CN106936390A - A kind of upconverter of SCM Based intelligent power regulation - Google Patents
A kind of upconverter of SCM Based intelligent power regulation Download PDFInfo
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- CN106936390A CN106936390A CN201710160421.4A CN201710160421A CN106936390A CN 106936390 A CN106936390 A CN 106936390A CN 201710160421 A CN201710160421 A CN 201710160421A CN 106936390 A CN106936390 A CN 106936390A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
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Abstract
The upconverter of the SCM Based intelligent power regulation that the present invention is provided, including signal input apparatus, power detection device, multi-stage Low Noise Amplifier, single-chip microcomputer, the first frequency mixer, bandpass filter, the first local oscillator, the second local oscillator, signal noise detection means, the second frequency mixer and multi-stage power amplifier；Signal input apparatus are connected with power detection device and low-noise amplifier respectively；First frequency mixer is connected with low-noise amplifier, bandpass filter, the first local oscillator and signal noise detection means respectively；Second frequency mixer is connected with signal noise detection means, multi-stage power amplifier, bandpass filter and the second local oscillator respectively, and single-chip microcomputer is central controller.Beneficial effect of the present invention is compared with the prior art：It can make stable output power according to the different gains for changing multi-stage Low Noise Amplifier and multi-stage power amplifier of input signal power.
Description
Technical field
The present invention relates to communication technical field, and in particular to a kind of up-conversion of SCM Based intelligent power regulation
Device.
Background technology
The shortcoming that upconverter of the prior art is primarily present is exactly, its own power output it is non-adjustable, it is impossible to
The watt level of signal input part input signal and adjust the gain size of itself, therefore the steady of power output cannot be ensured
It is fixed.In other words, upconverter of the prior art cannot ensure signal power output can effectively with required for receiving terminal
Power bracket matching, its consequence for directly resulting in is exactly, user as receiving terminal, the input signal for receiving it is unstable,
The strong influence reception of user, more likely because signal input power it is too low, cause the appearance of receiving terminal to hand over
Adjust the phenomenons such as distortion.
In view of drawbacks described above, creator of the present invention passes through prolonged research and practice obtains the present invention finally.
The content of the invention
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, there is provided a kind of SCM Based intelligence
The upconverter of power adjusting, it is characterised in that including signal input apparatus, power detection device, multi-stage Low Noise Amplifier,
Single-chip microcomputer, the first frequency mixer, bandpass filter, the first local oscillator, the second local oscillator, signal noise detection means,
Second frequency mixer and multi-stage power amplifier；The signal input apparatus, signal X (t) of frequency conversion, the signal are treated for being input into
Input unit is connected with the power detection device and the low-noise amplifier respectively；First frequency mixer respectively with it is described
The electrical connection of low-noise amplifier, the bandpass filter, first local oscillator and the signal noise detection means；Institute
State the second frequency mixer respectively with the signal noise detection means, the multi-stage power amplifier, the bandpass filter and institute
State the electrical connection of the second local oscillator；The single-chip microcomputer amplifies with the signal noise detection means, the multiple power levels respectively
The electrical connection of device, the multi-stage Low Noise Amplifier and the power detection device.
Preferably, the multi-stage Low Noise Amplifier includes that the coms of multi-stage cascade is managed；The multi-stage power amplifier bag
Include the coms pipes of multi-stage cascade.
Preferably, the signal noise detection means, the noise coefficient D for detecting the first mixed frequency signal Y ' (t)aWith
The noise coefficient D of two mixed frequency signals Z ' (t)b, the first mixed frequency signal Y ' (t) noise coefficient DaComputing formula be：
Wherein, DaIt is the noise coefficient of first mixed frequency signal Y ' (t), M is represented in first mixed frequency signal Y ' (t)
The quantity of subcarrier, RMT () is the subcarrier in first mixed frequency signal Y ' (t)；
The noise coefficient D of second mixed frequency signal Z ' (t)bComputing formula：
Wherein, DbIt is the noise coefficient of second mixed frequency signal Z ' (t), M is represented in second mixed frequency signal Z ' (t)
The quantity of subcarrier, NMT () is the subcarrier in second mixed frequency signal Z ' (t), B is equivalent noise bandwidth.
Preferably, the single-chip microcomputer, the gain amplifier α for controlling the multi-stage Low Noise Amplifier；
The computing formula of the gain amplifier α of the multi-stage Low Noise Amplifier is：
Wherein, α represents the gain amplifier value of the multi-stage Low Noise Amplifier, DaIt is first mixed frequency signal Y ' (t)
Noise coefficient, DbIt is the noise coefficient of second mixed frequency signal Z ' (t), TeRepresent equivalent noise temperature, T0Represent standard chamber
Temperature, PaThe power of time-domain signal X (t) of frequency conversion, k are treated described in representingaRepresent the dutycycle of first mixed frequency signal Y ' (t), kb
Represent the dutycycle of second mixed frequency signal Z ' (t)；
Preferably, the single-chip microcomputer, is additionally operable to control the gain amplifier β of the multi-stage power amplifier；
The computing formula of the gain amplifier β of the multi-stage power amplifier is：
Wherein β represents the gain amplifier value of the multi-stage power amplifier, DaIt is making an uproar for first mixed frequency signal Y ' (t)
Sonic system number, DbIt is the noise coefficient of second mixed frequency signal Z ' (t), TeRepresent equivalent noise temperature, T0Represent normal room temperature,
PaThe power of time-domain signal X (t) of frequency conversion, k are treated in expressionaRepresent the dutycycle of first mixed frequency signal Y ' (t), kbRepresent institute
State the dutycycle of the second mixed frequency signal Z ' (t).
Preferably, first frequency mixer is addition frequency mixer, second frequency mixer is addition frequency mixer.
Preferably, the single-chip microcomputer is built in aluminum screening arrangement.
Compared with the prior art the beneficial effects of the present invention are：A kind of SCM Based intelligent work(that the present invention is provided
The upconverter of rate regulation, can change multi-stage Low Noise Amplifier and multiple power levels amplification according to the different of input signal power
The gain of device so that the upconverter of the SCM Based intelligent power regulation is obtained in that the power output of stabilization.It is multistage
Low-noise amplifier and multi-stage power amplifier can quickly change the number of its internal multi-stage coms pipes work according to gain amplifier
Amount and the pattern of work.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in various embodiments of the present invention, below will be to being wanted needed for embodiment description
The accompanying drawing for using is briefly described.
Fig. 1 is structural representation of the invention.
Specific embodiment
Below in conjunction with accompanying drawing, the technical characteristic above-mentioned and other to the present invention and advantage are described in more detail.
Embodiment 1
As shown in figure 1, being structural representation of the invention.
The present invention provide a kind of SCM Based intelligent power regulation upconverter include signal input apparatus 10,
Power detection device 15, multi-stage Low Noise Amplifier 20, single-chip microcomputer 25, the first frequency mixer 30, bandpass filter 35, first are local
Oscillator 40, the second local oscillator 45, signal noise detection means 50, the second frequency mixer 60 and multi-stage power amplifier 70.
Signal input apparatus 10, time-domain signal X (t) of frequency conversion is treated for being input into.
Power detection device 15 is electrically connected with signal input apparatus 10 and single-chip microcomputer 25 respectively, and power detection device 15 is used for
The signal power of time-domain signal S (t) of frequency conversion is treated in detection, and will treat the signal power P of time-domain signal S (t) of frequency conversionaTransmit to
Single-chip microcomputer 25.
Multi-stage Low Noise Amplifier 20 is electrically connected with single-chip microcomputer 25, the first frequency mixer 30 and signal input apparatus 10 respectively,
Time-domain signal S (t) that multi-stage Low Noise Amplifier 20 is used to treat frequency conversion carries out signal amplification, multi-stage Low Noise Amplifier 20
Gain amplifier is α.In addition, can be adjusted to the gain amplifier α of multi-stage Low Noise Amplifier 20 by single-chip microcomputer 25.Wait to become
Signal after time-domain signal S (t) of frequency amplifies through multi-stage Low Noise Amplifier 20 is expressed as Y (t).Multi-stage Low Noise Amplifier 20
The mode cascaded by multistage coms pipes is constituted, and the mode of operation of coms pipes has cut-off, amplification, three kinds of states of saturation, multistage
The quantity for amplifying the coms pipes of mode of operation in low-noise amplifier 20 is Na。
First local oscillator 40, for sustainedly and stably providing a local oscillated signal to the first frequency mixer 30.
First frequency mixer 30 respectively with multi-stage Low Noise Amplifier 20, bandpass filter 35, the first local oscillator 40 and
Signal noise detection means 50 is connected, and the first frequency mixer 30 is used to for multi-stage low noise to amplify signal Y (t) and the first local oscillations
The local oscillated signal that device 40 is provided is mixed, the frequency f of the first mixed frequency signal Y ' (t) of the output of the first frequency mixer 30bIt is high
Amplify the frequency f of signal Y (t) in multi-stage low noisea.Preferably, the first frequency mixer 30 is addition frequency mixer.
Bandpass filter 35 is electrically connected with the first frequency mixer 30 and the second frequency mixer 60 respectively, and bandpass filter 35 is used for will
First mixed frequency signal Y ' (t) carries out bandpass filtering, so as to filtering interference signals.First mixed frequency signal Y ' (t) is after bandpass filtering
It is changed into bandpass filtered signal Z (t), the frequency of bandpass filtered signal Z (t) is consistent with the frequency of the first mixed frequency signal Y ' (t).
Bandpass filter 35 is also transmitted to the second frequency mixer 60, for double conversion bandpass filtered signal Z (t).
Second local oscillator 45, for sustainedly and stably providing a local oscillated signal to the second frequency mixer 60.
Second frequency mixer 60 respectively with the second local oscillator 45, signal noise detection means 50 and multi-stage power amplifier
70 electrical connections.Second frequency mixer 60 is used for the local oscillations letter for providing bandpass filtered signal Z (t) and the second local oscillator 45
Number it is mixed, the frequency f of the second mixed frequency signal Z ' (t) of the output of the second frequency mixer 60cHigher than bandpass filtered signal Z (t)
Frequency.Preferred second frequency mixer 60 is addition frequency mixer.
Multi-stage power amplifier 70 is connected with the second frequency mixer 60 and single-chip microcomputer 25 respectively, and multi-stage power amplifier 70 is used for
Second mixed frequency signal Z ' (t) is carried out into power amplification, in order to the remote transmission of signal.Through the work(after multi-stage power amplifier 70
Rate is amplified signal and is expressed as X (t).The gain amplifier of multi-stage power amplifier 70 is β.
Multi-stage power amplifier 70 is made up of the mode that multistage coms pipes are cascaded, and the mode of operation of coms pipes has cuts
Only, amplification, three kinds of states of saturation, the quantity that the coms pipes of mode of operation are amplified in multi-stage power amplifier 70 are Qa。
Signal noise detection means 50 is connected with the first frequency mixer 30, the second frequency mixer 60 and single-chip microcomputer 25 respectively, signal
Noise detection apparatus 50 can detect the noise coefficient of the first mixed frequency signal Y ' (t) and the second mixed frequency signal Z ' (t).First mixing
The noise coefficient of signal Y ' (t) is Da, the noise coefficient of the second mixed frequency signal Z ' (t) is Db。
First mixed frequency signal Y ' (t) noise coefficient DaComputing formula be：
Wherein, DaIt is the noise coefficient of the first mixed frequency signal Y ' (t), M represents the first mixed frequency signal Y ' (t) sub-carriers
Quantity, RMT () is the subcarrier in the first mixed frequency signal Y ' (t), its advantage is to calculate first by subcarrier function
The noise coefficient of mixed frequency signal Y ' (t) can avoid the erroneous judgement of the noise in signal, improve the accuracy that noise judges.
The noise coefficient D of the second mixed frequency signal Z ' (t)bComputing formula：
Wherein, DbIt is the noise coefficient of the second mixed frequency signal Z ' (t), M represents the second mixed frequency signal Z ' (t) sub-carriers
Quantity, NMT () is the subcarrier in the second mixed frequency signal Z ' (t), B is equivalent noise bandwidth, and its advantage is, by son
The noise coefficient of carrier function the second mixed frequency signal Z ' (t) of calculating can avoid the erroneous judgement of the noise in signal, improve noise and sentence
Disconnected accuracy.
Single-chip microcomputer 25 respectively with signal noise detection means 50, power detection device 15, multi-stage Low Noise Amplifier 20 and
Multi-stage power amplifier 70 is connected.Single-chip microcomputer 25 is used to receive the first mixed frequency signal Y ' from signal noise detection means 50
The noise coefficient D of (t)aWith the noise coefficient D of the second mixed frequency signal Z ' (t)b.Single-chip microcomputer 25 is additionally operable to receive from power detection
What device 15 was detected treats the power P of time-domain signal X (t) of frequency conversiona.Single-chip microcomputer 25 is made an uproar by the first mixed frequency signal Y ' (t)
Sonic system number Da, the second mixed frequency signal Z ' (t) noise coefficient DbWith the power P of time-domain signal X (t) for treating frequency conversionaControl is multistage low
The gain amplifier α of the noise amplifier 20 and gain amplifier β of multi-stage power amplifier 70.
The computing formula of the gain amplifier α of multi-stage Low Noise Amplifier 20 is：
Wherein α represents the gain amplifier value of multi-stage Low Noise Amplifier 20, DaIt is the noise system of the first mixed frequency signal Y ' (t)
Number, DbIt is the noise coefficient of the second mixed frequency signal Z ' (t), TeRepresent equivalent noise temperature, T0Represent normal room temperature, PaExpression is treated
The power of time-domain signal X (t) of frequency conversion, kaRepresent the dutycycle of the first mixed frequency signal Y ' (t), kbRepresent the second mixed frequency signal Z '
The dutycycle of (t).
The computing formula of the gain amplifier β of multi-stage power amplifier 70 is：
Wherein β represents the gain amplifier value of multi-stage power amplifier 70, DaIt is the noise system of the first mixed frequency signal Y ' (t)
Number, DbIt is the noise coefficient of the second mixed frequency signal Z ' (t), TeRepresent equivalent noise temperature, T0Represent normal room temperature, PaExpression is treated
The power of time-domain signal X (t) of frequency conversion, kaRepresent the dutycycle of the first mixed frequency signal Y ' (t), kbRepresent the second mixed frequency signal Z '
The dutycycle of (t).
The computing formula of the gain amplifier α of multi-stage Low Noise Amplifier 20 and the gain amplifier β of multi-stage power amplifier 70
The beneficial effect of computing formula be that it is possible to change gain amplifier α and gain amplifier β according to the different of input signal power,
So that the upconverter that a kind of SCM Based intelligent power that the present invention is provided is adjusted is obtained in that the power output of stabilization.
Multi-stage Low Noise Amplifier 20 is controlled according to gain amplifier α or quick change multistage coms pipes work quantity and work
The pattern of work.Multi-stage power amplifier 70 is controlled according to gain amplifier β or quick change multistage coms pipes work quantity and work
The pattern of work so that the stable output power that the upconverter of SCM Based intelligent power regulation is obtained.
Embodiment two
The present embodiment is with the difference of embodiment one, but because single-chip microcomputer 25 belongs to low frequency controller, it is to work
Signal is easily produced to disturb in the upconverter of high band, therefore, the single-chip microcomputer is built in aluminum screening arrangement, and its is beneficial
Effect is that it is possible to realize separate between signal Single-chip Controlling signal and high-frequency signal.
Presently preferred embodiments of the present invention is the foregoing is only, is merely illustrative for the purpose of the present invention, and it is non-limiting
's.Those skilled in the art understanding, many changes can be carried out in the spirit and scope that the claims in the present invention are limited to it,
Modification, in addition it is equivalent, but fall within protection scope of the present invention.
Claims (7)
1. the upconverter that a kind of SCM Based intelligent power is adjusted, it is characterised in that including signal input apparatus, power
Detection means, multi-stage Low Noise Amplifier, single-chip microcomputer, the first frequency mixer, bandpass filter, the first local oscillator, second
Ground oscillator, signal noise detection means, the second frequency mixer and multi-stage power amplifier；The signal input apparatus, for defeated
Enter to treat signal X (t) of frequency conversion, the signal input apparatus connect with the power detection device and the low-noise amplifier respectively
Connect；First frequency mixer respectively with the low-noise amplifier, the bandpass filter, first local oscillator and institute
State the electrical connection of signal noise detection means；Second frequency mixer respectively with the signal noise detection means, the multistage work(
The electrical connection of rate amplifier, the bandpass filter and second local oscillator；The single-chip microcomputer is made an uproar with the signal respectively
The electrical connection of sound detection device, the multi-stage power amplifier, the multi-stage Low Noise Amplifier and the power detection device.
2. upconverter as claimed in claim 1, it is characterised in that the multi-stage Low Noise Amplifier includes multi-stage cascade
Coms is managed；The multi-stage power amplifier includes that the coms of multi-stage cascade is managed.
3. upconverter as claimed in claim 2, it is characterised in that the signal noise detection means, for detecting first
The noise coefficient D of mixed frequency signal Y ' (t)aWith the noise coefficient D of the second mixed frequency signal Z ' (t)b, first mixed frequency signal Y ' (t)
Noise coefficient DaComputing formula be：
Wherein, DaIt is the noise coefficient of first mixed frequency signal Y ' (t), M represents that the first mixed frequency signal Y ' (t) neutron is carried
The quantity of ripple, RMT () is the subcarrier in first mixed frequency signal Y ' (t)；
The noise coefficient D of second mixed frequency signal Z ' (t)bComputing formula：
Wherein, DbIt is the noise coefficient of second mixed frequency signal Z ' (t), M represents that the second mixed frequency signal Z ' (t) neutron is carried
The quantity of ripple, NMT () is the subcarrier in second mixed frequency signal Z ' (t), B is equivalent noise bandwidth.
4. upconverter as claimed in claim 3, it is characterised in that the single-chip microcomputer, for controlling the multi-stage low noise
The gain amplifier α of amplifier；
The computing formula of the gain amplifier α of the multi-stage Low Noise Amplifier is：
Wherein, α represents the gain amplifier value of the multi-stage Low Noise Amplifier, DaIt is the noise of first mixed frequency signal Y ' (t)
Coefficient, DbIt is the noise coefficient of second mixed frequency signal Z ' (t), TeRepresent equivalent noise temperature, T0Represent normal room temperature, Pa
The power of time-domain signal X (t) of frequency conversion, k are treated described in representingaRepresent the dutycycle of first mixed frequency signal Y ' (t), kbRepresent
The dutycycle of second mixed frequency signal Z ' (t).
5. upconverter as claimed in claim 4, it is characterised in that the single-chip microcomputer, is additionally operable to control the multiple power levels
The gain amplifier β of amplifier；
The computing formula of the gain amplifier β of the multi-stage power amplifier is：
Wherein β represents the gain amplifier value of the multi-stage power amplifier, DaIt is the noise system of first mixed frequency signal Y ' (t)
Number, DbIt is the noise coefficient of second mixed frequency signal Z ' (t), TeRepresent equivalent noise temperature, T0Represent normal room temperature, PaTable
Show the power of time-domain signal X (t) for treating frequency conversion, kaRepresent the dutycycle of first mixed frequency signal Y ' (t), kbRepresent described
The dutycycle of two mixed frequency signals Z ' (t).
6. upconverter as claimed in claim 5, it is characterised in that first frequency mixer is addition frequency mixer, described the
Two frequency mixers are addition frequency mixer.
7. the upconverter as described in claim 1-6, it is characterised in that the single-chip microcomputer is built in aluminum screening arrangement.
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| CN201710160421.4A CN106936390A (en) | 2017-03-17 | 2017-03-17 | A kind of upconverter of SCM Based intelligent power regulation |
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