CN104639081A - Automatic gain control device of superheterodyne receiving circuit and superheterodyne receiving circuit - Google Patents
Automatic gain control device of superheterodyne receiving circuit and superheterodyne receiving circuit Download PDFInfo
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Abstract
The embodiment of the invention provides an automatic gain control device of a superheterodyne receiving circuit and the superheterodyne receiving circuit. The automatic gain control device comprises a radiodetector and a voltage comparison module connected with the radiodetector, wherein the radiodetector is connected with the output end of a variable gain amplifier of the superheterodyne receiving circuit, detects the intensity of output signals of the variable gain amplifier and obtains detection voltage; the voltage comparison module is connected with the input end of the variable gain amplifier of the superheterodyne receiving circuit, comprises the detection voltage with the reference voltage, obtains difference voltage and outputs the difference voltage to the variable gain amplifier, so that the variable gain amplifier is subjected to gain regulation according to the difference voltage. The automatic gain control is realized in a hardware mode, and compared with the prior art of executing the corresponding algorithm through a processor, the automatic gain control device and the superheterodyne receiving circuit have the advantages that the automatic gain control mode is realized, and the stability and the security of a circuit are improved.
Description
Technical field
The application relates to circuit engineering field, relates to a kind of automatic gain control equipment and stenode circuit of overproof outer receiving circuit in particular.
Background technology
Stenode circuit adopts supradyne manner, and the signal received by antenna, after the process such as amplification, frequency conversion, obtains frequency variation signal, then by analog/digital conversion, obtains digitized signal, carry out signal transacting by processor.Stenode circuit can be widely used in various application, such as, in sweep generator, for the acquisition etc. of radiofrequency signal.
In stenode circuit, because the signal magnitude received is different, in order to realize larger reception dynamic range, usually design automatic growth control (AGC is needed in link design, automatic gain control), make it possible to according to receiving signal magnitude, the gain of dynamic adjustment link.
In prior art, in stenode circuit, the realization of AGC is after analog/digital conversion, by processor according to digitized signal, power calculates, and result of calculation is exported to the variable gain amplifier (VGA, variable gain amplifier) in stenode circuit.If signal is excessive, then reduce the gain of VGA; If signal gets too small, then increase the gain of VGA.
But existing this automatic growth control mode, performs corresponding algorithm realization by processor, have algorithm and do not restrain and the risk occurring positive feedback, serious words even burn hardware.
Summary of the invention
In view of this, this application provides a kind of automatic gain control equipment and stenode circuit of stenode circuit, reduce algorithm not strip of convergence incoming call transportation work style danger in prior art, improve stability and the fail safe of system.
For achieving the above object, the application provides following technical scheme:
First aspect, provides a kind of automatic gain control equipment of stenode circuit, comprising:
Wave detector and the voltage comparison module be connected with described wave detector;
Described wave detector connects the output of the variable gain amplifier of described stenode circuit, detects the size of described variable gain amplifier output signal, obtains detecting circuit;
Described voltage comparison module connects the input of the variable gain amplifier of described stenode circuit, described detecting circuit and reference voltage are compared, obtain difference voltage, export described variable gain amplifier to, so that described variable gain amplifier carries out Gain tuning according to described difference voltage.
Preferably, also comprise the voltage transformation module be connected with described voltage comparison module, described voltage comparison module connects the input of described variable gain amplifier by described voltage transformation module;
Described voltage transformation module exports described variable gain amplifier to after described difference voltage is added preset value, and wherein, what described difference voltage added that described preset value obtains is more than or equal to 0 with value;
What according to described difference voltage, described variable gain amplifier specifically added that described preset value obtains carries out Gain tuning with value.
Preferably, described voltage transformation module is DC bias circuit.
Second aspect, provides a kind of stenode circuit, comprising:
The Anneta module be sequentially connected in series, filter, low noise amplifier, gain amplifier, frequency mixer, variable gain amplifier, analog to digital converter, processor and the automatic gain control equipment arranged between the output and input of described variable gain amplifier;
Described automatic gain control equipment comprises:
The wave detector be connected in series and voltage comparison module;
Described wave detector connects the output of the variable gain amplifier of described stenode circuit, detects the size of described variable gain amplifier output signal, obtains detecting circuit;
Described voltage comparison module connects the input of the variable gain amplifier of described stenode circuit, described detecting circuit and reference voltage is compared, and obtains difference voltage;
Described variable gain amplifier, according to described difference voltage, carries out Gain tuning.
Preferably, described automatic gain control equipment also comprises the voltage transformation module be connected with described voltage comparison module, and described voltage comparison module connects the input of described variable gain amplifier by described voltage transformation module;
Described voltage transformation module exports described variable gain amplifier to after described difference voltage is added preset value, and wherein, what described difference voltage added that described preset value obtains is more than or equal to 0 with value;
What according to described difference voltage, described variable gain amplifier specifically added that described preset value obtains carries out Gain tuning with value.
Preferably, described voltage transformation module is DC bias circuit.
Second aspect, provides a kind of auto gain control method based on stenode circuit, and described stenode circuit comprises:
The Anneta module be sequentially connected in series, filter, low noise amplifier, gain amplifier, frequency mixer, variable gain amplifier, analog to digital converter, processor and the automatic gain control equipment arranged between the output and input of described variable gain amplifier;
Described automatic gain control equipment comprises:
The wave detector be connected in series and voltage comparison module;
Described method comprises:
Described wave detector detects the size of described variable gain amplifier output signal, obtains detecting circuit;
Described detecting circuit and reference voltage compare by described voltage comparison module, obtain difference voltage;
Described variable gain amplifier, according to described difference voltage, carries out Gain tuning.
Preferably, described automatic gain control equipment also comprises:
The voltage transformation module be connected with described voltage comparison module, described voltage comparison module connects the input of described variable gain amplifier by described voltage transformation module;
Described detecting circuit and reference voltage compare by described voltage comparison module, and after obtaining difference voltage, described method also comprises:
Described voltage transformation module exports described variable gain amplifier to after described difference voltage is added preset value, and wherein, what described difference voltage added that described preset value obtains is more than or equal to 0 with value;
Described variable gain amplifier, according to described difference voltage, carries out Gain tuning and comprises:
What according to described difference voltage, described variable gain amplifier added that described preset value obtains carries out Gain tuning with value.
Known via above-mentioned technical scheme, compared with prior art, this application provides a kind of automatic gain control equipment and stenode circuit of stenode circuit, this automatic gain control equipment is made up of wave detector and voltage comparison module, detected by the output voltage of wave detector by the variable gain amplifier in stenode circuit, obtain detecting circuit, by voltage comparison module, detecting circuit and reference voltage are compared, obtain a difference voltage, export variable gain amplifier to again, namely variable gain amplifier can carry out gain control according to this difference voltage, realize automatically regulating variable gain amplifier to input to the signal gain of analog-to-digital conversion module, the automatic growth control of the embodiment of the present application is realized by pure hardware mode, reduce algorithm and do not restrain the risk caused, improve stability and the fail safe of system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only the embodiment of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of an automatic gain control equipment embodiment of the stenode circuit that Fig. 1 provides for the embodiment of the present application;
The structural representation of another embodiment of automatic gain control equipment of the stenode circuit that Fig. 2 provides for the embodiment of the present application;
The structural representation of the stenode circuit embodiment that Fig. 3 provides for the embodiment of the present application;
The flow chart of a kind of auto gain control method embodiment that Fig. 4 provides for the embodiment of the present application;
The flow chart of a kind of another embodiment of auto gain control method that Fig. 5 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
A kind of automatic gain control equipment of stenode circuit of the embodiment of the present application, this automatic gain control equipment is made up of wave detector and voltage comparison module, detected by the output voltage of wave detector by the variable gain amplifier in stenode circuit, obtain detecting circuit, by voltage comparison module, detecting circuit and reference voltage are compared, obtain a difference voltage, export variable gain amplifier to again, namely variable gain amplifier can carry out gain control according to this difference voltage, realize automatically regulating variable gain amplifier to input to the signal gain of analog-to-digital conversion module, the automatic growth control of the embodiment of the present application is realized by pure hardware mode, reduce algorithm and do not restrain the risk caused, improve stability and the fail safe of system.
The structural representation of an automatic gain control equipment embodiment of the stenode circuit that Fig. 1 provides for the embodiment of the present application.
In the embodiment of the present application, this stenode circuit 100 at least comprises variable gain amplifier (VGA, variable gain amplifier), analog to digital converter (ADC, analog to digital converter) and processor, VGA and ADC, connects, ADC connection handling device.
Wherein stenode circuit also must comprise other some parts, to realize the amplification, frequency conversion, filtering etc. to signal, same as the prior art, is no longer described in detail in the present embodiment.
The analog signal that VGA exports, after ADC is converted to digitized signal, is processed by processor.
In the present embodiment, the voltage comparison module 102 that this automatic gain control equipment can comprise wave detector 101 and be connected with described wave detector 101.
Wherein, wave detector 101 input connects the output of the VGA in stenode circuit 100, and output connects voltage comparison module 102.The output of voltage comparison module 102 input tie geophone 101, output connects the input of this VGA.
Wave detector 101, by carrying out detection process to VGA output signal, can obtain detecting circuit.Namely the height of this detecting circuit value can reflect the intensity of the signal that stenode circuit 100 receives, and signal is stronger, and detecting circuit is larger, and signal is more weak, and detecting circuit is less.
The detecting circuit that voltage comparison module 102 obtains according to wave detector 101, compares itself and reference voltage, obtains difference voltage.
The size of this difference voltage illustrates the gap of detecting circuit and reference voltage, VGA can carry out gain-adjusted according to the size of this difference voltage, when signal is stronger, detecting circuit is larger, the difference of itself and reference voltage is namely larger, now, according to difference voltage, namely VGA can reduce gain automatically, to reduce the signal strength signal intensity that ADC receives; If signal is more weak, detecting circuit can be less, if detecting circuit is lower than reference voltage, by comparing the difference voltage obtained with reference voltage, namely VGA can increase gain automatically, to improve the signal strength signal intensity that ADC receives.Thus the object of automatic growth control can be reached by the automatic ride gain control device of the embodiment of the present application.
In the present embodiment, automatic growth control is realized by hardware mode, thus the problem that the algorithm of processor employing algorithm realization automatic growth control can be avoided not restrain, stability and the fail safe of system can be improved, improve response speed.And automatic growth control carried out before ADC analog-to-digital conversion in the present embodiment, ADC can not be made saturated when signal can be avoided to arrive ADC, ADC also can not be made can not to differentiate the problem of this signal.
Wherein, voltage comparison module can be specially a subtracter, and two inputs of subtracter input detecting circuit and reference voltage, respectively to compare.
This reference voltage can adjust according to actual conditions.
Wherein, voltage comparison module can also connect a difference amplifier, and for amplified differences voltage, input value VGA again after difference amplifier amplified differences voltage, carries out gain-adjusted to facilitate VGA.
Wherein, carry out gain-adjusted to further facilitate variable gain amplifier, as shown in Figure 2, this voltage comparison module can also pass through a voltage transformation module 103, then connects the input of VGA.
This voltage transformation module 103 exports VGA to after difference voltage is added preset value.What difference voltage added that preset value obtains is more than or equal to 0 with value.Difference voltage is added preset value, is the regulation voltage scope in order to adaptive VGA.
Voltage comparator obtains the time that difference voltage is specially that detecting circuit deducts that reference voltage obtains, this difference voltage may be on the occasion of, also may be negative value, if detecting circuit is greater than reference voltage, then difference voltage be on the occasion of, if detecting circuit is less than reference voltage, then difference voltage is negative value.
The conveniently adjustment of VGA, after difference voltage can being added preset value, obtains one and value, and the setting of this preset value needs guarantee and value to be all more than or equal to 0, thus can facilitate the adjustment of VGA.
The voltage regulation limits of VGA, what can add that this preset value obtains according to this reference voltage sets as fiducial value with value.
When detecting circuit is greater than reference voltage, need to reduce VGA gain, obtain after adding preset value according to difference voltage and value, VGA according to the voltage-regulation voltage range of correspondence, reduction gain.
When detecting circuit is less than reference voltage, need to improve VGA gain, obtain after adding preset value according to difference voltage and value, VGA according to the voltage-regulation voltage range of correspondence, raising gain.
Wherein, this voltage transformation module can be specially a DC bias circuit, difference voltage can be added a preset value by DC bias circuit.
Certainly, this voltage transformation module also can adopt an adder, and two inputs of adder input difference voltage and preset value, respectively to compare.
Wherein, what this preset value demand fulfillment difference voltage added that preset value obtains is more than or equal to 0 with value.According to practical situations, can adjust.
This preset value can preset, thus namely the voltage regulation limits of VGA also can be determined,
As shown in Figure 3, the embodiment of the present application additionally provides a kind of stenode circuit, and this circuit can comprise:
The Anneta module 201 be sequentially connected in series, filter 202, low noise amplifier 203, gain amplifier 204, frequency mixer 205, VGA206, ADC207, processor 208 and the automatic gain control equipment 200 arranged between the output and input of described VGA206.
This automatic gain control equipment 200 structure can specifically as shown in Figure 1.
Its voltage comparison module 102 that can comprise wave detector 101 and be connected with described wave detector 101.
Wave detector 101, by carrying out detection process to VGA206 output signal, can obtain detecting circuit.Namely the height of this detecting circuit value can reflect the intensity of the signal that stenode circuit 100 receives, and signal is stronger, and detecting circuit is larger, and signal is more weak, and detecting circuit is less.
The detecting circuit that voltage comparison module 102 obtains according to wave detector 101, compares itself and reference voltage, obtains difference voltage.
VGA206 carries out gain-adjusted according to the size of this difference voltage.
And as another embodiment, this automatic gain control equipment 200 structure can specifically as shown in Figure 2, also be automatic gain control equipment as shown in Figure 3.
This automatic gain control equipment 200 can also comprise a voltage transformation module 103.
Voltage comparator obtains the time that difference voltage is specially that detecting circuit deducts that reference voltage obtains, this difference voltage may be on the occasion of, also may be negative value, if detecting circuit is greater than reference voltage, then difference voltage be on the occasion of, if detecting circuit is less than reference voltage, then difference voltage is negative value.
In order to the gain-adjusted of adaptive VGA, after difference voltage can being added preset value, export VGA by what obtain to value by voltage transformation module 103, the setting of this preset value need ensure that any one obtaining is with value and be more than or equal to 0.
Thus VGA specifically adds preset value obtains and value according to difference voltage, carries out gain-adjusted, by difference voltage being converted to the numerical value being more than or equal to 0, VGA conveniently can arrange voltage regulation limits, conveniently can carry out Gain tuning.
When signal is stronger, detecting circuit is larger, and the difference of itself and reference voltage is namely larger, and now, namely VGA can reduce gain automatically, to reduce the signal strength signal intensity that ADC receives; If signal is more weak, detecting circuit can be less, if detecting circuit is lower than reference voltage, by comparing the difference voltage obtained with reference voltage, namely VGA can increase gain automatically, to improve the signal strength signal intensity that ADC receives.Thus the object of automatic growth control can be reached by the automatic ride gain control device of the embodiment of the present application.
In the present embodiment, automatic growth control is realized by hardware mode, thus the problem that the algorithm of processor employing algorithm realization automatic growth control can be avoided not restrain, stability and the fail safe of system can be improved, improve response speed.And automatic growth control carried out before ADC analog-to-digital conversion in the present embodiment, ADC can not be made saturated when signal can be avoided to arrive ADC, ADC also can not be made can not to differentiate the problem of this signal.
Based on the stenode circuit that the embodiment of the present application provides, the embodiment of the present application additionally provides a kind of auto gain control method based on stenode circuit, and the structure of this stenode circuit can be as shown in Figure 3.
As shown in Figure 4, the method can comprise following step:
401: wave detector detects the size of variable gain amplifier output signal, obtain detecting circuit.
402: described detecting circuit and reference voltage compare by voltage comparison module, obtain difference voltage.
403: variable gain amplifier, according to described difference voltage, carries out Gain tuning.
In the embodiment of the present application, the automatic growth control of stenode circuit is realized by hardware mode, thus the problem that the algorithm of processor employing algorithm realization automatic growth control can be avoided not restrain, stability and the fail safe of system can be improved, improve response speed.And automatic growth control carried out before ADC analog-to-digital conversion in the present embodiment, ADC can not be made saturated when signal can be avoided to arrive ADC, ADC also can not be made can not to differentiate the problem of this signal.
Wherein, conveniently VGA carries out voltage-regulation, when the automatic gain control equipment of this stenode circuit can also comprise a voltage transformation module, as another embodiment, as shown in Figure 4, the auto gain control method provided for the embodiment of the present application can comprise;
501: wave detector detects the size of variable gain amplifier output signal, obtain detecting circuit.
502: described detecting circuit and reference voltage compare by voltage comparison module, obtain difference voltage.
503: voltage transformation module exports described variable gain amplifier to after described difference voltage is added preset value.
Wherein, what described difference voltage added that described preset value obtains is more than or equal to 0 with value.
504: what according to described difference voltage, variable gain amplifier added that described preset value obtains carries out Gain tuning with value.
Voltage comparator obtains the time that difference voltage is specially that detecting circuit deducts that reference voltage obtains, this difference voltage may be on the occasion of, also may be negative value, if detecting circuit is greater than reference voltage, then difference voltage be on the occasion of, if detecting circuit is less than reference voltage, then difference voltage is negative value.
The conveniently adjustment of VGA, after difference voltage can being added preset value, obtains one and value, and the setting of this preset value ensures that any one obtaining all is more than or equal to 0 with value, thus can facilitate the adjustment of VGA.
In the embodiment of the present application, the automatic growth control of stenode circuit is realized by hardware mode, thus the problem that the algorithm of processor employing algorithm realization automatic growth control can be avoided not restrain, stability and the fail safe of system can be improved, improve response speed.And automatic growth control carried out before ADC analog-to-digital conversion in the present embodiment, ADC can not be made saturated when signal can be avoided to arrive ADC, ADC also can not be made can not to differentiate the problem of this signal.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. an automatic gain control equipment for stenode circuit, is characterized in that, comprising:
Wave detector and the voltage comparison module be connected with described wave detector;
Described wave detector connects the output of the variable gain amplifier of described stenode circuit, detects the size of described variable gain amplifier output signal, obtains detecting circuit;
Described voltage comparison module connects the input of the variable gain amplifier of described stenode circuit, described detecting circuit and reference voltage are compared, obtain difference voltage, export described variable gain amplifier to, so that described variable gain amplifier carries out Gain tuning according to described difference voltage.
2. device according to claim 1, is characterized in that, also comprises:
The voltage transformation module be connected with described voltage comparison module, described voltage comparison module connects the input of described variable gain amplifier by described voltage transformation module;
Described voltage transformation module exports described variable gain amplifier to after described difference voltage is added preset value, and wherein, what described difference voltage added that described preset value obtains is more than or equal to 0 with value;
What according to described difference voltage, described variable gain amplifier specifically added that described preset value obtains carries out Gain tuning with value.
3. device according to claim 2, is characterized in that, described voltage transformation module is DC bias circuit.
4. a stenode circuit, is characterized in that, comprising:
The Anneta module be sequentially connected in series, filter, low noise amplifier, gain amplifier, frequency mixer, variable gain amplifier, analog to digital converter, processor and the automatic gain control equipment arranged between the output and input of described variable gain amplifier;
Described automatic gain control equipment comprises:
The wave detector be connected in series and voltage comparison module;
Described wave detector connects the output of the variable gain amplifier of described stenode circuit, detects the size of described variable gain amplifier output signal, obtains detecting circuit;
Described voltage comparison module connects the input of the variable gain amplifier of described stenode circuit, described detecting circuit and reference voltage is compared, and obtains difference voltage;
Described variable gain amplifier, according to described difference voltage, carries out Gain tuning.
5. circuit according to claim 4, is characterized in that, described automatic gain control equipment also comprises:
The voltage transformation module be connected with described voltage comparison module, described voltage comparison module connects the input of described variable gain amplifier by described voltage transformation module;
Described voltage transformation module exports described variable gain amplifier to after described difference voltage is added preset value, and wherein, what described difference voltage added that described preset value obtains is more than or equal to 0 with value;
What according to described difference voltage, described variable gain amplifier specifically added that described preset value obtains carries out Gain tuning with value.
6. circuit according to claim 5, is characterized in that, described voltage transformation module is DC bias circuit.
7. based on an auto gain control method for stenode circuit, it is characterized in that, described stenode circuit comprises:
The Anneta module be sequentially connected in series, filter, low noise amplifier, gain amplifier, frequency mixer, variable gain amplifier, analog to digital converter, processor and the automatic gain control equipment arranged between the output and input of described variable gain amplifier;
Described automatic gain control equipment comprises:
The wave detector be connected in series and voltage comparison module;
Described method comprises:
Described wave detector detects the size of described variable gain amplifier output signal, obtains detecting circuit;
Described detecting circuit and reference voltage compare by described voltage comparison module, obtain difference voltage;
Described variable gain amplifier, according to described difference voltage, carries out Gain tuning.
8. method according to claim 7, is characterized in that, described automatic gain control equipment also comprises:
The voltage transformation module be connected with described voltage comparison module, described voltage comparison module connects the input of described variable gain amplifier by described voltage transformation module;
Described detecting circuit and reference voltage compare by described voltage comparison module, and after obtaining difference voltage, described method also comprises:
Described voltage transformation module exports described variable gain amplifier to after described difference voltage is added preset value, and wherein, what described difference voltage added that described preset value obtains is more than or equal to 0 with value;
Described variable gain amplifier, according to described difference voltage, carries out Gain tuning and comprises:
What according to described difference voltage, described variable gain amplifier added that described preset value obtains carries out Gain tuning with value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072613.0A CN104639081A (en) | 2015-02-11 | 2015-02-11 | Automatic gain control device of superheterodyne receiving circuit and superheterodyne receiving circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510072613.0A CN104639081A (en) | 2015-02-11 | 2015-02-11 | Automatic gain control device of superheterodyne receiving circuit and superheterodyne receiving circuit |
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| CN105959017A (en) * | 2016-06-28 | 2016-09-21 | 中国科学院微电子研究所 | Automatic gain control circuit and method and software radio receiver adopting automatic gain control circuit |
| CN106200751A (en) * | 2016-08-15 | 2016-12-07 | 中国电子科技集团公司第四十研究所 | A kind of intermediate-freuqncy signal Power auto-adjustment circuit and method |
| CN108426857A (en) * | 2018-03-25 | 2018-08-21 | 济南大学 | A kind of WMS signal stabilizations special circuit |
| CN111478705A (en) * | 2019-12-31 | 2020-07-31 | 南京中科晶上通信技术有限公司 | Gain control method, device and circuit based on receiver and receiver |
| CN111786691A (en) * | 2020-07-13 | 2020-10-16 | 北京百瑞互联技术有限公司 | Automatic gain control method and system of receiver |
| CN112564726A (en) * | 2020-11-25 | 2021-03-26 | 电子科技大学 | Receiver broadband large dynamic automatic gain control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105959017A (en) * | 2016-06-28 | 2016-09-21 | 中国科学院微电子研究所 | Automatic gain control circuit and method and software radio receiver adopting automatic gain control circuit |
| CN106200751A (en) * | 2016-08-15 | 2016-12-07 | 中国电子科技集团公司第四十研究所 | A kind of intermediate-freuqncy signal Power auto-adjustment circuit and method |
| CN106200751B (en) * | 2016-08-15 | 2018-02-16 | 中国电子科技集团公司第四十一研究所 | A kind of intermediate-freuqncy signal Power auto-adjustment circuit and method |
| CN108426857A (en) * | 2018-03-25 | 2018-08-21 | 济南大学 | A kind of WMS signal stabilizations special circuit |
| CN111478705A (en) * | 2019-12-31 | 2020-07-31 | 南京中科晶上通信技术有限公司 | Gain control method, device and circuit based on receiver and receiver |
| CN111478705B (en) * | 2019-12-31 | 2023-07-04 | 南京中科晶上通信技术有限公司 | Gain control method, device and circuit based on receiver and receiver |
| CN111786691A (en) * | 2020-07-13 | 2020-10-16 | 北京百瑞互联技术有限公司 | Automatic gain control method and system of receiver |
| CN112564726A (en) * | 2020-11-25 | 2021-03-26 | 电子科技大学 | Receiver broadband large dynamic automatic gain control circuit |
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Application publication date: 20150520 |
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