CN110320338A - A kind of carrier signal driving source and carrier signal synthetic method - Google Patents
A kind of carrier signal driving source and carrier signal synthetic method Download PDFInfo
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Abstract
The invention discloses a kind of carrier signal driving source and carrier signal synthetic methods, it include: that module occurs for carrier signal, for being handled through frequency multiplication, amplifier and DC voltage bias low frequency signal, high-frequency signal is handled through amplifier, treated low frequency signal and high-frequency signal are synthesized into a road carrier signal；Module occurs for envelope signal, after and phasing back phase adjusted to low frequency signal processing, obtains the servo-actuated envelope signal of 180 ° of two-way phase phase difference.The stability with higher for the signal that the present invention is exported has enough output powers, can satisfy the fields such as non-destructive testing to the height frequency requirement of excitation source signal.
Description
Technical field
The present invention relates to signal driving source technical fields, and in particular to a kind of carrier signal driving source and carrier signal are closed
At method.
Background technique
Common lossless detection method has vortex nothing in special safety equipment detection and oil-gas pipeline defects detection field
Damage detection method, conventional Ultrasound detection method, electromagnetic acoustic detection method, flux-leakage detection method etc..In a variety of non-destructive testing sides
In method, signal driving source is all extremely critical component part.It is more in the detection signal of signal driving source output at this stage
Number signal components are single, can not effectively detect defect, or there are the signal of Multiple components but detection range and depth
Not enough, penetrability is not strong for degree.In no-dig technique pipe detection field, original detection signal driving source is extremely micro- to defect qualitative
It is weak.In addition, other kinds of multi-frequency testing means at this stage are not strong to the duct penetration power containing clad, to defect recognition
Property it is not high, easily generation missing inspection the case where, and single multiple-frequency signal can only be exported, can not change the signal of multiple-frequency signal at
Point.
Summary of the invention
Aiming at the shortcomings existing in the above problems, the present invention provides a kind of carrier signal driving source and carrier signal
Synthetic method.
The invention discloses a kind of carrier signal driving sources, comprising:
Module occurs for carrier signal, for being handled through frequency multiplication, amplifier and DC voltage bias low frequency signal, believes high frequency
It number is handled through amplifier, treated low frequency signal and high-frequency signal is synthesized into a road carrier signal；
Module occurs for envelope signal, after and phasing back phase adjusted to low frequency signal processing, obtains two
The servo-actuated envelope signal of 180 ° of road phase phase difference.
As a further improvement of the present invention, further includes:
Light-coupled isolation module carries out light-coupled isolation for being servo-actuated envelope signal to a road carrier signal and two-way；
Power amplifier module, for the road carrier signal and the servo-actuated envelope signal progress power of two-way after light-coupled isolation
Amplification.
As a further improvement of the present invention, the carrier signal generation module includes:
Module occurs for low frequency signal, for generating low frequency signal；
Times frequency module generates frequency multiplication low frequency signal for carrying out frequency frequency multiplication to the low frequency signal；
Low frequency amplifier module generates amplification low frequency signal for carrying out amplitude amplification to the frequency multiplication low frequency signal；
Direct current signal module, for generating d. c. voltage signal；
Low frequency component synthesis module is produced for carrying out add operation to the amplification low frequency signal and d. c. voltage signal
Low frequency signal after raw direct current biasing；
Module occurs for high-frequency signal, for generating high-frequency signal；
High frequency amplifier module generates amplification high-frequency signal for carrying out amplitude amplification to the high-frequency signal；
Carrier signal synthesis module, for the low frequency signal and amplification high-frequency signal progress multiplication after the direct current biasing
Operation generates the carrier signal without envelope.
As a further improvement of the present invention, the low frequency signal and the height that module generates occur for the low frequency signal
The amplitude for the high-frequency signal that frequency signal generating module generates is identical, frequency is different；
The amplitude amplification factor of the low frequency amplifier module is less than the amplitude amplification factor of the high frequency amplifier module.
As a further improvement of the present invention, the amplitude amplification factor of the low frequency amplifier module is the high frequency amplifier mould
0.75 times of the amplitude amplification factor of block；
Described times of frequency module is 2 times to the frequency amplification factor of the low frequency signal.
As a further improvement of the present invention, the high-frequency signal occurs module and passes through the control to high-frequency signal pio chip
Pin A0 and A1 low and high level processed, the high-frequency signal for controlling generation is sine wave or impulse wave.
As a further improvement of the present invention, the carrier signal synthesis module generates the calculating of the carrier signal without envelope
Formula are as follows:
UA(t)=Um(1+ma cosΩt)cosWct
In formula: UAIt (t) is outgoing carrier signal, maFor amplitude modulation coefficient, uc(t)=Um cosWcT is high-frequency signal, uΩ(t)
=Um cosΩtcosWcT- is low-frequency modulation signal.
As a further improvement of the present invention, module occurs for the envelope signal, comprising:
Module occurs for the low frequency signal, for generating the low frequency signal；
Signal phase adjusts module, for carrying out phase adjustment, the phase adjustment low frequency letter of generation to the low frequency signal
Number it is divided into two-way, the phase adjustment low frequency signal as being servo-actuated envelope signal all the way all the way；
Signal phase reversal block carries out phasing back for the phase adjustment low frequency signal described in another way, generates phase
The another way that 180 ° of phase difference is servo-actuated envelope signal.
The invention also discloses a kind of carrier signal synthetic methods of carrier signal driving source, comprising:
Generate low frequency signal；
Frequency frequency multiplication is carried out to the low frequency signal, generates frequency multiplication low frequency signal；
Amplitude amplification is carried out to the frequency multiplication low frequency signal, generates amplification low frequency signal；
Generate d. c. voltage signal；
Add operation is carried out to the amplification low frequency signal and d. c. voltage signal, the low frequency letter after generating direct current biasing
Number；
High-frequency signal is generated, the high-frequency signal is identical as the amplitude of the low frequency signal, frequency is different；
Amplitude amplification is carried out to the high-frequency signal, generates amplification high-frequency signal, the amplitude of the low frequency amplifier module is put
Big multiple is less than the amplitude amplification factor of the high frequency amplifier module；
To the low frequency signal after the direct current biasing and amplify high-frequency signal progress multiplying, generates all the way without envelope
Carrier signal；
Phase adjustment is carried out to the low frequency signal, the phase adjustment low frequency signal of generation is divided into two-way, all the way the phase
Position adjustment low frequency signal is as servo-actuated envelope signal all the way；
The phase adjustment low frequency signal described in another way carries out phasing back, and it is servo-actuated to generate 180 ° of phase phase difference of another way
Envelope signal.
As a further improvement of the present invention, further includes:
To the carrier signal and the servo-actuated envelope signal progress light-coupled isolation of two-way all the way without envelope；
To the carrier signal without envelope all the way and the servo-actuated envelope signal progress power amplification of two-way after light-coupled isolation, realize
Two-way follow-up signal always envelope carrier signal be mutually correlativity signal output.
Compared with prior art, the invention has the benefit that
1, carrier signal driving source of the invention includes two-way envelope follow-up signal and a road carrier signal.Two-way envelope letter
Number and a road carrier signal collectively constitute suitable steel pipe non-destructive testing, there is stronger penetration capacity and flaw indication to take
Detection pumping signal with ability；
2, combining closely for three kinds of signals can be completed only by adusting the frequency of carrier signal low frequency component in the present invention, makes
Envelope is over the carrier signal always for two-way envelope signal；
3, the low and high level that by adjusting high-frequency signal control the pin A0 and A1 of chip occur for the present invention, exportable sine
Wave and impulse wave can be respectively synthesized sinusoidal carrier signal and pulse carrier signal；
4, carrier signal driving source of the invention utilizes in such a way that signal generating module is isolated with power amplifier module
Optocoupler partition method, to prevent in use since overload is likely to result in signal generating module
The case where being damaged.
Detailed description of the invention
Fig. 1 is the frame diagram of carrier signal driving source disclosed in an embodiment of the present invention；
Fig. 2 is the overall circuit figure that module occurs for carrier signal disclosed in an embodiment of the present invention；
Fig. 3 is the switching circuit figure of sinusoidal carrier signal and pulse carrier signal disclosed in an embodiment of the present invention；
Fig. 4 is the circuit diagram of direct current signal module disclosed in an embodiment of the present invention；
Fig. 5 is the circuit diagram of carrier signal synthesis module disclosed in an embodiment of the present invention；
Fig. 6 is the circuit diagram that signal phase disclosed in an embodiment of the present invention adjusts module；
Fig. 7 is the circuit diagram of light-coupled isolation module disclosed in an embodiment of the present invention；
Fig. 8 is the circuit diagram of power amplifier module disclosed in an embodiment of the present invention；
Fig. 9 is the circuit diagram of power regulator module disclosed in an embodiment of the present invention.
In figure:
10, module occurs for carrier signal；11, module occurs for low frequency signal；12, times frequency module；13, low frequency amplifier module；
14, direct current signal module；15, low frequency component synthesis module；16, module occurs for high-frequency signal；17, high frequency amplifier module；18, it carries
Wave signal synthesizing module；20, module occurs for envelope signal；21, signal phase reversal block；22, signal phase adjusts module；
30, light-coupled isolation module；40, power amplifier module.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention is described in further detail with reference to the accompanying drawing:
As shown in Figure 1, the present invention provides a kind of carrier signal driving source, comprising: module 10, envelope letter occur for carrier signal
Number module 20, light-coupled isolation module 30 and power amplifier module 40 occurs；Wherein:
Module 10 occurs for carrier signal of the invention, for low frequency signal through frequency multiplication, amplifier and DC voltage bias at
Reason, high-frequency signal is handled through amplifier, and treated low frequency signal and high-frequency signal are synthesized a road carrier signal.
As shown in Fig. 2, to realize that above-mentioned function, carrier signal of the invention occur module 10 and specifically include: low frequency signal
Module 11, times frequency module 12, low frequency amplifier module 13, direct current signal module 14, low frequency component synthesis module 15, high frequency letter occurs
Number module 16, high frequency amplifier module 17 and carrier signal synthesis module 18 occurs；Module 11 and times frequency module occur for low frequency signal
12 are connected, and times frequency module 12 is connected with low frequency amplifier module 13, and low frequency amplifier module 13 and direct current signal module 14 and low frequency are divided
It measures synthesis module 15 to be connected, high-frequency signal occurs module 16 and is connected with high frequency amplifier module 17,15 He of low frequency component synthesis module
High frequency amplifier module 17 is connected with carrier signal synthesis module 18；Wherein:
Module 11 occurs for low frequency signal of the invention, for generating low frequency signal, the amplitude and high-frequency signal of low frequency signal
The amplitude that module 16 occurs is consistent, but frequency is inconsistent；As shown in figure 9, be the design for signal occurring onboard power unit,
Power supply partial circuit is as shown in the figure.It, can be by power supply electricity according to supply voltage type needed for electronic component each in circuit
Pressure source is divided into 4 voltage domains, i.e. ± 32V, ± 15V, ± 5V, 3.3V.3 kinds below have mainly been used in signal generation point,
This section mainly introduces the part.The input voltage range of signal generating module circuit board is ± 15V~± 36V, and pressure stabilizing is needed to arrive
±15V,±5V,3.3V.As shown in figure 3, external power supply supplies to be electrically accessed three road connecting terminals, by entering bridge-type after six foot controls
Rectification circuit.Enter ± 15V the voltage regulator circuit being made of chip IC 1 and IC2 later.After pressure stabilizing generation ± 15V voltage, remove
Except the circuit use required for line related voltage, pressure stabilizing is carried out by ± 5V the circuit that chip IC 3 and IC4 form again.
Specific connection type is that input voltage is connect on the left of the filter circuit being made of diode D1, D2, D3, D4, output termination IC1 and
The input terminal of IC2, what is be in parallel with voltage stabilizing chip is two pairs of polar capacitors and a pair of nonpolar capacitor.IC1 and IC2 output end point
The input terminal of IC3 and IC4 are not connect, while IC3 and IC4 is in parallel with two pairs of nonpolar capacitors and a pair of of polar capacitor.IC3 and
The output end of IC4 chip output -5V and+5V voltage respectively.Equally, the voltage of positive and negative 5V removes the electricity for being fed with associated voltage requirement
Except the use of road, voltage regulator circuit pressure stabilizing that+5V voltage input is made of voltage stabilizing element D1 to 3.3V.
Times frequency module 12 of the invention carries out frequency times for the low frequency signal that module 11 generates to occur to low frequency signal
Frequently, frequency multiplication low frequency signal is generated；Wherein, the present invention times frequency module 12 is 2 times to the frequency amplification factor of low frequency signal；
Low frequency amplifier module 13 of the invention carries out amplitude amplification for the frequency multiplication low frequency signal to frequency module 12 again, produces
Raw amplification low frequency signal；Wherein, modulation carrier signal is generated, the low-frequency carrier component and high frequency wave component width of the signal are needed
Value has certain proportionate relationship, guarantees that the carrier signal generated has good modulation waveform.Original low frequency signal with it is original
High frequency waves signal amplitude is consistent, and the amplification coefficient of original low frequency signal and the amplification coefficient of original highband signal are inconsistent, and
The amplification factor of times frequency module 12 of the invention must be made to be less than the amplitude amplification factor of high frequency amplifier module；It is preferred that low frequency is transported
The amplitude amplification factor of amplification module is 0.75 times of the amplitude amplification factor of high frequency amplifier module；
Direct current signal module 14 of the invention, for generating d. c. voltage signal；Wherein, as shown in figure 4, of the invention is straight
Stream signaling module 14 realizes the output of 5V voltage input, 3.3V voltage ,+5V input access resistance R1, the K of resistance R1 connection D1
End, while being linked into R2；The end R of D1 is coupled with resistance R2 and R3, meanwhile, the two resistance are also connected in series.The end A of D1
It is grounded with the end resistance R.
Low frequency component synthesis module 15 of the invention, for carrying out addition fortune to amplification low frequency signal and d. c. voltage signal
It calculates, the low frequency signal after generating direct current biasing；
Module 16 occurs for high-frequency signal of the invention, for generating high-frequency signal；Wherein, as shown in figure 3, the present invention passes through
To control pin A0 and the A1 low and high level of high-frequency signal pio chip IC14, high-frequency signal pio chip IC14 output can control
Sine wave or impulse wave；
High frequency amplifier module 17 of the invention generates amplification high-frequency signal for carrying out amplitude amplification to high-frequency signal；
Carrier signal synthesis module 18 of the invention, for after direct current biasing low frequency signal and amplification high-frequency signal into
Row multiplying generates the carrier signal without envelope；Wherein, the calculation formula of the carrier signal without envelope is generated are as follows:
UA(t)=Um(1+ma cosΩt)cosWct
In formula: UAIt (t) is outgoing carrier signal, maFor amplitude modulation coefficient, uc(t)=Um cosWcT is high-frequency signal, when
cosWcWhen t is constant, high-frequency signal is square-wave signal；uΩ(t)=Um cosΩtcosWcT is low-frequency modulation signal.
The output mode that module occurs by adjusting high-frequency signal, converts the output waveform form of high-frequency signal, can be defeated
Sinusoidal carrier signal and pulse carrier signal out.When high-frequency signal is sinusoidal signal, then output is sinusoidal carrier signal.Work as height
When frequency signal is pulse square wave signal, then output is pulse carrier signal.
As shown in figure 5, IC5 is modulation main control chip in carrier signal synthesis module 18 of the invention, low frequency and direct current are believed
Number mixed signal access chip low frequency input terminal.High-frequency signal is input to high frequency input terminal, power supply power supply use ± 5V's
Power supply mode.In order to guarantee that the carrier signal being modulated into has lesser burr and more stable signal shape, power supply is given
In addition filter capacitor.Power supply is connected in parallel two nonpolar capacitors respectively and a polar capacitor is powered power supply filter
Wave.Adding input connecting resistance R4, the R4 other end of IC5 chip is grounded by output par, c, meanwhile, the part by resistance R3 and
Capacitor C7 is connected to output end, and output terminates to one end of capacitor C8.The carrier signal of the other end output synthesis of capacitor C8.
Further, for low frequency, high-frequency signal occur module, it is desirable to provide be single channel sinusoidal signal.Sinusoidal signal
Stability directly influence synthesis after carrier signal signal quality.Meanwhile in order to enhance the penetrability of signal, it is desirable that defeated
Carrier signal low frequency component frequency out can be enough low.In addition, in order to improve the versatility of signal generation, and meet nothing
Detection field is damaged under different operating conditions and different test objects to the diversity requirements of detection signal, it is desirable that mould occurs for sinusoidal signal
Block can not only export sinusoidal signal as the source signal of carrier signal, can also export square-wave signal, triangular signal etc.
Multi-signal.In use, it also often needs that the duty ratio of signal is adjusted, it requires that signal generating module is also wanted
The function of having duty cycle adjustment.Since the stability of the source signal of signal generating module output has very the quality of carrier signal
Big influence, so also proposed very high requirement to the stable output signal of signal generating module.
Module 20 occurs for envelope signal of the invention, after and phasing back phase adjusted to low frequency signal processing,
Obtain the servo-actuated envelope signal of 180 ° of two-way phase phase difference.
To realize above-mentioned function, envelope signal of the invention occur module 20 specifically include low frequency signal occur module 11,
Signal phase reversal block 21 and signal phase adjust module 22；Low frequency signal occur module 11 with signal phase reversal block
21 are connected, and signal phase reversal block 21 is connected with signal phase adjustment module 22；Wherein:
Module 11 occurs for low frequency signal of the invention, for generating low frequency signal；
Signal phase of the invention adjusts module 21, for carrying out phase adjustment, the phase adjustment of generation to low frequency signal
Low frequency signal is divided into two-way, and phase adjustment low frequency signal is as servo-actuated envelope signal all the way all the way；
Signal phase reversal block 22 of the invention, for carrying out phasing back to another way phase adjustment low frequency signal,
It generates 180 ° of phase phase difference of another way and is servo-actuated envelope signal；
As shown in fig. 6, original low frequency signal, which occurs in module 20, for envelope signal of the invention is linked into fortune by resistance R1
The reverse input end of IC6 is put, meanwhile, the non-inverting input terminal of amplifier IC6 is linked by potentiometer R2.In R2 with amplifier with mutually defeated
Enter and is parallel with nonpolar capacitor C1 between end.The output end of amplifier divides two-way, accesses isolation module all the way and is exported, is connect all the way
Enter in the inverter cricuit formed to operational amplifier；Amplifier use ± 5V dual power supply, while feedback resistance R3 is added, it exports
Part exports the signal after phase shift by resistance R4；It wherein, is two-way envelope by the frequency of the low frequency component of envelope carrier signal
Twice of signal frequency.Its signal generating source is same occurring source.When frequency of carrier signal changes, two-way envelope signal
Frequency also occur equally to change, track follows envelope carrier signal always, realizes the output of two-way envelope signal.
Light-coupled isolation module 30 of the invention, for a road carrier signal and two-way be servo-actuated envelope signal carry out optocoupler every
From；Wherein, light-coupled isolation module 30 of the invention be three independent modules, respectively with carrier signal synthesis module 18, letter
Number phase adjusting module 21 is connected with the output end of signal phase reversal block 22.Wherein, as shown in fig. 7, the linear light used
Coupling isolating chip is that IC13 is security isolation main control chip, and analog input signal accesses the non-inverting input terminal of operation amplifier IC11,
The output end of IC11 is linked into the input terminal of light-coupled isolation chip by resistance R1.Pin of the termination light of capacitor C1 every chip
4, the output end of another termination IC11 constitutes negative-feedback.Light is analog output end every the pin 8 of chip IC 13, accesses operation
The non-inverting input terminal of amplifier IC12.Resistance R2 mono- terminates non-inverting input terminal, one end ground connection.Light is every chip use+5V single supply
Power supply.The output end of IC12 chip directly connects power amplifier input.
Power amplifier module 40 of the invention, for the road carrier signal and the servo-actuated envelope letter of two-way after light-coupled isolation
Number carry out power amplification；Wherein, power amplifier module 40 of the invention is three independent modules, with light-coupled isolation module 30
It is corresponding to be connected；Wherein, it is illustrated in figure 8 power amplifier module, which is to realize the pith of signal driving source function.Such as
Shown in Fig. 8, input signal is connected to one end of resistance R1, and another fixing end for terminating to slide rheostat R2 of R1 slides variable resistance
The sliding of device R2 terminates to one end of fixed value resistance R3.The other end fixing end of R2 is grounded.Another termination slide rheostat of R3
The fixing end of R4.The sliding of R4 terminates fixed value resistance R6, and be coupled in parallel to R6 with R4 sliding end is two nonpolar capacitors.It is non-
The other end of polar capacitor is coupled with two fixing ends of R4.R6 is linked into the sliding end of slide rheostat R8.Two of R8
Fixing end is coupled with two nonpolar constant volume C3 and C4, while the sliding end of R8 and fixed value resistance R7 are connected in parallel to the one of R6
End.R7 is connected to the positive ends of polar capacitor C5, and the cathode of R5 polar capacitor terminates to one end of fixed value resistance R9.R9's is another
End is linked into the positive input of power amplifier chip IC7.Power amplifier chip uses dual power supply ± 36V powering mode.Output
Part carries out passive filtering using resistance R13 and capacitor C7.
Needing after carrier signal and the output of two-way envelope signal could access power amplification module by light-coupled isolation module.
Because the output signal limited at the beginning of design is sinusoidal signal, light-coupled isolation should select linear exchange light-coupled isolation.
The present invention provides a kind of carrier signal synthetic method, comprising:
Generate low frequency signal；
Frequency frequency multiplication is carried out to low frequency signal, generates frequency multiplication low frequency signal；
Amplitude amplification is carried out to frequency multiplication low frequency signal, generates amplification low frequency signal；
Generate d. c. voltage signal；
Add operation is carried out to amplification low frequency signal and d. c. voltage signal, the low frequency signal after generating direct current biasing；
High-frequency signal is generated, high-frequency signal is identical as the amplitude of low frequency signal, frequency is different；
Amplitude amplification is carried out to high-frequency signal, generates amplification high-frequency signal, the amplitude amplification factor of low frequency amplifier module is small
In the amplitude amplification factor of high frequency amplifier module；
To the low frequency signal after direct current biasing and amplify high-frequency signal progress multiplying, generates all the way without the carrier wave of envelope
Signal；
Phase adjustment is carried out to low frequency signal, the phase adjustment low frequency signal of generation is divided into two-way, and phase adjustment is low all the way
Frequency signal is as servo-actuated envelope signal all the way；
Phasing back is carried out to another way phase adjustment low frequency signal, 180 ° of phase phase difference of another way is generated and is servo-actuated envelope
Signal.
To the carrier signal and the servo-actuated envelope signal progress light-coupled isolation of two-way all the way without envelope；
To the carrier signal without envelope all the way and the servo-actuated envelope signal progress power amplification of two-way after light-coupled isolation, realize
Two-way follow-up signal always envelope carrier signal be mutually correlativity signal output.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of carrier signal driving source characterized by comprising
Module occurs for carrier signal, for being handled through frequency multiplication, amplifier and DC voltage bias low frequency signal, passes through to high-frequency signal
Treated low frequency signal and high-frequency signal are synthesized a road carrier signal by amplifier processing；
Module occurs for envelope signal, after and phasing back phase adjusted to low frequency signal processing, obtains two-way phase
180 ° of phase difference of servo-actuated envelope signal.
2. carrier signal driving source as described in claim 1, which is characterized in that further include:
Light-coupled isolation module carries out light-coupled isolation for being servo-actuated envelope signal to a road carrier signal and two-way；
Power amplifier module, for after light-coupled isolation a road carrier signal and two-way be servo-actuated envelope signal carry out power put
Greatly.
3. carrier signal driving source as described in claim 1, which is characterized in that the carrier signal occurs module and includes:
Module occurs for low frequency signal, for generating low frequency signal；
Times frequency module generates frequency multiplication low frequency signal for carrying out frequency frequency multiplication to the low frequency signal；
Low frequency amplifier module generates amplification low frequency signal for carrying out amplitude amplification to the frequency multiplication low frequency signal；
Direct current signal module, for generating d. c. voltage signal；
Low frequency component synthesis module generates straight for carrying out add operation to the amplification low frequency signal and d. c. voltage signal
Low frequency signal after stream biasing；
Module occurs for high-frequency signal, for generating high-frequency signal；
High frequency amplifier module generates amplification high-frequency signal for carrying out amplitude amplification to the high-frequency signal；
Carrier signal synthesis module, for the low frequency signal and amplification high-frequency signal progress multiplication fortune after the direct current biasing
It calculates, generates the carrier signal without envelope.
4. carrier signal driving source as claimed in claim 3, which is characterized in that the institute that module generates occurs for the low frequency signal
State low frequency signal and the high-frequency signal occur the high-frequency signal that module generates amplitude is identical, frequency is different；
The amplitude amplification factor of the low frequency amplifier module is less than the amplitude amplification factor of the high frequency amplifier module.
5. carrier signal driving source as claimed in claim 4, which is characterized in that the amplitude times magnification of the low frequency amplifier module
Number is 0.75 times of the amplitude amplification factor of the high frequency amplifier module；
Described times of frequency module is 2 times to the frequency amplification factor of the low frequency signal.
6. carrier signal driving source as claimed in claim 3, which is characterized in that the high-frequency signal occurs module and passes through to height
Control pin A0 and the A1 low and high level of frequency signal pio chip, the high-frequency signal for controlling generation is sine wave or pulse
Wave.
7. carrier signal driving source as claimed in claim 3, which is characterized in that the carrier signal synthesis module is generated without packet
The calculation formula of the carrier signal of network are as follows:
UA(t)=Um(1+ma cosΩt)cosWct
In formula: UAIt (t) is outgoing carrier signal, maFor amplitude modulation coefficient, uc(t)=Um cosWcT is high-frequency signal, uΩ(t)=Um
cosΩt cosWcT is low-frequency modulation signal.
8. the carrier signal driving source as described in right wants 3, which is characterized in that module occurs for the envelope signal, comprising:
Module occurs for the low frequency signal, for generating the low frequency signal；
Signal phase adjusts module, for carrying out phase adjustment, the phase adjustment low frequency signal point of generation to the low frequency signal
For two-way, the phase adjustment low frequency signal is as servo-actuated envelope signal all the way all the way；
Signal phase reversal block carries out phasing back for the phase adjustment low frequency signal described in another way, generates phase phase
Poor 180 ° of another way is servo-actuated envelope signal.
9. a kind of carrier signal synthetic method based on carrier signal driving source such as of any of claims 1-8,
It is characterized in that, comprising:
Generate low frequency signal；
Frequency frequency multiplication is carried out to the low frequency signal, generates frequency multiplication low frequency signal；
Amplitude amplification is carried out to the frequency multiplication low frequency signal, generates amplification low frequency signal；
Generate d. c. voltage signal；
Add operation is carried out to the amplification low frequency signal and d. c. voltage signal, the low frequency signal after generating direct current biasing；
High-frequency signal is generated, the high-frequency signal is identical as the amplitude of the low frequency signal, frequency is different；
Amplitude amplification is carried out to the high-frequency signal, generates amplification high-frequency signal, the amplitude times magnification of the low frequency amplifier module
Number is less than the amplitude amplification factor of the high frequency amplifier module；
To the low frequency signal after the direct current biasing and amplify high-frequency signal progress multiplying, generates all the way without the carrier wave of envelope
Signal；
Phase adjustment is carried out to the low frequency signal, the phase adjustment low frequency signal of generation is divided into two-way, all the way the phase tune
Whole low frequency signal is as servo-actuated envelope signal all the way；
The phase adjustment low frequency signal described in another way carries out phasing back, generates 180 ° of phase phase difference of another way and is servo-actuated envelope
Signal.
10. carrier signal synthetic method as claimed in claim 9, which is characterized in that further include:
To the carrier signal and the servo-actuated envelope signal progress light-coupled isolation of two-way all the way without envelope；
To the carrier signal without envelope all the way and the servo-actuated envelope signal progress power amplification of two-way after light-coupled isolation, two-way is realized
Follow-up signal always envelope carrier signal be mutually correlativity signal output.
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