CN106506012A - Digital variable gain amplifier calibration steps and device - Google Patents
Digital variable gain amplifier calibration steps and device Download PDFInfo
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- CN106506012A CN106506012A CN201610851300.XA CN201610851300A CN106506012A CN 106506012 A CN106506012 A CN 106506012A CN 201610851300 A CN201610851300 A CN 201610851300A CN 106506012 A CN106506012 A CN 106506012A
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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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
-
- 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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
Abstract
The invention discloses a kind of digital variable gain amplifier calibration steps, including：Collection radio frequency reception link is within the preset time cycle, the deviation of DVGA OFFSET of the sample channel of each frequency range under each gain stage, and deviation of the sample channel under each gain stage using each frequency range calculates the deviation variable of each frequency range, and respectively the channel in each frequency range is compensated according to the deviation variable of each frequency range.The invention also discloses a kind of digital variable gain amplifier calibrating installation, by gathering the deviation of DVGA OFFSET of the sample channel of radio frequency reception link each frequency range within the preset time cycle under each gain stage, the deviation variable of each frequency range can be calculated, so that the deviation variable based on each frequency range is compensated to the deviation of the DVGA OFFSET of the channel in each frequency range, to realize that DVGA is calibrated, guarantee to receive signal stabilization, it is to avoid the problems such as suspension call drop occur.
Description
Technical field
A kind of the present invention relates to technical field of mobile terminals, more particularly to digital variable gain amplifier (Digital
Variable Gain Amplifier, DVGA) calibration steps and device.
Background technology
Mobile phone is required for using specific instrument before dispatching from the factory to the radio-frequency transmissions link and radio frequency reception link of mobile phone
Index is calibrated, and so as to upon completion of the calibration, the index of the radio-frequency transmissions link and radio frequency reception link of mobile phone meets preset
Standard, normally can use.At present, it is mainly the school of mobile phone reception gain to the calibration of the radio frequency reception link of mobile phone
Standard, the DVGA calibrations and low-noise amplifier (Low Noise Amplifier, LAN) school including the overall gain level of whole link
Accurate.For high-pass platform, when DVGA calibrations are carried out to mobile phone, it is to choose highest-gain level LAN0 to be used as whole link
The gain stage of DVGA calibrations, to obtain unified DVGA gain offsets values (OFFSET), and in real work scene, mobile phone
The gain offsets value that radio frequency reception link is compensated under different gains level is all based on above-mentioned unified DVGA OFFSET and obtains
's.
However, mobile phone is in actual use, due to the increasing that the radio frequency reception link of mobile phone is compensated under different gains level
Beneficial deviant is all based on what unified DVGA OFFSET were obtained, and not carries out DVGA calibrations to each gain stage and obtain,
Therefore, under each gain stage for obtaining by the way, the gain practically necessary with each gain stage of the gain offsets value of compensation is inclined
There is error, and the use with mobile phone between shifting value, the error gradually can increase.Receiving sensitivity is close in signal intensity
When (receiving sensitivity is exactly the minimum reception power that radio frequency reception link can be correctly received useful signal), due to depositing
In above-mentioned error, the jitter of mobile phone reception is will result in, so as to produce the phenomenons such as suspension call drop.
Content of the invention
Present invention is primarily targeted at after providing a kind of digital variable gain amplifier calibration steps and adornment, it is intended to solve
Exist between the gain offsets value that the gain offsets value and each gain stage for certainly compensating under each gain stage in prior art is actually needed
Error, will cause signal transmission error occur, bring mobile phone receive jitter, produce suspension call drop the problems such as.
For achieving the above object, first aspect present invention provides a kind of digital variable gain amplifier calibration steps, the party
Method includes：
Collection radio frequency reception link within the preset time cycle, the numeral of the sample channel of each frequency range under each gain stage
The deviation of variable-gain amplifier gain deviant DVGA OFFSET；
Each frequency is calculated using the deviation of the DVGA OFFSET of the sample channel under each gain stage of each frequency range
The deviation variable of section；
Deviation variable according to each frequency range is compensated to the channel in each frequency range respectively, to realize DVGA
Calibration.
For achieving the above object, second aspect present invention provides a kind of digital variable gain amplifier calibrating installation, the dress
Put including：
Acquisition module, for gathering radio frequency reception link within the preset time cycle, the sample channel of each frequency range is each
The deviation of the digital variable gain amplifier gain offsets value DVGA OFFSET under gain stage；
Variable computing module, for DVGA OFFSET of the sample channel using each frequency range under each gain stage
Deviation calculates the deviation variable of each frequency range；
Compensating module, for mending to the channel in each frequency range according to the deviation variable of each frequency range respectively
Repay, to realize that DVGA is calibrated.
The present invention provides a kind of digital variable gain amplifier calibration steps, and the method includes：Collection radio frequency reception link
Within the preset time cycle, the deviation of the DVGA OFFSET of the sample channel of each frequency range under each gain stage, and using each
Deviation of the sample channel of frequency range under each gain stage calculates the deviation variable of each frequency range, and the deviation according to each frequency range
Variable is compensated to the channel in each frequency range respectively, to realize that DVGA is calibrated.By gathering radio frequency reception link preset
The mode of the deviation of DVGA OFFSET of the sample channel of each frequency range under each gain stage in time cycle, can obtain each
The deviation variable of frequency range, so that the deviation variable based on each frequency range is to the DVGA OFFSET's of the channel in each frequency range
Deviation is compensated, and to realize that DVGA is calibrated, makes up the error of each gain stage, to guarantee the signal of radio frequency reception link reception
Stable, it is to avoid the problems such as suspension call drop occur.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those skilled in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structured flowchart of mobile terminal；
Schematic flow sheets of the Fig. 2 for digital variable gain amplifier calibration steps in first embodiment of the invention；
Fig. 3 is the schematic flow sheet of the refinement step of step 202 in first embodiment shown in Fig. 2 of the present invention；
Fig. 4 is the schematic flow sheet of the refinement step of step 302 shown in Fig. 3 of the present invention；
Fig. 5 is the schematic flow sheet of the refinement step of step 203 in first embodiment shown in Fig. 2 of the present invention；
Fig. 6 is the schematic diagram of the functional module of digital variable gain amplifier calibrating installation in second embodiment of the invention；
Fig. 7 is the schematic diagram of the refinement functional module of variable computing module 602 in second embodiment shown in Fig. 6 of the present invention；
Fig. 8 is the schematic diagram of the refinement functional module of the second computing module 702 shown in Fig. 7 of the present invention；
Fig. 9 is the schematic diagram of the refinement functional module of compensating module 603 in second embodiment shown in Fig. 6 of the present invention.
Specific embodiment
For enabling the goal of the invention of the present invention, feature, advantage more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, to the embodiment of the present invention in technical scheme be clearly and completely described, it is clear that described reality
It is only a part of embodiment of the invention to apply example, and not all embodiments.Embodiment in based on the present invention, people in the art
The every other embodiment obtained under the premise of creative work is not made by member, belongs to the scope of protection of the invention.
Fig. 1 shows a kind of structured flowchart of mobile terminal.Digital variable gain amplifier provided in an embodiment of the present invention
Calibration steps is can be applicable in mobile terminal 10 as shown in Figure 1, and mobile terminal 10 can be, but not limited to include：Battery need to be relied on
Maintain normal operation and the smart mobile phone of support network and download function, notebook, panel computer, wearing smart machine etc..
As shown in figure 1, mobile terminal 10 includes memorizer 101, storage control 102, one or more (only illustrate in figure
One) processor 103, Peripheral Interface 104, radio-frequency module 105, key-press module 106, audio-frequency module 107 and Touch Screen
108.These components pass through one or more communication bus/holding wire, 109 mutual communication.
It is appreciated that the structure shown in Fig. 1 is only to illustrate, which does not cause to limit to the structure of mobile terminal.Mobile whole
End 10 may also include the component more or more less than shown in Fig. 1, or with the configuration different from shown in Fig. 1.Shown in Fig. 1
Each component can adopt hardware, software or its combination to realize.
Memorizer 101 can be used to store software program and module, and the such as digitally controlled variable gain in the embodiment of the present invention is put
Big device calibration steps and the corresponding programmed instruction/module of device, processor 103 are stored in soft in memorizer 101 by operation
Part program and module, so as to execute various function application and data processing, that is, realize that above-mentioned digitally controlled variable gain amplifies
Device calibration steps.
Memorizer 101 may include high speed random access memory, may also include nonvolatile memory, such as one or more magnetic
Property storage device, flash memory or other non-volatile solid state memories.In some instances, memorizer 101 can be further included
Relative to the remotely located memorizer of processor 103, these remote memories can pass through network connection to mobile terminal 10.On
The example for stating network includes but is not limited to the Internet, intranet, LAN, mobile radio communication and combinations thereof.Processor 103
And other possible components can be carried out under the control of storage control 102 to the access of memorizer 101.
Peripheral Interface 104 is by various input/output devices coupled to CPU and memorizer 101.The operation of processor 103 is deposited
Various softwares in reservoir 101, instruction are executing the various functions of mobile terminal 10 and carry out data processing.
In certain embodiments, Peripheral Interface 104, processor 103 and storage control 102 can be in one single chips
Realize.In some other example, they can be realized by independent chip respectively.
Radio-frequency module 105 be used for receive and send electromagnetic wave, realize the mutual conversion of electromagnetic wave and the signal of telecommunication, so as to
Communication network or other equipment are communicated.Radio-frequency module 105 may include the various existing electricity for executing these functions
Circuit component, for example, antenna, RF transceiver, digital signal processor, encryption/deciphering chip, subscriber identity module (SIM) card,
Memorizer etc..Radio-frequency module 105 can with various networks for example the Internet, intranet, preset type wireless network carry out
Communication or the wireless network by preset type are communicated with other equipment.The wireless network of above-mentioned preset type can be wrapped
Include cellular telephone networks, WLAN or Metropolitan Area Network (MAN).The wireless network of above-mentioned preset type can use various communications
Standard, agreement and technology, including but not limited to global system for mobile communications (Global System for Mobile
Communication, GSM), enhancement mode mobile communication technology (Enhanced Data GSM Environment, EDGE) is wide
Band CDMA (Wideband Code Division Multiple Access, W-CDMA), CDMA
(Code Division Access, CDMA), tdma (Time Division Multiple Access, TDMA),
Bluetooth, adopting wireless fidelity technology (Wireless-Fidelity, WiFi) is (such as IEEE-USA's standard IEEE
802.11a, IEEE 802.11b, IEEE802.11g and/or IEEE 802.11n), the networking telephone (Voice over
Internet Protocal, VoIP), worldwide interoperability for microwave accesses (Worldwide Interoperability for
Microwave Access, Wi-Max), other are used for the agreement of mail, instant messaging and short message, and any other is suitable
Communications protocol.
Key-press module 106 provides the interface that is input into mobile terminal of user, user can by press different by
Key is so that mobile terminal 10 executes different functions.
Audio-frequency module 107 provides a user with audio interface, and which may include one or more mikes, one or more raises
Sound device and voicefrequency circuit.Voicefrequency circuit receives voice data from Peripheral Interface 104, and voice data is converted to electrical information,
Electrical information is transmitted to speaker.Electrical information is converted to speaker the sound wave that human ear can be heard.Voicefrequency circuit is also from mike
Place receives electrical information, converts electrical signals to voice data, and by data transmission in network telephony to Peripheral Interface 104 entering traveling one
The process of step.Voice data can be obtained from memorizer 101 or by radio-frequency module 105.Additionally, voice data can also
It is transmitted in storing to memorizer 101 or by radio-frequency module 105.In some instances, audio-frequency module 107 may also include
Hole broadcast by one earphone, for providing audio interface to earphone or other equipment.
Touch Screen 108 provides an output and inputting interface between mobile terminal and user simultaneously.Specifically, touch-control
Screen 108 displays to the user that video frequency output, and the content of these video frequency outputs may include word, figure, video and its any group
Close.Some output results correspond to some user interface objects.The input of the also receive user of Touch Screen 108, such as user
Click, the gesture operation such as slip, so that user interface object is responded to the input of these users.Detection user input
Technology can be based on resistance-type, condenser type or other arbitrarily possible touch control detection technology.108 display unit of Touch Screen
Instantiation include but is not limited to liquid crystal display or light emitting polymer displays.
Digital variable gain amplifier calibration steps in the embodiment of the present invention is described based on above-mentioned mobile terminal.
In due to prior art, the gain offsets that the gain offsets value of compensation is actually needed with each gain stage under each gain stage
There is error between value, signal transmission will be caused error occur, the jitter for bringing mobile phone to receive produces suspension call drop etc.
Problem.
In order to solve the above problems, the present invention proposes a kind of digital variable gain amplifier calibration steps, is penetrated by collection
The deviation of DVGA OFFSET of the sample channel of frequency receives link each frequency range within the preset time cycle under each gain stage
Mode, the deviation variable of each frequency range can be calculated, so that deviation variable based on each frequency range is to the letter in each frequency range
The deviation of the DVGA OFFSET in road is compensated, and to realize that DVGA is calibrated, makes up the error of each gain stage, to guarantee radio frequency
The signal stabilization that receives link is received, it is to avoid the problems such as suspension call drop occur.
Fig. 2 is referred to, is the schematic flow sheet of digital variable gain amplifier calibration steps in first embodiment of the invention,
The method includes：
Within the preset time cycle, the sample channel of each frequency range is in each gain stage for step 201, collection radio frequency reception link
Under DVGA OFFSET deviation；
In embodiments of the present invention, digital variable gain amplifier calibration steps is by digital variable gain amplifier calibration cartridge
Put (hereinafter referred to as：Calibrating installation) execute, and the calibrating installation is the part in mobile terminal shown in Fig. 1.
In embodiments of the present invention, include radio frequency link in mobile terminal, specifically connect comprising radio frequency transmission link and radio frequency
Link is received, the radio frequency reception link is used for the signal for receiving outside transmission.Generally the radio frequency reception link includes antenna, LAN, mixes
Frequency device, DVGA, demodulator, and the path of radio frequency reception link received signals is：Antenna-LAN- frequency mixer-DVGA- demodulators,
Wherein, demodulator can only receive the signal of certain power and could reconcile, that is, the power for reaching demodulator must be fixed.This
Calibration steps in bright embodiment is by way of mobile terminal is calibrated to DVGA in use to cause radio frequency reception
In link, demodulator receives the signal of certain power, so that the radio frequency reception link of mobile terminal normally can work.
In embodiments of the present invention, mobile terminal is in the case of normal cluster (i.e. registered mobile network), calibration cartridge
Put and DVGA will be calibrated, with ensure mobile terminal radio frequency reception link can normal work, wherein, calibrating installation be with
One preset time cycle was calibrated for the cycle, and for example, the time cycle can be a hour or 2 hours
Deng, and it is understood that in actual applications, the preset time cycle can be configured according to specific circumstances, this
Place does not limit.
In embodiments of the present invention, radio-frequency transmissions link can use multiple frequency ranges, and each frequency range has multiple letters
Road, calibrates consumed resource to reduce, will determine sample channel, example according to presetting rule from all channels of frequency range
Such as, if a frequency range has 20 channels, using the 1st, 5,10,15,20 channels as sample channel.
Wherein, calibrating installation will gather radio frequency reception link within the preset time cycle, and the sample channel of each frequency range exists
The deviation of the DVGA OFFSET under each gain stage.
For the technical scheme being better understood from the embodiment of the present invention, table 1 is referred to, each sampling of the table 1 for frequency range A
The deviation of DVGA OFFSET of the channel under different gains level.
The deviation of DVGA OFFST of each sample channel of 1 frequency range A of table under each gain stage
In embodiments of the present invention, the gain stage of radio frequency reception link is divided into LAN0 to LAN4 totally 5 kinds of different ranks, and
The gain stage highest of LAN0.
Wherein, deviation of the channel under gain stage refers to DVGA OFFSET that this collects relative to pre-setting
Deviation between standard deviation value of the channel under the gain stage.So that sample channel in frequency range A 2 is in LAN2 as an example, elder generation is needed
DVGA OFFSET of the sample channel 2 under LAN2 is gathered, and calculates the DVGA OFFSET and existed with the sample channel 2 for pre-setting
The difference between standard deviation value under LAN2, the difference are deviation Δ G22.
Step 202, the deviation calculating for utilizing DVGA OFFSET of the sample channel of each frequency range under each gain stage
The deviation variable of each frequency range；
Step 203, respectively the channel in each frequency range is compensated according to the deviation variable of each frequency range, with
Realize that DVGA is calibrated.
In embodiments of the present invention, calibrating installation is obtaining DVGA of the sample channel of each frequency range under each gain stage
After the deviation of OFFSTE, by the deviation of DVGA OFFSET of the sample channel using each frequency range under each gain stage
The deviation variable of each frequency range is calculated, and respectively the channel in each frequency range is mended according to the deviation variable of each frequency range
Repay, to realize that DVGA is calibrated.
In embodiments of the present invention, calibrating installation collection radio frequency reception link is within the preset time cycle, each frequency range
The deviation of DVGA OFFSET of the sample channel under each gain stage, and using each frequency range sample channel under each gain stage
Deviation calculate the deviation variable of each frequency range, and respectively the channel in each frequency range is entered according to the deviation variable of each frequency range
Row compensation, to realize that DVGA is calibrated.By gathering the sample channel of radio frequency reception link each frequency range within the preset time cycle
The mode of the deviation of the DVGA OFFSET under each gain stage, can calculate the deviation variable of each frequency range, should to be based on
The deviation variable of each frequency range is compensated to the deviation of the DVGA OFFSET of the channel in each frequency range, to realize DVGA schools
Standard, makes up the error of each gain stage, to guarantee the signal stabilization of radio frequency reception link reception, it is to avoid suspension call drop etc. occur and ask
Topic.
Fig. 3 is referred to, is the schematic flow sheet of the refinement step of step 202 in first embodiment shown in Fig. 2, the step
202 refinement step includes：
Step 301, using each frequency range deviation of the sample channel under each gain stage, calculate each frequency range and exist
Corresponding deviation average is distinguished under each gain stage；
Step 302, corresponding deviation average is distinguished under each gain stage according to each frequency range, calculate each frequency range
Deviation variable.
In embodiments of the present invention, calibrating installation is obtaining DVGA of the sample channel of each frequency range under each gain stage
After the deviation of OFFSET, by deviation of the sample channel using each frequency range under each gain stage, each frequency range is calculated each
Corresponding deviation average is distinguished under gain stage.
As a example by table 1 in based on first embodiment shown in 2, need to calculate frequency range A at each gain stage (i.e. LAN0 to LAN4)
Under deviation average, specifically, for deviation average of frequency range A under LAN0, can be calculated according to equation below：
Δ G0=(Δ G01+ Δ G02+ ...+Δ G0N)/N
Wherein, Δ G0 represents that deviation average of frequency range A under LAN0, Δ G01 to Δ G0N represent that frequency range A is each under LAN0
The deviation of the DVGA OFFSET of sample channel, N represent the total number of sample channel.
It is understood that based on above-mentioned formula, deviation average of frequency range A under other gain stages can also be obtained, can
Table 2 is obtained, table 2 is as follows.
Table 2
In embodiments of the present invention, calibrating installation obtain each frequency range under each gain stage distinguish corresponding deviation average it
Afterwards, the deviation variable of each frequency range of corresponding deviation mean value computation can be distinguished according to each frequency range under each gain stage so that energy
Enough the channel of each frequency range is compensated based on the deviation variable of each frequency range, to realize that DVGA is calibrated, make up each gain stage
Error, to guarantee the signal stabilization of radio frequency reception link reception, it is to avoid the problems such as suspension call drop occur.
Fig. 4 is referred to, is the schematic flow sheet of the refinement step of step 302 shown in Fig. 3 of the present invention, the step 302 includes：
Step 401, using each frequency range, under each gain stage, corresponding deviation average carries out being averaging computing respectively, obtains
Deviation average to each frequency range；
The standard deviation value of step 402, the deviation average for determining each frequency range respectively and preset described each frequency range it
Between difference, using the difference for obtaining as each frequency range deviation variable.
In embodiments of the present invention, calibrating installation obtain each frequency range under each gain stage distinguish corresponding deviation average it
Afterwards, will using each frequency range, under each gain stage, corresponding deviation average carries out being averaging computing respectively, obtain the deviation of each frequency range
Average, for example, if exist 5 frequency ranges, by be utilized respectively 5 frequency ranges under each gain stage distinguish corresponding deviation average
Carry out being averaging computing, obtain the deviation average of 5 frequency ranges.
By taking the table 2 shown in Fig. 3 as an example, when the deviation average of frequency range A is calculated, need frequency range A in gain stage
The deviation average of LAN0 to LAN4 is averaging, specifically：
DVGA OFFSET_A=(Δ G0+ Δ G1+ Δ G2+ Δ G3+ Δ G4)/4
It is understood that based on aforesaid way, the deviation average of each frequency range can be obtained.
In embodiments of the present invention, calibrating installation will determine each frequency range after the deviation average for obtaining each frequency range respectively
Deviation average and the standard deviation value of preset each frequency range between difference, using the difference for obtaining as each frequency range deviation
Variable, for example, for frequency range A, needs the standard deviation value that the deviation average of frequency range A is deducted preset frequency range A, and incites somebody to action
Deviation variable of the difference for arriving as frequency range A, specifically, it is possible to use below equation：
Δ G (A)=DVGA OFFSET_A-DVGA OFFSET_A0
Wherein, Δ G (A) represents that the deviation variable of frequency range A, DVGA OFFSET_A represent the deviation average of frequency range A,
DVGA OFFSET_A0 represent the standard deviation value of frequency range A.
It is understood that the deviation variable of each frequency range by the way, can be calculated.
In embodiments of the present invention, calibrating installation obtain each frequency range under each gain stage distinguish corresponding deviation average it
Afterwards, will using each frequency range, under each gain stage, corresponding deviation average carries out being averaging computing respectively, obtain the deviation of each frequency range
Average, and determine respectively each frequency range deviation average and preset each frequency range standard deviation value between difference, by obtained
Deviation variable of the difference as each frequency range, enabling the channel of each frequency range is mended based on the deviation variable of each frequency range
Repay, to realize that DVGA is calibrated, make up the error of each gain stage, to guarantee the signal stabilization of radio frequency reception link reception, it is to avoid go out
The problems such as existing suspension call drop.
Fig. 5 is referred to, is the schematic flow sheet of the refinement step of step 203 in first embodiment shown in Fig. 2 of the present invention, should
Step 203 includes：
Step 501, judge the deviation variable of i-th frequency range whether in preset deviation range, the value of the i from
1 to N, the N are frequency range sum；
Step 502, when the deviation variable of i-th frequency range is in the deviation range, it is determined that need not be to institute
The each channel for stating i-th frequency range is compensated；
If the deviation variable of step 503 i-th frequency range, in the deviation range, does not compensate described i-th
The deviation of the DVGA OFFSET of all channels of frequency range.
In embodiments of the present invention, after the deviation variable for calculating each frequency range, calibrating installation will successively for calibrating installation
Each frequency range is processed, by taking i-th each frequency range as an example, the i to from 1 to N, and N is frequency range sum, and calibrating installation will determine that this
Whether the deviation variable of i-th frequency range is in preset deviation range, if the deviation variable of i-th frequency range is in being somebody's turn to do
In preset deviation range, then show that the gain deviation of i-th frequency range is less, do not interfere with radio frequency reception link normal
Work, therefore, calibrating installation will determine and each channel of i-th each frequency range need not be compensated.
In embodiments of the present invention, if the deviation variable of i-th frequency range is not in the preset deviation range,
Show that the gain deviation of i-th frequency range is larger, if uncompensation, it will have influence on radio frequency reception link normal work, therefore, school
Standard apparatus will compensate the deviation of the DVGA OFFSET of all channels of i-th frequency range, so that i-th after compensation
Deviation variable of the frequency range within the next time cycle is in preset deviation range, to ensure that the radio frequency of mobile terminal connects
Receive link normally to work.It should be noted that specifically how to realize that compensation is prior art, do not repeat herein.
It is understood that for each frequency range, all whether needing to carry out to the frequency range by the mode according to step 501
Compensation is judged, is calibrated with completing the DVGA to all frequency ranges.
In embodiments of the present invention, whether calibrating installation is by judging the deviation variable of i-th frequency range in preset
Mode in deviation range determines whether i-th frequency range needs to compensate, and i-th frequency range deviation variable not at this
When in preset deviation range, the deviation of the DVGA OFFSET of all channels of i-th frequency range is compensated, to realize to this
The DVGA calibrations of i-th frequency range, and by the way, the DVGA to all frequency ranges can be completed and calibrated, effectively can be made up
The error of each gain stage, to guarantee the signal stabilization of radio frequency reception link reception, it is to avoid the problems such as suspension call drop occur.
It should be noted that in the first embodiment, also following steps will be executed after calibration is completed for calibrating installation：
Delete DVGA of the sample channel of the described each frequency range gathered within the time cycle under each gain stage
The deviation of OFFSET, and when the next time cycle is entered, return execution step 201.
In embodiments of the present invention, after calibrating installation completes DVGA calibrations, will delete in the above-mentioned preset time cycle
The deviation of DVGA OFFSET of the sample channel of each frequency range of interior collection under each gain stage, to avoid storing these deviations
The occupancy of the memory space that value is brought.And calibrating installation will also enter the next time cycle, and entering next week time
After phase, the step 201 shown in Fig. 2, i.e. calibrating installation will be returned and radio frequency reception link will be gathered in the next time cycle
Interior, the deviation of the DVGA OFFSET of the sample channel of each frequency range under each gain stage, so as within the next time cycle
Realize the DVGA calibrations of radio frequency reception link, with guarantee radio frequency reception link when signal is received can normal work, and pass through
The mode that above-mentioned circulation is repeatedly calibrated, can realize that the DVGA to radio frequency reception link is calibrated in real time.
Fig. 6 is referred to, is the functional module of digital variable gain amplifier calibrating installation in second embodiment of the invention
Schematic diagram, the calibrating installation include：Acquisition module 601, variable computing module 602 and compensating module 603.
Acquisition module 601, for gathering radio frequency reception link within the preset time cycle, the sample channel of each frequency range exists
The deviation of the digital variable gain amplifier gain offsets value DVGA OFFSET under each gain stage；
In embodiments of the present invention, digital variable gain amplifier calibrating installation is (hereinafter referred to as：Calibrating installation) it is Fig. 1
A part in shown mobile terminal.
In embodiments of the present invention, include radio frequency link in mobile terminal, specifically connect comprising radio frequency transmission link and radio frequency
Link is received, the radio frequency reception link is used for the signal for receiving outside transmission.Generally the radio frequency reception link includes antenna, LAN, mixes
Frequency device, DVGA, demodulator, and the path of radio frequency reception link received signals is：Antenna-LAN- frequency mixer-DVGA- demodulators,
Wherein, demodulator can only receive the signal of certain power and could reconcile, that is, the power for reaching demodulator must be fixed.This
Calibrating installation in bright embodiment is by way of mobile terminal is calibrated to DVGA in use to cause radio frequency reception
In link, demodulator receives the signal of certain power, so that the radio frequency reception link of mobile terminal normally can work.
In embodiments of the present invention, mobile terminal is in the case of normal cluster (i.e. registered mobile network), calibration cartridge
Put and DVGA will be calibrated, with ensure mobile terminal radio frequency reception link can normal work, wherein, calibrating installation be with
One preset time cycle was calibrated for the cycle, and for example, the time cycle can be a hour or 2 hours
Deng, and it is understood that in actual applications, the preset time cycle can be configured according to specific circumstances, this
Place does not limit.
In embodiments of the present invention, radio-frequency transmissions link can use multiple frequency ranges, and each frequency range has multiple letters
Road, calibrates consumed resource to reduce, will determine sample channel, example according to presetting rule from all channels of frequency range
Such as, if a frequency range has 20 channels, using the 1st, 5,10,15,20 channels as sample channel.
Wherein, the acquisition module 601 in calibrating installation will gather radio frequency reception link within the preset time cycle, each frequency
The deviation of DVGA OFFSET of the sample channel of section under each gain stage.
For the technical scheme being better understood from the embodiment of the present invention, the table in first embodiment shown in Fig. 2 is referred to
1, deviation of the table 1 for the DVGA OFFSET of each sample channel under different gains level of frequency range A, and specifically, the table 1
As follows：
The deviation of DVGA OFFST of each sample channel of 1 frequency range A of table under each gain stage
In embodiments of the present invention, the gain stage of radio frequency reception link is divided into LAN0 to LAN4 totally 5 kinds of different ranks, and
The gain stage highest of LAN0.
Wherein, deviation of the channel under gain stage refers to DVGA OFFSET that this collects relative to pre-setting
Deviation between standard deviation value of the channel under the gain stage.So that sample channel in frequency range A 2 is in LAN2 as an example, elder generation is needed
DVGA OFFSET of the sample channel 2 under LAN2 is gathered, and calculates the DVGA OFFSET and existed with the sample channel 2 for pre-setting
The difference between standard deviation value under LAN2, the difference are deviation Δ G22.
Variable computing module 602, for DVGA OFFSET of the sample channel using each frequency range under each gain stage
Deviation calculate the deviation variable of each frequency range；
Compensating module 603, for entering to the channel in each frequency range according to the deviation variable of each frequency range respectively
Row compensation, to realize that DVGA is calibrated.
In embodiments of the present invention, calibrating installation is obtaining DVGA of the sample channel of each frequency range under each gain stage
After the deviation of OFFSTE, DVGA of the variable computing module 602 by the sample channel using each frequency range under each gain stage
The deviation of OFFSET calculates the deviation variable of each frequency range, and by compensating module 603 according to the deviation variable of each frequency range
Respectively the channel in each frequency range is compensated, to realize that DVGA is calibrated.
In embodiments of the present invention, calibrating installation collection radio frequency reception link is within the preset time cycle, each frequency range
The deviation of DVGA OFFSET of the sample channel under each gain stage, and using each frequency range sample channel under each gain stage
Deviation calculate the deviation variable of each frequency range, and respectively the channel in each frequency range is entered according to the deviation variable of each frequency range
Row compensation, to realize that DVGA is calibrated.By gathering the sample channel of radio frequency reception link each frequency range within the preset time cycle
The mode of the deviation of the DVGA OFFSET under each gain stage, can calculate the deviation variable of each frequency range, should to be based on
The deviation variable of each frequency range is compensated to the deviation of the DVGA OFFSET of the channel in each frequency range, to realize DVGA schools
Standard, makes up the error of each gain stage, to guarantee the signal stabilization of radio frequency reception link reception, it is to avoid suspension call drop etc. occur and ask
Topic.
Fig. 7 is referred to, is the refinement functional module of variable computing module 602 in second embodiment shown in Fig. 6 of the present invention
Schematic diagram, the variable computing module 602 include：First computing module 701 and the second computing module 702.
First computing module 701, for deviation of the sample channel using each frequency range under each gain stage, calculates
Each frequency range distinguishes corresponding deviation average under each gain stage；
Second computing module 702, for distinguishing corresponding deviation average according to each frequency range under each gain stage, calculates
The deviation variable of each frequency range.
In embodiments of the present invention, calibrating installation is obtaining DVGA of the sample channel of each frequency range under each gain stage
After the deviation of OFFSET, deviation of second computing module 702 by the sample channel using each frequency range under each gain stage,
Calculating each frequency range, corresponding deviation average is distinguished under each gain stage.
As a example by table 1 in based on first embodiment shown in 2, need to calculate frequency range A at each gain stage (i.e. LAN0 to LAN4)
Under deviation average, specifically, for deviation average of frequency range A under LAN0, can be calculated according to equation below：
Δ G0=(Δ G01+ Δ G02+ ...+Δ G0N)/N
Wherein, Δ G0 represents that deviation average of frequency range A under LAN0, Δ G01 to Δ G0N represent that frequency range A is each under LAN0
The deviation of the DVGA OFFSET of sample channel, N represent the total number of sample channel.
It is understood that based on above-mentioned formula, deviation average of frequency range A under other gain stages can also be obtained, can
The table 2 shown in Fig. 3 is obtained, and the table 2 is specific as follows.
Table 2
In embodiments of the present invention, calibrating installation obtain each frequency range under each gain stage distinguish corresponding deviation average it
Afterwards, the deviation variable of each frequency range of corresponding deviation mean value computation can be distinguished according to each frequency range under each gain stage so that energy
Enough the channel of each frequency range is compensated based on the deviation variable of each frequency range, to realize that DVGA is calibrated, make up each gain stage
Error, to guarantee the signal stabilization of radio frequency reception link reception, it is to avoid the problems such as suspension call drop occur.
Fig. 8 is referred to, is the schematic diagram of the refinement functional module of the second computing module 702 shown in Fig. 7 of the present invention, this second
Computing module 702 includes：3rd computing module 801 and difference calculating module 802.
3rd computing module 801, for using each frequency range, under each gain stage, corresponding deviation average is carried out respectively
Computing is averaging, the deviation average of each frequency range is obtained；
Difference calculating module 802, for determining the deviation average of each frequency range with preset described each frequency respectively
Section standard deviation value between difference, using the difference for obtaining as each frequency range deviation variable.
In embodiments of the present invention, calibrating installation obtain each frequency range under each gain stage distinguish corresponding deviation average it
Afterwards, the 3rd computing module 801 will under each gain stage, corresponding deviation average carries out being averaging computing respectively using each frequency range, obtains
To the deviation average of each frequency range, for example, if there are 5 frequency ranges, distinguishing under each gain stage for 5 frequency ranges will be utilized respectively
Corresponding deviation average carries out being averaging computing, obtains the deviation average of 5 frequency ranges.
By taking the table 2 shown in Fig. 7 as an example, when the deviation average of frequency range A is calculated, need frequency range A in gain stage
The deviation average of LAN0 to LAN4 is averaging, specifically：
DVGA OFFSET_A=(Δ G0+ Δ G1+ Δ G2+ Δ G3+ Δ G4)/4
It is understood that based on aforesaid way, the deviation average of each frequency range can be obtained.
In embodiments of the present invention, calibrating installation, will be by difference calculating module after the deviation average for obtaining each frequency range
Difference between the 802 deviation averages for determining each frequency range respectively and the standard deviation value of preset each frequency range, by the difference for obtaining
As the deviation variable of each frequency range, for example, for frequency range A, need for the deviation average of frequency range A to deduct preset frequency range A
Standard deviation value, and using the difference for obtaining as frequency range A deviation variable, specifically, it is possible to use below equation：
Δ G (A)=DVGA OFFSET_A-DVGA OFFSET_A0
Wherein, Δ G (A) represents that the deviation variable of frequency range A, DVGA OFFSET_A represent the deviation average of frequency range A,
DVGA OFFSET_A0 represent the standard deviation value of frequency range A.
It is understood that the deviation variable of each frequency range by the way, can be calculated.
In embodiments of the present invention, calibrating installation obtain each frequency range under each gain stage distinguish corresponding deviation average it
Afterwards, will using each frequency range, under each gain stage, corresponding deviation average carries out being averaging computing respectively, obtain the deviation of each frequency range
Average, and determine respectively each frequency range deviation average and preset each frequency range standard deviation value between difference, by obtained
Deviation variable of the difference as each frequency range, enabling the channel of each frequency range is mended based on the deviation variable of each frequency range
Repay, to realize that DVGA is calibrated, make up the error of each gain stage, to guarantee the signal stabilization of radio frequency reception link reception, it is to avoid go out
The problems such as existing suspension call drop.
Fig. 9 is referred to, is the signal of the refinement functional module of compensating module 603 in second embodiment shown in Fig. 6 of the present invention
Figure, the compensating module 603 include：
Judge module 901, for judging whether the deviation variable of i-th frequency range is in preset deviation range, institute
The value of i is stated from 1 to N, the N is frequency range sum；
Determining module 902, for the deviation variable when i-th frequency range in the deviation range, it is determined that no
Need to compensate each channel of i-th frequency range；
Deviation compensation module 903, if for i-th frequency range deviation variable not in the deviation range,
Compensate the deviation of the DVGA OFFSET of all channels of i-th frequency range.
In embodiments of the present invention, calibrating installation is after the deviation variable for calculating each frequency range, and judge module 901 will be according to
Secondary each frequency range is processed, by taking i-th each frequency range as an example, the i to from 1 to N, and N is frequency range sum, and judge module 901 will
The deviation variable of i-th frequency range is judged whether in preset deviation range, if the deviation variable of i-th frequency range
In the preset deviation range, then show that the gain deviation of i-th frequency range is less, do not interfere with radio frequency reception chain
Road normal work, accordingly, it is determined that module 902 will determine need not compensate to each channel of i-th each frequency range.
In embodiments of the present invention, if the deviation variable of i-th frequency range is not in the preset deviation range,
Show that the gain deviation of i-th frequency range is larger, if uncompensation, it will have influence on radio frequency reception link normal work, therefore, partially
Difference compensating module 903 will compensate the deviation of the DVGA OFFSET of all channels of i-th frequency range, so that after compensation
Deviation variable of i-th frequency range within the next time cycle in preset deviation range, to ensure mobile terminal
Radio frequency reception link normally can work.
It is understood that for each frequency range, all whether will need to compensate by 901 pairs of frequency ranges of judge module
Judged, calibrated with completing the DVGA to all frequency ranges.
In embodiments of the present invention, whether calibrating installation is by judging the deviation variable of i-th frequency range in preset
Mode in deviation range determines whether i-th frequency range needs to compensate, and i-th frequency range deviation variable not at this
When in preset deviation range, the deviation of the DVGA OFFSET of all channels of i-th frequency range is compensated, to realize to this
The DVGA calibrations of i-th frequency range, and by the way, the DVGA to all frequency ranges can be completed and calibrated, effectively can be made up
The error of each gain stage, to guarantee the signal stabilization of radio frequency reception link reception, it is to avoid the problems such as suspension call drop occur.
Further, in embodiments of the present invention, above-mentioned digital variable gain amplifier calibrating installation also includes：
Delete and return module (being not shown), for after the compensating module 603, deleting in the week time
The deviation of DVGA OFFSET of the sample channel of described each frequency range of collection under each gain stage in phase, and next entering
During the individual time cycle, the acquisition module 601 is returned.
In embodiments of the present invention, after calibrating installation completes DVGA calibrations, delete and module is returned by deletion above-mentioned pre-
The deviation of DVGA OFFSET of the sample channel of each frequency range of collection under each gain stage in the time cycle that puts, to avoid
Store the occupancy of the memory space that these deviations are brought.And calibrating installation will also enter the next time cycle, and entering
After the next time cycle, the acquisition module 601 shown in Fig. 6 will be returned, i.e., radio frequency reception link is gathered by acquisition module 601
Within the next time cycle, the deviation of the DVGA OFFSET of the sample channel of each frequency range under each gain stage, so as to
The DVGA calibrations of radio frequency reception link are realized in the next time cycle, to guarantee radio frequency reception link energy when signal is received
Enough normal works, and by way of above-mentioned circulation is repeatedly calibrated, the DVGA schools to radio frequency reception link can be realized in real time
Accurate.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, which can be passed through
Its mode is realized.For example, device embodiment described above is only schematically, for example division of the module, only
Only a kind of division of logic function, can have other dividing mode, for example multiple module or components tie when actually realizing
Close or be desirably integrated into another system, or some features can be ignored, or do not execute.Another, shown or discussed
Coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, device or module or logical
Letter connection, can be electrical, mechanical or other forms.
The module that illustrates as separating component can be or may not be physically separate, aobvious as module
The part for showing can be or may not be physical module, you can be located at a place, or can also be distributed to multiple
On mixed-media network modules mixed-media.Some or all of module therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional module in each embodiment of the invention can be integrated in a processing module, it is also possible to
It is that modules are individually physically present, it is also possible to which two or more modules are integrated in a module.Above-mentioned integrated mould
Block both can be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.
If the integrated module is realized and as independent production marketing or use using in the form of software function module
When, can be stored in a computer read/write memory medium.Such understanding is based on, technical scheme is substantially
The part that in other words prior art is contributed or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, use so that a computer including some instructions
Equipment (can be personal computer, server, or network equipment etc.) executes the complete of each embodiment methods described of the invention
Portion or part steps.And aforesaid storage medium includes：USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
It should be noted that for aforesaid each method embodiment, for easy description, therefore which is all expressed as a series of
Combination of actions, but those skilled in the art should know, the present invention do not limited by described sequence of movement because
According to the present invention, some steps can be carried out using other orders or simultaneously.Secondly, those skilled in the art should also know
Know, embodiment described in this description belongs to preferred embodiment, and involved action and module might not all be these
Bright necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the portion that describes in detail
Point, may refer to the associated description of other embodiments.
It is more than the description to a kind of digital variable gain amplifier calibration steps provided by the present invention and device, for
Those skilled in the art, according to the thought of the embodiment of the present invention, has change in specific embodiments and applications
Part, to sum up, this specification content should not be construed as limiting the invention.
Claims (10)
1. a kind of digital variable gain amplifier calibration steps, it is characterised in that methods described includes：
Collection radio frequency reception link within the preset time cycle, the digital variable of the sample channel of each frequency range under each gain stage
The deviation of gain amplifier gain deviant DVGA OFFSET；
Each frequency range is calculated using the deviation of the DVGA OFFSET of the sample channel under each gain stage of each frequency range
Deviation variable；
Deviation variable according to each frequency range is compensated to the channel in each frequency range respectively, to realize DVGA schools
Accurate.
2. method according to claim 1, it is characterised in that the sample channel using each frequency range is in each gain
The step of deviation under level calculates the deviation variable of each frequency range includes：
Using the deviation of the sample channel under each gain stage of each frequency range, each frequency range is calculated under each gain stage point
Not corresponding deviation average；
Corresponding deviation average is distinguished under each gain stage according to each frequency range, the deviation variable of each frequency range is calculated.
3. method according to claim 2, it is characterised in that described right respectively under each gain stage according to each frequency range
The step of deviation average that answers, deviation variable for calculating each frequency range, includes：
Using each frequency range, under each gain stage, corresponding deviation average carries out being averaging computing respectively, obtains each frequency range
Deviation average；
Determine respectively each frequency range deviation average and preset described each frequency range standard deviation value between difference,
Using the difference for obtaining as each frequency range deviation variable.
4. the method according to claims 1 to 3 any one, it is characterised in that the deviation according to each frequency range
Value variable is compensated to the channel in each frequency range respectively, to realize that the step of DVGA is calibrated includes：
The deviation variable of i-th frequency range is judged whether in preset deviation range, from 1 to N, the N is the value of the i
Frequency range sum；
When the deviation variable of i-th frequency range is in the deviation range, it is determined that need not be to i-th frequency range
Each channel is compensated；
If the deviation variable of i-th frequency range compensates all letters of i-th frequency range not in the deviation range
The deviation of the DVGA OFFSET in road.
5. the method according to claims 1 to 3 any one, it is characterised in that the deviation according to each frequency range
Value variable is compensated to the channel in each frequency range respectively, to include after realizing the step of DVGA is calibrated：
Delete DVGA OFFSET of the sample channel of the described each frequency range gathered within the time cycle under each gain stage
Deviation, and when the next time cycle is entered, return and execute the collection radio frequency reception link in the preset time
In cycle, the digital variable gain amplifier gain offsets value DVGA OFFSET of the sample channel of each frequency range under each gain stage
Deviation the step of.
6. a kind of digital variable gain amplifier calibrating installation, it is characterised in that described device includes：
Acquisition module, for gathering radio frequency reception link within the preset time cycle, the sample channel of each frequency range is in each gain
The deviation of the digital variable gain amplifier gain offsets value DVGA OFFSET under level；
Variable computing module, for the deviation of DVGA OFFSET of the sample channel using each frequency range under each gain stage
Value calculates the deviation variable of each frequency range；
Compensating module, for being compensated to the channel in each frequency range according to the deviation variable of each frequency range respectively,
To realize that DVGA is calibrated.
7. device according to claim 6, it is characterised in that the variable computing module includes：
First computing module, for deviation of the sample channel using each frequency range under each gain stage, calculates described each
Frequency range distinguishes corresponding deviation average under each gain stage；
Second computing module, for distinguishing corresponding deviation average according to each frequency range under each gain stage, calculates described each
The deviation variable of frequency range.
8. device according to claim 7, it is characterised in that second computing module includes：
3rd computing module, for using each frequency range, under each gain stage, corresponding deviation average carries out being averaging fortune respectively
Calculate, obtain the deviation average of each frequency range；
Difference calculating module, for determining the standard of the deviation average of each frequency range and preset described each frequency range respectively
Difference between deviation, using the difference for obtaining as each frequency range deviation variable.
9. the device according to claim 6 to 8 any one, it is characterised in that the compensating module includes：
Judge module, for judging whether the deviation variable of i-th frequency range is in preset deviation range, the value of the i
From 1 to N, the N is frequency range sum；
Determining module, for the deviation variable when i-th frequency range in the deviation range, it is determined that need not be to institute
The each channel for stating i-th frequency range is compensated；
Deviation compensation module, if for i-th frequency range deviation variable not in the deviation range, compensation is described
The deviation of the DVGA OFFSET of all channels of i-th frequency range.
10. the device according to claim 6 to 8 any one, it is characterised in that described device also includes：
Delete and return module, for after the compensating module, deleting the described each frequency range gathered within the time cycle
DVGA OFFSET of the sample channel under each gain stage deviation, and when the next time cycle is entered, return
The acquisition module.
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| US7020449B2 (en) * | 2002-10-21 | 2006-03-28 | Broadcom Corporation | Fast settling variable gain amplifier with DC offset cancellation |
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