CN114243277A - Reconfigurable antenna - Google Patents
Reconfigurable antenna Download PDFInfo
- Publication number
- CN114243277A CN114243277A CN202111451621.8A CN202111451621A CN114243277A CN 114243277 A CN114243277 A CN 114243277A CN 202111451621 A CN202111451621 A CN 202111451621A CN 114243277 A CN114243277 A CN 114243277A
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- antennas
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- reconfigurable antenna
- polarization
- antenna
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- 230000010287 polarization Effects 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 29
- 238000010168 coupling process Methods 0.000 claims abstract description 29
- 238000005859 coupling reaction Methods 0.000 claims abstract description 29
- 230000005855 radiation Effects 0.000 claims abstract description 11
- 230000005404 monopole Effects 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Classifications
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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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a reconfigurable antenna, which realizes a reconfigurable antenna scheme through a coupling feed network, a power division module and three different sub-antennas in different directions, and has the advantages of simple structure and strong portability; the polarization directions of the three sub-antennas are mutually orthogonal through the three mutually perpendicular monopole antennas, and various polarization rotations can be applied and implemented through the spatial polarization reconstruction of the three orthogonal polarized antennas, and the problem of polarization mismatching is reduced; the radiation direction and the polarization direction of the reconfigurable antenna are changed by changing the feed amplitude of the three sub-antennas, so that the reconstruction of the radiation direction and the polarization direction of the reconfigurable antenna is realized.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a reconfigurable antenna.
Background
With the development of communication technology, various user demands place higher demands on wireless communication systems. The traditional single-function antenna restricts the improvement of the system performance and cannot meet the user requirements. The reconfigurable antenna aims to change certain parameters of the antenna, so that the antenna can be reconfigured in real time according to actual requirements.
Reconfigurable antennas proposed in the prior art can be classified into frequency reconfigurable, directional diagram reconfigurable, polarization reconfigurable and the like according to functions. However, the reconfigurable antenna provided by the prior art has a complex structure and is not strong in portability.
Disclosure of Invention
In order to solve the problems, the invention provides a reconfigurable antenna which is realized by three sub-antennas in different directions, and has the advantages of simple structure and strong portability.
The embodiment of the invention provides a reconfigurable antenna, which comprises a coupling feed network, a power dividing module and three sub-antennas, wherein the directions of the three sub-antennas are different;
the input end of the power dividing module is used for connecting a transceiving link of the reconfigurable antenna;
and the three output ends of the power dividing module are respectively connected with the three sub-antennas through three feed circuits of a coupling feed network.
As an improvement of the above scheme, the power dividing module includes a power divider, configured to divide the radio frequency signal transmitted by the transceiving link into three power dividing signals with the same power.
Preferably, all the three sub-antennas are monopole antennas.
In a preferred embodiment, any one of the three sub-antennas is perpendicular to a plane formed by the other two sub-antennas.
Preferably, the coupling coefficient of the coupling feed network is adjustable;
the reconfigurable antenna changes the feed amplitude of the three sub-antennas by adjusting the coupling coefficient of the three feeder circuits of the coupling feed network so as to change the radiation direction and the polarization direction of the reconfigurable antenna.
Compared with the prior art, the reconfigurable antenna provided by the invention has the advantages that the reconfigurable antenna scheme is realized through the coupling feed network, the power division module and the sub-antennas with different directions, the antenna structure is simple, and the portability is strong; the polarization directions of the three sub-antennas are mutually orthogonal through the three mutually perpendicular monopole antennas, and various polarization rotations can be applied and implemented through the spatial polarization reconstruction of the three orthogonal polarized antennas, and the problem of polarization mismatching is reduced; the radiation direction and the polarization direction of the reconfigurable antenna are changed by changing the feed amplitude of the three sub-antennas, so that the reconstruction of the radiation direction and the polarization direction of the reconfigurable antenna is realized.
Drawings
Fig. 1 is a schematic structural diagram of a reconfigurable antenna provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of three sub-antennas according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, which is a schematic structural diagram of a reconfigurable antenna provided in an embodiment of the present invention, the reconfigurable antenna includes a coupling feed network, a power division module, and three sub-antennas, and directions of the three sub-antennas are different;
the input end of the power dividing module is used for connecting a transceiving link of the reconfigurable antenna;
and the three output ends of the power dividing module are respectively connected with the three sub-antennas through three feed circuits of a coupling feed network.
In a specific implementation of this embodiment, the input end of the power dividing module is used to connect the transceiving link, divide the radio frequency signals output by the transceiving link into three radio frequency signals, output the three radio frequency signals to the coupling feed network, and output the three radio frequency signals to the three sub-antennas through the three coupling feed lines;
adjusting the radiation direction of the signals output by the three sub-antennas by adjusting the strength of the radio frequency signal power output to the three sub-antennas through the power division network;
the reconfiguration of the antenna frequency is realized through the frequency control of the output radio frequency signal;
various polarization rotations can be performed by three antennas in different directions, and the polarization direction can be changed.
The power distribution module and the coupling feed network are connected with the sub-antennas in three different directions, so that the reconfigurability of the antenna is realized, the antenna is simple in structure and high in portability, and the antenna can be applied to a plurality of communication products.
In another embodiment of the present invention, the power dividing module includes a power divider, configured to divide the radio frequency signal transmitted by the transceiving link into three power dividing signals with the same power.
In this embodiment, the power dividing module is specifically a power divider, and the power divider can divide a radio frequency signal input to the power dividing module by the transceiver link into three power dividing signals with the same power, and output the three power dividing signals to the three sub-antennas through three coupling feed lines respectively; the three sub-antennas respectively transmit three paths of power division signals, and the three paths of power division signals are combined into one path of radio frequency signal to be output;
the radio frequency signal is divided into three paths of equal-power signals through the power division module, so that the reconstruction of the three sub-antennas is facilitated.
In another embodiment of the present invention, all of the three sub-antennas are monopole antennas.
In the specific implementation of this embodiment, the three sub-antennas are all monopole antennas, and the three sub-antennas are vertical antennas with a quarter wavelength;
through the superposition of the three sub-antennas, the monopole antenna with different polarization directions can realize polarization rotation in different directions, realize reconfiguration of the polarization directions of the antenna, reduce the problem of mutual interference of the polarization directions of different antennas and facilitate the reconfiguration of the polarization directions.
In another embodiment of the present invention, any one of the three sub-antennas is perpendicular to a plane formed by the other two sub-antennas.
In the specific implementation of this embodiment, refer to fig. 2, which is a schematic structural diagram of three sub-antennas provided in this embodiment of the present invention;
the direction of the sub-antenna 1 is the x-axis direction of a coordinate system o-xyz, the direction of the sub-antenna 2 is the y-axis direction of the coordinate system o-xyz, and the direction of the sub-antenna 3 is the z-axis direction of the coordinate system o-xyz;
or, the equation f of the straight line in the direction of the sub-antenna 11Comprises the following steps: 0 ═ c x y + c x z; equation f for the straight line in the direction of the sub-antenna 22Comprises the following steps: 0 ═ b x + b ═ z; equation f of the straight line in the direction of the sub-antenna 33Comprises the following steps: 0 ═ a x + a ═ y, the three sub-antennas are orthogonal to each other;
calculating the rank of an antenna space matrix formed by the three sub-antennas to be 3, and showing that the three sub-antennas can reconstruct a three-dimensional space;
the polarization directions of the three sub-antennas are mutually orthogonal through the three mutually perpendicular monopole antennas, and various polarization rotations can be applied and implemented through the spatial polarization reconstruction of the three orthogonal polarized antennas, so that the problem of polarization mismatch is reduced.
In yet another embodiment provided by the present invention, the coupling coefficient of the coupling feed network is adjustable;
the reconfigurable antenna changes the feed amplitude of the three sub-antennas by adjusting the coupling coefficient of the three feeder circuits of the coupling feed network so as to change the radiation direction and the polarization direction of the reconfigurable antenna.
In the specific implementation of this embodiment, the coupling coefficients of the three coupling feed lines of the coupling feed network are adjustable;
the feed amplitude of the three sub-antennas is changed by adjusting the coupling coefficient of the coupling feed circuit output to the three sub-antennas, so that the radiation direction and the polarization direction of the reconfigurable antenna are changed, and the reconstruction of the radiation direction and the polarization direction of the reconfigurable antenna is realized.
The reconfigurable antenna is suitable for placing antennas in equipment such as a household WIFI router, can effectively solve the uncertainty of polarization after multiple radiation in an indoor environment, and can also solve the requirement of a relatively complex antenna directional diagram in the indoor environment.
It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (5)
1. A reconfigurable antenna is characterized by comprising a coupling feed network, a power dividing module and three sub-antennas, wherein the directions of the three sub-antennas are different;
the input end of the power dividing module is used for connecting a transceiving link of the reconfigurable antenna;
and the three output ends of the power dividing module are respectively connected with the three sub-antennas through three feed circuits of a coupling feed network.
2. The reconfigurable antenna of claim 1, wherein the power division module comprises a power divider configured to divide the radio frequency signal transmitted by the transceiving link into three power division signals with the same power.
3. The reconfigurable antenna of claim 1, wherein the three sub-antennas are all monopole antennas.
4. The reconfigurable antenna of claim 1, wherein any one of the three sub-antennas is perpendicular to a plane formed by the other two sub-antennas.
5. The reconfigurable antenna of claim 1, wherein a coupling coefficient of the coupling feed network is adjustable;
the reconfigurable antenna changes the feed amplitude of the three sub-antennas by adjusting the coupling coefficient of the three feeder circuits of the coupling feed network so as to change the radiation direction and the polarization direction of the reconfigurable antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451621.8A CN114243277A (en) | 2021-11-30 | 2021-11-30 | Reconfigurable antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451621.8A CN114243277A (en) | 2021-11-30 | 2021-11-30 | Reconfigurable antenna |
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| Publication Number | Publication Date |
|---|---|
| CN114243277A true CN114243277A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111451621.8A Pending CN114243277A (en) | 2021-11-30 | 2021-11-30 | Reconfigurable antenna |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009277A (en) * | 2013-02-21 | 2014-08-27 | 中国移动通信集团设计院有限公司 | Antenna device and antenna array |
| CN208240873U (en) * | 2018-05-04 | 2018-12-14 | 南京航空航天大学 | A kind of compact Circular polarized omni-directional reconfigurable antenna working in BDS-1 S |
| CN208507942U (en) * | 2018-05-11 | 2019-02-15 | 广东通宇通讯股份有限公司 | A kind of ultra wide band horizontally polarized omnidirectional antenna oscillator |
| CN111490357A (en) * | 2020-05-28 | 2020-08-04 | 广东小天才科技有限公司 | Circularly polarized positioning antenna device and wearable equipment |
-
2021
- 2021-11-30 CN CN202111451621.8A patent/CN114243277A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009277A (en) * | 2013-02-21 | 2014-08-27 | 中国移动通信集团设计院有限公司 | Antenna device and antenna array |
| CN208240873U (en) * | 2018-05-04 | 2018-12-14 | 南京航空航天大学 | A kind of compact Circular polarized omni-directional reconfigurable antenna working in BDS-1 S |
| CN208507942U (en) * | 2018-05-11 | 2019-02-15 | 广东通宇通讯股份有限公司 | A kind of ultra wide band horizontally polarized omnidirectional antenna oscillator |
| CN111490357A (en) * | 2020-05-28 | 2020-08-04 | 广东小天才科技有限公司 | Circularly polarized positioning antenna device and wearable equipment |
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