CN215008585U - 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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- CN215008585U CN215008585U CN202120477619.7U CN202120477619U CN215008585U CN 215008585 U CN215008585 U CN 215008585U CN 202120477619 U CN202120477619 U CN 202120477619U CN 215008585 U CN215008585 U CN 215008585U
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Abstract
The utility model discloses a double-frequency dielectric resonance antenna and mobile device for 5G communication, which 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 arranged on the first surface, 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; the microstrip feed line is disposed on the second face and coupled with the coupling feed slot. The utility model discloses can realize the monomer double-frequency, reduce the structure complexity.
Description
Technical Field
The utility model relates to a wireless communication technology field especially relates to a dual-frenquency medium resonance antenna and mobile device for 5G communication.
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.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: 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 problem, the utility model discloses a technical scheme be: 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 arranged on the first surface, 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; the microstrip feed line is disposed on the second face and coupled with the coupling feed slot.
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.
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 utility model also provides a mobile device, include as above a dual-frenquency medium resonance antenna for 5G communication.
The beneficial effects of the utility model reside in 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 utility model can realize single body double frequency, i.e. the structure is integrated and can realize two working frequency bands, thus 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 view of an electric field distribution of a higher mode of a dual-band dielectric resonator antenna according to a first embodiment of the present invention;
fig. 7 is a 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 the technical content, the objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.
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 arranged on the first surface, 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; 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 utility model also provides a mobile device, include as above a dual-frenquency medium resonance 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.
To sum up, the utility model provides a dual-frenquency dielectric resonator antenna and mobile device for 5G communication can realize monomer dual-frenquency, has reduced 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 mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection 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 arranged on the first surface, 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; 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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| CN202120477619.7U CN215008585U (en) | 2021-03-05 | 2021-03-05 | Dual-frequency dielectric resonant antenna for 5G communication and mobile equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113097727A (en) * | 2021-03-05 | 2021-07-09 | 深圳市信维通信股份有限公司 | Dual-frequency dielectric resonant antenna for 5G communication and mobile equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097727A (en) * | 2021-03-05 | 2021-07-09 | 深圳市信维通信股份有限公司 | Dual-frequency dielectric resonant antenna for 5G communication and mobile equipment |
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