Multi-band amplification circuit and chip

Abstract

The utility model relates to a multi-band amplification circuit and a chip. The circuit comprises at least two first amplification units, a first switch and a second switch, the frequency bands supported by the first amplification unit are the same; the first switch comprises at least two first ends and at least two second ends, and any first end of the first switch can be conducted with any second end; the second switch comprises a first end and at least two second ends, and the first end of the second switch can be conducted with any second end; the signal input ends of the two first amplification units are in one-to-one connection with the first ends of the first switches, and the second ends of the first switches are in one-to-one connection with the first ends of the second switches. According to the multi-band amplification circuit provided by the invention, through the first switch and the second switch which are cascaded, the input signal received by any signal receiving end can select any amplifier for signal amplification, so that the signal path design is more flexible, and the support capability of MIMO is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a multi-band amplifier circuit and chip. Background Art

[0002] Multi-antenna technology enables mobile terminals to achieve faster downlink speeds. ENDC (E-UTRAN and NR – Dual Connectivity, 4G and 5G dual connectivity) and CA (Carrier Aggregation) technologies enable mobile terminals to operate simultaneously in multiple frequency bands. MIMO (Multiple-Input Multiple-Output) technology allows mobile terminals to operate in frequency bands with more RF receive paths, further improving downlink speeds. However, current integrated amplifier chips have numerous port limitations, hindering the effective implementation of these three technologies. Utility Model Content

[0003] In order to solve the above technical problems, the present disclosure provides a multi-band amplifier circuit and chip.

[0004] The present disclosure provides a multi-band amplification circuit, comprising at least two first amplification units, at least one first switch, and at least two second switches; the at least two first amplification units support the same frequency band; the first switch comprises at least two first ends and at least two second ends, and any first end of the first switch can be conductive with any second end; the second switch comprises a first end and at least two second ends, and the first end of the second switch can be conductive with any second end, and the second end of the second switch is used to receive a first input signal; the signal input ends of the at least two first amplification units are connected one-to-one with the at least two first ends of the first switches, and the at least two second ends of the first switch are connected one-to-one with the first end of the second switch; the signal output end of the first amplification unit is used to send a first output signal, and the first output signal is the first input signal after amplification.

[0005] Optionally, the multi-band amplifying circuit includes N first amplifying units, one first switch, and N second switches, the first switch includes N first ends and N second ends, and N is an integer greater than 1.

[0006] Optionally, the first amplifying unit supports a frequency band of 1000 MHz to 3000 MHz.

[0007] Optionally, the multi-band amplification circuit further includes at least one third switch; the third switch includes at least two first ends and at least two second ends, and any first end of the third switch can be connected to any second end; the signal output ends of the at least two first amplification units are connected one-to-one to the at least two second ends of the third switch; and the at least two first ends of the third switch are used to send the first output signal.

[0008] Optionally, the multi-band amplification circuit further includes at least one second amplification unit; the frequency band supported by the second amplification unit does not exceed the frequency band supported by the first amplification unit; the signal input end of the second amplification unit is used to receive a second input signal; the signal output end of the second amplification unit is one-to-one connected to at least one second end of the third switch; at least one first end of the third switch is used to send a second output signal, and the second output signal is the second input signal after amplification.

[0009] Optionally, the multi-band amplifying circuit includes N first amplifying units and one third switch, the third switch includes M first ends and M second ends, M and N are both integers greater than 1, and M≥N.

[0010] Optionally, the frequency band supported by the second amplifying unit is 1000 MHz to 2000 MHz, or the frequency band supported by the second amplifying unit is 1500 MHz to 3000 MHz.

[0011] Optionally, the multi-band amplification circuit further includes at least one third amplification unit; the frequency band supported by the third amplification unit at least partially exceeds the frequency band supported by the first amplification unit; the signal input end of the third amplification unit is used to receive a third input signal, and the signal output end of the third amplification unit is used to send a third output signal, and the third output signal is the third input signal after amplification processing.

[0012] Optionally, the frequency band supported by the third amplifying unit is less than 1000 MHz.

[0013] Based on the same utility model concept, the present disclosure also provides a multi-band amplifier chip, including any one of the multi-band amplifier circuits described above, multiple first RF input ports and at least two first RF output ports; the first RF input port is used to receive the first input signal, and the first RF output port is used to send the first output signal.

[0014] The technical solution provided by the present disclosure has the following advantages over the existing technology: the multi-band amplification circuit provided by the present disclosure, through the cascaded first switch and the second switch, enables the input signal received by any signal receiving end to select any amplifier for signal amplification, making the signal path design more flexible, while increasing the number of frequency band combinations and receiving paths, thereby enabling the mobile terminal to support more CA and ENDC combinations, improving the support capability of MIMO, and obtaining a faster downlink rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of an amplifier circuit in related technology;

[0018] Figure 2 A schematic structural diagram of a multi-band amplifier circuit provided in an embodiment of the present disclosure;

[0019] Figure 3 A schematic structural diagram of another multi-band amplifier circuit provided by an embodiment of the present disclosure;

[0020] Figure 4 A schematic structural diagram of another multi-band amplifier circuit provided by an embodiment of the present disclosure;

[0021] Figure 5 A schematic structural diagram of another multi-band amplifier circuit provided by an embodiment of the present disclosure;

[0022] Figure 6 A schematic structural diagram of a multi-band amplifier chip provided in an embodiment of the present disclosure;

[0023] Figure 7 A schematic structural diagram of another multi-band amplifier chip provided in an embodiment of the present disclosure;

[0024] Figure 8 A schematic structural diagram of another multi-band amplifier chip provided in an embodiment of the present disclosure;

[0025] Figure 9 A schematic structural diagram of another multi-band amplifier chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present disclosure, the scheme of the embodiments of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present disclosure, but the embodiments of the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, not all of the embodiments.

[0028] Figure 1 The figure shows an amplifier circuit diagram composed of multiple amplifier units LNA in the related art, including the amplifier unit LNA, multiple single-pole multi-throw switches SPNT, and a multi-pole multi-throw switch NPNT. The input signal in first passes through the single-pole multi-throw switch SPNT to reach the amplifier unit LNA, and after being amplified by the amplifier unit LNA, it is output as the output signal out through the multi-pole multi-throw switch NPNT.

[0029] from Figure 1 As can be seen, each input signal in can only be amplified by a fixed amplifier unit LNA. Furthermore, each amplifier unit LNA can only amplify the input signal in received by the corresponding single-pole, multi-throw switch SPNT. Furthermore, each amplifier unit LNA operates in a fixed frequency band. This results in the amplifier circuit being able to handle a limited number of frequency band combinations, making it unsuitable for multi-antenna technology.

[0030] In other existing technologies, to achieve more frequency band combinations, multiple switches are added to the periphery of the chip containing the amplifier circuit to ensure that the RF path switches between different amplifiers. However, this increases the complexity of the peripheral circuits and circuit routing.

[0031] In view of this, the embodiment of the present disclosure provides a multi-band amplifier circuit, such as Figure 2 As shown, it includes at least two first amplifying units LNA1, at least one first switch S1 and at least two second switches S2.

[0032] At least two first amplifying units LNA1 support the same frequency band, so a signal in one frequency band can be amplified by any first amplifying unit LNA1.

[0033] Specifically, the two amplification units supporting the same frequency band means that the two amplification units can effectively amplify the same frequency range of RF signals. Specifically, the first amplification unit LNA1 can be a single amplifier or a signal amplification unit composed of multiple electronic components. Any component or unit capable of amplifying an input signal can serve as the first amplification unit LNA1 in the disclosed embodiments. The second amplification unit LNA2 and the third amplification unit LNA3 described below are similar and will not be further described. In specific implementations, the first amplification unit LNA1 is a low-noise amplification unit.

[0034] The first switch S1 includes at least two first terminals P and at least two second terminals T. Any first terminal P of the first switch S1 can be connected to any second terminal T, which is equivalent to the first switch S1 being a multi-pole multi-throw switch.

[0035] The second switch S2 includes a first terminal P and at least two second terminals T. The first terminal P of the second switch S2 can be connected to any second terminal T, which is equivalent to the second switch S2 being a single-pole multi-throw switch.

[0036] The second end T of the second switch S2 is used to receive the first input signal in1 . Each second end T of the second switch S2 can serve as a receiving port of a radio frequency signal and receive the first input signal in1 .

[0037] The signal input terminals LAN_in of at least two first amplifier units LNA1 are connected one-to-one with at least two first terminals P of the first switch S1 (i.e., the signal input terminal LAN_in of each first amplifier unit LNA1 is connected to the first terminal P of a different first switch S1). At least two second terminals T of the first switch S1 are connected one-to-one with the first terminal P of the second switch S2 (i.e., the second terminal T of each first switch S1 is connected to the first terminal P of a different second switch S2). The signal output terminal LAN_out of the first amplifier unit LNA1 is used to transmit a first output signal out1, which is the amplified first input signal in1. Thus, after the first input signal in1 is input to any second terminal T of any second switch S2, it can be amplified and output by any selected first amplifier unit LNA1 through the cascaded first and second switches S1 and S2.

[0038] The multi-band amplification circuit provided in the embodiment of the present disclosure uses a cascaded first switch S1 and a second switch S2 to enable any signal receiving end to select any amplifier for signal amplification, making the signal path design more flexible. At the same time, it can increase the number of frequency band combinations and receiving paths, thereby enabling the mobile terminal to support more CA and ENDC combinations, improving the support capability of MIMO, and achieving a faster downlink rate.

[0039] It is understood that the first switch S1 and the second switch S2 described above can be a single switch device or a switch unit composed of multiple switch devices. Any device or unit capable of implementing the aforementioned switching logic can serve as the first switch S1 and the second switch S2 in the embodiments of the present disclosure, and those skilled in the art will be able to select the corresponding hardware based on the description of the aforementioned embodiments. The third switch S3 described below is similarly described and will not be further described.

[0040] In some embodiments, as Figure 2 As shown, the multi-band amplifier circuit includes N first amplifier units LNA1, a first switch S1 and N second switches S2. The first switch S1 includes N first terminals P and N second terminals T. The first switch S1 is an N-pole N-throw switch, where N is an integer greater than 1.

[0041] exist Figure 2 In the embodiment shown, N=2. In other embodiments, N may have other values, such as Figure 3 As shown, the multi-band amplifier circuit includes three first amplifier units LNA1, a first switch S1 and three second switches S2. The first switch S1 includes three first terminals P and three second terminals T. The first switch S1 is a 3-pole 33-throw switch. Those skilled in the art can Figure 2 and Figure 3 More embodiments can be implemented based on the embodiments, which will not be described in detail here.

[0042] Figure 2 and Figure 3 The first switches S1 shown are all N-pole, N-throw switches due to their lower procurement cost. In other embodiments, the multi-band amplifier circuit includes N first amplifier units LNA1, a first switch S1, and K second switches S2. The first switch S1 includes N first terminals P and K second terminals T. The first switch S1 is an N-pole, K-throw switch, where N and K are both integers greater than 1, and K is not equal to N. The same applies to other N-pole, N-throw switches in the disclosed embodiments and will not be described in detail.

[0043] In some embodiments, the frequency band supported by the first amplifying unit LNA1 is the MHB (Middle High Band) frequency band, and the frequency range of the MHB band is 1000 MHz to 3000 MHz.

[0044] The first amplification unit LNA1 supports a wider frequency band, thereby being able to accommodate more signal paths and increase the number of frequency band combinations, thereby enabling the mobile terminal to support more CA and ENDC combinations, improving MIMO support capabilities, and obtaining a faster downlink rate.

[0045] Specifically, the frequency bands supported by the first amplification unit LNA1 include, but are not limited to, bands B7, B38, B40, B41, B1, B3, B4, and B66. Other frequency bands within the 1000 MHz to 3000 MHz range may also be used as frequency bands supported by the first amplification unit LNA1. The MHB frequency bands mentioned in the following embodiments are all referenced here and will not be further described.

[0046] In some embodiments, as Figure 4 As shown, the multi-band amplifying circuit further includes at least one third switch S3.

[0047] The third switch S3 includes at least two first terminals P and at least two second terminals T. Any first terminal P of the third switch S3 can be conductively connected to any second terminal T. The third switch S3 is a multi-pole multi-throw switch.

[0048] The signal output terminals LAN_out of at least two first amplifying units LNA1 are connected one-to-one to at least two second terminals T of the third switch S3 (i.e., the signal output terminal LAN_out of each first amplifying unit LNA1 is connected to the second terminal T of a different third switch S3). The at least two first terminals P of the third switch S3 are used to transmit the first output signal out1. Each first terminal P of the third switch S3 can function as a transmission port for a radio frequency signal and transmit the first output signal out1.

[0049] Therefore, after the first input signal in1 is input to any second end T of any second switch S2, it can be amplified by any first amplifier unit LNA1 selected through the cascaded first switch S1 and second switch S2, and then transmitted through any RF signal transmission port selected by the third switch S3, thereby improving the MIMO support capability of the mobile terminal.

[0050] In some embodiments, as Figure 4 As shown, the multi-band amplifier circuit includes N first amplifier units LNA1 and a third switch S3. The third switch S3 includes M first terminals P and M second terminals T. M and N are both integers greater than 1, and M=N.

[0051] exist Figure 4 In the embodiment shown, M=N=2. In other embodiments, N and M may have other values. For example, the multi-band amplifier circuit may include three first amplifier units LNA1 and a third switch S3. The third switch S3 includes three first terminals P and three second terminals T. The third switch S3 is a 3-pole 3-throw switch. Those skilled in the art can Figure 4 More embodiments can be implemented based on the embodiments, which will not be described in detail here.

[0052] In other embodiments, Figure 5As shown, the multi-band amplifier circuit further includes at least one second amplifier unit LNA2. The frequency band supported by the second amplifier unit LNA2 does not exceed the frequency band supported by the first amplifier unit LNA1. Furthermore, the second amplifier unit LNA2 can utilize the same multiple transmit ports that can transmit the same RF signal as the first amplifier unit LNA1. In a specific implementation, the second amplifier unit LNA2 is a low-noise amplifier unit.

[0053] Specifically, the second amplification unit LNA2 may support the same frequency band as the first amplification unit LNA1, or the frequency band supported by the second amplification unit LNA2 may be within the frequency band supported by the first amplification unit LNA1. For example, if the first amplification unit LNA1 supports the MHB frequency band, the second amplification unit LNA2 supports the MB (Middle Band) frequency band or the HB (High Band) frequency band.

[0054] The signal input terminal LAN_in of the second amplifying unit LNA2 is used to receive the second input signal in2. Figure 5 In the illustrated embodiment, the signal input terminal LAN_in of the second amplifying unit LNA2 is directly used to receive the second input signal in2. In other embodiments, the signal input terminal LAN_in of the second amplifying unit LNA2 may also receive the second input signal in2 through the switch unit.

[0055] The signal output terminal LAN_out of the second amplifier unit LNA2 is connected one-to-one with at least one second terminal T of the third switch S3 (i.e., the signal output terminal LAN_out of each second amplifier unit LNA2 is connected to the second terminal T of a different third switch S3, and each second terminal T of the third switch S3 is connected to only the signal output terminal LAN_out of one second amplifier unit LNA2 or the signal output terminal LAN_out of the first amplifier unit LNA1). At least one first terminal P of the third switch S3 is used to transmit the second output signal out2, which is the amplified second input signal in2.

[0056] Therefore, after the second input signal in2 is input to the second amplifying unit LNA2, it can be transmitted through any radio frequency signal transmission port selected by the third switch S3, thereby improving the MIMO support capability of the mobile terminal.

[0057] In other embodiments, Figure 5 As shown, it includes N first amplifying units LNA1 and a third switch S3 . The third switch S3 includes M first terminals P and M second terminals T. M and N are both integers greater than 1, and M>N.

[0058] exist Figure 5In the embodiment shown, N=2, M=3. In other embodiments, N and M may have other values, and those skilled in the art can Figure 5 More embodiments can be implemented based on the embodiments, which will not be described in detail here.

[0059] In some embodiments, the frequency band supported by the second amplifying unit LNA2 is the MB frequency band, which has a frequency range of 1000 MHz to 2000 MHz; or the frequency band supported by the second amplifying unit LNA2 is the HB frequency band, which has a frequency range of 1500 MHz to 3000 MHz.

[0060] Specifically, when the frequency band supported by the second amplification unit LNA2 is the MB band, the specific frequency bands supported include, but are not limited to, bands B1, B2, B3, B4, B39, and B66. Other frequency bands within the 1000 MHz to 2000 MHz range may also be used as frequency bands supported by the second amplification unit LNA2. The MB bands mentioned in the following embodiments are all referenced here and will not be detailed again.

[0061] When the second amplifier unit LNA2 supports the HB band, specific supported frequency bands include, but are not limited to, B3, B7, B38, B40, and B41. Other frequency bands within the 1500 MHz to 3000 MHz range may also be supported by the second amplifier unit LNA2. The HB bands mentioned in the following embodiments are all referenced here and will not be further described.

[0062] In some embodiments, the multi-band amplifier circuit further includes at least one third amplifier unit LNA3. The frequency band supported by the third amplifier unit LNA3 at least partially exceeds the frequency band supported by the first amplifier unit LNA1. Specifically, the maximum value of the frequency band supported by the third amplifier unit LNA3 is lower than the minimum value of the frequency band supported by the first amplifier unit LNA1. In a specific implementation, the third amplifier unit LNA3 is a low-noise amplifier unit.

[0063] The signal input terminal LAN_in of the third amplifier unit LNA3 is used to receive the third input signal in3, and the signal output terminal LAN_out of the third amplifier unit LNA3 is used to transmit the third output signal out3. The third output signal out3 is the amplified third input signal in3. In other words, the third amplifier unit LNA3 is a separate amplifier unit, which prevents the third input signal in3 and the third output signal out3 from generating crosstalk with signals passing through other amplifier units.

[0064] In some embodiments, the frequency band supported by the third amplifying unit LNA3 is the LB (Low Band) frequency band, and the frequency range of the LB band is less than 1000 MHz.

[0065] Specifically, the frequency bands supported by the third amplifier unit LNA3 include, but are not limited to, bands B5, B8, B12, B13, B17, B19, B20, and B28. Other frequency bands below 1000 MHz may also be used as frequency bands supported by the third amplifier unit LNA3. The LB frequency bands mentioned in the following embodiments can all be referred to here and will not be described in detail here.

[0066] Based on the same utility model concept, an embodiment of the present disclosure further provides a multi-band amplifier chip 10, such as Figure 6 As shown, the multi-band amplifier circuit 20 includes any of the above embodiments, multiple first RF input ports RF_IN1, and at least two first RF output ports RF_OUT1. The first RF input ports RF_IN1 are used to receive a first input signal in1, and the first RF output ports RF_OUT1 are used to transmit a first output signal out1. The frequency band of the signal received by the first RF input port RF_IN1 is within the range of the frequency band supported by the first amplifier unit LNA1.

[0067] The multi-band amplification circuit provided in the embodiment of the present disclosure uses a cascaded first switch S1 and a second switch S2 to enable any signal receiving end to select any amplifier for signal amplification, making the signal path design more flexible. At the same time, it can increase the number of frequency band combinations and receiving paths, thereby enabling the mobile terminal to support more CA and ENDC combinations, improving the support capability of MIMO, and achieving a faster downlink rate.

[0068] At the same time, the embodiment of the present disclosure integrates the cascaded first switch S1 and the second switch S2 into a chip, avoiding the need to add peripheral circuits to the mobile terminal, reducing circuit routing complexity, and saving the production cost of the mobile terminal.

[0069] Specifically, the chip provided by the above embodiments of the present disclosure can be applied to mobile terminals designed using Phase2N, Phase5, and Phase5N solutions.

[0070] In a specific embodiment, Figure 7 As shown, the multi-band amplifier chip 10 includes four first amplifier units LNA1, one third amplifier unit LNA3, five second switches S2, one first switch S1, one third switch S3, 15 first RF input ports RF_IN1, four first RF output ports RF_OUT1, four third RF input ports RF_IN3, and one third RF output port RF_OUT3. The third RF input port RF_IN3 receives a signal whose frequency band is within the range supported by the third amplifier unit LNA3.

[0071] Among them, the second ends T of the four second switches S2 are connected one-to-one with the 15 first RF output ports RF_OUT1, the second end T of one second switch S2 is connected with the four third RF output ports RF_OUT3, and one third RF output port RF_OUT3 is connected to the signal output end LAN_out of the third amplification unit LNA3.

[0072] exist Figure 7 In the illustrated embodiment, the frequency band supported by the first amplifying unit LNA1 is the MHB frequency band, and the frequency band supported by the third amplifying unit LNA3 is the LB frequency band. Figure 7 The chip shown in the embodiment includes a total of 15 MHB RF input ports, 4 LB RF input ports, 4 single-pole four-throw second switches S2, 1 single-pole three-throw second switch S2, 1 four-pole four-throw first switch S1, 1 four-pole four-throw third switch S3, 4 MHB RF output ports, and 1 LB RF output port. In this way, all frequency bands supporting MHB in the mobile terminal can be connected to any one of the 15 MHB RF input ports. Then, through software configuration, any one of the four first amplifier units LNA1 can be selected for amplification, and then any one of the four MHB RF output ports can be selected for transmission. The mobile terminal can freely and unrestrictedly apply MIMO technology and flexibly implement the configuration of ENDC and CA combinations, increasing the number of frequency band combinations and receiving channels.

[0073] In other embodiments, Figure 8 As shown, the first switch S1 can be simplified from a four-pole, four-throw switch to a three-pole, three-throw switch. The multi-band amplifier chip 10 further includes 12 first RF input ports RF_IN1, three second RF input ports RF_IN2, four first RF output ports RF_OUT1, four third RF input ports RF_IN3, and one third RF output port RF_OUT3. The signal frequency band received by the second RF input port RF_IN2 is within the range of the frequency band supported by the second amplifier unit LNA2.

[0074] exist Figure 8 In the illustrated embodiment, the frequency band supported by the first amplifying unit LNA1 may be the MHB band, the frequency band supported by the second amplifying unit LNA2 may be the MHB band, the MB band, or the HB band, and the frequency band supported by the third amplifying unit LNA3 may be the LB band.

[0075] Figure 8 Other elements in the embodiment shown can be referred to Figures 1 to 7 The description of the illustrated embodiment will not be repeated here.

[0076] In other embodiments, Figure 9As shown, the first switch S1 can be simplified from a quad-pole quad-throw switch to a double-pole double-throw switch. The multi-band amplifier chip 10 further includes eight first RF input ports RF_IN1, seven second RF input ports RF_IN2, four first RF output ports RF_OUT1, four third RF input ports RF_IN3, and one third RF output port RF_OUT3.

[0077] exist Figure 9 In the illustrated embodiment, the frequency band supported by the first amplifying unit LNA1 may be the MHB band, the frequency band supported by the second amplifying unit LNA2 may be the MHB band, the MB band, or the HB band, and the frequency band supported by the third amplifying unit LNA3 may be the LB band.

[0078] Figure 9 Other elements in the embodiment shown can be referred to Figures 1 to 8 The description of the illustrated embodiment will not be repeated here.

[0079] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the above elements.

[0080] The foregoing are merely specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not limited to the foregoing embodiments, but is intended to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A multi-band amplifier circuit, characterized in that: comprising at least two first amplifying units, at least one first switch and at least two second switches; The at least two first amplification units support the same frequency band; The first switch includes at least two first terminals and at least two second terminals, and any first terminal of the first switch can be conductively connected to any second terminal; The second switch includes a first end and at least two second ends, the first end of the second switch can be connected to any second end, and the second end of the second switch is used to receive a first input signal; The signal input terminals of the at least two first amplifying units are connected one-to-one with the at least two first terminals of the first switch, and the at least two second terminals of the first switch are connected one-to-one with the first terminal of the second switch; The signal output end of the first amplifying unit is used to send a first output signal, and the first output signal is the first input signal after amplification.

2. The circuit according to claim 1, wherein: The system includes N first amplifying units, one first switch, and N second switches. The first switch includes N first ends and N second ends, where N is an integer greater than 1.

3. The circuit according to claim 1, wherein: The frequency band supported by the first amplifying unit is 1000MHz to 3000MHz.

4. The circuit according to claim 1, wherein: Also comprising at least one third switch; The third switch includes at least two first terminals and at least two second terminals, and any first terminal of the third switch can be conductively connected to any second terminal; The signal output ends of the at least two first amplifying units are connected one-to-one with the at least two second ends of the third switch; At least two first ends of the third switch are used to send the first output signal.

5. The circuit according to claim 4, characterized in that Also comprising at least one second amplification unit; The frequency band supported by the second amplifying unit does not exceed the frequency band supported by the first amplifying unit; The signal input end of the second amplifying unit is used to receive a second input signal; The signal output end of the second amplifying unit is connected one-to-one with at least one second end of the third switch; At least one first end of the third switch is used to send a second output signal, and the second output signal is the second input signal after amplification.

6. The circuit according to claim 4 or 5, characterized in that It includes N first amplifying units and one third switch, and the third switch includes M first ends and M second ends, where M and N are both integers greater than 1, and M≥N.

7. The circuit according to claim 5, characterized in that The frequency band supported by the second amplifying unit is 1000 MHz to 2000 MHz, or the frequency band supported by the second amplifying unit is 1500 MHz to 3000 MHz.

8. The circuit according to claim 1, wherein: Also comprising at least one third amplification unit; The frequency band supported by the third amplifying unit at least partially exceeds the frequency band supported by the first amplifying unit; The signal input end of the third amplifying unit is used to receive a third input signal, and the signal output end of the third amplifying unit is used to send a third output signal. The third output signal is the third input signal after amplification.

9. The circuit according to claim 8, characterized in that The frequency band supported by the third amplifying unit is less than 1000 MHz.

10. A multi-band amplifier chip, characterized in that: comprising the multi-band amplifier circuit according to any one of claims 1 to 9, a plurality of first radio frequency input ports, and at least two first radio frequency output ports; The first RF input port is used to receive the first input signal, and the first RF output port is used to send the first output signal.

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