CN110266327A - Telecommunication circuit and electronic equipment with it - Google Patents
Telecommunication circuit and electronic equipment with it Download PDFInfo
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- CN110266327A CN110266327A CN201910548430.XA CN201910548430A CN110266327A CN 110266327 A CN110266327 A CN 110266327A CN 201910548430 A CN201910548430 A CN 201910548430A CN 110266327 A CN110266327 A CN 110266327A
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- transceiver
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application proposes a kind of telecommunication circuit and the electronic equipment with it, wherein telecommunication circuit includes: first antenna；First communication leg, first communication leg receive or send signal by the first antenna；Low-power wide area network LPWAN communication leg, the LPWAN communication leg receive or send signal by the first antenna；Multiplex switch, the multiplex switch connects first communication leg, the first antenna and the LPWAN communication leg, the multiplex switch is connected to the first antenna for controlling the LPWAN communication leg or first communication leg, to share the first antenna, thus, it is possible to which electronic equipment is made to realize LPWAN communication, expand the communication capacity of electronic equipment, it is at low cost, be easily achieved moreover, without changing the original antenna structure of electronic equipment.
Description
Technical field
This application involves field of communication technology more particularly to a kind of telecommunication circuit and with its electronic equipment.
Background technique
The RF front-end circuit of electronic equipment such as mobile phone in the related technology is typically based on cellular network, WIFI, bluetooth BT
Equal communication standards design, however, LPWAN rises with the upsurge of Internet of Things, existing communication standard can not in electronic equipment
It realizes LPWAN communication, causes communication capacity limited, influence the experience of user.
Apply for content
The application is intended to solve at least some of the technical problems in related technologies.
For this purpose, first purpose of the application is to propose a kind of telecommunication circuit, to realize LPWAN communication function, expand
The communication capacity of electronic equipment.
Second purpose of the application is to propose a kind of electronic equipment with the telecommunication circuit.
In order to achieve the above object, the application first aspect embodiment proposes a kind of telecommunication circuit, comprising: first antenna；The
One communication leg, first communication leg receive or send signal by the first antenna；Low-power wide area network LPWAN is logical
Believe branch, the LPWAN communication leg receives or sends signal by the first antenna；Multiplex switch, the multiplex switch
First communication leg, the first antenna and the LPWAN communication leg are connected, the multiplex switch is described for controlling
LPWAN communication leg or first communication leg are connected to the first antenna, to share the first antenna.
According to the telecommunication circuit that the embodiment of the present application proposes, communicate LPWAN communication leg and first by multiplex switch
Branch even shares first antenna, thus, it is possible to which electronic equipment is made to realize LPWAN communication, expands the communication capacity of electronic equipment,
It is at low cost, be easily achieved moreover, without changing the original antenna structure of electronic equipment.
According to one embodiment of the application, first communication leg is cellular communication branch.
According to one embodiment of the application, the cellular communication branch includes cellular communication transceiver and radio-frequency front-end mould
Block, the multiplex switch are independent switching device, wherein the switching device has first path and the second path, described
One end of the first path of switching device connects the first antenna, and the other end of the first path of the switching device connects institute
State LPWAN communication leg, the one end in the second path of the switching device connects the first antenna, and the of the switching device
The other end in two paths connects the first port of the RF front-end module, and the second port of the RF front-end module is also connected with
The cellular communication transceiver.
According to one embodiment of the application, the cellular communication branch includes cellular communication transceiver and radio-frequency front-end mould
Block, the multiplex switch are the first path of switch unit in the RF front-end module, wherein the first of the switch unit
The one end in path connects the first antenna, and the other end of the first path of the switch unit connects the LPWAN communication branch
Road, the switch unit also have the second path to the path N+1, the second path to the path N+1 of the switch unit
One end connects the first antenna, and the other end in the second path to path N+1 of the switch unit is connected respectively institute
The first end of N number of radio frequency path in RF front-end module is stated, the second end of N number of radio frequency path is also connected with the cellular communication
Transceiver, N are positive integer.
According to one embodiment of the application, the cellular communication interface phase of the cellular communication transceiver connection processor
Even, I/Q signal is transmitted between the cellular communication transceiver and the processor.
According to one embodiment of the application, first communication leg is Connectivity communication leg.
According to one embodiment of the application, the Connectivity communication leg includes Connectivity transmitting-receiving
The first port of device, the first frequency range access, the second frequency range access and combiner, the combiner connects the first antenna, institute
The second port for stating combiner connects one end of the first frequency range access, the third port connection described second of the combiner
One end of frequency range access, the first frequency range access connect the Connectivity with the other end of the second frequency range access
Transceiver, the multiplex switch are connected between the first frequency range access and the combiner, wherein the multiplex switch tool
There are first path and the second path, one end of the first path of the multiplex switch connects the second port of the combiner, institute
The other end for stating the first path of multiplex switch connects the LPWAN communication leg, and the one of the second path of the multiplex switch
End connects the second port of the combiner, and it is logical that the other end in the second path of the multiplex switch connects first frequency range
Road.
According to one embodiment of the application, the Connectivity of the Connectivity transceiver connection processor
Communication interface is connected, and transmits I/Q signal between the Connectivity communication transceiver and the processor.
According to one embodiment of the application, the Connectivity communication leg is for receiving or sending radio frequency letter
Number, at least one of BT signal, GPS signal and FM signal.
According to one embodiment of the application, the LPWAN communication leg includes LPWAN transceiver, wherein described
LPWAN transceiver connects the multiplex switch, and the LPWAN transceiver is also connected with the digital interface of processor, and the LPWAN is received
Digital signal is transmitted between hair device and the processor.
According to one embodiment of the application, the LPWAN communication leg further includes microcontroller chip, the micro-control coremaking
Piece is connected between the LPWAN transceiver and the processor.
According to one embodiment of the application, the LPWAN transceiver carries out LoRa or Sigfox wireless transmission.
In order to achieve the above objectives, a kind of electronic equipment that the application second aspect embodiment proposes, including first aspect are real
Apply telecommunication circuit described in example.
It is enabled to according to the electronic equipment that the embodiment of the present application proposes by the telecommunication circuit of first aspect embodiment
Electronic equipment realizes LPWAN communication, expands the communication capacity of electronic equipment, moreover, without changing the original antenna of electronic equipment
Structure, it is at low cost, be easily achieved.
The additional aspect of the application and advantage will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or recognized by the practice of the application.
Detailed description of the invention
The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the block diagram according to the telecommunication circuit of the embodiment of the present application；
Fig. 2 is the schematic diagram one of LPWAN communication leg in the telecommunication circuit according to the embodiment of the present application；
Fig. 3 is the schematic diagram two of LPWAN communication leg in the telecommunication circuit according to the embodiment of the present application；
Fig. 4 is the schematic illustration one according to the telecommunication circuit of the embodiment of the present application；
Fig. 5 is the schematic illustration two according to the telecommunication circuit of the embodiment of the present application；
Fig. 6 is the schematic illustration of RF front-end module in the telecommunication circuit according to the embodiment of the present application；
Fig. 7 is the schematic illustration two according to the telecommunication circuit of the embodiment of the present application；And
Fig. 8 is the block diagram according to the electronic equipment of the embodiment of the present application.
Specific embodiment
Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the application, and should not be understood as the limitation to the application.
Below with reference to the accompanying drawings the telecommunication circuit of the embodiment of the present application and the electronic equipment with it are described.
It is understood that the telecommunication circuit of the embodiment of the present application can be used for electronic equipment, and then electronic equipment can pass through communication electricity
Road is communicated with other equipment, for example, realizing LPWAN (Low-Power Wide-Area Network, low-power wide area network
Network) communication.Specifically, in the telecommunication circuit of electronic equipment, increase LPWAN communication leg, made by time division multiplexing mode
LPWAN communication leg and cellular communication branch (or Connectivity communication leg) common antenna, enable electronic equipment
Using LPWAN technology, thus, expand the communication capacity of electronic equipment.
Wherein, common antenna can be selected according to the working frequency range of LPWAN communication leg, for example, the work of LPWAN communication leg
When working frequency is using the Sub-1G ISM band for exempting from authorization, LPWAN communication leg is arranged to share with cellular communication branch
Antenna, the working frequency of LPWAN communication leg be when making 2.4G frequency range, by LPWAN communication leg be arranged to
Connectivity communication leg common antenna.
In some embodiments of the present application, electronic equipment can be mobile terminal, for example, mobile terminal may include but unlimited
In mobile phone, tablet computer, intelligent wearable device (smartwatch, Intelligent bracelet etc.).
The structure of the telecommunication circuit of the embodiment of the present application is discussed in detail below in conjunction with attached drawing 1-5.
Fig. 1 is the block diagram according to the telecommunication circuit of the embodiment of the present application.As shown in Figure 1, telecommunication circuit includes:
One antenna 11, the first communication leg 12, low-power wide area network LPWAN communication leg 13 and multiplex switch 14.
Wherein, the first communication leg 12 can receive or send signal by first antenna 11；LPWAN communication leg 13 can
To receive or send signal by first antenna 11；Multiplex switch 14 connects the first communication leg 12, first antenna 11 and LPWAN
Communication leg 13, multiplex switch 14 are connected to first antenna 11 for controlling LPWAN communication leg 13 or the first communication leg 12, with
Share first antenna 11.
It is understood that multiplex switch 14 can be according to the control instruction control LPWAN communication leg 13 or the first communication received
Branch 12 is connected to first antenna 11.Specifically, electronic equipment can be when receiving the instruction of starting LPWAN communication, and Xiang Fuyong is opened
It closes 14 and sends the first control instruction, multiplex switch 14 can control the connection of LPWAN communication leg 13 first according to the first control instruction
Antenna 11, at this point, LPWAN communication leg 13 can receive or send signal by first antenna 11.Similarly, electronic equipment can connect
When receiving the instruction of the first communication leg of starting or closing the instruction of LPWAN communication, the second control is sent to multiplex switch 14 and is referred to
It enables, multiplex switch 14 can control the first communication leg 12 according to the second control instruction and be connected to first antenna 11, at this point, the first communication
Branch 12 can receive or send signal by first antenna 11.
In addition, telecommunication circuit may also include the second antenna and the second communication leg, wherein the second communication leg can pass through
Second antenna receives or sends signal.
The telecommunication circuit that the embodiment of the present application proposes as a result, makes LPWAN communication leg 13 and first by multiplex switch 14
Communication leg 12 even shares first antenna 11, thus, it is possible to which electronic equipment is made to realize LPWAN communication, expands electronic equipment
Communication capacity, it is at low cost, be easily achieved moreover, without changing the original antenna structure of electronic equipment.
According to one embodiment of the application, as shown in Fig. 2, LPWAN communication leg 13 includes LPWAN transceiver 131,
In, 131 connection multiplexing switch 14 of LPWAN transceiver.
Specifically, the signal transmitted between LPWAN communication leg 13 and first antenna 11 can be radio frequency rf signal,
LPWAN transceiver 131 is being sent to processor 20 after the radiofrequency signal received can be converted into digital signal.
For example, LPWAN transceiver 131 can when multiplex switch 14 controls LPWAN communication leg 13 and is connected to first antenna 11
Signal is received or sent by first antenna 11, for example, first antenna 11 can receive radio frequency letter when telecommunication circuit receives signal
Number, and by the radio signal transmission received to LPWAN transceiver 131.Alternatively, LPWAN is received when telecommunication circuit sends signal
Hair device 131 generates radiofrequency signal to receiving after signal is handled, and by radio signal transmission to first antenna 11, so as to the
One antenna 11 emits radiofrequency signal.
Further, LPWAN transceiver 131 is also connected with the digital interface digital interface of processor 20,
Digital signal is transmitted between LPWAN transceiver 131 and processor 20.That is, LPWAN transceiver 131 can be by treated
Signal is sent to processor 20.
It is understood that LPWAN transceiver 131 is connected with the digital interface of processor 20, between by specific
Digital interface protocol transmits signal, for example (Universal Asynchronous Receiver/Transmitter leads to UART
With asynchronous receiving-transmitting transmitter), SPI (Serial Peripheral Interface, Serial Peripheral Interface (SPI)).
In the application other embodiments, as shown in figure 3, LPWAN communication leg 13 may also include microcontroller chip 132,
Microcontroller chip 132 is connected between LPWAN transceiver 131 and processor 20, and microcontroller chip 132 is used to handle signal, and
Control 131 receiving and transmitting signal of LPWAN transceiver.That is, when telecommunication circuit receives signal, 131 pairs of LPWAN transceiver receptions
To radiofrequency signal handled after, will treated that radiofrequency signal is sent to microcontroller chip 132, microcontroller chip 132 is right
The radiofrequency signal is sent to out processor 20 after being further processed.Alternatively, LPWAN is received when telecommunication circuit sends signal
Sending out device 131 can receive treated the signal of microcontroller chip 132, and radio frequency letter is generated after signal is handled to receiving
Number, and by radio signal transmission to first antenna 11, so that first antenna 11 emits radiofrequency signal.
It should be noted that as shown in Fig. 4, Fig. 5 and Fig. 7, one end that LPWAN transceiver 131 is connected with first antenna 13
It is provided with filter 133, for example, first antenna 11 can receive signal, and the letter that will be received when telecommunication circuit receives signal
Number it is transmitted to filter 133, the quality signal after the filtering processing of filter 133 is transmitted to LPWAN transceiver 131 again.Or
Person, when telecommunication circuit sends signal, filter 133 can be filtered radiofrequency signal to be launched, and will be at filtering
Signal after reason is transferred to first antenna 11.
It should be understood that the passband of the filter in each of the links includes at least the frequency of the RF signal of the link transmission, also
It is to say, the passband of filter 133 includes at least the frequency for the RF signal that LPWAN communication leg 13 is transmitted.
As an example, LPWAN transceiver 131 can carry out LoRa or Sigfox wireless transmission.That is,
The Radio Transmission Technology that LPWAN communication leg 13 uses can be LoRa, Sigfox etc., or may be other privately owned associations
View.Wherein, LoRa is the low-power consumption networking technology researched and developed by SemTech, is a kind of remote-wireless biography based on spread spectrum
Transferring technology operates mainly in ISM public frequency.
In some embodiments of the present application, the working frequency of LPWAN communication leg 13 can exempt from authorization to use
Sub-1GISM frequency range, alternatively, the working frequency of LPWAN communication leg 13 can be 2.4G frequency range.Wherein it is possible to according to LPWAN
The shared antenna of the working frequency range selection of communication leg 13.
A kind of structure of the telecommunication circuit of the embodiment of the present application is introduced in 4- Fig. 6 with reference to the accompanying drawing.
According to one embodiment of the application, as shown in figure 4, the first communication leg 12 can be cellular communication branch 30.
Wherein, cellular communication, that is, Celluar modem can refer to cellular communication standard 2G/3G/4G/5G.
Specifically, cellular communication branch 30 includes cellular communication transceiver 301 and RF front-end module 302, wherein honeycomb
The cellular communication interface that communication transceiver 301 connects processor 20 is connected, and transmits between cellular communication transceiver and processor 20
I/Q signal (wherein, I is in-phase (same to phase), and q is quadrature (orthogonal)).
More specifically, the signal transmitted between cellular communication transceiver 301 and first antenna 11 can be radio frequency rf signal,
Cellular communication transceiver 301 is being sent to processor 20 after the radiofrequency signal received can be converted into I/Q signal.
As an example, when multiplex switch 14, which controls cellular communication branch 30, is connected to first antenna 11, cellular communication
Branch 30 can receive or send signal by first antenna 11, for example, first antenna 11 can connect when telecommunication circuit receives signal
The collection of letters number, and the signal received is transmitted to RF front-end module 302, then, RF front-end module 302 carries out the signal
The processing such as amplification, filtering, matching, and signal transmits cellular communication transceiver 301 by treated, next, cellular communication is received
Hair device 301 handles the signal received, such as radiofrequency signal is converted to I/Q signal, and signal is sent by treated
To processor 20.Alternatively, RF front-end module 302 can carry out radiofrequency signal to be launched when telecommunication circuit receives signal
The processing such as amplification, filtering, matching, and signal is transferred to first antenna 11 by treated.
It should also be understood that when the working frequency of LPWAN communication leg 13 is using the Sub-1G ISM band for exempting from authorization, the
One communication leg 12 can choose cellular communication branch 30, i.e. LPWAN communication leg 13 and cellular communication branch 30 shares first
Antenna 11, that is to say, that first antenna 11 can choose the antenna ANT1 of cellular communication branch 30.
Wherein, the working frequency range of antenna ANT1 includes at least set by the working frequency range and the electronic equipment of LPWAN communication
The frequency range of cellular communication standard.
In one embodiment of the application, in LPWAN communication leg 13 and 30 common antenna ANT1 of cellular communication branch
In the case where, the second communication leg can be Connectivity communication leg 40, and the second antenna can be communicated with Connectivity
The antenna ANT2 of branch 40.
Wherein, Connectivity communication is Connectivity modem, on cell phone platform, Connectivity communication
It including WIFI communication, BT (Bluetooth, bluetooth) communication, or can also include GPS (Global
PositioningSystem, global positioning system) and FM (Frequency Modulation, frequency modulation).
Specifically, Connectivity communication leg 40 includes Connectivity transceiver 401, the first frequency range access
402, the second frequency range access 403 and combiner 404, the first port of combiner 404 connect the second antenna, and the of combiner 404
Two-port netwerk connects one end of the first frequency range access 402, and the third port of combiner 404 connects one end of the second frequency range access 403,
First frequency range access 402 connects Connectivity transceiver 401 with the other end of the second frequency range access 403.
Wherein, the Connectivity communication interface that Connectivity transceiver 401 connects processor 20 is connected,
I/Q signal is transmitted between Connectivity transceiver and processor 20.
More specifically, the signal transmitted between Connectivity communication leg 40 and the second antenna can be believed for radio frequency
Number, Connectivity communication leg 40 is being sent to processor 20 after the radiofrequency signal received can be converted into I/Q signal.
As an example, when Connectivity communication leg 40 sends signal, Connectivity transceiver 401
The signal that can be sent to processor 20 is handled, to generate the radiofrequency signal of the first frequency range and the radiofrequency signal of the second frequency range,
The radiofrequency signal of first frequency range is transferred to the second port of combiner 404, the radio frequency of the second frequency range by the first frequency range access 402
Signal is transferred to the third port of combiner 404, the radiofrequency signal of the first frequency range and the second frequency range by the second frequency range access 403
Radiofrequency signal by combiner 404 i.e. Combiner be combined processing after reach antenna ANT2.
In other embodiments, when Connectivity communication leg 40 sends signal, Connectivity transceiver
401 signals that can be sent to processor 20 are handled, to generate the radiofrequency signal of the first frequency range or the radio frequency letter of the second frequency range
Number, then the radiofrequency signal of the radiofrequency signal of the first frequency range or the second frequency range is that Combiner reaches antenna by combiner 404
ANT2。
Wherein, filter 4021 is provided on the first frequency range access 402, the working frequency range of the first frequency range access 402 is
WIFI2.4G, for filter 4021 for filtering, the passband of filter 4021 includes at least the RF letter of the first frequency range access 402 transmission
Number frequency.Filter 4031 is provided on second frequency range access 403, the working frequency range of the second frequency range access 403 is
WIFI5G, for filter 4031 for filtering, the passband of filter 4021 includes at least the RF signal of the second frequency range access 403 transmission
Frequency.
It is understood that when the working frequency of LPWAN communication leg 13 is using the Sub-1G ISM band for exempting from authorization,
Connectivity communication leg can receive or send signal using antenna ANT2 alone, without communicating branch with LPWAN
13 common antenna of road.
Wherein, the working frequency range of antenna ANT2 includes at least WIFI 2.4G and WIFI 5G frequency range.
According to the embodiment of Fig. 4, multiplex switch 14 is independent switching device 141, wherein switching device 141 has the
One path and the second path, one end connection first antenna 11 of the first path of switching device 141, the first of switching device 141
The other end in path connects LPWAN communication leg 13, and the one end in the second path of switching device 141 connects first antenna 11, opens
Close the first port of the other end connection RF front-end module 302 in the second path of device 141, the of RF front-end module 302
Two-port netwerk is also connected with cellular communication transceiver 301.
Wherein, switching device 141 can be single-pole double-throw switch (SPDT) SPDT, the first end of single-pole double-throw switch (SPDT) SPDT and common end
Between be formed as first path, be formed as the second path between the second end and common end of single-pole double-throw switch (SPDT) SPDT.
It should be understood that when the first path conducting of switching device 141 is first end and the common end of single-pole double-throw switch (SPDT) SPDT
When connection, LPWAN communication leg 13 connects first antenna 11, i.e. antenna ANT1, when the of switching device 141 by first path
When the conducting of two paths is the second end and common end connection of single-pole double-throw switch (SPDT) SPDT, before cellular communication transceiver 301 and radio frequency
End module 302 connects first antenna 11, i.e. antenna ANT1 by the second path.
LPWAN communication leg 13 and 30 common antenna of cellular communication branch are made by single-pole double-throw switch (SPDT) SPDT as a result,
ANT1 expands the communication capacity of electronic equipment thus, it is possible to which electronic equipment is made to realize LPWAN communication, moreover, without changing
The original antenna structure of electronic equipment, it is at low cost, be easily achieved.
According to the embodiment of Fig. 5 and Fig. 6, multiplex switch 14 is first of switch unit 3021 in RF front-end module 302
Path, wherein one end of the first path of switch unit 3021 connects first antenna 11, the first path of switch unit 3021
The other end connects LPWAN communication leg 13, and switch unit 3021 also has the second path to the path N+1, switch unit 3021
The second path to the path N+1 one end connect first antenna 11, the second path to the path N+1 of switch unit 3021
The other end is connected respectively the first end of N number of radio frequency path 3022 in RF front-end module 302, N number of radio frequency path 3022
Second end is also connected with cellular communication transceiver 301, and N is positive integer.
That is, can be incited somebody to action when the switch unit 3021 in RF front-end module 302 i.e. FEM model has extra mouth
LPWAN communication leg 13 accesses the switch unit 3021 in RF front-end module 302, thus, no setting is required independent derailing switch
Part saves cost and installation space.
Wherein, N number of radio frequency path 3022 may respectively be the radio frequency path of different communication frequency range, for example, the first radio frequency path
Communications band can be B1, the second radio frequency path communications band can be B2, third radio frequency path communications band can be
B3 ..., wherein B1, B2, B3 ... be not mutually equal.
It should be understood that LPWAN communication leg 13 connects first by first path when the first path of switch unit 3021
Antenna 11, i.e. antenna ANT1, when a conducting of the second path of switch unit 3021 into the path N+1, cellular communication
Transceiver 301 connects first antenna 11, i.e. antenna ANT1 by the path be connected in switch unit 3021.
LPWAN communication leg 13 and cellular communication branch are made by switch unit 3021 in RF front-end module 302 as a result,
30 common antenna ANT1 of road expands the communication capacity of electronic equipment thus, it is possible to which electronic equipment is made to realize LPWAN communication, and
It is at low cost, be easily achieved and without changing the original antenna structure of electronic equipment.
Another structure of the telecommunication circuit of 7 pairs of the embodiment of the present application is introduced with reference to the accompanying drawing.
According to another embodiment of the application, as shown in fig. 7, the first communication leg 12 can be logical for Connectivity
Believe branch 40.
Wherein, Connectivity communication leg 40 is for receiving or sending radiofrequency signal, BT signal, GPS signal and FM
At least one of signal.That is, Connectivity communication is Connectivity modem, on cell phone platform,
Connectivity communication includes WIFI communication, BT (Bluetooth, bluetooth) communication, or can also include GPS (Global
Positioning System, global positioning system) and FM (Frequency Modulation, frequency modulation).
Specifically, Connectivity communication leg 40 includes Connectivity transceiver 401, the first frequency range access
402, the first port of the second frequency range access 403 and combiner 404, combiner 404 connects first antenna 11, combiner 404
Second port connects one end of the first frequency range access 402, and the third port of combiner 404 connects the one of the second frequency range access 403
End, the first frequency range access 402 connect Connectivity transceiver 401 with the other end of the second frequency range access 403.
Wherein, the Connectivity communication interface that Connectivity transceiver 401 connects processor 20 is connected,
I/Q signal is transmitted between Connectivity communication transceiver 401 and processor 20.
More specifically, the signal transmitted between Connectivity communication leg 40 and first antenna 11 can be radio frequency
Signal, Connectivity communication leg 40 are being sent to processor after the radiofrequency signal received being converted into I/Q signal
20。
As an example, when multiplex switch 14, which controls Connectivity communication leg 40, is connected to first antenna 11,
Connectivity communication leg 40 can receive or send signal by first antenna 11, for example, when Connectivity is communicated
When branch 40 sends signal, the signal that Connectivity transceiver 401 can send processor 20 be handled, to generate the
The radiofrequency signal of the radiofrequency signal of the radiofrequency signal of one frequency range and the second frequency range, the first frequency range is passed by the first frequency range access 402
The radiofrequency signal of the defeated second port to combiner 404, the second frequency range is transferred to combiner 404 by the second frequency range access 403
Third port, after the radiofrequency signal of the radiofrequency signal of the first frequency range and the second frequency range is combined processing by combiner 404
Reach antenna ANT2.
In other embodiments, when Connectivity communication leg 40 sends signal, Connectivity transceiver
401 signals that can be sent to processor 20 are handled, to generate the radiofrequency signal of the first frequency range or the radio frequency letter of the second frequency range
Number, then the radiofrequency signal of the radiofrequency signal of the first frequency range or the second frequency range is that Combiner reaches antenna by combiner 404
ANT2。
It should also be understood that the first communication leg 12 can be selected when the working frequency of LPWAN communication leg 13 is 2.4G frequency range
Connectivity communication leg 40 is selected, i.e. LPWAN communication leg 13 and Connectivity communication leg 40 shares first day
Line 11, that is to say, that first antenna 11 can choose the antenna ANT2 of Connectivity communication leg 40.
Wherein, the working frequency range of antenna ANT2 includes at least the working frequency range and WIFI 2.4G and WIFI of LPWAN communication
5G frequency range.
Wherein, filter 4021 is provided on the first frequency range access 402, the working frequency range of the first frequency range access 402 is
WIFI2.4G, for filter 4021 for filtering, the passband of filter 4021 includes at least the RF letter of the first frequency range access 402 transmission
Number frequency.Filter 4031 is provided on second frequency range access 403, the working frequency range of the second frequency range access 403 is
WIFI5G, for filter 4031 for filtering, the passband of filter 4021 includes at least the RF signal of the second frequency range access 403 transmission
Frequency.
In one embodiment of the application, shared in LPWAN communication leg 13 and Connectivity communication leg 40
In the case where antenna ANT2, the second communication leg can be cellular communication branch 30, and the second antenna can be with cellular communication branch 30
Antenna ANT1.
Wherein, cellular communication, that is, Celluar modem can refer to cellular communication standard 2G/3G/4G/5G.
Specifically, cellular communication branch 30 includes cellular communication transceiver 301 and RF front-end module 302, wherein honeycomb
The cellular communication interface that communication transceiver 301 connects processor 20 is connected, and transmits between cellular communication transceiver and processor 20
I/Q signal (wherein, I is in-phase (same to phase), and q is quadrature (orthogonal)).
More specifically, the signal transmitted between cellular communication transceiver 301 and antenna ANT1 can be radio frequency rf signal, bee
Nest communication transceiver 301 is being sent to processor 20 after the radiofrequency signal received can be converted into I/Q signal.
As an example, cellular communication branch 30 can receive or send signal by first antenna 11, for example, communicating
When circuit receives signal, first antenna 11 can receive signal, and the signal received is transmitted to RF front-end module 302, so
Afterwards, RF front-end module 302 such as amplifies to the signal, filters, matching at the processing, and will treated that signal transmission honeycomb leads to
Believe transceiver 301, next, cellular communication transceiver 301 handles the signal received, such as radiofrequency signal is converted
For I/Q signal, and will treated that signal is sent to processor 20.Alternatively, when telecommunication circuit receives signal, radio-frequency front-end mould
Block 302 such as can amplify to radiofrequency signal to be launched, filter, match at the processing, and will treated that signal is transferred to first
Antenna 11.
It is understood that cellular communication branch 30 can be alone when the working frequency of LPWAN communication leg 13 is 2.4G frequency range
Receive or send signal using antenna ANT1, without with 13 common antenna of LPWAN communication leg.
Wherein, the working frequency range of antenna ANT1 includes at least the frequency range of cellular communication standard set by the electronic equipment.
According to the embodiment of Fig. 8, multiplex switch 14 is connected between the first frequency range access 402 and combiner 404, and multiplexing is opened
Closing 14 has first path and the second path, and one end of the first path of multiplex switch 14 connects the second port of combiner 404,
The other end of the first path of multiplex switch 14 connects LPWAN communication leg 13, and the one end in the second path of multiplex switch 14 connects
The second port of combiner 404 is connect, the other end in the second path of multiplex switch 14 connects the first frequency range access 402.
Wherein, multiplex switch 14 can be single-pole double-throw switch (SPDT) SPDT, the first end of single-pole double-throw switch (SPDT) SPDT and common end
Between be formed as first path, be formed as the second path between the second end and common end of single-pole double-throw switch (SPDT) SPDT.
It should be understood that when the first path conducting of multiplex switch 14 is the first end and public termination of single-pole double-throw switch (SPDT) SPDT
When logical, LPWAN communication leg 13 connects first antenna 11, i.e. antenna ANT2, when the second of multiplex switch 14 by first path
When path conducting is the second end and common end connection of single-pole double-throw switch (SPDT) SPDT, the first of Connectivity transceiver 401
Frequency range access 402 connects the second port of combiner 404 by the second path, and combiner 404 is connected to first antenna 11, i.e. day
Line ANT2.
LPWAN communication leg 13 and Connectivity communication leg 40 are made by single-pole double-throw switch (SPDT) SPDT as a result,
Common antenna ANT2 expands the communication capacity of electronic equipment thus, it is possible to which electronic equipment is made to realize LPWAN communication, moreover,
It is at low cost, be easily achieved without changing the original antenna structure of electronic equipment.
Telecommunication circuit based on the above embodiment, the application also proposed a kind of electronic equipment.
Fig. 8 is the block diagram according to the electronic equipment of the embodiment of the present application.As shown in figure 8, electronic equipment 200 includes
Foregoing telecommunication circuit 100.
According to the electronic equipment that the embodiment of the present application proposes, enables to electronic equipment to realize LPWAN communication, expand electronics
The communication capacity of equipment, it is at low cost, be easily achieved moreover, without changing the original antenna structure of electronic equipment.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present application, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (13)
1. a kind of telecommunication circuit characterized by comprising
First antenna；
First communication leg, first communication leg receive or send signal by the first antenna；
Low-power wide area network LPWAN communication leg, the LPWAN communication leg receive or send letter by the first antenna
Number；
Multiplex switch, the multiplex switch connect first communication leg, the first antenna and LPWAN communication branch
Road, the multiplex switch are connected to the first antenna for controlling the LPWAN communication leg or first communication leg, with
Share the first antenna.
2. telecommunication circuit according to claim 1, which is characterized in that first communication leg is cellular communication branch.
3. telecommunication circuit according to claim 2, which is characterized in that the cellular communication branch includes cellular communication transmitting-receiving
Device and RF front-end module, the multiplex switch are independent switching device, wherein the switching device have first path and
The one end in the second path, the first path of the switching device connects the first antenna, the first path of the switching device
The other end connect the LPWAN communication leg, the one end in the second path of the switching device connects the first antenna, institute
The other end for stating the second path of switching device connects the first port of the RF front-end module, the RF front-end module
Second port is also connected with the cellular communication transceiver.
4. telecommunication circuit according to claim 2, which is characterized in that the cellular communication branch includes cellular communication transmitting-receiving
Device and RF front-end module, the multiplex switch are the first path of switch unit in the RF front-end module, wherein described
One end of the first path of switch unit connects the first antenna, and the other end of the first path of the switch unit connects institute
LPWAN communication leg is stated, the switch unit also has the second path to the path N+1, the second path of the switch unit
The first antenna, the other end point in the second path to the path N+1 of the switch unit are connected to the one end in the path N+1
It is not correspondingly connected with the first end of N number of radio frequency path in the RF front-end module, the second end of N number of radio frequency path is also connected with
The cellular communication transceiver, N are positive integer.
5. telecommunication circuit according to claim 3 or 4, which is characterized in that the cellular communication transceiver connects processor
Cellular communication interface be connected, transmit I/Q signal between the cellular communication transceiver and the processor.
6. telecommunication circuit according to claim 1, which is characterized in that first communication leg is logical for Connectivity
Believe branch.
7. telecommunication circuit according to claim 6, which is characterized in that the Connectivity communication leg includes
Connectivity transceiver, the first frequency range access, the second frequency range access and combiner, the first port connection of the combiner
The first antenna, the second port of the combiner connect one end of the first frequency range access, the third of the combiner
Port connects one end of the second frequency range access, and the first frequency range access is connected with the other end of the second frequency range access
The Connectivity transceiver, the multiplex switch are connected between the first frequency range access and the combiner,
In, the multiplex switch has first path and the second path, and one end of the first path of the multiplex switch connects the conjunction
The other end of the second port of road device, the first path of the multiplex switch connects the LPWAN communication leg, and the multiplexing is opened
The one end in the second path closed connects the second port of the combiner, the other end connection in the second path of the multiplex switch
The first frequency range access.
8. telecommunication circuit according to claim 7, which is characterized in that the Connectivity transceiver connects processor
Connectivity communication interface be connected, between the Connectivity communication transceiver and the processor transmit IQ letter
Number.
9. telecommunication circuit according to claim 6, which is characterized in that the Connectivity communication leg is for receiving
At least one of or send radiofrequency signal, BT signal, GPS signal and FM signal.
10. telecommunication circuit according to claim 1, which is characterized in that the LPWAN communication leg includes LPWAN transmitting-receiving
Device, wherein the LPWAN transceiver connects the multiplex switch, and the number that the LPWAN transceiver is also connected with processor connects
Mouthful, digital signal is transmitted between the LPWAN transceiver and the processor.
11. telecommunication circuit according to claim 10, which is characterized in that the LPWAN communication leg further includes microcontroller
Chip, the microcontroller chip are connected between the LPWAN transceiver and the processor.
12. telecommunication circuit according to claim 10, which is characterized in that the LPWAN transceiver carry out LoRa or
Sigfox wireless transmission.
13. a kind of electronic equipment, which is characterized in that including telecommunication circuit described according to claim 1 any one of -12.
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| CN201910548430.XA CN110266327B (en) | 2019-06-24 | 2019-06-24 | Communication circuit and electronic device having the same |
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| CN201910548430.XA CN110266327B (en) | 2019-06-24 | 2019-06-24 | Communication circuit and electronic device having the same |
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| CN110266327B CN110266327B (en) | 2021-07-30 |
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| CN112134591A (en) * | 2020-09-24 | 2020-12-25 | Oppo广东移动通信有限公司 | Radio frequency circuit, control method of radio frequency circuit and electronic equipment |
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| Publication number | Publication date |
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| CN110266327B (en) | 2021-07-30 |
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