CN209045766U - Multi-input multi-output antenna system - Google Patents
Multi-input multi-output antenna system Download PDFInfo
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- CN209045766U CN209045766U CN201821514617.5U CN201821514617U CN209045766U CN 209045766 U CN209045766 U CN 209045766U CN 201821514617 U CN201821514617 U CN 201821514617U CN 209045766 U CN209045766 U CN 209045766U
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Abstract
Multi-input multi-output antenna system, comprising: RF transceiver；Duplexer couples the RF transceiver, to receive the first radiofrequency signal from the RF transceiver or send first radiofrequency signal to the RF transceiver；First antenna unit couples the duplexer to receive or send first radiofrequency signal；Second antenna element, wherein second antenna element is the doubly-fed antenna unit with the first feed side and the second feed side, first feed side of second antenna element couples the RF transceiver, to receive the second radiofrequency signal from the RF transceiver or send second radiofrequency signal to the RF transceiver；And controller, the duplexer is coupled, second feed side of second antenna element is switched to control the duplexer from the first antenna unit.Utilize multi-input multi-output antenna system provided by the utility model, it can be ensured that the normal work of antenna system.
Description
Technical field
The utility model relates generally to antenna system, and more particularly, to multi-input multi-output antenna system
Design.
Background technique
Unless in addition showing method described in this section not herein and being the prior art for claim, and not
The prior art is recognized as because being included in this part.
With the rapid growth of personal radio communication demand, wireless communication system be widely deployed with provide such as voice,
The various communication services such as packet data, broadcast, information receiving.These systems can be can be by sharing available system resource
(such as bandwidth and transmission power etc.) supports the multi-address system of multi-user communication.The example of these multi-address systems includes that code point is more
Location (Code Division Multiple Access, CDMA) system, time division multiple acess (Time Division Multiple
Access, TDMA) system, frequency division multiple access (Frequency Division Multiple Access, FDMA) system, Yi Jizheng
Frequency division multiple access (Orthogonal Frequency Division Multiplexing, the OFDM) system of friendship etc..Wireless multiple access system
System includes the node B (that is, base station) that can be communicated with user equipment (User Equipment, UE).Each UE can be under
Transmission on line link and uplink is communicated with one or more node B.Downlink refer to from node B to
The communication link of UE, and uplink refers to the communication link from UE to node B.Wireless multi-access system can support downlink
And/or multiple-input and multiple-output (Multiple-Input Multiple-Output, the MIMO) transmission in uplink.MIMO skill
Art refers to uses multiple transmitting antennas and receiving antenna in transmitting terminal and receiving end respectively, and signal is made to pass through transmitting terminal and receiving end
Mutiple antennas transmission and reception, so as to improve communication quality.It can make full use of space resources, be realized by mutiple antennas multiple
It is receive more, in the case where not increasing frequency spectrum resource and antenna transmission power, system channel capacity can be increased exponentially.
Therefore, more and more UE are built-in with mimo antenna.Mimo antenna has mutiple antennas unit, to more by this
A antenna element and multiple base stations carry out multiple-input multiple-output.Fig. 1 is that there are four the schematic diagrames of the mobile phone 100 of antenna element for tool.Such as Fig. 1
It is shown, 4 antenna elements 101,102,103 and 104 are provided in mobile phone 100.This four antenna elements are separately positioned on mobile phone
Long side and short side.But antenna element so can bring a problem.Such as user is when hand-held mobile phone 100,
Palm may come close to or in contact with the side for being placed with antenna 101, in this way, which antenna 101 can be covered by palm, thus day
The ability of 101 receiving and transmitting signal of line is lowered.For example, a 8*8MIMO antenna, when two antenna elements in 8 antenna elements
When being blocked, channel throughput reduces by 40%；When four antenna elements in 8 antenna elements are blocked, channel throughput
Reduce by 67%；When six antenna elements in 8 antenna elements are blocked, channel throughput reduces by 80%；When 8 antenna lists
When member is all blocked, channel throughput reduces by 93%.As it can be seen that the influence that antenna element is blocked to UE receiving and transmitting signal is significant, into
And seriously affect user experience.
To solve the above-mentioned problems, two kinds of solutions have been developed at present.Fig. 2 is for solving mimo antenna and being blocked
The schematic diagram of one scheme.As shown in Fig. 2, UE 200 has 2*2MIMO antenna, including antenna element 201 and 202, UE 200 exist
User is in use, its antenna element 201 is blocked by the hand of user, at this point, increasing an antenna element 203, in antenna list
When member 201 is blocked, the transmission of signal is switched to antenna element 203 by antenna element 201.It is well known that UE200 is for example
When for mobile phone, leave for the space of antenna be it is fixed and very small, under fixed space, if mobile phone has had mutiple antennas
Unit, for example, 4*4MIMO antenna, being no longer possible redundant space at this time can increase a new antenna element.Fig. 3 is to solve
The schematic diagram for the alternative plan that mimo antenna is blocked.As shown in figure 3, UE 300 has 4*4MIMO antenna, including antenna element
301,302,303 and 304, antenna element 301 be designed as having a signal feed side and two signal radiation direction 301-1 and
The antenna element of 301-2, although antenna element 301 is blocked by the hand of user when users use, antenna element 301 can will be by
The signal radiation direction 301-1 blocked becomes the signal radiation direction 301-2 not blocked.But there is also limitations for this solution
Property.For example, although there are two different signal radiation directions for the tool of antenna element 301, since antenna element 301 is close to user's
Hand or head, therefore which direction no matter be switched to or can be blocked by user.In another example there is extensive mimo antenna in UE
When, since antenna element is large number of, the signal radiation direction for changing an antenna element influences whether another antenna list
The normal signal transmitting and receiving of member.
It would therefore be highly desirable to propose a kind of design scheme of mimo antenna system to solve the above problems.
Summary of the invention
What following summary of the invention was merely an illustrative, and be not intended to be limited in any way.That is, providing following
Summary of the invention introduces concept, bright spot, benefit and the advantage of described in the utility model novel and creative technology.?
Selection implementation is further described in following detailed description.Therefore, summary of the invention below is not intended to the required guarantor of identification
The essential characteristic of the theme of shield is intended to be used to determine the range of theme claimed.
The utility model provides a kind of multi-input multi-output antenna system, comprising: RF transceiver；Duplexer, coupling
The RF transceiver, to receive the first radiofrequency signal from the RF transceiver or be sent to the RF transceiver
First radiofrequency signal；First antenna unit couples the duplexer to receive or send first radiofrequency signal；
Second antenna element, wherein second antenna element is the doubly-fed antenna list with the first feed side and the second feed side
First feed side of member, second antenna element couples the RF transceiver, comes from radio frequency receipts to receive
It sends out the second radiofrequency signal of device or sends second radiofrequency signal to the RF transceiver；And controller, described in coupling
Duplexer is switched to described the of second antenna element from the first antenna unit to control the duplexer
Two feed sides.
Using multi-input multi-output antenna system provided by the utility model, due to including a doubly-fed antenna unit,
One feed side of the doubly-fed antenna unit is optionally cut by duplexer, to receive or send originally by another
The radiofrequency signal that a antenna element receives or sends, so when the signal transmitting and receiving of another antenna element is obstructed, it is ensured that antenna
The normal work of system.
Detailed description of the invention
Attached drawing is included to provide a further understanding of the present invention, and it is practical new to be incorporated and constitute this
A part of type.Attached drawing instantiates the implementation of the utility model, and with detailed description together for illustrating the utility model
Principle.It should be appreciated that the drawings are not necessarily drawn to scale because some components may be shown as in practical implementation
Size it is disproportionate, clearly to illustrate the concept of the utility model.
Fig. 1 is that there are four the schematic diagrames of the mobile phone 100 of antenna element for tool；
Fig. 2 is the schematic diagram for solving the first scheme that mimo antenna is blocked；
Fig. 3 is the schematic diagram for solving the alternative plan that mimo antenna is blocked；
Fig. 4 is the schematic diagram of the mimo antenna system 400 according to an embodiment of the present invention；
Fig. 5 is the schematic diagram of the doubly-fed antenna unit 500 according to an embodiment of the present invention；
Fig. 6 is the schematic diagram of the mimo antenna system 600 according to an embodiment of the present invention；
Fig. 7 is the schematic diagram of the mimo antenna system 700 according to an embodiment of the present invention；
Fig. 8 is the schematic diagram of the mimo antenna system 800 according to an embodiment of the present invention；
Fig. 9 is the schematic diagram using the mobile phone 900 of mimo antenna system provided by the utility model.
Specific embodiment
The utility model discloses the detailed embodiment of claimed theme and implementations.It will be appreciated, however, that
Disclosed embodiment and implementation is only to the theme claimed that can be embodied in a variety of manners
It illustrates.However, the utility model can be embodied by many different forms, and be not construed as illustrating the utility model
Illustrative embodiments and implementation are limited.On the contrary, these illustrative embodiments and implementation are provided, so that
The description of the utility model is thoroughly and complete, and conveys the scope of the utility model comprehensively to those skilled in the art.Under
In the description in face, it is known that the details of feature and/or technology can be omitted unnecessarily to obscure presented embodiment
And implementation.
The utility model proposes a kind of multi-input multi-output antenna systems comprising at least one doubly-fed antenna unit,
It further include that at least one single feed-in unit or at least another double-fed enter unit, mono-/bis-feed antenna unit is in the feelings being blocked
Under condition, the signal of transmitting-receiving can switch to doubly-fed antenna unit, and the transmitting-receiving of the signal is carried out by doubly-fed antenna unit.
Fig. 4 is the schematic diagram of the mimo antenna system 400 according to an embodiment of the present invention.As shown in figure 4, MIMO days
Linear system system includes RF transceiver 401, duplexer 402, antenna element 403, antenna element 404 and controller 405.Radio frequency is received
Hair device 401 is for receiving and emitting RF signal；Duplexer 402 couples RF transceiver 401, comes from radio-frequency receiving-transmitting to receive
The radiofrequency signal of device 401 sends radiofrequency signal to RF transceiver 401；Antenna element 403 is single feed antenna unit, antenna
Single feed side 403-1 coupling antenna switch 402 of unit 403 is to receive or send radiofrequency signal RF1；Antenna element 404 is
Doubly-fed antenna unit with the first feed side 404-1 and the second feed side 404-2, the first feed side of antenna element 404
404-1 couples RF transceiver 401, to receive radiofrequency signal RF2 from RF transceiver 401 or to RF transceiver
401 send radiofrequency signal RF2.Controller 405 receives sensing signal 406, to judge whether antenna element 403 is blocked, when
When antenna element 403 is blocked, controller 405 controls duplexer 402 and is switched to antenna element 404 by antenna element 403.
In one embodiment, antenna element 403 can be sensed by the sensor being arranged in around antenna element 403 to receive and dispatch
Radiofrequency signal RF1 intensity (such as Rx), when intensity be less than threshold value when, can determine whether that antenna element 403 is blocked.At another
In embodiment, whether have object close, such as passed with infrared ray if can be sensed by the sensor being arranged in around antenna element 403
Sensor senses the close of human body, when have object close to when, can determine whether that antenna element 403 is blocked.
Indicate that the intensity for the radiofrequency signal RF1 that antenna element 403 receives or sends is less than threshold value or indicates that object is close
The sensing signal 406 of antenna element 403 is sent to controller 405, and controller 405 receives sensing signal 406, to control
Duplexer 402 is switched to the second feed side 404-2 of antenna element 404 from single feed side 403-1 of antenna element 403.Such as
This, radiofrequency signal RF1 becomes receiving and dispatching via antenna element 404 from via the transmitting-receiving of antenna element 403, avoids 403 quilt of antenna element
Generated signal throughput is weak when blocking.
In one embodiment, when antenna element 403 works normally, the first feed side 404-1 of antenna element 404 is received
Radiofrequency signal RF2 is sent out, the second feed side 404-2 of antenna element 404 does not receive and dispatch any signal, the conduct at this time of antenna element 404
One single feed antenna cell operation.When antenna element 403 is blocked, the second feed side 404-2 of antenna element 404 will be received
Send out radiofrequency signal RF1, at this time the first feed side 404-1 still can transceiving radio frequency signal RF2, antenna element 404 at this time be used as one
A doubly-fed antenna cell operation.It should be noted that when antenna element 404 is as doubly-fed antenna cell operation, two feedbacks
The frequency for entering the radiofrequency signal of end transmitting-receiving is identical.
In one embodiment, duplexer 402 shown in Fig. 4 is a single-pole double throw (Single Port Double
Terminal, SPDT) switch.
Fig. 5 is the schematic diagram of the doubly-fed antenna unit 500 according to an embodiment of the present invention.As shown in figure 5, double-fed
When entering antenna element 500 as single feed antenna cell operation, the first feed side 500-1 transmitting-receiving frequency of antenna element 500 is
Second feed side 500-2 of the signal 1 of F1, antenna element 500 does not receive and dispatch any signal.Doubly-fed antenna unit 500 is as double
When feed antenna cell operation, the first feed side 500-1 transmitting-receiving frequency of antenna element 500 is the signal 1 of F1, antenna element
500 the second feed side 500-2 transmitting-receiving frequency is the signal 2 of F2, at this point, F1=F2.
Fig. 6 is the schematic diagram of the mimo antenna system 600 according to an embodiment of the present invention.As shown in fig. 6, MIMO days
Linear system system includes RF transceiver 601, duplexer 602, antenna element 603, antenna element 604 and controller 605.Radio frequency is received
Hair device 601 is for receiving and emitting RF signal；Duplexer 602 couples RF transceiver 601, comes from radio-frequency receiving-transmitting to receive
The radiofrequency signal of device 601 sends radiofrequency signal to RF transceiver 601；Antenna element 603 is that have the first feed side 603-1
RF transceiver is coupled with the first feed side 603-1 of the doubly-fed antenna unit of the second feed side 603-2, antenna element 603
601, to receive radiofrequency signal RF3 from RF transceiver 601 or send radiofrequency signal RF3 to RF transceiver 601；It
Line unit 604 is the doubly-fed antenna unit with the first feed side 604-1 and the second feed side 604-2, antenna element 604
First feed side 604-1 couples RF transceiver 601, to receive radiofrequency signal RF2 from RF transceiver 601 or to penetrating
Frequency transceiver 601 sends radiofrequency signal RF2, the second feed side 604-2 coupling antenna switch 602 of antenna element 604, to connect
Receive or send radiofrequency signal RF1.Controller 605 receives sensing signal 606, to judge whether antenna element 604 is blocked, when
When antenna element 604 is blocked, controller 605 controls duplexer 602 and is cut by the second feed side 604-2 of antenna element 604
Change to the second feed side 603-2 of antenna element 603.
In one embodiment, antenna element 604 can be sensed by the sensor being arranged in around antenna element 604 to receive and dispatch
Radiofrequency signal RF1 intensity (such as Rx), when intensity be less than threshold value when, can determine whether that antenna element 604 is blocked.At another
In embodiment, whether have object close, such as passed with infrared ray if can be sensed by the sensor being arranged in around antenna element 604
Sensor senses the close of human body, when have object close to when, can determine whether that antenna element 604 is blocked.
Indicate that the intensity for the radiofrequency signal RF1 that antenna element 604 receives or sends is less than threshold value or indicates that object is close
The sensing signal 606 of antenna element 604 is sent to controller 605, and controller 605 receives sensing signal 606, to control
Duplexer 602 is switched to the second feed side 603-2 of antenna element 603 from the second feed side 604-2 of antenna element 604.
In this way, radiofrequency signal RF1 becomes receiving and dispatching via antenna element 603 from via the transmitting-receiving of antenna element 604, antenna element 604 is avoided
Generated signal throughput is weak when being blocked.
As described above, the second feed side 603-2 is not when antenna element 603 is as a single feed antenna cell operation
Receive and dispatch any signal.When antenna element 603 is as a doubly-fed antenna cell operation, the second feed side 603-2 will be received and dispatched
Radiofrequency signal.It should be noted that two feed sides were received and dispatched penetrates when antenna element 603 is as doubly-fed antenna cell operation
The frequency of frequency signal is identical.
In one embodiment, duplexer 602 shown in fig. 6 is a single-pole double throw (Single Port Double
Terminal, SPDT) switch.
Fig. 7 is the schematic diagram of the mimo antenna system 700 according to an embodiment of the present invention.As shown in fig. 7, MIMO days
Linear system system includes RF transceiver 701, duplexer 702, antenna element 703, antenna element 704, antenna element 705 and control
Device 706.RF transceiver 701 is for receiving and emitting RF signal；Duplexer 702 couples RF transceiver 701, to receive
Radiofrequency signal from RF transceiver 701 sends radiofrequency signal to RF transceiver 701；Antenna element 703 is single feed-in
Antenna element, single feed side 703-1 coupling antenna switch 702 of antenna element 703 is to receive or send radiofrequency signal RF1；
Antenna element 704 is the doubly-fed antenna unit with the first feed side 704-1 and the second feed side 704-2, antenna element 704
The first feed side 704-1 couple RF transceiver 701, to receive radiofrequency signal RF2 from RF transceiver 701 or to
RF transceiver 701 sends radiofrequency signal RF2；Antenna element 705 is that have the first feed side 705-1 and the second feed side 705-
First feed side 705-1 of 2 doubly-fed antenna unit, antenna element 705 couples RF transceiver 701, comes to receive
The radiofrequency signal RF3 of RF transceiver 701 sends radiofrequency signal RF3 to RF transceiver 701.Controller 706 receives sensing
Signal 707, to judge whether antenna element 703 is blocked, when antenna element 703 is blocked, controller 706 controls antenna
Switch 702 is switched to the one of them of antenna element 704 or antenna element 705 by antenna element 703.
In one embodiment, antenna element 703 can be sensed by the sensor being arranged in around antenna element 703 to receive and dispatch
Radiofrequency signal RF1 intensity (such as Rx), when intensity be less than threshold value when, can determine whether that antenna element 703 is blocked.At another
In embodiment, whether have object close, such as passed with infrared ray if can be sensed by the sensor being arranged in around antenna element 703
Sensor senses the close of human body, when have object close to when, can determine whether that antenna element 703 is blocked.
Indicate that the intensity for the radiofrequency signal RF1 that antenna element 703 receives or sends is less than threshold value or indicates that object is close
The sensing signal 707 of antenna element 703 is sent to controller 706, and controller 706 receives sensing signal 707, to control
Duplexer 702 is switched to the second feed side 704-2 of antenna element 704 from single feed side 703-1 of antenna element 703 or cuts
Change to the second feed side 705-2 of antenna element 705.In this way, radiofrequency signal RF1 from via antenna element 703 transmitting-receiving become through
Received and dispatched by antenna element 704 or antenna element 705, avoid antenna element 703 when being blocked generated signal throughput it is weak.
As described above, when antenna element 704 and 705 is as a single feed antenna cell operation, the second feed side
704-2 and 705-2 does not receive and dispatch any signal.When antenna element 704 and 705 is as a doubly-fed antenna cell operation, the
Two feed side 704-2 and 705-2 are by transceiving radio frequency signal.It should be noted that when antenna element 704 and 705 enters day as double-fed
When line cell operation, the frequency of the radiofrequency signal of two feed sides transmitting-receiving is identical.
In one embodiment, duplexer 702 shown in Fig. 7 is a single-pole three throw (Single Port Triple
Terminal, SP3T) switch.
Fig. 8 is the schematic diagram of the mimo antenna system 800 according to an embodiment of the present invention.As shown in figure 8, MIMO days
Linear system system includes RF transceiver 801, duplexer 802, antenna element 803, antenna element 804, antenna element 805, antenna
Unit 806 and controller 807.RF transceiver 801 is for receiving and emitting RF signal；Duplexer 802 couples radio-frequency receiving-transmitting
Device 801, to receive radiofrequency signal from RF transceiver 801 or send radiofrequency signal to RF transceiver 801；Antenna list
Member 803 is the doubly-fed antenna unit with the first feed side 803-1 and the second feed side 803-2, the first of antenna element 803
Feed side 803-1 couples RF transceiver 801, to receive radiofrequency signal RF1 from RF transceiver 801 or receive to radio frequency
It sends out device 801 and sends radiofrequency signal RF1；Antenna element 804 is single feed antenna unit, single feed side 804-1 of antenna element 804
Coupling antenna switch 802 is to receive or send radiofrequency signal RF2；Antenna element 805 is single feed antenna unit, antenna element
805 single feed side 805-1 coupling antenna switch 802 is to receive or send radiofrequency signal RF3；Antenna element 806 is that have
The doubly-fed antenna unit of first feed side 806-1 and the second feed side 806-2, the first feed side 806-1 of antenna element 806
RF transceiver 801 is coupled, to receive radiofrequency signal RF4 from RF transceiver 801 or send to RF transceiver 801
Radiofrequency signal RF4.Controller 807 receives sensing signal 808, to judge antenna element 804 or 805 whether be blocked, the same day
When line unit 804 or 805 is blocked, controller 807 controls duplexer 802 and is switched to antenna element by antenna element 804
803 or antenna element 806 is switched to by antenna element 804 or antenna element 803 is switched to by antenna element 805 or by day
Line unit 805 is switched to antenna element 806.
In one embodiment, antenna element can be sensed by the sensor being arranged in around antenna element 804 and 805
Intensity (the example for the radiofrequency signal RF3 that the intensity (such as Rx1) and antenna element 805 of the radiofrequency signal RF2 of 804 transmitting-receivings is received and dispatched
Such as Rx2), when intensity is less than threshold value, it can determine whether that antenna element 804 or 805 is blocked.It in another embodiment, can be by setting
Whether to sense have object close, such as sense human body with infrared sensor if setting the sensor around antenna element 803
It is close, when have object close to when, can determine whether that antenna element 804 or 805 is blocked.
Indicate that the intensity for the radiofrequency signal RF2 or RF3 that antenna element 804 or 805 receives or sends is less than threshold value or expression
There is object to be sent to controller 807 close to the sensing signal 808 of antenna element 804 or 805, controller 807 receives sensing
Signal 808 is switched to the of antenna element 803 from single feed side 804-1 of antenna element 804 to control duplexer 802
Two feed side 803-2 or the second feed side 806-2 for being switched to antenna element 806, or duplexer 802 is controlled from antenna element
805 single feed side 805-1 is switched to the second feed side 803-2 of antenna element 803 or is switched to the second of antenna element 806
Feed side 806-2.In this way, radiofrequency signal RF2 becomes from via the transmitting-receiving of antenna element 804 via antenna element 803 or antenna list
Member 806 receive and dispatch, avoid antenna element 804 when being blocked generated signal throughput it is weak, radiofrequency signal RF3 is from via antenna
The transmitting-receiving of unit 805 becomes receiving and dispatching via antenna element 803 or antenna element 806, avoids antenna element 805 produced when being blocked
Signal throughput it is weak.
As described above, when antenna element 803 and 806 is as a single feed antenna cell operation, the second feed side
803-2 and 806-2 does not receive and dispatch any signal.When antenna element 803 and 806 is as a doubly-fed antenna cell operation, the
Two feed side 803-2 and 806-2 are by transceiving radio frequency signal.It should be noted that when antenna element 803 and 806 enters day as double-fed
When line cell operation, the frequency of the radiofrequency signal of two feed sides transmitting-receiving is identical.
In one embodiment, duplexer 802 shown in Fig. 8 is a double-pole four-throw (Double Port Four
Terminal, DP4T) switch.
It should be noted that the utility model is not intended to limit the single feed antenna unit and/or double-fed that duplexer is coupled
Enter the quantity of antenna element.In one embodiment, duplexer can couple multiple single feed antenna units and a double-fed enters
Antenna element, and when any single feed antenna unit of its coupling is blocked, the single feed antenna unit being blocked from this is cut
Change to doubly-fed antenna unit.In one embodiment, duplexer can couple multiple single feed antenna units and multiple double-feds
Enter antenna element, and when any single feed antenna unit of its coupling is blocked, the single feed antenna unit being blocked from this
It is switched to any one doubly-fed antenna unit.In one embodiment, duplexer can couple a single feed antenna unit
With multiple doubly-fed antenna units, and its coupling single feed antenna unit be blocked when, from single feed antenna unit switch
To any one doubly-fed antenna unit.
In addition, it is necessary to which explanation, the utility model are not intended to limit single feed antenna unit that RF transceiver is coupled
And/or the quantity of doubly-fed antenna unit.
In the embodiments of the present invention, duplexer can be with M knife N throw switch, and wherein M is just whole more than or equal to 1
Number, N are the positive integer greater than M.The M knife of duplexer couples the RF transceiver, comes from the radio-frequency receiving-transmitting to receive
M radiofrequency signal of device sends the M radiofrequency signal to the RF transceiver.The N of duplexer throws the N number of antenna of coupling
Unit, this N number of antenna element includes at least one doubly-fed antenna unit, to one of antenna in N number of antenna element
When unit is blocked, a doubly-fed antenna unit is switched to from the antenna element being blocked.
In one embodiment, antenna element can be PIFA antenna, unipole antenna or loop aerial, and the utility model is simultaneously
It is not limited to the type of antenna element.
Fig. 9 is the schematic diagram using the mobile phone 900 of mimo antenna system provided by the utility model.As shown in figure 9, mobile phone
900 include four antenna elements 901,902,903 and 904.Wherein antenna element 904 is doubly-fed antenna unit.When user's
When palm when held mobile phone 900, antenna 901 is blocked.At this point, the signal transmitting and receiving of antenna 901 is switched to antenna 904.
Mimo antenna system provided by the utility model can operate with various user equipmenies, and such as portable or mobile is set
The user equipmenies such as standby, wearable device, wireless telecom equipment or computer equipment.For example, can be in smart phone, intelligent hand
Table, personal digital assistant, digital camera or such as desktop computer, laptop computer (laptop computer) or notes
This computer (notebook computer) etc. calculates to be implemented in equipment.It is also possible to a part of machine type device, can be
Fixed or static device, household equipment, wire communication facility calculate IoT the or NB-IoT equipment such as equipment.For example, can be with
Implement in intelligent thermostat, intelligent refrigerator, intelligent door lock, wireless speaker or home control centres.
Multi-input multi-output antenna system provided by the utility model, due to including a doubly-fed antenna unit, this pair
One feed side of feed antenna unit is optionally cut by duplexer, to receive or send originally by another day
The radiofrequency signal that line unit receives or sends, so when the signal transmitting and receiving of another antenna element is obstructed, it is ensured that antenna system
Normal work.
According to aforementioned, it should be understood that each implementation of the utility model is described for illustrative purposes,
And in the case where not departing from the scope of the utility model and spirit, various modifications can be carried out.Therefore, the utility model is public
The each implementation opened is not intended to be limiting, and true scope and spirit are indicated by claims.
Claims (10)
1. a kind of multi-input multi-output antenna system, comprising:
RF transceiver；
Duplexer couples the RF transceiver, to receive the first radiofrequency signal from the RF transceiver or to
The RF transceiver sends first radiofrequency signal；
First antenna unit couples the duplexer to receive or send first radiofrequency signal；
Second antenna element, wherein second antenna element is the doubly-fed antenna with the first feed side and the second feed side
First feed side of unit, second antenna element couples the RF transceiver, comes from the radio frequency to receive
Second radiofrequency signal of transceiver sends second radiofrequency signal to the RF transceiver；And
Controller couples the duplexer, is switched to controlling the duplexer from the first antenna unit described
Second feed side of second antenna element.
2. multi-input multi-output antenna system according to claim 1, which is characterized in that the controller is according to sensing letter
Second feed side of second antenna element number is switched to control the duplexer from the first antenna unit.
3. multi-input multi-output antenna system according to claim 2, which is characterized in that described in the sensing signal expression
The intensity for first radiofrequency signal that first antenna unit receives or sends is less than threshold value or indicates object close to described the
One antenna element.
4. multi-input multi-output antenna system according to claim 1, which is characterized in that the frequency of first radiofrequency signal
Rate is equal to the frequency of second radiofrequency signal.
5. multi-input multi-output antenna system according to claim 1, which is characterized in that the first antenna unit is single
Feed antenna unit, single feed side of the first antenna unit couple the duplexer to receive or send described first
Radiofrequency signal, the controller control the duplexer be switched to from single feed side of the first antenna unit it is described
Second feed side of second antenna element.
6. multi-input multi-output antenna system according to claim 1, which is characterized in that the first antenna unit is tool
There is a doubly-fed antenna unit of the first feed side and the second feed side, described in the first feed side coupling of the first antenna unit
RF transceiver, to receive or send third radiofrequency signal, the second feed side of the first antenna unit couples the day
Wiretap, to receive or send first radiofrequency signal, the controller controls the duplexer from described first day
Second feed side of line unit is switched to second feed side of second antenna element.
7. multi-input multi-output antenna system according to claim 1, which is characterized in that the duplexer is that M knife N is thrown
Switch, wherein M is the positive integer more than or equal to 1, and N is the positive integer greater than M.
8. multi-input multi-output antenna system according to claim 7, which is characterized in that the M of the duplexer
Knife couples the RF transceiver, to receive M radiofrequency signal from the RF transceiver or to the radio-frequency receiving-transmitting
Device sends the M radiofrequency signal.
9. multi-input multi-output antenna system according to claim 7 characterized by comprising
N number of antenna element, wherein N number of antenna element includes the first antenna unit and second antenna element.
10. multi-input multi-output antenna system according to claim 1, which is characterized in that the first antenna unit and
Second antenna element is PIFA antenna, unipole antenna or loop aerial.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762559739P | 2017-09-18 | 2017-09-18 | |
| US62/559,739 | 2017-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209045766U true CN209045766U (en) | 2019-06-28 |
Family
ID=67033410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821514617.5U Active CN209045766U (en) | 2017-09-18 | 2018-09-17 | Multi-input multi-output antenna system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110971245A (en) * | 2019-11-29 | 2020-04-07 | 惠州Tcl移动通信有限公司 | Radio frequency circuit, control method thereof and mobile terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971245A (en) * | 2019-11-29 | 2020-04-07 | 惠州Tcl移动通信有限公司 | Radio frequency circuit, control method thereof and mobile terminal |
| CN110971245B (en) * | 2019-11-29 | 2022-04-22 | 惠州Tcl移动通信有限公司 | Radio frequency circuit, control method thereof and mobile terminal |
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