CN108418562A - Microwave resonance amplification device and system - Google Patents

Abstract

The invention provides a microwave resonance amplification device and system, and relates to the technical field of signal processing devices. In the microwave resonant amplifying device in the embodiment of the present application, the input signal is first amplified by the amplifier and then resonantly amplified by the resonator, so that the microwave resonant amplifying device can obtain similar gains at both high and low frequencies. The signal processed by the microwave resonant amplifying device can have higher gain, and the microwave resonant amplifying device has better out-of-band suppression characteristics. When designing printed circuit boards, there is no need to consider the impact of insertion loss on the system noise system, and it is not necessary to design peripheral circuits. The design structure can be simpler, the design process can be simpler, and the design efficiency can be improved. smaller.

Description

Microwave resonance amplification device and system

technical field

The present invention relates to the technical field of signal processing devices, in particular to a microwave resonant amplification device and system.

Background technique

When processing the signal, it is hoped that the interference signal in the signal can be reduced and the noise in the system can be reduced. However, during signal processing, it often happens that interfering signals cannot be suppressed to usable levels.

Contents of the invention

In view of this, the present invention provides a microwave resonant amplification device and system, which can achieve better signal processing.

The technical scheme provided by the invention is as follows:

A microwave resonance amplifying device, comprising: at least one resonant amplifying component, the resonant amplifying component comprising:

a first amplifier for amplifying the external signal obtained through the input terminal;

A first resonant filter connected to the output end of the amplifier for resonating and filtering the amplified external signal; wherein, the input end of the first amplifier is used as the input end of the resonant amplifying component, The output terminal of the first amplifier is used as the output terminal of the resonant amplifying component, and when there are multiple resonant amplifying components, the multiple resonant amplifying components are connected in cascade.

Further, the resonant amplifier component also includes:

a second amplifier connected to the output end of the first resonator, the second amplifier is used to amplify and output the external signal resonantly amplified by the first resonator;

A second resonator connected to the output end of the second amplifier, the second resonator is used to resonantly amplify the output signal of the second amplifier and output it, when the resonant amplifying component includes a first amplifier, In the case of the first resonator, the second amplifier and the second resonator, the output end of the second resonator is used as the output end of the resonant amplifying component.

Further, the resonant amplifier component also includes:

A third amplifier connected to the output end of the second amplifier, the third amplifier is used to amplify and output the external signal resonantly amplified by the second resonator; the resonant amplifying component includes a first amplifier , the first resonator, the second amplifier, the second resonator and the third amplifier, the output terminal of the third amplifier is used as the output terminal of the resonant amplifying component.

Further, the resonant amplifier component also includes:

A third resonator connected to the output end of the third amplifier, the third resonator is used to resonantly amplify the output signal of the third amplifier and output it, when the resonant amplifying component includes the first amplifier, In the case of the first resonator, the second amplifier, the second resonator, the third amplifier and the third resonator, the output terminal of the third resonator is used as the output terminal of the resonance amplification component.

Further, the frequency response curves of the first amplifier and the first resonator are complementary, and the model of the first amplifier is MGA-86563.

Further, the frequency response curves of the second amplifier and the second resonator are complementary.

Further, the model of the second amplifier is MGA-86563.

Further, the frequency response curves of the third amplifier and the third resonator are complementary.

Further, the model of the third amplifier is MGA-86563.

The present invention also provides a microwave resonant amplifying system, comprising a plurality of the above-mentioned microwave resonant amplifying devices.

The microwave resonant amplifying device in the embodiment of the present application has a simple structure. The input signal can be amplified by the amplifier first, and then resonantly amplified by the resonator, so that the microwave resonant amplifying device can obtain similar gains at high and low frequencies. The signal processed by the microwave resonant amplifying device can have higher gain, and the microwave resonant amplifying device has better out-of-band suppression characteristics. When designing printed circuit boards, there is no need to consider the impact of insertion loss on the system noise system, and it is not necessary to design peripheral circuits. The design structure can be simpler, the design process can be simpler, the design efficiency can be improved, and the occupied area of the circuit board is reduced. smaller.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of a microwave resonance amplifying device provided by an embodiment of the present invention.

Fig. 2 is a schematic diagram of another microwave resonance amplifying device provided by an embodiment of the present invention.

Fig. 3 is a schematic circuit diagram of a microwave resonant amplifying device provided by an embodiment of the present invention.

Fig. 4 is a schematic diagram of another microwave resonance amplifying device provided by an embodiment of the present invention.

Icons: 10-microwave resonance amplifier; 100-resonance amplifier component; 101-first amplifier; 102-first resonator; 103-second amplifier; 104-second resonator; 105-third amplifier; 106-the first Three resonators.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

The inventor found that when the signal is processed by first filtering and then amplifying, the insertion loss of the filter itself will affect the noise figure of the entire signal processing system. If the filter has an insertion loss of 1dB, the noise figure of the system will decrease. With an increase of 1dB, such a signal processing system causes the insertion loss of the filter to be directly added to the system noise, thereby seriously affecting the signal-to-noise ratio of the signal.

In view of this, the embodiment of the present application provides a microwave resonance amplification device 10, including at least one resonance amplification component 100, as shown in FIG. 1, the resonance amplification component 100 includes a first amplifier 101 and a first resonator 102.

The first amplifier 101 is used to amplify the external signal obtained through the input terminal. The first resonant filter is connected to the output terminal of the amplifier, and is used for resonating and filtering the amplified external signal for output. The first amplifier 101 can amplify the input signal, and the first resonator 102 is arranged behind the output end of the first amplifier 101, and the input signal of the first resonator 102 is amplified by the first amplifier 101, so that the input signal After being amplified by the first amplifier 101, and then resonantly amplified by the first resonator 102, the frequency band suppression degree of the signal output by the first resonator 102 is higher than that of the purely amplified signal, and at the same time , the loss of the signal output by the first resonator 102 is also lower than the loss of the signal filtered by the filter. In this way, after the input signal is amplified by the first amplifier 101 and resonantly amplified by the second resonator 104, an output signal with lower noise and higher gain can be obtained, so that the useful signal can be amplified after the input signal is processed, Interfering signals are suppressed to a certain extent.

When the microwave resonant amplifying device 10 includes multiple resonant amplifying components 100, the multiple resonant amplifying components 100 are connected in cascade. For example, when the microwave resonant amplifying device 10 includes three resonant amplifying assemblies 100, the input end of one resonant amplifying assembly 100 is used to receive the input signal, and the output end of the resonant amplifying assembly 100 is connected to the input end of the next resonant amplifying assembly 100 . The output end of the second resonant amplifying component 100 is connected to the input end of the third resonant amplifying component 100 , and the output end of the third resonant amplifying component 100 serves as the output end of the whole microwave resonant amplifying device 10 .

In this way, the microwave resonant amplifying device 10 includes a plurality of resonant amplifying components 100, after the input signal is processed by the first amplifier 101 and the first resonator 102 in the first resonant amplifying component 100, the interference signal in the input signal is suppressed to To a certain extent. However, there may be such a situation. After only one amplifier and one resonator are processed, although the interference signal in the input signal has been suppressed, it has not been suppressed to an acceptable level. If only one resonant amplifying component 100 is used, the quality of the input signal still cannot meet the requirements. If such an input signal is input to other systems, the noise of the interference signal will affect the normal operation of other systems. Based on this, as shown in FIG. 2 , the microwave resonant amplifying device 10 in the embodiment of the present application may include a plurality of resonant amplifying components 100, and through the continuous processing of the input signal by the multiple resonant amplifying components 100, the input signal can be continuously suppressed. The noise of the processed input signal can meet the signal requirements of other systems. As shown in FIG. 3 , FIG. 3 is a circuit diagram in a cascaded state of multiple resonant amplifying components.

It can be understood that the frequency responses of the first amplifier 101 and the first resonator 102 in the resonant amplifying component 100 can be designed to be complementary, so that the microwave resonant amplifying device 10 can obtain similar gains at high and low frequencies. As mentioned earlier, the scheme of filtering first and then amplifying will seriously affect the signal-to-noise ratio of the system. Compared with such a solution, the microwave resonance amplifying device 10 in the embodiment of the present application adopts the form of at least one resonant amplifying component 100, and the signal in the resonant amplifying component 100 is first amplified by the amplifier, and then processed by the resonator, which will When the resonator is placed behind the amplifier, as long as the amplifier has sufficient gain, for example, the amplifier has a gain of more than 10dB, then the insertion loss of the resonator can be reduced to negligible for the image of the system noise, and the influence on the signal-to-noise ratio is also negligible. It can be ignored to achieve the purpose of amplifying the useful signal and suppressing the interference signal.

In addition, the inventors also found that in the signal processing system that first filters and then amplifies, the necessary processing system can only process signals with a lower frequency and a narrow bandwidth. When receiving a radio frequency microwave signal in a certain frequency band, Because of the frequency response of the amplifier, the gain in the high frequency band is generally low, while the gain in the low frequency band is high. If the signal is filtered first and then amplified, then limited by noise considerations, the in-band frequency response curve of the filter itself can only be a horizontal straight line, and the filter cannot compensate the frequency response of the amplifier.

With the microwave resonant amplifying device 10 in the embodiment of the present application, the input signal is first amplified by the amplifier and then resonantly amplified by the resonator, so that the microwave resonant amplifying device 10 can obtain similar gains at both high and low frequencies.

On the other hand, the amplifier in the microwave resonant amplifying device 10 works in a resonant state, and the amplification gain will be higher than that in the non-resonant amplifying state, and can produce a good out-of-band suppression effect, so that the microwave resonant amplifying device 10 The processed signal can have a higher gain, so that the microwave resonant amplifying device 10 has better out-of-band suppression characteristics.

On the other hand, when designing a signal processing system on a printed circuit board, if the scheme of filtering first and then amplifying is adopted, since the insertion loss of the filter needs to be considered, it is necessary to design a corresponding circuit in order to reduce the insertion loss of the filter , the design is more difficult, and it will increase the occupied area of the signal processing system on the printed circuit board. And adopt the microwave resonant amplifying device 10 among the present application as signal processing system, when carrying out the design of printed circuit board, need not consider the impact of insertion loss on system noise system, needn't design peripheral circuit, design structure can be more simple, design The process can be simplified, improving design efficiency, and occupying less area on the circuit board.

Wherein, the input terminal of the first amplifier 101 is used as the input terminal of the resonant amplifying component 100, the output terminal of the first amplifier 101 is used as the output terminal of the resonant amplifying component 100, and the resonant amplifying component 100 is multiple In this case, multiple resonant amplifying components 100 are connected in cascade.

It can be understood that when the microwave resonant amplifying device 10 includes multiple resonant amplifying components 100, the multiple resonant amplifying components 100 are connected in cascade. The noise figure of the whole device can be calculated by the following formula:

Wherein, Fn is the noise of each resonant amplifying component 100, Gn is the gain, and Ftotal is the total noise of the whole device.

It can be seen from the above formula that the noise of the first-stage resonant amplifying component 100 is directly added to the total noise, the noise of the second-stage resonant amplifying component 100 is to be subtracted by 1 and divided by the gain of the first stage, and the third-stage resonant The noise of the amplifying component 100 is also subtracted by 1 and divided by the product of the first-stage resonant amplifying component 100 and the second-stage resonant amplifying component 100 . By analogy, it can be seen from the formula that the total noise of the entire device is mainly generated in the first few stages of resonant amplifying components 100 , and later with the increase in the number of cascaded resonant amplifying components 100 . As the gain gets higher and higher, the proportion of noise becomes lower and lower, even negligible. The microwave resonant amplifying device 10 in the embodiment of the present application increases the gain of the first-stage resonant amplifying assembly 100 while not increasing the noise of the first-stage resonant amplifying assembly 100 by first amplifying and then resonantly amplifying, although at the same time it increases The noise of the second-stage resonant amplifying component 100 is reduced, but the increased noise is very low relative to the gain, thereby reducing the total noise of the microwave resonant amplifying device 10 .

In another specific implementation manner, as shown in FIG. 4 , the resonant amplifier component 100 may further include a second amplifier 103 and a second resonator 104 .

The second amplifier 103 is connected to the output end of the first resonator 102 , and the second amplifier 103 is used to amplify and output the external signal resonantly amplified by the first resonator 102 .

The second resonator 104 is connected to the output end of the second amplifier 103, and the second resonator 104 is used for resonantly amplifying the output signal of the second amplifier 103 and outputting it, when the resonant amplifying component 100 When the first amplifier 101 , the first resonator 102 , the second amplifier 103 and the second resonator 104 are included, the output terminal of the second resonator 104 is used as the output terminal of the resonant amplifying component 100 .

When the resonant amplifying component 100 includes an amplifier and a resonator, it is necessary to cascade multiple resonant amplifying components 100 to achieve better signal processing effect. By reconfiguring the second amplifier 103 and the second resonator 104 in the resonant amplifying component 100 , in order to achieve a better signal processing effect, it is not necessary to implement cascade connection of multiple resonant amplifying components 100 .

It can be understood that, in order to achieve a better signal processing effect. The resonant amplifying component 100 may further include: a third amplifier 105 connected to the output end of the second amplifier 103, the third amplifier 105 is used for resonantly amplifying the external signal passed through the second resonator 104 Amplify and output; when the resonant amplifier assembly 100 includes a first amplifier 101, a first resonator 102, a second amplifier 103, a second resonator 104 and a third amplifier 105, the output terminal of the third amplifier 105 is used as The output end of the resonant amplifying component 100 .

The resonant amplifying component 100 may further include: a third resonator 106 connected to the output end of the third amplifier 105, the third resonator 106 is used to resonantly amplify the output signal of the third amplifier 105 and output, when the resonant amplification component 100 includes the first amplifier 101, the first resonator 102, the second amplifier 103, the second resonator 104, the third amplifier 105 and the third resonator 106, the third The output terminal of the resonator 106 is used as the output terminal of the resonant amplification component 100 .

In the embodiment of the present application, the model of the first amplifier 101 may be MGA-86563.

It can be understood that the frequency response curves of the second amplifier 103 and the second resonator 104 are complementary, so that the microwave resonance amplifying device 10 can obtain similar gains at both high and low frequencies. The model of the second amplifier 103 may be MGA-86563.

It can be understood that the frequency response curves of the third amplifier 105 and the third resonator 106 are complementary, so that the microwave resonant amplifying device 10 can obtain similar gains at both high and low frequencies. The model of the third amplifier 105 may be MGA-86563.

To sum up, the microwave resonant amplifying device in the embodiment of the present application can obtain similar gains at both high and low frequencies through the input signal being amplified by the amplifier first and then resonantly amplified by the resonator. The signal processed by the microwave resonant amplifying device can have higher gain, and the microwave resonant amplifying device has better out-of-band suppression characteristics. When designing printed circuit boards, there is no need to consider the impact of insertion loss on the system noise system, and it is not necessary to design peripheral circuits. The design structure can be simpler, the design process can be simpler, the design efficiency can be improved, and the occupied area of the circuit board is reduced. smaller.

The present invention also provides a microwave resonant amplifying system, comprising a plurality of the above-mentioned microwave resonant amplifying devices.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. a kind of microwave resonance amplifying device, which is characterized in that including：At least one resonance amplifier module, the resonance amplification Component includes：

The first amplifier for that will be amplified by the external signal that input terminal obtains；

It is connect with the output end of the amplifier, for resonance and to being filtered the of output by amplified external signal One resonance filter；Wherein, input terminal of the input terminal of first amplifier as the resonance amplifier module, described first Output end of the output end of amplifier as the resonance amplifier module, it is multiple described when the resonance amplifier module is multiple Resonance amplifier module cascade Connection.

2. microwave resonance amplifying device according to claim 1, which is characterized in that the resonance amplifier module further includes：

The second amplifier being connect with the output end of first resonator, second amplifier are used for passing through described first The amplified external signal of resonator resonance is amplified and exports；

The second resonator being connect with the output end of second amplifier, second resonator are used for second amplification The output signal of device is carried out after resonance amplification and is exported, when the resonance amplifier module include the first amplifier, the first resonator, When the second amplifier and the second resonator, the output end of the output end of second resonator as the resonance amplifier module.

3. microwave resonance amplifying device according to claim 2, which is characterized in that the resonance amplifier module further includes：

The third amplifier being connect with the output end of second amplifier, the third amplifier are used for passing through described second The amplified external signal of resonator resonance is amplified and exports；The resonance amplifier module includes the first amplifier, first When resonator, the second amplifier, the second resonator and third amplifier, the output end of the third amplifier is as the resonance The output end of amplifier module.

4. microwave resonance amplifying device according to claim 3, which is characterized in that the resonance amplifier module further includes：

The third resonator being connect with the output end of the third amplifier, the third resonator are used to amplify the third The output signal of device is carried out after resonance amplification and is exported, when the resonance amplifier module include the first amplifier, the first resonator, When the second amplifier, the second resonator, third amplifier and third resonator, described in the output end conduct of the third resonator The output end of resonance amplifier module.

5. microwave resonance amplifying device according to any one of claims 1 to 4, which is characterized in that first amplification The frequency response curve of device and first resonator is complementary, the model MGA-86563 of first amplifier.

6. microwave resonance amplifying device according to claim 4, which is characterized in that second amplifier and described second The frequency response curve of resonator is complementary.

7. microwave resonance amplifying device according to claim 4, which is characterized in that the model of second amplifier MGA-86563。

8. microwave resonance amplifying device according to claim 4, which is characterized in that the third amplifier and the third The frequency response curve of resonator is complementary.

9. microwave resonance amplifying device according to claim 4, which is characterized in that the model of the third amplifier MGA-86563。

10. a kind of microwave resonance amplification system, which is characterized in that including the microwave described in multiple claim 1 to 9 any one Resonance amplification device.