CN206620209U - A kind of high-power amplifying device - Google Patents
A kind of high-power amplifying device Download PDFInfo
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- CN206620209U CN206620209U CN201720405896.0U CN201720405896U CN206620209U CN 206620209 U CN206620209 U CN 206620209U CN 201720405896 U CN201720405896 U CN 201720405896U CN 206620209 U CN206620209 U CN 206620209U
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Abstract
The utility model is related to a kind of high-power amplifying device, including：For receiving the terrestrial television radiofrequency signal of DTMB drivers output and being amplified to the excitation amplifying unit of middle power rating；The radiofrequency signal of the middle power rating be connected with the excitation amplifying unit, exported for reception excitation amplifying unit and the power amplification unit that power amplification is carried out by power requirement；The radiofrequency signal of the power amplification be connected with the power amplification unit, exported for receiving power amplifying unit and the output sampling unit for being sampled, exporting；Respectively with it is described excitation amplifying unit and export sampling unit be connected, the detection control unit for being detected, being controlled to the power of whole device, temperature and electric current.The utility model amplification efficiency is high, small power consumption, and with excellent amplitude-frequency and phase-frequency characteristic.
Description
【Technical field】
The utility model is related to power amplifier technology field, relates particularly to DTMB (Digital Television
Terrestrial Multimedia Broadcasting, DTTB) a kind of high-power amplification dress in system
Put.
【Background technology】
With developing rapidly for radio and television and mobile communication, the realization of new technology has promoted the release of various applications, right
Service provider requires more and more higher, and in order to better meet user's request, various regions broadcasting and TV company increases the network of radio and television
Construction.Under high energy consumption enterprise and cost pressure so that subject of operation focuses more on operation cost and efficiency, and the network equipment is carried
More requirements, such as device efficiency, remote monitoring, self-healing function etc. are gone out.
Power amplifier is power consumption maximum in broadcast transmitter, and strict part is required to environment and use condition.Power amplifier module
Technical indicator and function directly determine the systematic function of emitter.The rollback power amplifier in general emitter is with larger at present
Power consumption is paid to meet linear requirements, and DC (direct current) is limited to RF (radio frequency) conversion efficiency, it is clear that can not meet current broadcast
The requirement of power amplifier in transmitter, exploitation high-efficiency amplifier seems especially important, and it not only improves equipment because of lower power consumption can
By property, equipment cooling demand is reduced, while also reducing the operating cost of equipment.
【Utility model content】
The purpose of this utility model is to overcome the shortcomings of above-mentioned technology there is provided a kind of suitable for the efficient of broadcast transmitter
The high-power amplifying device of rate, excellent amplitude-frequency and phase-frequency characteristic.
A kind of high-power amplifying device that the utility model is provided, including：
Excitation for receiving the terrestrial television radiofrequency signal of DTMB drivers output and be amplified to middle power rating is amplified
Unit；
The radiofrequency signal of the middle power rating be connected with the excitation amplifying unit, exported for reception excitation amplifying unit
And the power amplification unit of power amplification is carried out by power requirement；
The radiofrequency signal of the power amplification be connected with the power amplification unit, exported for receiving power amplifying unit is simultaneously
The output sampling unit be sampled, exported；
Respectively with it is described excitation amplifying unit and export sampling unit be connected, for the power of whole device, temperature and
The detection control unit that electric current is detected, controlled.
Further, the excitation amplifying unit includes：For the terrestrial television of the DTMB drivers output of reception to be penetrated
Frequency signal is amplified to middle power rating and the radio circuit exported；
For the detection control for being detected, being controlled to the input power of the radio circuit, power output, temperature and electric current
Circuit processed.
Further, the radio circuit includes the isolator being sequentially connected in series, the first amplifier, the second amplifier, the 3rd
Amplifier, coupler and circulator；The isolator is used for the terrestrial television radio frequency for exporting the DTMB drivers of reception
Signal carries out isolation and amplifier；The radiofrequency signal that first amplifier is used to export the isolator is amplified to first order power
Level；The radiofrequency signal that second amplifier is used for the first order power level for exporting first amplifier is amplified to completely
The second level power level of the input power of foot the 3rd amplifier；3rd amplifier is used for second amplifier
The radiofrequency signal of the second level power level of output is simultaneously amplified to middle power rating；The coupler is put for receiving the described 3rd
The radiofrequency signal of the middle power rating of big device output is simultaneously divided into two-way output, wherein being used to be output to the detection control electricity all the way
Road carries out positive power output detection, is used to be output to the circulator in addition all the way；The circulator is used to receive the coupling
The radiofrequency signal of clutch output is simultaneously divided into two-way output, wherein being used to be output to the power amplification unit all the way, in addition all the way
For being output to the detection control reverse power output detection of circuit progress and crossing power control system.
Further, the radio circuit also includes being sequentially connected in series between the isolator and first amplifier
First voltage-controlled attenuator, numerical-control attenuator, second be serially connected between first amplifier and second amplifier are voltage-controlled
Attenuator；First voltage-controlled attenuator is controlled circuit to be controlled by the detection, for adjusting what is exported from the isolator
The power level of radiofrequency signal with by it is described excitation amplifying unit peak power output control in rated output power level；Institute
State numerical-control attenuator is controlled circuit to be controlled by the detection, the gain for adjusting the radio circuit；Described second is voltage-controlled
Attenuator is controlled circuit to be controlled by the detection, for carrying out Temperature compensation for gain to the radio circuit.
Further, the power amplification unit include power splitter, multiple amplifiers for being connected with power splitter and with it is many
The synthesizer of individual amplifier connection；The power splitter is used for the radio frequency for receiving the middle power rating of the excitation amplifying unit output
Signal is simultaneously divided into multichannel and exported；What the correspondence that the multiple amplifier is respectively used to receive the power splitter was exported all the way penetrates
Frequency signal simultaneously carries out power amplification；The synthesizer is used for the radiofrequency signal for receiving the power amplification of the multiple amplifier output
And synthesis is output to the output sampling unit all the way.
Further, the amplifier is four；The power splitter is that banding couples four tunnel distribute modules, for receiving
State the radiofrequency signal of the middle power rating of excitation amplifying unit output and be divided into four tunnels and exported；The synthesizer is banding coupling
Four road synthesis modules are closed, are output to all the way for receiving the radiofrequency signal for the power amplification that four amplifiers are exported and synthesizing
The output sampling unit.
Further, the amplifier is four；The power splitter, synthesizer Dou Wei 0 degree of tetra- tunnel power distribution/synthesis
Device, be respectively used to receive the radiofrequency signal of the middle power rating of the excitation amplifying unit output and be divided into four tunnels exported with
And the output sampling is output to all the way for receiving the radiofrequency signal for the power amplification that four amplifiers are exported and synthesizing
Unit.
Further, the output sampling unit includes first via output end and the second tunnel output end, and the first via is defeated
The radiofrequency signal of power amplification that going out end is used to exporting the power amplification unit of reception is output to external equipment, and described the
Two tunnel output ends are used for the forward power signal for coupling the radiofrequency signal of the power amplification of the sampling power amplification unit output
With backward power signal.
Further, the forward power signal is divided into two-way output, wherein being used all the way as forward power sampled signal
Positive power output detection is carried out in being output to the detection control unit, is output to all the way as DPD feedback signal in addition
External equipment；The backward power signal is used to be output to the reverse power output detection of the detection control unit progress.
Further, in addition to housing, the excitation amplifying unit, power amplification unit, output sampling unit and detection
Control unit is all installed in the housing, and heat-pipe radiator and fan are provided with the housing.
The utility model amplification efficiency is high, small power consumption, and with excellent amplitude-frequency and phase-frequency characteristic, temperature rise control is uniform,
With DPD (digital pre-distortion) calibration function perfect adaptation of DTMB drivers.The utility model can realize various abnormal feelings simultaneously
The protection of condition, is well positioned to meet network application requirement.
【Brief description of the drawings】
Fig. 1 is a kind of structural representation of high-power amplifying device of the utility model；
Fig. 2 is the theory diagram of Fig. 1 shown devices；
Fig. 3 is the theory diagram of excitation amplifying unit shown in Fig. 2；
Fig. 4 is the theory diagram of power amplification unit shown in Fig. 2；
Fig. 5 is the flow chart of the amplification method of high-power amplifying device shown in Fig. 1；
Fig. 6 is the side that the terrestrial television radiofrequency signal of reception is amplified to middle power rating by excitation amplifying unit shown in Fig. 5
The flow chart of method；
Fig. 7 is during the terrestrial television radiofrequency signal that the DTMB drivers of reception are exported is amplified to by radio circuit shown in Fig. 6
The flow chart of power rating and the method exported.
【Embodiment】
The utility model will be further described with reference to the accompanying drawings and examples.
A kind of high-power amplifying device provided with reference to Fig. 1 and Fig. 2, the utility model, is all solid state amplifier, main to use
In DTMB (DTTB) system, for the amplification to ground digital television broadcast transmitter signal, work
Frequency range is 470~800MHz.The device includes housing 100, excitation amplifying unit 10, the power being installed in housing 100
Amplifying unit 40, output sampling unit 60 and detection control unit 80 and the heat-pipe radiator and wind being installed on housing 100
Fan 90.Excitation amplifying unit 10 is used to receive the terrestrial television radiofrequency signal of DTMB drivers output and is amplified to middle power shape
State.Power amplification unit 40 is connected with excitation amplifying unit 10, for receiving the middle power rating that excitation amplifying unit 10 is exported
Radiofrequency signal and by power requirement carry out power amplification.Output sampling unit 60 is connected with power amplification unit 40, for connecing
Receive the radiofrequency signal for the power amplification that power amplification unit 40 is exported and be sampled, export.Detection control unit 80 is whole
The management control center of device, passes through RS485 (differential signal) sides with excitation amplifying unit 10 and output sampling unit 60 respectively
Formula is communicated to connect, for being detected, being controlled to the power of whole device, temperature and electric current, and power, temperature and electric current are carried out
Control mainly has auto level control, forward direction to cross work(protection, overcurrent protection, vswr protection.Heat-pipe radiator (not shown on figure)
For heat conduction, mainly formed by aluminium section bar and heat pipe pressing, fan 90 is four, for forced air cooling.The present apparatus, which radiates, to be used for
Using heat-pipe radiator and fan 90, it may be such that each several part temperature difference is less than 5 degree, operating temperature rise is smaller, the temperature difference is uniform, can improve this
The working characteristics and reliability of device.
With reference to shown in Fig. 3, excitation amplifying unit 10 includes being used for penetrating the terrestrial television that the DTMB drivers of reception are exported
Radio circuit that frequency signal is amplified to middle power rating and exported, for the input power of radio circuit, power output,
The detection control circuit 20 that temperature and electric current are detected.Detection control circuit 20 is a microcontroller.
The isolator 11, the first voltage-controlled attenuator 12, numerical-control attenuator 13, first that radio circuit includes being sequentially connected in series amplify
Device 14, the second voltage-controlled attenuator 15, the second amplifier 16, the 3rd amplifier 17, coupler 18 and circulator 19.Isolator 11 is used
Isolation and amplifier is carried out in the terrestrial television radiofrequency signal for exporting the DTMB drivers of reception to meet excitation amplifying unit 10
Standing wave is inputted, the isolator of different model can be selected according to the difference of device channel frequency.First voltage-controlled attenuator 12 is by PIN bis-
Pole pipe is constituted, and is used as auto level control (ALC) part, the control of examined control circuit 20, for passing through regulation
The power level for the radiofrequency signal that attenuation regulation is exported from isolator 11 is with the peak power output by amplifying unit 10 is encouraged
Control is more than or equal to 25dB (decibel) in rated output power level, the scope of regulation attenuation.Numerical-control attenuator 13 is 6-bit
RF digital attenuator, the scope of regulation attenuation is 31.5dB, stepping 0.5dB, and the control of examined control circuit 20 is used for
The gain of radio circuit is adjusted by adjusting attenuation.First amplifier 14 is plus and blowup device, for by isolator 11
The radiofrequency signal of output is linearly amplified to first order power level.Second voltage-controlled attenuator 15 is made up of PIN diode, examined
The control of circuit 20 is controlled, for carrying out Temperature compensation for gain to radio circuit by adjusting attenuation, the model of attenuation is adjusted
Enclose more than or equal to 20dB.The implementation method of Temperature compensation for gain is：Pass through software design patterns, correspondence different temperatures section, detection control
Circuit 20 sets different voltage compensation values.When device of the present utility model is in some temperature, by detecting control circuit 20
The temperature of real-time detection apparatus, according to corresponding temperature section output corresponding voltage offset to the second voltage-controlled attenuator 15, by the
Two voltage-controlled attenuators 15 regulation attenuation to radio circuit so that carry out Temperature compensation for gain, so that penetrating under ensureing different temperatures
The constant gain of frequency circuit.Second amplifier 16 is high-gain High Linear drive amplification pipe, for the first amplifier 14 to be exported
First order power level radiofrequency signal be amplified to meet the 3rd amplifier 17 input power second level power level.The
Three amplifiers 17 are high-gain High Linear amplifier tube, the radio frequency of the second level power level for receiving the output of the second amplifier 16
Signal is simultaneously amplified to middle power rating.Coupler 18 is positive microstrip coupler, for receiving in the output of the 3rd amplifier 17
The radiofrequency signal of power rating is simultaneously divided into two-way output, detects that control circuit 20 carries out positive output wherein being used to be output to all the way
Power detection, is used to be output to circulator 19 in addition all the way.Circulator 19 is designed using low intermodulation, filter with low insertion loss, for receiving coupling
The radiofrequency signal of the output of clutch 18 is simultaneously divided into two-way output, wherein being used to be output to power amplification unit 40 all the way, in addition all the way
Control circuit 20 to carry out reverse power output detection for being output to detection and cross power control system.
Detection control circuit 20 is a microcontroller.Microcontroller is complete using the composition such as single-chip microcomputer or hardware logic electric circuit
Into the function such as basic operation control and ADC (analog-digital converter), while including input and power output detection, current detecting
Deng circuit.Input, power output detecting circuit can use peak value or average detection tube, meet detection range and progress.Temperature
Detection uses low-voltage, temperature sensors of high precision.Current detecting uses high side current detector.Detection control circuit 20 is aligned
It is to the method realized that detects of power output, reverse power output and input power：Positive power output detection is by coupling
Clutch 18 wherein exports radiofrequency signal all the way, control to enter after the decay bridge of circuit 20 by detecting detection tube carry out it is positive
Power output is detected, power is changed into voltage, into single-chip microcomputer computing, positive output power value is drawn.Reverse output work
Rate detection is wherein to export radiofrequency signal all the way by circulator 19, is entered after the decay bridge that circuit 20 is controlled by detecting
Detection tube carries out reverse power output detection, and power is changed into voltage, into single-chip microcomputer computing, reverse power output is drawn
Value.Input power detection is the energy by the radiofrequency signal by the input of the first voltage-controlled attenuator 12 of sampling, and passes through detection
Control to enter detection tube progress input power detection after the decay bridge of circuit 20, power is changed into voltage, into monolithic
Machine computing, draws input power value.
Also there is excitation amplifying unit 10 power amplifier switch, power amplifier to cross the function such as work(alarm and the alarm of power amplifier excessively stream.Power amplifier is opened
Close by controlling power tube grid voltage, to realize the output of signal level.It is by detecting reality output that power amplifier, which crosses work(alarm,
Power, is compared with threshold value, and power amplifier is closed during more than threshold value, shows that work(was alerted.The alarm of power amplifier excessively stream is actual by detecting
Operating current, is compared with predetermined threshold value, and power amplifier, display excessively stream alarm are closed during more than threshold value.
With reference to shown in Fig. 4, power amplification unit 40 include power splitter 41, multiple amplifiers 42 for being connected with power splitter 41 with
And the synthesizer 43 being connected with multiple amplifiers 42.Power splitter 41 is used to receive the middle power rating that excitation amplifying unit 10 is exported
Radiofrequency signal and be divided into multichannel and exported.Amplifier 42 is Doherty (Doherty) amplifier, and multiple amplifiers 42 are distinguished
For receiving radiofrequency signal that the correspondence of power splitter 41 exports all the way and carrying out power amplification.Synthesizer 43 is used to receive multiple put
The radiofrequency signal for the power amplification that big device 42 is exported simultaneously synthesizes and is output to output sampling unit 60 all the way.
In the present embodiment, amplifier is four, and amplifier is Doherty (Doherty) amplifier, and Doherty amplifiers are
Using newest anti-high standing-wave ratio amplifier, gain error is less than 0.2dB, and single carrier passband fluctuation is less than 0.2dB, and generally band is interior
Fluctuation is less than 1dB.Power splitter 41 be banding couple four tunnel distribute modules, frequency range support respectively 470~560NHz, 600~
700MHz, 700~800MHz, insertion loss are less than 0.5dB, and amplitude balance is less than ± 0.2dB, and phase equilibrium is less than ± 2 degree, uses
The radiofrequency signal of the middle power rating of the output of amplifying unit 10 is encouraged in reception and is divided into four tunnels and is exported.Synthesizer is banding
Four road synthesis modules are coupled, frequency range supports 470~560MHz, 600~700MHz, 700~800MHz, insertion loss respectively
Less than 0.5dB, amplitude balance is less than ± 0.2dB, and phase equilibrium is less than ± 2 degree, and mean power is more than 1000W, and peak power is big
In 3000W, output sampling is output to all the way for receiving the radiofrequency signal for the power amplification that four amplifiers 42 are exported and synthesizing
Unit 60.It should be understood that power splitter 41, synthesizer 43 can also be 0 degree of four tunnel power divider/synthesizer, it is same to can be achieved
Branch, the effect of combining.
Output sampling unit 60 is a banding coupler, and mean power is more than 500W, and peak power is more than 3000W, coupling
Isolation is more than 22dB, and inband flatness is less than 0.2dB.Export sampling unit 60 defeated including the road of first via output end 61 and second
Go out end 62, the radiofrequency signal that first via output end 61 is used for the power amplification for exporting the power amplification unit 40 of reception is output to
External equipment, the radiofrequency signal of power amplification of the second tunnel output end 62 for coupling the output of sample-power amplifying unit 40 is just
To power signal and backward power signal.Forward power signal is divided into two-way output, believes wherein being sampled all the way as forward power
Number it is used to be output to detection control unit 80 and carry out positive power output detection, in addition all the way as DPD's (digital pre-distortion)
Feedback signal is output to external equipment.Backward power signal carries out reverse power output inspection for being output to detection control unit 80
Survey.
The utility model passes through the excitation amplifying unit 10 of setting, power amplification unit 40, output sampling unit 60 and inspection
Control unit 80 is surveyed, amplification efficiency is high, small power consumption, and with excellent amplitude-frequency and phase-frequency characteristic, temperature rise control is uniform, with DTMB
The DPD calibration function perfect adaptations of driver.Meanwhile, power amplification unit 40 uses Doherty amplifiers, utilizes balance
Doherty modes are amplified, then carry out power combing, with higher reliability and uniformity, can further improve this practicality new
The power amplification efficiency of type device.Other device of the present utility model can realize the guarantor of various abnormal conditions by detection control unit 80
Shield, is well positioned to meet network application requirement.
With reference to Fig. 5, the utility model additionally provides a kind of high-power amplification method, and this method comprises the following steps：
S1, the terrestrial television radiofrequency signal by encouraging the reception DTMB driver outputs of amplifying unit 10 are simultaneously amplified to middle work(
Rate state.
S2, the radiofrequency signal that the middle power rating for encouraging the output of amplifying unit 10 is received by power amplification unit 40 are simultaneously pressed
Power requirement carries out power amplification.Specifically, power amplification unit 40 includes power splitter 41, multiple putting of being connected with power splitter 41
Big device 42 and the synthesizer 43 being connected with multiple amplifiers 42.Received by power splitter 41 in the excitation output of amplifying unit 10
The radiofrequency signal of power rating is simultaneously divided into multichannel and exported, and receives the correspondence one of power splitter 41 respectively by multiple amplifiers 42
The radiofrequency signal of road output simultaneously carries out power amplification, and penetrating for the power amplification that multiple amplifiers 42 are exported is received by synthesizer 43
Frequency signal and synthesize be output to all the way output sampling unit 60.
S3, the radiofrequency signal by exporting the power amplification that the receiving power amplifying unit 40 of sampling unit 60 is exported and progress
Sampling, output.Specifically, output sampling unit 60 includes the tunnel output end 62 of first via output end 61 and second.Pass through the first via
The radiofrequency signal for the power amplification that output end 61 exports the power amplification unit 40 of reception is output to external equipment, passes through second
The forward power signal of the radiofrequency signal of the power amplification of the output of the coupling of road output end 62 sample-power amplifying unit 40 and reversely
Power signal.Wherein, forward power signal is divided into two-way output, wherein being output to detection as forward power sampled signal all the way
Control unit 80 carries out positive power output detection, is output to external equipment as DPD feedback signal all the way in addition；Reverse work(
Rate signal output carries out reverse power output detection to detection control unit 80.
S4, carried out by detection control unit 80 whole amplifying device power, temperature and electric current detection, control.
With reference to Fig. 6, in the present embodiment, the terrestrial television radiofrequency signal of reception is amplified to middle power by excitation amplifying unit 10
The method of state, comprises the following steps：
S10, the terrestrial television radiofrequency signal that the DTMB drivers of reception are exported is amplified to by middle power by radio circuit
State is simultaneously exported.
S11, by detect control circuit 20 input power of radio circuit, power output, temperature and electric current are examined
Survey, control.
With reference to Fig. 7, in the present embodiment, radio circuit puts the terrestrial television radiofrequency signal that the DTMB drivers of reception are exported
It is big to middle power rating and the method that is exported, comprise the following steps：
S101, the terrestrial television radiofrequency signal for being exported the DTMB drivers of reception by isolator 11 carry out isolating defeated
Go out.
S102, by the first voltage-controlled attenuator 12 adjust from isolator 11 export radiofrequency signal power level with will swash
The peak power output for encouraging amplifying unit 10 is controlled in rated output power level.
S103, the gain by the regulation radio circuit of numerical-control attenuator 13.
S104, the radiofrequency signal that isolator 11 is exported is amplified to by first order power level by the first amplifier 14.
S105, by the second voltage-controlled attenuator 15 to radio circuit carry out Temperature compensation for gain.
S106, the first order power level for being exported the first amplifier 14 by the second amplifier 16 radiofrequency signal amplification
To the second level power level for the input power for meeting the 3rd amplifier 17.
S107, the radiofrequency signal for the second level power level for being exported the second amplifier 16 by the 3rd amplifier 17 are simultaneously put
Greatly to middle power rating.
S108, the radiofrequency signal of the middle power rating exported by the 3rd amplifier 17 of reception of coupler 18 are simultaneously divided into two-way
Output, wherein being output to detection control circuit 20 all the way carries out positive power output detection, is output to circulator 19 all the way in addition.
S109, the radiofrequency signal exported by the reception coupler 18 of circulator 19 are simultaneously divided into two-way output, wherein defeated all the way
Go out to power amplification unit 40, be output to detection control circuit 20 all the way in addition and carry out reverse power output detection and control.
Above example only expresses preferred embodiment of the present utility model, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the utility model the scope of the claims can not be interpreted as.It should be pointed out that for the ordinary skill of this area
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made is such as implemented to each
Different characteristic in example is combined, and these belong to protection domain of the present utility model.
Claims (10)
1. a kind of high-power amplifying device, it is characterised in that：Including：
For receiving the terrestrial television radiofrequency signal of DTMB drivers output and being amplified to the excitation amplifying unit of middle power rating；
The radiofrequency signal of the middle power rating be connected with the excitation amplifying unit, exported for reception excitation amplifying unit is simultaneously pressed
Power requirement carries out the power amplification unit of power amplification；
The radiofrequency signal of the power amplification be connected with the power amplification unit, exported for receiving power amplifying unit and progress
Sampling, the output sampling unit of output；
It is connected, for the power of whole device, temperature and electric current with the excitation amplifying unit and output sampling unit respectively
The detection control unit detected, controlled.
2. high-power amplifying device according to claim 1, it is characterised in that：The excitation amplifying unit includes：For
The terrestrial television radiofrequency signal that the DTMB drivers of reception are exported is amplified to middle power rating and the radio circuit exported；
Detection for being detected, being controlled to the input power of the radio circuit, power output, temperature and electric current controls electricity
Road.
3. high-power amplifying device according to claim 2, it is characterised in that：The radio circuit includes what is be sequentially connected in series
Isolator, the first amplifier, the second amplifier, the 3rd amplifier, coupler and circulator；The isolator is used for reception
The terrestrial television radiofrequency signal of the DTMB drivers output carries out isolation and amplifier；First amplifier is used for the isolation
The radiofrequency signal of device output is amplified to first order power level；Second amplifier is used for export first amplifier
The radiofrequency signal of first order power level is amplified to the second level power level for the input power for meeting the 3rd amplifier；Institute
Stating the 3rd amplifier is used for the radiofrequency signal of the second level power level of second amplifier output and is amplified to middle power
State；The coupler is used to receiving the radiofrequency signal of the middle power rating of the 3rd amplifier output and to be divided into two-way defeated
Go out, wherein being used to be output to the positive power output detection of detection control circuit progress all the way, be used to be output in addition all the way
The circulator；The circulator is used to receive the radiofrequency signal of the coupler output and is divided into two-way output, wherein all the way
For being output to the power amplification unit, it is used to be output to the reverse power output of the detection control circuit progress in addition all the way
Detection and control.
4. high-power amplifying device according to claim 3, it is characterised in that：The radio circuit also includes being sequentially connected in series
The first voltage-controlled attenuator, numerical-control attenuator between the isolator and first amplifier, it is serially connected in described first and puts
The second voltage-controlled attenuator greatly between device and second amplifier；First voltage-controlled attenuator is controlled circuit by the detection
Control, for adjust from the isolator export radiofrequency signal power level with by it is described excitation amplifying unit maximum
Output power is in rated output power level；The numerical-control attenuator is controlled circuit to be controlled by the detection, for adjusting
Save the gain of the radio circuit；Second voltage-controlled attenuator is controlled circuit to be controlled by the detection, for being penetrated to described
Frequency circuit carries out Temperature compensation for gain.
5. high-power amplifying device according to claim 1, it is characterised in that：The power amplification unit includes work(point
Device, the multiple amplifiers being connected with power splitter and the synthesizer being connected with multiple amplifiers；The power splitter is used to receive institute
State the radiofrequency signal of the middle power rating of excitation amplifying unit output and be divided into multichannel and exported；The multiple amplifier difference
For receiving radiofrequency signal that the correspondence of the power splitter exports all the way and carrying out power amplification；The synthesizer is used to receive institute
State the radiofrequency signal of the power amplification of multiple amplifier outputs and synthesize and be output to the output sampling unit all the way.
6. high-power amplifying device according to claim 5, it is characterised in that：The amplifier is four；The work(point
Device is that banding couples four tunnel distribute modules, for receiving the radiofrequency signal for the middle power rating that the excitation amplifying unit is exported simultaneously
It is divided into four tunnels to be exported；The synthesizer is that banding couples four road synthesis modules, for receiving four amplifiers output
Power amplification radiofrequency signal and synthesize be output to the output sampling unit all the way.
7. high-power amplifying device according to claim 5, it is characterised in that：The amplifier is four；The work(point
Device, 0 degree of tetra- tunnels of synthesizer Dou Wei power divider/synthesizer, are respectively used to receive the middle power of the excitation amplifying unit output
The radiofrequency signal of state is simultaneously divided into four tunnels and is exported and penetrated for the power amplification for receiving four amplifiers output
Frequency signal and synthesize be output to the output sampling unit all the way.
8. high-power amplifying device according to claim 1, it is characterised in that：The output sampling unit includes the first via
Output end and the second tunnel output end, the first via output end are used to put the power that the power amplification unit of reception is exported
Big radiofrequency signal is output to external equipment, and second tunnel output end is used to couple the sampling power amplification unit output
The forward power signal and backward power signal of the radiofrequency signal of power amplification.
9. high-power amplifying device according to claim 8, it is characterised in that：It is defeated that the forward power signal is divided into two-way
Go out, wherein being used to be output to the positive power output inspection of the detection control unit progress all the way as forward power sampled signal
Survey, be output to external equipment as DPD feedback signal all the way in addition；The backward power signal is used to be output to the detection
Control unit carries out reverse power output detection.
10. high-power amplifying device according to claim 1, it is characterised in that：Also include housing, the excitation amplification is single
Member, power amplification unit, output sampling unit and detection control unit are all installed in the housing, are provided with the housing
Heat-pipe radiator and fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720405896.0U CN206620209U (en) | 2017-04-18 | 2017-04-18 | A kind of high-power amplifying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720405896.0U CN206620209U (en) | 2017-04-18 | 2017-04-18 | A kind of high-power amplifying device |
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| CN201720405896.0U Expired - Fee Related CN206620209U (en) | 2017-04-18 | 2017-04-18 | A kind of high-power amplifying device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921839A (en) * | 2017-04-18 | 2017-07-04 | 深圳国人通信股份有限公司 | A kind of high-power amplifying device and its amplification method |
| CN109660214A (en) * | 2018-12-20 | 2019-04-19 | 佛山臻智微芯科技有限公司 | One kind being applied to the 5th third-generation mobile communication base station Doherty power amplifier |
| CN113391573A (en) * | 2020-03-12 | 2021-09-14 | 中国移动通信集团河北有限公司 | Signal processing circuit |
| CN117118369A (en) * | 2023-10-24 | 2023-11-24 | 四川省华盾防务科技股份有限公司 | Broadband high-power synthesis control system |
-
2017
- 2017-04-18 CN CN201720405896.0U patent/CN206620209U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921839A (en) * | 2017-04-18 | 2017-07-04 | 深圳国人通信股份有限公司 | A kind of high-power amplifying device and its amplification method |
| CN109660214A (en) * | 2018-12-20 | 2019-04-19 | 佛山臻智微芯科技有限公司 | One kind being applied to the 5th third-generation mobile communication base station Doherty power amplifier |
| CN113391573A (en) * | 2020-03-12 | 2021-09-14 | 中国移动通信集团河北有限公司 | Signal processing circuit |
| CN113391573B (en) * | 2020-03-12 | 2023-10-27 | 中国移动通信集团河北有限公司 | signal processing circuit |
| CN117118369A (en) * | 2023-10-24 | 2023-11-24 | 四川省华盾防务科技股份有限公司 | Broadband high-power synthesis control system |
| CN117118369B (en) * | 2023-10-24 | 2024-01-30 | 四川省华盾防务科技股份有限公司 | Broadband high-power synthesis control system |
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