Multipath output radio frequency amplification device

Abstract

The invention discloses a multiplexed output radio frequency amplification device, at least one radio frequency input end in the multiplexed output radio frequency amplification device is correspondingly and electrically connected with an input end of a power divider, and two output ends of the power divider are correspondingly and electrically connected with two phase channels respectively. The two phase paths are correspondingly and electrically connected with two input ends of the combiner, and two output ends of the combiner are correspondingly and electrically connected with the two radio frequency output ends. The power divider is used for dividing radio frequency input signals of different radio frequency input ends into different radio frequency signal groups, and each radio frequency signal group comprises two radio frequency signals which are equal in amplitude and have a phase difference of 90 degrees. And the combiner is used for combining the two radio frequency signals of the radio frequency signal group into one radio frequency output signal and outputting the radio frequency output signal through the corresponding radio frequency output end. Therefore, by switching the radio frequency signals in different phase channels, channel selection of different radio frequency output ends is realized, link insertion loss is improved, and the power and efficiency of the multi-output radio frequency amplification device are improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of amplifiers, and in particular to a multi-channel output radio frequency amplifier device. Background Art

[0002] With the continuous development of communication technology, mobile communication terminals have higher and higher performance requirements for RF front-end modules. Among them, the RF power amplifier (RF power amplifier) ​​is an important component of the RF front-end module, and its main technical performance indicators such as bandwidth, gain, loss, linearity, transmission power and efficiency, as well as service life and area size are particularly important.

[0003] If the current RF amplifier wants to achieve multi-channel output, it usually uses a multi-channel amplifier chain to achieve multi-frequency amplification function. However, due to the use of multiple independent channel amplifier chains, the amplifier chip area is large and the cost is high. In addition, another method also uses a signal selection switch to achieve multi-channel output, but the setting of the signal selection switch will lead to poor link insertion loss. Summary of the invention

[0004] The present invention provides a multi-channel output radio frequency amplifier device, which realizes channel selection of different radio frequency output ends by switching radio frequency signals in different phase paths, improves link insertion loss, and enhances the power and efficiency of the multi-channel output radio frequency amplifier device.

[0005] In a first aspect, an embodiment of the present invention provides a multi-channel output radio frequency amplifier device, the multi-channel output radio frequency amplifier device comprising: at least one radio frequency input terminal, a power divider, two phase paths, a combiner and two radio frequency output terminals;

[0006] At least one of the radio frequency input terminals is electrically connected to an input terminal of the power divider, and the two output terminals of the power divider are electrically connected to the two phase paths respectively;

[0007] The two phase paths are electrically connected to the two input terminals of the combiner correspondingly, and the two output terminals of the combiner are electrically connected to the two RF output terminals correspondingly;

[0008] The power divider is used to divide the radio frequency input signals of different radio frequency input terminals into different radio frequency signal groups, wherein the radio frequency signal group includes two radio frequency signals with equal amplitudes and a phase difference of 90°;

[0009] The phase path is used to transmit the radio frequency signal;

[0010] The combiner is used to combine the two RF signals of the RF signal group into one RF output signal, and output it through the corresponding RF output terminal.

[0011] Optionally, the two radio frequency input terminals include a first radio frequency input terminal and a second radio frequency input terminal;

[0012] The two phase paths include a first phase path and a second phase path, and the two radio frequency output ends include a first radio frequency output end and a second radio frequency output end;

[0013] The first RF input end is electrically connected to the first input end of the power divider, the second RF input end is electrically connected to the second input end of the power divider, the first output end of the power divider is electrically connected to the first input end of the combiner through the first phase path, the second output end of the power divider is electrically connected to the second input end of the combiner through the second phase path, the first output end of the combiner is electrically connected to the first RF output end, and the second output end of the combiner is electrically connected to the second RF output end.

[0014] Optionally, when the first RF input end sends an RF input signal to the first input end of the power divider, the first RF signal divided by the power divider is transmitted through the first phase path, and the second RF signal divided by the power divider is transmitted through the second phase path. The combiner synthesizes a first RF output signal according to the first RF signal transmitted by the first phase path and the second RF signal transmitted by the second phase path, and outputs it through the first RF output end.

[0015] Optionally, when the second RF input end sends an RF input signal to the second input end of the power divider, the first RF signal divided by the power divider is transmitted through the second phase path, and the second RF signal divided by the power divider is transmitted through the first phase path. The combiner synthesizes the second RF output signal according to the second RF signal transmitted by the first phase path and the first RF signal transmitted by the second phase path, and outputs it through the second RF output end.

[0016] Optionally, the phase of the first radio frequency signal includes 0°, and the phase of the second radio frequency signal includes 90°.

[0017] Optionally, at least one of the radio frequency input terminals includes a third radio frequency input terminal;

[0018] The multi-channel output radio frequency amplification device comprises a switch unit;

[0019] The two phase paths include a first phase path and a second phase path, and the two radio frequency output ends include a first radio frequency output end and a second radio frequency output end;

[0020] The third RF input end is electrically connected to the first end of the switch unit, the second end of the switch unit is electrically connected to the first input end of the power divider, the third end of the switch unit is electrically connected to the second input end of the power divider, the first output end of the power divider is electrically connected to the first input end of the combiner through the first phase path, the second output end of the power divider is electrically connected to the second input end of the combiner through the second phase path, the first output end of the combiner is electrically connected to the first RF output end, and the second output end of the combiner is electrically connected to the second RF output end.

[0021] Optionally, when the first end and the second end of the switch unit are turned on, the third RF input end is turned on with the first input end of the power divider, the first RF signal divided by the power divider is transmitted through the first phase path, and the second RF signal divided by the power divider is transmitted through the second phase path, and the combiner synthesizes a first RF output signal according to the first RF signal transmitted by the first phase path and the second RF signal transmitted by the second phase path, and outputs it through the first RF output end.

[0022] Optionally, when the first and third ends of the switch unit are turned on, the third RF input end is turned on with the second input end of the power divider, the first RF signal divided by the power divider is transmitted through the second phase path, the second RF signal divided by the power divider is transmitted through the first phase path, and the combiner synthesizes the second RF output signal according to the second RF signal transmitted by the first phase path and the first RF signal transmitted by the second phase path, and outputs it through the second RF output end.

[0023] Optionally, the phase path includes a first phase path and a second phase path;

[0024] The first phase path includes a first driving amplifier circuit and a first output amplifier circuit, the input end of the first driving amplifier circuit is electrically connected to the first output end of the power divider, the output end of the first driving amplifier circuit is electrically connected to the input end of the first output amplifier circuit, and the output end of the first output amplifier circuit is electrically connected to the first input end of the combiner;

[0025] The second phase path includes a second drive amplifier circuit and a second output amplifier circuit, the input end of the second drive amplifier circuit is electrically connected to the second output end of the power divider, the output end of the second drive amplifier circuit is electrically connected to the input end of the second output amplifier circuit, and the output end of the second output amplifier circuit is electrically connected to the second input end of the combiner.

[0026] Optionally, the first driving amplifier circuit includes a first driving amplifier, a first resistor, a first capacitor, a second resistor, a first voltage source and a second capacitor;

[0027] The first output amplifying circuit includes a first output amplifier, a radio frequency power supply device, a third capacitor, a third resistor, a fourth capacitor, a second voltage source and a fifth capacitor;

[0028] The first electrode plate of the first capacitor is electrically connected to the first end of the first resistor and the first output end of the power divider, respectively; the second end of the first resistor is electrically connected to the input end of the first driving amplifier, the output end of the first driving amplifier is electrically connected to the first end of the second resistor, the second end of the second resistor is electrically connected to the positive end of the first voltage source and the first electrode plate of the second capacitor, respectively; the second electrode plate of the first capacitor, the negative end of the first voltage source and the second electrode plate of the second capacitor are all electrically connected to the ground end;

[0029] The third capacitor is connected in series between the output end of the first driving amplifier and the input end of the first output amplifier, the output end of the first driving amplifier is electrically connected to the first end of the RF power supply device and the first end of the third resistor respectively, the second end of the third resistor is electrically connected to the first plate of the fourth capacitor and the first input end of the combiner respectively, and the second plate of the fourth capacitor is electrically connected to the ground end;

[0030] The second end of the RF power supply device is electrically connected to the positive end of the second voltage source and the first plate of the fifth capacitor respectively, and the negative end of the second voltage source and the second plate of the fifth capacitor are electrically connected to the ground end.

[0031] In summary, the multi-channel output RF amplifier device of the embodiment of the present invention includes at least one RF input terminal, a power divider, two phase paths, a combiner and two RF output terminals. At least one RF input terminal is electrically connected to the input terminal of the power divider, and the two output terminals of the power divider are electrically connected to the two phase paths respectively. The two phase paths are electrically connected to the two input terminals of the combiner, and the two output terminals of the combiner are electrically connected to the two RF output terminals. The power divider is used to divide the RF input signals of different RF input terminals into different RF signal groups, and the RF signal group includes two RF signals with equal amplitudes and a phase difference of 90°. The phase path is used to transmit the RF signal, and the combiner is used to synthesize the two RF signals of the RF signal group into an RF output signal, and output it through the corresponding RF output terminal. In this way, by switching the RF signals in different phase paths, the channel selection of one input and multiple outputs or multiple inputs and multiple outputs is realized, which can reduce the chip area and production cost compared with multiple independent amplifier links. And since the embodiment of the present invention does not need to set a signal selection switch to achieve multi-channel output, it can improve the link insertion loss and improve the power and efficiency of the multi-channel output RF amplifier device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a multi-channel output radio frequency amplification device provided by an embodiment of the present invention;

[0033] Figure 2 It is a circuit diagram of the working process of a multi-channel output radio frequency amplifier device provided by an embodiment of the present invention;

[0034] Figure 3 It is a circuit diagram of the working process of another multi-channel output radio frequency amplifier device provided by an embodiment of the present invention;

[0035] Figure 4 This is a circuit diagram of the working process of another multi-channel output radio frequency amplifier device provided by an embodiment of the present invention; Figure 5 This is a circuit diagram of the working process of another multi-channel output radio frequency amplifier provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] Figure 1 is a schematic diagram of a multi-channel output radio frequency amplifier provided by an embodiment of the present invention, see Figure 1The multi-channel output RF amplifier device includes at least one RF input terminal 10, a power divider 20, two phase paths 30, a combiner 40 and two RF output terminals 50. At least one RF input terminal 10 is electrically connected to the input terminal of the power divider 20, and the two output terminals of the power divider 20 are electrically connected to the two phase paths 30 respectively. The two phase paths 30 are electrically connected to the two input terminals of the combiner 40, and the two output terminals of the combiner 40 are electrically connected to the two RF output terminals 50. The power divider 20 is used to divide the RF input signals of different RF input terminals 10 into different RF signal groups, and the RF signal group includes two RF signals with equal amplitudes and a phase difference of 90°. The phase path 30 is used to transmit the RF signal, and the combiner 40 is used to synthesize the two RF signals of the RF signal group into one RF output signal, and output it through the corresponding RF output terminal 50.

[0038] For details, see Figure 1 , the power divider 20 can be a 90° power divider, and the corresponding combiner 40 can be a 90° combiner. That is, the power divider 20 can divide the RF input signal input by the RF input terminal 10 into two RF signals with equal amplitude and 90° phase difference, and transmit them to the two input terminals of the combiner 40 through two output terminals and two corresponding electrically connected phase paths 30. The combiner combines the two RF signals into one RF output signal and outputs it through the RF output terminal 50. On the basis of the above embodiment, the embodiment of the present invention is provided with at least one RF input terminal 10 and two RF output terminals 50. According to the different connection modes between the RF input terminal 10 and the input terminal of the power divider 20, the power divider 20 can divide the RF input signal input by the RF input terminal 10 into different RF signal groups. Exemplarily, the power divider 20 includes two input terminals and two output terminals. When the RF input terminal 10 is electrically connected to the first input terminal of the power divider 20, the two output terminals of the power divider 20 output the first RF signal group, and transmit them respectively through the two corresponding electrically connected phase paths 30. When the RF input terminal 10 is electrically connected to the second input terminal of the power divider 20, the two output terminals of the power divider 20 output the second RF signal group and transmit them respectively through the two corresponding electrically connected phase paths 30. The transmission path of the two RF signals in the first RF signal group is different from the transmission path of the two RF signals in the second RF signal group.

[0039] The two input ends of the combiner 40 are electrically connected to the two phase paths 30, and then after receiving the RF signal group, the two RF signals of the RF signal group are synthesized into a RF output signal, and output through the corresponding RF output end 50. For example, after receiving the first RF signal group at the two input ends of the combiner 40, the first RF output signal is synthesized and output through one of the two RF output ends 50. After receiving the second RF signal group at the two input ends of the combiner 40, the second RF output signal is synthesized and output through the other of the two RF output ends 50. In this way, different RF signal groups are output by cooperating with the two input ends of the power divider 20 through at least one RF input end 10, and the RF signals in different phase paths 30 are switched, so that the channel selection of different RF output ends 50 is realized, that is, the channel selection of one input and multiple outputs or multiple inputs and multiple outputs is realized, which can reduce the chip area and production cost compared with multiple independent amplifier chains. In addition, since the embodiment of the present invention does not need to set a signal selection switch to realize multi-channel output, the link insertion loss can be improved, and the power and efficiency of the multi-channel output RF amplifier device can be improved.

[0040] In summary, the multi-channel output RF amplifier device of the embodiment of the present invention includes at least one RF input terminal, a power divider, two phase paths, a combiner and two RF output terminals. At least one RF input terminal is electrically connected to the input terminal of the power divider, and the two output terminals of the power divider are electrically connected to the two phase paths respectively. The two phase paths are electrically connected to the two input terminals of the combiner, and the two output terminals of the combiner are electrically connected to the two RF output terminals. The power divider is used to divide the RF input signals of different RF input terminals into different RF signal groups, and the RF signal group includes two RF signals with equal amplitudes and a phase difference of 90°. The phase path is used to transmit the RF signal, and the combiner is used to synthesize the two RF signals of the RF signal group into an RF output signal, and output it through the corresponding RF output terminal. In this way, by switching the RF signals in different phase paths, the channel selection of one input and multiple outputs or multiple inputs and multiple outputs is realized, which can reduce the chip area and production cost compared with multiple independent amplifier links. And since the embodiment of the present invention does not need to set a signal selection switch to achieve multi-channel output, it can improve the link insertion loss and improve the power and efficiency of the multi-channel output RF amplifier device.

[0041] Optionally, based on the above embodiment, Figure 2 This is a circuit diagram of the working process of a multi-channel output radio frequency amplifier provided by an embodiment of the present invention. Figure 2, the two RF input terminals 10 include a first RF input terminal 110 and a second RF input terminal 120. The two phase paths 30 include a first phase path 310 and a second phase path 320, and the two RF output terminals 50 include a first RF output terminal 510 and a second RF output terminal 520. The first RF input terminal 110 is electrically connected to the first input terminal of the power divider 20, the second RF input terminal 120 is electrically connected to the second input terminal of the power divider 20, the first output terminal of the power divider 20 is electrically connected to the first input terminal of the combiner 40 through the first phase path 310, the second output terminal of the power divider 20 is electrically connected to the second input terminal of the combiner 40 through the second phase path 320, the first output terminal of the combiner 40 is electrically connected to the first RF output terminal 510, and the second output terminal of the combiner 40 is electrically connected to the second RF output terminal 520.

[0042] Specifically, Figure 1 and Figure 2 In the embodiment shown, a two-input two-output multi-channel output RF amplifier is used as an example for description. Among them, at least one RF input terminal 10 includes a first RF input terminal 110 and a second RF input terminal 120. The two RF output terminals 50 include a first RF output terminal 510 and a second RF output terminal 520. The two phase paths 30 include a first phase path 310 and a second phase path 320. In the first working mode, as Figure 2 In the illustrated embodiment, when the first RF input terminal 110 sends an RF input signal to the first input terminal of the power divider 20, the power divider 20 divides the RF input signal into a first RF signal group, the first RF signal group includes a first RF signal and a second RF signal, wherein the first RF signal is transmitted to the first input terminal of the combiner 40 through the first phase path 310, and the second RF signal is transmitted to the second input terminal of the combiner 40 through the second phase path 320. The combiner 40 synthesizes a first RF output signal according to the first RF signal transmitted by the first phase path 310 and the second RF signal transmitted by the second phase path 320, and outputs it through the first RF output terminal 510, thereby controlling the output of the first RF output terminal 510 through the first RF input terminal 110.

[0043] In yet another embodiment, Figure 3 FIG. 1 is a circuit diagram of another working process of a multi-channel output radio frequency amplifier device provided by an embodiment of the present invention. Figure 2 and Figure 3The embodiment shown is the second working mode of the two-input two-output multi-channel output RF amplifier device. In the second working mode, when the second RF input terminal 120 sends the RF input signal to the second input terminal of the power divider 20, the power divider 20 divides the RF input signal into a second RF signal group, and the second RF signal group includes a first RF signal and a second RF signal, wherein the second RF signal is transmitted to the first input terminal of the combiner 40 through the first phase path 310, and the first RF signal is transmitted to the second input terminal of the combiner 40 through the second phase path 320. The combiner 40 synthesizes the second RF output signal according to the second RF signal of the transmission phase of the first phase path 310 and the first RF signal transmitted by the second phase path 320, and outputs it through the second RF output terminal 520, thereby controlling the output of the second RF output terminal 520 through the second RF input terminal 120.

[0044] It should be noted that, in the embodiment of the present invention, the phase of the first RF signal is 0°, and the phase of the second RF signal is 90°, but the embodiment of the present invention is not limited to this. In other embodiments, the first RF signal and the second RF signal may also be other combinations.

[0045] It is understandable that the RF signal received by the first input end of the combiner 40 in the first working mode is different from the RF signal received by the first input end of the combiner 40 in the second working mode, and the RF signal received by the second input end of the combiner 40 in the first working mode is different from the RF signal received by the second input end of the combiner 40 in the second working mode. Furthermore, in the first working mode and the second working mode, the output end of the combiner 40 outputs different RF output signals, thereby realizing multi-channel output. It should also be noted that the first working mode and the second working mode cannot be performed simultaneously.

[0046] Optional, Figure 4 This is a circuit diagram of the working process of another multi-channel output radio frequency amplifier provided by an embodiment of the present invention. Figure 5 This is another circuit diagram of the working process of a multi-channel output radio frequency amplifier provided by an embodiment of the present invention. Figure 4 and Figure 5, at least one RF input terminal 10 includes a third RF input terminal 130. The multi-channel output RF amplification device also includes a switch unit 60. The two phase paths 30 include a first phase path 310 and a second phase path 320, and the two RF output terminals 50 include a first RF output terminal 510 and a second RF output terminal 520. The third RF input terminal 130 is electrically connected to a first terminal of the switch unit 60, a second terminal of the switch unit 60 is electrically connected to a first input terminal of the power divider 20, a third terminal of the switch unit 60 is electrically connected to a second input terminal of the power divider 20, a first output terminal of the power divider 20 is electrically connected to a first input terminal of the combiner 40 through the first phase path 310, a second output terminal of the power divider 20 is electrically connected to a second input terminal of the combiner 40 through the second phase path 320, a first output terminal of the combiner 40 is electrically connected to a first RF output terminal 510, and a second output terminal of the combiner 40 is electrically connected to a second RF output terminal 520.

[0047] Specifically, Figure 4 and Figure 5 In the embodiment shown, a multi-channel output RF amplifier with one input and two outputs is used as an example for description. Among them, at least one RF input terminal 10 includes a third RF input terminal, and the two RF output terminals 50 include a first RF output terminal 510 and a second RF output terminal 520. The two phase paths 30 include a first phase path 310 and a second phase path 320. Figure 4 The embodiment shown is the first working mode of a multi-channel output RF amplifier device with one input and two outputs. In the first working mode, the first end and the second end of the switch unit 60 are turned on, and the third RF input end 130 is turned on with the first input end of the power divider 20, that is, the third RF input end 130 sends the RF input signal to the first input end of the power divider 20. At this time, the power divider 20 divides the RF input signal into a first RF signal group, and the first RF signal group includes a first RF signal and a second RF signal. Specifically, the first RF signal divided by the power divider 20 is transmitted to the first input end of the combiner 40 through the first phase path 310, and the second RF signal divided by the power divider 20 is transmitted to the second input end of the combiner 40 through the second phase path 320. The combiner 40 synthesizes the first RF output signal according to the first RF signal of the first phase path 310 transmission phase and the second RF signal transmitted by the second phase path 320, and outputs it through the first RF output end 510, thereby controlling the output of the first RF output end 510 through the third RF input end 130.

[0048] like Figure 5The embodiment shown is the second working mode of a multi-channel output RF amplifier device with one input and two outputs. In the second working mode, the first end and the third end of the switch unit 60 are turned on, and the third RF input end 130 is turned on with the second input end of the power divider 20, that is, the third RF input end 130 sends the RF input signal to the second input end of the power divider 20. At this time, the power divider 20 divides the RF input signal into a second RF signal group, and the first RF signal group includes a first RF signal and a second RF signal. Specifically, the first RF signal divided by the power divider 20 is transmitted to the second input end of the combiner 40 through the second phase path 320, and the second RF signal divided by the power divider 20 is transmitted to the first input end of the combiner 40 through the first phase path 310. The combiner 40 synthesizes the second RF output signal according to the second RF signal transmitted by the first phase path 310 and the first RF signal transmitted by the second phase path 320, and outputs it through the second RF output end 520, thereby controlling the output of the second RF output end 520 through the third RF input end 130. Thus, in the one-input two-output multi-channel RF amplifier device, the first working mode and the second working mode are switched by the switch unit 60, so that the output end of the combiner 40 outputs different RF output signals, that is, multi-channel output is achieved.

[0049] Optionally, based on the above embodiment, continue to refer to Figure 1 and Figure 2 The phase path 30 includes a first phase path 310 and a second phase path 320. The first phase path 310 includes a first driving amplifier circuit 311 and a first output amplifier circuit 312. The input end of the first driving amplifier circuit 311 is electrically connected to the first output end of the power divider 20, the output end of the first driving amplifier circuit 311 is electrically connected to the input end of the first output amplifier circuit 312, and the output end of the first output amplifier circuit 312 is electrically connected to the first input end of the combiner 40. The first driving amplifier circuit 311 and the first output amplifier circuit 312 are used to amplify the radio frequency signal output from the first output end of the power divider 20. The second phase path 320 includes a second driving amplifier circuit 321 and a second output amplifier circuit 322, the input end of the second driving amplifier circuit 321 is electrically connected to the second output end of the power divider 20, the output end of the second driving amplifier circuit 321 is electrically connected to the input end of the second output amplifier circuit 322, and the output end of the second output amplifier circuit 322 is electrically connected to the second input end of the combiner 40. The second driving amplifier circuit 321 and the second output amplifier circuit 322 are used to amplify the radio frequency signal output from the second output end of the power divider 20 .

[0050] Specifically, the first drive amplifier circuit 311 includes a first drive amplifier U1, a first resistor R1, a first capacitor C1, a second resistor R2, a first voltage source V1 and a second capacitor C2. The first output amplifier circuit 312 includes a first output amplifier U2, a radio frequency power supply device U3, a third capacitor C3, a third resistor R3, a fourth capacitor C4, a second voltage source V2 and a fifth capacitor C5. The first plate of the first capacitor C1 is electrically connected to the first end of the first resistor R1 and the first output end of the power divider 20, respectively, the second end of the first resistor R1 is electrically connected to the input end of the first drive amplifier U1, the output end of the first drive amplifier U1 is electrically connected to the first end of the second resistor R2, the second end of the second resistor R2 is electrically connected to the positive terminal of the first voltage source V1 and the first plate of the second capacitor V1, respectively, and the second plate of the first capacitor V1, the negative terminal of the first voltage source V1 and the second plate of the second capacitor C2 are all electrically connected to the ground terminal. The third capacitor C3 is connected in series between the output end of the first driving amplifier U1 and the input end of the first output amplifier U2, the output end of the first output amplifier U2 is electrically connected to the first end of the RF power supply device U3 and the first end of the third resistor R3, the second end of the third resistor R3 is electrically connected to the first plate of the fourth capacitor C4 and the first input end of the combiner 40, and the second plate of the fourth capacitor C4 is electrically connected to the ground end. The second end of the RF power supply device U3 is electrically connected to the positive terminal of the second voltage source V2 and the first plate of the fifth capacitor C5, respectively, and the negative terminal of the second voltage source V2 and the second plate of the fifth capacitor C5 are both electrically connected to the ground end. In this way, the above circuit structure ensures that the first driving amplifier circuit 311 and the first output amplifier circuit 312 are used to amplify the RF signal output from the first output end of the power divider 20.

[0051] It should be noted that the second driving amplifier circuit 321 and the second output amplifier circuit 322 have the same circuit structure as the first driving amplifier circuit 311 and the first output amplifier circuit 312, and the present invention will not describe them one by one.

[0052] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A multi-channel output radio frequency amplifier, characterized in that: The multi-channel output radio frequency amplification device comprises at least one radio frequency input terminal, a power divider, two phase paths, a combiner and two radio frequency output terminals; At least one of the radio frequency input terminals is electrically connected to an input terminal of the power divider, and the two output terminals of the power divider are electrically connected to the two phase paths respectively; The two phase paths are electrically connected to the two input terminals of the combiner correspondingly, and the two output terminals of the combiner are electrically connected to the two RF output terminals correspondingly; The power divider is used to divide the radio frequency input signals of different radio frequency input terminals into different radio frequency signal groups, wherein the radio frequency signal group includes two radio frequency signals with equal amplitudes and a phase difference of 90°; The phase path is used to transmit the radio frequency signal; The radio frequency signal group includes a first radio frequency signal group and a second radio frequency signal group, wherein a transmission path of two radio frequency signals in the first radio frequency signal group is different from a transmission path of two radio frequency signals in the second radio frequency signal group; The combiner is used to combine the two RF signals of the RF signal group into one RF output signal, and output it through the corresponding RF output terminal, thereby realizing channel selection of different RF output terminals.

2. The multi-channel output radio frequency amplifier device according to claim 1, characterized in that: The two radio frequency input terminals include a first radio frequency input terminal and a second radio frequency input terminal; The two phase paths include a first phase path and a second phase path, and the two radio frequency output ends include a first radio frequency output end and a second radio frequency output end; The first RF input end is electrically connected to the first input end of the power divider, the second RF input end is electrically connected to the second input end of the power divider, the first output end of the power divider is electrically connected to the first input end of the combiner through the first phase path, the second output end of the power divider is electrically connected to the second input end of the combiner through the second phase path, the first output end of the combiner is electrically connected to the first RF output end, and the second output end of the combiner is electrically connected to the second RF output end.

3. The multi-channel output radio frequency amplifier device according to claim 2, characterized in that: When the first RF input end sends an RF input signal to the first input end of the power divider, the first RF signal divided by the power divider is transmitted through the first phase path, and the second RF signal divided by the power divider is transmitted through the second phase path. The combiner synthesizes a first RF output signal according to the first RF signal transmitted by the first phase path and the second RF signal transmitted by the second phase path, and outputs it through the first RF output end.

4. The multi-channel output radio frequency amplifier device according to claim 2, characterized in that: When the second RF input end sends an RF input signal to the second input end of the power divider, the first RF signal divided by the power divider is transmitted through the second phase path, and the second RF signal divided by the power divider is transmitted through the first phase path. The combiner synthesizes the second RF output signal according to the second RF signal transmitted by the first phase path and the first RF signal transmitted by the second phase path, and outputs it through the second RF output end.

5. The multi-channel output radio frequency amplifier device according to claim 3 or 4, characterized in that: The phase of the first radio frequency signal includes 0°, and the phase of the second radio frequency signal includes 90°.

6. The multi-channel output radio frequency amplifier device according to claim 1, characterized in that: At least one of the RF input terminals includes a third RF input terminal; The multi-channel output radio frequency amplification device further includes a switch unit; The two phase paths include a first phase path and a second phase path, and the two radio frequency output ends include a first radio frequency output end and a second radio frequency output end; The third RF input end is electrically connected to the first end of the switch unit, the second end of the switch unit is electrically connected to the first input end of the power divider, the third end of the switch unit is electrically connected to the second input end of the power divider, the first output end of the power divider is electrically connected to the first input end of the combiner through the first phase path, the second output end of the power divider is electrically connected to the second input end of the combiner through the second phase path, the first output end of the combiner is electrically connected to the first RF output end, and the second output end of the combiner is electrically connected to the second RF output end.

7. The multi-channel output radio frequency amplifier device according to claim 6, characterized in that: When the first end and the second end of the switch unit are turned on, the third RF input end is turned on with the first input end of the power divider, the first RF signal divided by the power divider is transmitted through the first phase path, and the second RF signal divided by the power divider is transmitted through the second phase path. The combiner synthesizes a first RF output signal according to the first RF signal transmitted by the first phase path and the second RF signal transmitted by the second phase path, and outputs it through the first RF output end.

8. The multi-channel output radio frequency amplifier device according to claim 6, characterized in that: When the first end and the third end of the switch unit are turned on, the third RF input end is turned on with the second input end of the power divider, the first RF signal divided by the power divider is transmitted through the second phase path, the second RF signal divided by the power divider is transmitted through the first phase path, and the combiner synthesizes the second RF output signal according to the second RF signal transmitted by the first phase path and the first RF signal transmitted by the second phase path, and outputs it through the second RF output end.

9. The multi-output radio frequency amplifier device according to claim 1, characterized in that: The phase path includes a first phase path and a second phase path; The first phase path includes a first driving amplifier circuit and a first output amplifier circuit, the input end of the first driving amplifier circuit is electrically connected to the first output end of the power divider, the output end of the first driving amplifier circuit is electrically connected to the input end of the first output amplifier circuit, and the output end of the first output amplifier circuit is electrically connected to the first input end of the combiner; The second phase path includes a second drive amplifier circuit and a second output amplifier circuit, the input end of the second drive amplifier circuit is electrically connected to the second output end of the power divider, the output end of the second drive amplifier circuit is electrically connected to the input end of the second output amplifier circuit, and the output end of the second output amplifier circuit is electrically connected to the second input end of the combiner.

10. The multi-channel output radio frequency amplifier device according to claim 9, characterized in that: The first driving amplifier circuit includes a first driving amplifier, a first resistor, a first capacitor, a second resistor, a first voltage source and a second capacitor; The first output amplifying circuit includes a first output amplifier, a radio frequency power supply device, a third capacitor, a third resistor, a fourth capacitor, a second voltage source and a fifth capacitor; The first electrode plate of the first capacitor is electrically connected to the first end of the first resistor and the first output end of the power divider, respectively; the second end of the first resistor is electrically connected to the input end of the first driving amplifier, the output end of the first driving amplifier is electrically connected to the first end of the second resistor, the second end of the second resistor is electrically connected to the positive end of the first voltage source and the first electrode plate of the second capacitor, respectively; the second electrode plate of the first capacitor, the negative end of the first voltage source and the second electrode plate of the second capacitor are all electrically connected to the ground end; The third capacitor is connected in series between the output end of the first driving amplifier and the input end of the first output amplifier, the output end of the first output amplifier is electrically connected to the first end of the RF power supply device and the first end of the third resistor respectively, the second end of the third resistor is electrically connected to the first plate of the fourth capacitor and the first input end of the combiner respectively, and the second plate of the fourth capacitor is electrically connected to the ground end; The second end of the RF power supply device is electrically connected to the positive end of the second voltage source and the first plate of the fifth capacitor respectively, and the negative end of the second voltage source and the second plate of the fifth capacitor are electrically connected to the ground end.

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