CN110120825A - RF front-end circuit and electronic equipment - Google Patents
RF front-end circuit and electronic equipment Download PDFInfo
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- CN110120825A CN110120825A CN201910472655.1A CN201910472655A CN110120825A CN 110120825 A CN110120825 A CN 110120825A CN 201910472655 A CN201910472655 A CN 201910472655A CN 110120825 A CN110120825 A CN 110120825A
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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
- H04B1/38—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
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Abstract
The embodiment of the present application discloses a kind of RF front-end circuit and electronic equipment, which includes processor, LPWAN communication module, cellular transceiver module, connection transceiver module, cellular front-end modules, first filter, second filter, third filter, combiner, first antenna, the second antenna and third antenna；The first end of the digital interface connection LPWAN communication module of processor, the first end of the second end connection first filter of LPWAN communication module, the second end of first filter connect first antenna；LPWAN communication module receives the signal of LPWAN frequency range by first antenna.The embodiment of the present application can support the signal transmitting and receiving of LPWAN.
Description
Technical field
This application involves fields of communication technology, and in particular to a kind of RF front-end circuit and electronic equipment.
Background technique
Currently, the technology of the RF front-end circuit of the electronic equipments such as mobile phone is all based on cellular network and short-range radio frequency (ratio
Such as, WIFI, bluetooth, GPS, frequency modulation(PFM)) etc. do technological improvement.The improvement of long range radio frequency in electronic equipment, then rarely have and relate to
And.
Summary of the invention
The embodiment of the present application provides a kind of RF front-end circuit and electronic equipment, can support the signal transmitting and receiving of LPWAN.
In a first aspect, the embodiment of the present application provides a kind of RF front-end circuit, the RF front-end circuit include processor,
Low-power Wide Area Network LPWAN communication module, cellular transceiver module, connection transceiver module, cellular front-end modules, the first filtering
Device, second filter, third filter, combiner, first antenna, the second antenna and third antenna, the processor include number
Word interface, cellular modem and connection modem；
The digital interface of the processor connects the first end of the LPWAN communication module, and the LPWAN communicates mould
The second end of block connects the first end of the first filter, and the second end of the first filter connects the first antenna；
The cellular modem of the processor connects the first end of the cellular transceiver module, the honeycomb
The second end of transceiver module connects the first end of the cellular front-end modules, and the second end of the cellular front-end modules connects institute
State the second antenna；
The connection modem of the processor connects the first end of the connection transceiver module, and the connection is received
The first end of the second end connection second filter of module is sent out, the second end of the second filter connects the of the combiner
One end, the first end of the third end connection third filter of the connection transceiver module, the second end of the third filter connect
The second end of the combiner is connect, the third end of the combiner connects the third antenna；
The LPWAN communication module receives the signal of LPWAN frequency range by the first antenna.
Second aspect, the embodiment of the present application provide a kind of RF front-end circuit, and the RF front-end circuit includes processing
Device, low-power Wide Area Network LPWAN communication module, cellular transceiver module, connection transceiver module, cellular front-end modules, first
Filter, second filter, third filter, combiner, first antenna and the second antenna, the processor connect including number
Mouth, cellular modem and connection modem；
The cellular modem of the processor connects the first end of the cellular transceiver module, the honeycomb
The second end of transceiver module connects the first end of the cellular front-end modules, and the second end of the cellular front-end modules connects institute
State first antenna；
The digital interface of the processor connects the first end of the LPWAN communication module, and the LPWAN communicates mould
The second end of block connects the first end of the first filter, and the second end of the first filter connects the of the combiner
One end；
The connection modem of the processor connects the first end of the connection transceiver module, and the connection is received
The first end of the second end connection second filter of module is sent out, the second end of the second filter connects the of the combiner
Two ends, the first end of the third end connection third filter of the connection transceiver module, the second end of the third filter connect
The third end of the combiner is connect, the 4th end of the combiner connects second antenna；
The LPWAN communication module receives the signal of LPWAN frequency range by second antenna.
The third aspect, the embodiment of the present application provide a kind of RF front-end circuit, the RF front-end circuit include processor,
Low-power Wide Area Network LPWAN communication module, cellular transceiver module, connection transceiver module, cellular front-end modules, the first filtering
Device, second filter, third filter, the first combiner, the second combiner, first antenna and the second antenna, the processor
Including digital interface, cellular modem and connection modem；
The cellular modem of the processor connects the first end of the cellular transceiver module, the honeycomb
The second end of transceiver module connects the first end of the cellular front-end modules, and the second end of the cellular front-end modules connects institute
State the first end of the first combiner；
The digital interface of the processor connects the first end of the LPWAN communication module, and the LPWAN communicates mould
The second end of block connects the first end of the first filter, and the second end of the first filter connects first combiner
Second end, the third end of first combiner connects the first antenna；
The connection modem of the processor connects the first end of the connection transceiver module, and the connection is received
The first end of the second end connection second filter of module is sent out, the second end of the second filter connects second combiner
First end, it is described connection transceiver module third end connection third filter first end, the second of the third filter
End connects the second end of second combiner, and the third end of second combiner connects second antenna；
The LPWAN communication module receives the signal of LPWAN frequency range by the first antenna.
Fourth aspect, the embodiment of the present application provide a kind of electronic equipment, wherein the electronic equipment include memory,
RF front-end circuit described in external equipment and above-mentioned first aspect or second aspect or the third aspect.
As can be seen that RF front-end circuit described in the embodiment of the present application, including processor, low-power Wide Area Network
LPWAN communication module, cellular transceiver module, connection transceiver module, cellular front-end modules, first filter, second filter,
Third filter, combiner, first antenna, the second antenna and third antenna, processor include digital interface, cellular modem
Device and connection modem；The first end of the digital interface connection LPWAN communication module of processor, LPWAN communication module
Second end connects the first end of first filter, and the second end of first filter connects first antenna；The honeycomb of processor is modulated
Demodulator connects the first end of cellular transceiver module, and the second end of cellular transceiver module connects the first of cellular front-end modules
The second end at end, cellular front-end modules connects the second antenna；The connection modem connection connection transceiver module of processor
First end, connects the first end of the second end connection second filter of transceiver module, and the second end of second filter connects combining
The first end of device connects the first end of the third end connection third filter of transceiver module, the second end connection of third filter
The third end of the second end of combiner, combiner connects third antenna；LPWAN communication module receives LPWAN by first antenna
The signal of frequency range.Implement the embodiment of the present application, it is described by increasing LPWAN communication module, first filter and first antenna
LPWAN communication module receives the signal of LPWAN frequency range by the first antenna, can support the signal transmitting and receiving of LPWAN.At it
On the basis of preceding RF front-end circuit, it is only necessary to increase corresponding communication module and the signal receipts of LPWAN can be realized in antenna
Hair, the change of software protocol are smaller.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of RF front-end circuit disclosed in the embodiment of the present application；
Fig. 2 is the structural schematic diagram of another kind RF front-end circuit disclosed in the embodiment of the present application；
Fig. 3 is the structural schematic diagram of another kind RF front-end circuit disclosed in the embodiment of the present application；
Fig. 4 is the structural schematic diagram of another kind RF front-end circuit disclosed in the embodiment of the present application；
Fig. 5 is the structural schematic diagram of a kind of electronic equipment disclosed in the embodiment of the present application.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first " in above-mentioned attached drawing, " second " etc. are for distinguishing
Different objects, are not use to describe a particular order.In addition, term " includes " and " having " and their any deformations, it is intended that
It is to cover and non-exclusive includes.Such as it contains process, system, product or the equipment of a series of steps or units and does not limit
In listed step or unit, but optionally further comprising the step of not listing or unit, or optionally further comprising for
Other intrinsic step or units of these processes, product or equipment.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Electronic equipment involved by the embodiment of the present application may include the various handheld devices with wireless communication function,
Mobile unit, wearable device calculate equipment or are connected to other processing equipments and various forms of radio modem
User equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal device (terminal
Device) etc..For convenience of description, apparatus mentioned above is referred to as electronic equipment.
It describes in detail below to the embodiment of the present application.
Referring to Figure 1, Fig. 1 is a kind of structural schematic diagram of RF front-end circuit, the radio frequency disclosed in the embodiment of the present application
Front-end circuit 100 includes processor 101, low-power Wide Area Network LPWAN communication module 102, cellular transceiver module 103, connects
Connect transceiver module 104, cellular front-end modules 105, first filter 106, second filter 107, third filter 108, combining
Device 109, first antenna 110, the second antenna 111 and third antenna 112, processor 101 include digital interface 1011, honeycomb modulation
Demodulator 1012 and connection modem 1013；
The digital interface 1011 of processor 101 connects the first end of LPWAN communication module 102, LPWAN communication module 102
Second end connection first filter 106 first end, the second end of first filter 106 connects first antenna 110；
The cellular modem 1012 of processor 101 connects the first end of cellular transceiver module 103, cellular transceiver
The first end of the second end connection cellular front-end modules 105 of module 103, the second end of cellular front-end modules 105 connect second day
Line 111；
The connection modem 1013 of processor 101 connects the first end of the connection transceiver module 104, connection transmitting-receiving mould
The first end of the second end connection second filter 107 of block 104, the of the second end connection combiner 109 of second filter 107
One end, the first end of the third end connection third filter 108 of connection transceiver module 104, the second end of third filter 108 connect
The second end of combiner 109 is connect, the third end of combiner 109 connects third antenna 112；
LPWAN communication module 102 receives the signal of LPWAN frequency range by first antenna 110.
In the embodiment of the present application, processor 101 is in addition to including cellular modem (Celluar modem), connection tune
It can also include processing except modulator-demodulator (Connectivity modem) and digital interface (digital interface)
Module 1014, processing module 1014 can be used for the signal to the cellular communication band of transmitting-receiving, the signal of LPWAN frequency range, connection
The signal of communications band is handled.Processor 101 can by digital interface 1011 receive first antenna 110 be transmitted through come
The signal of LPWAN frequency range, processor 101 can also be by digital interfaces 1011 by the LPWAN frequency range after ovennodulation, coding
Signal is sent by first antenna 110.Similar, processor 101 can receive the by cellular modem 1012
Two antennas 111 are transmitted through the signal of the cellular communication band come, and processor 101 can also will be through by cellular modem 1012
The signal of cellular communication band after ovennodulation, coding is sent by the second antenna 111.Processor 101 can pass through company
It connects modem 1013 and receives the signal that third antenna 112 is transmitted through the connection communication frequency range come, processor 101 can also pass through
Connection modem 1013 sends out the signal of the connection communication frequency range after ovennodulation, coding by third antenna 112
It goes.
In the embodiment of the present application, cellular communication band may include 2G frequency range, 3G frequency range, 4G frequency range, appointing in 5G frequency range
It is a kind of.LPWAN frequency range may include (Industrial the Scientific Medical, ISM) of industrial-scientific-medicine
It is less than the frequency range of 1GHz in frequency range.Connection communication frequency range may include 2.4G frequency range or 5G frequency range.Cellular communication band and LPWAN
Frequency range can be overlapped, and can not also be overlapped.
In the embodiment of the present application, processor 101 is when handling the signal of LPWAN frequency range, the digital interface of processor 101
1011, LPWAN communication module 102, first filter 106, LPWAN communication link can be formed between first antenna 110.First
Filter 106 can be bandpass filter, and the band logical of first filter 106 includes LPWAN frequency range, can permit LPWAN frequency range
Signal pass through.
In the embodiment of the present application, processor 101 is when handling the signal of cellular communication band, the honeycomb tune of processor 101
Modulator-demodulator 1012, cellular transceiver module 103, cellular front-end modules 105, that honeycomb can be formed between the second antenna 111 is logical
Believe link.Cellular front-end modules 105 may include filter.Filter in cellular front-end modules 105 can be bandpass filtering
Device, the band logical of bandpass filter include cellular communication band, and the signal that can permit cellular communication band passes through.
In the embodiment of the present application, processor 101 is in the signal of connection communication frequency range, the connection modulatedemodulate of processor 101
It adjusts device 1013, connection transceiver module 104, second filter 107, combiner 109, first can be formed between third antenna 112
Connection communication link (for example, 2.4G communication link)；Connection modem 1013, the connection transceiver module of processor 101
104, third filter 108, combiner 109, the second connection communication link can be formed (for example, 5G is logical between third antenna 112
Believe link)；Second filter 107 and third filter 108 can be bandpass filter, the band logical packet of second filter 107
The first connection communication frequency range (for example, 2.4G communications band) is included, the signal that can permit the first connection communication frequency range passes through；Third
The band logical of filter 108 includes the second connection communication frequency range (for example, 5G communications band), can permit the second connection communication frequency range
Signal pass through.Wherein, the first connection communication link is different connection communication links, the second filter from the second connection communication link
The band logical of the band logical of wave device 107 and third filter 108 is different, the first connection communication frequency range and the second connection communication frequency range not phase
Together.
In the embodiment of the present application, in signal transmitting, combiner 109 can be by the signal of the first connection communication frequency range and the
The signal of two connection communication frequency ranges is combined and is exported to third antenna 112, and two-way letter can be realized by combiner 109
Number while emit.When signal receives, combiner 109 can be by the received first connection communication frequency range of third antenna 112
Signal inputs the first connection communication link, the signal of the received second connection communication frequency range of third antenna 112 can be inputted the
Two connection communication links receive while can realizing two paths of signals by combiner 109.
In the embodiment of the present application, 1012 phase of cellular modem of the cellular transceiver module 103 and processor 101
Even, the signal of the cellular communication band transmitted between cellular transceiver module 103 and cellular modem 1012 is with mutually just
Hand over (in-phase quadrature, IQ) signal；The connection modem of the connection transceiver module 104 and processor 101
1013 are connected, and connecting the signal of connection communication frequency range that transceiver module 104 and connecting transmits between modem 1013 can be with
For I/Q signal；Frequency range utilization rate can be improved in transmission I/Q signal.Cellular transceiver module 103 and connection transceiver module 104 and place
It manages and is connected between device 101 by analog interface, connection reliability can be improved.The LPWAN communication module 102 and processor
101 digital interface 1011 is connected, by specific between the digital interface 1011 of LPWAN communication module 102 and processor 101
Digital interface protocol transmits signal, and digital interface protocol may include universal asynchronous receiving-transmitting transmitter (Universal
Asynchronous Receiver/Transmitter, UART) digital interface protocol, Serial Peripheral Interface (SPI) (Serial
Peripheral Interface, SPI) digital interface protocol etc..Using digital interface, anti-electromagnetic interference capability can be improved.
In the embodiment of the present application, low-power Wide Area Network (Low-Power Wide-Area Network, LPWAN) communication
Module 102 may include electric (long range radio, the LoRa) communication module of remote-wireless or Sigfox communication module.
LPWAN communication module 102 can receive the signal of LPWAN frequency range by first antenna 110.LPWAN in the embodiment of the present application
Frequency range is less than 1GHz in (Industrial Scientific Medical, ISM) frequency range using industrial-scientific-medicine
Frequency range, the connection communications frequency range such as WiFi frequency range, Bluetooth band can be avoided, avoid the interference with connection communication frequency range.ISM frequency
Section be various countries move out a certain section of frequency range mainly it is open to industry, science and medical facility use without licensing or the frequency of expense
Section.User only needs to abide by certain transmission power (generally below 1W), and not interfere to other frequency ranges.
Regulation and disunity of the ISM band in various countries.For example, the U.S. there are three frequency range 902-928MHz, 2400-2484.5MHz and
5725-5850MHz；Then there is part for gsm communication in the frequency range of European 900MHz.And 2.4GHz is the common ISM frequency in various countries
Section.
LoRa is the low-power consumption local area network wireless standard of semtech company creation.The LoRa's that the embodiment of the present application summarizes
Working frequency range be ISM band in be less than 1GHz frequency range, such as LoRa working frequency range may include 433MHz, 868MHz,
The Sub-1G frequency range such as 915MHz.For the consensus standard that LoRa is used for IEEE802.15.4g, the modulation system of LoRa is based on spread spectrum skill
Art is a mutation of linear modulation spread spectrum (Chirp Spread Spectrum, CSS), has forward error correction (Forward
Error Correction, FEC) ability.LoRa uses 128 Advanced Encryption Standard (Advanced Encryption
Standard, AES) encryption, guarantee the safety of LoRa communication.
Ultra-narrow band is utilized in Sigfox, and transmission power consumption levels are very low, and still can maintain a stable data connection.
Sigfox Radio Link uses the ISM radio frequency band for exempting from authorization.Frequency is different according to national legislation.For example, European wide
It is general to use 868MHz, it is 915MHz in the U.S..The density (being based on average distance) of unit is lower in Sigfox network.In rural area
Area about 30-50km is often having more barriers and noise distance to be likely to reduced between 3-10km in city.Entirely
Sigfox network topology is expansible, high capacity a network, have low-down energy consumption, while keep simply and
It is easy to the infrastructure based on star-like unit disposed.For Sigfox using ultra-narrow band radio modulation, Sigfox can be in common frequency
RI radio intelligence exchange is carried out in the 200kHz frequency range of section.The width of every message is 100Hz, per second according to the difference in region
Clock transmits 100 or 600 data.Therefore, while to noise resistance, the distance communication grown may be implemented very much.Sigfox is fixed
The agreement of a lightweight has been made to handle small data-message, the energy power consumption of electronic equipment can be saved.Sigfox can expire
The demand of sufficient magnanimity Internet of Things application.When electronic equipment is communicated using Sigfox communication module, low in energy consumption, equipment cost
Low, connection charge is low, and network capacity is high, long transmission distance.
Implement the embodiment of the present application, by increasing LPWAN communication module, first filter and first antenna, LPWAN communication
Module receives the signal of LPWAN frequency range by first antenna, can support the signal transmitting and receiving of LPWAN.In radio-frequency front-end before
On the basis of circuit, it is only necessary to increase corresponding communication module and antenna can LPWAN signal transmitting and receiving, the change of software protocol
It is smaller.
Optionally, as shown in Fig. 2, LPWAN communication module 102 include microprocessor (Microcontroller Unit,
MCU) 1021 and LPWAN transceiver module 1022；The digital interface 1011 of the first end connection processor 101 of MCU1021,
The first end of the second end connection LPWAN transceiver module 1022 of MCU1021, the second end connection the of LPWAN transceiver module 1022
The first end of one filter 106.
Wherein, LPWAN communication module 102 has certain control function, and MCU1021 can control LPWAN transceiver module
1022 opening and closing can control the signal that LPWAN transceiver module 1022 receives and dispatches LPWAN frequency range.
Optionally, LPWAN communication module 102 can only include LPWAN transceiver module 1022.
Wherein, LPWAN communication module 102 does not have control function, is only responsible for the transmitting-receiving of the signal of LPWAN frequency range.
In the embodiment of the present application, the working frequency range of first antenna 110 includes the frequency range of LPWAN, the work of the second antenna 111
Frequency range includes the frequency range of cellular communication standard, and the working frequency range of third antenna 112 includes 2.4G frequency range and 5G frequency range.
Fig. 3 is referred to, Fig. 3 is the structural schematic diagram of another kind RF front-end circuit disclosed in the embodiment of the present application, this is penetrated
Frequency front-end circuit 100 include processor 101, low-power Wide Area Network LPWAN communication module 102, cellular transceiver module 103,
It connects transceiver module 104, cellular front-end modules 105, first filter 106, second filter 107, third filter 108, close
Road device 109, first antenna 110 and the second antenna 111, processor 101 include digital interface 1011, cellular modem 1012
With connection modem 1013；
The cellular modem 1012 of processor 101 connects the first end of cellular transceiver module 103, cellular transceiver
The first end of the second end connection cellular front-end modules 105 of module 103, the second end of cellular front-end modules 105 connect first day
Line 110；
The digital interface 1011 of processor 101 connects the first end of LPWAN communication module 102, LPWAN communication module 102
Second end connection first filter 106 first end, first filter 106 second end connection combiner 109 first end；
The connection modem 1013 of processor 101 connects the first end of the connection transceiver module 104, connection transmitting-receiving mould
The first end of the second end connection second filter 107 of block 104, the of the second end connection combiner 109 of second filter 107
Two ends, the first end of the third end connection third filter 108 of connection transceiver module 104, the second end of third filter 108 connect
The third end of combiner 109 is connect, the 4th end of combiner 109 connects the second antenna 111；
LPWAN communication module 102 receives the signal of LPWAN frequency range by the second antenna 111.
In the embodiment of the present application, processor 101 is in addition to including cellular modem (Celluar modem), connection tune
It can also include processing except modulator-demodulator (Connectivity modem) and digital interface (digital interface)
Module 1014, processing module 1014 can be used for the signal to the cellular communication band of transmitting-receiving, the signal of LPWAN frequency range, connection
The signal of communications band is handled.Processor 101 can by digital interface 1011 receive the second antenna 111 be transmitted through come
The signal of LPWAN frequency range, processor 101 can also be by digital interfaces 1011 by the LPWAN frequency range after ovennodulation, coding
Signal is sent by the second antenna 111.Similar, processor 101 can receive the by cellular modem 1012
One antenna 110 is transmitted through the signal of the cellular communication band come, and processor 101 can also will be through by cellular modem 1012
The signal of cellular communication band after ovennodulation, coding is sent by first antenna 110.Processor 101 can pass through company
It connects modem 1013 and receives the signal that the second antenna 111 is transmitted through the connection communication frequency range come, processor 101 can also pass through
Connection modem 1013 sends out the signal of the connection communication frequency range after ovennodulation, coding by the second antenna 111
It goes.
In the embodiment of the present application, cellular communication band may include 2G frequency range, 3G frequency range, 4G frequency range, appointing in 5G frequency range
It is a kind of.LPWAN frequency range may include (Industrial the Scientific Medical, ISM) of industrial-scientific-medicine
It is less than the frequency range of 1GHz in frequency range.Connection communication frequency range may include 2.4G frequency range or 5G frequency range.It should be noted that connection is logical
Letter frequency range is not overlapped with LPWAN frequency range, and the frequency range of the multiple signals of same combiner connection cannot be overlapped, to avoid between signal
Interference.
Wherein, for processor 101 when handling the signal of LPWAN frequency range, the digital interface 1011 of processor 101, LPWAN are logical
Letter module 102, combiner 109, can form LPWAN communication link between the second antenna 111 at first filter 106.First filter
Wave device 106 can be bandpass filter, and the band logical of first filter 106 includes LPWAN frequency range, can permit LPWAN frequency range
Signal passes through.
Processor 101 is when handling the signal of cellular communication band, the cellular modem 1012 of processor 101, bee
Nest transceiver module 103, cellular front-end modules 105 can form cellular communication link between first antenna 110.Cellular front end
Module 105 may include filter.Filter in cellular front-end modules 105 can be bandpass filter, bandpass filter
Band logical includes cellular communication band, and the signal that can permit cellular communication band passes through.
Processor 101 in the signal of connection communication frequency range, receive by the connection modem 1013 of processor 101, connection
Hair module 104, combiner 109, can form the first connection communication link (ratio between the second antenna 111 at second filter 107
Such as, 2.4G communication link)；The connection modem 1013 of processor 101, connection transceiver module 104, third filter 108,
The second connection communication link (for example, 5G communication link) can be formed between combiner 109, the second antenna 111；Second filter
107 and third filter 108 can be bandpass filter, the band logical of second filter 107 includes the first connection communication frequency range
(for example, 2.4G communications band), the signal that can permit the first connection communication frequency range pass through；The band logical packet of third filter 108
The second connection communication frequency range (for example, 5G communications band) is included, the signal that can permit the second connection communication frequency range passes through.Wherein,
First connection communication link and the second connection communication link are different connection communication links, the band logical of second filter 107 and
The band logical of third filter 108 is different, and the first connection communication frequency range and the second connection communication frequency range be not identical.
In the embodiment of the present application, in signal transmitting, combiner 109 can be by the signal of the first connection communication frequency range, the
The signal of two connection communication frequency ranges and the signal of LPWAN frequency range are combined and are exported to the second antenna 111, and conjunction can be passed through
Road device 109 emits while realizing three road signals.When signal receives, combiner 109 can be by the second antenna 111 received the
The signal of one connection communication frequency range inputs the first connection communication link, can be by received second connection communication of the second antenna 111
The signal of frequency range inputs the second connection communication link, the signal of the received LPWAN frequency range of the second antenna 111 can be inputted
LPWAN communication link receives while can realizing three road signals by combiner 109.
The cellular transceiver module 103 is connected with the cellular modem 1012 of processor 101, cellular transceiver mould
The signal of the cellular communication band transmitted between block 103 and cellular modem 1012 is inphase quadrature (in-phase
Quadrature, IQ) signal；The connection transceiver module 104 is connected with the connection modem 1013 of processor 101, even
Connecing transceiver module 104 and connecting the signal for the connection communication frequency range transmitted between modem 1013 can be I/Q signal；It passes
Frequency range utilization rate can be improved in defeated I/Q signal.Between cellular transceiver module 103 and connection transceiver module 104 and processor 101
It is connected by analog interface, connection reliability can be improved.The digital interface of the LPWAN communication module 102 and processor 101
1011 are connected, and pass through specific digital interface protocol between the digital interface 1011 of LPWAN communication module 102 and processor 101
Signal is transmitted, digital interface protocol may include universal asynchronous receiving-transmitting transmitter (Universal Asynchronous
Receiver/Transmitter, UART) digital interface protocol, Serial Peripheral Interface (SPI) (Serial Peripheral
Interface, SPI) digital interface protocol etc..Using digital interface, anti-electromagnetic interference capability can be improved.
In the embodiment of the present application, low-power Wide Area Network (Low-Power Wide-Area Network, LPWAN) communication
Module 102 may include electric (long range radio, the LoRa) communication module of remote-wireless or Sigfox communication module.
In the embodiment of the present application, the working frequency range of the first antenna 110 includes the frequency range of cellular communication standard, and described
The working frequency range of two antennas 111 includes the LPWAN frequency range, 2.4G frequency range and 5G frequency range.
In the embodiment of the present application, the LPWAN frequency range includes Sub-1G frequency range, such as in 433MHz, 868MHz, 915MHz
It is any.
In the embodiment of the present application, by increasing LPWAN communication module and first filter, LPWAN communication module passes through the
Two antennas receive the signal of LPWAN frequency range, can support the signal transmitting and receiving of LPWAN, LPWAN communication module with connect transceiver module
Share same root antenna reduces hardware cost, saves the additional antenna cloth of electronic equipment without increasing additional antenna
Map space.On the basis of RF front-end circuit before, it is only necessary to increase LPWAN communication module and first filter can be real
The signal transmitting and receiving of existing LPWAN.
Fig. 4 is referred to, Fig. 4 is the structural schematic diagram of another kind RF front-end circuit disclosed in the embodiment of the present application, this is penetrated
Frequency front-end circuit 100 include processor 101, low-power Wide Area Network LPWAN communication module 102, cellular transceiver module 103,
Connect transceiver module 104, cellular front-end modules 105, first filter 106, second filter 107, third filter 108, the
One combiner 109, the second combiner 112, first antenna 110 and the second antenna 111, processor 101 include digital interface 1011,
Cellular modem 1012 and connection modem 1013；
The cellular modem 1012 of processor 101 connects the first end of cellular transceiver module 103, cellular transceiver
The first end of the second end connection cellular front-end modules 105 of module 103, the second end connection first of cellular front-end modules 105 are closed
The first end of road device 109；
The digital interface 1011 of processor 101 connects the first end of LPWAN communication module 102, LPWAN communication module 102
Second end connection first filter 106 first end, the second end of first filter 106 connects the of the first combiner 109
The third end at two ends, the first combiner 109 connects first antenna 110；
The connection modem 1013 of processor 101 connects the first end of the connection transceiver module 104, connection transmitting-receiving mould
The first end of the second end connection second filter 107 of block 104, the second end of second filter 107 connect the second combiner 112
First end, connection transceiver module 104 third end connection third filter 108 first end, the second of third filter 108
The second end of the second combiner 112 of end connection, the third end of the second combiner 112 connect the second antenna 111；
LPWAN communication module 102 receives the signal of LPWAN frequency range by first antenna 110.
In the embodiment of the present application, processor 101 is in addition to including cellular modem (Celluar modem), connection tune
It can also include processing except modulator-demodulator (Connectivity modem) and digital interface (digital interface)
Module 1014, processing module 1014 can be used for the signal to the cellular communication band of transmitting-receiving, the signal of LPWAN frequency range, connection
The signal of communications band is handled.Processor 101 can by digital interface 1011 receive first antenna 110 be transmitted through come
The signal of LPWAN frequency range, processor 101 can also be by digital interfaces 1011 by the LPWAN frequency range after ovennodulation, coding
Signal is sent by first antenna 110.Similar, processor 101 can receive the by cellular modem 1012
One antenna 110 is transmitted through the signal of the cellular communication band come, and processor 101 can also will be through by cellular modem 1012
The signal of cellular communication band after ovennodulation, coding is sent by first antenna 110.Processor 101 can pass through company
It connects modem 1013 and receives the signal that the second antenna 111 is transmitted through the connection communication frequency range come, processor 101 can also pass through
Connection modem 1013 sends out the signal of the connection communication frequency range after ovennodulation, coding by the second antenna 111
It goes.
In the embodiment of the present application, cellular communication band may include 2G frequency range, 3G frequency range, 4G frequency range, appointing in 5G frequency range
It is a kind of.LPWAN frequency range may include being less than the frequency range of 1GHz in ISM band.Connection communication frequency range may include 2.4G frequency range or
5G frequency range.It should be noted that cellular communication band is not overlapped with LPWAN frequency range, that is, cellular communication standard does not support Sub-
The frequency range of 1G.The frequency range of the multiple signals of same combiner connection cannot be overlapped, to avoid the interference between signal.
Wherein, for processor 101 when handling the signal of LPWAN frequency range, the digital interface 1011 of processor 101, LPWAN are logical
Letter module 102, the first combiner 109, can form LPWAN communication link between first antenna 110 at first filter 106.The
One filter 106 can be bandpass filter, and the band logical of first filter 106 includes LPWAN frequency range, can permit LPWAN frequency
The signal of section passes through.
Processor 101 is when handling the signal of cellular communication band, the cellular modem 1012 of processor 101, bee
Nest transceiver module 103, the first combiner 109, can form cellular communication between first antenna 110 at cellular front-end modules 105
Link.Cellular front-end modules 105 may include filter.Filter in cellular front-end modules 105 can be bandpass filter,
The band logical of bandpass filter includes cellular communication band, and the signal that can permit cellular communication band passes through.
Processor 101 in the signal of connection communication frequency range, receive by the connection modem 1013 of processor 101, connection
Hair module 104, the second combiner 112, can form the first connection communication link between the second antenna 111 at second filter 107
(for example, 2.4G communication link)；Connection modem 1013, the connection transceiver module 104, third filter of processor 101
108, the second connection communication link (for example, 5G communication link) can be formed between the second combiner 112, the second antenna 111；The
Two filters 107 and third filter 108 can be bandpass filter, and the band logical of second filter 107 includes the first connection
Communications band (for example, 2.4G communications band), the signal that can permit the first connection communication frequency range pass through；Third filter 108
Band logical include the second connection communication frequency range (for example, 5G communications band), the signal that can permit the second connection communication frequency range is logical
It crosses.Wherein, the first connection communication link is different connection communication links, second filter 107 from the second connection communication link
Band logical and third filter 108 band logical it is different, the first connection communication frequency range and the second connection communication frequency range be not identical.
In the embodiment of the present application, in signal transmitting, the first combiner 109 can be by the signal and honeycomb of LPWAN frequency range
The signal of communications band is combined and is exported to first antenna 110, can realize two road signals by the first combiner 109
While emit；Second combiner 112 can close the signal of the signal of the first connection communication frequency range, the second connection communication frequency range
It together and exports to the second antenna 111, emits while can realizing two road signals by the second combiner 112.In signal
When reception, the signal of the received LPWAN frequency range of first antenna 110 can be inputted LPWAN communication link by the first combiner 109,
The signal of the received cellular communication band of first antenna 110 can be inputted into cellular communication link.Second combiner 112 can incite somebody to action
The signal of the received first connection communication frequency range of second antenna 111 inputs the first connection communication link, can be by the second antenna 111
The signal of received second connection communication frequency range inputs the second connection communication link, can realize two by the second combiner 112
It is received while the signal of road.
The cellular transceiver module 103 is connected with the cellular modem 1012 of processor 101, cellular transceiver mould
The signal of the cellular communication band transmitted between block 103 and cellular modem 1012 is inphase quadrature (in-phase
Quadrature, IQ) signal；The connection transceiver module 104 is connected with the connection modem 1013 of processor 101, even
Connecing transceiver module 104 and connecting the signal for the connection communication frequency range transmitted between modem 1013 can be I/Q signal；It passes
Frequency range utilization rate can be improved in defeated I/Q signal.Between cellular transceiver module 103 and connection transceiver module 104 and processor 101
It is connected by analog interface, connection reliability can be improved.The digital interface of the LPWAN communication module 102 and processor 101
1011 are connected, and pass through specific digital interface protocol between the digital interface 1011 of LPWAN communication module 102 and processor 101
Signal is transmitted, digital interface protocol may include universal asynchronous receiving-transmitting transmitter (Universal Asynchronous
Receiver/Transmitter, UART) digital interface protocol, Serial Peripheral Interface (SPI) (Serial Peripheral
Interface, SPI) digital interface protocol etc..Using digital interface, anti-electromagnetic interference capability can be improved.
In the embodiment of the present application, low-power Wide Area Network (Low-Power Wide-Area Network, LPWAN) communication
Module 102 may include electric (long range radio, the LoRa) communication module of remote-wireless or Sigfox communication module.
The working frequency range of the first antenna 110 includes the frequency range and the LPWAN frequency range of cellular communication standard, and described
The working frequency range of two antennas 111 includes 2.4G frequency range and 5G frequency range.
In the embodiment of the present application, by increasing LPWAN communication module and first filter, LPWAN communication module passes through the
One antenna receives the signal of LPWAN frequency range, can support the signal transmitting and receiving of LPWAN, LPWAN communication module and cellular transceiver mould
Block shares same root antenna, without increasing additional antenna, reduces hardware cost, saves the additional antenna of electronic equipment
Layout space.On the basis of RF front-end circuit before, it is only necessary to increase LPWAN communication module and first filter
Realize the signal transmitting and receiving of LPWAN.
Referring to Fig. 5, Fig. 5 is the structural schematic diagram of a kind of electronic equipment disclosed in the embodiment of the present application.As shown in figure 5,
The electronic equipment 10 includes a kind of RF front-end circuit 100 of memory 201, external equipment 301 and above-mentioned Fig. 1.
Wherein, which can also include touching display screen, loudspeaker, microphone, random access memory
(Random Access Memory, RAM), camera and sensor etc..
Above-mentioned Fig. 5 is the possible structure of a kind of electronic equipment.Optionally, electronic equipment can also include memory,
External equipment and above-mentioned Fig. 2 any RF front-end circuit into Fig. 4.
Implement electronic equipment shown in fig. 5, by increasing LPWAN communication module, first filter and first antenna,
LPWAN communication module receives the signal of LPWAN frequency range by first antenna, can support the signal transmitting and receiving of LPWAN.Before
On the basis of RF front-end circuit, it is only necessary to increase corresponding communication module and antenna can LPWAN signal transmitting and receiving, software association
The change of view is smaller.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed device, it can be by another way
It realizes.For example, the apparatus embodiments described above are merely exemplary, such as the division of the unit, it is only a kind of
Logical function partition, there may be another division manner in actual implementation, such as multiple units or components can combine or can
To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit,
It can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
Memory in the embodiment of the present application may include: flash disk, read-only memory (English: Read-Only
Memory, referred to as: ROM), random access device (English: Random Access Memory, referred to as: RAM), disk or CD etc..
The embodiment of the present application is described in detail above, specific case used herein to the principle of the present invention and
Embodiment is expounded；At the same time, for those skilled in the art is being embodied according to the thought of the present invention
There will be changes in mode and application range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of RF front-end circuit, which is characterized in that the RF front-end circuit includes processor, low-power Wide Area Network
LPWAN communication module, cellular transceiver module, connection transceiver module, cellular front-end modules, first filter, second filter,
Third filter, combiner, first antenna, the second antenna and third antenna, the processor include digital interface, honeycomb modulation
Demodulator and connection modem；
The digital interface of the processor connects the first end of the LPWAN communication module, the LPWAN communication module
Second end connects the first end of the first filter, and the second end of the first filter connects the first antenna；
The cellular modem of the processor connects the first end of the cellular transceiver module, the honeycomb transmitting-receiving
The second end of device module connects the first end of the cellular front-end modules, the second end connection of the cellular front-end modules described the
Two antennas；
The connection modem of the processor connects the first end of the connection transceiver module, and mould is received and dispatched in the connection
The first end of the second end connection second filter of block, the second end of the second filter connect the first of the combiner
End, the first end of the third end connection third filter of the connection transceiver module, the second end connection of the third filter
The third end of the second end of the combiner, the combiner connects the third antenna；
The LPWAN communication module receives the signal of LPWAN frequency range by the first antenna.
2. RF front-end circuit according to claim 1, which is characterized in that the LPWAN communication module includes micro process
Device MCU and LPWAN transceiver module；The first end of the MCU connects the digital interface of the processor, and the of the MCU
Two ends connect the first end of the LPWAN transceiver module, and the second end of the LPWAN transceiver module connects the first filter
First end.
3. RF front-end circuit according to claim 1, which is characterized in that the LPWAN communication module includes that LPWAN is received
Send out module.
4. described in any item RF front-end circuits according to claim 1~3, which is characterized in that the work of the first antenna
Frequency range includes the frequency range of the LPWAN, and the working frequency range of second antenna includes the frequency range of cellular communication standard, the third
The working frequency range of antenna includes 2.4G frequency range and 5G frequency range.
5. a kind of RF front-end circuit, which is characterized in that the RF front-end circuit includes processor, low-power Wide Area Network
LPWAN communication module, cellular transceiver module, connection transceiver module, cellular front-end modules, first filter, second filter,
Third filter, combiner, first antenna and the second antenna, the processor include digital interface, cellular modem and
Connect modem；
The cellular modem of the processor connects the first end of the cellular transceiver module, the honeycomb transmitting-receiving
The second end of device module connects the first end of the cellular front-end modules, the second end connection of the cellular front-end modules described the
One antenna；
The digital interface of the processor connects the first end of the LPWAN communication module, the LPWAN communication module
Second end connects the first end of the first filter, and the second end of the first filter connects the first of the combiner
End；
The connection modem of the processor connects the first end of the connection transceiver module, and mould is received and dispatched in the connection
The first end of the second end connection second filter of block, the second end of the second filter connect the second of the combiner
End, the first end of the third end connection third filter of the connection transceiver module, the second end connection of the third filter
4th end at the third end of the combiner, the combiner connects second antenna；
The LPWAN communication module receives the signal of LPWAN frequency range by second antenna.
6. RF front-end circuit according to claim 5, which is characterized in that the working frequency range of the first antenna includes bee
The frequency range of nest communication standard, the working frequency range of second antenna include the LPWAN frequency range, 2.4G frequency range and 5G frequency range.
7. RF front-end circuit according to claim 6, which is characterized in that the LPWAN frequency range includes Sub-1G frequency range.
8. a kind of RF front-end circuit, which is characterized in that the RF front-end circuit includes processor, low-power Wide Area Network
LPWAN communication module, cellular transceiver module, connection transceiver module, cellular front-end modules, first filter, second filter,
Third filter, the first combiner, the second combiner, first antenna and the second antenna, the processor include digital interface, bee
Nest modem and connection modem；
The cellular modem of the processor connects the first end of the cellular transceiver module, the honeycomb transmitting-receiving
The second end of device module connects the first end of the cellular front-end modules, the second end connection of the cellular front-end modules described the
The first end of one combiner；
The digital interface of the processor connects the first end of the LPWAN communication module, the LPWAN communication module
Second end connects the first end of the first filter, and the second end of the first filter connects the of first combiner
The third end at two ends, first combiner connects the first antenna；
The connection modem of the processor connects the first end of the connection transceiver module, and mould is received and dispatched in the connection
The first end of the second end connection second filter of block, the second end of the second filter connect the of second combiner
One end, the first end of the third end connection third filter of the connection transceiver module, the second end of the third filter connect
The second end of second combiner is connect, the third end of second combiner connects second antenna；
The LPWAN communication module receives the signal of LPWAN frequency range by the first antenna.
9. RF front-end circuit according to claim 8, which is characterized in that the working frequency range of the first antenna includes bee
The frequency range of nest communication standard and the LPWAN frequency range, the working frequency range of second antenna include 2.4G frequency range and 5G frequency range.
10. a kind of electronic equipment, which is characterized in that including memory, external equipment and such as any one of claim 1~9 institute
The RF front-end circuit stated.
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| CN201910472655.1A CN110120825A (en) | 2019-05-31 | 2019-05-31 | RF front-end circuit and electronic equipment |
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| CN114826317A (en) * | 2022-04-12 | 2022-07-29 | Oppo广东移动通信有限公司 | Antenna device and electronic equipment |
| WO2024119981A1 (en) * | 2022-12-07 | 2024-06-13 | Oppo广东移动通信有限公司 | Radio frequency assembly and electronic device |
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Application publication date: 20190813 |