CN109274381A - A kind of multi-frequency band mobile communication radio frequency transceiver - Google Patents
A kind of multi-frequency band mobile communication radio frequency transceiver Download PDFInfo
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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
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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
A kind of multi-frequency band mobile communication radio frequency transceiver, including baseband processing module, baseband radio conversion module, RF front-end module, multiplexer and dual-mode antenna.In receives link, dual-mode antenna, which receives signal and send to multiplexer, carries out frequency-selecting and branch, it is then fed into RF front-end module and carries out low noise amplification, filtering and gain control, and it is sent to baseband radio conversion module and is converted to baseband signal, frequency selectivity filtering is finally carried out by baseband processing module, the business datum of a plurality of successive bands is generated, the reception of successive bands mobile communication signal is completed；In transmitting link, the business datum of a plurality of successive bands is carried out digital baseband combining by baseband processing module, business datum after generating a combining, send to baseband radio conversion module be converted to send after radiofrequency signal to RF front-end module be filtered, gain control and power amplification, it send to multiplexer combining, emitted by dual-mode antenna, completes the transmitting of successive bands mobile communication signal.
Description
Technical field
The present invention relates to a kind of multi-frequency band mobile communication radio frequency transceivers, belong to mobile communication technology field.
Background technique
With the development of mobile communication, information capacity and traffic rate are continuously improved, and the frequency bandwidth for transmitting occupancy also exists
It is skyrocketed through.However radio-frequency spectrum is non-renewable scarce resource, to reach frequency spectrum resource using maximization, while again can
Meet 3GPP tissue (3rdGeneration Partnership Project) formulate international communication frequency range standard, country it is right
Frequency spectrum is divided and has been authorized, by taking Band3 emits frequency range as an example, China Mobile, China Unicom, big operator of China Telecom three
1805MHz~1830MHz, the right to use of 1830MHz~1860MHz, 1860MHz~1880MHz are obtained respectively.It is not difficult to send out
Existing, the authorized spectrum band that each operator obtains is closely adjacent, frequency interval zero.In actual use, although each operator is pre-
It has stayed a small amount of frequency range (such as 5MHz) as protection interval, but transceiver has been proposed in terms of the AF panel of side frequency
High requirement, there are biggish designs for the mobile communication transceiver that multiband especially supports multichannel successive bands to receive and dispatch simultaneously
Difficulty.
Existing multi-frequency transmit-receive technology [ZTE Corporation, number of patent application 201510708837], as shown in Figure 1, using
Combiner and filter are simulated to realize the combiner of multi-frequency receiving-transmitting chain.It is biggish more that this method can be used for frequency range interval
Frequency transceiver, but for adjacent frequency transceiver, increase the design difficulty of filtering device.
For the inhibition requirement for meeting successive bands harmonic wave and spuious equal interference, combiner and filter are needed in band edge
It realizes steep drop, and must take into account with the indexs such as interior Insertion Loss peace is smooth, technology realizes that difficulty is very high, and bulky, it is at high cost,
It is unable to satisfy the requirement of multi-frequency band radio-frequency transceiver.
In existing scheme, that is, analog filtering scheme, in order to realize precipitous passband edges, flat band internal characteristic, thus
Inhibit successive bands m-Acetyl chlorophosphonazo and clutter interference, frequency-selecting device such as combiner and filter can not be by chip-scale devices or small
Type module is realized；Current chip-scale device and miniaturization module using micro-strip filtering, the filtering of sound surface filtering, sound body etc. at
Cooking technique and process program realize, theoretical basis determine passband edges be it is relatively gentle, can not accomplish precipitous, passband
- 30dBc the degree of suppression at edge can meet receiver harmonic wave and clutter interference inhibits the phase of index usually in 20MHz or more
The frequency interval of adjacent frequency segment signal should reach at least 20MHz；It, can be using performance more in order to realize the passband edges of comparable steepness
Excellent cavity filters solutions such as use cavity combiner and cavity body filter in a transceiver, and this scheme can be on passband side
Reach the degree of suppression of -30dBc at the 5MHz on edge, this is also that aforementioned current each telecom operators of the country reserve 5MHz bandwidth as phase
The reason of adjacent frequency segment signal protection interval, but the volume and weight of cavity body filter part is huge, is commonly used in mobile communication base station
Or high-power, large volume communication equipment, terminal device especially handheld device can not be suitable for；Moreover, cavity body filter
Designing technique difficulty, size and the cost of part are in geometric growth as frequency interval reduces, therefore more low frequency interval
Product not yet forms the application of scale market at present, and the frequency selectivity filter of zero successive bands signal is divided between aforementioned frequencies
Wave theoretically cannot achieve.
Summary of the invention
Present invention solves the technical problem that are as follows:
To solve multiband especially multichannel successive bands mobile communication transceiver technical difficulty height, volume in the prior art
Greatly, the problems such as at high cost, reduces the analog filterings devices such as multi-frequency band mobile communication transceiver especially combiner and filter
Design complexities, the present invention proposes a kind of mobile communication radio frequency transceiver of multiband especially multichannel successive bands, in base band
Processing is partially completed the branch and combining of multichannel successive bands signal, to overcome or solve the above problems.
The technical solution of the invention is as follows:
Before a kind of multi-frequency band mobile communication radio frequency transceiver, including baseband processing module, baseband radio conversion module, radio frequency
End module, multiplexer and dual-mode antenna；
In receives link, dual-mode antenna receives mobile communication signal and send to multiplexer, and multiplexer filters out out-of-band interference
Signal and spurious signal are sent into the RF front-end module of corresponding frequency band, RF front-end module will be penetrated after carrying out frequency-selecting and branch
After frequency signal carries out low noise amplification, filtering, gain control, it is sent to baseband radio conversion module, baseband radio conversion module
The radiofrequency signal that RF front-end module transmission comes is converted into baseband signal, and sends baseband processing module to, Base-Band Processing mould
Block carries out frequency selectivity filtering to the baseband signal, and the business datum for belonging to different frequency range is distinguished and base band point
The reception of successive bands mobile communication signal is completed to generate the business datum of a plurality of successive bands in road；
In transmitting link, the business datum of a plurality of successive bands is carried out digital baseband combining by baseband processing module, raw
At the business datum after a combining, and sends the business datum after the combining to baseband radio conversion module and be converted to radio frequency
Signal, and it is supplied to RF front-end module, successively radiofrequency signal is filtered, after gain control and power amplification, is sent at most
After work device carries out signal filtering and combining, launched by dual-mode antenna, completes the transmitting of successive bands mobile communication signal.
The RF front-end module includes: radiofrequency emitting module, Receiver Module and rf control unit；
Downlink radio-frequency signal from baseband radio conversion module is filtered by radiofrequency emitting module, gain control and function
After rate amplification, it is sent to multiplexer；
After upstream radio-frequency signal from multiplexer is carried out low noise amplification, filtering, gain control by Receiver Module,
It is sent to baseband radio conversion module；
Rf control unit provides the first tuning for radiofrequency emitting module and controls signal and power amplifier offset signal；Rf control unit
The second tuning, which is provided, for Receiver Module controls signal.
Radiofrequency emitting module includes: the first radio-frequency filter, the first radio frequency amplifier, the first adjustable attenuator and power
Amplifier；
Radio-frequency filter filters out higher hamonic wave, band stray and image frequency in radiofrequency signal, inhibits interference, Zhi Houtong
It crosses the first radio frequency amplifier and carries out pre-amplification, then decayed by the first adjustable attenuator to radiofrequency signal, to adjust hair
The gain for penetrating link carries out power amplification to radiofrequency signal eventually by power amplifier, output signal is made to reach system needs
Power and be supplied to multiplexer；First adjustable attenuator carries out Attenuation adjustable by the first tuning control signal；Power
Amplifier carries out parameter configuration by the power amplifier offset signal.
Emit link according to the frequency range and standard of mobile communication signal, uses the first rf filtering of corresponding frequencies and bandwidth
Device.
Receiver Module includes: the second radio-frequency filter, the second radio frequency amplifier, the second adjustable attenuator and low noise
Acoustic amplifier；
Small-signal from multiplexer is carried out low noise amplification by low-noise amplifier, is sent to the second adjustable attenuator
Decay, to adjust the gain of receives link, signal amplification is carried out by the second radio frequency amplifier later, eventually by the
Two radio-frequency filters filter out higher hamonic wave and band stray in radiofrequency signal, are sent to baseband radio modulus of conversion after inhibiting interference
Block；Second adjustable attenuator carries out Attenuation adjustable by the second tuning control signal.
Receives link uses the second rf filtering of corresponding frequencies and bandwidth according to the frequency range and standard of mobile communication signal
Device.
Baseband radio conversion module includes: transmitting conversion module, receives conversion module and baseband controller；
Transmitting conversion module believes the radio frequency that the combining business datum that baseband processing module transmission comes is converted into corresponding band
Number, and send RF front-end module to；It receives conversion module and the radiofrequency signal that RF front-end module transmission comes is converted into base band
Signal, and send baseband processing module to；Baseband controller provides the first reference clock, the first tuning control for transmitting conversion module
Signal processed and the first local oscillation signal；Baseband controller provides the second reference clock, the second tuning control to receive conversion module
Signal and the second local oscillation signal.
Transmitting conversion module includes: digital-analog convertor, the first tunable low-pass filter and simulation up-conversion
Device；
Digital baseband business datum is carried out sampling recovery according to first reference clock by digital-analog convertor, is turned
It is changed to simulation zero frequency signal, the first tunable low-pass filter simulates zero-frequency according to the first tuning control target signal filter
Band stray, higher hamonic wave and image frequency in signal inhibit interference, then will simulate zero frequency signal by simulating upconverter
It is mixed with the first local oscillation signal, so that the radiofrequency signal of corresponding frequencies is generated, to meet different frequency range mobile communication signal
Frequency standard requirement.
Receiving conversion module includes: analog down converter, the second tunable low-pass filter and analog-digital conversion
Device；
Radiofrequency signal is mixed by analog down converter with the second local oscillation signal, is simulation zero-frequency by radiofrequency signal frequency reducing
Signal, the second tunable low-pass filter according to second tuning control target signal filter described in simulation zero frequency signal in outer miscellaneous
Scattered, higher hamonic wave and image frequency inhibit interference, eventually by analogue-to-digital converters according to second reference clock pair
Simulation zero frequency signal is sampled and is quantified, and is converted to digital baseband business datum, and be sent to baseband processing module.
Baseband processing module includes base band combining module and base band shunt module；
In transmitting link, base band is combined module and the business datum of a plurality of successive bands is carried out number according to framing strategy
Base band combining, the business datum after generating a combining, and send the business datum after the combining to baseband radio modulus of conversion
Block；
In receives link, the base band data that the transmission of baseband radio conversion module comes is carried out frequency choosing by base band shunt module
Selecting property filtering, by the business datum for belonging to different frequency range distinguish with base band branch, to generate the industry of a plurality of successive bands
Business data.
The framing strategy is, according to the sequence of adjacent frequency business datum and the sequence of data frame, carry out sequence polling type group
Frame, framing as a result, each data frame according to 11,21,31 ... ... n1,12,22,32 ... n2 ... ... 1n, 2n, 3n ... nn
Mode arranges, the combining of finishing service data；Wherein, adjacent frequency business datum 1 is by data frame 11,12,13 ... ..., and 1n is formed, adjacent
Frequency business datum 2 is by data frame 21,22,23 ... ... 2n composition, it is similar therewith, adjacent frequency business datum n by data frame n1, n2,
N3 ... ... nn composition.
The base band data that the transmission of baseband radio conversion module comes is carried out frequency selectivity filtering by base band shunt module, will be belonged to
In the business datum of different frequency range distinguish with base band branch, specifically:
The base band data that the n1 with 11,21,31 ... ..., 12,22,32 ... n2 ... ... 1n, 2n, 3n ... nn mode arrange
After the digital filter of base band shunt module, data frame by frequency-selecting and branch, belong to the data frame of same frequency range again by
Sequence forms new business datum, and the data frame of successive bands is then filtered.
The beneficial effects of the present invention are:
Compared with prior art, the present invention by the mobile communication signal of successive bands digital baseband part be combined with
Branch process avoids radio frequency combining and branch, to significantly reduce the filtering devices such as radio frequency combiner and radio-frequency filter
Design complexities, solve multiband especially multichannel successive bands mobile communication transceiver technical difficulty is high, volume is big, at
The problems such as this is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of multi-frequency band mobile communication radio frequency transceiver in the prior art.
Fig. 2 is the structure composition block diagram of multi-frequency band mobile communication radio frequency transceiver of the invention.
Fig. 3 is the structural schematic diagram of baseband processing module of the invention.
Fig. 4 is the structural schematic diagram of baseband radio conversion module of the invention.
Fig. 5 is the structural schematic diagram of RF front-end module of the invention.
Fig. 6 is the embodiment of the present invention test macro connection schematic diagram.
Fig. 7 is the embodiment of the present invention test macro signal flow schematic diagram.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
As shown in Fig. 2, the invention proposes a kind of multi-frequency band mobile communication radio frequency transceiver, including baseband processing module 1
(n) (wherein, n=1,2,3 ...), baseband radio conversion module 2 (n) (wherein, n=1,2,3 ...), RF front-end module 3
(n) (wherein, n=1,2,3 ...), multiplexer 4 and dual-mode antenna 5；
In receives link, dual-mode antenna receives mobile communication signal and send to multiplexer, and multiplexer filters out out-of-band interference
Signal and spurious signal are sent into the RF front-end module of corresponding frequency band, RF front-end module will be penetrated after carrying out frequency-selecting and branch
After frequency signal carries out low noise amplification, filtering, gain control, it is sent to baseband radio conversion module, baseband radio conversion module
The radiofrequency signal that RF front-end module transmission comes is converted into baseband signal, and sends baseband processing module to, Base-Band Processing mould
Block carries out frequency selectivity filtering to the baseband signal, and the business datum for belonging to different frequency range is distinguished and base band point
The reception of successive bands mobile communication signal is completed to generate the business datum of a plurality of successive bands in road；
In transmitting link, the business datum of a plurality of successive bands is carried out digital baseband combining by baseband processing module, raw
At the business datum after a combining, and sends the business datum after the combining to baseband radio conversion module and be converted to radio frequency
Signal, and it is supplied to RF front-end module, successively radiofrequency signal is filtered, after gain control and power amplification, is sent at most
After work device carries out signal filtering and combining, launched by dual-mode antenna, completes the transmitting of successive bands mobile communication signal.
The identical module of n belongs to same receiving-transmitting chain, the transmitting-receiving chain after corresponding single frequency band or the combining of several successive bands
Road for example, 880MHz~915MHz frequency range can be corresponded to, or corresponds to 1805MHz~1830MHz, 1830MHz~1860MHz,
1805MHz~1880MHz the frequency range formed after tri- successive bands combinings of 1860MHz~1880MHz.N different modules belong to
Different receiving-transmitting chains, the receiving-transmitting chain of corresponding different frequency range.
In transmitting link, since n successive bands signal is after baseband portion is combined, sent out using same hardware
Penetrate link, therefore the output power that can reach of RF front-end module should be n times of single frequency band output power.
As shown in figure 5, RF front-end module includes: radiofrequency emitting module 31 (n) (wherein, n=1,2,3 ...), radio frequency
Receiving module 32 (n) (wherein, n=1,2,3 ...) and rf control unit 33 (n) (wherein, n=1,2,3 ...)；
Downlink radio-frequency signal from baseband radio conversion module is filtered by radiofrequency emitting module, gain control and function
After rate amplification, it is sent to multiplexer；
After upstream radio-frequency signal from multiplexer is carried out low noise amplification, filtering, gain control by Receiver Module,
It is sent to baseband radio conversion module；
Rf control unit provides the first tuning for radiofrequency emitting module and controls signal and power amplifier offset signal；Rf control unit
The second tuning, which is provided, for Receiver Module controls signal；Rf control unit can be by micro-control unit chip (MCU, Micro-
Controller Unit) and peripheral circuit realization.
Radiofrequency emitting module includes: the first radio-frequency filter 311 (n) (wherein, n=1,2,3 ...), the amplification of the first radio frequency
Device 312 (n) (wherein, n=1,2,3 ...), the first adjustable attenuator 313 (n) (wherein, n=1,2,3 ...) and power are put
Big device 314 (n) (wherein, n=1,2,3 ...)；
Radio-frequency filter filters out higher hamonic wave, band stray and image frequency in radiofrequency signal, inhibits interference, Zhi Houtong
It crosses the first radio frequency amplifier and carries out pre-amplification, then decayed by the first adjustable attenuator to radiofrequency signal, to adjust hair
The gain for penetrating link carries out power amplification to radiofrequency signal eventually by power amplifier, output signal is made to reach system needs
Power and be supplied to multiplexer；First adjustable attenuator carries out Attenuation adjustable by the first tuning control signal；Power
Amplifier carries out parameter configuration by the power amplifier offset signal.Emit link according to the frequency range and standard of mobile communication signal,
Using the first radio-frequency filter of corresponding frequencies and bandwidth, aforementioned band3 band downlink is for example, adapted to, radio-frequency filter leads to
Band frequency should be 1805MHz~1880MHz.
Receiver Module includes: the second radio-frequency filter 324 (n) (wherein, n=1,2,3 ...), the amplification of the second radio frequency
Device 323 (n) (wherein, n=1,2,3 ...), the second adjustable attenuator 322 (n) (wherein, n=1,2,3 ...) and low noise
Amplifier 321 (n) (wherein, n=1,2,3 ...)；
Small-signal from multiplexer is carried out low noise amplification by low-noise amplifier, is sent to the second adjustable attenuator
Decay, to adjust the gain of receives link, signal amplification is carried out by the second radio frequency amplifier later, eventually by the
Two radio-frequency filters filter out higher hamonic wave and band stray in radiofrequency signal, are sent to baseband radio modulus of conversion after inhibiting interference
Block；Second adjustable attenuator carries out Attenuation adjustable by the second tuning control signal.Receives link is believed according to mobile communication
Number frequency range and standard for example, adapt to line frequency on aforementioned band3 using the second radio-frequency filter of corresponding frequencies and bandwidth
Section, the band connection frequency of radio-frequency filter should be 1710MHz~1785MHz.
As shown in figure 4, baseband radio conversion module include: transmitting conversion module 21 (n) (wherein, n=1,2,3 ...),
Receive conversion module 22 (n) (wherein, n=1,2,3 ...) and baseband controller 23 (n) (wherein, n=1,2,3 ...)；
Transmitting conversion module believes the radio frequency that the combining business datum that baseband processing module transmission comes is converted into corresponding band
Number, and send RF front-end module to；It receives conversion module and the radiofrequency signal that RF front-end module transmission comes is converted into base band
Signal, and send baseband processing module to；Baseband controller provides the first reference clock, the first tuning control for transmitting conversion module
Signal processed and the first local oscillation signal；Baseband controller provides the second reference clock, the second tuning control to receive conversion module
Signal and the second local oscillation signal；Baseband controller can be realized by micro-control unit chip and peripheral circuit.
Transmitting conversion module includes: digital-analog convertor 211 (n) (wherein, n=1,2,3 ...), first tunable
Low-pass filter 212 (n) (wherein, n=1,2,3 ...) and simulation upconverter 213 (n) (wherein, n=1,2,3 ...)；
Digital baseband business datum is carried out sampling recovery according to first reference clock by digital-analog convertor, is turned
It is changed to simulation zero frequency signal, the first tunable low-pass filter can change work frequency according to the first tuning control signal
Section, to be adapted to the demand of the mobile communication signal of different communication standard, frequency range, bandwidth, to filter out the simulation zero frequency signal
In band stray, higher hamonic wave and image frequency, inhibit interference, then zero frequency signal and the will be simulated by simulation upconverter
One local oscillation signal is mixed, so that the radiofrequency signal of corresponding frequencies is generated, to meet the frequency of different frequency range mobile communication signal
Rate standard requirements.For example, to adapt to the standard requirements of aforementioned band3 frequency range, should will simulation zero-frequency signal frequency-raising to 1805MHz~
The radio frequency band of 1880MHz.
Receiving conversion module includes: analog down converter 221 (n) (wherein, n=1,2,3 ...), the second tunable low pass
Filter 222 (n) (wherein, n=1,2,3 ...) and analogue-to-digital converters 223 (n) (wherein, n=1,2,3 ...)；
Radiofrequency signal is mixed by analog down converter with the second local oscillation signal, is simulation zero-frequency by radiofrequency signal frequency reducing
Signal, the second tunable low-pass filter can change working frequency range according to the second tuning control signal, to be adapted to difference
Communication standard, frequency range, bandwidth mobile communication signal demand, thus filter out it is described simulation zero frequency signal in band stray,
Higher hamonic wave and image frequency inhibit interference, eventually by analogue-to-digital converters according to second reference clock to simulation
Zero frequency signal is sampled and is quantified, and is converted to digital baseband business datum, and be sent to baseband processing module.
As shown in figure 3, baseband processing module includes base band combining module 11 (n) (wherein, n=1,2,3 ...) and base band
Shunt module 12 (n) (wherein, n=1,2,3 ...)；
In transmitting link, base band is combined module and the business datum of a plurality of successive bands is carried out number according to framing strategy
Base band combining, the business datum after generating a combining, and send the business datum after the combining to baseband radio modulus of conversion
Block；The framing strategy is, according to the sequence of adjacent frequency business datum and the sequence of data frame, carry out sequence polling type framing, group
Frame as a result, each data frame according to 11,21,31 ... ... n1,12,22,32 ... n2 ... ... 1n, 2n, 3n ... nn mode
Arrangement, the combining of finishing service data；Wherein, adjacent frequency business datum 1 is by data frame 11,12,13 ... ... 1n composition, adjacent frequency industry
Data 2 of being engaged in are by data frame 21,22,23 ... ... 2n composition, it is similar therewith, adjacent frequency business datum n by data frame n1, n2,
N3 ... ... nn composition.
In receives link, the base band data that the transmission of baseband radio conversion module comes is carried out frequency choosing by base band shunt module
Selecting property filtering, by the business datum for belonging to different frequency range distinguish with base band branch, to generate the industry of a plurality of successive bands
Business data.Specifically:
The base band data that the n1 with 11,21,31 ... ..., 12,22,32 ... n2 ... ... 1n, 2n, 3n ... nn mode arrange
After the digital filter of base band shunt module, data frame by frequency-selecting and branch, belong to the data frame of same frequency range again by
Sequence forms new business datum, and the data frame of successive bands is then filtered；For example, passing through the data frame of digital filter 1
Business datum 1 is belonged to, the data frame of the business datum 1 after branch is according to 11,12,13 ... ..., and 1n mode arranges, other roads
Business datum is similar therewith, the branch of finishing service data.
Baseband processing module can be in FPGA (field-programmable logic gate array chip) or DSP (digital signal processing chip)
It is realized in equal high speed numerical processors.
Digital filter in base band shunt module can be realized that filtering performance can infinitely connect by high-order digit filtering algorithm
Nearly theoretical limit realizes precipitous passband edges, flat band internal characteristic etc., can sufficiently filter the signal of successive bands,
Inhibit its interference caused by receiver, and reduce and make an uproar with interior bottom, thus be easy to reach receiver successive bands m-Acetyl chlorophosphonazo and
The index that clutter interference inhibits meets the requirement of successive bands signal frequency-selecting branch.
As shown in fig. 6, being the test macro connection schematic diagram of the embodiment of the present invention；
Test macro is mobile by vector signal generator, the first multi-frequency band mobile communication radio frequency transceiver, the second multiband
Communication radio frequency transceiver, signal and spectrum analyzer, the first radio-frequency cable, the second radio-frequency cable and optical fiber composition；
Pass through the first radio-frequency cable between vector signal signal generator and the first multi-frequency band mobile communication radio frequency transceiver
Connection；Connected between first multi-frequency band mobile communication radio frequency transceiver and the second multi-frequency band mobile communication radio frequency transceiver by optical fiber
It connects；It is connected between second multi-frequency band mobile communication radio frequency transceiver and signal and spectrum analyzer by the second radio-frequency cable；
The vector signal generator can generate the broadband the 3G/4G shifting for meeting 3GPP communication standard as radio-frequency signal source
Dynamic signal of communication, mter model are Luo De and Schwarz SMW200A；The signal and spectrum analyzer as signal analyzer,
The performance indexes of the signal after the embodiment of the present invention is received and dispatched can be examined, mter model is Luo De Schwarz FSW13；
As shown in fig. 7, being the test macro signal flow schematic diagram of the embodiment of the present invention；
Vector signal generator, which generates, meets the required multichannel successive bands signal of test, and it is mobile to be sent to the first multiband
First receives link of communication radio frequency transceiver successively carries out radio frequency processing, the baseband radio conversion of multichannel successive bands signal
After Base-Band Processing, it is sent to the second transmitting link of the second multi-frequency band mobile communication radio frequency transceiver, successively carries out multichannel phase
After the Base-Band Processing of adjacent frequency segment signal, baseband radio conversion and radio frequency processing, it is sent to signal and spectrum analyzer carries out signal
Analysis, and obtain measuring technology index.
Following table is the test result of technical indicator of the embodiment of the present invention and the comparison with telecommunications industry standard:
| Serial number | Performance indicator (unit) | Test result | Telecommunications industry standard | Whether meet the requirements |
| 1 | Output power (dBm) | 24.74 | ≥20 | It is |
| 2 | System gain (dB) | 51 | ≤55 | It is |
| 3 | Inband flatness (dB) | 4.3 | ≤6 | It is |
| 4 | ACLR(dBc) | 49.54 | ≥45 | It is |
| 5 | EVM (%) | ≤5.89 | ≤6 | It is |
| 6 | Input dynamic range (dB) | 89 | ≥70 | It is |
By aforementioned test macro, the transceiver Key Performance Indicator of the embodiment of the present invention, including output work can be examined
Rate, system gain, inband flatness, adjacent channel are leaked than (ACLR, Adjacent Channel Leakage Ratio), accidentally
Vector magnitude (EVM, Error Vector Magnitude) and input dynamic range etc.；Test result shows, multichannel phase
After the transmitting-receiving of the embodiment of the present invention, indices reach or better than telecommunications industry standard, show this hair adjacent frequency segment signal
Bright embodiment has good radio-frequency performance, meets telecommunications industry product requirements for sale；And existing analog filtering scheme can not be real
Existing multichannel successive bands signal transmitting and receiving.
Claims (12)
1. a kind of multi-frequency band mobile communication radio frequency transceiver, it is characterised in that: including baseband processing module, baseband radio modulus of conversion
Block, RF front-end module, multiplexer and dual-mode antenna；
In receives link, dual-mode antenna receives mobile communication signal and send to multiplexer, and multiplexer filters out out-of-band interference signal
And spurious signal is sent into the RF front-end module of corresponding frequency band, RF front-end module believes radio frequency after carrying out frequency-selecting and branch
Number carry out low noise amplification, filtering, gain control after, be sent to baseband radio conversion module, baseband radio conversion module will be penetrated
The radiofrequency signal that the transmission of frequency front-end module comes is converted to baseband signal, and sends baseband processing module to, baseband processing module pair
The baseband signal carries out frequency selectivity filtering, by the business datum for belonging to different frequency range distinguish with base band branch, from
And the business datum of a plurality of successive bands is generated, complete the reception of successive bands mobile communication signal；
In transmitting link, the business datum of a plurality of successive bands is carried out digital baseband combining by baseband processing module, generates one
Business datum after item combining, and send the business datum after the combining to baseband radio conversion module and be converted to radio frequency letter
Number, and it is supplied to RF front-end module, successively radiofrequency signal is filtered, after gain control and power amplification, is sent to multiplexing
After device carries out signal filtering and combining, launched by dual-mode antenna, completes the transmitting of successive bands mobile communication signal.
2. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 1, it is characterised in that: the radio-frequency front-end
Module includes: radiofrequency emitting module, Receiver Module and rf control unit；
Downlink radio-frequency signal from baseband radio conversion module is filtered by radiofrequency emitting module, gain control and power are put
After big, it is sent to multiplexer；
After upstream radio-frequency signal from multiplexer is carried out low noise amplification, filtering, gain control by Receiver Module, transmission
To baseband radio conversion module；
Rf control unit provides the first tuning for radiofrequency emitting module and controls signal and power amplifier offset signal；Rf control unit is to penetrate
Frequency receiving module provides the second tuning control signal.
3. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 2, it is characterised in that: radiofrequency emitting module
It include: the first radio-frequency filter, the first radio frequency amplifier, the first adjustable attenuator and power amplifier；
Radio-frequency filter filters out higher hamonic wave, band stray and image frequency in radiofrequency signal, inhibits interference, later by the
One radio frequency amplifier carries out pre-amplification, then is decayed by the first adjustable attenuator to radiofrequency signal, to adjust transmitting chain
The gain on road carries out power amplification to radiofrequency signal eventually by power amplifier, output signal is made to reach the function of system needs
Rate is simultaneously supplied to multiplexer；First adjustable attenuator carries out Attenuation adjustable by the first tuning control signal；Power amplification
Device carries out parameter configuration by the power amplifier offset signal.
4. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 3, it is characterised in that: transmitting link according to
The frequency range and standard of mobile communication signal use the first radio-frequency filter of corresponding frequencies and bandwidth.
5. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 2, it is characterised in that: Receiver Module
It include: the second radio-frequency filter, the second radio frequency amplifier, the second adjustable attenuator and low-noise amplifier；
Small-signal from multiplexer is carried out low noise amplification by low-noise amplifier, is sent to the progress of the second adjustable attenuator
Decaying carries out signal amplification by the second radio frequency amplifier later, penetrates eventually by second to adjust the gain of receives link
Frequency filter filters out higher hamonic wave and band stray in radiofrequency signal, is sent to baseband radio conversion module after inhibiting interference；
Second adjustable attenuator carries out Attenuation adjustable by the second tuning control signal.
6. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 5, it is characterised in that: receives link according to
The frequency range and standard of mobile communication signal use the second radio-frequency filter of corresponding frequencies and bandwidth.
7. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 1, it is characterised in that: baseband radio conversion
Module includes: transmitting conversion module, receives conversion module and baseband controller；
The combining business datum that baseband processing module transmission comes is converted into the radiofrequency signal of corresponding band by transmitting conversion module, and
Send RF front-end module to；It receives conversion module and the radiofrequency signal that RF front-end module transmission comes is converted into baseband signal,
And send baseband processing module to；Baseband controller provides the first reference clock, the first tuning control letter for transmitting conversion module
Number and the first local oscillation signal；Baseband controller provides the second reference clock, the second tuning control signal to receive conversion module
And second local oscillation signal.
8. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 7, it is characterised in that: transmitting conversion module
It include: digital-analog convertor, the first tunable low-pass filter and simulation upconverter；
Digital baseband business datum is carried out sampling recovery according to first reference clock by digital-analog convertor, is converted to
Zero frequency signal is simulated, the first tunable low-pass filter simulates zero frequency signal according to the first tuning control target signal filter
In band stray, higher hamonic wave and image frequency, inhibit interference, then zero frequency signal and the will be simulated by simulation upconverter
One local oscillation signal is mixed, so that the radiofrequency signal of corresponding frequencies is generated, to meet the frequency of different frequency range mobile communication signal
Rate standard requirements.
9. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 7, it is characterised in that: receive conversion module
It include: analog down converter, the second tunable low-pass filter and analogue-to-digital converters；
Radiofrequency signal is mixed by analog down converter with the second local oscillation signal, is simulation zero-frequency letter by radiofrequency signal frequency reducing
Number, the second tunable low-pass filter according to second tuning control target signal filter described in simulation zero frequency signal in band stray,
Higher hamonic wave and image frequency inhibit interference, eventually by analogue-to-digital converters according to second reference clock to simulation
Zero frequency signal is sampled and is quantified, and is converted to digital baseband business datum, and be sent to baseband processing module.
10. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 1, it is characterised in that: Base-Band Processing mould
Block includes base band combining module and base band shunt module；
In transmitting link, base band is combined module and the business datum of a plurality of successive bands is carried out digital baseband according to framing strategy
Combining, the business datum after generating a combining, and send the business datum after the combining to baseband radio conversion module；
In receives link, the base band data that the transmission of baseband radio conversion module comes is carried out frequency selectivity by base band shunt module
Filtering, by the business datum for belonging to different frequency range distinguish with base band branch, to generate the business number of a plurality of successive bands
According to.
11. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 10, it is characterised in that: the framing plan
Slightly, according to the sequence of adjacent frequency business datum and the sequence of data frame, carry out sequence polling type framing, framing as a result, each
Data frame is according to 11,21,31 ... ... n1,12,22,32 ... n2 ... ... 1n, 2n, 3n ... nn mode arrange, finishing service
The combining of data；Wherein, adjacent frequency business datum 1 is by data frame 11,12,13 ... ..., and 1n is formed, and adjacent frequency business datum 2 is by data
Frame 21,22,23 ... ... 2n composition, similar therewith, adjacent frequency business datum n is made of data frame n1, n2, n3 ... ... nn.
12. a kind of multi-frequency band mobile communication radio frequency transceiver according to claim 10, it is characterised in that: base band branch mould
The base band data that the transmission of baseband radio conversion module comes is carried out frequency selectivity filtering by block, will belong to the business number of different frequency range
According to distinguish with base band branch, specifically:
The base band data that the n1 with 11,21,31 ... ..., 12,22,32 ... n2 ... ... 1n, 2n, 3n ... nn mode arrange passes through
After the digital filter of base band shunt module, data frame belongs to the data frame of same frequency range again in order by frequency-selecting and branch
New business datum is formed, and the data frame of successive bands is then filtered.
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