A low-noise amplifier circuit, chip, and electronic device

Abstract

The present application provides a low-noise amplifier circuit, a chip and an electronic device. The low-noise amplifier circuit includes: a first processing module, configured to amplify an input voltage signal at an input end and convert it into at least two first current signals; a second processing module, configured to implement impedance matching at the input end of the low-noise amplifier circuit and amplify the input voltage signal at the input end and then convert it into at least two second current signals; a voltage output module, connected to the first processing module and the second processing module, configured to correspondingly combine the first current signal and the second current signal and then convert them into the output voltage signal. The low-noise amplifier circuit can implement the conversion of a single input voltage signal into at least two output voltage signals, and is applicable to scenarios where the radio frequency front end has multiple output ends.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and relates to a low-noise amplifier circuit, in particular to a low-noise amplifier circuit, a chip and an electronic device applicable to single-input multiple-output. Background Art

[0002] At present, radio frequency front-ends are increasingly designed to have multiple output terminals to receive signals on multiple channels simultaneously. For example, for a set top box (STB), receiving signals on two or more channels simultaneously allows the STB to implement functions such as picture-in-picture (PIP), personal video recording (PVR), and fast program switching. Therefore, more and more STBs are designed to have multiple tuners to receive signals on multiple channels simultaneously. However, traditional radio frequency front-ends can often only receive signals on a single channel, and thus the low-noise amplifier circuits used inside are also designed for radio frequency front-ends with single output terminals and are difficult to apply to scenarios with multiple output terminals. Therefore, how to design a low-noise amplifier circuit applicable to scenarios with multiple output terminals has become one of the problems that need to be urgently solved by professionals in this field. Summary of the Invention

[0003] The purpose of this application is to provide a low-noise amplifier circuit, a chip and an electronic device to solve the problem that the low-noise amplifier circuit used in the existing radio frequency front-end is difficult to apply to scenarios with multiple output terminals.

[0004] According to the first aspect of this application, a low-noise amplifier circuit is provided. The circuit has a single input terminal and at least two output terminals, and is used to amplify the input voltage signal at the input terminal and convert it into at least two output voltage signals, and each output voltage signal is output through the corresponding output terminal. The low-noise amplifier circuit includes: a first processing module, which is used to amplify the input voltage signal at the input terminal and convert it into at least two first current signals; a second processing module, which is used to achieve impedance matching at the input terminal of the low-noise amplifier circuit and is used to amplify the input voltage signal at the input terminal and convert it into at least two second current signals; a voltage output module, which is connected to the first processing module and the second processing module, and is used to correspondingly combine the first current signal and the second current signal and convert them into the output voltage signal; wherein, the number of the output voltage signals is the same as the number of the first current signals.

[0005] In some embodiments, the first processing module includes: a first amplifier for amplifying the input voltage signal at the input end to obtain a first voltage signal; at least two first transconductance stages connected to the first amplifier; and the at least two first transconductance stages for converting the first voltage signal into the at least two first current signals.

[0006] In some embodiments, the first amplifier includes: a third transconductance stage for converting the input voltage signal at the input end into a third current signal; a first MOSFET, with the gate and drain of the first MOSFET connected, and the gate of the first MOSFET connected to each of the first transconductance stages to form at least two current mirrors, and the drain of the first MOSFET connected to the third transconductance stage; and the first MOSFET forming the first voltage signal at its gate based on the third current signal.

[0007] In some embodiments, the second processing module includes: a matching and amplifying circuit for achieving impedance matching at the input end of the low-noise amplifier circuit, amplifying the input voltage signal at the input end to obtain a second voltage signal, converting the second voltage signal into a feedback signal and feeding it back to the input end; at least two second transconductance stages connected to the matching and amplifying circuit; and the second transconductance stages for converting the second voltage signal into the at least two second current signals.

[0008] In some embodiments, the matching and amplifying circuit includes: a second amplifier for amplifying the input voltage signal at the input end to obtain the second voltage signal; and a feedback circuit connected to the second amplifier and the input end for converting the second voltage signal into the feedback signal and feeding it back to the input end.

[0009] In some embodiments, the voltage output module includes: at least two current combining units respectively connected to the first processing module and the second processing module; the current combining units for correspondingly combining the first current signals and the second current signals to obtain a fourth current signal; where the number of the fourth current signals is the same as the number of the first current signals; at least two current-voltage conversion units respectively connected to the corresponding current combining units; and the at least two current-voltage conversion units for converting the fourth current signal into the output voltage signal.

[0010] In some embodiments, the first current signal and the second current signal are differential current signals; or the first current signal and the second current signal are single-ended current signals.

[0011] According to a second aspect of the present application, there is provided a chip, which includes the low-noise amplifier circuit described in the first aspect of the present application.

[0012] According to a third aspect of the present application, there is provided an electronic device, which includes the low-noise amplifier circuit described in the first aspect of the present application.

[0013] It can be seen that the low-noise amplifier circuit of the present application effectively amplifies the voltage at the input end through the first processing module and the second processing module respectively and converts it into multiple current signals, and the voltage output module adds the multiple current signals output by the first and second processing modules correspondingly and converts them into multiple output voltage signals to achieve the conversion from single-ended input to multi-ended output, realizing the simultaneous reception of multiple channels. The noise of the matching amplifier circuit in the second processing module, as the main noise source of the entire low-noise amplifier circuit, has opposite phases of the noise currents generated by the first and second processing modules, and all or part of the noise on each signal path can be eliminated after current combination. This enables the low-noise amplifier circuit of the present application to achieve good noise performance. The realization of noise cancellation of the matching amplifier circuit, the current mirror design in the first processing module, and the suppression of the noise of the second transconductance stage by the matching amplifier circuit in the second processing module enable the low-noise amplifier circuit of the present application to have a high degree of design freedom to achieve high linearity and low power consumption. In addition, the mutual influence between each signal path from input to output of the low-noise amplifier circuit of the present application is very small. Moreover, the noise amplifier circuit of the present application can achieve single-ended to differential conversion without using a balun, effectively reducing costs. The low-noise amplifier circuit described in the present application is particularly suitable for broadband scenarios and is a multi-output broadband low-noise amplifier with noise cancellation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It shows a schematic structural diagram of the low-noise amplifier circuit described in the present application in a specific embodiment.

[0015] Figure 2 It shows a schematic structural diagram of the first processing module of the low-noise amplifier circuit described in the present application in a specific embodiment.

[0016] Figure 3 It shows a schematic structural diagram of the first processing module of the low-noise amplifier circuit described in the present application in a specific embodiment.

[0017] Figure 4 It shows a schematic structural diagram of the second processing module of the low-noise amplifier circuit described in the present application in a specific embodiment.

[0018] Figure 5It shows a schematic diagram of the second processing module in a specific embodiment of the low-noise amplifier circuit described in this application.

[0019] Figure 6 It shows a schematic diagram of the low-noise amplifier circuit described in this application in a specific embodiment.

[0020] Figure 7A It shows a schematic diagram of the low-noise amplifier circuit described in this application in a specific embodiment.

[0021] Figure 7B It shows a schematic diagram of the first processing module in a specific embodiment of the low-noise amplifier circuit described in this application.

[0022] Figure 7C It shows a schematic diagram of the second processing module in a specific embodiment of the low-noise amplifier circuit described in this application.

[0023] Figure 8 It shows a schematic diagram of the chip described in this application in a specific embodiment.

[0024] Element number description

[0025] 1 Low-noise amplifier circuit

[0026] 11 First processing module

[0027] 111 First amplifier

[0028] 1111 Third transconductance stage

[0029] 1112 First MOSFET

[0030] 112 First transconductance stage

[0031] 12 Second processing module

[0032] 121 Matching and amplifying circuit

[0033] 1211 Second amplifier

[0034] 1212 Feedback circuit

[0035] 122 Second transconductance stage

[0036] 13 Voltage output module

[0037] 131 Current combining unit

[0038] 132 Current-voltage conversion unit Detailed implementation manners

[0039] The following specific examples illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0040] It should be noted that the diagrams provided in the following embodiments only schematically illustrate the basic concept of the present application. Therefore, only the components related to the present application are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex. In addition, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0041] Currently, radio frequency front-ends are increasingly designed to have multiple output terminals to receive signals on multiple channels simultaneously. However, traditional radio frequency front-ends can often only achieve signal reception on a single channel. Therefore, the low-noise amplifier circuits used inside are also designed for radio frequency front-ends with a single output terminal and are difficult to be applied to the scenario where the radio frequency front-end has multiple output terminals.

[0042] In order to achieve simultaneous signal reception on multiple channels, existing receiver systems usually use passive distributors, multiple SISO (single-input single-output) low-noise amplifiers, current splitting common-source low-noise amplifiers (Current Splitting Common-Source LNA), or voltage splitting topologies to achieve simultaneous reception of multiple signals. However, the problems existing in these existing methods make it difficult to be applied to the multi-output terminal scenario.

[0043] Although the passive distributor has good linearity, it will inevitably introduce signal loss, resulting in a reduction in the sensitivity of the entire receiver system. In addition, the passive distributor is usually a discrete component at the radio frequency input end, and implementing it on a chip will increase the chip area.

[0044] The structure of directly connecting multiple SISO low-noise amplifiers to the same radio frequency input end to generate multiple outputs will have problems of mutual influence between different receiving paths, especially problems in terms of impedance matching and noise performance.

[0045] Current splitting common source low noise amplifiers usually use source inductance degeneration to achieve impedance matching, which limits the application of this solution in broadband scenarios, and current splitting also deteriorates the noise performance of the circuit.

[0046] The voltage splitting topology is basically composed of cascaded voltage amplifiers. Among them, the first stage is a low noise amplifier at the RF input end, and the second stage is multiple voltage amplifiers or transconductances. Although this structure can achieve single input multiple output functions, cascading voltage amplifiers will limit the linearity performance of the circuit, resulting in large distortion in the circuit, and the low noise amplifier in the first stage still faces problems such as noise figure, impedance matching, and linearity.

[0047] In view of the above problems, the present application provides a low noise amplifier circuit that can realize the conversion of a single input voltage signal to at least two output voltage signals, so the low noise amplifier circuit can be applied to scenarios where the RF front end has multiple output terminals.

[0048] Please refer to Figure 1 In an embodiment of the present application, the low noise amplifier circuit 1 has a single input terminal and at least two output terminals, and is used to amplify the input voltage signal V IN at the input terminal and convert it into at least two output voltage signals, and each output voltage signal is output through the corresponding output terminal. The low noise amplifier circuit 1 includes a first processing module 11, a second processing module 12, and a voltage output module 13.

[0049] The first processing module 11 is used to amplify the input voltage signal V IN at the input terminal and convert it into at least two first current signals, such as I 1-1 , I 1-2 …I 1-n , where n is an integer greater than or equal to 2.

[0050] The second processing module 12 is used to achieve impedance matching at the input terminal of the low noise amplifier circuit 1, and is also used to amplify the input voltage signal V IN at the input terminal and convert it into at least two second current signals, such as I 2-1 , I 2-2 …I 2-n . Among them, the number of the second current signals is the same as that of the first current signals, and the second current signals correspond to the first current signals one by one. In this embodiment, the second processing module 12 can achieve the impedance matching in the same way as the existing low noise amplifier, and the specific method will not be elaborated here.

[0051] The voltage output module 13 is connected to the first processing module 11 and the second processing module 12, and is configured to convert the first current signal and the second current signal into the output voltage signal after corresponding combination. Specifically, the corresponding combination means that for any first current signal, the voltage output module 13 combines (such as superimposes) the first current signal of this path with its corresponding second current signal into one current signal, and converts the combined one current signal into one output voltage signal. For example, please refer to Figure 1 and Figure 6 , for the first current signal I 1-1 , its corresponding second current signal is I 2-1 , combine I 1-1 with I 2-1 to obtain a current signal I 4-1 . After the current signal I 4-1 flows through a load circuit such as a resistor, an output voltage signal V out-1 can be obtained.

[0052] According to the above description, it can be known that the low-noise amplifier circuit 1 described in this embodiment can amplify an input voltage signal at its input end to obtain multiple output voltage signals, so it can realize the conversion from single-ended input to multi-ended output, and is applicable to a radio frequency front end with multiple output ends.

[0053] Please refer to Figure 2 , in an embodiment of the present application, the first processing module 11 includes a first amplifier (A1) 111 and at least two first transconductance stages 112.

[0054] The first amplifier 111 is configured to amplify the input voltage signal V IN at the input end to obtain a first voltage signal V1. Preferably, the first amplifier 111 is a low-noise voltage amplifier.

[0055] The at least two first transconductance stages 112 are connected to the first amplifier 111 and are configured to convert the first voltage signal into the at least two first current signals; specifically, each of the first transconductance stages 112 is connected to the output end of the first amplifier 111 and can convert the first voltage signal V1 into a first current signal; for example, the first transconductance stage GM 1-1 can convert the first voltage signal V1 into a first current signal I 1-1 . All the first transconductance stages GM 1-1 , GM 1-2 , ……, GM 1-nThe output thereof is the output of the first processing module 11, where n is an integer greater than or equal to 2. The first transconductance stage may be implemented using a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), or may be implemented in other ways, which is not limited herein.

[0056] Please refer to Figure 3 , in an embodiment of the present application, the first amplifier 111 includes a third transconductance stage 1111 and a first MOSFET 1112. Wherein, the third transconductance stage 1111 is configured to convert the input voltage signal V at the input end IN into a third current signal I3. The gate and drain of the first MOSFET 1112 are connected to form a diode, and the gate of the first MOSFET 1112 is connected to each of the first transconductance stages to form at least two corresponding current mirrors. The first MOSFET 1112 forms the first voltage signal V1 at its gate based on the third current signal I3. The third current signal I3 forms the at least two first current signals through each of the current mirrors. For example, the first MOSFET 1112 and the first transconductance stage GM 1-1 constitute a current mirror, and the third current I3 forms a first current signal I through this current mirror 1-1 ; the first MOSFET 1112 and the first transconductance stage GM 1-2 constitute another current mirror, and the third current I3 forms another first current signal I through this other current mirror 1-2 .

[0057] According to the above description, it can be seen that in this embodiment, the first MOSFET is connected to each of the first transconductance stages and forms at least two corresponding current mirrors. The third current signal I3 output by the third transconductance stage is converted into the voltage V1 on the diode-connected MOSFET inside the current mirror, and then is converted into at least two first current signals and output via the first transconductance stages inside each of the current mirrors. Although the output of the first amplifier 111 in this embodiment is a voltage signal, the presence of the current mirror can ensure that the linearity of the signal will not decrease, and thus can ensure that the first transconductance stage in this embodiment has good linearity.

[0058] It should be noted that in this embodiment, the first amplifier circuit is introduced by taking a single-ended signal as an example. In actual applications, the structure of the first amplifier circuit can also be adjusted according to requirements to enable it to have the ability to process differential signals. The specific method is not elaborated herein.

[0059] Please refer to Figure 4, in an embodiment of the present application, the second processing module 12 includes a matching amplifier circuit 121 and at least two second transconductance stages 122. Among them, the matching amplifier circuit 121 is used to achieve impedance matching at the input end of the low-noise amplifier circuit, and amplify the input voltage signal at the input end to obtain a second voltage signal V2; the matching amplifier circuit 121 is further used to convert the second voltage signal V2 into a feedback signal FB and feedback it to the input end. The input ends of the at least two second transconductance stages 122 are connected to the output end of the matching amplifier circuit 121. The second transconductance stage is used to convert the second voltage signal V2 into the at least two-way second current signals. Specifically, each of the second transconductance stages 122 converts the second voltage signal V2 into a second current signal, for example: the second transconductance stage GM 2-1 is capable of converting the second voltage signal V2 into a second current signal I 2-1 . All the second transconductance stages GM 2-1 , GM 2-2 , ……, GM 2-n 's outputs are the outputs of the second processing module 12, where n is an integer greater than or equal to 2. In specific applications, each of the second transconductance stages can be implemented by a MOSFET or other means, which is not limited here.

[0060] In this embodiment, the matching amplifier circuit can amplify the input voltage signal at the input end. Therefore, the matching amplifier circuit will suppress the noise of the second transconductance stage, so the noise of the second transconductance stage will not become the main noise in the low-noise amplifier circuit, thus allowing the second transconductance stage to be designed with a higher linearity.

[0061] Please refer to Figure 5 , in an embodiment of the present application, the matching amplifier circuit 121 includes a second amplifier (A2) 1211 and a feedback circuit 1212. Among them, the second amplifier 1211 is used to amplify the input voltage signal V IN at the input end to obtain the second voltage signal V2; the feedback circuit 1212 is connected to the second amplifier 1211 and the input end, and is used to convert the second voltage signal into the feedback signal FB and feedback it to the input end.

[0062] In practical applications, the matching amplifier circuit 121 may generate noise. At this time, the second voltage signal V2 includes all or part of the noise voltage generated by the matching amplifier circuit 121. On the one hand, the noise voltage reaches the input end through the feedback circuit and forms a first noise current after passing through the first transconductance stage of the first processing module. On the other hand, the noise voltage forms a second noise current after passing through the second transconductance stage of the second processing module. In particular, when the low-noise amplifier circuit 1 adopts Figure 6 the circuit shown, the phases of the first noise current and the second noise current are opposite. It should be noted that Figure 6 is only an example of the low-noise amplifier circuit. When the low-noise amplifier circuit is implemented in other ways, the phases of the first noise current and / or the second noise current can be adjusted by using components such as inverting amplifiers in the circuit to ensure that the phases of the first noise current and the second noise current are opposite.

[0063] Please continue to refer to Figure 6 , in an embodiment of the present application, the voltage output module 13 includes at least two current combining units 131 and at least two current-voltage conversion units 132, where the number of the current-voltage conversion units 132 is the same as the number of the current combining units 131 and they are connected in one-to-one correspondence.

[0064] The at least two current combining units 131 are respectively connected to the first processing module 11 and the second processing module 12, so that each current combining unit corresponds to each first current signal output by the first processing module 11 one-to-one, and each current combining unit corresponds to each second current signal output by the second processing module 12 one-to-one. Each current combining unit is configured to combine its corresponding first current signal with its corresponding second current signal to obtain a fourth current signal. For example, for the current combining unit Adder1, its corresponding first current signal is I 1-1 , and its corresponding second current signal is I 2-1 . The current combining unit Adder1 can combine the first current signal I 1-1 and the second current signal I 2-1 to obtain the corresponding fourth current signal I 4-1 .

[0065] In particular, when the first noise current and the second noise current exist in the low-noise amplifier circuit, the current combining unit is further configured to combine the first noise current and the second noise current. Since the phases of the first noise current and the second noise current are opposite, after combining the two, partial cancellation or complete cancellation of the first noise current and the second noise current can be achieved, thereby reducing or even eliminating the noise current in the low-noise amplifier circuit.

[0066] Each of the current-voltage conversion units is respectively connected to a corresponding current combining unit; the fourth current signal forms the output voltage signal after flowing through the current-voltage conversion unit. Specifically, each of the current-voltage conversion units is configured to convert one path of the fourth current signal and obtain one path of output voltage signal; the output voltage signals of all the current-voltage conversion units are the output voltage signal of the low-noise amplifier circuit.

[0067] According to the above description, it can be known that the low-noise amplifier circuit in this embodiment can achieve the combination of the first noise current and the second noise current through the current combining unit, so as to achieve partial or complete cancellation of the first noise current and the second noise current, which is beneficial to reducing the noise generated by the second amplifier A2. At this time, the second amplifier A2 has sufficient design freedom, so as to ensure that the second amplifier can be designed to have better performance indicators, such as higher linearity or lower power consumption.

[0068] In an embodiment of the present application, the first current signal and the second current signal are differential current signals or single-ended current signals. When they are single-ended current signals, the implementation manner of the low-noise amplifier circuit is as Figure 6 shown.

[0069] When the first current signal and the second current signal are differential current signals, the implementation manner of the low-noise amplifier circuit is as Figure 7A shown, where the first amplifier A1 and the second amplifier A2 are both implemented using a single-ended differential configuration. Correspondingly, the first transconductance stage, the second transconductance stage, the feedback circuit, the current combining unit, and the current-voltage conversion unit used in the circuit also adopt a differential configuration to process the differential signals in the circuit. In this low-noise amplifier circuit, the noise from the second amplifier A2 is eliminated in the differential mode. The circuit structure is implemented in a differential form, which can ensure that the low-noise amplifier circuit has good power supply rejection, common-mode rejection, and second-order linearity.

[0070] Specifically, when the first current signal and the second current signal are differential current signals, an implementation manner of the first processing module is as Figure 7BAs shown. Among them, the third transconductance stage GM3 has a single-ended input and a differential output. Its output current is converted into a voltage on a diode-connected MOSFET and then converted back into a current through a current mirror. Due to the characteristics of the current mirror, although the output of the first amplifier A1 is a voltage signal, the linearity of the signal in the first processing module will not be reduced. An implementation of the second processing module is as Figure 7C shown, in which the feedback circuit adopted is implemented in a differential input and single-ended output manner.

[0071] According to the above description, it can be known that the low-noise amplifier circuit described in this embodiment can achieve single-ended input and differential output. In some embodiments, the radio frequency front end usually uses a balun to receive differential signals; while in the low-noise amplifier circuit described in this embodiment, the first amplifier and the second amplifier are allowed to adopt a single-ended differential configuration, so as to achieve the reception of differential signals. At this time, the low-noise amplifier circuit does not need to use a balun, which is beneficial to reducing costs.

[0072] Based on the above description of the low-noise amplifier circuit, the present application also provides a chip. Please refer to Figure 8 , in an embodiment of the present application, the chip includes at least some of the devices in the low-noise amplifier circuit described in the present application. For example, the chip may include the entire low-noise amplifier circuit, or may only include the first processing module and / or the second processing module in the low-noise amplifier circuit. The chip can be represented as a salable active device encapsulated by a voltage discharge circuit manufactured on a wafer using semiconductor technology; or represented as a salable active device encapsulated by the low-noise amplifier circuit using PCB packaging technology.

[0073] Based on the above description of the low-noise amplifier circuit, the present application also provides an electronic device, and the electronic device includes the low-noise amplifier circuit described in the present application. The electronic device includes, but is not limited to, a set-top box.

[0074] The voltage V at the input end in the low-noise amplifier circuit described in the present application INIt can be effectively amplified by the first processing module and the second processing module and added at each current combining unit. The first processing module may include a current mirror composed of a first MOSFET and a third transconductance stage. The presence of the current mirror enables the first processing module to be designed with high linearity. In the second processing module, the second amplifier A2 suppresses the noise in the second transconductance stage, so the noise in the second transconductance stage will not become the main noise in the circuit. Therefore, the second transconductance stage can be designed with high linearity. The noise of the second amplifier A2 is the main noise source introduced due to impedance matching requirements. This noise is transmitted to each current combining unit through the first processing module and the second processing module. Since the first noise current from the first processing module and the second noise current from the second processing module are in opposite phases, the weakening or even elimination of the noise current can be achieved at the current combining unit, which provides a high enough design freedom for the design of the second amplifier A2. Therefore, the second amplifier A2 can be designed with high linearity. The low-noise amplifier circuit described in this application is particularly suitable for broadband scenarios and is a multi-output broadband low-noise amplifier with noise cancellation.

[0075] In addition, the low-noise amplifier circuit described in this application can be configured to enable single-ended input and differential output, thus reducing the use of baluns and facilitating cost reduction.

[0076] In summary, this application effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0077] The above embodiments are only illustrative of the principles and effects of this application and are not used to limit this application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in this application should still be covered by the claims of this application.

Claims

1. A low-noise amplifier circuit, characterized in that, It has a single input terminal and at least two output terminals, and is used to amplify the input voltage signal at the input terminal and convert it into at least two output voltage signals, and each output voltage signal is output through the corresponding output terminal; The low-noise amplifier circuit includes: A first processing module, which is used to amplify the input voltage signal at the input terminal and convert it into at least two first current signals; A second processing module, which is used to achieve impedance matching at the input terminal of the low-noise amplifier circuit, and is used to amplify the input voltage signal at the input terminal and then convert it into at least two second current signals, where the number of the second current signals is the same as the number of the first current signals; A voltage output module, the voltage output module is connected to the first processing module and the second processing module, and is used to convert the first current signal and the second current signal into the output voltage signal after corresponding merging; where the number of the output voltage signals is the same as the number of the first current signals.

2. The low-noise amplifier circuit according to claim 1, characterized in that, The first processing module includes: A first amplifier, which is used to amplify the input voltage signal at the input terminal to obtain a first voltage signal; At least two first transconductance stages, the at least two first transconductance stages are connected to the first amplifier; the at least two first transconductance stages are used to convert the first voltage signal into the at least two first current signals.

3. The low-noise amplifier circuit according to claim 2, characterized in that, The first amplifier includes: A third transconductance stage, which is used to convert the input voltage signal at the input terminal into a third current signal; A first MOSFET, the gate and drain of the first MOSFET are connected, and its gate is connected to each of the first transconductance stages to form at least two current mirrors, and its drain is connected to the third transconductance stage; the first MOSFET forms the first voltage signal at its gate based on the third current signal.

4. The low-noise amplifier circuit according to claim 1, characterized in that, The second processing module includes: A matching and amplifying circuit, which is used to achieve impedance matching at the input terminal of the low-noise amplifier circuit, amplify the input voltage signal at the input terminal to obtain a second voltage signal, and convert the second voltage signal into a feedback signal and feedback it to the input terminal; At least two second transconductance stages, which are connected to the matching and amplifying circuit; the second transconductance stages are used to convert the second voltage signal into the at least two second current signals.

5. The low-noise amplifier circuit according to claim 4, characterized in that, The matching and amplifying circuit includes: A second amplifier, which is used to amplify the input voltage signal at the input terminal to obtain the second voltage signal; A feedback circuit, the feedback circuit is connected to the second amplifier and the input terminal, and is used to convert the second voltage signal into the feedback signal and feedback it to the input terminal.

6. The low-noise amplifier circuit according to claim 1, characterized in that, The voltage output module includes: At least two current merging units, which are respectively connected to the first processing module and the second processing module; the current merging units are used to correspondingly merge the first current signal and the second current signal to obtain a fourth current signal; where the number of the fourth current signals is the same as the number of the first current signals; At least two current-voltage conversion units, respectively connected to corresponding current combining units; the at least two current-voltage conversion units are configured to convert the fourth current signal into the output voltage signal.

7. The low-noise amplifier circuit according to claim 1, characterized in that: The first current signal and the second current signal are differential current signals; or The first current signal and the second current signal are single-ended current signals.

8. A chip, characterized in that: The chip includes the low-noise amplifier circuit according to any one of claims 1-7.

9. An electronic device, characterized in that: The electronic device includes the low-noise amplifier circuit according to any one of claims 1-7.

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