, which further reduces the cost of the product, and when being used in the terminal 100, the occupied space is smaller, and especially when being used in the terminal 100 such as wearable device, VR device, and AR device, the space requirement for the antenna is lower.
Referring to fig. 2 and fig. 3, in an embodiment, a distance between the second antenna element 24 and the first antenna element 23 is g1, and a distance between the third antenna element 25 and the first antenna element 23 is g2, where g1 is g 2.
The distance between the second antenna element 24 and the first antenna element 23 and the distance between the third antenna element 25 and the first antenna element 23 are distances in the stacking direction of the three antenna elements in the stacked state. Because first antenna element 23, second antenna element 24 and third antenna element 25 are the range upon range of setting, all set up to G1 through the distance between first antenna element 23 and second antenna element 24, the third antenna element 25, can reduce the space that three antenna element occupy, reduce the thickness of 5G millimeter wave broadband antenna product. Through adopting above-mentioned structural design, can conveniently design the adjustment to make the impedance between the three antenna element tend to the optimal value, and then can promote the performance of 5G millimeter wave broadband antenna product.
In this embodiment, the value of G may be determined according to the specific product design and processing precision of the 5G millimeter wave broadband antenna product, where the value of G may be 0.05mm or more and 0.2mm or less according to the product requirements. In this embodiment, optionally, let G be 0.1mm, and take G as a reference size, so as to facilitate processing and enable the precision of a 5G millimeter wave broadband antenna product to be maintained in a better range on the premise that the impedance between the three antenna units tends to an optimal value.
Further optionally, the length of the projected overlap of the second antenna element 24 and the first antenna element 23 is 5g1, and/or the length of the projected overlap of the third antenna element 25 and the first antenna element 23 is 1/2g 1.
Since the three antenna units are stacked, the overlapping projection of the second antenna unit 24, the third antenna unit 25 and the first antenna unit 23 means the overlapping projection of the second antenna unit 24 and the third antenna unit 25 on a plane perpendicular to the stacking direction of the three antenna units. By defining the length of the projection overlap of the second antenna element 24 and the first antenna element 23 as 5g1 and the length of the projection overlap of the third antenna element 25 and the first antenna element 23 as 1/2g1, the length of the corresponding projection overlap can be determined according to the distance between the three antenna elements, and the impedance between the three antenna elements tends to an optimal value. Because the distance between the three antenna units and the length of the projection overlap of the three antenna units can be determined according to the precision of the 5G millimeter wave broadband antenna product, the processing precision and the processing efficiency of the 5G millimeter wave broadband antenna product can be effectively improved, the universality of the 5G millimeter wave broadband antenna product is improved, and the design cost of the 5G millimeter wave broadband antenna product is reduced.
In one embodiment, the clearance area 22 has a volume V1, and the dielectric substrate 20 has a volume V, wherein,
the region of the clearance area 22 is the antenna region of the 5G millimeter wave broadband antenna product. In this embodiment, the dielectric substrate 20 uses FR4 dielectric, the dielectric constant is 4.4, and the loss angle is 0.02, and by defining the ratio of the volume of the clearance area 22 to the overall volume of the dielectric substrate 20, the processing accuracy of a 5G millimeter wave broadband antenna product can be improved, the design verification process is simplified, and the impedance configuration between three antenna elements can be brought close to the optimal range.
In this embodiment, optionally, the clearance area 22 is 2.6mm long, 1mm wide, and 1mm high, in this volume range, the distance between the second antenna unit 24 and the first antenna unit 23 is 0.1mm, the distance between the third antenna unit 25 and the first antenna unit 23 is 0.1mm, and the length of the overlapping projection of the second antenna unit 24 and the first antenna unit 23 is 0.5mm, and/or the length of the overlapping projection of the third antenna unit 25 and the first antenna unit 23 is 0.05mm, so that the impedances of the three antenna units can be in an optimal range, and the design size is controllable, the three antenna units can operate in three preset frequency bands, and a good antenna function is achieved.
Referring to fig. 4, in an embodiment, the first antenna unit 23 is a rectangular structure, the second antenna unit 24 is a C-shaped structure, and the third antenna unit 25 is a fully enclosed structure. Because the shape of the antenna determines the characteristics of the radiation current, in this embodiment, the performance of the 5G millimeter wave broadband antenna product can be effectively improved by adopting the C-shaped second antenna unit 24 and the third antenna unit 25 in the full-surrounding structure.
By adopting the three antenna units in the structural form, and matching with the aforementioned stacking arrangement, the distances between the first antenna unit 23 and the second antenna unit 24 and the third antenna unit 25 and the projection overlapping length can simplify the design process of the 5G millimeter wave broadband antenna, and do not need to adopt more complicated coupling interconnection, thereby effectively reducing the design cost of the antenna.
Referring to fig. 5, fig. 6 and fig. 7, further alternatively, the second antenna element 24 includes a first segment 241, a second segment 242 and a third segment 243 which are connected in sequence, where the first segment 241 has a length L and a width 1/3L; the second segment 242 has a length of 1/3L and a width of 1/3L; the third section 243 has a length of 1/2L and a width of 1/3L; the first antenna element 23 has a length of 1.3L and a width of 1/3L; the outer peripheral edge of the third antenna element 25 has a length of 1.3L and a width of L, and the inner peripheral edge of the third antenna element 25 has a length of 2/3L and a width of 1/3L.
The first segment 241, the second segment 242 and the third segment 243 of the second antenna element 24 are connected in sequence to form a C-shaped structure. One end of the first antenna element 23 is connected to the signal circuit 21, and the other end of the first antenna element 23 and the third antenna element 25 are stacked on the first segment 241 and the second segment 242 of the second antenna element 24.
In this embodiment, the length of L may be designed according to the overall volume of the 5G millimeter wave broadband antennaTo be determined. When the clearance area 22 is 2.6mm long, 1mm wide and 1mm high, V is 2.6mm3Then, L is selected to be 1mm, and the selectable sizes of the first antenna element 23, the second antenna element 24, and the third antenna element 25 are obtained. By adopting the size design, the design process of the 5G millimeter wave broadband antenna can be simplified, and the distances between the first antenna unit 23 and the second antenna unit 24 and the third antenna unit 25 and the projection overlapping length are conveniently matched, so that the impedances of the three antenna units are in the range of 20 GHz-40 GHz, and the optimal range is reached.
Referring to fig. 8, in the present embodiment, the clearance area 22 is selected to be 2.6mm long, 1mm wide, 1mm high, and V is 2.6mm3G is 0.1mm, L is 1mm, the maximum gain of the antenna varies with angle during beam scanning by phase control, curve B1 is the same phase case, the main lobe is at Theta 0 degree position, curve B2 is the positive 45 degree phase difference case, the main lobe is at Theta 20 degree position, curve B3 is the negative 45 degree phase difference case, the main lobe is at Theta-20 degree position.
Referring to fig. 9, in the present embodiment, a scanning angle diagram of the radiation direction of the 5G millimeter wave broadband antenna is obtained, wherein 20GHz to 28GHz lower than 30GHz are mainly controlled by the first antenna unit 23, as shown by a dotted line a1, 37GHz to 40GHz are mainly controlled by the second antenna unit 24, as shown by a dotted line a2, 28GHz to 37GHz lower than 37GHz are mainly controlled by the third antenna unit 25, as shown by a dotted line A3, the standing-wave ratio is divided into 3 segments as described above, and the standing-wave ratio is in a W shape in each segment, which indicates that the impedance is optimal at 20GHz to 40 GHz. The shape of the standing-wave ratio W can be approximately presented, the working frequency band is 20GHz to 40GHz, the standing-wave ratio of the W shape is less than 2 in the whole design frequency band, and the application of 5G millimeter wave frequency band which is popular internationally at present is met. The standing wave ratio of the antenna unit of the embodiment is formed by 3W shapes, and for the coupling between the 3 antenna units and other units, the wave trough of W also rises along with the rise of frequency.
The present invention also provides an embodiment of the terminal 100.
Referring to fig. 10, the terminal 100 includes: a main body; and an antenna module 200, wherein the antenna module 200 includes the 5G millimeter wave broadband antenna according to any of the embodiments, and the antenna module 200 is disposed on the main body.
The terminal 100 may be a wearable device, a VR device, an AR device, an intelligent home device, or the like. Taking the terminal 100 as a wearable device as an example, in this embodiment, by using the above 5G millimeter wave broadband antenna, the antenna design of the terminal 100 can be simplified, and the cost of the terminal 100 is reduced. By adopting the three antenna units to respectively control three different frequency bands, the universality of the product is effectively improved, the antenna does not need to be redesigned according to the millimeter wave support of different use areas, and the design period of the product is effectively shortened.
Referring to fig. 11, in this embodiment, optionally, the antenna module 200 includes a plurality of the 5G millimeter wave broadband antennas, and the plurality of the 5G millimeter wave broadband antennas are arranged at intervals. The isolation between the millimeter wave antennas is more than 15mm by adjusting the distance between the 5G millimeter wave broadband antennas. Since the above-mentioned 5G millimeter wave broadband antenna design is adopted in this embodiment, the space requirement for the terminal 100 is small, and the antenna module 200 may be placed at any position on any side of the terminal 100. Optionally, the distance between the adjacent 5G millimeter wave broadband antennas may be 3mm, so as to facilitate installation of the 5G millimeter wave broadband antennas on the premise of maintaining the isolation between the adjacent 5G millimeter wave broadband antennas.
Claims (10)
1. A5G millimeter wave broadband antenna, comprising:
a dielectric substrate;
the first antenna unit is arranged on the medium substrate and works in a first frequency band;
the second antenna unit is arranged on the dielectric substrate and works in a second frequency band; and
and the third antenna unit is arranged on the dielectric substrate and works in a third frequency band, and the second antenna unit power supply and the third antenna unit are respectively matched with the first antenna unit in impedance.
2. The 5G millimeter-wave broadband antenna according to claim 1, wherein the dielectric substrate includes a clearance area, and the first antenna element, the second antenna element, and the third antenna element are respectively disposed in the clearance area.
3. The 5G millimeter wave broadband antenna according to claim 2, wherein the third antenna element is provided on a side of the first antenna element facing away from the second antenna element;
and/or the volume of the clearance area is V1, and the volume of the medium substrate is V, wherein,
4. the 5G millimeter wave broadband antenna according to claim 3, wherein when the third antenna element is disposed on a side of the first antenna element facing away from the second antenna element, a distance between the second antenna element and the first antenna element is G1, and a distance between the third antenna element and the first antenna element is G2, where G1 is G2.
5. The 5G millimeter wave broadband antenna according to claim 4, wherein the length of the projection overlap of the second antenna element and the first antenna element is 5G1, and/or the length of the projection overlap of the third antenna element and the first antenna element is 1/2G 1.
6. The 5G millimeter wave broadband antenna according to any one of claims 3 to 5, wherein the first antenna element has a rectangular structure, the second antenna element has a C-shaped structure, and the third antenna element has a full-enclosure structure.
7. The 5G millimeter wave broadband antenna according to claim 6, wherein the second antenna element comprises a first section, a second section and a third section which are connected in sequence, the first section has a length L and a width 1/3L; the second segment has a length of 1/3L and a width of 1/3L; the third section has a length of 1/2L and a width of 1/3L;
the first antenna element has a length of 1.3L and a width of 1/3L;
the outer peripheral edge of the third antenna element has a length of 1.3L and a width of L, and the inner peripheral edge of the third antenna element has a length of 2/3L and a width of 1/3L.
8. The 5G millimeter wave broadband antenna according to any one of claims 1 to 5, wherein the first antenna element is connected to a signal circuit of the dielectric substrate, and the first antenna element is coupled to feed the second antenna element and the third antenna element.
9. A terminal, comprising:
a main body; and
an antenna module comprising the 5G millimeter wave broadband antenna of any one of claims 1 to 8, the antenna module being disposed on the body.
10. The terminal of claim 9, wherein the antenna module comprises a plurality of the 5G millimeter wave broadband antennas, and the plurality of the 5G millimeter wave broadband antennas are arranged at intervals.
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