CN113097727A - Dual-frequency dielectric resonant antenna for 5G communication and mobile equipment - Google Patents
Dual-frequency dielectric resonant antenna for 5G communication and mobile equipment Download PDFInfo
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- CN113097727A CN113097727A CN202110242872.9A CN202110242872A CN113097727A CN 113097727 A CN113097727 A CN 113097727A CN 202110242872 A CN202110242872 A CN 202110242872A CN 113097727 A CN113097727 A CN 113097727A
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- 238000004891 communication Methods 0.000 title claims abstract description 22
- 230000008878 coupling Effects 0.000 claims abstract description 41
- 238000010168 coupling process Methods 0.000 claims abstract description 41
- 238000005859 coupling reaction Methods 0.000 claims abstract description 41
- 239000000758 substrate Substances 0.000 claims abstract description 40
- 239000000178 monomer Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- 230000005284 excitation Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot 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
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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
- H01Q5/20—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
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Abstract
The invention discloses a double-frequency dielectric resonance antenna for 5G communication and mobile equipment, which comprise a substrate, a dielectric resonator and a microstrip feeder line, wherein the substrate is provided with a first dielectric resonator and a second dielectric resonator; the substrate comprises a first surface and a second surface which are opposite, a coupling feed gap is arranged on the first surface, the dielectric resonator is rectangular, and the coupling feed gap is positioned in a position from one end edge of the dielectric resonator in the length direction of the projection of the dielectric resonator on the substrate to one third of the length of the dielectric resonator; the microstrip feed line is disposed on the second face and coupled with the coupling feed slot. The invention can realize monomer double frequency and reduce the structural complexity.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a dual-frequency dielectric resonant antenna for 5G communication and mobile equipment.
Background
According to the 3GPP TS 38.101-25G terminal radio frequency technical specification and the TR38.817 terminal radio frequency technical report, the 5 GmWave frequency band comprises 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. But the defects that a complex dielectric substrate laminated structure and a non-integrated dual-frequency implementation mode are needed, and the like, are provided, and the challenge is provided for the application of the current 5G millimeter wave dual-frequency antenna.
The existing dual-frequency antennas applied to communication systems generally fall into two categories: one is to use the existing resonance of the antenna and the secondary component of the resonance, for example, if one antenna resonates at 28GHz, then it will resonate at 56GHz, so 28GHz and 56GHz constitute a dual frequency, as shown in fig. 1, but the disadvantage is that the two frequency bands are fixed, and need to form a 2-fold relationship, and the usable range is small. For example, in 5G millimeter waves, it is generally required that 28GHz and 39GHz constitute a dual frequency, but 28GHz and 39GHz have no 2-fold relationship. The other is to distribute 2 antennas inside one antenna element to realize dual frequency, for example, as shown in fig. 2, 1 antenna 103 is responsible for 28GHz radiation, and the other antenna 103 is responsible for 39GHz, and then 1 antenna element appears to realize dual frequency, wherein the feed line 102 passes through the substrate 101. However, this situation requires a complicated multi-layer substrate stack to implement, which results in a dual-band antenna not having an integral dual-band structure and a high processing cost.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the double-frequency dielectric resonance antenna and the mobile equipment for 5G communication are provided, single double-frequency can be realized, and the structural complexity is reduced.
In order to solve the technical problems, the invention adopts the technical scheme that: a dual-frequency dielectric resonant antenna for 5G communication comprises a substrate, a dielectric resonator and a microstrip feed line; the substrate comprises a first surface and a second surface which are opposite, a coupling feed gap is arranged on the first surface, the dielectric resonator is rectangular, and the coupling feed gap is positioned in a position from one end edge of the dielectric resonator in the length direction of the projection of the dielectric resonator on the substrate to one third of the length of the dielectric resonator; the microstrip feed line is disposed on the second face and coupled with the coupling feed slot.
The invention also provides a mobile device comprising the dual-frequency dielectric resonant antenna for 5G communication.
The invention has the beneficial effects that: radio frequency signals are fed in from a microstrip feeder line, coupling feeding is carried out on a dielectric resonator positioned above the microstrip feeder line after passing through a coupling feeding gap, and the dielectric resonator can respectively excite a fundamental mode and a higher-order mode through excitation of the coupling feeding gap at a specific position, so that two working frequency bands are generated. The invention can realize monomer double-frequency, i.e. structure integration and can realize two working frequency bands, thereby reducing the design complexity; the working states of a fundamental mode and a high-order mode can be excited, and the design of an antenna feed structure is simplified; the integral radiation efficiency of the antenna can be greatly improved; meanwhile, the production cost of the millimeter wave antenna can be reduced.
Drawings
Fig. 1 is a return loss diagram of a dual-band antenna in the prior art;
fig. 2 is a cross-sectional view of a prior art dual-band antenna;
fig. 3 is a schematic structural diagram of a dual-band dielectric resonator antenna according to a first embodiment of the present invention;
fig. 4 is a schematic top view of a dual-band dielectric resonator antenna according to a first embodiment of the present invention;
fig. 5 is a schematic diagram of an electric field distribution of a fundamental mode of a dual-band dielectric resonator antenna according to a first embodiment of the present invention;
fig. 6 is a schematic diagram of electric field distribution of a higher-order mode of a dual-band dielectric resonator antenna according to a first embodiment of the present invention;
fig. 7 is a schematic return loss diagram of a dual-band dielectric resonator antenna according to a first embodiment of the present invention.
Description of reference numerals:
101. a substrate; 102. a feed line; 103. an antenna;
1. a substrate; 2. a dielectric resonator; 3. a microstrip feed line; 4. a feed slot is coupled.
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. 3, a dual-band dielectric resonator antenna for 5G communication includes a substrate, a dielectric resonator, and a microstrip feed line; the substrate comprises a first surface and a second surface which are opposite, a coupling feed gap is arranged on the first surface, the dielectric resonator is rectangular, and the coupling feed gap is positioned in a position from one end edge of the dielectric resonator in the length direction of the projection of the dielectric resonator on the substrate to one third of the length of the dielectric resonator; the microstrip feed line is disposed on the second face and coupled with the coupling feed slot.
From the above description, the beneficial effects of the present invention are: the single double-frequency can be realized, and the design complexity is reduced; the working states of a fundamental mode and a high-order mode can be excited, and the design of an antenna feed structure is simplified; the integral radiation efficiency of the antenna can be greatly improved; the production cost of the millimeter wave antenna can be reduced.
Further, the height H of the dielectric resonator is (1/5) a ± 0.05mm, where a is the length of the dielectric resonator.
Furthermore, one end of the microstrip feed line is coupled with the coupling feed gap, and the other end of the microstrip feed line extends to the edge of the substrate and is provided with a feed port.
As can be seen from the above description, a radio frequency signal is fed through the feed port, and then the dielectric resonator is fed through the microstrip feed line and the coupling feed slot in a coupling manner.
Furthermore, the coupling feed gap is in a long strip shape and is parallel to the width direction of the dielectric resonator.
Further, one end of the projection of the microstrip feed line on the substrate perpendicularly intersects the projection of the coupling feed slot on the substrate.
Further, the coupling feed gap is H-shaped.
Further, one end of the projection of the microstrip feed line on the substrate perpendicularly intersects with the waist center of the projection of the coupling feed slot on the substrate.
The invention also provides a mobile device comprising the dual-frequency dielectric resonant antenna for 5G communication.
Example one
Referring to fig. 3-7, a first embodiment of the present invention is: a dual-frequency dielectric resonance antenna can be applied to a 5G communication system, as shown in FIG. 3, and comprises a substrate 1, a dielectric resonator 2 and a microstrip feed line 3, wherein the substrate 1 comprises a first surface and a second surface which are opposite, a coupling feed gap 4 is arranged on the first surface, and the dielectric resonator 2 is arranged on the first surface and covers the coupling feed gap 4; the microstrip feed line 3 is disposed on the second surface and coupled with the coupling feed slot 4. Wherein the substrate is a dielectric substrate; preferably, the dielectric resonator is a ceramic dielectric resonator.
Further, the shape of the dielectric resonator 2 is rectangular, and the coupling feed slot 4 is located within one end edge to one third of the length of the dielectric resonator 2 in the length direction of the projection on the substrate 1; that is, assuming that the length of the dielectric resonator is a, the coupling feed slot is located at 0- (1/3) a along the long side direction of the dielectric resonator. Further, assuming that the height of the dielectric resonator is H, H ≈ 1/5) a, and an error is determined according to process accuracy, for example, H ═ 1/5 a ± 0.05 mm.
Further, as shown in fig. 4, in the present embodiment, the coupling feed slot 4 is in a long strip shape and is parallel to the width direction of the dielectric resonator 2; one end of the projection of the microstrip feed line 3 on the substrate 1 is perpendicularly intersected with the projection of the coupling feed slot 4 on the substrate 1, and the other end of the microstrip feed line 3 extends to the edge of the substrate 1 and is provided with a feed port (not shown in the figure).
In other embodiments, the coupling feed slot may also have an H-shape, in which case, one end of the projection of the microstrip feed line on the substrate perpendicularly intersects with the center of the waist of the projection of the coupling feed slot on the substrate, i.e. perpendicularly intersects with the middle of "H".
Furthermore, a ground layer is further arranged on the first surface of the substrate, and a first gap corresponding to the coupling feed gap is arranged in the ground layer. The dielectric resonator is arranged on the grounding layer and covers the first gap. That is, the first surface of the substrate is provided with a groove as a coupling feed slot, and the ground layer is provided with a slot (i.e., a first slot) corresponding to the groove on the first surface. And a dielectric resonator is disposed on the ground plane and covers the slot.
When the device works, radio-frequency signals are fed in from the microstrip feeder line through the feed port, the dielectric resonator above the feed port is subjected to coupling feed after passing through the coupling feed gap, and the dielectric resonator can respectively excite a fundamental mode and a higher-order mode through the excitation of the coupling feed gap, so that two working frequency bands are generated. The two operating bands produced by this embodiment are 28GHz and 39GHz, respectively.
In this example, the electric field distribution of the fundamental mode is shown in fig. 5, and the electric field distribution of the higher-order mode is shown in fig. 6. The fundamental mode TE111 is determined by the height of the dielectric resonator, and the higher-order mode TE311 is determined by the length of the dielectric resonator. For example, the dielectric resonator has a dielectric constant of 14, H0.9 mm, and a 4.4mm, or a dielectric constant of 21, H0.7 mm, and a 3.7mm, and can realize dual frequencies (28GHz and 39 GHz).
Fig. 7 is a schematic return loss diagram of the dual-band dielectric resonator antenna of this embodiment, and it can be seen that the dual-band dielectric resonator antenna has two resonance points, which can generate two frequency bands.
The dielectric resonance structure of the embodiment can realize single double-frequency, and the design complexity is reduced; the working states of a fundamental mode and a high-order mode can be excited, and the design of an antenna feed structure is simplified; the integral radiation efficiency of the antenna can be greatly improved; meanwhile, the production cost of the millimeter wave antenna can be reduced.
In summary, the dual-frequency dielectric resonant antenna and the mobile device for 5G communication provided by the invention can realize single dual-frequency, and reduce the design complexity; the working states of a fundamental mode and a high-order mode can be excited, and the design of an antenna feed structure is simplified; the integral radiation efficiency of the antenna can be greatly improved; meanwhile, the production cost of the millimeter wave antenna can be reduced.
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 (8)
1. A dual-frequency dielectric resonance antenna for 5G communication is characterized by comprising a substrate, a dielectric resonator and a microstrip feed line; the substrate comprises a first surface and a second surface which are opposite, a coupling feed gap is arranged on the first surface, the dielectric resonator is rectangular, and the coupling feed gap is positioned in a position from one end edge of the dielectric resonator in the length direction of the projection of the dielectric resonator on the substrate to one third of the length of the dielectric resonator; the microstrip feed line is disposed on the second face and coupled with the coupling feed slot.
2. The dual-band dielectric resonator antenna for 5G communication according to claim 1, wherein a height H of the dielectric resonator is (1/5) a ± 0.05mm, and a is a length of the dielectric resonator.
3. The dual-band dielectric resonator antenna for 5G communication according to claim 1, wherein one end of the microstrip feed line is coupled to the coupling feed slot, and the other end of the microstrip feed line extends to an edge of the substrate and is provided with a feed port.
4. The dual-band dielectric resonator antenna for 5G communication according to claim 1, wherein the coupling feed slot is elongated and parallel to a width direction of the dielectric resonator.
5. The dual-band dielectric resonator antenna for 5G communication according to claim 4, wherein one end of the projection of the microstrip feed line on the substrate perpendicularly intersects the projection of the coupling feed slot on the substrate.
6. The dual-band dielectric resonator antenna for 5G communication of claim 1, wherein the coupling feed slot is H-shaped.
7. The dual-band dielectric resonator antenna for 5G communication according to claim 6, wherein one end of the projection of the microstrip feed line on the substrate perpendicularly intersects with the waist center of the projection of the coupling feed slot on the substrate.
8. A mobile device comprising a dual-frequency dielectric resonator antenna for 5G communications according to any one of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110242872.9A CN113097727A (en) | 2021-03-05 | 2021-03-05 | Dual-frequency dielectric resonant antenna for 5G communication and mobile equipment |
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| CN202110242872.9A CN113097727A (en) | 2021-03-05 | 2021-03-05 | Dual-frequency dielectric resonant antenna for 5G communication and mobile equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571883A (en) * | 2021-07-12 | 2021-10-29 | 深圳市信维通信股份有限公司 | Ultra-wideband dielectric resonator antenna and electronic equipment |
| CN113659347A (en) * | 2021-08-10 | 2021-11-16 | 海信集团控股股份有限公司 | Dielectric resonator antenna and terminal |
| CN116826364A (en) * | 2023-07-24 | 2023-09-29 | 深圳市信维通信股份有限公司 | Dual-frequency dielectric resonant antenna applied to 5G communication and communication equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571883A (en) * | 2021-07-12 | 2021-10-29 | 深圳市信维通信股份有限公司 | Ultra-wideband dielectric resonator antenna and electronic equipment |
| CN113659347A (en) * | 2021-08-10 | 2021-11-16 | 海信集团控股股份有限公司 | Dielectric resonator antenna and terminal |
| CN113659347B (en) * | 2021-08-10 | 2024-05-17 | 海信集团控股股份有限公司 | Dielectric resonator antenna and terminal |
| CN116826364A (en) * | 2023-07-24 | 2023-09-29 | 深圳市信维通信股份有限公司 | Dual-frequency dielectric resonant antenna applied to 5G communication and communication equipment |
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