CN101841342A - Method, device and system for realizing signal transmission with low power consumption - Google Patents
Method, device and system for realizing signal transmission with low power consumption Download PDFInfo
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- CN101841342A CN101841342A CN201010158618A CN201010158618A CN101841342A CN 101841342 A CN101841342 A CN 101841342A CN 201010158618 A CN201010158618 A CN 201010158618A CN 201010158618 A CN201010158618 A CN 201010158618A CN 101841342 A CN101841342 A CN 101841342A
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- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a method, a device and a system for realizing signal transmission with low power consumption and carrier suppression correction. The method comprises the following steps: analog baseband signals are sent to a transmission low-pass filter, and out-off-band harmonic waves are filtered by the transmission low-pass filter to be output in a mode of low-frequency signals; a direct-current correction module acquires the low-frequency signals output by the transmission low-pass filter and calibrates the low-frequency signals output by the low-pass filter according to the information of the acquired low-frequency signals; the transmission low-pass filter sends the calibrated low-frequency signals to a transmitter mixer, and the transmitter mixer carries out up-conversion treatment on the low-frequency signals and outputs radio-frequency signals; and a passive resistance array attenuator controls the power of the radio-frequency signals output by the transmitter mixer and transmits the radio-frequency signals. In the method, the device and the system provided by the invention for realizing carrier suppression, the passive resistance array attenuator is adopted to realize the purpose of controlling signal power, and the signal power does not need to be biased by current, thereby greatly reducing the power loss.
Description
Technical field
The application relates to the communications field, particularly relates to a kind of method, Apparatus and system of realizing signal transmission with low power consumption.
Background technology
Transmitter design involved in the present invention is the important component part of rf chip, and it plays low frequency baseband signal is changed into radiofrequency signal, and the effect of launching with certain power.And quality that transmits and transmitter are when the emission high-power signal, weigh the important indicator of transmitter design quality quality when the power consumption of itself is big or small, the signal quality of emission is good, and it is outstanding and have a higher rate of information throughput that this transmitter has just had speech quality.And low in energy consumption, this transmitter has just had the ability of longer stand-by time and longer air time, and this ability is vital in wireless telecommunication system.The quality of transmission signal quality is determined by error vector magnitude (EVM), and wireless telecommunication system all has the requirement of comparison strictness to the error vector magnitude (EVM) of transmitter, the factor that influences error vector magnitude has a lot, the phase noise (Pn) that comprises local oscillator, the group delay of transmitter filter (Group Delay) and carrier suppressed or the like.And wherein carrier suppressed is that to influence error vector magnitude the most serious and be the most scabrous problem.Because radio communication is used for portable terminal mostly, so the power consumption of signal with high-power emission the time is too fast, power consumption is big, the air time is too short also to be a very big problem simultaneously.
And when solving high power transmission the excessive problem of power consumption, the producer that has adopts the progression that reduces variable gain amplifier to reduce power consumption, but the dynamic range of the deterioration variable gain amplifier that the isolation of the whole transmitter of reduction that this method can be serious simultaneously can be serious.
As seen in the prior art, being accompanied by very big power consumption when realizing high power transmission, is technical issues that need to address so how can reduce power consumption when high power transmission.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of method, Apparatus and system of realizing that signal transmission with low power consumption and carrier suppressed are proofreaied and correct; Can be with lower power consumption emission high-power signal.
Technical scheme is as follows:
A kind of method that realizes signal transmission with low power consumption comprises:
Analog baseband signal is sent to the emission low pass filter, filter the outer harmonic wave of band by described emission low pass filter and export with the low frequency signal form;
The direct current correction module is gathered the low frequency signal of described emission low pass filter output and according to the low frequency signal information of gathering the low frequency signal of described low pass filter output is calibrated;
Described emission low pass filter will send to transmitter mixer through the low frequency signal of calibration, and described transmitter mixer is carried out upconversion process to described low frequency signal and exported with the radiofrequency signal form;
The passive resistance array attenuator is carried out power control and emission to the radiofrequency signal of described transmitter mixer output.
Above-mentioned method, preferred, the process specific implementation that described direct current correction module is calibrated the low frequency signal of described low pass filter output is:
Sample-hold circuit is sampled to the low frequency signal of the positive and negative output output of described emission low pass filter, and sampled signal is sent to comparator;
Described comparator keeps described sampled signal, sends sampled signal once more up to described sample-hold circuit;
Described comparator compares the low frequency signal of the positive and negative output output of the described emission low pass filter of twice reception, and comparative result is sent to digital control sign indicating number generation circuit;
The comparative result that described digital control sign indicating number generation circuit sends according to described comparator produces control code and writes down described control code figure place N;
Analog to digital converter is converted to the control signal that described emission low pass filter needs with described control code, and uses described control signal and regulate the positive and negative end output voltage of described emission low pass filter;
Repeat above process N time, finish the primary calibration process.
Above-mentioned method, preferred, the process that described digital control sign indicating number produces circuit generation control code is:
Successive approximation register receives the comparative result that described comparator sends;
Shift register sends to described successive approximation register with default signal value;
Described successive approximation register produces control code according to described signal value and in conjunction with described comparative result.
A kind of device of realizing signal transmission with low power consumption comprises: emission low pass filter, direct current correction module, transmitter mixer and passive resistance battle array attenuator;
Wherein: described emission low pass filter is used to receive analog baseband signal, filters the outer harmonic wave of band of described base-band analog signal and exports with the low frequency signal form;
Described direct current correction module is used to gather the low frequency signal of described emission low pass filter output and according to the low frequency signal information of gathering the low frequency signal of described emission low pass filter output is calibrated;
Described transmitter mixer is used to receive the low frequency signal through calibration that described emission low pass filter sends, and described low frequency signal through calibration is carried out upconversion process and exports with the radiofrequency signal form;
Described passive resistance array attenuator is used for the radiofrequency signal of described transmitter mixer output is carried out power control and emission.
Above-mentioned device, preferred, described direct current correction module comprises:
Sample-hold circuit, comparator, digital control sign indicating number produce circuit and analog to digital converter;
Wherein: described sample-hold circuit is used for the low frequency signal of the positive and negative output output of described emission low pass filter is sampled, and sampled signal is sent to described comparator;
Described comparator is used for described sampled signal is kept, send sampled signal once more up to described sample-hold circuit, and the low frequency signal of the positive and negative output of the described emission low pass filter of twice reception output compared, comparative result is sent to described digital control sign indicating number produce circuit;
Described control code produces circuit and is used for the comparative result generation control code that sends according to described comparator and writes down described control code figure place;
Described analog to digital converter is used for described control code is converted to the control signal of described emission low pass filter needs, and uses described control signal and regulate the positive and negative output voltage of described emission low pass filter.
Above-mentioned device, preferred, described control code produces circuit and comprises: successive approximation register and shift register;
Described shift register is used for default signal value is sent to described successive approximation register;
Described successive approximation register is used to receive the comparative result that described comparator sends, and produces control code according to the preset signals of described shift register transmission and in conjunction with described comparative result.
Above-mentioned device, preferred, described emission low pass filter has two attenuation poles, and its normalization limit is-0.071068 ± j0.07168.
Above-mentioned device, preferred, described direct current correction module to the scope of described emission low pass filter output low frequency signal correction be-20mV～+ 20mV, its stepping is 1.2mV.
Above-mentioned device, preferred, described transmitter mixer comprises: monolateral frequency mixer, adder and resonant circuit; Described monolateral frequency mixer comprises the first local oscillator switch M1, the second local oscillator switch M2, the 3rd local oscillator switch M3, the 4th local oscillator switch M4, the first signal amplifier tube M5, secondary signal amplifier tube M6, the first image current source capsule M7, the second image current source capsule M8 and the 3rd image current source capsule M9;
The described first local oscillator switch M1, the second local oscillator switch M2, the 3rd local oscillator switch M3, the 4th local oscillator switch M4, the first signal amplifier tube M5 are 1: 1: 1 with the area ratio of secondary signal amplifier tube M6: 1: 2: 2;
The area ratio of the described first image current source capsule M7, the second image current source capsule M8 and the 3rd image current source capsule M9 is: 1: 15: 15;
Described resonant circuit is a LC antiresonant circuit and as the load of described transmitter mixer.
Above-mentioned device, preferred, described passive resistance array attenuator comprises positive radio frequency input circuit, negative radio frequency input circuit and transformer;
The circuit connecting mode of described positive radio frequency input circuit and described negative radio frequency input circuit and circuit parts are all about ground connection center line symmetry;
Described positive radio frequency input circuit comprises the 1st～the N-1 circuit subelement and the N circuit subelement of syndeton unanimity;
Described the 1st circuit subelement comprises the first control switch S1, the first controlling resistance R
S1With input resistance Rin; Described first control switch S1 and described input resistance Rin are connected on the positive electricity polar curve and the line between the described ground connection center line of described positive radio frequency input circuit successively, the circuit connection between wherein said first control switch S1 and the described input resistance Rin respectively with the input of described positive radio frequency input circuit, the described first controlling resistance R
S1An end connect the described first controlling resistance R
S1The other end be connected with the input of described second circuit subelement;
In described the 2nd～the N-1 circuit subelement with on the corresponding position of described input resistance Rin, be respectively arranged with resistance R
P1～R
P (N-2)
Described N circuit subelement comprises N control switch S
NAnd resistance R
P (N-1), described N control switch S
NAnd resistance R
P (N-1)Series connection, the line between it is connected with the output of N-1 circuit subelement;
Be in series with the equivalent resistance Rload of described transformer on the line between the positive electricity polar curve of described positive radio frequency input circuit and the negative electricity polar curve of described negative radio frequency input circuit;
The ratio of the resistance value between described resistance R s, resistance R p, resistance R in and the resistance R load is 1: 2: 2: 2.
Above-mentioned device, preferred, the series resistance array module that the resistance that described passive resistance array attenuator comprises is formed is used for the differential voltage letter of the described passive resistance array attenuator of input is decayed in proportion;
The serial control switch that the switch that described passive resistance array attenuator comprises is formed is used for the difference AC electric current of control flows through inverter load;
The ratio of the main coil of described transformer and secondary coil is 4: 1, and described transformer is used for the differential signal input is converted into single-ended signal output.
A kind of system that realizes signal transmission with low power consumption comprises client, application end and realizes the device of signal transmission with low power consumption.
The technical scheme that is provided by above the embodiment of the present application as seen, the method of realization signal transmission with low power consumption provided by the invention, Apparatus and system, adopt passive electric resistance array attenuator to replace the control of traditional active variable gain amplifier realization to signal power, because what the embodiment of the present application adopted is passive device, so the electric resistance array attenuator does not need electric current that it is setovered in work, greatly reduces power loss.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the method flow diagram of the disclosed realization signal transmission with low power consumption of the embodiment of the present application;
Fig. 2 is the realization flow figure of the disclosed calibration process of the embodiment of the present application;
Fig. 3 is the disclosed control code production process of a embodiment of the present application flow chart;
Fig. 4 is the structure drawing of device of the disclosed realization signal transmission with low power consumption of the embodiment of the present application;
Fig. 5 is the concrete structure figure of the disclosed direct current correction module of the embodiment of the present application;
Fig. 6 is the composition structure chart that the disclosed digital control sign indicating number of the embodiment of the present application produces circuit;
Fig. 7 is the disclosed emission low pass filter of a embodiment of the present application structure chart;
Fig. 8 is the disclosed transmitter mixer structure chart of the embodiment of the present application;
Fig. 9 is monolateral mixer architecture figure in the disclosed transmitter mixer of the embodiment of the present application;
Figure 10 is the disclosed passive resistance array attenuator of a embodiment of the present application circuit structure diagram;
Figure 11 is the system diagram of the disclosed realization signal transmission with low power consumption of the embodiment of the present application.
Embodiment
The embodiment of the present application provides a kind of method, Apparatus and system of realizing signal transmission with low power consumption, adopts passive electric resistance array attenuator to replace the control of traditional active variable gain amplifier realization to signal power, greatly reduces power loss.
More than be the application's core concept, understand the application's scheme better in order to make those skilled in the art person.Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
The method flow diagram of the disclosed realization signal transmission with low power consumption of the embodiment of the present application as shown in Figure 1, performing step is as follows:
Step S101: analog baseband signal is sent to the emission low pass filter, filter the outer harmonic wave of band by the emission low pass filter and export with the low frequency signal form;
Step S102: the collection of direct current correction module is launched the low frequency signal of low pass filter output and according to the low frequency signal information of gathering the low frequency signal of low pass filter output is calibrated;
Step S103: the emission low pass filter will send to transmitter mixer through the low frequency signal of calibration, and transmitter mixer is carried out upconversion process to low frequency signal and exported with the radiofrequency signal form;
Step S104: the passive resistance array attenuator is carried out power control and emission to the radiofrequency signal of transmitter mixer output.
The disclosed control code production process of the embodiment of the present application flow chart as shown in Figure 2, performing step is as follows:
Step S201: sample-hold circuit is sampled to the low frequency signal of the positive and negative output output of emission low pass filter, and sampled signal is sent to comparator;
Step S202: comparator keeps sampled signal, sends sampled signal once more up to sample-hold circuit;
Step S203: comparator compares the low frequency signal of the positive and negative output output of the described emission low pass filter of twice reception, and comparative result is sent to digital control sign indicating number generation circuit;
Step S204: digital control sign indicating number produces circuit and produces control code and record controls code bit number N according to the comparative result that comparator sends;
Step S205: analog to digital converter is converted to the control signal that the emission low pass filter needs with control code, and the positive and negative end output voltage of application controls Signal Regulation emission low pass filter;
Step S206: repeat above step N time, finish the primary calibration process.
Step S201 to step S205 be once comparing of trimming process, repeat N time, by reducing the DC maladjustment of output each time more one by one, effectively proofread and correct DC offset voltage.
The control code figure place N that writes down among the step S204 also is the figure place of analog to digital converter, and the precision of the high more correction of figure place is just high more, and the complexity of circuit increases simultaneously, and it is big that power consumption and area become.In the application process of reality, take all factors into consideration the figure place of each side factor choose reasonable correcting circuit, general correction accuracy be 1/2 positive integer doubly.
The disclosed control code production process of the embodiment of the present application flow chart as shown in Figure 3, performing step is as follows:
Step S301: successive approximation register receives the comparative result that comparator sends;
Step S302: shift register sends to successive approximation register with default signal value;
Step S303: successive approximation register produces control code according to signal value and in conjunction with comparative result.
The structure drawing of device of the disclosed realization signal transmission with low power consumption of the embodiment of the present application comprises as shown in Figure 4: emission low pass filter 401, direct current correction module 402, transmitter mixer 403 and passive resistance battle array attenuator 404;
Wherein: emission low pass filter 401 is used to receive analog baseband signal, filters the outer harmonic wave of band of base-band analog signal and exports with the low frequency signal form;
Direct current correction module 402 is used to gather the low frequency signal of emission low pass filter 401 outputs and according to the low frequency signal information of gathering the low frequency signal of emission low pass filter 401 outputs is calibrated;
Passive resistance array attenuator 404 is used for the radiofrequency signal of transmitter mixer 403 outputs is carried out power control and emission.
Radiofrequency signal is transmitted into the output of carrier suppressed implement device by passive resistance array attenuator 404.
The transmission channel of the disclosed realization low power transmissions of the embodiment of the present application signalling is made up of emission low pass filter 401, direct current correction module 402, transmitter mixer 403 and passive resistance array attenuator 404.
The concrete structure figure of the disclosed direct current correction module of the embodiment of the present application comprises as shown in Figure 5:
Sample-hold circuit 501, comparator 502, digital control sign indicating number produce circuit 503 and analog to digital converter 504;
Wherein: sample-hold circuit 501 is used for the low frequency signal of emission low pass filter 401 positive and negative output outputs is sampled, and sampled signal is sent to comparator 502;
Control code produces circuit 503 and is used for producing control code and writing down described control code figure place according to the comparative result that comparator 502 sends;
Analog to digital converter 504 is used for control code is converted to the control signal of emission low pass filter 401 needs, and the positive and negative output voltage of application controls Signal Regulation emission low pass filter.
The composition structure chart of the disclosed digital control sign indicating number generation circuit of the embodiment of the present application comprises: successive approximation register 602 and shift register 601 as shown in Figure 6;
Produce the course of work of the figure place N=3 explanation direct current correction module of circuit below with control code:
It is 100 that initial pulse makes the content S2-S0 in the shift register, the successive approximation register zero clearing, and control code C2-C0 initial value is 000.First clock arrival C2 puts 1, if comparative result is high, the DC potential of expression positive output end is higher than negative output terminal, and control code C2 puts 0, if comparative result is low, the DC potential of expression positive output end is lower than negative output terminal, control code C2 is 1 (remaining unchanged), at the trailing edge of this clock, C1 is put 1 simultaneously, the shift register displacement is finished once and is compared.Repeat above process, carry out the 2nd time, the 3rd comparison.After relatively finishing for three times, obtain final control code.Control code is converted to analog control signal through analog to digital converter, is added on the filter, and DC offset voltage is corrected in the definite accuracy.
By above argumentation as can be known, the direct current difference that the calibration of carrier suppressed is regulated the filter input by the direct current correction module realizes that correction module adopts successive approximation algorithm, is a Digital Analog Hybrid Circuits.
The structure chart of the disclosed emission low pass filter of the embodiment of the present application as shown in Figure 7, the filter that the embodiment of the present application adopts is the active emission low pass filters in two rank, this filter is made up of two operational amplifiers and input resistance R1, feedback resistance R2, R3, R4 and feedback capacity C1, C2, this filter has two attenuation poles, and its normalization limit is-0.071068 ± j0.07168.
Monolateral mixer architecture figure is respectively as Fig. 8 and shown in Figure 9 in disclosed transmitter mixer structure chart of the embodiment of the present application and the transmitter mixer, the transmitter mixer that the embodiment of the present application adopts is the rich special structure of gill, low local oscillator is injected, and analog baseband signal is directly up-converted to required radiofrequency signal; This frequency mixer has very high carrier suppressed and monolateral band to suppress, output signal spuious less, and chip is not very high to the requirement of the outer inhibition of band of the outer radio-frequency filter of sheet like this; Specific implementation is: the size ratio of mixer tube M1～M6 is 1: 1: 1: 1: 2: 2;
The size ratio of mixer tube M7～M9 is: 1: 15: 15;
Resonant circuit is a LC antiresonant circuit and as the load of transmitter mixer.
The disclosed passive resistance array attenuator of the embodiment of the present application circuit structure diagram comprises positive radio frequency input circuit, negative radio frequency input circuit and transformer as shown in figure 10;
The circuit connecting mode of positive radio frequency input circuit and negative radio frequency input circuit and circuit parts are all about ground connection center line symmetry;
Positive radio frequency input circuit comprises the first～N-1 circuit subelement and the N circuit subelement of syndeton unanimity;
The first circuit subelement comprises first control switch (S1), first controlling resistance (Rs1) and input resistance (Rin); First control switch (S1) and input resistance (Rin) series connection, circuit connection one end between it is connected with an end of positive radio frequency input circuit, the other end is connected with an end of first controlling resistance (Rs1), and the other end of first controlling resistance (Rs1) is connected with the input of second circuit subelement;
The position of input resistance (Rin) is respectively resistance R p1～Rp (N-2) in second～N circuit subelement;
N circuit subelement comprises N control switch (SN) and resistance R p (N-1), N control switch (SN) and resistance R p (N-1) series connection, and the line between it is connected with the output of N-1 circuit subelement;
Be in series with the equivalent resistance (Rload) of transformer on the line between the positive electricity polar curve of positive radio frequency input circuit and the negative electricity polar curve of negative radio frequency input circuit.
The passive resistance array attenuator mainly is made up of a series of resistance and control switch and on-chip transformer;
Wherein Vout is the voltage output of passive resistance array attenuator, and Vin is the voltage input of passive resistance array attenuator, and Rload is the equivalent resistance of transformer, and S1～S (N) is switch arrays, and wherein the ratio of Rs, Rp, Rin and Rload is 1: 2: 2: 2.Below be respectively 100 ohm, 200 ohm, 200 ohm, 200 ohm with Rs, Rp, Rin and Rload, be example during N=2, describe the operation principle of passive resistance array attenuator in detail.When N=2, switch S 2 conductings, the voltage gain of this moment is:
Have only this moment switch S 2 to be conducting state, other switches all are off-state, and this passive resistance array attenuator can just can realize the control to gain voltage signal by the different switch of difference gating.Input signal is 4: 1 transformer input through Rs1, S2 to the main and sub-coil ratio, and this differential signal is converted to single-ended output through transformer at last.
The system diagram of the disclosed realization signal transmission with low power consumption of the embodiment of the present application comprises as shown in figure 11: device 112 and application end 113 that client 11, realization signal transmission with low power consumption and carrier suppressed are proofreaied and correct;
Wherein: client 111 is used to the client that exercisable platform is provided;
The device 112 of realizing signal transmission with low power consumption is used to realize the signal emission;
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is difference with other embodiment.The above only is the application's a embodiment; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection range.
Claims (12)
1. a method that realizes signal transmission with low power consumption is characterized in that, comprising:
Analog baseband signal is sent to the emission low pass filter, filter the outer harmonic wave of band by described emission low pass filter and export with the low frequency signal form;
The direct current correction module is gathered the low frequency signal of described emission low pass filter output and according to the low frequency signal information of gathering the low frequency signal of described low pass filter output is calibrated;
Described emission low pass filter will send to transmitter mixer through the low frequency signal of calibration, and described transmitter mixer is carried out upconversion process to described low frequency signal and exported with the radiofrequency signal form;
The passive resistance array attenuator is carried out power control and emission to the radiofrequency signal of described transmitter mixer output.
2. method according to claim 1 is characterized in that, the process specific implementation that described direct current correction module is calibrated the low frequency signal of described low pass filter output is:
Sample-hold circuit is sampled to the low frequency signal of the positive and negative output output of described emission low pass filter, and sampled signal is sent to comparator;
Described comparator keeps described sampled signal, sends sampled signal once more up to described sample-hold circuit;
Described comparator compares the low frequency signal of the positive and negative output output of the described emission low pass filter of twice reception, and comparative result is sent to digital control sign indicating number generation circuit;
The comparative result that described digital control sign indicating number generation circuit sends according to described comparator produces control code and writes down described control code figure place N;
Analog to digital converter is converted to the control signal that described emission low pass filter needs with described control code, and uses described control signal and regulate the positive and negative end output voltage of described emission low pass filter;
Repeat above process N time, finish the primary calibration process.
3. method according to claim 2 is characterized in that, the process that described digital control sign indicating number produces circuit generation control code is:
Successive approximation register receives the comparative result that described comparator sends;
Shift register sends to described successive approximation register with default signal value;
Described successive approximation register produces control code according to described signal value and in conjunction with described comparative result.
4. a device of realizing signal transmission with low power consumption is characterized in that, comprising: emission low pass filter, direct current correction module, transmitter mixer and passive resistance battle array attenuator;
Wherein: described emission low pass filter is used to receive analog baseband signal, filters the outer harmonic wave of band of described base-band analog signal and exports with the low frequency signal form;
Described direct current correction module is used to gather the low frequency signal of described emission low pass filter output and according to the low frequency signal information of gathering the low frequency signal of described emission low pass filter output is calibrated;
Described transmitter mixer is used to receive the low frequency signal through calibration that described emission low pass filter sends, and described low frequency signal through calibration is carried out upconversion process and exports with the radiofrequency signal form;
Described passive resistance array attenuator is used for the radiofrequency signal of described transmitter mixer output is carried out power control and emission.
5. device according to claim 4 is characterized in that, described direct current correction module comprises:
Sample-hold circuit, comparator, digital control sign indicating number produce circuit and analog to digital converter;
Wherein: described sample-hold circuit is used for the low frequency signal of the positive and negative output output of described emission low pass filter is sampled, and sampled signal is sent to described comparator;
Described comparator is used for described sampled signal is kept, send sampled signal once more up to described sample-hold circuit, and the low frequency signal of the positive and negative output of the described emission low pass filter of twice reception output compared, comparative result is sent to described digital control sign indicating number produce circuit;
Described control code produces circuit and is used for the comparative result generation control code that sends according to described comparator and writes down described control code figure place;
Described analog to digital converter is used for described control code is converted to the control signal of described emission low pass filter needs, and uses described control signal and regulate the positive and negative output voltage of described emission low pass filter.
6. device according to claim 5 is characterized in that, described control code produces circuit and comprises: successive approximation register and shift register;
Described shift register is used for default signal value is sent to described successive approximation register;
Described successive approximation register is used to receive the comparative result that described comparator sends, and produces control code according to the preset signals of described shift register transmission and in conjunction with described comparative result.
7. device according to claim 4 is characterized in that, described emission low pass filter has two attenuation poles, and its normalization limit is-0.071068 ± j0.07168.
8. device according to claim 4 is characterized in that, described direct current correction module to the scope of described emission low pass filter output low frequency signal correction be-20mV～+ 20mV, its stepping is 1.2mV.
9. device according to claim 4 is characterized in that, described transmitter mixer comprises: monolateral frequency mixer, adder and resonant circuit; Described monolateral frequency mixer comprises the first local oscillator switch M1, the second local oscillator switch M2, the 3rd local oscillator switch M3, the 4th local oscillator switch M4, the first signal amplifier tube M5, secondary signal amplifier tube M6, the first image current source capsule M7, the second image current source capsule M8 and the 3rd image current source capsule M9;
The described first local oscillator switch M1, the second local oscillator switch M2, the 3rd local oscillator switch M3, the 4th local oscillator switch M4, the first signal amplifier tube M5 are 1: 1: 1 with the area ratio of secondary signal amplifier tube M6: 1: 2: 2;
The area ratio of the described first image current source capsule M7, the second image current source capsule M8 and the 3rd image current source capsule M9 is: 1: 15: 15;
Described resonant circuit is a LC antiresonant circuit and as the load of described transmitter mixer.
10. device according to claim 4 is characterized in that, described passive resistance array attenuator comprises positive radio frequency input circuit, negative radio frequency input circuit and transformer;
The circuit connecting mode of described positive radio frequency input circuit and described negative radio frequency input circuit and circuit parts are all about ground connection center line symmetry;
Described positive radio frequency input circuit comprises the 1st～the N-1 circuit subelement and the N circuit subelement of syndeton unanimity;
Described the 1st circuit subelement comprises the first control switch S1, the first controlling resistance R
S1With input resistance Rin; Described first control switch S1 and described input resistance Rin are connected on the positive electricity polar curve and the line between the described ground connection center line of described positive radio frequency input circuit successively, the circuit connection between wherein said first control switch S1 and the described input resistance Rin respectively with the input of described positive radio frequency input circuit, the described first controlling resistance R
S1An end connect the described first controlling resistance R
S1The other end be connected with the input of described second circuit subelement;
In described the 2nd～the N-1 circuit subelement with on the corresponding position of described input resistance Rin, be respectively arranged with resistance R
P1～R
P (N-2)
Described N circuit subelement comprises N control switch S
NAnd resistance R
P (N-1), described N control switch S
NAnd resistance R
P (N-1)Series connection, the line between it is connected with the output of N-1 circuit subelement;
Be in series with the equivalent resistance Rload of described transformer on the line between the positive electricity polar curve of described positive radio frequency input circuit and the negative electricity polar curve of described negative radio frequency input circuit;
The ratio of the resistance value between described resistance R s, resistance R p, resistance R in and the resistance R load is 1: 2: 2: 2.
11. device according to claim 10 is characterized in that, the series resistance array module that the resistance that described passive resistance array attenuator comprises is formed is used for the differential voltage letter of the described passive resistance array attenuator of input is decayed in proportion;
The serial control switch that the switch that described passive resistance array attenuator comprises is formed is used for the difference AC electric current of control flows through inverter load;
The ratio of the main coil of described transformer and secondary coil is 4: 1, and described transformer is used for the differential signal input is converted into single-ended signal output.
12. a system that realizes signal transmission with low power consumption is characterized in that, comprises the device of each described realization signal transmission with low power consumption of client, application end and claim 4～11.
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Cited By (4)
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| CN105119572A (en) * | 2015-08-11 | 2015-12-02 | 广东博威尔电子科技有限公司 | Implementation scheme for increasing transmitter variable frequency linearity |
| CN106716852A (en) * | 2014-09-15 | 2017-05-24 | 高通股份有限公司 | On-chip linearity calibration |
| CN106788494A (en) * | 2017-03-04 | 2017-05-31 | 国网福建省电力有限公司 | A kind of electronics signal launch control system |
| CN110537351A (en) * | 2017-04-28 | 2019-12-03 | 松下电器（美国）知识产权公司 | Measuring device and measurement method |
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| CN1649254A (en) * | 2004-01-26 | 2005-08-03 | 松下电器产业株式会社 | Transmission circuit |
| US20070165879A1 (en) * | 2006-01-13 | 2007-07-19 | Vimicro Corporation | Dual Microphone System and Method for Enhancing Voice Quality |
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| CN1649254A (en) * | 2004-01-26 | 2005-08-03 | 松下电器产业株式会社 | Transmission circuit |
| US20070165879A1 (en) * | 2006-01-13 | 2007-07-19 | Vimicro Corporation | Dual Microphone System and Method for Enhancing Voice Quality |
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| CN106716852A (en) * | 2014-09-15 | 2017-05-24 | 高通股份有限公司 | On-chip linearity calibration |
| CN106716852B (en) * | 2014-09-15 | 2019-10-08 | 高通股份有限公司 | The calibration of the on piece linearity |
| CN105119572A (en) * | 2015-08-11 | 2015-12-02 | 广东博威尔电子科技有限公司 | Implementation scheme for increasing transmitter variable frequency linearity |
| CN105119572B (en) * | 2015-08-11 | 2017-11-17 | 广东博威尔电子科技有限公司 | It is a kind of to increase the linear up-converter circuits of emitter frequency conversion |
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| CN110537351A (en) * | 2017-04-28 | 2019-12-03 | 松下电器（美国）知识产权公司 | Measuring device and measurement method |
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