CN109379145A - A kind of signal processing circuit, terminal device and signal processing method - Google Patents
A kind of signal processing circuit, terminal device and signal processing method Download PDFInfo
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- CN109379145A CN109379145A CN201811423747.2A CN201811423747A CN109379145A CN 109379145 A CN109379145 A CN 109379145A CN 201811423747 A CN201811423747 A CN 201811423747A CN 109379145 A CN109379145 A CN 109379145A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
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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
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
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Abstract
The present invention provides a kind of signal processing circuit, terminal device and signal processing method, the signal processing circuit includes RF transceiver, amplification module, directional coupler, radio frequency connector and antenna, the signal processing circuit further includes switch module and envelope detection module, wherein: the first end of the switch module is connect with the directional coupler, the second end of the switch module is connect with the first end of the envelope detection module, and the radiofrequency signal that the switch module is used to couple the directional coupler amplifies processing, attenuation processing or transmission process；The second end of the envelope detection module is connect with the RF transceiver, and the envelope detection module is used to detect the coupled power of the radiofrequency signal by switch module processing.Amplify processing, attenuation processing or transmission process since switch module is used for the radiofrequency signal that couples to the directional coupler, so as to improve radiofrequency signal power detection accuracy.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of signal processing circuits, terminal device and signal processing side
Method.
Background technique
With the rapid development of terminal technology, terminal device has become essential a kind of tool in people's life,
And the various aspects for user's life are brought great convenience.The power detection of the radiofrequency signal of terminal device at present is
Radiofrequency signal on circuit is coupled to RF transceiver by directional coupler, to learn the power of radiofrequency signal.But
In the prior art, for terminal device after plus antenna, there may be deviations for the degree of coupling of directional coupler, will lead to so logical
Cross directional coupler be directly coupled to RF transceiver radiofrequency signal deviation it is larger, so as to cause the power detection of radiofrequency signal
Accuracy it is lower.
Summary of the invention
The embodiment of the present invention provides a kind of signal processing circuit, terminal device and signal processing method, is set with solving terminal
The lower problem of the accuracy of the power detection of standby radiofrequency signal.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows:
In a first aspect, the embodiment of the invention provides a kind of signal processing circuit, including RF transceiver, amplification module,
Directional coupler, radio frequency connector and antenna, the signal processing circuit further include switch module and envelope detection module,
In: the first end of the switch module is connect with the directional coupler, and the second end of the switch module and the envelope are examined
The first end of wave module connects, and the radiofrequency signal that the switch module is used to couple the directional coupler amplifies place
Reason, attenuation processing or transmission process；The second end of the envelope detection module is connect with the RF transceiver, the envelope
Detection module is used to detect the coupled power of the radiofrequency signal by switch module processing.
Second aspect, the embodiment of the present invention also provide a kind of terminal device, including above-mentioned signal processing circuit.
The third aspect, the embodiment of the present invention also provide a kind of signal processing method, are applied to above-mentioned terminal device, the side
Method includes: detection target component, and the target component includes at least one in the power consumption electric current and/or gain of power amplifier
?；According to the target component, controls the radiofrequency signal that the switch module couples the directional coupler and amplify place
Reason, attenuation processing or transmission process.
Fourth aspect, the embodiment of the present invention also provide a kind of terminal device, including processor, memory and are stored in described
It is real when the computer program is executed by the processor on memory and the computer program that can run on the processor
The step of existing above-mentioned signal processing method.
5th aspect, the embodiment of the present invention also provide a kind of computer readable storage medium, the computer-readable storage
Computer program is stored on medium, the step of computer program realizes above-mentioned signal processing method when being executed by processor.
A kind of signal processing circuit of the embodiment of the present invention, including RF transceiver, amplification module, directional coupler, penetrate
Frequency connector and antenna, the signal processing circuit further include switch module and envelope detection module, in which: the switch module
First end connect with the directional coupler, the first end of the second end of the switch module and the envelope detection module connects
It connects, the radiofrequency signal that the switch module is used to couple the directional coupler amplifies processing, attenuation processing or biography
Defeated processing；The second end of the envelope detection module is connect with the RF transceiver, and the envelope detection module is for detecting
By the coupled power for the radiofrequency signal that the switch module is handled.Since switch module is used to couple the directional coupler
Radiofrequency signal amplify processing, attenuation processing or transmission process, so as to improve the power detection of radiofrequency signal
Accuracy.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of signal processing circuit provided in an embodiment of the present invention；
Fig. 2 is one of the structural schematic diagram of switch module provided in an embodiment of the present invention；
Fig. 3 is the second structural representation of switch module provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of proportional power amplifier in the same direction provided in an embodiment of the present invention；
Fig. 5 is the flow chart of signal processing method provided in an embodiment of the present invention；
Fig. 6 is the power consumption electric current of power amplifier provided in an embodiment of the present invention and the relation schematic diagram of phase；
Fig. 7 is the gain of power amplifier provided in an embodiment of the present invention and the relation schematic diagram of phase；
Fig. 8 is the structural schematic diagram of terminal device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It is the structural schematic diagram of signal processing circuit provided in an embodiment of the present invention referring to Fig. 1, Fig. 1, as shown in Figure 1, packet
RF transceiver 1, amplification module, directional coupler 2, radio frequency connector 3 and antenna 4 are included, the signal processing circuit further includes
Switch module 5 and envelope detection module 6, in which: the first end of the switch module 5 is connect with the directional coupler 2, described
The second end of switch module 5 is connect with the first end of the envelope detection module 6, and the switch module 5 is used for the orientation
The radiofrequency signal that coupler 2 couples amplifies processing, attenuation processing or transmission process；The of the envelope detection module 6
Two ends are connect with the RF transceiver 1, and the envelope detection module 6 is used to detect penetrating by the switch module 5 processing
The coupled power of frequency signal.
In the present embodiment, above-mentioned amplification module includes power amplifier 7, duplexer 8 and main collection switch 9.As shown in Figure 1,
On the access of RF transceiver 1 and directional coupler 2, it is sequentially connected power amplifier 7, duplexer 8 and main collection switch 9.
Also, duplexer 8 is connect with RF transceiver 1.Directional coupler 2 is connect by radio frequency connector 3 with antenna 4.
In the present embodiment, the first end of the switch module 5 is connect with the directional coupler 2, and the first of switch module 5
Hold the radiofrequency signal for receiving the coupling of directional coupler 2.The second end of the switch module 5 and the envelope detection module 6
First end connection, the second end of the switch module 5 is used to the radiofrequency signal after processing being sent to envelope detection module 6
Carry out power detection.The envelope detection module 6 can detected the maximum amplitude of radiofrequency signal, it is assumed that be U, according to U
It can detecte the coupled power of the radiofrequency signal handled by the switch module 5 with the corresponding relationship of power.
In the present embodiment, the radiofrequency signal that above-mentioned switch module 5 is used to couple the directional coupler 2 amplifies place
Which reason, attenuation processing or transmission process, the radiofrequency signal that specific switch module 5 couples the directional coupler 2 carry out
Kind processing can be determined according to the parameter that processor obtains.These parameters can be the gain of power amplifier 7, power is put
The power consumption electric current of big device 7 or the phase of radiofrequency signal etc..Certainly in addition to this can also according to some other parameters, or
The comprehensive many kinds of parameters of person determines which kind of processing carried out, and to this, this embodiment is not limited.
In this way, since switch module 5 is for amplifying processing to the radiofrequency signal that the directional coupler 2 couples, declining
Subtract processing or transmission process, so as to improve radiofrequency signal power detection accuracy.
Optionally, the switch module 5 is used for the case where the degree of coupling of the directional coupler 2 is greater than the standard degree of coupling
Under, processing is amplified to the radiofrequency signal of the directional coupler 2 coupling；
Alternatively, the switch module 5 is used to be less than the feelings of the standard degree of coupling in the degree of coupling of the directional coupler 2
Under condition, attenuation processing is carried out to the radiofrequency signal of the directional coupler 2 coupling；
Alternatively, the switch module 5 is for matched in the degree of coupling of the directional coupler 2 and the standard degree of coupling
In the case of, transmission process is carried out to the radiofrequency signal of the directional coupler 2 coupling.
In the embodiment, the numerical value of the above-mentioned standard degree of coupling can be arranged according to specific circumstances, to this this implementation
Mode is not construed as limiting.In the case where the degree of coupling of the directional coupler 2 is greater than the standard degree of coupling, it is meant that directional coupler
The signal magnitude of 2 coupled RF signal to power detection accesses becomes smaller, at this time to the radiofrequency signal of the directional coupler 2 coupling
Processing is amplified, the amplitude of power detection is compensated, improves the accuracy of power detection.
In the embodiment, in the case where the degree of coupling of the directional coupler 2 is less than the standard degree of coupling, meaning
The signal magnitude of directional coupler 2 coupled RF signal to power detection access become larger, at this time to 2 coupling of directional coupler
The radiofrequency signal of conjunction carries out attenuation processing, is reduced the amplitude of power detection, improves the accuracy of power detection.
It, can under the degree of coupling and the matched situation of the standard degree of coupling of the directional coupler 2 in the embodiment
The degree of coupling to be the directional coupler 2 is equal with the standard degree of coupling, or is also possible to the coupling of directional coupler 2
Deviation between degree and the standard degree of coupling is less than in the deviation range allowed etc..Due to the coupling of the directional coupler 2
It is right to be matched with the standard degree of coupling, so as to directly be transmitted to the radiofrequency signal of the directional coupler 2 coupling
Processing, without amplifying processing or attenuation processing.
Optionally, as shown in Fig. 2, the switch module 5 includes:
First switch 51, second switch 52, transmission channel 53, amplification channel 54 and attenuation path 55；
Wherein, the first contact 511 of the first switch 51 is connect with the directional coupler 2, the first switch 51
The second contact 512 connect with the first end of the transmission channel 53, the third contact 513 of the first switch 51 is put with described
The first end connection in big channel 54, the 4th contact 514 of the first switch 51 is connect with the first end of the attenuation path 55；
First contact 521 of the second switch 52 is connect with the first end of the envelope detection module 6, and described second opens
Second contact 522 of pass 52 is connect with the second end of the transmission channel 53, the third contact 523 of the second switch 52 and institute
State the second end connection of amplification channel 54, the second end of the 4th contact 524 and the attenuation path 55 of the second switch 52
Connection.
In the embodiment, it can be assumed that the standard degree of coupling is that the output loading of directional coupler 2 is coupling under 50 ohm
It is right.When the output loading of directional coupler 2 is 50 ohm, the first contact 511 and the second contact 512 of first switch 51 are led
It is logical, the first contact 521 of second switch 52 and the conducting of the second contact 522.Standard parameter is obtained at this time, be can be written into terminal and is set
It is standby.
After adding antenna 4, the output loading of directional coupler 2 is not at 50 ohm, the coupling of directional coupler 2 at this time
Degree can be more much larger than the standard degree of coupling, such as 2db, it is meant that 2 coupled RF signal of directional coupler to power detection access
Signal magnitude become smaller 2db.Then the first contact 511 and third contact 513 conducting of first switch 51 at this time, second switch 52
The first contact 521 and third contact 523 be connected, connect amplification channel 54 at this time, amplification channel 54 puts RF signal amplitude
Big 2db improves the accuracy of power detection so that the amplitude of power detection is compensated.
After adding antenna 4, the output loading of directional coupler 2 is not at 50 ohm, the coupling of directional coupler 2 at this time
Degree can be more much smaller than the standard degree of coupling, such as 2db, it is meant that 2 coupled RF signal of directional coupler to power detection access
Signal magnitude become larger 2db.Then the first contact 511 and the 4th contact 514 conducting of first switch 51 at this time, second switch 52
The first contact 521 and the conducting of the 4th contact 524, connect attenuation path 55 at this time, attenuation path 55 subtracts RF signal amplitude
Small 2db improves the accuracy of power detection so that the amplitude of power detection is reduced.
It is of course also possible to there are the output loadings of directional coupler 2 50 ohm the case where, directional coupler 2 at this time
The degree of coupling is matched with the standard degree of coupling, then the first contact 511 and the second contact 512 conducting of first switch 51, second switch 52
The first contact 521 and the second contact 522 conducting, directly radiofrequency signal can be transmitted.
Optionally, the switch module 5 includes:
Third switch, transmission channel, amplification channel and attenuation path；
Wherein, the first contact of the third switch is connect with the directional coupler 2, the second touching of the third switch
Point is connect with the first end of the transmission channel, and the third contact of the third switch and the first end of the amplification channel connect
It connects, the 4th contact of the third switch is connect with the first end of the attenuation path；
The second end of the transmission channel, the second end of the amplification channel connect institute with the second end of the attenuation path
State the first end of envelope detection module 6.
In the embodiment, the principle of circuit is similar with the principle of circuit in Fig. 2, repeats no more to this present embodiment.
In the case where the degree of coupling of directional coupler 2 is bigger than the standard degree of coupling, the first contact of third switch is connected with third contact.
In the case where the degree of coupling of directional coupler 2 is smaller than the standard degree of coupling, the first contact of third switch is connected with the 4th contact.
Under the degree of coupling and the matched situation of the quasi- degree of coupling of directional coupler 2, the first contact of third switch is connected with the second contact.
Due in present embodiment, the second end of the transmission channel, the second end of the amplification channel and the decaying
The second end in channel connects the first end of the envelope detection module 6, to only need a switch that can carry out to circuit
Control, saves the cost of circuit, reduces the complexity of circuit, can also reduce the probability of circuit failure.
Optionally, the amplification channel 54 includes proportional power amplifier 541 in the same direction；The attenuation path 55 includes decaying
Network 551.
In the embodiment, in order to better understand above-mentioned setting, it can be provided refering to Fig. 3, Fig. 3 for the embodiment of the present invention
Switch module structural schematic diagram.As shown in figure 3, the amplification channel 54 includes proportional power amplifier 541 in the same direction, thus
Processing can be amplified to the power of radiofrequency signal；The attenuation path 55 includes attenuation network 551, so as to radio frequency
The power of signal carries out attenuation processing.
Referring again to Fig. 4, Fig. 4 is the structural schematic diagram of proportional power amplifier in the same direction provided in an embodiment of the present invention.Such as
Shown in Fig. 4, the amplification factor of the proportional power amplifier in the same direction is Au=(R2+R1)/R1, and R2 is variable resistance, works as R2=R1
When, amplification factor Au=2.
The signal processing circuit of the embodiment of the present invention, including RF transceiver 1, amplification module, directional coupler 2, radio frequency
Connector 3 and antenna 4, the signal processing circuit further include switch module 5 and envelope detection module 6, in which: the switching molding
The first end of block 5 is connect with the directional coupler 2, and the of the second end of the switch module 5 and the envelope detection module 6
One end connection, the switch module 5 are used to amplify the radiofrequency signal that the directional coupler 2 couples processing, at decaying
Reason or transmission process；The second end of the envelope detection module 6 is connect with the RF transceiver 1, the envelope detection mould
Block 6 is used to detect the coupled power of the radiofrequency signal by the switch module 5 processing.In this way, due to switch module 5 for pair
The radiofrequency signal that the directional coupler 2 couples amplifies processing, attenuation processing or transmission process, penetrates so as to improve
The accuracy of the power detection of frequency signal.
The embodiment of the present invention also provides a kind of terminal device, including above-mentioned signal processing circuit.
In the present embodiment, above-mentioned terminal device can be mobile phone, tablet computer (Tablet Personal Computer),
Laptop computer (Laptop Computer), personal digital assistant (personal digital assistant, abbreviation PDA),
Mobile Internet access device (Mobile Internet Device, MID) or wearable device (Wearable Device) etc..
It is the flow chart of signal processing method provided in an embodiment of the present invention referring to Fig. 5, Fig. 5, is set applied to above-mentioned terminal
It is standby, as shown in Figure 2, comprising the following steps:
Step 201, detection target component, the target component includes in the power consumption electric current and/or gain of power amplifier
At least one of.
In the present embodiment, above-mentioned target component can be the power consumption electric current of power amplifier, can be power amplifier
Gain, or also may include power consumption electric current and/or the gain of power amplifier.
Step 202, according to the target component, control the switch module and the radio frequency that the directional coupler couples believed
Number amplify processing, attenuation processing or transmission process.
It is above-mentioned according to the target component in the present embodiment, it controls the switch module and the directional coupler is coupled
Radiofrequency signal amplify processing, attenuation processing or transmission process can be there are many mode.For example, can be joined according to target
Number searches corresponding processing mode in preset processing table；Alternatively, being also possible to calculate target component, with determining pair
The processing mode answered.
In this way, controlling the radiofrequency signal that the switch module couples the directional coupler according to the target component
Amplify processing, attenuation processing or transmission process, so as to improve radiofrequency signal power detection accuracy.
Optionally, described according to the target component, it controls the switch module and the directional coupler coupling is penetrated
Frequency signal amplifies processing, attenuation processing or transmission process, comprising:
According to the target component, the degree of coupling of the directional coupler is determined；
In the case where the degree of coupling of the directional coupler is greater than the standard degree of coupling, the switch module is controlled to described
The radiofrequency signal of directional coupler coupling amplifies processing；
In the case where the degree of coupling of the directional coupler is less than the standard degree of coupling, the switch module pair is controlled
The radiofrequency signal of the directional coupler coupling carries out attenuation processing；
Under the degree of coupling and the matched situation of the standard degree of coupling of the directional coupler, the switch module is controlled
Transmission process is carried out to the radiofrequency signal of directional coupler coupling.
It is above-mentioned according to the target component in the embodiment, determine side there are many degrees of coupling of the directional coupler
Formula.It can be the degree of coupling for searching the directional coupler in preset mapping table according to target component；Or it can also
To be the degree of coupling for calculating the directional coupler according to target component.
In the case where the degree of coupling of the directional coupler is greater than the standard degree of coupling, it is meant that directional coupler coupling is penetrated
The signal magnitude of frequency signal to power detection access becomes smaller, and controls the radio frequency that the switch module couples the directional coupler
Signal carries out attenuation processing, compensates the amplitude of power detection, improves the accuracy of power detection.
In the case where the degree of coupling of the directional coupler is less than the standard degree of coupling, it is meant that directional coupler coupling
The signal magnitude for closing radiofrequency signal to power detection access becomes larger, and controls what the switch module coupled the directional coupler
Radiofrequency signal carries out attenuation processing, is reduced the amplitude of power detection, improves the accuracy of power detection.
Under the degree of coupling and the matched situation of the standard degree of coupling of the directional coupler, due to the directional couple
The degree of coupling of device is matched with the standard degree of coupling, is coupled to the directional coupler so as to controlling the switch module
Radiofrequency signal carries out transmission process, without amplifying processing or attenuation processing.
Optionally, described according to the target component, determine the degree of coupling of the directional coupler, comprising:
According to the target component, the phase of the radiofrequency signal of the RF transceiver transmitting is determined；
According to the phase of the radiofrequency signal, the degree of coupling of the directional coupler is determined.
It is above-mentioned according to the target component in the embodiment, determine the radiofrequency signal of the RF transceiver transmitting
Phase can be the radiofrequency signal for searching the RF transceiver transmitting in preset first relation table according to target component
Phase；Or it is also possible to calculate the phase of the radiofrequency signal of the RF transceiver transmitting according to target component.
In the embodiment, the above-mentioned phase according to the radiofrequency signal determines the degree of coupling of the directional coupler, can
To be the degree of coupling for searching the directional coupler in preset second relation table according to the phase of the radiofrequency signal；Or
It is also possible to the degree of coupling of the directional coupler according to the phase calculation of the radiofrequency signal.
It can be that power provided in an embodiment of the present invention is put refering to Fig. 6 and Fig. 7, Fig. 6 to better understand aforesaid way
The big power consumption electric current of device and the relation schematic diagram of phase, Fig. 7 are the gain and phase of power amplifier provided in an embodiment of the present invention
The relation schematic diagram of position.In this way, the load by the power amplifier of two different performances draws in-migration to determine that terminal device is current
The frequency range used is in which position (i.e. phase), when these positions are with 50 ohm, the difference of the degree of coupling of directional coupler
It is different.
Fig. 6 expression be current characteristics, due to different impedance position radio-frequency power amplifiers power consumption size of current not
Equally, mobile phone is according to the power consumption size of current of current radio frequency power amplifier it was determined that being in plus current demand signal after antenna
Which position is 1,2,3 or 4 position.
Further according to the gain of Fig. 7 current power amplifier, due to the gain of different impedance position radio-frequency power amplifiers
It is in different size, it may further determine that current impedance position, the determination mobile phone complexity day that two basic change can be more accurate
Under thread environment, current phone uses frequency point impedance position.
Assuming that the degree of coupling with the directional coupler of 50 ohmage positions compares, the degree of coupling of directional coupler is in impedance
The position degree of coupling of position 2 and 4 has become larger 2db, and impedance position 3 reduces 2db, the ohmage position of impedance position 1 and 50
The degree of coupling difference of directional coupler is little.It specifically differs, can be obtained by actual measurement, and this difference is write into terminal
In equipment.
The degree of coupling of directional coupler can be surveyed by vector network analyzer and be obtained, the different impedance position Europe Xia Yu50
When nurse, the difference of the degree of coupling can also be surveyed by vector network analyzer to be obtained, this parameter is cured in terminal device.
When conducting calibration (stand impedance is close to 50 ohm), the degree of coupling of directional coupler is 24.7, obtains radio frequency receipts
Hair device transmission power and the corresponding relationship of power detection value are as follows:
In above table, be all directional coupler output port impedance be 50 ohm, the degree of coupling be 24.7 in the case where
When parameter, i.e. power are 23, power detection value is 23235, and similarly, when power is 22, power detection value is 19442.
In addition after antenna, gain and electric current of the terminal device by power amplifier, the current phase of real-time detection, i.e.,
Impedance position.It may be phase 1,2,3 or 4, it is assumed that fixed when being compared with the degree of coupling of the directional coupler of 50 ohmage positions
It is 24.7 to the degree of coupling of coupler, the position degree of coupling in impedance position 2 and 4 has become larger 2db, and impedance position 3 reduces
The degree of coupling of directional coupler of 2db, the ohmage position of impedance position 1 and 50 are suitable.
Terminal device carries out the switch module on power detection access different according to the present impedance position detected
Control.Such as: when present impedance position is 1, the directional coupler of the degree of coupling of directional coupler and 50 ohmage positions at this time
The degree of coupling it is suitable, control the radiofrequency signal that the switch module couples the directional coupler and carry out transmission process；Currently
When impedance position is 2, the degree of coupling of directional coupler is bigger than the degree of coupling of the directional coupler of 50 ohmage positions at this time
2db controls the radiofrequency signal that the switch module couples the directional coupler and amplifies processing；Present impedance position is
When 3, the degree of coupling of directional coupler is 2db smaller than the degree of coupling of the directional coupler of 50 ohmage positions at this time, described in control
Switch module carries out attenuation processing to the radiofrequency signal that the directional coupler couples.To guarantee the power inspection of terminal device
It is less big to survey the difference compared with the degree of coupling of the directional coupler of 50 ohmage positions.
Optionally, the target component includes power consumption electric current and/or the gain of the power amplifier.
In the embodiment, the target component includes power consumption electric current and/or the gain of the power amplifier, thus two
A combination can be more accurate determination terminal device under complex antenna environment, present terminal equipment use frequency point impedance position
Set (i.e. phase).
A kind of signal processing method of the embodiment of the present invention is applied to above-mentioned terminal device, detects target component, the mesh
Mark parameter includes at least one in the power consumption electric current and/or gain of power amplifier；According to the target component, described in control
The radiofrequency signal that switch module couples the directional coupler amplifies processing, attenuation processing or transmission process.In this way,
According to the target component, control the radiofrequency signal that the switch module couples the directional coupler amplify processing,
Attenuation processing or transmission process, so as to improve radiofrequency signal power detection accuracy.
Referring to Fig. 8, a kind of hardware structural diagram of Fig. 8 terminal device of each embodiment to realize the present invention, the end
End equipment 800 includes but is not limited to: radio frequency unit 801, audio output unit 803, input unit 804, passes network module 802
Sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, processor 810 and power supply
811 equal components.It will be understood by those skilled in the art that terminal device structure shown in Fig. 8 is not constituted to terminal device
It limits, terminal device may include perhaps combining certain components or different component cloth than illustrating more or fewer components
It sets.In embodiments of the present invention, terminal device includes but is not limited to mobile phone, tablet computer, laptop, palm PC, vehicle
Mounted terminal, wearable device and pedometer etc..
Wherein, processor 810, for detecting target component, the target component includes the power consumption electric current of power amplifier
At least one of and/or in gain；According to the target component, control what the switch module coupled the directional coupler
Radiofrequency signal amplifies processing, attenuation processing or transmission process.Due to controlling the switch module to the directional couple
The radiofrequency signal of device coupling amplifies processing, attenuation processing or transmission process, so as to improve the power of radiofrequency signal
The accuracy of detection.
Optionally, processor 810 are also used to determine the degree of coupling of the directional coupler according to the target component；?
In the case that the degree of coupling of the directional coupler is greater than the standard degree of coupling, the switch module is controlled to the directional coupler
The radiofrequency signal of coupling amplifies processing；The case where the degree of coupling of the directional coupler is less than the standard degree of coupling
Under, it controls the switch module and attenuation processing is carried out to the radiofrequency signal that the directional coupler couples；In the directional couple
Under the degree of coupling of device and the matched situation of the standard degree of coupling, control what the switch module coupled the directional coupler
Radiofrequency signal carries out transmission process.
Optionally, processor 810 are also used to determine the radio frequency of the RF transceiver transmitting according to the target component
The phase of signal；According to the phase of the radiofrequency signal, the degree of coupling of the directional coupler is determined.
Optionally, the target component includes power consumption electric current and/or the gain of the power amplifier.
It should be understood that the embodiment of the present invention in, radio frequency unit 801 can be used for receiving and sending messages or communication process in, signal
Send and receive, specifically, by from base station downlink data receive after, to processor 810 handle；In addition, by uplink
Data are sent to base station.In general, radio frequency unit 801 includes but is not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 801 can also by wireless communication system and network and other set
Standby communication.
Terminal device provides wireless broadband internet by network module 802 for user and accesses, and such as user is helped to receive
It sends e-mails, browse webpage and access streaming video etc..
Audio output unit 803 can be received by radio frequency unit 801 or network module 802 or in memory 809
The audio data of storage is converted into audio signal and exports to be sound.Moreover, audio output unit 803 can also provide and end
The relevant audio output of specific function that end equipment 800 executes is (for example, call signal receives sound, message sink sound etc.
Deng).Audio output unit 803 includes loudspeaker, buzzer and receiver etc..
Input unit 804 is for receiving audio or video signal.Input unit 804 may include graphics processor
(Graphics Processing Unit, GPU) 8041 and microphone 8042, graphics processor 8041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 806.Through graphics processor 8041, treated that picture frame can be deposited
Storage is sent in memory 809 (or other storage mediums) or via radio frequency unit 801 or network module 802.Mike
Wind 8042 can receive sound, and can be audio data by such acoustic processing.Treated audio data can be
The format output that mobile communication base station can be sent to via radio frequency unit 801 is converted in the case where telephone calling model.
Terminal device 800 further includes at least one sensor 805, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 8061, and proximity sensor can close when terminal device 800 is moved in one's ear
Display panel 8061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify terminal device posture (ratio
Such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap)；It passes
Sensor 805 can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, wet
Meter, thermometer, infrared sensor etc. are spent, details are not described herein.
Display unit 806 is for showing information input by user or being supplied to the information of user.Display unit 806 can wrap
Display panel 8061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 8061.
User input unit 807 can be used for receiving the number or character information of input, and generate the use with terminal device
Family setting and the related key signals input of function control.Specifically, user input unit 807 include touch panel 8071 and
Other input equipments 8072.Touch panel 8071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 8071 or in touch panel 8071
Neighbouring operation).Touch panel 8071 may include both touch detecting apparatus and touch controller.Wherein, touch detection
Device detects the touch orientation of user, and detects touch operation bring signal, transmits a signal to touch controller；Touch control
Device processed receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 810, receiving area
It manages the order that device 810 is sent and is executed.Furthermore, it is possible to more using resistance-type, condenser type, infrared ray and surface acoustic wave etc.
Seed type realizes touch panel 8071.In addition to touch panel 8071, user input unit 807 can also include other input equipments
8072.Specifically, other input equipments 8072 can include but is not limited to physical keyboard, function key (such as volume control button,
Switch key etc.), trace ball, mouse, operating stick, details are not described herein.
Further, touch panel 8071 can be covered on display panel 8061, when touch panel 8071 is detected at it
On or near touch operation after, send processor 810 to determine the type of touch event, be followed by subsequent processing device 810 according to touching
The type for touching event provides corresponding visual output on display panel 8061.Although in fig. 8, touch panel 8071 and display
Panel 8061 is the function that outputs and inputs of realizing terminal device as two independent components, but in some embodiments
In, can be integrated by touch panel 8071 and display panel 8061 and realize the function that outputs and inputs of terminal device, it is specific this
Place is without limitation.
Interface unit 808 is the interface that external device (ED) is connect with terminal device 800.For example, external device (ED) may include having
Line or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, storage card end
Mouth, port, the port audio input/output (I/O), video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 808 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and
By one or more elements that the input received is transferred in terminal device 800 or can be used in 800 He of terminal device
Data are transmitted between external device (ED).
Memory 809 can be used for storing software program and various data.Memory 809 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 809 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 810 is the control centre of terminal device, utilizes each of various interfaces and the entire terminal device of connection
A part by running or execute the software program and/or module that are stored in memory 809, and calls and is stored in storage
Data in device 809 execute the various functions and processing data of terminal device, to carry out integral monitoring to terminal device.Place
Managing device 810 may include one or more processing units；Preferably, processor 810 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 810.
Terminal device 800 can also include the power supply 811 (such as battery) powered to all parts, it is preferred that power supply 811
Can be logically contiguous by power-supply management system and processor 810, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, terminal device 800 includes some unshowned functional modules, details are not described herein.
Preferably, the embodiment of the present invention also provides a kind of terminal device, including processor 810, and memory 809 is stored in
On memory 809 and the computer program that can run on the processor 810, the computer program are executed by processor 810
Each process of the above-mentioned signal processing method embodiment of Shi Shixian, and identical technical effect can be reached, to avoid repeating, here
It repeats no more.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize each process of above-mentioned signal processing method embodiment, and energy when being executed by processor
Reach identical technical effect, to avoid repeating, which is not described herein again.Wherein, the computer readable storage medium, such as only
Read memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation
RAM), magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (12)
1. a kind of signal processing circuit, including RF transceiver, amplification module, directional coupler, radio frequency connector and antenna,
It is characterized in that, the signal processing circuit further includes switch module and envelope detection module, in which:
The first end of the switch module is connect with the directional coupler, and the second end of the switch module and the envelope are examined
The first end of wave module connects, and the radiofrequency signal that the switch module is used to couple the directional coupler amplifies place
Reason, attenuation processing or transmission process；
The second end of the envelope detection module is connect with the RF transceiver, and the envelope detection module is passed through for detecting
The coupled power of the radiofrequency signal of the switch module processing.
2. signal processing circuit according to claim 1, which is characterized in that the switch module is used in the orientation coupling
In the case that the degree of coupling of clutch is greater than the standard degree of coupling, place is amplified to the radiofrequency signal of directional coupler coupling
Reason；
Alternatively, the switch module is used in the case where the degree of coupling of the directional coupler is less than the standard degree of coupling,
Attenuation processing is carried out to the radiofrequency signal of directional coupler coupling；
Alternatively, the switch module is used for the case where the degree of coupling of the directional coupler is matched with the standard degree of coupling
Under, transmission process is carried out to the radiofrequency signal of directional coupler coupling.
3. signal processing circuit according to claim 2, which is characterized in that the switch module includes:
First switch, second switch, transmission channel, amplification channel and attenuation path；
Wherein, the first contact of the first switch is connect with the directional coupler, the second contact of the first switch with
The first end of the transmission channel connects, and the third contact of the first switch is connect with the first end of the amplification channel, institute
The 4th contact for stating first switch is connect with the first end of the attenuation path；
First contact of the second switch is connect with the first end of the envelope detection module, the second touching of the second switch
Point is connect with the second end of the transmission channel, and the third contact of the second switch and the second end of the amplification channel connect
It connects, the 4th contact of the second switch is connect with the second end of the attenuation path.
4. signal processing circuit according to claim 2, which is characterized in that the switch module includes:
Third switch, transmission channel, amplification channel and attenuation path；
Wherein, the first contact of the third switch connect with the directional coupler, the second contact that the third switchs and
The first end of the transmission channel connects, and the third contact of the third switch is connect with the first end of the amplification channel, institute
The 4th contact for stating third switch is connect with the first end of the attenuation path；
The second end of the transmission channel, the second end of the amplification channel connect the packet with the second end of the attenuation path
The first end of network detection module.
5. signal processing circuit according to claim 3 or 4, which is characterized in that the amplification channel includes ratio in the same direction
Power amplifier；The attenuation path includes attenuation network.
6. a kind of terminal device, which is characterized in that including signal processing circuit described in any one of claims 1 to 5.
7. a kind of signal processing method is applied to terminal device as claimed in claim 6, which is characterized in that the described method includes:
Target component is detected, the target component includes at least one in the power consumption electric current and/or gain of power amplifier；
According to the target component, controls the radiofrequency signal that the switch module couples the directional coupler and amplify place
Reason, attenuation processing or transmission process.
8. signal processing method according to claim 7, which is characterized in that it is described according to the target component, control institute
It states the radiofrequency signal that switch module couples the directional coupler and amplifies processing, attenuation processing or transmission process, wrap
It includes:
According to the target component, the degree of coupling of the directional coupler is determined；
In the case where the degree of coupling of the directional coupler is greater than the standard degree of coupling, the switch module is controlled to the orientation
The radiofrequency signal of coupler coupling amplifies processing；
In the case where the degree of coupling of the directional coupler is less than the standard degree of coupling, the switch module is controlled to described
The radiofrequency signal of directional coupler coupling carries out attenuation processing；
Under the degree of coupling and the matched situation of the standard degree of coupling of the directional coupler, the switch module is controlled to institute
The radiofrequency signal for stating directional coupler coupling carries out transmission process.
9. signal processing method according to claim 8, which is characterized in that it is described according to the target component, determine institute
State the degree of coupling of directional coupler, comprising:
According to the target component, the phase of the radiofrequency signal of the RF transceiver transmitting is determined；
According to the phase of the radiofrequency signal, the degree of coupling of the directional coupler is determined.
10. signal processing method according to any one of claims 7 to 9, which is characterized in that the target component includes
The power consumption electric current of the power amplifier and/or gain.
11. a kind of terminal device, which is characterized in that including processor, memory and be stored on the memory and can be in institute
State the computer program run on processor, when the computer program is executed by the processor realize as claim 7 to
The step of signal processing method described in any one of 10.
12. a kind of computer readable storage medium, which is characterized in that store computer journey on the computer readable storage medium
Sequence realizes the signal processing method as described in any one of claim 7 to 10 when the computer program is executed by processor
The step of.
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