CN114899611A - Dielectric resonator antenna and electronic device - Google Patents
Dielectric resonator antenna and electronic device Download PDFInfo
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- CN114899611A CN114899611A CN202210447946.7A CN202210447946A CN114899611A CN 114899611 A CN114899611 A CN 114899611A CN 202210447946 A CN202210447946 A CN 202210447946A CN 114899611 A CN114899611 A CN 114899611A
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- dielectric resonator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0485—Dielectric resonator antennas
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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
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a dielectric resonator antenna and electronic equipment, which comprise a dielectric substrate, a dielectric resonator and a feed metal rod, wherein the dielectric resonator is provided with an opening matched with the feed metal rod along the axial direction, and the dielectric substrate is provided with a first through hole which penetrates through the dielectric substrate and is matched with the feed metal rod; the dielectric resonator is positioned on the dielectric substrate, one end of the feed metal rod is at least partially arranged in the open hole and is tightly connected with the dielectric resonator, and the other end of the feed metal rod penetrates through the first through hole and is tightly connected with the dielectric substrate; the dielectric resonator is a ceramic dielectric resonator. The invention realizes the feed of the dielectric resonator and the integration of the dielectric resonator and the PCB through the metal feed rod, can effectively ensure the performance of the antenna and can reduce the installation cost.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a dielectric resonator antenna and electronic equipment.
Background
5G is the focus of research and development in the world, and 5G standard has become common in the industry by developing 5G technology. The international telecommunications union ITU identified three major application scenarios for 5G at ITU-RWP5D meeting No. 22 held 6 months 2015: enhanced mobile broadband, large-scale machine communication, high-reliability and low-delay communication. The 3 application scenes correspond to different key indexes respectively, wherein the peak speed of a user in the enhanced mobile bandwidth scene is 20Gbps, and the lowest user experience rate is 100 Mbps. The unique high carrier frequency and large bandwidth characteristics of millimeter waves are the main means for realizing 5G ultrahigh data transmission rate. Meanwhile, the space reserved for the 5G antenna in the future mobile phone is small, and the number of selectable positions is small, so that a miniaturized antenna module needs to be designed.
The 3GPP is performing standardization work on 5G technologies, and the first international standard for 5G non-independent Networking (NSA) is formally completed and frozen in 12 months in 2017, and the 5G independent networking standard is completed in 14 days in 6 months in 2018. 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).
No matter the antenna form of the conventional millimeter wave broadband antenna based on the PCB is Patch (Patch), Dipole (Dipole), slot (slot) and the like, because the bandwidth is required to cover n257, n258 and n260, the thickness of the PCB is increased, the number of layers at the moment is increased, and because in a millimeter frequency band, the precision requirements of the multilayer PCB on hole, line width and line distance are high, and the processing difficulty is high.
The dielectric resonator has the advantages of small loss, high radiation efficiency and the like, and compared with a conventional millimeter wave broadband antenna based on a PCB, the dielectric resonator antenna has the advantages of small volume and low cost. The integration of the dielectric resonator antenna and the PCB is generally performed in two ways, namely gluing and SMT soldering. However, in the glue bonding method, the antenna performance is sharply attenuated due to the millimeter-scale change of the thickness of the glue. For the SMT welding mode, metal is plated on the surface of a medium and then the medium is connected with a bonding pad on a PCB, but the feed impedance is changed violently due to uncontrollable welding tin. Therefore, integration of the dielectric resonator is a problem to be solved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided are a dielectric resonator antenna and an electronic device, which can facilitate the integration of a dielectric resonator and a substrate and effectively ensure the antenna performance.
In order to solve the technical problems, the invention adopts the technical scheme that: a dielectric resonator antenna comprises a dielectric substrate, a dielectric resonator and a feed metal rod, wherein an opening matched with the feed metal rod is axially formed in the dielectric resonator, and a first through hole penetrating through the dielectric substrate and matched with the feed metal rod is formed in the dielectric substrate; the dielectric resonator is positioned on the dielectric substrate, one end of the feed metal rod is at least partially arranged in the open hole and is tightly connected with the dielectric resonator, and the other end of the feed metal rod penetrates through the first through hole and is tightly connected with the dielectric substrate; the dielectric resonator is a ceramic dielectric resonator.
The invention also provides an electronic device comprising the dielectric resonator antenna.
The invention has the beneficial effects that: one end of the feed metal rod is tightly connected with the dielectric resonator through the open hole on the dielectric resonator, and the other end of the feed metal rod penetrates through the first through hole on the dielectric substrate and is tightly connected with the dielectric substrate, so that the integration between the dielectric resonator and the dielectric substrate is realized through the feed metal rod, the feed metal rod can be used as a feed structure to feed the dielectric resonator, the function of fixing the dielectric resonator can be achieved, and the rapid attenuation of the antenna performance or the severe change of the feed impedance caused by the thickness of glue or the welding of tin materials can be avoided, so that the antenna performance can be effectively ensured; the dielectric resonator antenna formed by the ceramic body is high in processing precision, small in size in a millimeter wave frequency band, low in cost and great in advantages compared with a PCB. The invention realizes the feed of the dielectric resonator and the integration of the dielectric resonator and the PCB through the metal feed rod, can effectively ensure the performance of the antenna and can reduce the installation cost.
Drawings
Fig. 1 is a schematic structural diagram of a dielectric resonator antenna according to a first embodiment of the present invention;
fig. 2 is a schematic bottom view of a dielectric resonator antenna according to a first embodiment of the present invention.
Description of reference numerals:
1. a dielectric substrate; 2. a dielectric resonator; 3. a feed metal rod; 4. an antenna ground; 5. a pad; 6. a feed line;
11. a first through hole; 21. opening a hole; 41. a second via.
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, a dielectric resonator antenna includes a dielectric substrate, a dielectric resonator, and a feed metal rod, where the dielectric resonator is provided with an opening adapted to the feed metal rod along an axial direction, and the dielectric substrate is provided with a first through hole penetrating through the dielectric substrate and adapted to the feed metal rod; the dielectric resonator is positioned on the dielectric substrate, one end of the feed metal rod is at least partially arranged in the open hole and is tightly connected with the dielectric resonator, and the other end of the feed metal rod penetrates through the first through hole and is tightly connected with the dielectric substrate.
From the above description, the beneficial effects of the present invention are: the feeding of the dielectric resonator and the integration of the dielectric resonator and the PCB are realized through the metal feed rod, the performance of the antenna can be effectively ensured, and the installation cost can be reduced.
The antenna ground is arranged on one surface of the dielectric substrate, and the dielectric resonator is positioned on one surface of the antenna ground far away from the dielectric substrate; and a second through hole is formed in the antenna ground, and the other end of the feed metal rod sequentially penetrates through the second through hole and the first through hole and is tightly connected with the dielectric substrate.
Further, the area of the second through hole is larger than the transverse cross-sectional area of the feed metal rod.
As can be seen from the above description, the feed metal bar is prevented from being grounded.
Furthermore, the opening penetrates through the dielectric resonator, and one end of the feed metal rod protrudes out of one surface of the dielectric resonator, which is far away from the dielectric substrate.
As can be seen from the above description, the feeding metal rod protrudes out of the dielectric resonator, so that the feeding metal rod can also be used as a monopole antenna for radiation, thereby increasing the bandwidth of the antenna.
The dielectric substrate is provided with a dielectric resonator, the dielectric resonator is arranged on the dielectric substrate, and the dielectric substrate is provided with a feed metal rod.
As can be seen from the above description, by providing the bonding pad, the connection reliability between the feed metal bar and the dielectric substrate can be further ensured.
The dielectric substrate is provided with a dielectric resonator, the dielectric resonator is arranged on the dielectric substrate, and the dielectric resonator is arranged on the dielectric substrate.
Further, the tail end of one end of the feeder line is annular and is sleeved with the welding plate.
As is apparent from the above description, the power feeding line can be brought into sufficient contact with the pad, thereby securing connection reliability between the power feeding line and the power feeding metal bar.
The radio frequency chip is arranged on one surface of the dielectric substrate, which is far away from the dielectric resonator, and the other end of the feeder line is connected with the radio frequency chip.
As can be seen from the above description, the rf chip is used to provide signals to the antenna.
The invention also provides an electronic device comprising the dielectric resonator antenna.
Example one
Referring to fig. 1-2, a first embodiment of the present invention is: a dielectric resonator antenna can be applied to handheld equipment of a 5G millimeter wave communication system.
As shown in fig. 1, the antenna comprises a dielectric substrate 1, a dielectric resonator 2, a feed metal rod 3, and an antenna ground 4, wherein an opening 21 adapted to the feed metal rod 3 is axially formed in the dielectric resonator 2, a first through hole 11 penetrating through the dielectric substrate 1 and adapted to the feed metal rod 3 is formed in the dielectric substrate 1, a second through hole 41 is formed in the antenna ground 4, and the area of the second through hole 41 is larger than the transverse cross-sectional area of the feed metal rod 3, so that the feed metal rod 3 is prevented from being grounded.
The antenna ground 4 is arranged on one surface of the dielectric substrate 1, the dielectric resonator 2 is positioned on one surface of the antenna ground 4 far away from the dielectric substrate 1, and the central axes of the open hole 21, the first through hole 11 and the second through hole 41 are overlapped; one end of the feeding metal rod 3 is at least partially disposed in the opening 21 and tightly connected to the dielectric resonator 2, and the other end of the feeding metal rod 3 sequentially passes through the second through hole 41 and the first through hole 11 and tightly connected to the dielectric substrate 1.
In an alternative embodiment, the tight connection is achieved by an interference fit.
One end of the feed metal rod is tightly connected with the dielectric resonator through the open hole in the dielectric resonator, and the other end of the feed metal rod is tightly connected with the dielectric substrate through the first through hole in the dielectric substrate, so that the integration between the dielectric resonator and the dielectric substrate is realized through the feed metal rod, the feed metal rod can be used as a feed structure to feed the dielectric resonator, and the effect of fixing the dielectric resonator can be achieved.
Among them, the dielectric resonator 2 may be a ceramic dielectric resonator. The dielectric resonator antenna formed by the ceramic body is high in processing precision, small in size in a millimeter wave frequency band, low in cost and great in advantages compared with a PCB.
In this embodiment, the dielectric resonator 2 is cylindrical in shape, and the opening 21 is located at the central axis of the dielectric resonator 2. In alternative embodiments, the dielectric resonator may be other shapes.
In an alternative embodiment, the opening in the dielectric resonator may not extend through the dielectric resonator, in this case, an opening is axially disposed on a side of the dielectric resonator close to the dielectric substrate, and one end of the feed metal rod is embedded in the opening. In this embodiment, the opening 21 penetrates through the dielectric resonator 2, and one end of the feeding metal rod 3 penetrates through the opening 21 and protrudes from one side of the dielectric resonator 2 away from the dielectric substrate 1. One end of the feed metal rod protrudes out of the dielectric resonator, so that the feed metal rod can also be used as a monopole antenna to radiate, the radiation mode of the antenna is a mixed mode (the radiation mode of the dielectric resonator antenna and the radiation mode of the monopole antenna), and the bandwidth of the antenna can be increased.
As shown in fig. 2, the dielectric substrate 1 further includes a pad 5, the pad 5 is disposed on a surface of the dielectric substrate 1 away from the dielectric resonator 2, and the pad 5 is connected to the other end of the feed metal rod 3, that is, the other end of the feed metal rod 3 sequentially passes through the second through hole 41 and the first through hole 11 and then is connected to the pad 5, so as to further ensure the connection reliability between the feed metal rod 3 and the dielectric substrate 1.
Furthermore, the dielectric substrate further comprises a feeder line 6 and a radio frequency chip (not shown in the figure), wherein the feeder line 6 and the radio frequency chip are arranged on one surface of the dielectric substrate 1 far away from the dielectric resonator 2, one end of the feeder line 6 is connected with the bonding pad 5, and the other end of the feeder line 6 is connected with the radio frequency chip. In this embodiment, the end of one end of the feeder line 6 is annular and is fitted to the pad 5. That is, the tail end of the feeder line 6 connected with the feed metal rod 3 is provided with a ring shape matched with the pad 5, and the feeder line 6 is sleeved on the pad 5, so that the feeder line 6 can be fully contacted with the pad 5, and the connection reliability between the feeder line 6 and the feed metal rod 3 is further ensured.
The radio frequency chip is used for providing signals 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 capability, and the amplifier is used for compensating the loss of the phase shifter.
In the embodiment, the integration of the dielectric resonator and the PCB is realized through the metal feed rod, so that the performance of the antenna is not rapidly attenuated, and the feed impedance is not severely changed; the metal feed rod is simultaneously used as an integrated part of the dielectric resonator, a part of the feed structure and a part of the antenna radiation structure, so that the antenna performance is effectively ensured, a plurality of frequency bands can be covered, the ultra-bandwidth is realized, and the cost can be saved.
In summary, the dielectric resonator antenna and the electronic device provided by the invention realize integration between the dielectric resonator and the dielectric substrate through the feed metal rod, so that the feed metal rod can be used as a feed structure to feed the dielectric resonator, can also play a role in fixing the dielectric resonator, and can avoid rapid attenuation of antenna performance or severe change of feed impedance caused by glue thickness or solder welding, thereby effectively ensuring antenna performance; by arranging the bonding pad, the connection reliability between the feed metal rod and the dielectric substrate can be further ensured; the tail end of one end of the feeder line, which is connected with the feed metal rod, is provided with a ring matched with the bonding pad, so that the feeder line can be fully contacted with the bonding pad, and the connection reliability between the feeder line and the feed metal rod is ensured; one end of the feed metal rod protrudes out of the dielectric resonator, so that the feed metal rod can also be used as a monopole antenna to radiate, the radiation mode of the antenna is a mixed mode, and the bandwidth of the antenna can be increased. The invention realizes the integration of the dielectric resonator and the PCB, the feed of the dielectric resonator and the radiation of the monopole antenna through the metal feed rod, can effectively ensure the performance of the antenna, can cover a plurality of frequency bands, and has the advantages of easy processing, simple manufacture and low cost.
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 (9)
1. A dielectric resonator antenna is characterized by comprising a dielectric substrate, a dielectric resonator and a feed metal rod, wherein an opening matched with the feed metal rod is axially formed in the dielectric resonator, and a first through hole penetrating through the dielectric substrate and matched with the feed metal rod is formed in the dielectric substrate; the dielectric resonator is positioned on the dielectric substrate, one end of the feed metal rod is at least partially arranged in the open hole and is tightly connected with the dielectric resonator, and the other end of the feed metal rod penetrates through the first through hole and is tightly connected with the dielectric substrate; the dielectric resonator is a ceramic dielectric resonator.
2. The dielectric resonator antenna according to claim 1, further comprising an antenna ground provided on a side of the dielectric substrate, the dielectric resonator being located on a side of the antenna ground remote from the dielectric substrate; and a second through hole is formed in the antenna ground, and the other end of the feed metal rod sequentially penetrates through the second through hole and the first through hole and is tightly connected with the dielectric substrate.
3. A dielectric resonator antenna according to claim 2, wherein the second via hole has an area greater than a transverse cross-sectional area of the feed metal rod.
4. The dielectric resonator antenna of claim 1, wherein the opening extends through the dielectric resonator, and an end of the feed metal rod protrudes from a side of the dielectric resonator that is away from the dielectric substrate.
5. The dielectric resonator antenna of claim 1, further comprising a pad disposed on a side of the dielectric substrate remote from the dielectric resonator, the pad being connected to the other end of the feed metal rod.
6. The dielectric resonator antenna according to claim 5, further comprising a feed line provided on a side of the dielectric substrate remote from the dielectric resonator, one end of the feed line being connected to the land.
7. The dielectric resonator antenna according to claim 6, wherein one end of the feed line terminates in a loop and is fitted over the land.
8. The dielectric resonator antenna of claim 6, further comprising a radio frequency chip, wherein the radio frequency chip is disposed on a side of the dielectric substrate away from the dielectric resonator, and the other end of the feeding line is connected to the radio frequency chip.
9. An electronic device comprising a dielectric resonator antenna according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210447946.7A CN114899611B (en) | 2022-04-26 | 2022-04-26 | Dielectric resonator antenna and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210447946.7A CN114899611B (en) | 2022-04-26 | 2022-04-26 | Dielectric resonator antenna and electronic device |
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| Publication Number | Publication Date |
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| CN114899611A true CN114899611A (en) | 2022-08-12 |
| CN114899611B CN114899611B (en) | 2023-08-11 |
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Citations (6)
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| WO2002039535A1 (en) * | 2000-11-13 | 2002-05-16 | Remec Oy | Dielectric resonator |
| US20060071874A1 (en) * | 2004-10-06 | 2006-04-06 | Wither David M | Antenna feed structure |
| CN103825084A (en) * | 2014-02-25 | 2014-05-28 | 东南大学 | 2.4/5 GHz double-frequency omni-directional antenna suitable for wireless local area network |
| CN106329079A (en) * | 2016-10-12 | 2017-01-11 | 北京邮电大学 | Compact wideband, dual polarization and orientation diagram reconfigurable dielectric resonant antenna |
| CN111600117A (en) * | 2020-05-12 | 2020-08-28 | 中天宽带技术有限公司 | Dielectric resonator antenna |
| CN113193368A (en) * | 2021-03-16 | 2021-07-30 | 深圳市信维通信股份有限公司 | Dielectric resonator antenna, dielectric resonator antenna module and electronic equipment |
-
2022
- 2022-04-26 CN CN202210447946.7A patent/CN114899611B/en active Active
Patent Citations (6)
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| WO2002039535A1 (en) * | 2000-11-13 | 2002-05-16 | Remec Oy | Dielectric resonator |
| US20060071874A1 (en) * | 2004-10-06 | 2006-04-06 | Wither David M | Antenna feed structure |
| CN103825084A (en) * | 2014-02-25 | 2014-05-28 | 东南大学 | 2.4/5 GHz double-frequency omni-directional antenna suitable for wireless local area network |
| CN106329079A (en) * | 2016-10-12 | 2017-01-11 | 北京邮电大学 | Compact wideband, dual polarization and orientation diagram reconfigurable dielectric resonant antenna |
| CN111600117A (en) * | 2020-05-12 | 2020-08-28 | 中天宽带技术有限公司 | Dielectric resonator antenna |
| CN113193368A (en) * | 2021-03-16 | 2021-07-30 | 深圳市信维通信股份有限公司 | Dielectric resonator antenna, dielectric resonator antenna module and electronic equipment |
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