CN108259036A - VCO and its transmitting frequency calibration method, electronic equipment and computer storage media - Google Patents
VCO and its transmitting frequency calibration method, electronic equipment and computer storage media Download PDFInfo
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- CN108259036A CN108259036A CN201810019718.3A CN201810019718A CN108259036A CN 108259036 A CN108259036 A CN 108259036A CN 201810019718 A CN201810019718 A CN 201810019718A CN 108259036 A CN108259036 A CN 108259036A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
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Abstract
The embodiment of the invention discloses a kind of VCO and its transmitting frequency calibration method, electronic equipment and computer storage media, this method includes：The practical center frequency of the first varactor is measured, wherein, the initial centre frequencies of first varactor are the target operating frequency of VCO；If between the practical center frequency and initial centre frequencies of first varactor, there are deviations, then the initial centre frequencies of the second varactor are calibrated according to the deviation, wherein, the sequence that varactor in the VCO is gradually increased or reduced according to initial centre frequencies is arranged in parallel successively, and second varactor is the preset quantity varactor being set in the VCO near first varactor；Based on each frequency calibration as a result, choosing corresponding second varactor of the target operating frequency as target varactor, and then realize to the quickly calibrated of VCO.
Description
Technical field
The present embodiments relate to field of communication technology more particularly to a kind of VCO and its transmitting frequency calibration method, electronic equipment
And computer storage media.
Background technology
In radiotechnics, in order to improve the performance of electronic equipment, setting feedback control is electric extensively in the electronic device
Road, such as phase-locked loop (Phase Locked Loop, PLL).PLL is phase error control system, is by reference signal and defeated
The phase gone out between signal is compared, and generates phase error voltage to adjust the phase of output signal, to reach output signal
With reference signal with the purpose of frequency.Core devices in wherein PLL are voltage controlled oscillator (Voltage Controlled
Oscillator, VCO), VCO is for making frequency of oscillation be drawn close to the frequency of reference signal, until the frequency of the two is identical so that
The phase of VCO output signals and the phase of reference signal keep certain specific relationship, achieve the purpose that PGC demodulation.
It follows that VCO plays crucial effect in a pll, the accuracy of VCO directly affects the accuracy of PLL.But
It is that the centre frequency of each varactor can change with the variation of working environment (such as environment temperature) in VCO.Therefore, every
Before secondary use VCO, it is necessary first to which VCO is calibrated.The transmitting frequency calibration method of VCO is at present, to each transfiguration in VCO
Pipe is remeasured, and determines centre frequency of each varactor at current time.
But the varactor that VCO includes is more, measurement is re-started to each varactor, when needing to expend a large amount of
Between.
Invention content
The embodiment of the present invention provides a kind of VCO and its transmitting frequency calibration method, electronic equipment and computer storage media, with solution
The transmitting frequency calibration method of certainly existing VCO the problem of time-consuming.
In a first aspect, the embodiment of the present invention provides a kind of transmitting frequency calibration method of VCO, including：
The practical center frequency of the first varactor is measured, wherein, the initial centre frequencies of first varactor are VCO's
Target operating frequency；
If there are deviation between the practical center frequency and initial centre frequencies of first varactor, according to described inclined
Difference calibrates the initial centre frequencies of the second varactor, wherein, varactor in the VCO according to initial centre frequencies by
The sequence gradually increased or reduced is arranged in parallel successively, and second varactor is attached set on first varactor in the VCO
Near preset quantity varactor；
Based on each frequency calibration as a result, choosing corresponding second varactor of the target operating frequency as target transfiguration
Pipe.
Second aspect, the embodiment of the present invention provide a kind of VCO, including：
Multiple varactors, the sequence gradually increased or reduced according to initial centre frequencies respectively are arranged in parallel successively；
Memory, for storing computer program；
Processor, for performing the computer program, to realize the transmitting frequency calibration method of the VCO described in first aspect.
The third aspect, the embodiment of the present invention provide a kind of electronic equipment, including：VCO described in second aspect.
Fourth aspect, the embodiment of the present invention provide a kind of computer storage media, computer are stored in the storage medium
Program, the computer program realize the transmitting frequency calibration method of the VCO described in above-mentioned first aspect when being executed.
The embodiment of the present invention has the beneficial effect that：
In embodiments of the present invention, by measuring the practical center frequency of the first varactor, wherein the first varactor is first
Beginning centre frequency is the target operating frequency of VCO；If it is deposited between the practical center frequency and initial centre frequencies of the first varactor
In deviation, then the initial centre frequencies of the second varactor are calibrated according to deviation；Based on each frequency calibration as a result, choosing mesh
Corresponding second varactor of working frequency is marked as target varactor.That is the method for the present embodiment, only to the reality of the first varactor
Border centre frequency carries out one-shot measurement, and the practical center frequency of the first varactor based on the measurement and its initial centre frequencies
Deviation, the initial centre frequencies of each second varactor in VCO near the first varactor are calibrated, greatly reduce survey
The number of amount, improves the calibration speed of VCO, and then improves the working efficiency of PLL.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of PLL；
Fig. 2 is the structure diagram of VCO in the embodiment of the present invention；
Fig. 3 is the flow chart of the transmitting frequency calibration method of VCO provided in an embodiment of the present invention；
Fig. 4 is first position schematic diagram of second varactor in VCO in the embodiment of the present invention；
Fig. 5 is second position schematic diagram of second varactor in VCO in the embodiment of the present invention；
Fig. 6 is the third place schematic diagram of second varactor in VCO in the embodiment of the present invention；
Fig. 7 is fourth position view of second varactor in VCO in the embodiment of the present invention；
Fig. 8 is fiveth position view of second varactor in VCO in the embodiment of the present invention；
Fig. 9 is the structure diagram of VCO provided in an embodiment of the present invention；
Figure 10 is the structure diagram of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
Fig. 1 is the structure diagram of PLL, as shown in Figure 1, PLL includes phase discriminator, loop filter and voltage controlled oscillator
VCO.Wherein, phase discriminator is phase comparison device, for the phase of the output signal uo (t) of comparison reference signal ui (t) and VCO
Position, its output voltage ud (t) correspond to the function of the phase difference of ui (t) and uo (t).Loop filter is to filter out ud (t)
In high fdrequency component and noise, to ensure the performance required by loop.VCO by loop filter output voltage uc (t) control,
Frequency of oscillation is made to be drawn close to the frequency of reference information ui (t), until the frequency of the two is identical so that the phase of VCO output signals
Certain specific relationship is kept with the phase of reference signal, achievees the purpose that PGC demodulation.
The operation principle of PLL is that the output signal uo (t) of reference signal ui (t) and VCO is compared in phase discriminator,
Phase discriminator exports a voltage ud (t) proportional to the phase difference of (i.e. uo (t) and ui (t)) between the two, which is known as missing
Potential difference.Then, loop filter filters out the high fdrequency component in ud (t), and then filtered ud (t) is input in VCO.
The output signal frequency of VCO changes with the variation of reference signal.When the frequency of the output signal of VCO and the frequency of reference signal
When rate is inconsistent, then the output of phase discriminator will generate low frequency variations component, and pass through loop filter, make the output signal of VCO
Frequency change.The above process is recycled, until the frequency of the output signal of VCO is consistent with the frequency of reference signal ui (t)
When, the frequency of VCO stops variation, and loop is in the lock state.
As shown in Fig. 2, VCO is made of multiple varactors, each varactor corresponds to a frequency range, by each frequency range
Centre frequency of the median as the frequency range.But the centre frequency of each varactor can be with working environment in VCO
The variation of (such as environment temperature) and change.I.e. when environmental change, when the practical center frequency of each varactor is with manufacture in VCO
Initial centre frequencies differ, at this time if still according to the initial centre frequencies of VCO carry out PLL controls when, PLL can be caused
The problem of can not work normally.Therefore, before every time using VCO, it is necessary first to which VCO is calibrated.
The prior art is the centre frequency by remeasuring each varactor in VCO, and VCO is calibrated with realizing.But
The varactor that VCO includes is more, re-starts measurement to each varactor, needs to take a long time.
In order to solve the above-mentioned technical problem, the transmitting frequency calibration method of VCO provided in an embodiment of the present invention measures the first transfiguration
The practical center frequency of pipe, and the practical center frequency based on the first varactor and the deviation of its initial centre frequencies, in VCO
The initial centre frequencies of each varactor near first varactor are calibrated, based on each frequency calibration as a result, choosing target work
The corresponding target varactor of working frequency.That is the method for the present embodiment, it is only necessary to be passed in and out to the centre frequency of the first varactor primary
It measures, is calibrated based on the measurement result, pendulous frequency is few, substantially increases the calibration speed of VCO, and then improves
The working efficiency of PLL.
Technical scheme of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 3 is the flow chart of the transmitting frequency calibration method of VCO provided in an embodiment of the present invention.It should be as shown in figure 3, the present embodiment
Method can include：
S101, the practical center frequency for measuring the first varactor, wherein, the initial centre frequencies of first varactor are
The target operating frequency of VCO.
The executive agent of the present embodiment is VCO (being specifically the processor in VCO), which can be separately provided, can also
Setting is in the electronic device.The electronic equipment can be TV, bluetooth equipment, remote-measuring equipment or receiver etc..
The method of the present embodiment can be realized before PLL is controlled or be realized when PLL is in open loop situations.
As shown in Fig. 2, VCO includes multiple varactors, each varactor is connected one and is switched, controlled by the switch
The connecting and disconnecting of the varactor.
Each varactor corresponds to a frequency range, and the median of the frequency range is denoted as to the center frequency of the varactor
Rate.For example, the corresponding frequency ranges of varactor a are [100GHz, 200GHz], then the centre frequency of varactor a is 150GHz.
When VCO dispatches from the factory, the initial centre frequencies of each varactor in VCO are measured, specifically, such as Fig. 2 institutes
Show, closure switch K1 disconnects other switches, and a test voltage (such as the test electricity of 1.5V is added at the both ends of first varactor
Pressure), the range of initial frequencies of first varactor of measurement.Then, using the median of the range of initial frequencies as first change
Hold the initial centre frequencies of pipe.With reference to the above method, the range of initial frequencies of each varactor is measured successively, obtains each transfiguration
Manage corresponding initial centre frequencies.
Each electronic equipment corresponds to multiple and different working frequencies, such as bluetooth equipment corresponds to 40 working frequencies.In this way
The corresponding varactor of preset each working frequency can be obtained from the corresponding initial centre frequencies of each varactor.
For example, by taking bluetooth equipment as an example, it is assumed that the VCO in the bluetooth equipment includes 128 varactors, each varactor pair
An initial centre frequencies are answered, and then obtain the one-to-one relationship between 128 varactors and 128 initial centre frequencies,
Form table 1：
Table 1
| Varactor title | Initial centre frequencies (GHz) |
| Varactor 1 | 100 |
| Varactor 2 | 102 |
| …… | …… |
| Varactor 128 | 354 |
Then, from the corresponding initial centre frequencies of each varactor, the corresponding transfiguration of preset each working frequency is obtained
Pipe.
With continued reference to above-mentioned example, it is assumed that bluetooth equipment corresponds to 40 working frequencies, at this time can be from 128 shown in table 1
In a initial centre frequencies, search with 40 working frequencies matched each initial centre frequencies one by one, by these initial centers frequency
The corresponding varactor of rate is denoted as the corresponding varactor of each working frequency.40 working frequencies and 40 transfigurations can be obtained in this way
One-to-one relationship between pipe forms table 2：
Table 2
| Working frequency (GHz) | Varactor title |
| 100 | Varactor 1 |
| 120 | Varactor 11 |
| …… | …… |
| 140 | Varactor 21 |
It can be seen from the above, table 2 is a part for table 1, wherein Tables 1 and 2 can be provided with, and preserve in manufacture
In the electronic device, calibrating installation can obtain the initial centre frequencies in VCO corresponding to each varactor from electronic equipment, with
And the corresponding varactor of each working frequency.
In actual use, electronic device works are in each working frequency under some working frequency, such as actually make
The working frequency under some working frequency, is denoted as the target work of VCO by used time, Bluetooth device operation in 40 working frequencies
Working frequency.That is, the purpose that PLL is controlled in electronic equipment it is expected the Frequency Locking of the electronic equipment to the target
Working frequency, so that electronic equipment steady operation under the target operating frequency.
For example, the target operating frequency of VCO is 120GHz, in this way from table 1 or 2 it is found that the corresponding varactors 11 of 120GHz,
Therefore, the varactor 11 in VCO is denoted as the first varactor.
Due to the variation of environment, the centre frequency of the first varactor can be caused to change.For example, bluetooth equipment is producing
When residing environment it is different from the environment residing for current time bluetooth equipment, in such bluetooth equipment the first varactor it is initial in
The practical center frequency of frequency of heart and the first varactor of current time differs, and needs the practical center frequency to the first varactor
Disengaging measures.
Wherein, the initial center of the measurement method of the practical center frequency of the first varactor and each varactor in above-mentioned VCO
The measuring method of frequency is identical.Specifically, test voltage (such as test voltage of 1.5V) is subject at the both ends of the first varactor,
The frequency range of the first varactor is obtained, using the centre frequency of the frequency range as the practical center frequency of first varactor
Rate.
I.e. the present embodiment only measures the practical center frequency of the first varactor, and VCO is calibrated based on the measurement result,
Each varactor is measured compared with the prior art and is compared, greatly reduces the data volume of measurement, and then improves VCO's
Calibration efficiency.
If between S102, the practical center frequency of first varactor and initial centre frequencies, there are deviation, bases
The deviation calibrates the initial centre frequencies of the second varactor, wherein, the varactor in the VCO is according to initial center
The sequence that frequency gradually increases or reduces is arranged in parallel successively, and second varactor is to be set on described first in the VCO to become
Hold the preset quantity varactor near pipe.
S103, based on each frequency calibration as a result, choosing corresponding second varactor of the target operating frequency as target
Varactor.
Specifically, obtaining the practical center frequency of the first varactor according to above-mentioned steps, the first change can be obtained from table 1
Hold the initial centre frequencies of pipe.Then, practical center frequency with initial centre frequencies is compared, judges the first varactor
It whether there is deviation between practical center frequency and initial centre frequencies.
With the variation of environment, the practical center frequency of varactor may become near the initial centre frequencies of varactor
Change, and the sequence that each varactor is gradually increased or reduced according to initial centre frequencies in VCO is arranged in parallel successively.Therefore, when
There are during deviation between the practical center frequency and initial centre frequencies of one varactor, it may be determined that target operating frequency and first
The centre frequency of some varactor near varactor is identical.
In this way, the preset quantity varactor being arranged near the first varactor can be obtained from each varactor of VCO
As the second varactor.For example, preceding 10 varactors of the first varactor are obtained, using this 10 varactors as the second transfiguration
Pipe；Or rear 10 varactors of the first varactor are obtained, using this 10 varactors as the second varactor；Alternatively, obtain the
Preceding 5 varactors and rear 5 varactors of one varactor, using this 10 varactors as the second varactor.The present embodiment is to obtaining
The number of the second varactor taken is not limited, and is determined with specific reference to actual needs.
After the second varactor determines, according to the practical center frequency of the first varactor and the deviation of initial centre frequencies
To calibrate the initial centre frequencies of each second varactor.For example, by the initial centre frequencies of each second varactor and above-mentioned deviation
Sum, the frequency calibration result as each second varactor；Alternatively, by the initial centre frequencies of each second varactor and deviation
With multiplied by with preset coefficient, the frequency calibration result as each second varactor.Optionally, others side can also be used
Method calibrates the initial centre frequencies of each second varactor using deviation, obtains the frequency calibration result of each second varactor.
In a kind of example, it is assumed that the initial centre frequencies and target operating frequency of the first varactor are 120GHz, warp
The practical center frequency of the first varactor of current time is measured as 124GHz, at this point, the practical center frequency of the first varactor with
The deviation of its initial centre frequencies is 4GHz.Preceding 3 varactors of the first varactor are obtained from each varactor of VCO, successively
It is denoted as the second varactor 1, the second varactor 2 and the second varactor 3.As shown in Table 1, initial centre frequencies 120GHz corresponding
One varactor is varactor 11, and therefore, preceding 3 varactors of varactor 11 are respectively varactor 10, varactor 9, varactor 8.
That is the second varactor 1 be varactor 10, corresponding initial centre frequencies 118GHz；Second varactor 2 is varactor 9, right
The initial centre frequencies 116GHz answered；Second varactor 3 be varactor 8, corresponding initial centre frequencies 114GHz.
Then, increase on the basis of the initial centre frequencies of the second varactor 1, the second varactor 2 and the second varactor 3 inclined
Poor 4GHz, the frequency calibration result of the second obtained varactor 1, the second varactor 2 and the second varactor 3 are respectively：122GHz、
120GHz、118GHz.At this point, from the frequency calibration result of each second varactor, determine that target operating frequency 120GHz is corresponded to
Varactor for the second varactor 2, and the second varactor 2 is the varactor 9 in table 1, therefore varactor 9 is current time mesh
Mark the corresponding target varactor of working frequency.I.e. the present embodiment becomes by calibration, the corresponding targets of target operating frequency 120GHz
Varactor 11 before Rong Guancong becomes varactor 9, realizes the accurate alignment of VCO.
It can be seen from the above, the method for the present embodiment, only carries out school to each second varactor in VCO near the first varactor
Standard thereby reduces the data volume of calibration, further improves the calibration speed of VCO.
In a kind of possible realization method of the present embodiment, above-mentioned S103 can be specifically, by target operating frequency with
The frequency calibration result of each second varactor is compared one by one, determines corresponding second varactor of target operating frequency, will
Second varactor is as target varactor.
In the alternatively possible realization method of the present embodiment, above-mentioned S103 can be specifically, based on dichotomy, from
In the frequency calibration result of two varactors, determine corresponding second varactor of target operating frequency, using second varactor as
Target varactor.
For example, the frequency calibration result of each second varactor is ranked up from small to large (or arrange from big to small
Row), the frequency calibration result of maximum and the median of minimum frequency calibration result are obtained, by the median and target operation frequency
Rate is compared.When target operating frequency be located at median and maximum frequency calibration result between when, obtain median with most
The new median is compared by the median of big frequency calibration result with target operating frequency.Area is gradually reduced in this way
Between, until median be equal to target operating frequency when until.This method can be with the corresponding target of quick obtaining target operating frequency
Varactor further improves the calibration speed of VCO.
The transmitting frequency calibration method of VCO provided in an embodiment of the present invention, by measuring the practical center frequency of the first varactor,
Wherein the initial centre frequencies of the first varactor are the target operating frequency of VCO；If the practical center frequency of the first varactor with
There are deviations between initial centre frequencies, then the initial centre frequencies of the second varactor are calibrated according to deviation；Based on each
Frequency calibration is as a result, choose corresponding second varactor of target operating frequency as target varactor.That is the method for the present embodiment,
One-shot measurement, and the practical center frequency of the first varactor based on the measurement are only carried out to the practical center frequency of the first varactor
The deviation of rate and its initial centre frequencies, to the initial centre frequencies of each second varactor in VCO near the first varactor into
Row calibration, greatly reduces the number of measurement, improves the calibration speed of VCO, and then improve the working efficiency of PLL.
In the present embodiment, the difference of the initial centre frequencies in VCO between two neighboring varactor is identical, preset quantity
For the ratio between deviation and difference.
Specifically, as shown in Fig. 2, the difference of the initial centre frequencies in VCO between two neighboring varactor is identical, wherein
The preset quantity (being denoted as M) of second varactor is deviation (the i.e. practical center frequency and initial centre frequencies of the first varactor
Difference) and difference (i.e. the differences of initial centre frequencies in VCO between adjacent two varactor) ratio.For example, such as 1 institute of table
Show, the difference of the initial centre frequencies in VCO between adjacent two varactor is 2GHz, it is assumed that the practical center frequency of the first varactor
Rate and the deviation of initial centre frequencies are 10GHz, then preset quantity M is 10GHz/2GHz=5, if at this point, each varactor in VCO
According to initial centre frequencies from small to large equipment in parallel incremented by successively when, preceding 5 varactors that can choose the first varactor are made
For the second varactor.
It should be noted that M be positive integer, when the first varactor practical center frequency and initial centre frequencies it is inclined
When the ratio of the difference of initial centre frequencies in difference, with VCO between adjacent two varactor is decimal, then the integer-bit of decimal adds
1 is used as M values, such as when above-mentioned ratio is 2.3, that is, it is 3 to take M.
Optionally, above-mentioned preset quantity M can be more than the initial centre frequencies in deviation and VCO between adjacent two varactor
Difference ratio.For example, the ratio of the difference of initial centre frequencies in above-mentioned deviation and VCO between adjacent two varactor is
5, then M can be the positive integer more than 5.
In a kind of possible realization method of the present embodiment, if the deviation is more than 0, each second varactor
Initial centre frequencies be respectively less than the initial centre frequencies of first varactor.
Above-mentioned steps can include following two situation according to the difference of varactor set-up mode each in VCO：
The first situation, it is assumed that each varactor is passed successively from small to large according to initial centre frequencies in the VCO of the present embodiment
Increasing is arranged in parallel, if at this point, the practical center frequency of the first varactor and the deviation (i.e. difference) of initial centre frequencies are more than 0
When, then the initial centre frequencies of each second varactor of the present embodiment are respectively less than the initial centre frequencies of the first varactor.
Specifically, Fig. 4 is first position schematic diagram of second varactor in VCO in the embodiment of the present invention, such as Fig. 4 institutes
Show, each varactor in VCO is arranged in parallel according to initial centre frequencies are incremented by successively from small to large, when determining the first varactor
Practical center frequency is more than initial centre frequencies, i.e. the practical center frequency of the first varactor and the deviation of initial centre frequencies are big
When 0, illustrate the more respective initial centre frequencies increase of centre frequency of each varactor in current time VCO.At this point, target work
Working frequency can be fallen in the centre frequency of the preceding M varactor of the first varactor, therefore, obtain the preceding M change of the first varactor
Hold pipe (each varactor i.e. in Fig. 4 dotted line frames), this preceding M varactor is denoted as the second varactor, these the second varactors
Initial centre frequencies are respectively less than the initial centre frequencies of the first varactor.
For example, with reference to table 1, it is assumed that the initial centre frequencies and target operating frequency of the first varactor are
120GHz, the practical center frequency of the first varactor of current time is 124GHz, at this point, the practical center frequency of the first varactor
And the deviation of its initial centre frequencies is 4GHz>0.Due to each varactor in VCO according to initial centre frequencies from small to large according to
It is secondary to be incrementally arranged in parallel, it can determine that target operating frequency 120GHz can be fallen in the preceding M varactor of the first varactor at this time
In the centre frequency of some varactor, and then the preceding M varactor of the first varactor is obtained from each varactor of VCO, it will
This preceding M varactor is denoted as the second varactor, and the initial centre frequencies of these the second varactors are respectively less than the first of the first varactor
Beginning centre frequency.
The second situation, it is assumed that each varactor is passed successively from big to small according to initial centre frequencies in the VCO of the present embodiment
Subtract and be arranged in parallel, if at this point, the practical center frequency of the first varactor and the deviation (i.e. difference) of initial centre frequencies are more than 0
When, then the initial centre frequencies of each second varactor of the present embodiment are respectively less than the initial centre frequencies of the first varactor.
Specifically, Fig. 5 is second position schematic diagram of second varactor in VCO in the embodiment of the present invention, such as Fig. 5 institutes
Show, each varactor in VCO successively decreases successively from big to small according to initial centre frequencies to be arranged in parallel, when determining the first varactor
Practical center frequency is more than initial centre frequencies, i.e. the practical center frequency of the first varactor and the deviation of initial centre frequencies are big
When 0, illustrate the more respective initial centre frequencies increase of centre frequency of each varactor in current time VCO.At this point, target work
Working frequency can be fallen in the centre frequency of the rear M varactor of the first varactor, therefore, obtain the rear M change of the first varactor
Hold pipe (each varactor i.e. in Fig. 5 dotted line frames), this rear M varactor is denoted as the second varactor, these the second varactors
Initial centre frequencies are respectively less than the initial centre frequencies of the first varactor.
It illustrates, it is assumed that the initial centre frequencies and target operating frequency of the first varactor are 120GHz, when current
The practical center frequency for carving the first varactor is 124GHz, at this point, the practical center frequency of the first varactor and its initial center
The deviation of frequency is 4GHz>0.Since the parallel connection of successively decreasing successively from big to small according to initial centre frequencies of each varactor in VCO is set
It puts, thus may determine that target operating frequency 120GHz can fall some varactor in the rear M varactor of the first varactor
Centre frequency on, and then the rear M varactor of the first varactor is obtained from each varactor of VCO, by this rear M varactor
The second varactor is denoted as, the initial centre frequencies of these the second varactors are respectively less than the initial centre frequencies of the first varactor.
In the alternatively possible realization method of the present embodiment, if the deviation is less than 0, each second transfiguration
The initial centre frequencies of pipe are all higher than the initial centre frequencies of first varactor.
Above-mentioned steps can include following two situation according to the difference of varactor set-up mode each in VCO：
The first situation, it is assumed that each varactor is passed successively from small to large according to initial centre frequencies in the VCO of the present embodiment
Increasing is arranged in parallel, if at this point, the practical center frequency of the first varactor and the deviation (i.e. difference) of initial centre frequencies are less than 0
When, then the initial centre frequencies of each second varactor of the present embodiment are all higher than the initial centre frequencies of the first varactor.
Specifically, Fig. 6 is the third place schematic diagram of second varactor in VCO in the embodiment of the present invention, such as Fig. 6 institutes
Show, each varactor in VCO is arranged in parallel according to initial centre frequencies are incremented by successively from small to large, when determining the first varactor
Practical center frequency is less than initial centre frequencies, i.e. the practical center frequency of the first varactor and the deviation of initial centre frequencies are small
When 0, illustrate that the more respective initial centre frequencies of centre frequency of each varactor in current time VCO reduce.At this point, target work
Working frequency can be fallen in the centre frequency of the rear M varactor of the first varactor.Therefore, the rear M change of the first varactor is obtained
Hold pipe (each varactor i.e. in Fig. 6 dotted line frames), this rear M varactor is denoted as the second varactor, these the second varactors
Initial centre frequencies are all higher than the initial centre frequencies of the first varactor.
For example, with reference to table 1, it is assumed that the initial centre frequencies and target operating frequency of the first varactor are
120GHz, the practical center frequency of the first varactor of current time is 118GHz, at this point, the practical center frequency of the first varactor
And the deviation of its initial centre frequencies is -2GHz<0.Due to each varactor in VCO according to initial centre frequencies from small to large according to
It is secondary to be incrementally arranged in parallel, it can determine that target operating frequency 120GHz can be fallen in the rear M varactor of the first varactor at this time
In the centre frequency of some varactor, and then the rear M varactor of the first varactor is obtained from each varactor of VCO, it will
This rear M varactor is denoted as the second varactor, and the initial centre frequencies of these the second varactors are all higher than the first of the first varactor
Beginning centre frequency.
The second situation, it is assumed that each varactor is passed successively from big to small according to initial centre frequencies in the VCO of the present embodiment
Subtract and be arranged in parallel, if at this point, the practical center frequency of the first varactor and the deviation (i.e. difference) of initial centre frequencies are less than 0
When, then the initial centre frequencies of each second varactor of the present embodiment are all higher than the initial centre frequencies of the first varactor.
Specifically, Fig. 7 is fourth position view of second varactor in VCO in the embodiment of the present invention, such as Fig. 7 institutes
Show, each varactor in VCO successively decreases successively from big to small according to initial centre frequencies to be arranged in parallel, when determining the first varactor
Practical center frequency is less than initial centre frequencies, i.e. the practical center frequency of the first varactor and the deviation of initial centre frequencies are small
When 0, illustrate that the more respective initial centre frequencies of centre frequency of each varactor in current time VCO reduce.At this point, target work
Working frequency can be fallen in the centre frequency of the preceding M varactor of the first varactor, therefore, obtain the preceding M change of the first varactor
Hold pipe (each varactor i.e. in Fig. 7 dotted line frames), this preceding M varactor is denoted as the second varactor, these the second varactors
Initial centre frequencies are all higher than the initial centre frequencies of the first varactor.
It illustrates, it is assumed that the initial centre frequencies and target operating frequency of the first varactor are 120GHz, when current
The practical center frequency for carving the first varactor is 118GHz, at this point, the practical center frequency of the first varactor and its initial center
The deviation of frequency is -2GHz<0.Since the parallel connection of successively decreasing successively from big to small according to initial centre frequencies of each varactor in VCO is set
It puts, thus may determine that target operating frequency 120GHz can fall some varactor in the preceding M varactor of the first varactor
Centre frequency on, and then the preceding M varactor of the first varactor is obtained from each varactor of VCO, by this preceding M varactor
The second varactor is denoted as, the initial centre frequencies of these the second varactors are all higher than the initial centre frequencies of the first varactor.
In the present embodiment, above-mentioned S103 calibrates the initial centre frequencies of the second varactor according to the deviation,
Can specifically it include：
Respectively by the initial centre frequencies of each second varactor and the deviation and, as each second transfiguration
The frequency calibration result of pipe.
Specifically, the initial centre frequencies of each second varactor are obtained from table 1, then in the initial of each second varactor
Increase above-mentioned deviation in centre frequency, obtain each second varactor initial centre frequencies and deviation and, by these and work
Frequency calibration result for each second varactor.
For example, the practical center frequency of the first varactor and the deviation of initial centre frequencies are c, obtained according to the above method
M the second varactors are denoted as respectively：Second varactor a1, the second varactor a2... the second varactor aM, from table 1, obtain every
The initial centre frequencies of a second varactor, are denoted as successively：[f1、f2……fM].Then each second varactor it is initial in
Plus deviation c on frequency of heart, the frequency calibration of M the second varactors is obtained as a result, being followed successively by：[c+f1、c+f2……c+fM]。
It should be noted that if there is no inclined between the practical center frequency and initial centre frequencies of first varactor
Difference that is, when the practical center frequency of the first varactor is equal with initial centre frequencies, illustrates the centre frequency of the first varactor
Do not change, then can choose the first varactor as target varactor.
VCO frequency calibration method provided in an embodiment of the present invention, if the deviation is more than 0, it is determined that each second transfiguration
The initial centre frequencies of pipe are respectively less than the initial centre frequencies of the first varactor, if deviation is less than 0, it is determined that each second transfiguration
The initial centre frequencies of pipe are all higher than the initial centre frequencies of the first varactor, and then realize to the accurate true of the second varactor
It is fixed.Meanwhile respectively by the initial centre frequencies of each second varactor and deviation and, the frequency calibration as each second varactor
As a result, its calculating process is simple, the frequency calibration speed of VCO is further improved.
In another possible realization method of the present embodiment, in the VCO of the present embodiment between two neighboring varactor
Initial centre frequencies difference it is identical, twice for the ratio between deviation and difference of preset quantity, the i.e. preset quantity of the present embodiment
For 2M.
At this point it is possible to using the preceding M varactor and rear M varactor of the first varactor in VCO as the second varactor.
Since varactor each in VCO is arranged in parallel or from big to small according to initial centre frequencies are incremented by successively from small to large
Successively decrease successively and be arranged in parallel, there are during deviation when the practical center frequency and initial centre frequencies of the first varactor, you can determine
Target operating frequency is fallen in the corresponding centre frequency of some varactor near the first varactor, at this point it is possible to by
Multiple varactors near one varactor are as the second varactor.
Specifically, Fig. 8 is fiveth position view of second varactor in VCO in the embodiment of the present invention, such as Fig. 8 institutes
Show, centered on the first varactor, (each transfiguration i.e. in Fig. 8 dotted line frames of M varactor is respectively taken from the both sides of the first varactor
Pipe), i.e., the preceding M varactor of the first varactor is obtained from VCO as the second varactor, while after the first varactor of acquisition
M varactor obtains 2M the second varactors in this way as the second varactor.
The method of the present embodiment is ranked sequentially mode and first compared with above-described embodiment, to varactor each in VCO
The size of the practical center frequency of varactor and the deviation of initial centre frequencies is without judgement, directly two from the first varactor
Side respectively takes M varactor as the second varactor, and whole process is simpler.
After obtaining 2M the second varactors according to above-mentioned steps, the initial centre frequencies of each second varactor are obtained.It connects
It on the initial centre frequencies of each second varactor plus above-mentioned deviation, obtains the initial centre frequencies of each second varactor
And the deviation and, the frequency calibration result using these and as the second varactor.
For example, the deviation of the initial centre frequencies of the practical center frequency and the first varactor of the first varactor is c, first
Preceding M the second varactors of varactor are denoted as respectively：Second varactor a-1, the second varactor a-2... the second varactor a-M, the
Rear M the second varactors of one varactor are denoted as respectively：Second varactor a1, the second varactor a2... the second varactor aM.From
In table 1, the initial centre frequencies of each second varactor are obtained, are denoted as successively：[f-M……f-2、f-1、f1、f2……fM].It connects
The biasing difference c on the initial centre frequencies of each second varactor, the frequency calibration result for obtaining the second varactor is followed successively by：
[c+f-M……c+f-2、c+f-1、c+f1+c、c+f2……c+fM].Frequency calibration based on the second varactor is as a result, choose target
Corresponding second varactor of working frequency is as target varactor, such as target operating frequency is c+fM, c+fMCorresponding second becomes
Hold pipe for the second varactor aM, second varactor aMFor the corresponding target varactor of target operating frequency.
Fig. 9 is the structure diagram of VCO provided in an embodiment of the present invention, as shown in figure 9, the VCO100 packets of the present embodiment
It includes：Multiple varactors 10, memory 11 and processor 12, wherein, multiple varactors 10 are gradual according to initial centre frequencies respectively
The sequence increased or reduced is arranged in parallel successively, and for memory 11 for storing computer program, processor 12 is described for performing
Computer program, for performing the technical solution of the transmitting frequency calibration method of above-mentioned VCO, implementing principle and technical effect are similar,
Details are not described herein again.
Figure 10 is the structure diagram of electronic equipment provided in an embodiment of the present invention, as shown in Figure 10, the electricity of the present embodiment
Sub- equipment 200 includes：VCO100 as shown in Figure 9.
When being realized in the embodiment of the present invention at least part function of the transmitting frequency calibration method of VCO by software, this
Inventive embodiments also provide a kind of computer storage media, computer storage media for save as it is above-mentioned to VCO into line frequency
The computer software instructions of calibration, when run on a computer so that computer can be performed in above method embodiment
The transmitting frequency calibration method of various possible VCO.When loading on computers and performing the computer executed instructions, can all or
It partly generates according to the flow or function described in the embodiment of the present invention.The computer instruction can be stored in computer storage
It is transmitted in medium or from a computer storage media to another computer storage media, the transmission can pass through nothing
Line (such as cellular communication, infrared, short-distance wireless, microwave etc.) mode is to another web-site, computer, server or number
It is transmitted according to center.The computer storage media can be that any usable medium that computer can access either includes
The data storage devices such as server, data center that one or more usable mediums integrate.The usable medium can be magnetic
Medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as SSD) etc..
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of transmitting frequency calibration method of VCO, which is characterized in that including：
The practical center frequency of the first varactor is measured, wherein, the initial centre frequencies of first varactor are the target of VCO
Working frequency；
If there are deviation between the practical center frequency and initial centre frequencies of first varactor, according to the deviation pair
The initial centre frequencies of second varactor are calibrated, wherein, the varactor in the VCO gradually increases according to initial centre frequencies
Sequence that is big or reducing is arranged in parallel successively, and second varactor is to be set near first varactor in the VCO
Preset quantity varactor；
Based on each frequency calibration as a result, choosing corresponding second varactor of the target operating frequency as target varactor.
If 2. according to the method described in claim 1, it is characterized in that, the deviation is more than 0, each second varactor
Initial centre frequencies be respectively less than the initial centre frequencies of first varactor.
If 3. according to the method described in claim 1, it is characterized in that, the deviation is less than 0, each second varactor
Initial centre frequencies be all higher than the initial centre frequencies of first varactor.
4. method according to any one of claim 1-3, which is characterized in that in the VCO two neighboring varactor it
Between initial centre frequencies difference it is identical, the preset quantity be the ratio between the deviation and the difference.
5. according to the method described in claim 1, it is characterized in that, it is described according to the deviation to the second varactor it is initial in
Frequency of heart is calibrated, and is specifically included：
Respectively by the initial centre frequencies of each second varactor and the deviation and, as each second varactor
Frequency calibration result.
6. according to the method described in claim 1, it is characterized in that, the method further includes：If the reality of first varactor
There is no deviations between border centre frequency and initial centre frequencies, then choose first varactor as target varactor.
7. a kind of VCO, which is characterized in that including：
Multiple varactors, the sequence gradually increased or reduced according to initial centre frequencies respectively are arranged in parallel successively；
Memory, for storing computer program；
Processor, for performing the computer program, to realize the frequency of the VCO as described in any one of claim 1-6
Calibration method.
8. a kind of electronic equipment, which is characterized in that including VCO as claimed in claim 7.
9. a kind of computer storage media, which is characterized in that computer program, the computer journey are stored in the storage medium
Sequence realizes the transmitting frequency calibration method of the VCO described in any one of claim 1-6 when being executed.
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