CN114865274A - Integrated dual-frequency dielectric resonator antenna module and electronic equipment - Google Patents
Integrated dual-frequency dielectric resonator antenna module and electronic equipment Download PDFInfo
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- CN114865274A CN114865274A CN202210272922.2A CN202210272922A CN114865274A CN 114865274 A CN114865274 A CN 114865274A CN 202210272922 A CN202210272922 A CN 202210272922A CN 114865274 A CN114865274 A CN 114865274A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q5/30—Arrangements for providing operation on different wavebands
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Abstract
The invention discloses an integrated dual-frequency dielectric resonator antenna module and electronic equipment, which comprise 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 integrally formed. The invention can realize single double frequency and is convenient for installing the dielectric resonator.
Description
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
According to the technical specification of 3GPP TS 38.101-25G terminal radio frequency and the technical report of TR38.817 terminal radio frequency, the 5 GmWave frequency band has n257(26.5-29.5GHz), n258(24.25-27.25GHz), n260(37-40GHz), n261(27.5-28.35GHz) and newly added n259(39.5-43 GHz). Obviously, in 5G millimeter wave mobile terminal communication, multiple groups of antennas can be used to cover the above frequency bands, but it is necessary to reduce the terminal space, so that the structure and design flow of the integrated antenna are simplified by using a single antenna to realize dual-frequency or even multi-frequency characteristics.
Generally, a multi-band microstrip patch antenna is preferred by most designers because of its advantages of simple structure, clear principle, and acceptable performance. However, the dual-band antenna needs a complex dielectric substrate laminated structure and has the defects of a non-integrated dual-band implementation mode and the like, and challenges are brought to the application of the current 5G millimeter wave dual-band antenna.
The commonly designed 5G terminal millimeter wave antenna is a 1 × 4 unit, so 4 discrete dielectric resonators are needed during installation, 4 times are needed during adhesion and fixation, and the design mode causes larger errors in antenna performance simulation and actual performance.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the antenna module and the electronic equipment of the integrated dual-frequency dielectric resonator can realize single dual-frequency and facilitate the installation of the dielectric resonator.
In order to solve the technical problems, the invention adopts the technical scheme that: an integrated dual-frequency dielectric resonator antenna module comprises 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 reserved 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 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.
The invention also provides electronic equipment comprising the integrated dual-frequency dielectric resonator antenna module.
The invention has the beneficial effects that: the dielectric resonators in the antenna units are integrally arranged, so that the mounting times during mounting can be reduced, uncertain factors during mounting are reduced, and mass production is facilitated; the dielectric substrate is arranged in the interval between the first dielectric resonator and the second dielectric resonator, so that the dielectric resonator can be aligned and installed with the dielectric substrate through the self structure, the dielectric resonator can be fixed on the dielectric substrate without being adhered or welded through an adhesive layer, and the convenience of installation can be further improved; by optimizing the size and the dielectric constant of the dielectric resonator, the frequency bands of 28GHz and 39GHz in 5G millimeter waves can be covered. The invention can realize single double frequency, reduce the design complexity, facilitate the installation of the dielectric resonator and greatly reduce the error generated by the installation.
Drawings
Fig. 1 is a schematic side view of an integrated dual-band dielectric resonator antenna module according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dielectric resonator and a first connection portion of each antenna unit according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an integrated dual-band dielectric resonator antenna module according to a first embodiment of the present invention;
fig. 4 is a schematic side view of a dielectric resonator and a first connection portion of each antenna unit according to the first embodiment of the present invention;
fig. 5 is a schematic top view of an integrated dual-band dielectric resonator antenna module according to a first embodiment of the invention;
fig. 6 is a schematic bottom view of an integrated dual-band dielectric resonator antenna module according to a first embodiment of the invention;
fig. 7 is a schematic diagram of S parameters of an antenna module according to a first embodiment of the present invention;
fig. 8 is a schematic view illustrating an antenna module according to an embodiment of the invention when the antenna module is placed in a mobile phone.
Description of reference numerals:
1. a dielectric substrate; 2. an antenna unit; 3. a second connecting portion; 4. a metal coating;
11. a first metal layer; 12. a first dielectric layer; 13. a second dielectric layer; 14. an antenna formation; 15. a third dielectric layer; 16. a fourth dielectric layer; 17. a second metal layer; 18. a first via hole; 19. a second via hole;
111. a first feed slot; 112. a first signal input port;
171. a second feed slot; 172. a second signal input port;
21. a first dielectric resonator; 22. a second dielectric resonator; 23. a first connection portion; 24. a first microstrip feed line; 25. a second microstrip feed line.
Detailed Description
In order to explain technical contents, objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, an integrated dual-band dielectric resonator antenna module includes a dielectric substrate and at least one antenna unit, where the antenna unit includes a dielectric resonator and a first connection portion, the dielectric resonator includes a first dielectric resonator and a second dielectric resonator, the first dielectric resonator and the second dielectric resonator are connected by the first connection portion, and a space exists 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 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.
From the above description, the beneficial effects of the present invention are: the single double-frequency can be realized, and the installation of the dielectric resonator is convenient.
Further, 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.
As is apparent from the above description, the dielectric resonators of the antenna elements are integrated by providing the second connection portion to connect the dielectric resonators of the antenna elements.
Further, the second connection portion is coated with a metal coating.
As can be seen from the above description, the coupling between the dielectric resonators of the different antenna elements can be removed.
Furthermore, the first dielectric resonator and the second dielectric resonator are both rectangular solids, the first connecting portion is U-shaped, one end of the first connecting portion is connected with the side surface of the first dielectric resonator, and the other end of the first connecting portion is connected with the side surface of the second dielectric resonator.
As can be seen from the above description, the first dielectric resonator, the second dielectric resonator and the first connection portion may be enclosed to form a shape adapted to the dielectric substrate, so that the dielectric substrate is inserted into the space between the first dielectric resonator and the second dielectric resonator.
Furthermore, 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.
As can be seen from the above description, the first dielectric resonator, the second dielectric resonator and the first connection portion may be enclosed to form a closed square ring shape, so as to prevent the dielectric substrate inserted into the hollow area from sliding out from the side.
Further, the first connection portion is coated with a metal coating.
As is apparent from the above description, the coupling between the first dielectric resonator and the second dielectric resonator can be removed.
Furthermore, 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 first feed gaps and first signal input ports which are in one-to-one correspondence with the antenna units, and the second metal layer is provided with second feed gaps and second signal input ports which are in one-to-one correspondence with the antenna units; 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.
Further, 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.
As can be seen from the above description, the dielectric resonator is fed by means of slot coupling.
The first radio frequency chip is arranged on one surface of the first metal layer, which is far away from the first dielectric layer, and is respectively communicated with each first signal input port; 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.
As can be seen from the above description, the rf 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 rf chips.
The invention also provides electronic equipment comprising the integrated dual-frequency dielectric resonator antenna module.
Example one
Referring to fig. 1-8, a first embodiment of the present invention is: the integrated dual-frequency dielectric resonator antenna module can be applied to a 5G millimeter wave mobile terminal or a millimeter wave small base station.
As shown in fig. 1, the antenna device includes a dielectric substrate 1 and at least one antenna unit 2, and in this embodiment, four antenna units 2 are taken as an example for description, and the four antenna units 2 are linearly arranged.
As shown in fig. 2, each antenna unit 2 includes a dielectric resonator and a first connection portion 23, where the dielectric resonator includes a first dielectric resonator 21 and a second dielectric resonator 22 that are different in size, and in this embodiment, the size of the first dielectric resonator 21 is larger than that of the second dielectric resonator 22; the first dielectric resonator 21 and the second dielectric resonator 22 are connected by a first connection portion 23, and a space is provided between the first dielectric resonator 21 and the second dielectric resonator 22.
The dielectric resonators in the antenna units 2 are connected in sequence and integrally formed; specifically, the antenna further includes a second connection portion 3, and the second connection portion 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 portions 3 is three, and the four antenna units 2 are sequentially connected by the three second connection portions 3. Both ends of the second connection portion 3 are connected to the first dielectric resonator 21 or the second dielectric resonator 22 of the two adjacent antenna units 2, respectively. In this embodiment, both ends of the second connection portion 3 are connected to the first dielectric resonators 21 of the two adjacent antenna units 2, respectively.
As shown in 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 in contact with the first dielectric resonator 21 and the second dielectric resonator 22 of each antenna unit 2.
In the present embodiment, the first dielectric resonator 21 and the second dielectric resonator 22 are both rectangular solids, and the first connection portion 23 is U-shaped. The number of the first connecting portions 23 is two, one end of each of the two first connecting portions 23 is connected to each of two opposite side surfaces of the first dielectric resonator 21, and the other end of each of the two first connecting portions 23 is connected to each of two opposite side surfaces of the second dielectric resonator 22, so that the first dielectric resonator 21, the second dielectric resonator 22, and the two first connecting portions 23 can form a closed square ring shape when viewed from the side surface, and as shown in fig. 4, the dielectric substrate 1 is located in a hollow area of the square ring shape. 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 portions (of the U shape), so that the dielectric substrate can be just embedded into the hollow region of the square ring shape.
Further, as shown in fig. 1, the first connection portion 23 is coated with a metal coating 4, such as a copper coating, to remove the coupling between the first dielectric resonator 21 and the second dielectric resonator 22. The second connection portion 3 is also coated with a metal coating 4 to remove coupling between the dielectric resonators of different antenna elements 2.
In the present embodiment, the first dielectric resonator 21 has a size of 3mm × 3mm × 0.85mm, and the second dielectric resonator 22 has a size of 2.5mm × 2.5mm × 0.6 mm; the first dielectric resonator 21 and the second dielectric resonator 22 have a dielectric constant of 21. The first dielectric resonator and the second dielectric resonator are enabled to excite the 28GHz frequency band and the 39GHz frequency band in the 5G millimeter wave respectively by optimizing the sizes of the first dielectric resonator and the second dielectric resonator.
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 17, which are sequentially stacked, a first dielectric resonator 21 of each antenna unit 2 abuts against the first metal layer 11, and a second dielectric resonator 22 of each antenna unit 2 abuts against the second metal layer 17.
As shown in fig. 5, the first metal layer 11 is provided with first feeding slots 111 and first signal input ports 112 corresponding to the antenna elements one to one; the first dielectric resonator 21 of each antenna element covers the first feed slot 111 corresponding to the same antenna element. 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 second feed slot 171 corresponding to the same antenna element.
As shown in fig. 1, the first dielectric layer 12 has first via holes 18 corresponding to the first signal input ports and penetrating through the first dielectric layer 12, and the fourth dielectric layer 16 has second via holes 19 corresponding to the second signal input ports and penetrating through the fourth dielectric layer.
As shown in fig. 5-6, the antenna unit 2 further includes a first microstrip feed line 24 and a second microstrip feed line 25, the first microstrip feed line 24 is disposed between the first dielectric layer 12 and the second dielectric layer 13, one end of the first microstrip feed line 24 is connected to the first signal input port 112 through the first via hole 18, and the other end is coupled to the first feed slot; the second microstrip feed line 25 is disposed between the third medium layer 15 and the fourth medium layer 16, one end of the second microstrip feed line 25 is connected to the second signal input port 172 through the second via 19, and the other end of the second microstrip feed line 25 is coupled to the second feed slot 171.
Further, as shown in fig. 5, the projection of the first microstrip feed line 24 on the first metal layer 11 perpendicularly intersects 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 perpendicularly intersects the second feed slot 171.
In this embodiment, the first feeding slot and the second feeding slot corresponding to the same antenna element have the same shape and size and correspond to each other in position, that is, the projection of the first feeding slot on the second metal layer coincides with the second feeding slot. In the same way, the first microstrip feed line and the second microstrip feed line corresponding to the same antenna unit have the same shape and size and correspond in position.
Further, the antenna further comprises a first rf chip (not shown) and a second rf chip (not shown), wherein the first rf chip is disposed on a surface of the first metal layer 11 away from the first dielectric layer 12, and is respectively conducted with the first signal input ports 121; the second rf chip is disposed on a surface of the second metal layer 17 away from the fourth dielectric layer 16, and is respectively connected to the second signal input ports 172.
The two radio frequency chips are respectively used for providing signals of two frequency bands (28GHz and 39GHz frequency bands) for the antenna. The radio frequency chip comprises elements such as a phase shifter and an amplifier, wherein the phase shifter is used for providing phase difference among the antenna units to realize the beam scanning capacity, and the amplifier is used for compensating the loss of the phase shifter.
Fig. 7 is a schematic diagram of S parameters of the antenna module of this embodiment, and it can be seen that the antenna module covers the dual bands of 28GHz and 39 GHz.
Fig. 8 is a schematic diagram of the antenna module of this embodiment when the antenna module is mounted on a mobile device (e.g., a mobile phone), where a DRA (dielectric resonator antenna) with an operating frequency band of 28GHz is responsible for covering a space in front of a screen, and a DRA with an operating frequency band of 39GHz is responsible for covering a space behind a back cover. Further, when two antenna modules of the present embodiment are placed in a mobile device in a forward and backward direction, the coverage of the whole space with dual frequency bands will be realized.
The embodiment can realize single double-frequency, reduce the design complexity, greatly reduce the error generated by installation alignment by the integrated design, and improve the convenience of the installation of the dielectric resonator.
In summary, the integrated dual-band dielectric resonator antenna module and the electronic device provided by the invention can reduce the installation times during installation by integrally arranging the dielectric resonators in the antenna units, thereby reducing uncertain factors during installation and facilitating mass production; the dielectric substrate is arranged in the interval between the first dielectric resonator and the second dielectric resonator, so that the dielectric resonator can be aligned and installed with the dielectric substrate through the self structure, the dielectric resonator can be fixed on the dielectric substrate without being adhered or welded through an adhesive layer, and the convenience of installation can be further improved; by optimizing the size of the dielectric resonator, the frequency bands of 28GHz and 39GHz in 5G millimeter waves can be covered. The invention can realize single double frequency, reduce the design complexity, facilitate the installation of the dielectric resonator and greatly reduce the error generated by the installation.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210272922.2A CN114865274A (en) | 2022-03-18 | 2022-03-18 | Integrated dual-frequency dielectric resonator antenna module and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210272922.2A CN114865274A (en) | 2022-03-18 | 2022-03-18 | Integrated dual-frequency dielectric resonator antenna module and electronic equipment |
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| CN114865274A true CN114865274A (en) | 2022-08-05 |
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| CN202210272922.2A Pending CN114865274A (en) | 2022-03-18 | 2022-03-18 | Integrated dual-frequency dielectric resonator antenna module and electronic equipment |
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