CN108808228B - Antenna system and electronic equipment - Google Patents
Antenna system and electronic equipment Download PDFInfo
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- CN108808228B CN108808228B CN201810965818.5A CN201810965818A CN108808228B CN 108808228 B CN108808228 B CN 108808228B CN 201810965818 A CN201810965818 A CN 201810965818A CN 108808228 B CN108808228 B CN 108808228B
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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
- H01Q1/50—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
- 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
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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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
- H01Q5/10—Resonant antennas
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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
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
Abstract
The invention discloses an antenna system and an electronic device, wherein the antenna system at least comprises: a first antenna element, a second antenna element, and a conductor; the first antenna element includes: the first radiator and the first feed source; the first radiator comprises a first connecting end and a first free end; the first end of the first feed source is connected with the first connection end, and the second end of the first feed source is grounded; the second antenna unit includes: a second radiator and a second feed source; the second radiator comprises a second connecting end and a second free end, the first end of the second feed source is connected with the second connecting end, and the second end of the second feed source is grounded; the first radiator and the second radiator are connected through the conductor. The invention can improve the isolation between the antenna units, thereby improving the antenna performance of the antenna system.
Description
Technical Field
The embodiment of the invention relates to the technical field of electronic products, in particular to an antenna system and an electronic equipment terminal.
Background
In recent years, the demand for faster data transmission rate and larger transmission capacity of wireless communication is more and more urgent, and the demand for spectrum resources is increased suddenly, resulting in further expansion of the contradiction between supply and demand of spectrum resources. How to sufficiently and efficiently improve the utilization rate of the wireless spectrum resources has become the core of the development of wireless communication technology.
The Multiple Input Multiple Output (MIMO) technology is to use Multiple transmitting antennas and Multiple receiving antennas at the transmitting end and the receiving end, respectively, and to perform signal processing by using a space-time processing technology, so that the capacity and the spectrum utilization rate of a communication system can be increased by Multiple times without increasing bandwidth, and the system can transmit data at a higher rate in a limited frequency band. Meanwhile, the accuracy of the channel can be enhanced by utilizing the spatial multiplexing gain and the spatial diversity gain of the MIMO technology, and the error rate is reduced. Therefore, MIMO technology is regarded as a focus technology of future development of wireless communication, and is a hot point of research.
In the design of antennas of electronic devices such as mobile phones, the challenges of antenna design become larger and larger due to the trend of pursuing light, thin, portable, attractive, fashionable and high-speed overall machines, and the antennas of electronic devices are promoted to develop towards miniaturization, multiple frequency bands and wide frequency bands. A plurality of antennas are designed in a limited space, the coupling of the antennas is strengthened along with the increase of the number of the antennas or the approach of the distance of the antenna units, so that the isolation between the antennas is seriously deteriorated, the antenna performance of the antenna units is seriously influenced, and the universal application of the MIMO technology in electronic equipment is limited.
Disclosure of Invention
The embodiment of the invention provides an antenna system and electronic equipment, and aims to solve the problem that in the prior art, when a plurality of antennas are designed in a limited space, the performance of the antennas is reduced.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an antenna system, which at least includes: a first antenna element, a second antenna element, and a conductor;
the first antenna element includes: the first radiator and the first feed source; the first radiator comprises a first connecting end and a first free end; the first end of the first feed source is connected with the first connection end, and the second end of the first feed source is grounded;
the second antenna unit includes: a second radiator and a second feed source; the second radiator comprises a second connecting end and a second free end, the first end of the second feed source is connected with the second connecting end, and the second end of the second feed source is grounded;
the first radiator and the second radiator are connected through the conductor.
In a second aspect, the embodiment of the present invention further provides an electronic device, including the antenna system as described above.
In this way, in the above aspect of the present invention, the first radiator of the first antenna element and the second radiator of the second antenna element are connected by one conductor. Therefore, the current of the first antenna unit and the current of the second antenna unit respectively have a part of current flowing through the conductor, and the current direction of the first antenna unit flowing through the conductor is opposite to the current direction of the second antenna unit flowing through the conductor, so that the current can be neutralized and offset, the coupling between the antenna units is prevented from being strengthened due to the close distance between the antenna units, the isolation of the antenna is reduced, the isolation between the first antenna unit and the second antenna unit is improved, and the antenna performance of the antenna unit is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 shows one of the schematic views of an antenna system according to an embodiment of the invention;
fig. 2 shows a second schematic diagram of an antenna system according to an embodiment of the invention;
fig. 3 shows a third schematic diagram of an antenna system according to an embodiment of the invention;
fig. 4 shows a fourth schematic diagram of an antenna system according to an embodiment of the invention;
fig. 5 shows a fifth schematic diagram of an antenna system according to an embodiment of the invention;
fig. 6 shows a sixth schematic diagram of an antenna system according to an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides an antenna system, including: at least two antenna elements and at least one conductor 1.
Wherein each of the antenna units includes: a radiator and a feed source (including a wireless transceiver, a radio frequency front end circuit and a matching circuit of an antenna); the radiator is provided with a connecting end and a free end; the first end of the feed source is connected with the connecting end of the radiating body, and the second end of the feed source is grounded.
Specifically, the at least two antenna units at least include: a first antenna element 2 and a second antenna element 3.
The first antenna element 2 includes: a first radiator 22 and a first feed 21; the first radiator 22 includes a first connection end 221 and a first free end 222; the first end of the first feed 21 is connected to the first connection end 221, and the second end of the first feed 21 is grounded.
The second antenna unit 3 includes: a second radiator 32 and a second feed 31; the second radiator 32 includes a second connection end 321 and a second free end 322, the first end of the second feed 31 is connected to the second connection end 321, and the second end of the second feed 31 is grounded.
The first radiator 22 of the first antenna unit 2 and the second radiator 32 of the second antenna unit 3 of the at least two antenna units are connected through the conductor 1.
In particular, when the antenna structure is applied to an electronic device, the second end of the feed of each antenna unit is connected to the system ground 4, where the system ground 4 may be a housing of the electronic device. It is of course also possible to introduce a grounding point in the electronic device additionally and to connect the feed of each antenna element to said grounding point. The conductive body 1 may be a metal strip.
In this embodiment, when the distance between the first antenna unit 2 and the second antenna unit 3 is smaller than the preset value, in order to avoid that the proximity of the distance between the first antenna unit 2 and the second antenna unit 3 causes the coupling between the first antenna unit 2 and the second antenna unit 3 to be strengthened, and reduce the isolation of the antenna, the first radiator 22 of the first antenna unit 2 is connected to the second radiator 32 of the second antenna unit 3 through one conductor 1. In this way, the current of the first antenna element 2 and the current of the second antenna element 3 respectively have a part flowing through the conductor 1, and because the direction of the current flowing through the conductor 1 of the first antenna element 2 is opposite to the direction of the current flowing through the conductor of the second antenna element 3, a part of the current can be neutralized and offset, so as to improve the isolation between the first antenna element 2 and the second antenna element 3, and further improve the antenna performance of the antenna system, such as: impedance bandwidth, radiation pattern, radiation efficiency, envelope correlation coefficient (ECC for short), and the like, and is favorable for improving communication quality.
It should be noted that the preset value is a coupling distance between the first antenna unit 2 and the second antenna unit 3, and this distance may be different for antenna units operating in different frequency bands or different antenna types.
Further, in order to ensure the antenna performance of the first antenna unit 2 and the second antenna unit 3, when the first antenna unit 2 and the second antenna unit 3 are connected to the conductor 1, respectively, one end of the conductor 1 is connected to a non-first free end of the first radiator 22, that is, one end of the conductor 1 is connected to a first middle portion or a first connection end 221 of the first radiator 22, where the first middle portion is located between the first connection end 221 and the first free end 222; the other end of the conductor 1 is connected to the non-second free end of the second radiator 32, that is, the other end of the conductor 1 is connected to the second middle portion or the second connection end 321 of the second radiator 32; wherein said second intermediate portion is located between a second connection end 321 and said second free end 322.
Specifically, the following connection modes may be included between the first antenna element 2 and the second antenna element 3 and the conductor 1:
in the first mode, the first end of the conductor 1 is connected to the first connection end 221 of the first radiator 22 of the first antenna unit 2; the second end of the conductor 1 is connected to the second connection terminal 321 of the second radiator 32 of the second antenna element 3.
In the second mode, the first end of the conductor 1 is connected to the first connection end 221 of the first radiator 22 of the first antenna unit 2; the second end of the conductor 1 is connected to the second intermediate portion of the second radiator 32 of the second antenna element 3.
In a third mode, the first end of the conductor 1 is connected to the first middle portion of the first radiator 22 of the first antenna element 2; the second end of the conductor 1 is connected to the second intermediate portion of the second radiator 32 of the second antenna element 3.
In a fourth mode, the first end of the conductor 1 is connected to the first middle portion of the first radiator 22 of the first antenna element 2; the second end of the conductor 1 is connected to the second connection terminal 321 of the second radiator 32 of the second antenna element 3.
Specifically, the connection positions between the conductor 1 and the first radiator 22 of the first antenna unit 2 and the second radiator 32 of the second antenna unit 3 may be set according to the operating frequency bands of the first antenna unit 2 and the second antenna unit 3, respectively.
An antenna system having three antenna elements is described below:
the first method is as follows: as shown in fig. 2, the three antenna elements include: the antenna comprises a first antenna unit 2, a second antenna unit 3 and a third antenna unit 5, wherein the first antenna unit 2, the second antenna unit 3 and the third antenna unit 5 are sequentially arranged in a straight line.
Wherein the first antenna element 2 comprises: a first radiator 22 and a first feed 21; the first radiator 22 includes a first connection end 221 and a first free end 222; the first end of the first feed 21 is connected to the first connection end 221, and the second end of the first feed 21 is grounded.
The second antenna unit 3 includes: a second radiator 32 and a second feed 31; the second radiator 32 includes a second connection end 321 and a second free end 322, the first end of the second feed 31 is connected to the second connection end 321, and the second end of the second feed 31 is grounded.
The third antenna unit 5 includes: a third radiator 52 and a third feed 51. The third radiator 52 includes a third free end and a third connected end; a first end of the third feed 51 is connected to the third connection end, and a second end of the third feed 51 is grounded.
Wherein, the first radiator 22 of the first antenna unit 2 is connected with the second radiator 32 of the second antenna unit 3 through the first conductor 11; the second radiator 32 of the second antenna element 3 and the third radiator 52 of the third antenna element 5 are connected to each other by the second conductor 12.
Further, in order to ensure the antenna performance of the first antenna unit 2 and the second antenna unit 3, when the first antenna unit 2 and the second antenna unit 3 are connected to the first conductor 11, respectively, one end of the first conductor 11 is connected to the non-first free end of the first radiator 22, that is, one end of the first conductor 11 is connected to the first middle portion or the first connection end 221 of the first radiator 22; the other end of the first conductor 11 is connected to the non-second free end of the second radiator 32, that is, the other end of the first conductor 11 is connected to the second middle portion or the second connection end 321 of the second radiator 32.
Similarly, in order to ensure the antenna performance of the second antenna unit 3 and the third antenna unit 5, when the second antenna unit 3 and the third antenna unit 5 are connected to the second conductor 12, respectively, one end of the second conductor 12 is connected to the non-second free end of the second radiator 32, that is, one end of the second conductor 12 is connected to the second middle portion or the second connection end 221 of the second radiator 22; the other end of the second conductor 12 is connected to a non-third free end of the third radiator 52, that is, the other end of the second conductor 12 is connected to a third middle portion or a third connection end of the third radiator 52, wherein the third middle portion is located between the third free end and the third connection end. The specific connection relationship between each antenna unit and the conductor is as described in the above embodiments, and is not described herein again.
The second method comprises the following steps: as shown in fig. 3, the three antenna elements include: the antenna comprises a first antenna unit 2, a second antenna unit 3 and a third antenna unit 5, wherein the first antenna unit 2, the second antenna unit 3 and the third antenna unit 5 are arranged in a triangular shape.
Wherein the first antenna element 2 comprises: a first radiator 22 and a first feed 21; the first radiator 22 includes a first connection end 221 and a first free end 222; the first end of the first feed 21 is connected to the first connection end 221, and the second end of the first feed 21 is grounded.
The second antenna unit 3 includes: a second radiator 32 and a second feed 31; the second radiator 32 includes a second connection end 321 and a second free end 322, the first end of the second feed 31 is connected to the second connection end 321, and the second end of the second feed 31 is grounded.
The third antenna unit 5 includes: a third radiator 52 and a third feed 51. The third radiator comprises a third free end and a third connecting end; a first end of the third feed 51 is connected to the third connection end, and a second end of the third feed 51 is grounded.
Wherein, the first radiator 22 of the first antenna unit 2 is connected with the second radiator 32 of the second antenna unit 3 through the first conductor 11; the second radiator 32 of the second antenna unit 3 and the third radiator 52 of the third antenna unit 5 are connected by the second conductor 12; the first radiator 22 of the first antenna element 2 and the third radiator 52 of the third antenna element 5 are connected to each other by the third conductor 13.
Further, in order to ensure the antenna performance of the first antenna unit 2 and the second antenna unit 3, when the first antenna unit 2 and the second antenna unit 3 are connected to the first conductor 11, respectively, one end of the first conductor 11 is connected to the non-first free end of the first radiator 22, that is, one end of the first conductor 11 is connected to the first middle portion or the first connection end 221 of the first radiator 22; the other end of the first conductor 11 is connected to the non-second free end of the second radiator 32, that is, the other end of the first conductor 11 is connected to the second middle portion or the second connection end 321 of the second radiator 32.
Similarly, in order to ensure the antenna performance of the second antenna unit 3 and the third antenna unit 5, when the second antenna unit 3 and the third antenna unit 5 are connected to the second conductor 12, respectively, one end of the second conductor 12 is connected to the non-second free end of the second radiator 32, that is, one end of the second conductor 12 is connected to the second middle portion or the second connection end 221 of the second radiator 22; the other end of the second conductor 12 is connected to a non-third free end of the third radiator 52, i.e., the other end of the second conductor 12 is connected to a third middle portion or a third connection end of the third radiator 52.
Similarly, in order to ensure the antenna performance of the first antenna unit 2 and the third antenna unit 5, when the first antenna unit 2 and the third antenna unit 5 are connected to the third conductor 13, respectively, one end of the third conductor 13 is connected to the non-first free end of the first radiator 22, that is, one end of the third conductor 13 is connected to the first middle portion or the first connection end 221 of the first radiator 22; the other end of the third conductor 13 is connected to a non-third free end of the third radiator 52, that is, the third conductor 13 is connected to a third middle portion or a third connection end of the third radiator 52. The specific connection relationship between each antenna unit and the conductor is as described in the above embodiments, and is not described herein again.
As shown in fig. 4, an embodiment of the present invention further provides an example of an antenna system, where the antenna system includes: at least two antenna elements and at least one conductor 1.
Wherein each of the antenna units includes: a radiator and a feed source; the radiator is provided with a connecting end and a free end; the first end of the feed source is connected with the connecting end of the radiating body, and the second end of the feed source is grounded.
Specifically, the at least two antenna units at least include: a first antenna element 2 and a second antenna element 3.
The first antenna element 2 includes: a first radiator 22 and a first feed 21; the first radiator 22 includes a first connection end 221 and a first free end 222; the first end of the first feed 21 is connected to the first connection end 221, and the second end of the first feed 21 is grounded.
The second antenna unit 3 includes: a second radiator 32 and a second feed 31; the second radiator 32 includes a second connection end 321 and a second free end 322, the first end of the second feed 31 is connected to the second connection end 321, and the second end of the second feed 31 is grounded.
The first radiator 22 of the first antenna unit 2 and the second radiator 32 of the second antenna unit 3 of the at least two antenna units are connected through the conductor 1.
The first end of the first feed 21 of the first antenna unit 2 is connected to the first connection end 221 of the first radiator 22 through the first switch 23.
Specifically, the first switch 23 is a single-pole single-throw switch. When the first switch 23 is closed, the antenna system operates in the MIMO mode; when the first switch 23 is turned off, the antenna system operates in a Single Input Single Output (SISO) mode.
Preferably, the antenna system includes two antenna units, namely a first antenna unit 2 and a second antenna unit 3, and the first end of the first feed 21 of the first antenna unit 2 is connected to the first connection end 221 of the first radiator 22 through the first switch 23. Thus, when the first switch 23 is controlled to be closed, the antenna system operates in the MIMO mode, and the conductor 1 connected between the first antenna element 2 and the second antenna element 3 plays a role in increasing the isolation between the first antenna element 2 and the second antenna element 3; when the first switch 23 is controlled to be turned off, the antenna system works in the SISO mode, and at this time, the radiators formed by the first antenna unit 2 and the second antenna unit 3 and the conductor 1 resonate in a new frequency band, so that the purpose of frequency reconfiguration is achieved.
Further, as shown in fig. 5, an embodiment of the present invention further provides an example of an antenna system, where the antenna system includes: at least two antenna elements and at least one conductor 1.
Wherein each of the antenna units includes: a radiator and a feed source; the radiator is provided with a connecting end and a free end; the first end of the feed source is connected with the connecting end of the radiating body, and the second end of the feed source is grounded.
Specifically, the at least two antenna units at least include: a first antenna element 2 and a second antenna element 3.
The first antenna element 2 includes: a first radiator 22 and a first feed 21; the first radiator 22 includes a first connection end 221 and a first free end 222; the first end of the first feed 21 is connected to the first connection end 221, and the second end of the first feed 21 is grounded.
The second antenna unit 3 includes: a second radiator 32 and a second feed 31; the second radiator 32 includes a second connection end 321 and a second free end 322, the first end of the second feed 31 is connected to the second connection end 321, and the second end of the second feed 31 is grounded.
The first radiator 22 of the first antenna unit 2 and the second radiator 32 of the second antenna unit 3 of the at least two antenna units are connected through one conductor 1.
The first end of the first feed 21 of the first antenna unit 2 is connected to the first connection end 221 of the first radiator 22 through the first switch 23.
The first end of the second feed 31 of the second antenna unit 3 is connected to the second connection end 321 of the second radiator 32 through a second switch 33.
Specifically, the first switch 23 is a single-pole single-throw switch, and the second switch 33 is a single-pole single-throw switch. When one of the first switch 23 and the second switch 33 is closed, the other switches of the first switch 23 and the second switch 33 except for the closed switch are opened, for example: the first switch 23 is open and the second switch 33 is closed; or when the first switch 23 is closed and the second switch 33 is open, the antenna system operates in SISO mode; when the first switch 23 and the second switch 33 are both closed, the antenna system operates in MIMO mode.
The antenna system further comprises a processor, and the processor is respectively connected with the first antenna unit 2 and the second antenna unit 3; the processor is used to control the closing or opening of the first switch 23 and the second switch 33.
Specifically, the processor is configured to control the second switch 33 to be closed when the first switch 23 is opened, or control the second switch 33 to be opened when the first switch 23 is closed, so that the antenna system operates in SISO mode.
The processor is further arranged to control both said first switch 23 and said second switch 33 to be closed, such that the antenna system operates in a MIMO mode.
Preferably, the antenna system includes two antenna units, namely a first antenna unit 2 and a second antenna unit 3, and the first end of the first feed 21 of the first antenna unit 2 is connected to the first connection end 221 of the first radiator 22 through the first switch 23. The first end of the second feed 31 of the second antenna unit 3 is connected to the second connection end 321 of the second radiator 32 through a second switch 33. Thus, when the first switch 23 and the second switch 33 are controlled to be closed, the antenna system operates in the MIMO mode, and the conductor 1 connected between the first antenna element 2 and the second antenna element 3 plays a role in increasing the isolation between the first antenna element 2 and the second antenna element 3; when one of the first switch 23 and the second switch 33 is controlled to be switched off and the other is controlled to be switched on, the antenna system works in a SISO mode, and at the moment, the first antenna unit 2 and the second antenna unit 3 respectively resonate with a radiator formed by the conductor 1 in a new frequency band, so that the purpose of frequency reconstruction is achieved.
Furthermore, the antenna performance (such as impedance bandwidth, radiation pattern, radiation efficiency, ECC, etc.) of the first antenna unit 2 and the second antenna unit 3 can be detected separately, and when the antenna performance of the first antenna unit 2 is better than that of the second antenna unit 3, the first switch 23 can be controlled to be closed and the second switch 33 can be controlled to be opened; when the antenna performance of the second antenna element 3 is better than the antenna performance of the first antenna element 2, the first switch 23 may be controlled to be open and the second switch 33 may be controlled to be closed. Like this, set up in electronic equipment's bottom at first antenna element 2 and second antenna element 3, and be located the electronic equipment width direction respectively under the condition of both sides position, the antenna performance of handheld state about can effectual balance, and then promote user's wireless communication experience.
In addition, when the antenna system works in a SISO mode, namely only one switch is closed, the transceiver and the front-end radio frequency circuit which do not work can be selected to be in a standby mode, the purpose of saving electricity can be achieved, and the cruising ability is effectively improved.
As shown in fig. 6, an embodiment of the present invention further provides an antenna system, where the antenna system includes: at least two antenna elements and at least one conductor 1.
Wherein each of the antenna units includes: a radiator and a feed source; the radiator is provided with a connecting end and a free end; the first end of the feed source is connected with the connecting end of the radiating body, and the second end of the feed source is grounded.
Specifically, the at least two antenna units at least include: a first antenna element 2 and a second antenna element 3.
The first antenna element 2 includes: a first radiator 22 and a first feed 21; the first radiator 22 includes a first connection end 221 and a first free end 222; the first end of the first feed 21 is connected to the first connection end 221, and the second end of the first feed 21 is grounded.
The second antenna unit 3 includes: a second radiator 32 and a second feed 31; the second radiator 32 includes a second connection end 321 and a second free end 322, the first end of the second feed 31 is connected to the second connection end 321, and the second end of the second feed 31 is grounded.
The first radiator 22 of the first antenna unit 2 and the second radiator 32 of the second antenna unit 3 of the at least two antenna units are connected through one conductor 1.
Wherein the conductive body 1 includes: a first connection portion connected to the first radiator 22 of the first antenna element 2, a second connection portion connected to the second radiator 32 of the second antenna element 3, and an intermediate portion between the first connection portion and the second connection portion;
wherein the intermediate portion is provided with a grounding point 101 and is grounded via the grounding point 101.
Specifically, when the antenna system is applied to an electronic device, the grounding point 101 may be connected to the system ground 4, or a grounding terminal may be additionally introduced into the electronic device, and the grounding point 101 is connected to the grounding terminal.
In this embodiment, the isolation between the first antenna element 2 and the second antenna element 3 can be further improved by providing the grounding point 101 at the middle portion of the conductive body 1 and grounding through the grounding point 101, i.e., adding a short-circuit line to the conductive body 1. In addition, due to the introduction of the short-circuit line, the first antenna unit 2 and the second antenna unit 3 generate new modes, so that the modes resonate in different frequency bands. In this way, the position of the grounding point 101 can be chosen to be different, and its impedance can be different, to generate different resonance frequencies, so that the design of the antenna is more flexible and free.
Further, the first end of the first feed 21 of the first antenna unit 2 and the first connection end 221 of the first radiator 22 may be connected through the first switch 23. The first end of the second feed 31 of the second antenna unit 3 is connected to the second connection end 321 of the second radiator 32 through a second switch 33.
Thus, when the first switch 23 and the second switch 33 are controlled to be closed, the antenna system operates in the MIMO mode, and the conductor 1 connected between the first antenna element 2 and the second antenna element 3 plays a role in increasing the isolation between the first antenna element 2 and the second antenna element 3; when one of the first switch 23 and the second switch 33 is controlled to be switched off and the other is controlled to be switched on, the antenna system works in a SISO mode, and at the moment, the first antenna unit 2 and the second antenna unit 3 respectively resonate with a radiator formed by the conductor 1 in a new frequency band, so that the purpose of frequency reconstruction is achieved.
Furthermore, it is also possible to detect the antenna performance of the first antenna element 2 and the second antenna element 3, respectively, and when the antenna performance of the first antenna element 2 is better than the antenna performance of the second antenna element 3, the first switch 23 may be controlled to be closed, and the second switch 33 may be controlled to be opened; when the antenna performance of the second antenna element 3 is better than the antenna performance of the first antenna element 2, the first switch 23 may be controlled to be open and the second switch 33 may be controlled to be closed. Like this, set up in electronic equipment's bottom at first antenna element 2 and second antenna element 3, and be located the electronic equipment width direction respectively under the condition of both sides position, the antenna performance of handheld state about can effectual balance, and then promote user's wireless communication experience.
The embodiment of the invention also provides electronic equipment, which comprises the antenna system.
It should be noted that the electronic device according to the embodiment of the present invention may apply the antenna system described in the above embodiments, and details are not described here.
In the electronic device according to the embodiment of the invention, the first radiator of the first antenna unit and the second radiator of the second antenna unit are connected through the conductor. Therefore, the current of the first antenna unit and the current of the second antenna unit respectively have a part of current flowing through the conductor, and the current direction of the first antenna unit flowing through the conductor is opposite to the current direction of the second antenna unit flowing through the conductor, so that the current can be neutralized and offset, the coupling between the antenna units is prevented from being strengthened due to the close distance between the antenna units, the isolation of the antenna is reduced, the isolation between the first antenna unit and the second antenna unit is improved, and the antenna performance of the antenna unit is improved.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or electronic device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or electronic device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or electronic device that comprises the element.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (9)
1. An antenna system, comprising at least: a first antenna element (2), a second antenna element (3), and a conductor (1);
the first antenna element (2) comprises: a first radiator (22) and a first feed (21); wherein the first radiator (22) comprises a first connection end (221) and a first free end (222); the first end of the first feed source (21) is connected with the first connection end (221), and the second end of the first feed source (21) is grounded;
the second antenna unit (3) comprises: a second radiator (32) and a second feed (31); the second radiator (32) comprises a second connecting end (321) and a second free end (322), the first end of the second feed source (31) is connected with the second connecting end (321), and the second end of the second feed source (31) is grounded;
the first radiator (22) and the second radiator (32) are connected through the conductor (1);
the first end of the first feed source (21) is connected with the first connection end (221) through a first switch (23);
when the first switch (23) is closed, the antenna system operates in a multiple-input multiple-output (MIMO) mode; when the first switch (23) is open, the antenna system operates in a single-input single-output (SISO) mode.
2. The antenna system according to claim 1, characterized in that the distance between the first antenna element (2) and the second antenna element (3) is smaller than a preset value.
3. The antenna system according to claim 1, characterized in that one end of the conductor (1) is connected to a first intermediate portion on the first radiator (22) or to the first connection end (221); wherein the first intermediate portion is located between the first connection end (221) and the first free end (222);
the other end of the conductor (1) is connected with a second middle part on the second radiator (32) or the second connecting end (321); wherein the second intermediate portion is located between the second connection end (321) and the second free end (322).
4. The antenna system according to claim 1, characterized in that the first switch (23) is a single pole single throw switch.
5. An antenna system according to claim 1, characterized in that the connection between the first end of the second feed (31) and the second connection end (321) is via a second switch (33).
6. The antenna system according to claim 5, characterized in that the second switch (33) is a single pole single throw switch.
7. The antenna system of claim 5, further comprising:
a processor connected to the first antenna element (2) and the second antenna element (3), respectively;
the processor is used for controlling the second switch (33) to be closed when the first switch (23) is controlled to be opened; alternatively, the first and second electrodes may be,
when the first switch (23) is controlled to be closed, the second switch (33) is controlled to be opened; alternatively, the first and second electrodes may be,
controlling both the first switch (23) and the second switch (33) to be closed.
8. The antenna system according to claim 5, characterized in that the conductive body (1) comprises: a first connection portion connected to the first radiator (22), a second connection portion connected to the second radiator (32), and an intermediate portion between the first connection portion and the second connection portion;
wherein the intermediate portion is provided with a grounding point (101) and is grounded via the grounding point (101).
9. An electronic device, characterized in that it comprises an antenna system according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810965818.5A CN108808228B (en) | 2018-08-23 | 2018-08-23 | Antenna system and electronic equipment |
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| CN201810965818.5A CN108808228B (en) | 2018-08-23 | 2018-08-23 | Antenna system and electronic equipment |
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| CN108808228A CN108808228A (en) | 2018-11-13 |
| CN108808228B true CN108808228B (en) | 2021-01-22 |
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| CN110911842B (en) * | 2018-09-17 | 2021-05-28 | 青岛海信移动通信技术股份有限公司 | Terminal with radiating body antenna |
| CN112072303B (en) * | 2019-06-11 | 2021-07-06 | 苏州速感智能科技有限公司 | Decoupling network, method and device for installing decoupling network |
| CN111555019B (en) * | 2020-05-20 | 2022-07-12 | 维沃移动通信有限公司 | Electronic device |
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| GB0216060D0 (en) * | 2002-07-11 | 2002-08-21 | Koninkl Philips Electronics Nv | Improvements in or relating to multiple transmission channel wireless communic ation systems |
| JP4983909B2 (en) * | 2007-02-28 | 2012-07-25 | 日本電気株式会社 | Array antenna, radio communication apparatus, and array antenna control method |
| KR101464510B1 (en) * | 2007-10-17 | 2014-11-26 | 삼성전자주식회사 | MIMO antenna apparatus |
| JP5532866B2 (en) * | 2009-11-30 | 2014-06-25 | 船井電機株式会社 | Multi-antenna device and portable device |
| CN102104185A (en) * | 2010-12-01 | 2011-06-22 | 中兴通讯股份有限公司 | Multiple input multiple output (MIMO) array antenna |
| US9444129B2 (en) * | 2011-05-13 | 2016-09-13 | Funai Electric Co., Ltd. | Multi-band compatible multi-antenna device and communication equipment |
| CN203910977U (en) * | 2014-04-11 | 2014-10-29 | 广东欧珀移动通信有限公司 | Mobile phone and antenna thereof |
| CN106025500B (en) * | 2015-03-31 | 2020-05-29 | 韩国电子通信研究院 | Multiple antenna using decoupling network |
| CN205029016U (en) * | 2015-10-14 | 2016-02-10 | 中兴通讯股份有限公司 | Multiple -input multiple -output antenna and electronic equipment |
| CN106571538B (en) * | 2016-10-25 | 2021-01-01 | 瑞声科技(沭阳)有限公司 | Antenna assembly, antenna control method and electronic equipment |
| CN106785372B (en) * | 2017-01-04 | 2019-04-12 | 常熟市泓博通讯技术股份有限公司 | Dual-band antenna radiation pattern control system |
| CN107968252A (en) * | 2017-11-30 | 2018-04-27 | 维沃移动通信有限公司 | A kind of antenna assembly and mobile terminal |
| CN108321534B (en) * | 2018-01-19 | 2021-06-15 | Oppo广东移动通信有限公司 | Antenna assembly, electronic equipment and antenna switching method |
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