CN114865274A - Integrated dual-frequency dielectric resonator antenna module and electronic equipment - Google Patents

Abstract

The invention discloses an integrated dual-frequency dielectric resonator antenna module and electronic equipment, comprising a dielectric substrate and at least one antenna unit, wherein the antenna unit includes a dielectric resonator and a first connecting part, and the dielectric resonator includes a first dielectric resonator and a second dielectric resonator of different sizes, the first dielectric resonator and the second dielectric resonator are connected by the first connection part, the first dielectric resonator and the second dielectric resonator There is a space therebetween; the dielectric substrate is inserted into the space between the first dielectric resonator and the second dielectric resonator of each antenna unit, and abuts against the first dielectric resonator and the second dielectric resonator of each antenna unit ; The dielectric resonators in each antenna unit are connected in sequence and integrally formed. The invention can realize single dual frequency, and is convenient for the installation of the dielectric resonator.

Description

Integrated dual-band dielectric resonator antenna module and electronic equipment

technical field

The invention relates to the technical field of wireless communication, in particular to an integrated dual-frequency dielectric resonator antenna module and electronic equipment.

Background technique

According to 3GPP TS38.101-2 5G terminal radio frequency technical specification and TR38.817 terminal radio frequency technical report, 5G mmWave frequency bands include n257 (26.5-29.5GHz), n258 (24.25-27.25GHz), n260 (37-40GHz), n261 ( 27.5-28.35GHz) and the newly added n259 (39.5-43GHz). Obviously, in 5G millimeter-wave mobile terminal communication, multiple sets of antennas can be used to cover the above frequency bands, but it will definitely reduce the terminal space, so using a single antenna to achieve dual-frequency or even multi-frequency characteristics will simplify the structure of the integrated antenna and Design Flow.

Generally speaking, the multi-frequency microstrip patch antenna is the first choice of most designers because of its simple structure, clear principle and acceptable performance. However, it requires a complex laminated structure of dielectric substrates and has disadvantages such as a non-integrated dual-band implementation, which poses challenges to the current application of 5G millimeter-wave dual-band antennas.

The generally designed 5G terminal millimeter wave antenna is 1 × 4 units, so 4 discrete dielectric resonators are required for installation, and 4 times are required for bonding and fixing. The simulation and actual performance of the antenna caused by this design method The error is large.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an integrated dual-frequency dielectric resonator antenna module and electronic equipment, which can realize single dual-frequency and facilitate the installation of the dielectric resonator.

In order to solve the above technical problems, the technical solution adopted in the present invention is: an integrated dual-frequency dielectric resonator antenna module, comprising a dielectric substrate and at least one antenna unit, the antenna unit comprising a dielectric resonator and a first connection part , the dielectric resonator includes a first dielectric resonator and a second dielectric resonator with different sizes, the first dielectric resonator and the second dielectric resonator are connected by the first connection part, and the first dielectric resonator There is a gap between the first dielectric resonator and the second dielectric resonator of each antenna unit; the dielectric substrate is inserted into the gap between the first dielectric resonator and the second dielectric resonator of each antenna unit, and is connected to the first dielectric resonator and the second dielectric resonator of each antenna unit. The second dielectric resonator is in contact; the dielectric resonators in each antenna unit are connected in sequence and integrally formed; the size of the first dielectric resonator is 3mm×3mm×0.85mm, and the size of the second dielectric resonator is 2.5mm×2.5mm×0.6mm; the dielectric constant of the first dielectric resonator and the second dielectric resonator is 21.

The present invention also provides an electronic device, comprising the above-mentioned integrated dual-frequency dielectric resonator antenna module.

The beneficial effects of the present invention are: by integrating the dielectric resonators in each antenna unit, the number of installations during installation can be reduced, thereby reducing uncertain factors during installation, and facilitating mass production; by arranging the dielectric substrate on the first In the space between the dielectric resonator and the second dielectric resonator, the dielectric resonator can be installed in alignment with the dielectric substrate through its own structure, and the dielectric resonator can be fixed on the dielectric substrate without adhesive layer bonding or welding. It can further improve the convenience of installation; by optimizing the size and dielectric constant of the dielectric resonator, it can cover the 28GHz and 39GHz frequency bands in the 5G millimeter wave. The present invention can realize single dual frequency, reduce the complexity of design, facilitate the installation of the dielectric resonator, and can greatly reduce the error caused by the installation.

Description of drawings

1 is a schematic side view of an integrated dual-frequency dielectric resonator antenna module according to Embodiment 1 of the present invention;

2 is a schematic structural diagram of a dielectric resonator and a first connection part of each antenna unit according to Embodiment 1 of the present invention;

3 is a schematic structural diagram of an integrated dual-frequency dielectric resonator antenna module according to Embodiment 1 of the present invention;

4 is a schematic side view of a dielectric resonator and a first connection part of each antenna unit according to Embodiment 1 of the present invention;

5 is a schematic top view of the integrated dual-frequency dielectric resonator antenna module according to Embodiment 1 of the present invention;

6 is a schematic bottom view of the integrated dual-frequency dielectric resonator antenna module according to Embodiment 1 of the present invention;

7 is a schematic diagram of S parameters of the antenna module according to Embodiment 1 of the present invention;

FIG. 8 is a schematic diagram of the antenna module according to Embodiment 1 of the present invention when it is placed in a mobile phone.

Label description:

1. Dielectric substrate; 2. Antenna unit; 3. Second connecting part; 4. Metal coating;

11, first metal layer; 12, first dielectric layer; 13, second dielectric layer; 14, antenna ground layer; 15, third dielectric layer; 16, fourth dielectric layer; 17, second metal layer; 18, first A via hole; 19. A second via hole;

111. A first feeding slot; 112. A first signal input port;

171, the second feeding slot; 172, the second signal input port;

21, the first dielectric resonator; 22, the second dielectric resonator; 23, the first connection part; 24, the first microstrip feed line; 25, the second microstrip feed line.

Detailed ways

In order to describe in detail the technical content, achieved objects and effects of the present invention, detailed descriptions are given below with reference to the embodiments and the accompanying drawings.

Referring to FIG. 1, an integrated dual-frequency dielectric resonator antenna module includes a dielectric substrate and at least one antenna unit, the antenna unit includes a dielectric resonator and a first connecting portion, and the dielectric resonator includes different sizes the first dielectric resonator and the second dielectric resonator, the first dielectric resonator and the second dielectric resonator are connected through the first connection part, and the first dielectric resonator and the second dielectric resonator are connected between There is a gap; the dielectric substrate is inserted into the gap between the first dielectric resonator and the second dielectric resonator of each antenna unit, and is in contact with the first dielectric resonator and the second dielectric resonator of each antenna unit; each The dielectric resonators in the antenna unit are connected in sequence and integrally formed; the size of the first dielectric resonator is 3mm×3mm×0.85mm, and the size of the second dielectric resonator is 2.5mm×2.5mm×0.6mm; The dielectric constant of the first dielectric resonator and the second dielectric resonator is 21.

It can be seen from the above description that the beneficial effects of the present invention are that a single dual frequency can be realized, and the installation of the dielectric resonator is convenient.

Further, the number of the antenna units is four; it also includes three second connection parts, the four antenna units are linearly arranged and connected in sequence through the three second connection parts; the second connection parts The two ends of the antenna are respectively connected to the first dielectric resonator or the second dielectric resonator of two adjacent antenna units.

As can be seen from the above description, the integration of the dielectric resonators of each antenna unit is realized by providing the second connection portion to connect the dielectric resonators of each antenna unit.

Further, the second connecting portion is coated with a metal coating.

As can be seen from the above description, the coupling between the dielectric resonators of different antenna elements can be removed.

Further, the shapes of the first dielectric resonator and the second dielectric resonator are both rectangular parallelepipeds, the first connecting portion is U-shaped, and one end of the first connecting portion is connected to the side surface of the first dielectric resonator. connected, and the other end of the first connection part is connected to the side surface of the second dielectric resonator.

It can be seen from the above description that the first dielectric resonator, the second dielectric resonator and the first connecting portion can be enclosed to form a shape suitable for the dielectric substrate, so that the dielectric substrate can be easily inserted between the first dielectric resonator and the second dielectric resonator. in the interval.

Further, the number of the first connection parts is two, one end of the two first connection parts is respectively connected to the two opposite sides of the first dielectric resonator, and the other ends of the two first connection parts are respectively connected to the two sides of the first dielectric resonator. Two opposite sides of the second dielectric resonator are connected.

As can be seen from the above description, the first dielectric resonator, the second dielectric resonator and the first connecting portion can be enclosed to form a closed square ring, preventing the dielectric substrate inserted into the hollow region from sliding out from the side.

Further, the first connecting portion is coated with a metal coating.

As can be seen from the above description, the coupling between the first dielectric resonator and the second dielectric resonator can be removed.

Further, the dielectric substrate includes a first metal layer, a first dielectric layer, a second dielectric layer, an antenna ground layer, a third dielectric layer, a fourth dielectric layer and a second metal layer stacked in sequence, and the first metal layer A first feeding slot and a first signal input port corresponding to each antenna unit are provided, and a second feeding slot and a second signal input port corresponding to each antenna unit are provided on the second metal layer. ; The first dielectric layer is provided with a first via hole corresponding to each first signal input port and passing through the first dielectric layer, and the fourth dielectric layer is provided with each second signal input port One-to-one correspondence with the second via holes passing through the fourth dielectric layer; the first dielectric resonator abuts the first metal layer and covers the first feeding slot; the second dielectric resonates the device is in contact with the second metal layer and covers the second feeding slot;

The antenna unit further includes a first microstrip feed line and a second microstrip feed line, the first microstrip feed line is arranged between the first dielectric layer and the second dielectric layer, the first microstrip feed line is One end of the feed line is connected to the first signal input port through the first via hole, and the other end of the first microstrip feed line is coupled with the first feed slot; the second microstrip feed line It is arranged between the third dielectric layer and the fourth dielectric layer, one end of the second microstrip feed line is connected to the second signal input port through the second via hole, and the second microstrip feed line is connected to the second signal input port. The other end of the wire is coupled with the second feeding slot.

Further, the projection of the first microstrip feed line on the first metal layer vertically intersects with the first feed slot; the projection of the second microstrip feed line on the second metal layer perpendicularly intersect with the second feeding slot.

It can be seen from the above description that the dielectric resonator is fed by means of slot coupling.

Further, it also includes a first radio frequency chip and a second radio frequency chip, the first radio frequency chip is disposed on the side of the first metal layer away from the first dielectric layer, and is respectively connected to each first signal input port; The second radio frequency chip is disposed on the side of the second metal layer away from the fourth dielectric layer, and is connected to each of the second signal input ports respectively.

It can be seen from the above description that the radio frequency chip is used to provide signals for the antenna, and the first dielectric resonator and the second dielectric resonator are respectively provided with signals by different radio frequency chips.

The present invention also provides an electronic device, comprising the above-mentioned integrated dual-frequency dielectric resonator antenna module.

Example 1

Referring to FIGS. 1-8 , the first embodiment of the present invention is an integrated dual-band dielectric resonator antenna module, which can be applied to a 5G millimeter-wave mobile terminal or a millimeter-wave small base station.

As shown in FIG. 1 , a dielectric substrate 1 and at least one antenna unit 2 are included. In this embodiment, four antenna units 2 are used as an example for description, and the four antenna units 2 are arranged linearly.

With reference to FIG. 2 , each antenna unit 2 includes a dielectric resonator and a first connecting portion 23 , wherein the dielectric resonator includes a first dielectric resonator 21 and a second dielectric resonator 22 with different sizes. In this embodiment, , the size of the first dielectric resonator 21 is larger than the size of the second dielectric resonator 22; the first dielectric resonator 21 and the second dielectric resonator 22 are connected through the first connecting part 23, and the first dielectric resonator 21 and the second dielectric Spaces exist between the resonators 22 .

The dielectric resonators in each antenna unit 2 are sequentially connected and integrally formed; specifically, a second connection part 3 is further included, and the second connection part 3 is used to connect the dielectric resonators of two adjacent antenna units 2 . Since the number of the antenna units 2 in this embodiment is four, the number of the second connection parts 3 is three, and the four antenna units 2 are connected in sequence through the three second connection parts 3 . Wherein, both ends of the second connecting portion 3 are respectively connected to the first dielectric resonator 21 or the second dielectric resonator 22 of two adjacent antenna units 2 . In this embodiment, both ends of the second connecting portion 3 are respectively connected to the first dielectric resonators 21 of two adjacent antenna units 2 .

Referring to FIG. 3 , the dielectric substrate 1 is inserted into the space between the first dielectric resonator 21 and the second dielectric resonator 22 of each antenna unit 2 , and is connected to the first dielectric resonator 21 and the second dielectric resonator 22 of each antenna unit 2 . The dielectric resonator 22 is in contact with each other.

In this embodiment, the shapes of the first dielectric resonator 21 and the second dielectric resonator 22 are both rectangular parallelepipeds, and the first connecting portion 23 is U-shaped. The number of the first connecting parts 23 is two, one end of the two first connecting parts 23 is respectively connected with two opposite sides of the first dielectric resonator 21 , and the other ends of the two first connecting parts 23 are respectively connected with the second dielectric resonator 21 . The two opposite sides of the resonator 22 are connected, so that the first dielectric resonator 21 , the second dielectric resonator 22 and the two first connecting parts 23 can form a closed square ring when viewed from the side. As shown in FIG. 4 , the dielectric The substrate 1 is located in the hollow area of the square ring. Preferably, the thickness of the dielectric substrate is the same as the distance between the first dielectric resonator and the second dielectric resonator, and the width of the dielectric substrate is the same as the distance between the bottom edges of the two first connecting parts (U-shaped), so that The dielectric substrate can just fit into the square annular hollow area.

Further, as shown in FIG. 1 , the first connection portion 23 is coated with a metal coating 4 , such as a copper layer, to remove the coupling between the first dielectric resonator 21 and the second dielectric resonator 22 . The second connecting part 3 is also coated with a metal coating 4 to remove the coupling between the dielectric resonators of different antenna units 2 .

In this embodiment, the size of the first dielectric resonator 21 is 3mm×3mm×0.85mm, and the size of the second dielectric resonator 22 is 2.5mm×2.5mm×0.6mm; the first dielectric resonator 21 and the second dielectric resonate The dielectric constant of the device 22 is 21. By optimizing the dimensions of the first dielectric resonator and the second dielectric resonator, the first dielectric resonator and the second dielectric resonator can respectively excite the 28 GHz and 39 GHz frequency bands in the 5G millimeter wave.

As shown in FIG. 1 , the dielectric substrate 1 includes a first metal layer 11 , a first dielectric layer 12 , a second dielectric layer 13 , an antenna ground layer 14 , a third dielectric layer 15 , a fourth dielectric layer 16 and a second metal layer that are stacked in sequence. In the layer 17 , the first dielectric resonator 21 of each antenna element 2 is in contact with the first metal layer 11 , and the second dielectric resonator 22 of each antenna element 2 is in contact with the second metal layer 17 .

As shown in FIG. 5 , the first metal layer 11 is provided with a first feeding slot 111 and a first signal input port 112 corresponding to each antenna unit one-to-one; the first dielectric resonators 21 of each antenna unit respectively cover the corresponding same antenna The first feeding slot 111 of the unit. As shown in FIG. 6 , the second metal layer 17 is provided with a second feeding slot 171 and a second signal input port 172 corresponding to each antenna element one-to-one; the second dielectric resonator 22 of each antenna element covers the corresponding same The second feeding slot 171 of the antenna unit.

As shown in FIG. 1 , the first dielectric layer 12 is provided with a first via hole 18 corresponding to each of the first signal input ports and passing through the first dielectric layer 12 , and the fourth dielectric layer 16 is provided with a second via hole 18 corresponding to each of the first signal input ports. The signal input ports correspond one-to-one and pass through the second via holes 19 of the fourth dielectric layer.

5-6, the antenna unit 2 further includes a first microstrip feed line 24 and a second microstrip feed line 25, and the first microstrip feed line 24 is arranged between the first dielectric layer 12 and the second dielectric layer 13 During the time, one end of the first microstrip feed line 24 is connected to the first signal input port 112 through the first via 18, and the other end is coupled to the first feed slot; the second microstrip feed line 25 is arranged on the third dielectric layer 15 and the fourth dielectric layer 16, one end of the second microstrip feed line 25 is connected to the second signal input port 172 through the second via hole 19, and the other end of the second microstrip feed line 25 is connected to the second signal input port 172. The feeding slot 171 is coupled.

Further, as shown in FIG. 5 , the projection of the first microstrip feed line 24 on the first metal layer 11 vertically intersects with the first feed slot 111 . As shown in FIG. 6 , the projection of the second microstrip feed line 25 on the second metal layer 17 vertically intersects with the second feed slot 171 .

In this embodiment, the shape and size of the first feeding slot and the second feeding slot corresponding to the same antenna unit are the same and the positions are corresponding, that is, the projection of the first feeding slot on the second metal layer is the same as the second feeding slot. coincide. Similarly, the shape and size of the first microstrip feed line and the second microstrip feed line corresponding to the same antenna unit are the same and the positions are corresponding.

Further, it also includes a first radio frequency chip (not shown in the figure) and a second radio frequency chip (not shown in the figure), and the first radio frequency chip is disposed on the side of the first metal layer 11 away from the first dielectric layer 12, The second RF chip is disposed on the side of the second metal layer 17 away from the fourth dielectric layer 16 and is connected to the second signal input ports 172 respectively.

Among them, the two radio frequency chips are respectively used to provide signals of two frequency bands (28GHz and 39GHz frequency bands) for the antenna. The phase shifter and amplifier included in the RF chip are used to provide the phase difference between the antenna units to achieve the ability of beam scanning, and the amplifier is used to compensate the loss of the phase shifter.

FIG. 7 is a schematic diagram of the S-parameters of the antenna module of the present embodiment. It can be seen from the figure that the antenna module covers dual frequency bands of 28 GHz and 39 GHz.

8 is a schematic diagram of the antenna module of the present embodiment when installed on a mobile device (such as a mobile phone), wherein the DRA (dielectric resonator antenna) with a working frequency band of 28 GHz is responsible for the space coverage in front of the screen, and the DRA with a working frequency band of 39 GHz is responsible for the back space. The space behind the shell is covered. Further, when the two antenna modules of this embodiment are placed in the mobile device one by one and the other opposite, the coverage of the entire space with dual frequency bands will be achieved.

This embodiment can realize single dual frequency, reduce the complexity of design, and the integrated design can greatly reduce the error caused by installation and alignment, and improve the convenience of installation of the dielectric resonator.

To sum up, the integrated dual-frequency dielectric resonator antenna module and electronic equipment provided by the present invention can reduce the number of installations during installation by integrating the dielectric resonators in each antenna unit, thereby reducing the number of times during installation. Uncertain factors, convenient for mass production; by arranging the dielectric substrate in the interval between the first dielectric resonator and the second dielectric resonator, the dielectric resonator can be installed in alignment with the dielectric substrate through its own structure, without the need to pass The dielectric resonator is fixed on the dielectric substrate by adhesive layer bonding or welding, which can further improve the convenience of installation; by optimizing the size of the dielectric resonator, it can cover the 28GHz and 39GHz frequency bands in the 5G millimeter wave. The present invention can realize single dual frequency, reduce the complexity of design, facilitate the installation of the dielectric resonator, and can greatly reduce the error caused by the installation.

The above descriptions are only examples of the present invention, and are not intended to limit the scope of the present invention. Any equivalent transformations made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in related technical fields, are similarly included in the within the scope of patent protection of the present invention.

Claims (10)

1. An integrated dual-frequency dielectric resonator antenna module is characterized by comprising a dielectric substrate and at least one antenna unit, wherein the antenna unit comprises a dielectric resonator and a first connecting part, the dielectric resonator comprises a first dielectric resonator and a second dielectric resonator which are different in size, the first dielectric resonator and the second dielectric resonator are connected through the first connecting part, and a gap is formed between the first dielectric resonator and the second dielectric resonator; the dielectric substrate is inserted into the interval between the first dielectric resonator and the second dielectric resonator of each antenna unit and is abutted against the first dielectric resonator and the second dielectric resonator of each antenna unit; the dielectric resonators in the antenna units are connected in sequence and are integrally formed; the first dielectric resonator is 3mm multiplied by 0.85mm in size, and the second dielectric resonator is 2.5mm multiplied by 0.6mm in size; the dielectric constant of the first dielectric resonator and the dielectric constant of the second dielectric resonator are 21.

2. The integrated dual-band dielectric resonator antenna module of claim 1, wherein the number of the antenna units is four; the four antenna units are linearly arranged and are sequentially connected through the three second connecting parts; and two ends of the second connecting part are respectively connected with the first dielectric resonator or the second dielectric resonator of the two adjacent antenna units.

3. The integrated dual-band dielectric resonator antenna module of claim 2, wherein the second connection portion is coated with a metal coating.

4. The antenna module of claim 1, wherein the first dielectric resonator and the second dielectric resonator are both rectangular solids, the first connection portion is U-shaped, one end of the first connection portion is connected to a side surface of the first dielectric resonator, and the other end of the first connection portion is connected to a side surface of the second dielectric resonator.

5. The antenna module of claim 4, wherein the number of the first connecting portions is two, one end of each of the two first connecting portions is connected to two opposite side surfaces of the first dielectric resonator, and the other end of each of the two first connecting portions is connected to two opposite side surfaces of the second dielectric resonator.

6. The integrated dual-band dielectric resonator antenna module according to any one of claims 1 to 4, wherein the first connection portion is coated with a metal coating.

7. The integrated dual-band dielectric resonator antenna module of claim 1, wherein the dielectric substrate comprises a first metal layer, a first dielectric layer, a second dielectric layer, an antenna ground layer, a third dielectric layer, a fourth dielectric layer and a second metal layer which are sequentially stacked, the first metal layer is provided with a first feed gap and a first signal input port which are in one-to-one correspondence with each antenna unit, and the second metal layer is provided with a second feed gap and a second signal input port which are in one-to-one correspondence with each antenna unit; first via holes which are in one-to-one correspondence with the first signal input ports and penetrate through the first medium layer are formed in the first medium layer, and second via holes which are in one-to-one correspondence with the second signal input ports and penetrate through the fourth medium layer are formed in the fourth medium layer; the first dielectric resonator is abutted with the first metal layer and covers the first feeding gap; the second dielectric resonator is abutted with the second metal layer and covers the second feeding gap;

the antenna unit further comprises a first microstrip feed line and a second microstrip feed line, the first microstrip feed line is arranged between the first medium layer and the second medium layer, one end of the first microstrip feed line is connected with the first signal input port through the first via hole, and the other end of the first microstrip feed line is coupled with the first feed gap; the second microstrip feed line is arranged between the third medium layer and the fourth medium layer, one end of the second microstrip feed line is connected with the second signal input port through the second via hole, and the other end of the second microstrip feed line is coupled with the second feed gap.

8. The integrated dual-band dielectric resonator antenna module of claim 7, wherein a projection of the first microstrip feed line on the first metal layer perpendicularly intersects the first feed slot; the projection of the second microstrip feed line on the second metal layer perpendicularly intersects the second feed slot.

9. The integrated dual-band dielectric resonator antenna module of claim 7, further comprising a first rf chip and a second rf chip, wherein the first rf chip is disposed on a surface of the first metal layer away from the first dielectric layer and is respectively conducted with the first signal input ports; the second radio frequency chip is arranged on one surface, far away from the fourth dielectric layer, of the second metal layer and is respectively communicated with each second signal input port.

10. An electronic device comprising the integrated dual-band dielectric resonator antenna module according to any one of claims 1-9.

Images