CN111430889A - Terminal antenna and terminal - Google Patents
Terminal antenna and terminal Download PDFInfo
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- CN111430889A CN111430889A CN201910024267.7A CN201910024267A CN111430889A CN 111430889 A CN111430889 A CN 111430889A CN 201910024267 A CN201910024267 A CN 201910024267A CN 111430889 A CN111430889 A CN 111430889A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
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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)
- Signal Processing (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The terminal antenna and the terminal provided by the embodiment of the invention comprise N antennas, wherein each antenna is symmetrically arranged on two second dielectric substrates of the terminal, and the two second dielectric substrates are respectively arranged on two opposite side edges of a first dielectric substrate and are vertical to the first dielectric substrate; each antenna group is axisymmetrical based on a central axis of the first medium substrate in the horizontal and vertical directions; in each antenna, a decoupling unit is arranged between the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with the floor arranged at the bottom of the first dielectric substrate of the terminal. Therefore, through the arrangement of the plurality of antennas, the strength of the antennas is guaranteed, the decoupling units arranged between the antennas guarantee the isolation between the antennas, and the use experience of the antennas is improved.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to but not limited to a terminal antenna and a terminal.
Background
At present, the handheld terminal is developed towards miniaturization and wearable, and the originally insufficient space for antenna design is more strained. Meanwhile, in the mimo-Input Multiple-Output antenna array, due to the limitation of the use space, the antenna unit spacing is closer along with the increase of the number of the antenna units. Too close a cell pitch excites strong surface wave coupling and spatial inductive coupling between antennas, thereby degrading the frequency band, efficiency, etc. performance of the MIMO array. Therefore, how to adopt a reasonable and effective decoupling measure to ensure the comprehensive performance of the antenna array is very necessary. Antenna strip design in the related art, either antenna isolation is poor or antenna strength is weak, and cannot meet increasing communication requirements.
Disclosure of Invention
The terminal antenna and the terminal provided by the embodiment of the invention mainly solve the technical problem that the terminal antenna arrangement in the related technology is difficult to ensure better strength and isolation.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a terminal antenna, including N antennas, where each antenna is symmetrically disposed on two second dielectric substrates of a terminal, and the two second dielectric substrates are respectively disposed on two opposite side edges of a first dielectric substrate and are perpendicular to the first dielectric substrate; each antenna group is axisymmetrical based on a central axis of the first medium substrate in the horizontal and vertical directions; in each antenna, a decoupling unit is arranged between the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with the floor arranged at the bottom of the first dielectric substrate of the terminal.
The embodiment of the invention also provides a terminal, which comprises a terminal body and the terminal antenna, wherein the terminal body at least comprises the first dielectric substrate, the second dielectric substrate, the feeding point and the floor.
The invention has the beneficial effects that:
according to the terminal antenna and the terminal provided by the embodiment of the invention, the terminal antenna comprises N antennas, each antenna is symmetrically arranged on two second dielectric substrates of the terminal, and the two second dielectric substrates are respectively arranged on two opposite side edges of a first dielectric substrate and are vertical to the first dielectric substrate; each antenna group is axisymmetrical based on a central axis of the first medium substrate in the horizontal and vertical directions; in each antenna, a decoupling unit is arranged between the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with the floor arranged at the bottom of the first dielectric substrate of the terminal. Therefore, through the arrangement of the plurality of antennas, the strength of the antennas is guaranteed, the decoupling units arranged between the antennas guarantee the isolation between the antennas, and the use experience of the antennas is improved.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic view of a terminal antenna structure according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an antenna unit according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a decoupling unit according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
referring to fig. 1, the terminal antenna 5 includes N antennas 5, each antenna 5 is symmetrically disposed on two second dielectric substrates 2 of the terminal, and the two second dielectric substrates 2 are respectively disposed on two opposite sides of the first dielectric substrate 1 and perpendicular to the first dielectric substrate 1; each antenna 5 group is axisymmetrical based on the central axis of the first dielectric substrate 1 in the horizontal and vertical directions; in each antenna 5, a decoupling unit is arranged between the antennas 5 arranged on the same second dielectric substrate 2; one end of the antenna 5 is connected with the feeding point 4, and the other end is connected with the floor 3 arranged at the bottom of the first dielectric substrate 1 of the terminal.
In other words, the terminal antenna may be a component of the antenna in the terminal, and other antenna modules may be disposed at other positions on the terminal, which is not limited in this embodiment.
Each antenna in the terminal antenna has one end connected to the feeding point 4 provided by the terminal and the other end grounded, and the part between the two ends is the antenna body. The feeding point 4 can be realized by providing a through hole at the bottom of the floor 3 and the first dielectric substrate 1 and then connecting to feeding.
In some embodiments, the second dielectric substrate 2 is disposed on two opposite long sides of the first dielectric substrate 1. The long side of the first dielectric substrate 1 has a large space, and a sufficient space can be left when the antenna 5 is placed. The second dielectric substrate 2 is disposed on two opposite long sides of the first dielectric substrate 1, and the disposing space on the second dielectric substrate 2 is also large. Of course, it may be disposed on two opposite short sides of the first dielectric substrate 1.
In some embodiments, the N antennas 5 comprise 4 identical monopole antennas 5, and the ends connected to the feed point 4 of the two monopole antennas 5 located on the same second dielectric substrate 2 are located at the distal ends of the two monopole antennas 5.
In some embodiments, the radiating portion of the monopole antenna 5 is disposed on the first dielectric substrate 1 and the second dielectric substrate 2 at least simultaneously. By arranging the radiation part of the antenna 5 on the first dielectric substrate 1 and the second dielectric substrate 2, the actual length of the antenna 5 can be increased as much as possible in a limited space, thereby providing possibility for improving signal quality.
In some embodiments, the radiating portion of the monopole antenna 5 is printed directly on the first and second dielectric substrates 1, 2.
In some embodiments, the radiating portion and the feed portion of the monopole antenna 5 are integrally formed.
In some embodiments, the decoupling element is located next to the antenna 5 on both sides, and the antenna 5 couples to the decoupling element to generate an induced current, which introduces a low frequency resonance point. The arrangement of the decoupling unit enables the isolation between the two antenna 5 units to be larger than 14.5dB, meanwhile, due to the fact that the antenna 5 units which are close to each other at two sides of the decoupling unit generate induced current for coupling of the decoupling unit, a resonance point is introduced at low frequency, resonance of a low frequency band (2.39-2.72GHz) is achieved, double-frequency operation is achieved, and the isolation in the low frequency band is larger than 14 dB.
In some embodiments, the decoupling unit includes a metal patch located on the upper surface of the first dielectric substrate 1, and two bent metal strips connected to the metal patch and having axial symmetry based on the center of the metal patch; the metal patch is connected with the floor 3; each bent metal strip extends from the middle of the metal patch to the adjacent antenna 5 and extends back to the middle of the metal patch to be connected with the floor 3.
In some embodiments, the portions of the bent metal strip, each of which is close to the adjacent antenna 5, are located on the lower surface of the first dielectric substrate 1.
The present embodiment provides a terminal antenna, where the terminal antenna includes N antennas, each antenna is symmetrically disposed on two second dielectric substrates of a terminal, and the two second dielectric substrates are respectively disposed on two opposite sides of a first dielectric substrate and are perpendicular to the first dielectric substrate; each antenna group is axisymmetrical based on a central axis of the first medium substrate in the horizontal and vertical directions; in each antenna, a decoupling unit is arranged between the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with the floor arranged at the bottom of the first dielectric substrate of the terminal. Therefore, through the arrangement of the plurality of antennas, the strength of the antennas is guaranteed, the decoupling units arranged between the antennas guarantee the isolation between the antennas, and the use experience of the antennas is improved.
Example two
Specifically, in the present embodiment, a coaxial feed type MIMO antenna unit is adopted, the size of the MIMO antenna unit of a folded monopole is small, the distance between the antenna units is reduced, meanwhile, a decoupling structure is loaded between the MIMO antenna units, so that the effect of improving the antenna isolation is achieved, and the decoupling structure introduces a resonance point at a low frequency, so that the antenna realizes dual-frequency operation, the overall structure diagram of the antenna is as shown in fig. 1, the size of the first dielectric substrate 1 is 124mm × 74mm × 0.8mm, the second dielectric substrate 2 is located at the side edges of the first dielectric substrate 1 and respectively arranged on two long edges of the first dielectric substrate 1, the long edge of the second dielectric substrate 2 is connected with the long edge of the first dielectric substrate 1, and the two long edges are in a vertical relationship, the size of the second dielectric substrate 2 is 124mm × 6mm × 0.8.8 mm, the size of the metal floor 3 on the lower surface of the first dielectric substrate 1 is 124mm × 66mm, the radius of the second dielectric substrate is 0.6mm, and the radius of the inner core of the coaxial feed point is 0.6mm printed on the second dielectric substrate 2, and the second dielectric substrate is connected with a coaxial feed point 396 mm.
In order to reduce the space occupied by the antenna unit on the first dielectric substrate 1, the folded monopole antenna is adopted as a MIMO antenna unit, the isolation between the units is indirectly reduced by reducing the size of the unit, the 3.29 GHz-3.62 GHz can be covered under the condition of the self-reflection coefficient Sii < -6dB, and the absolute bandwidth can reach 330 MHz. The minimum reflection coefficient of the external four units in the working frequency band is-8.1 dB, the minimum reflection coefficient of the external four units in the working frequency band reaches more than-11.1 dB, and the matching performance of the antenna units is good.
As shown in fig. 2, the structure of an antenna unit 5 of a MIMO antenna suitable for a terminal is shown, where the antenna unit 5 is formed by connecting a first meandering metal strip 51 printed on an upper surface of a first dielectric substrate and a second meandering metal strip 52 and a metal strip 53 printed on an inner side wall of a second dielectric substrate 2, and the first meandering metal strip 51 is formed by splicing three metal patches with sizes of 0.5mmx1.5mm, 0.5mmx1.6mm, and 0.5mmx1mm, respectively; the second meandering metal strip 52 is formed by splicing five metal patches having the sizes of 0.5mmx3mm, 0.4mmx2.5mm, 0.5mmx3mm, 0.2mmx0.7mm and 0.8mmx5.2mm, respectively, and the metal patch 53 is a rectangular metal patch having the size of 1.2mmx 3.3mm. The antenna unit has compact structure and smaller size, and is suitable for mobile terminal antenna design.
As shown in fig. 3, which is a structural diagram of a decoupling structure 6 of a MIMO antenna suitable for a terminal, the decoupling unit 6 is composed of a second metal patch 61 and three meandering metal lines, the second metal patch 61 is connected to a metal floor 3 on the lower surface of a first dielectric substrate 1 through two third meandering metal lines 62 and a fourth meandering metal line 63, the second metal patch 61 is a rectangular metal patch with a size of 31mmx1 mm; the third meandering metal wire 62 is formed by splicing seven metal patches of which the sizes are 2.8mmx0.3mm, 0.8mmx0.3mm, 15.4mmx0.3mm, 1.5mmx0.5mm, 15.4mmx0.3mm and 2.36mmx0.3mm respectively; the fourth meandering metal wire 63 is formed by splicing three metal patches of which the sizes are 2.8mmx0.3mm, 0.8mmx0.3mm, and 4mmx0.3mm, respectively, and the decoupling unit 6 can effectively suppress coupling between adjacent ports.
The sizes of the various structures related to this embodiment are all an implementation manner, and such a size structure is not necessarily adopted in an actual implementation process, and a person skilled in the art may set corresponding sizes in the face of different terminal sizes and different signal strength requirements, which is not described herein again.
The present embodiment further provides a terminal, which includes a terminal body and the terminal antenna in the foregoing embodiments, where the terminal body includes at least a first dielectric substrate, a second dielectric substrate, a feeding point, and a floor.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, may be implemented in computer program code executable by a computing device, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A terminal antenna comprises N antennas, wherein each antenna is symmetrically arranged on two second dielectric substrates of a terminal, and the two second dielectric substrates are respectively arranged on two opposite side edges of a first dielectric substrate and are perpendicular to the first dielectric substrate; each antenna group is axisymmetrical based on a central axis of the first medium substrate in the horizontal and vertical directions; in each antenna, a decoupling unit is arranged between the antennas arranged on the same second dielectric substrate; one end of the antenna is connected with the feed point, and the other end of the antenna is connected with the floor arranged at the bottom of the first dielectric substrate of the terminal.
2. The terminal antenna of claim 1, wherein the second dielectric substrate is disposed on two opposing long sides of the first dielectric substrate.
3. The terminal antenna according to claim 2, wherein the N antennas include 4 identical monopole antennas, and of the two monopole antennas located on the same second dielectric substrate, an end connected to the feed point is located at a distal end of the two monopole antennas.
4. The terminal antenna according to claim 1, wherein the radiating portion of the monopole antenna is disposed on at least the first dielectric substrate and the second dielectric substrate simultaneously.
5. The terminal antenna of claim 4, wherein the radiating portion of the monopole antenna is printed directly on the first and second dielectric substrates.
6. The terminal antenna according to claim 5, wherein the radiation portion and the feed portion of the monopole antenna are integrally formed.
7. The terminal antenna as in any of claims 1-6, wherein said decoupling element is flanked by said antenna, said antenna coupling said decoupling element to induce an inductive current that induces a low frequency resonance point.
8. The terminal antenna according to claim 7, wherein the decoupling unit comprises a metal patch located on the upper surface of the first dielectric substrate, and two bent metal strips connected to the metal patch and having axial symmetry based on the center of the metal patch; the metal patch is connected with the floor; each bent metal strip extends from the middle of the metal patch to the adjacent antenna, extends back to the middle of the metal patch and is connected with the floor.
9. The terminal antenna according to claim 8, wherein the bent metal strips are located at the lower surface of the first dielectric substrate at portions thereof respectively adjacent to adjacent antennas.
10. A terminal, characterized in that the terminal comprises a terminal body and a terminal antenna according to any of claims 1-9, the terminal body comprising at least the first dielectric substrate, the second dielectric substrate, a feeding point and a floor.
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CN201910024267.7A CN111430889B (en) | 2019-01-10 | 2019-01-10 | Terminal antenna and terminal |
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CN201910024267.7A CN111430889B (en) | 2019-01-10 | 2019-01-10 | Terminal antenna and terminal |
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CN111430889B CN111430889B (en) | 2023-06-16 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112635983A (en) * | 2020-12-11 | 2021-04-09 | 西安电子科技大学 | Dual-band eight-port MIMO terminal antenna based on radiator multiplexing technology |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN112635983A (en) * | 2020-12-11 | 2021-04-09 | 西安电子科技大学 | Dual-band eight-port MIMO terminal antenna based on radiator multiplexing technology |
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