CN107707208A - The signal power control method and control circuit of communication system equipment - Google Patents
The signal power control method and control circuit of communication system equipment Download PDFInfo
- Publication number
- CN107707208A CN107707208A CN201711016389.9A CN201711016389A CN107707208A CN 107707208 A CN107707208 A CN 107707208A CN 201711016389 A CN201711016389 A CN 201711016389A CN 107707208 A CN107707208 A CN 107707208A
- Authority
- CN
- China
- Prior art keywords
- voltage
- communication system
- system equipment
- sampling
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
Abstract
The present invention proposes the signal power control method and circuit of a kind of communication system equipment,The power output of communication system equipment can be controlled,After output radiofrequency signal coupling sampling of the communication system equipment after power amplification,The voltage envelope value of maximum is extracted from the DC voltage sequence being converted to,Integral contrast is carried out with predetermined reference voltage to the maximum voltage envelope value after sampling holding processing,Obtain control voltage,Adjustable attenuation is carried out to the output voltage of communication system equipment according to the control voltage,I.e. before the output radiofrequency signal to communication system equipment carries out power amplification,Perform adjustable attenuation operation,So that output radiofrequency signal its power output after power amplification is also controlled,It is excessive and burn the equipment such as work(power amplifying device to be unlikely to power output,So as to cause the paralysis of whole communication system.
Description
Technical field
The present invention relates to the signal work(of the signal power control field of communication system, more particularly to a kind of communication system equipment
Rate control method and control circuit.
Background technology
Communication system equipment is used for the radiofrequency signal for being used to communicate of the different systems such as output time solt signal, continuous signal,
It is up with downloading in order to more preferably realize faster in message transmission procedure, it will usually the radio frequency letter of the output to communication system equipment
Number carry out power amplification, due to the radiofrequency signal of the output of communication system equipment, its power output is usually uncontrollable, defeated
Go out the larger situation of power, amplify again by power amplifying device, it is most likely that the equipment such as power amplifying device can be burnt, so as to
Cause the paralysis of whole communication system.
The content of the invention
Based on this, the present invention proposes the signal power control method and control circuit of a kind of communication system equipment, can
The power output of communication system equipment is controlled.
A kind of signal power control method of communication system equipment, comprises the following steps：
Sampling is coupled to output radiofrequency signal of the communication system equipment after power amplification；
The output radiofrequency signal progress power detection for sampling and obtaining will be coupled, to obtain DC voltage；
The voltage envelope value of maximum is extracted from the DC voltage, and the maximum voltage envelope value is sampled
Holding is handled, to obtain smooth dc voltage；
Integral contrast is carried out to the smooth dc voltage and predetermined reference voltage, obtains control voltage；
Adjustable attenuation is carried out to the output voltage of communication system equipment according to the control voltage.
The signal power control method of above-mentioned communication system equipment, output of the communication system equipment after power amplification is penetrated
After the coupling sampling of frequency signal, the voltage envelope value of maximum is extracted from the DC voltage sequence being converted to, at sampling holding
The maximum voltage envelope value after reason carries out integral contrast with predetermined reference voltage, control voltage is obtained, according to the control
Voltage processed carries out adjustable attenuation to the output voltage of communication system equipment, i.e., enters in the output radiofrequency signal to communication system equipment
Before row power amplification, adjustable attenuation operation is performed so that output radiofrequency signal its power output after power amplification is also controlled
System, it is excessive and burn the equipment such as work(power amplifying device to be unlikely to power output, so as to cause the paralysis of whole communication system.
A kind of signal power control circuit of communication system equipment, including：Power detector, sampling holder, integration ratio
Coupler compared with device, for connecting power amplifier and the attenuator for connecting the power amplifier；
The coupler is used for the output radiofrequency signal after power amplifier amplification to communication system equipment
Coupling sampling；
The power detector is used to that the output radiofrequency signal progress power detection for sampling and obtaining will to be coupled, to obtain direct current
Voltage；
The sampling holder is used for the voltage envelope value that maximum is extracted from the DC voltage, and to described maximum
Voltage envelope value carries out sampling holding processing, to obtain smooth dc voltage；
The integral contrast device is used to carry out integral contrast to the smooth dc voltage and predetermined reference voltage, is controlled
Voltage processed；
The attenuator is used to carry out adjustable attenuation to the output voltage of communication system equipment using the control voltage.
The signal power control circuit of above-mentioned communication system equipment, by the coupler for connecting power amplifier, power
Wave detector, sampling holder, integral contrast device, the attenuator composition analog circuit for connecting the power amplifier, are realized
The auto level control of communication system equipment, and circuit structure is simple, is easily integrated, cost is low, and hardware construction difficulty is small.It is described
After coupler is to output radiofrequency signal coupling sampling of the communication system equipment after power amplification, the sampling holder is from conversion
Extracted in obtained DC voltage sequence maximum voltage envelope value, the integral contrast device to sampling holding processing after described in
Maximum voltage envelope value carries out integral contrast with predetermined reference voltage, obtains control voltage, the attenuator is according to the control
Voltage processed carries out adjustable attenuation to the output voltage of communication system equipment, i.e., leads in the output radiofrequency signal to communication system equipment
Before overpower amplifier carries out power amplification, adjustable attenuation operation is performed so that its is defeated for the output radiofrequency signal of power amplifier
Going out power also to be controlled, the power output for being unlikely to power amplifier is excessive and burns the equipment such as work(power amplifying device, from
And cause the paralysis of whole communication system.
Brief description of the drawings
Fig. 1 is a kind of signal power control method schematic flow sheet of communication system equipment of the present invention；
Fig. 2 is the signal power control method schematic flow sheet of the communication system equipment in one embodiment；
Fig. 3 is the power for the different systems signal system realized in an instantiation by the method described in the present embodiment
Control comparison diagram；
Fig. 4 is a kind of structural representation of the signal power control circuit of communication system equipment of the present invention；
Fig. 5 is the structural representation of the signal power control circuit of the communication system equipment in one embodiment；
Fig. 6 is the structural representation of the amplifier in a specific embodiment；
Fig. 7 is the structural representation of the reducer in a specific embodiment；
Fig. 8 is the structural representation of the sampling holder in a specific embodiment；
Fig. 9 is the structural representation of the sampling holder in another specific embodiment；
Figure 10 is the structural representation of the integral contrast device in a specific embodiment.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, Fig. 1 is a kind of flow signal of the signal power control method of communication system equipment of the present invention
Figure.
The signal power control method of the communication system equipment of present embodiment, it may include following steps：
S11：Sampling is coupled to output radiofrequency signal of the communication system equipment after power amplification；
S12：The output radiofrequency signal progress power detection for sampling and obtaining will be coupled, to obtain DC voltage；
S13：The voltage envelope value of maximum is extracted from the DC voltage, and the maximum voltage envelope value is carried out
Holding processing is sampled, to obtain smooth dc voltage；
S14：Integral contrast is carried out to the smooth dc voltage and predetermined reference voltage, obtains control voltage；
S15：Adjustable attenuation is carried out to the output voltage of communication system equipment according to the control voltage.
The signal power control method of the communication system equipment of present embodiment, communication system equipment is put through power
After output radiofrequency signal coupling sampling after big, the voltage of maximum is extracted in the DC voltage sequence being converted to from power detection
Envelope value, the smooth dc voltage obtained after holding processing is sampled to it and carries out integral contrast with predetermined reference voltage, is controlled
Voltage processed, adjustable attenuation is carried out to the output voltage of communication system equipment according to the control voltage, i.e., set to communication system
Before standby output radiofrequency signal carries out power amplification, adjustable attenuation operation is performed so that the output radiofrequency signal after power amplification
Its power output is also controlled, and it is excessive and burn the equipment such as work(power amplifying device to be unlikely to power output, whole so as to cause
The paralysis of individual communication system.
Wherein, the communication system equipment can be time slot signal system equipment or continuous signal system equipment；Time slot signal
System equipment can be the communication system equipment of output different ratio time slot signal.Time slot signal belongs to one kind of discrete signal, just
It is the standard signals such as time upper discontinuous radiofrequency signal such as GSM, TD-SCDMA, TDD-LTE；Continuous signal is exactly to connect on the time
The spread-spectrum signal of the radiofrequency signal that supervention is penetrated, such as CDMA, WCDMA, FDD-LTE standard.Carry out the direct current after power detection
Pressure can be time-domain signal.
If the radiofrequency signal of communication system equipment output is time slot signal, then time slot signal handles what is obtained by detection
It is the voltage waveform of similar pulse, and what this was obtained similar to pulse voltage wave shape after integral contrast circuit is not a convergence
Control voltage, so do not reach control communication system equipment output level purpose, the output work after power amplification can be caused
Rate bounce is very big, by extracting the voltage envelope value of maximum from the DC voltage being converted to, and to the maximum electricity
Pressure envelope value carries out sampling holding processing, can obtain a smooth DC voltage, is being obtained after integral contrast processing of circuit
The convergent control voltage arrived, reach the purpose of control communication system equipment output level.Therefore present embodiment, it is compatible
The output radio frequency signal attenuation of time slot signal system equipment or continuous signal system equipment controls.
For step S12, S13 and S14, in one embodiment, the output radiofrequency signal that coupling sampling obtains is carried out
Power detection, after obtaining DC voltage, the voltage envelope value of maximum is extracted from the DC voltage, and to the maximum
Voltage envelope value carry out sample holding processing, before obtaining smooth dc voltage, to comprise the following steps：
S131：The DC voltage is amplified into the first preset multiple；
Also, the voltage envelope value of maximum is extracted from the DC voltage, and the maximum voltage envelope value is entered
Row sampling holding processing, after obtaining smooth dc voltage, is accumulated to the smooth dc voltage with predetermined reference voltage
Divide and compare, before obtaining control voltage, comprise the following steps：
S132：The maximum voltage envelope value for sample after holding is handled is reduced into the second preset multiple.
The present embodiment, if time slot signal system equipment exports different ratio time slot signal within a period of time, such as it is single when
Gap signal 10000000 and full time slot signal 11111111, then the power output deviation after power amplification can be bigger,
Before the voltage envelope value that maximum is extracted from the DC voltage being converted to, to default times of DC voltage amplification first
Number, the voltage envelope value of maximum is then extracted again, then the maximum voltage envelope value is carried out after sampling holding processing,
Preset multiple is reduced, the control voltage that final integrated comparison obtains can be respectively less than the power output of different ratio time slot signal
Predetermined deviation, such as respectively less than 0.3dB.As shown in figure 3, Fig. 3 is to pass through the method described in the present embodiment in an instantiation
The Power Control comparison diagram of the different systems signal system of realization, including when WADMA signal systems, CDMA signal systems, GSM are mono-
Gap signal system, GSM full time slots signal system, EDGE full time slots signal system, TD-SCDMA signal systems and TDD-LTE signals
The Power Control comparison diagram of system, the output power value deviation of radiofrequency signal after decay of unlike signal system are less than 0.3dB.
The present invention also proposes a kind of signal power control circuit of communication system equipment.
Referring to Fig. 4, Fig. 4 is a kind of structural representation of the signal power control circuit of communication system equipment of the present invention
Figure, the signal power control method of communication system equipment as described above can be achieved.
The signal power control circuit of communication system equipment described in present embodiment, it may include：Put for connecting power
The coupler 10 of big device, power detector 20, sampling holder 30, integral contrast device 40 and for connecting the power amplification
The attenuator 50 of device；Specifically, the input of the coupler 10 is connected with the output end of the power amplifier, the coupling
The input of the output end connection power detector 20 of device 10；The input of the sampling holder 30 and the power detector
20 output end connection, the output end of the sampling holder are connected with the input of the integral contrast device 40, the decay
The first input end of device 50 is connected with the output end of the integral contrast device 40, the second input of the attenuator 50 with it is described
The output end connection of communication system equipment, the output end of the attenuator 50 are connected with the input of the power amplifier.
The coupler 10 is used to believe output radio frequency of the communication system equipment after power amplifier amplification
Number coupling sampling；
The power detector 20 is used to that the output radiofrequency signal progress power detection for sampling and obtaining will to be coupled, straight to obtain
Flow voltage；
The sampling holder 30 is used for the voltage envelope value that maximum is extracted from the DC voltage, and to the maximum
Voltage envelope value carry out sample holding processing, to obtain smooth dc voltage；
The integral contrast device 40 is used to carry out integral contrast to the smooth dc voltage and predetermined reference voltage, obtains
Control voltage；
The attenuator 50 is used to carry out adjustable attenuation to the output voltage of communication system equipment using the control voltage.
The signal power control circuit of communication system equipment described in present embodiment, by for connecting power amplifier
Coupler, power detector, sampling holder, integral contrast device and for work(that connect the communication system equipment and described
The attenuator of rate amplifier forms analog circuit, realizes the auto level control of communication system equipment, and circuit structure is simple, easily
In integrating, cost is low, and hardware construction difficulty is small.The coupler is believed output radio frequency of the communication system equipment after power amplification
Number coupling sampling after, the sampling holder extracted from the DC voltage sequence maximum voltage envelope value, the integration
Comparator carries out integral contrast to the smooth dc voltage after sampling holding processing with predetermined reference voltage, obtains control electricity
Pressure, the attenuator carries out adjustable attenuation according to the control voltage to the output voltage of communication system equipment, i.e., to communication
Before the output radiofrequency signal of system equipment carries out power amplification by power amplifier, adjustable attenuation operation is performed so that power
Its power output of the output radiofrequency signal of amplifier is also controlled, and the power output for being unlikely to power amplifier is excessive and burns
The equipment such as work(power amplifying device, so as to cause the paralysis of whole communication system.
Wherein, the attenuator can be ATT attenuators.The coupler 10 can amplify power of link etc. according to radio frequency will
Ask, select the different degrees of coupling such as 10dB, 20dB, 30dB coupler；Resistance direct-coupling may be selected according to the form of coupler
Device, microstrip coupler or SMD directional coupler etc..
Power detector 20 optional PIN detection tubes, envelope detection pipe, RMS quadratic detections pipe or the logarithmic detector pipe
Deng.When laying the power detector 20, it may be configured to ensure the peripheral circuit of the integrality of the DC voltage of output.
The communication system equipment can be time slot signal system equipment or continuous signal system equipment；Time slot signal system is set
Standby can be the communication system equipment of output different ratio time slot signal.Time slot signal belongs to one kind of discrete signal, is exactly the time
The standard signals such as upper discontinuous radiofrequency signal such as GSM, TD-SCDMA, TDD-LTE；Continuous signal is exactly transmitting continuous in time
Radiofrequency signal, such as CDMA, WCDMA, FDD-LTE standard spread-spectrum signal.Carrying out the DC voltage after power detection can be
Time-domain signal.
If the radiofrequency signal of communication system equipment output is time slot signal, then time slot signal passes through power detector detection
What processing obtained is the voltage waveform of similar pulse, and this is obtained not similar to pulse voltage wave shape after integral contrast circuit
It is a convergent control voltage, so not reaching the purpose of control communication system equipment output level, power amplification can be caused
Power output bounce afterwards is very big, and the sampling holder 30 of present embodiment from the DC voltage being converted to by extracting
Maximum voltage envelope value, and carry out sampling holding processing to the maximum voltage envelope value, can obtain one it is smooth straight
Voltage is flowed, the convergent control voltage obtained after integral contrast circuit is integrated in integral contrast device 40, is passed through
Attenuator 50 reaches the purpose of control communication system equipment output level.Therefore present embodiment, compatible time slot signal system
The control of the output radio frequency signal attenuation of equipment of uniting or continuous signal system equipment.
In one embodiment, referring to Fig. 5, the signal power control circuit of described communication system equipment, in addition to：
Amplifier 60 and reducer 70；The amplifier 60 is connected with the sampling holder 30, the power detector 20 respectively,
The reducer 70 is connected with the sampling holder 30, the integral contrast device 40 respectively；
The amplifier 60 is used to that the output radiofrequency signal progress power detection for sampling and obtaining will to be coupled, to obtain direct current
After voltage, the voltage envelope value of maximum is extracted from the DC voltage, and the maximum voltage envelope value is adopted
Sample holding is handled, so that before obtaining smooth dc voltage, it is pre- to amplify first to the DC voltage obtained from the power detector
If multiple；
The reducer 70 is used for the voltage envelope value that maximum is extracted from the DC voltage, and to the maximum electricity
Pressure envelope value carries out sampling holding processing, after obtaining smooth dc voltage, to the smooth dc voltage and preset reference
Voltage carries out integral contrast, before obtaining control voltage, described in sample after holding is handled as the sampling holder
Smooth dc voltage reduces the second preset multiple.
The present embodiment, if time slot signal system equipment exports different ratio time slot signal within a period of time, such as it is single when
Gap signal 10000000 and full time slot signal 11111111, then the power output deviation of power amplifier can be bigger, is adopting
Before the voltage envelope value that maximum is extracted in the DC voltage that sample retainer 20 is converted to from power detector 20, pass through amplification
Device 60 amplifies the first preset multiple to the DC voltage, then extracts the voltage envelope of maximum by sampling holder 20 again
Value, then the maximum voltage envelope value is carried out after sampling holding processing, preset multiple is reduced by reducer 70, most
The control voltage that the integrated integral contrast of comparator 40 obtains eventually, by after the adjustable attenuation of attenuator 50 different ratio time slot can believe
Number power output be respectively less than predetermined deviation, such as respectively less than 0.3dB.As shown in figure 3, Fig. 3 is to pass through in an instantiation
The Power Control for the different systems signal system that the signal power control circuit of communication system equipment described in the present embodiment is realized
Comparison diagram, including the mono- time slot signal system of WADMA signal systems, CDMA signal systems, GSM, GSM full time slots signal system,
The Power Control comparison diagram of EDGE full time slots signal system, TD-SCDMA signal systems and TDD-LTE signal systems, unlike signal
The output power value deviation of radiofrequency signal after decay of system is less than 0.3dB.
The amplifier 60 concretely N times of amplifier, as shown in fig. 6, the amplifier 60 includes the first operation amplifier
Device U1, first resistor R1 and second resistance R2 and the reverse integral circuit for keeping DC voltage；
The output end of the first operational amplifier U1 is reverse defeated by second resistance R2 and the first operational amplifier U1's
Entering end connection, the output end of the first operational amplifier U1 is connected with the input of the sampling holder 30, and described first
Operational amplifier U1 output end passes sequentially through second resistance R2 and first resistor R1 ground connection, and the first operational amplifier U1's is same
Phase input is connected by reverse integral circuit with the output end of power detector 20.Specifically, reverse integral circuit can be by electricity
R0 and electric capacity C0 compositions are hindered, operational amplifier U1 in-phase input end is connected by the output end of electric capacity C0 and power detector 20
Connect, the output end of power detection pipe 20 is grounded by resistance R0.First preset multiple of the amplifier amplification is by first resistor
Ratio between R1 and second resistance R2 determines.
The reducer 70 can be N times of reducer, in a specific embodiment, as shown in fig. 7, the reducer 70 wraps
Voltage follower U2,3rd resistor R3 and the 4th resistance R4 are included, voltage follower U2 in-phase input end passes through the 4th resistance R4
Connect the output end of the sampling holder, voltage follower U2 in-phase input end is grounded by 3rd resistor R3, voltage with
Connected with device U2 inverting input and the output end of voltage follower, voltage follower U2 output end and the integral contrast
The input connection of device 40.
Second preset multiple N of the diminution of the reducer 70 determines by 3rd resistor R3 and the 4th resistance R4, reducer
The multiple of diminution is identical with the multiple that amplifier amplifies.
In a specific embodiment, as shown in figure 8, the sampling holder may include triode K1, first integral electricity
Hold C2 and the 5th resistance R5；The base stage of the triode K1 connects the output end of the amplifier 60, and the triode K1's penetrates
Pole is grounded by the first integral electric capacity C2, and the emitter-base bandgap grading of the triode K1 is also grounded by the 5th resistance R5, three pole
Pipe K1 emitter-base bandgap grading is connected with the input of the reducer.
In another specific embodiment, as shown in figure 9, the sampling holder may include diode D1, second integral
Electric capacity C3 and the 6th resistance R6；The anode of the diode D1 connects the output end of the amplifier 60, the diode D1's
Negative electrode is grounded by second integral electric capacity C3, and the negative electrode of the diode D2 is grounded by the 6th resistance R6, the diode D1
Negative electrode be connected with the input of the reducer 70.
In a specific embodiment, as shown in Figure 10, the integral contrast device 40 include the second operational amplifier U3 with
And capacitor C4, the second operational amplifier U3 inverting input are used to access preset reference level, second computing
Amplifier U3 in-phase input end is connected by the capacitor C4 with the second operational amplifier U3 output end, second fortune
The output end for calculating amplifier is connected with the input of the attenuator.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply each technical characteristic in example be possible to combination be all described, as long as but lance is not present in the combination of these technical characteristics
Shield, all should be the scope that this specification is recorded.
Embodiment described above only expresses several embodiments of the present invention, and its description is more specific and detailed, but not
Therefore the limitation to the scope of the claims of the present invention can be interpreted as.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. the signal power control method of a kind of communication system equipment, it is characterised in that comprise the following steps：
Sampling is coupled to output radiofrequency signal of the communication system equipment after power amplification；
The output radiofrequency signal progress power detection for sampling and obtaining will be coupled, to obtain DC voltage；
The voltage envelope value of maximum is extracted from the DC voltage, and sampling holding is carried out to the maximum voltage envelope value
Processing, to obtain smooth dc voltage；
Integral contrast is carried out to the smooth dc voltage and predetermined reference voltage, obtains control voltage；
Adjustable attenuation is carried out to the output voltage of communication system equipment according to the control voltage.
2. the signal power control method of communication system equipment according to claim 1, it is characterised in that
The output radiofrequency signal progress power detection for sampling and obtaining will be coupled, after obtaining DC voltage, from the direct current
The voltage envelope value of maximum is extracted in pressure, and the maximum voltage envelope value is carried out to sample holding processing, it is smooth to obtain
Before DC voltage, comprise the following steps：
The DC voltage is amplified into the first preset multiple；
Also, the voltage envelope value of maximum is extracted from the DC voltage, and the maximum voltage envelope value is adopted
Sample holding is handled, and after obtaining smooth dc voltage, integration ratio is carried out to the smooth dc voltage and predetermined reference voltage
Compared with before obtaining control voltage, comprising the following steps：
The smooth dc voltage is reduced into the second preset multiple.
3. according to the signal power control method of the communication system equipment of claim 1 or 2, it is characterised in that the communication system
Equipment of uniting is time slot signal system equipment or continuous signal system equipment.
A kind of 4. signal power control circuit of communication system equipment, it is characterised in that including：Power detector, sampling are kept
Device, integral contrast device, the coupler for connecting power amplifier and the attenuator for connecting the power amplifier；
The coupler is used to couple output radiofrequency signal of the communication system equipment after power amplifier amplification
Sampling；
The power detector is used to that the output radiofrequency signal progress power detection for sampling and obtaining will to be coupled, to obtain direct current
Pressure；
The sampling holder is used for the voltage envelope value that maximum is extracted from the DC voltage, and to the maximum voltage
Envelope value carries out sampling holding processing, to obtain smooth dc voltage；
The integral contrast device is used to carry out integral contrast to the smooth dc voltage and predetermined reference voltage, obtains control electricity
Pressure；
The attenuator is used to carry out adjustable attenuation to the output voltage of communication system equipment using the control voltage.
5. the signal power control circuit of communication system equipment according to claim 4, it is characterised in that also include：Put
Big device and reducer；
The amplifier is connected with the sampling holder, the power detector respectively, for will couple what sampling obtained
Export radiofrequency signal and carry out power detection, after obtaining DC voltage, the voltage bag of maximum is extracted from the DC voltage
Network value, and carry out sampling holding processing to the maximum voltage envelope value, with before obtaining smooth dc voltage, to from described
The DC voltage that power detector obtains amplifies the first preset multiple；
The reducer is connected with the sampling holder, the integral contrast device respectively, for being carried from the DC voltage
The voltage envelope value of maximum is taken, and the maximum voltage envelope value is carried out to sample holding processing, to obtain smooth direct current electricity
After pressure, integral contrast is carried out to the smooth dc voltage and predetermined reference voltage, will be by described before obtaining control voltage
Sampling holder carries out sampling the smooth dc voltage the second preset multiple of diminution after holding processing.
6. the signal power control circuit of communication system equipment according to claim 5, it is characterised in that
The amplifier includes the first operational amplifier, first resistor second resistance and the reverse product for keeping DC voltage
Parallel circuit；
The output end of first operational amplifier is connected by second resistance with the reverse input end of the first operational amplifier, institute
The output end for stating the first operational amplifier is connected with the input of the sampling holder, the output of first operational amplifier
End passes sequentially through second resistance and first resistor ground connection, the in-phase input end of the first operational amplifier pass through reverse integral circuit
It is connected with the output end of power detector.
7. the signal power control circuit of communication system equipment according to claim 6, it is characterised in that
The reducer includes voltage follower, 3rd resistor and the 4th resistance；
The in-phase input end of the voltage follower is connected by the 4th resistance with the output end of the sampling holder, the electricity
The in-phase input end of pressure follower is grounded by 3rd resistor, the output end of the voltage follower and the voltage follower
Inverting input is connected, and the output end of the voltage follower is connected with the input of the integral contrast device.
8. the signal power control circuit of the communication system equipment according to any one of claim 5-7, it is characterised in that
The sampling holder includes triode, first integral electric capacity and the 5th resistance；Described in the base stage connection of the triode
The output end of amplifier, the emitter-base bandgap grading of the triode are also logical by the first integral capacity earth, the emitter-base bandgap grading of the triode
The 5th resistance eutral grounding is crossed, the emitter-base bandgap grading of the triode is connected with the input of the reducer；
Or,
The sampling holder includes diode, second integral electric capacity and the 6th resistance；The anode of the negative electrode of the diode connects
The output end of the amplifier is connect, the negative electrode of the diode is led to by second integral capacity earth, the negative electrode of the diode
The 6th resistance eutral grounding is crossed, the negative electrode of the diode is connected with the input of the reducer.
9. the signal power control circuit of the communication system equipment according to any one of claim 5-7, it is characterised in that
The integral contrast device includes the second operational amplifier and capacitor, the inverting input of second operational amplifier
For accessing preset reference level, the in-phase input end of second operational amplifier is put by the capacitor and the second computing
The output end connection of big device, the output end of second operational amplifier are connected with the input of the attenuator.
10. the signal power control circuit of the communication system equipment according to any one of claim 4-7, its feature exist
In, in addition to switchplexer；
The coupler is connected by the switchplexer with the power detector；The coupler and the radio frequency
The anode connection of diode switch, the power detector are connected with the negative electrode of the rf diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711016389.9A CN107707208B (en) | 2017-10-25 | 2017-10-25 | Signal power control method and control circuit for communication system equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711016389.9A CN107707208B (en) | 2017-10-25 | 2017-10-25 | Signal power control method and control circuit for communication system equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107707208A true CN107707208A (en) | 2018-02-16 |
| CN107707208B CN107707208B (en) | 2021-09-24 |
Family
ID=61181618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711016389.9A Active CN107707208B (en) | 2017-10-25 | 2017-10-25 | Signal power control method and control circuit for communication system equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107707208B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923757A (en) * | 2018-07-02 | 2018-11-30 | 成都九洲电子信息系统股份有限公司 | The detection of radio frequency power output closed loop and regulating device |
| CN110768684A (en) * | 2019-10-31 | 2020-02-07 | 中电科仪器仪表有限公司 | Amplitude control device and method for time slot signal |
| CN111294910A (en) * | 2020-02-06 | 2020-06-16 | 青岛合启立智能科技有限公司 | LoRa power detection method, device and transmitting circuit |
| CN111669134A (en) * | 2020-06-02 | 2020-09-15 | 京信通信系统（中国）有限公司 | Power amplifier power control method, system, equipment and storage medium in TDD mode |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1682436A (en) * | 2002-09-27 | 2005-10-12 | 株式会社日立国际电气 | Amplification device |
| CN200966052Y (en) * | 2006-09-08 | 2007-10-24 | 京信通信技术(广州)有限公司 | A time slot signal system automatic level control circuit |
| CN101557204A (en) * | 2009-05-22 | 2009-10-14 | 天津大学 | Automatic gain control circuit of multistage high dynamic range used in ultrasonic distance measurement |
| CN102754338A (en) * | 2009-11-23 | 2012-10-24 | 希泰特微波公司 | Logarithmic mean-square power detector with servo control loop |
| CN102801391A (en) * | 2012-08-10 | 2012-11-28 | 昆山美博通讯科技有限公司 | Modular feedforward power amplifier |
| CN102946281A (en) * | 2012-11-01 | 2013-02-27 | 青岛海信宽带多媒体技术有限公司 | Method and device for controlling signal power |
| CN103401516A (en) * | 2013-07-25 | 2013-11-20 | 京信通信系统（中国）有限公司 | Radio frequency protector |
| CN103647509A (en) * | 2013-12-18 | 2014-03-19 | 中国电子科技集团公司第四十一研究所 | Circuit for realizing automatic level control of signal and control method |
| CN105262451A (en) * | 2015-10-27 | 2016-01-20 | 广州海格通信集团股份有限公司 | Fast automatic power closed-loop control device and method of wireless power amplifier |
| CN107070427A (en) * | 2017-04-24 | 2017-08-18 | 深圳国人通信股份有限公司 | A kind of power control circuit and its control method |
-
2017
- 2017-10-25 CN CN201711016389.9A patent/CN107707208B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1682436A (en) * | 2002-09-27 | 2005-10-12 | 株式会社日立国际电气 | Amplification device |
| CN200966052Y (en) * | 2006-09-08 | 2007-10-24 | 京信通信技术(广州)有限公司 | A time slot signal system automatic level control circuit |
| CN101557204A (en) * | 2009-05-22 | 2009-10-14 | 天津大学 | Automatic gain control circuit of multistage high dynamic range used in ultrasonic distance measurement |
| CN102754338A (en) * | 2009-11-23 | 2012-10-24 | 希泰特微波公司 | Logarithmic mean-square power detector with servo control loop |
| CN102801391A (en) * | 2012-08-10 | 2012-11-28 | 昆山美博通讯科技有限公司 | Modular feedforward power amplifier |
| CN102946281A (en) * | 2012-11-01 | 2013-02-27 | 青岛海信宽带多媒体技术有限公司 | Method and device for controlling signal power |
| CN103401516A (en) * | 2013-07-25 | 2013-11-20 | 京信通信系统（中国）有限公司 | Radio frequency protector |
| CN103647509A (en) * | 2013-12-18 | 2014-03-19 | 中国电子科技集团公司第四十一研究所 | Circuit for realizing automatic level control of signal and control method |
| CN105262451A (en) * | 2015-10-27 | 2016-01-20 | 广州海格通信集团股份有限公司 | Fast automatic power closed-loop control device and method of wireless power amplifier |
| CN107070427A (en) * | 2017-04-24 | 2017-08-18 | 深圳国人通信股份有限公司 | A kind of power control circuit and its control method |
Non-Patent Citations (2)
| Title |
|---|
| CALOGERO D. PRESTI 等: "A 25 dBm Digitally Modulated CMOS Power Amplifier for WCDMA/EDGE/OFDM With Adaptive Digital Predistortion and Efficient Power Control", 《IEEE JOURNAL OF SOLID-STATE CIRCUITS》 * |
| 王炳基: "微波超宽带功率电平控制技术研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923757A (en) * | 2018-07-02 | 2018-11-30 | 成都九洲电子信息系统股份有限公司 | The detection of radio frequency power output closed loop and regulating device |
| CN110768684A (en) * | 2019-10-31 | 2020-02-07 | 中电科仪器仪表有限公司 | Amplitude control device and method for time slot signal |
| CN110768684B (en) * | 2019-10-31 | 2021-08-06 | 中电科思仪科技股份有限公司 | Amplitude control device and method for time slot signal |
| CN111294910A (en) * | 2020-02-06 | 2020-06-16 | 青岛合启立智能科技有限公司 | LoRa power detection method, device and transmitting circuit |
| CN111669134A (en) * | 2020-06-02 | 2020-09-15 | 京信通信系统（中国）有限公司 | Power amplifier power control method, system, equipment and storage medium in TDD mode |
| CN111669134B (en) * | 2020-06-02 | 2023-10-20 | 京信网络系统股份有限公司 | Method, system, equipment and storage medium for controlling power of power amplifier under TDD system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107707208B (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107707208A (en) | The signal power control method and control circuit of communication system equipment | |
| CN204103932U (en) | Phase amplitude-matched multi-channel radio frequency simulator | |
| CN106877892B (en) | A kind of anti-interference reception circuit structure, method and apparatus | |
| CN101403715B (en) | Nano-upgrading sample nuclear magnetic resonance detection digital receiver | |
| DE19710474A1 (en) | Temperature compensated logarithmic amplifier for mobile telephone | |
| CN102946281A (en) | Method and device for controlling signal power | |
| CN202197283U (en) | Communication relay device and standing-wave ratio detecting device of the communication relay device | |
| CN204046583U (en) | High dynamically high-gain broadband receiver | |
| CN104092471B (en) | A kind of high dynamically high-gain broadband receiver | |
| CN107911093A (en) | Automatic growth control agc circuit, method and apparatus | |
| CN105978493A (en) | Ultra wide band multifrequency multimode power amplification system | |
| CN207543126U (en) | Computer networks integration device | |
| CN104167991B (en) | Variable gain low-noise amplifying circuit and its variable gain method and receiver | |
| CN203057121U (en) | AGC circuit quick control system based on linear receiver | |
| CN206060732U (en) | A kind of wide dynamic range AFE (analog front end) | |
| CN107241072A (en) | Power amplifier device and method | |
| CN209218099U (en) | The comprehensive survey device of NB-IoT terminal with 8 ports | |
| CN208782780U (en) | Power amplification circuit | |
| CN207399144U (en) | A kind of broadband Doherty power amplifier | |
| CN109120289A (en) | A kind of short-wave radio frequency front end processing block and method | |
| CN204790442U (en) | A digital ALC circuit for link is amplified to repeater | |
| CN206620106U (en) | A kind of power control circuit | |
| CN107070427A (en) | A kind of power control circuit and its control method | |
| CN209046597U (en) | Radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link | |
| CN106532197A (en) | Wideband digital adjustable phase shifter for accelerator random cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200109 Address after: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Applicant after: Jingxin Communication System (China) Co., Ltd. Address before: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Applicant before: Jingxin Communication System (China) Co., Ltd. Applicant before: Jingxin Communication System (Guangzhou) Co., Ltd. Applicant before: Jingxin Communication Technology (Guangzhou) Co., Ltd. Applicant before: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Applicant after: Jingxin Network System Co.,Ltd. Address before: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Applicant before: Comba Telecom System (China) Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |