Radio frequency device and equipment

Abstract

The embodiment of the invention provides a radio frequency device and equipment. The radio frequency device comprises a frequency division unit, a first power amplifier and a second power amplifier. The frequency division unit comprises a first output end and a second output end. The frequency division unit is used for receiving an initial multi-band analog signal, performing frequency division on the initial multi-band analog signal, outputting a first single-frequency signal through a first output end, and outputting a second single-frequency signal through a second output end. The frequency of the first single-frequency signal is different from that of the second single-frequency signal. The input end of the first power amplifier is electrically connected with the first output end of the frequency division unit, and the first power amplifier is used for amplifying one path of first single-frequency signal. And the input end of the second power amplifier is electrically connected with the second output end of the frequency division unit, and the second power amplifier is used for amplifying one path of second single-frequency signal. The radio frequency device is used for solving the problem that the cost of the radio frequency device is sharply increased along with increase of signal frequency band maturity.

Description

Technical Field

[0001] This application relates to the field of radio frequency technology, and in particular, to a radio frequency device and equipment. Background Art

[0002] The radio frequency device is an important part of mobile communication, and the radio frequency device can directly affect the communication quality and customer experience of the terminal. However, with the continuous development of communication technology, the market has higher and higher requirements for radio frequency devices. Pursuing low power consumption, high performance, low cost, and small size of radio frequency devices has become the main direction of research and development for technicians.

[0003] However, for existing radio frequency devices, especially those in multi-band broadband transmission systems, their power consumption, cost, and volume all increase rapidly with the increase in the number of frequency bands of the signal to be transmitted. Summary of the Invention

[0004] In view of this, this application provides a radio frequency device and equipment to improve the problem that the power consumption, cost, and volume of existing radio frequency devices all increase rapidly with the increase in the number of frequency bands of the signal to be transmitted.

[0005] In a first aspect, an embodiment of this application provides a radio frequency device, including: a frequency division unit, a first power amplifier, and a second power amplifier. The frequency division unit includes a first output terminal and a second output terminal. The frequency division unit is configured to receive an initial multi-band analog signal, perform frequency division on the initial multi-band analog signal, and output a first single-frequency signal through the first output terminal and output a second single-frequency signal through the second output terminal. The frequency of the first single-frequency signal is different from the frequency of the second single-frequency signal. The input terminal of the first power amplifier is electrically connected to the first output terminal of the frequency division unit, and the first power amplifier is configured to perform amplification processing on one path of the first single-frequency signal. The input terminal of the second power amplifier is electrically connected to the second output terminal of the frequency division unit, and the second power amplifier is configured to perform amplification processing on one path of the second single-frequency signal.

[0006] In an embodiment of the first aspect, the initial multi-band analog signal is obtained by non-linearly correcting and performing digital-to-analog conversion on an initial multi-band digital signal.

[0007] In an embodiment of the first aspect, the frequency division unit includes: a first radio frequency channel and a heterodyne splitter. The input end of the heterodyne splitter is electrically connected to the output end of the first radio frequency channel. The heterodyne splitter includes a first output end and a second output end. The first output end of the heterodyne splitter is the first output end of the frequency division unit, and the second output end of the heterodyne splitter is the second output end of the frequency division unit. After frequency-dividing the initial multi-band analog signal, the first single-frequency signal is output through the first output end, and the second single-frequency signal is output through the second output end, including: the first radio frequency channel is configured to receive the initial multi-band analog signal, amplify the initial multi-band analog signal, and output a first multi-band analog signal. The heterodyne splitter is configured to perform frequency division processing on the first multi-band analog signal. The heterodyne splitter outputs the first single-frequency signal through the first output end of the heterodyne splitter, and outputs the second single-frequency signal through the second output end of the heterodyne splitter.

[0008] In an embodiment of the first aspect, the frequency division unit includes: a heterodyne splitter, a second radio frequency channel, and a third radio frequency channel. The heterodyne splitter includes a first output end and a second output end; the first output end of the heterodyne splitter is electrically connected to the input end of the second radio frequency channel, and the output end of the second radio frequency channel is the first output end of the frequency division unit. The second output end of the heterodyne splitter is electrically connected to the input end of the third radio frequency channel, and the output end of the third radio frequency channel is the second output end of the frequency division unit. After frequency-dividing the initial multi-band analog signal, the first single-frequency signal is output through the first output end, and the second single-frequency signal is output through the second output end, including: the heterodyne splitter is configured to receive the initial multi-band analog signal, perform frequency division processing on the first multi-band analog signal, output a first initial single-frequency signal through the first output end of the heterodyne splitter, and output a second initial single-frequency signal through the second output end of the heterodyne splitter. The second radio frequency channel is configured to amplify the first initial single-frequency signal and output the first single-frequency signal through the output end of the second radio frequency channel. The third radio frequency channel is configured to amplify the second initial single-frequency signal and output the second single-frequency signal through the output end of the third radio frequency channel.

[0009] In an embodiment of the first aspect, the frequency division unit includes a first radio frequency channel, a second radio frequency channel, a third radio frequency channel, and a different-frequency splitter. The output end of the first radio frequency channel is electrically connected to the input end of the different-frequency splitter. The different-frequency splitter includes a first output end and a second output end. The first output end of the different-frequency splitter is electrically connected to the input end of the second radio frequency channel, and the output end of the second radio frequency channel is the first output end of the frequency division unit. The second output end of the different-frequency splitter is electrically connected to the input end of the third radio frequency channel, and the output end of the third radio frequency channel is the second output end of the frequency division unit. Outputting a first single-frequency signal through the first output end and a second single-frequency signal through the second output end after frequency-dividing the initial multi-band analog signal includes: The first radio frequency channel is configured to receive the initial multi-band analog signal, perform amplification processing on the initial multi-band analog signal, and output a first multi-band analog signal. The different-frequency splitter is configured to perform frequency division processing on the first multi-band analog signal, output a first initial single-frequency signal through the first output end of the different-frequency splitter, and output a second initial single-frequency signal through the second output end of the different-frequency splitter. The second radio frequency channel is configured to perform amplification processing on the first initial single-frequency signal and output a first single-frequency signal through the output end of the second radio frequency channel. The third radio frequency channel is configured to perform amplification processing on the second initial single-frequency signal and output a second single-frequency signal through the output end of the third radio frequency channel.

[0010] In an embodiment of the first aspect, the frequency division unit further includes a third output end. After frequency-dividing the initial multi-band analog signal, the frequency division unit outputs a third single-frequency signal through the third output end. The frequency of the third single-frequency signal, the frequency of the first single-frequency signal, and the frequency of the second single-frequency signal are different from each other. The radio frequency device further includes: a third power amplifier. The input end of the third power amplifier is electrically connected to the third output end, and the third power amplifier is configured to perform amplification processing on a path of the third single-frequency signal.

[0011] In a second aspect, the present application further provides a radio frequency device, including: a first frequency division unit, a second frequency division unit, a first multi-input power amplifier, and a second multi-input power amplifier. The first frequency division unit includes a first output terminal and a second output terminal. The first frequency division unit is configured to receive a first initial multi-band analog signal, perform frequency division on the first initial multi-band analog signal, and output a first single-frequency signal through the first output terminal of the first frequency division unit and output a second single-frequency signal through the second output terminal of the first frequency division unit. The frequency of the first single-frequency signal is different from the frequency of the second single-frequency signal. The second frequency division unit includes a first output terminal and a second output terminal. The second frequency division unit is configured to receive a second initial multi-band analog signal, perform frequency division on the second initial multi-band analog signal, and output a first single-frequency signal through the first output terminal of the second frequency division unit and output a second single-frequency signal through the second output terminal of the second frequency division unit. The first multi-input power amplifier includes a first input terminal and a second input terminal. The first input terminal of the first multi-input power amplifier is electrically connected to the first output terminal of the first frequency division unit. The second input terminal of the first multi-input power amplifier is electrically connected to the first output terminal of the second frequency division unit. The first multi-input power amplifier is configured to amplify at least two first single-frequency signals. The second power amplifier includes a first input terminal and a second input terminal. The first input terminal of the second multi-input power amplifier is electrically connected to the second output terminal of the first frequency division unit. The second input terminal of the second multi-input power amplifier is electrically connected to the second output terminal of the second frequency division unit. The second multi-input power amplifier is configured to amplify at least two second single-frequency signals.

[0012] In an embodiment of the second aspect, the first initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least two first multi-band digital signals. The second initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least two first multi-band digital signals.

[0013] In an embodiment of the second aspect, the first frequency division unit includes: a first shared radio frequency channel and a first different-frequency splitter. The input end of the first different-frequency splitter is electrically connected to the output end of the first shared radio frequency channel. The first different-frequency splitter includes a first output end and a second output end. The first output end of the first different-frequency splitter is the first output end of the first frequency division unit. The second output end of the first different-frequency splitter is the second output end of the first frequency division unit. After frequency-dividing the first initial multi-band analog signal, a first single-frequency signal is output through the first output end of the first frequency division unit, and a second single-frequency signal is output through the second output end of the first frequency division unit, which includes: the first shared radio frequency channel is used to receive the first initial multi-band analog signal, perform amplification processing on the first initial multi-band analog signal, and output a first multi-band signal, and the first multi-band signal is an analog signal. The first different-frequency splitter is used to perform frequency division processing on the first multi-band signal, output a first single-frequency signal through the first output end of the first different-frequency splitter, and output a second single-frequency signal through the second output end of the first different-frequency splitter.

[0014] and / or,

[0015] The second frequency division unit includes: a second shared radio frequency channel and a second different-frequency splitter. The input end of the second different-frequency splitter is electrically connected to the output end of the second shared radio frequency channel. The second different-frequency splitter includes a first output end and a second output end. The first output end of the second different-frequency splitter is the first output end of the second frequency division unit. The second output end of the second different-frequency splitter is the second output end of the second frequency division unit. After frequency-dividing the second initial multi-band analog signal, a first single-frequency signal is output through the first output end of the second frequency division unit, and a second single-frequency signal is output through the second output end of the second frequency division unit, which includes: the second shared radio frequency channel is used to receive the second initial multi-band analog signal, perform amplification processing on the second initial multi-band analog signal, and output a second multi-band signal, and the second multi-band signal is an analog signal. The second different-frequency splitter is used to perform frequency division processing on the second multi-band signal, output a first single-frequency signal through the first output end of the second different-frequency splitter, and output a second single-frequency signal through the second output end of the second different-frequency splitter.

[0016] In an embodiment of the second aspect, the first frequency division unit includes: a first different-frequency splitter, a first single-frequency radio frequency channel, and a second single-frequency radio frequency channel. The first different-frequency splitter includes a first output end and a second output end. The input end of the first single-frequency radio frequency channel is electrically connected to the first output end of the first different-frequency splitter, and the output end of the first single-frequency radio frequency channel is the first output end of the first frequency division unit. The input end of the second single-frequency radio frequency channel is electrically connected to the second output end of the first different-frequency splitter, and the output end of the second single-frequency radio frequency channel is the second output end of the first frequency division unit. Outputting a first single-frequency signal through the first output end of the first frequency division unit and outputting a second single-frequency signal through the second output end of the first frequency division unit after frequency-dividing the first initial multi-band analog signal includes: the first different-frequency splitter is configured to receive the first initial multi-band analog signal, perform frequency division on the first initial multi-band analog signal, output a first initial single-frequency signal through the first output end of the first different-frequency splitter, and output a second initial single-frequency signal through the second output end of the first different-frequency splitter. The first single-frequency radio frequency channel is configured to amplify the first initial single-frequency signal and output the first single-frequency signal through the output end. The second single-frequency radio frequency channel is configured to amplify the second initial single-frequency signal and output the second single-frequency signal through the output end.

[0017] and / or,

[0018] The second frequency division unit includes: a second different-frequency splitter, a third single-frequency radio frequency channel, and a fourth single-frequency radio frequency channel. The second different-frequency splitter includes a first output end and a second output end. The input end of the third single-frequency radio frequency channel is electrically connected to the first output end of the second different-frequency splitter, and the output end of the third single-frequency radio frequency channel is the first output end of the second frequency division unit. The input end of the fourth single-frequency radio frequency channel is electrically connected to the second output end of the second different-frequency splitter, and the output end of the fourth single-frequency radio frequency channel is the second output end of the second frequency division unit. Outputting a first single-frequency signal through the first output end of the second frequency division unit and outputting a second single-frequency signal through the second output end of the second frequency division unit after frequency-dividing the second initial multi-band analog signal includes: the second different-frequency splitter is configured to receive the second initial multi-band analog signal, perform frequency division on the second initial multi-band analog signal, output a first initial single-frequency signal through the first output end of the second different-frequency splitter, and output a second initial single-frequency signal through the second output end of the second different-frequency splitter. The third single-frequency radio frequency channel is configured to amplify the first initial single-frequency signal and output the first single-frequency signal through the output end of the third single-frequency radio frequency channel. The fourth single-frequency radio frequency channel is configured to amplify the second initial single-frequency signal and output the second single-frequency signal through the output end of the fourth single-frequency radio frequency channel.

[0019] In an embodiment of the second aspect, the first frequency division unit includes: a first shared radio frequency channel, a first heterodyne splitter, a first single-frequency radio frequency channel, and a second single-frequency radio frequency channel. The input end of the first heterodyne splitter is electrically connected to the output end of the first shared radio frequency channel. The first heterodyne splitter includes a first output end and a second output end. The input end of the first single-frequency radio frequency channel is electrically connected to the first output end of the first heterodyne splitter, and the output end of the first single-frequency radio frequency channel is the first output end of the first frequency division unit. The input end of the second single-frequency radio frequency channel is electrically connected to the second output end of the first heterodyne splitter, and the output end of the second single-frequency radio frequency channel is the second output end of the first frequency division unit. After frequency-dividing the first initial multi-band analog signal, a first single-frequency signal is output through the first output end of the first frequency division unit, and a second single-frequency signal is output through the second output end of the first frequency division unit, which includes: The first shared radio frequency channel is configured to receive the first initial multi-band analog signal, perform amplification processing on the first initial multi-band analog signal, and output a first multi-band signal, where the first multi-band signal is an analog signal. The first heterodyne splitter is configured to perform frequency division processing on the first multi-band signal, and output a first initial single-frequency signal through the first output end of the first heterodyne splitter. A second initial single-frequency signal is output through the second output end of the first heterodyne splitter. The first single-frequency radio frequency channel is configured to perform amplification processing on the first initial single-frequency signal, and output a first single-frequency signal through the output end of the first single-frequency radio frequency channel. The second single-frequency radio frequency channel is configured to perform amplification processing on the second initial single-frequency signal, and output a second single-frequency signal through the output end of the second single-frequency radio frequency channel.

[0020] and / or,

[0021] The second frequency division unit includes: a second shared radio frequency channel, a second different-frequency splitter, a third single-frequency radio frequency channel, and a fourth single-frequency radio frequency channel. The input end of the second different-frequency splitter is electrically connected to the output end of the second shared radio frequency channel. The second different-frequency splitter includes a first output end and a second output end. The input end of the third single-frequency radio frequency channel is electrically connected to the first output end of the second different-frequency splitter, and the output end of the third single-frequency radio frequency channel is the first output end of the second frequency division unit. The input end of the fourth single-frequency radio frequency channel is electrically connected to the second output end of the second different-frequency splitter, and the output end of the fourth single-frequency radio frequency channel is the second output end of the second frequency division unit. After frequency-dividing the second initial multi-band analog signal, the first single-frequency signal is output through the first output end of the second frequency division unit, and the second single-frequency signal is output through the second output end of the second frequency division unit, including: The second shared radio frequency channel is used to receive the second initial multi-band analog signal, and perform amplification processing on the second initial multi-band analog signal, and output a second multi-band signal, and the second multi-band signal is an analog signal. The second different-frequency splitter is used to perform frequency division processing on the second multi-band signal, output a first initial single-frequency signal through the first output end of the second different-frequency splitter, and output a second initial single-frequency signal through the second output end of the second different-frequency splitter. The third single-frequency radio frequency channel is used to perform amplification processing on the first initial single-frequency signal, and output the first single-frequency signal through the output end of the third single-frequency radio frequency channel. The fourth single-frequency radio frequency channel is used to perform amplification processing on the second initial single-frequency signal, and output the second single-frequency signal through the output end of the fourth single-frequency radio frequency channel.

[0022] In an embodiment of the second aspect, the first frequency division unit further includes a third output end. After frequency-dividing the first initial multi-band analog signal, the first frequency division unit further outputs a third single-frequency signal through the third output end of the first frequency division unit. The frequency of the third single-frequency signal, the frequency of the first single-frequency signal, and the frequency of the second single-frequency signal are different from each other. The second frequency division unit further includes a third output end. After frequency-dividing the second initial multi-band analog signal, the second frequency division unit further outputs a third single-frequency signal through the third output end of the second frequency division unit. The radio frequency device further includes: a third multi-input power amplifier. The third multi-input power amplifier includes a first input end and a second input end. The first input end of the third multi-input power amplifier is electrically connected to the third output end in the first frequency division unit. The second input end of the third multi-input power amplifier is electrically connected to the third output end in the second frequency division unit. The third multi-input power amplifier is used to perform amplification processing on at least two third single-frequency signals.

[0023] In an embodiment of the second aspect, it further includes: a third frequency division unit, which includes a first output terminal and a second output terminal. The third frequency division unit is configured to receive a third initial multi-band analog signal, perform frequency division on the third initial multi-band analog signal, output a first single-frequency signal through the first output terminal of the third frequency division unit, and output a second single-frequency signal through the second output terminal of the third frequency division unit. The first multi-input power amplifier further includes a third input terminal. The third input terminal of the first multi-input power amplifier is electrically connected to the first output terminal of the third frequency division unit. The first multi-input power amplifier is configured to amplify at least three first single-frequency signals. The second multi-input power amplifier further includes a third input terminal. The third input terminal of the second multi-input power amplifier is electrically connected to the second output terminal of the third frequency division unit. The second multi-input power amplifier is configured to amplify at least three second single-frequency signals.

[0024] In an embodiment of the second aspect, the third initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least two third multi-band digital signals.

[0025] In an embodiment of the second aspect, the first initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least two first multi-band digital signals, and the second initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least two first multi-band digital signals. The radio frequency device further includes: a first digital pre-distortion unit, a first signal separation unit, a second digital pre-distortion unit, a second signal separation unit, a first digital-to-analog converter, and a second digital-to-analog converter. The first digital pre-distortion unit is configured to receive the initial multi-band digital signal and perform multi-band non-linear correction on the initial multi-band digital signal, and output a first digital signal, where the first digital signal is a multi-band digital signal. The input end of the first signal separation unit is electrically connected to the output end of the first digital pre-distortion unit. The first signal separation unit includes a first output end and a second output end. The first signal separation unit is configured to separate the first digital signal, output a first multi-band digital signal through the first output end of the first signal separation unit, and output a second multi-band digital signal through the second output end of the first signal separation unit. The second digital pre-distortion unit is configured to receive the initial multi-band digital signal and perform multi-band non-linear correction on the initial multi-band digital signal, and output a second digital signal, where the second digital signal is a multi-band digital signal. The input end of the second signal separation unit is electrically connected to the output end of the second digital pre-distortion unit. The second signal separation unit includes a first output end and a second output end. The second signal separation unit is configured to separate the second digital signal, output a first multi-band digital signal through the first output end of the second signal separation unit, and output a second multi-band digital signal through the second output end of the second signal separation unit. The first digital-to-analog converter includes a first input end and a second input end. The first input end of the first digital-to-analog converter is electrically connected to the first output end of the first signal separation unit. The second input end of the first digital-to-analog converter is electrically connected to the first output end of the second signal separation unit. The first digital-to-analog converter is configured to perform digital-to-analog conversion on at least two first multi-band digital signals to obtain a first initial multi-band analog signal. The second digital-to-analog converter includes a first input end and a second input end. The first input end of the second digital-to-analog converter is electrically connected to the second output end of the first signal separation unit. The second input end of the second digital-to-analog converter is electrically connected to the second output end of the second signal separation unit. The second digital-to-analog converter is configured to perform digital-to-analog conversion on at least two second multi-band digital signals to obtain a second initial multi-band analog signal.

[0026] In an embodiment of the second aspect, the first initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least three first multi-band digital signals. The first frequency division unit further includes a third output terminal. After the first frequency division unit performs frequency division on the first initial multi-band analog signal, a third single-frequency signal is also output through the third output terminal of the first frequency division unit. The frequencies of the third single-frequency signal, the first single-frequency signal, and the second single-frequency signal are different from each other. The second initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least three second multi-band digital signals. The second frequency division unit further includes a third output terminal. After the second frequency division unit performs frequency division on the second initial multi-band analog signal, a third single-frequency signal is also output through the third output terminal of the second frequency division unit. The radio frequency device further includes: a third digital predistortion unit, a third signal separation unit, and a third multi-input power amplifier. The third digital predistortion unit is configured to receive the initial multi-band digital signal and perform multi-band non-linear correction on the initial multi-band digital signal, and output a third digital signal, where the third digital signal is a multi-band digital signal. The input terminal of the third signal separation unit is electrically connected to the output terminal of the third digital predistortion unit. The third signal separation unit includes a first output terminal and a second output terminal. The third signal separation unit is configured to separate the third digital signal, output a first multi-band digital signal through the first output terminal of the third signal separation unit, and output a second multi-band digital signal through the second output terminal of the third signal separation unit. The first digital-to-analog converter further includes a third input terminal, and the first output terminal of the third signal separation unit is electrically connected to the third input terminal of the first digital-to-analog converter. The first digital-to-analog converter is configured to perform digital-to-analog conversion on at least three first multi-band digital signals into a first initial multi-band analog signal. The second digital-to-analog converter further includes a third input terminal, and the second output terminal of the third signal separation unit is electrically connected to the third input terminal of the second digital-to-analog converter. The second digital-to-analog converter is configured to perform digital-to-analog conversion on at least three second multi-band digital signals into a second output multi-band analog signal. The third multi-input power amplifier includes a first input terminal and a second input terminal. The first frequency division unit further includes a third output terminal, and the second frequency division unit further includes a third output terminal. The first input terminal of the third multi-input power amplifier is electrically connected to the third output terminal in the first frequency division unit. The second input terminal of the third multi-input power amplifier is electrically connected to the third output terminal in the second frequency division unit. The third multi-input power amplifier is configured to perform amplification processing on at least two third single-frequency signals.

[0027] In an embodiment of the second aspect, the first signal separation unit further includes a third output terminal, and the third output terminal of the first signal separation unit outputs a third multi-band digital signal. The second signal separation unit further includes a third output terminal, and the third output terminal of the second signal separation unit outputs a third multi-band digital signal. The radio frequency device further includes: a third digital-to-analog converter and a third frequency division unit. The third digital-to-analog converter includes a first input terminal and a second input terminal. The first input terminal of the third digital-to-analog converter is electrically connected to the third output terminal of the first signal separator, and the second input terminal of the third digital-to-analog converter is electrically connected to the third output terminal of the second signal separator. The third digital-to-analog converter is configured to perform digital-to-analog conversion on at least two third multi-band digital signals to obtain a third initial multi-band analog signal. The input terminal of the third frequency division unit is electrically connected to the output terminal of the third digital-to-analog conversion. The third frequency division unit includes a first output terminal and a second output terminal. The third frequency division unit is configured to receive the third initial multi-band analog signal, perform frequency division on the third initial multi-band analog signal, output a first single-frequency signal through the first output terminal of the third frequency division unit, and output a second single-frequency signal through the second output terminal of the third frequency division unit. The first multi-input power amplifier further includes a third input terminal, and the third input terminal of the first multi-input power amplifier is electrically connected to the first output terminal in the third frequency division unit. The first multi-input power amplifier is configured to perform amplification processing on at least three first single-frequency signals. The second multi-input power amplifier further includes a third input terminal, and the third input terminal of the second multi-input power amplifier is electrically connected to the second output terminal in the third frequency division unit. The second multi-input power amplifier is configured to perform amplification processing on at least three second single-frequency signals.

[0028] In a third aspect, an embodiment of the present application provides a device, and the device includes the radio frequency device of the first aspect or the second aspect.

[0029] For the radio frequency device provided by the embodiment of the application, since the processing object of the frequency division unit is a multi-band analog signal, radio frequency signals of multiple bands can be processed by the same frequency division unit. Therefore, as the number of bands of the radio frequency signal increases, the cost of the frequency division unit can remain unchanged, thus solving the problem in the prior art that as the number of bands of the radio frequency signal increases, its cost and area increase linearly. Both the first power amplifier and the second power amplifier perform final stage amplification processing on signals of a single frequency, so that the first power amplifier and the second power amplifier operate at a higher efficiency, and ultimately the efficiency of the transmitting circuit is higher and the signal quality of the signal transmitted by the transmitting circuit provided by the embodiment of the present application is better. Description of the Drawings

[0030] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0031] Figure 1 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0032] Figure 2 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0033] Figure 3 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0034] Figure 4 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0035] Figure 5 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0036] Figure 6 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0037] Figure 7 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0038] Figure 8 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0039] Figure 9 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0040] Figure 10 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0041] Figure 11 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0042] Figure 12 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0043] Figure 13 Schematic diagram of a radio frequency device provided by an embodiment of the present application;

[0044] Figure 14 Schematic diagram of S parameters of a microstrip line different-frequency splitter provided by an embodiment of the present application;

[0045] Figure 15Schematic diagram of S-parameters of a medium frequency splitter provided by an embodiment of the present application. Detailed implementation manners

[0046] To better understand the technical solution of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0047] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0048] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0049] It should be understood that the term " / and / " used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, a and / or b can represent: a exists alone, a and b exist simultaneously, and b exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0050] Before introducing the embodiments of the present application specifically, the terms applied or possibly applied in the embodiments of the present application will be explained first.

[0051] In a radio frequency device, a remote radio unit (RRU) plays an important role and is a key factor in improving market competitiveness. In the remote radio unit, a power amplifier is an important component, and the power amplifier is an important factor affecting the competitiveness of the remote radio unit. Moreover, in the remote radio unit, the power consumption ratio of the power amplifier is as high as more than 50%. The working bandwidth of the remote radio unit is usually determined by the working bandwidth of the power amplifier. Therefore, improving the efficiency bandwidth of the power amplifier has become the primary task of improving the market competitiveness of radio frequency devices.

[0052] In the process of improving the efficiency of a power amplifier, high-power signals will enter the saturation region of the power amplifier, resulting in non-linear compression of the input radio frequency signal and ultimately deteriorating the signal's ACPR (Adjacent Channel Power Ratio) and EVM (Error Vector Magnitude), which affects the communication quality. Therefore, in order to improve the signal transmission quality and reduce the impact on adjacent channels, DPD (Digital Pre-Distortion) is needed to correct the power amplifier non-linearity.

[0053] The transmitting circuit in a radio frequency device can be divided into a concurrent broadband multi-band transmitting circuit and an internal broadband multi-band transmitting circuit according to the type of radio frequency channel.

[0054] Among them, the radio frequency channels in the concurrent broadband multi-band transmitting circuit are shared channels, and its power amplifier is a mixed-frequency power amplifier. That is, in the concurrent broadband multi-band transmitting circuit, the radio frequency channel is used to amplify multi-band signals, and the power amplifier is used for the final stage amplification of multi-band mixed signals. The concurrent broadband multi-band transmitting circuit can be divided into a concurrent broadband multi-band single-input transmitting circuit and a concurrent broadband multi-band multi-input transmitting circuit according to the number of signals received by the power amplifier. The concurrent broadband multi-band single-input transmitting circuit means that the power amplifier receives one multi-band mixed signal and performs the final stage amplification. The concurrent broadband multi-band multi-input transmitting circuit means that the power amplifier receives multiple multi-band mixed signals and performs the final stage amplification.

[0055] Each frequency band in the internal broadband multi-band transmitting circuit has its own independent radio frequency channel, and its power amplifier is a single-frequency power amplifier. That is, in the internal broadband multi-band transmitting circuit, the radio frequency channel is used to amplify single-band signals, and the power amplifier is used for the final stage amplification of single-band signals. The internal broadband multi-band transmitting circuit can be divided into an internal broadband multi-band single-input transmitting circuit and an internal broadband multi-band multi-input transmitting circuit according to the number of signals received by the power amplifier. The internal broadband multi-band single-input transmitting circuit means that the power amplifier receives one single-band signal and performs the final stage amplification. The internal broadband multi-band multi-input transmitting circuit means that the power amplifier receives multiple single-band signals and performs the final stage amplification.

[0056] Since the power amplifier of the concurrent broadband multi-band transmission circuit (including the concurrent broadband multi-band single-input transmission circuit and the concurrent broadband multi-band multi-input transmission circuit) performs the final amplification processing of the multi-band mixed signal, the efficiency of its power amplifier is low and the power consumption is large; and the efficiency of its power amplifier will show a decreasing trend as the number of radio frequency signal frequency bands increases. The efficiency of the power amplifier of the internally patched broadband multi-band single-input transmission circuit is 5% higher than that of the power amplifier of the concurrent broadband multi-band transmission circuit. However, as the number of frequency bands of the radio frequency signal to be transmitted increases, the number of its radio frequency channels increases linearly with the number of frequency bands. Therefore, the cost, area, and power consumption of the radio frequency channels also increase linearly relative to the concurrent broadband multi-band transmission system.

[0057] For the internally patched multi-input broadband multi-band transmission circuit compared with the internally patched single-input broadband multi-band transmission circuit, the number of radio frequency channels increases linearly with the number of digital decomposition paths. Therefore, the cost, area, and power consumption of the radio frequency channels also increase linearly.

[0058] In summary, in the existing radio frequency devices, the transmission circuit has the problems that as the number of frequency bands increases, its costs (including: radio frequency channel cost, digital-to-analog conversion cost), the area occupied by the circuit, power consumption, etc. will increase linearly, and the efficiency is relatively low.

[0059] In view of the above technical problems, the embodiments of the present application provide a radio frequency device and equipment to solve the problems in the prior art that as the number of frequency bands of the radio frequency signal to be transmitted increases, the costs, area, power consumption, etc. of the radio frequency device will increase linearly, and the efficiency is relatively low.

[0060] Please refer to Figure 1 , the embodiments of the present application provide a radio frequency device 100, including: a frequency division unit 110, a first power amplifier 101, and a second power amplifier 102. Among them, the frequency division unit 110 includes a first output terminal and a second output terminal. The frequency division unit 110 is configured to receive an initial multi-band analog signal, perform frequency division on the initial multi-band analog signal, and output a first single-frequency signal through the first output terminal and output a second single-frequency signal through the second output terminal. The frequency of the first single-frequency signal is different from the frequency of the second single-frequency signal. The input end of the first power amplifier 101 is electrically connected to the first output terminal of the frequency division unit 110, and the first power amplifier 101 is configured to perform amplification processing on one path of the first single-frequency signal. The input end of the second power amplifier 102 is electrically connected to the second output terminal of the frequency division unit 110, and the second power amplifier 102 is configured to perform amplification processing on one path of the second single-frequency signal.

[0061] In this embodiment, the function of the frequency division unit 110 is to perform frequency division processing on the initial multi-band analog signal, divide the initial multi-band analog signal into multiple single-frequency analog signals, and output at least two single-frequency signals. The first power amplifier 101 and the second power amplifier 102 are respectively used to perform final amplification on the single-frequency signals. Among them, the first power amplifier 101 is used to amplify a first single-frequency signal, and the second power amplifier 102 is used to amplify a second single-frequency signal. In some possible implementation manners, the first output end of the frequency division unit 110 outputs a first single-frequency signal. The second output end of the frequency division unit 110 outputs a second single-frequency signal. It should be noted that the fact that the first output end and the second output end of the above-mentioned frequency division unit 110 output a single-frequency signal is only an exemplary illustration and is not a specific limitation of the present application in this regard.

[0062] In this embodiment, since the processing object of the frequency division unit 110 is a multi-band analog signal, multiple bands of radio frequency signals can be processed by the same frequency division unit 110. Therefore, as the number of bands of the radio frequency signal increases, the cost of the frequency division unit 110 can remain unchanged, thus solving the problem in the prior art that as the number of bands of the radio frequency signal increases, its cost and area increase linearly. The first power amplifier 101 and the second power amplifier 102 both perform final amplification processing on the single-frequency signals, so that the first power amplifier 101 and the second power amplifier 102 operate at a higher efficiency, and finally the efficiency of the transmitting circuit is higher and the quality of the signal transmitted by the transmitting circuit provided by the embodiment of the present application is better.

[0063] Figure 2 DPD (Digital Pre-Distortion) that appears in this and subsequent figures refers to a digital pre-distortion unit, DAC (Digital to Analog Converter) is a digital-to-analog converter; PA (Power Amplifier) is a power amplifier. The signal A at the input end represents the signal of the frequency to which the first single-frequency signal belongs, and the signal B at the input end represents the signal of the frequency to which the second single-frequency signal belongs.

[0064] Please refer to Figure 2, in an embodiment of the present application, the frequency division unit 110 includes: a first radio frequency channel 111 and a different-frequency splitter 112. Among them, the input end of the different-frequency splitter 112 is electrically connected to the output end of the first radio frequency channel 111. The different-frequency splitter 112 includes a first output end and a second output end. The first output end of the different-frequency splitter 112 is the first output end of the frequency division unit 110. That is, the input end of the first power amplifier 101 is electrically connected to the first output end of the different-frequency splitter 112. The second output end of the different-frequency splitter 112 is the second output end of the frequency division unit 110. That is, the input end of the second power amplifier 102 is electrically connected to the second output end of the different-frequency splitter 112. The frequency division unit 110 divides the initial multi-band analog signal and outputs a first single-frequency signal through the first output end and a second single-frequency signal through the second output end, including: the first radio frequency channel 111 is used to receive the initial multi-band analog signal, perform amplification processing on the initial multi-band analog signal, and output a first multi-band analog signal. The different-frequency splitter 112 is used to perform frequency division processing on the first multi-band analog signal. The different-frequency splitter 112 outputs a first single-frequency signal through the first output end of the different-frequency splitter 112. The different-frequency splitter 112 outputs a second single-frequency signal through the second output end of the different-frequency splitter 112.

[0065] In this embodiment, the first radio frequency channel 111 is a multi-band signal sharing channel, which is used to perform step-by-step amplification processing on the initial multi-band analog signal. Therefore, when increasing the number of frequency bands of the radio frequency signal, the first radio frequency channel 111 can still be used to perform step-by-step amplification processing on it. The function of the different-frequency splitter 112 is to separate the received first multi-band analog signal into multiple radio frequency signals of single frequencies, and transmit the radio frequency signals of single frequencies to the corresponding power amplifier for final stage amplification. The different-frequency splitter 112 is arranged after the first radio frequency channel 111 and directly transmits the frequency-divided single-frequency signal to the power amplifier. That is, as the number of frequency bands of the radio frequency signal increases, the number, area, etc. of the first radio frequency channel 111 will not increase.

[0066] In a possible implementation manner, the first radio frequency channel 111 includes: a VGA (Variable Gain Amplifier), a pre-stage drive amplifier, and a pre-driver amplifier. The first radio frequency channel 111 is used to realize the gain adjustment and step-by-step amplification of the multi-band analog signal in the analog link.

[0067] In a possible implementation manner, the different-frequency splitter 112 may include a microstrip line, a SAW filter, or a dielectric filter, etc. The function of the different-frequency splitter 112 is to perform frequency-domain filtering on the broadband multi-band, so as to realize the separation of signals of different frequency bands. The purpose of the different-frequency splitter 112 is to realize the filtering function of the signal, so there are certain requirements for the suppression ratio, usually more than 20 dB.

[0068] Please refer to Figure 3 , in an embodiment of the present application, the frequency division unit 110 includes: a different-frequency splitter 112, a second radio frequency channel 113, and a third radio frequency channel 114. Among them, the different-frequency splitter 112 includes a first output end and a second output end. The first output end of the different-frequency splitter 112 is electrically connected to the input end of the second radio frequency channel 113, and the second output end of the different-frequency splitter 112 is electrically connected to the input end of the third radio frequency channel 114. The output end of the second radio frequency channel 113 is the first output end of the frequency division unit 110. That is, the input end of the first power amplifier 101 is electrically connected to the output end of the second radio frequency channel 113. The output end of the third radio frequency channel 114 is the second output end of the frequency division unit 110. That is, the input end of the second power amplifier 102 is electrically connected to the output end of the third radio frequency channel 114. After the frequency division unit 110 divides the initial multi-band analog signal, it outputs the first single-frequency signal through the first output end and outputs the second single-frequency signal through the second output end, including: the different-frequency splitter 112 is used to receive the initial multi-band analog signal, the different-frequency splitter 112 is used to perform frequency division processing on the first multi-band analog signal, output the first initial single-frequency signal through the first output end of the different-frequency splitter 112, and output the second initial single-frequency signal through the second output end of the different-frequency splitter 112. The second radio frequency channel 113 is used to amplify the first initial single-frequency signal and output the first single-frequency signal through the output end of the second radio frequency channel 113. The third radio frequency channel 114 is used to amplify the second initial single-frequency signal and output the second single-frequency signal through the output end of the third radio frequency channel 114.

[0069] In the embodiment of the present application, the function of the different-frequency splitter 112 is to separate the received initial multi-band analog signal into multiple initial single-frequency signals. The second radio frequency channel 113 and the third radio frequency channel 114 are dedicated radio frequency channels for single-frequency signals. For example, the second radio frequency channel 113 is used to amplify the first initial single-frequency signal with a first frequency for the final-stage power amplification by the first power amplifier 101. The third radio frequency channel 114 is used to amplify the second initial single-frequency signal with a second frequency for the final-stage power amplification by the second power amplifier 102. In a possible implementation manner, both the second radio frequency channel 113 and the third radio frequency channel 114 include: a VGA (Variable Gain Amplifier), a pre-driver amplifier, and a pre-drive amplifier. The second radio frequency channel 113 and the third radio frequency channel 114 are used to realize the gain adjustment and step-by-step amplification of the single-band analog signal in the analog link.

[0070] In the embodiment of the present application, after the heterodyne splitter 112, the corresponding single-band analog signal is subjected to gain adjustment and step-by-step amplification processing through the second radio frequency channel 113 or the third radio frequency channel 114, which can improve the efficiency of the first power amplifier 101 and the second power amplifier 102 and increase the signal quality.

[0071] Please refer to Figure 4 , in an embodiment of the present application, the frequency division unit 110 includes a first radio frequency channel 111, a second radio frequency channel 113, a third radio frequency channel 114, and a heterodyne splitter 112. Among them, the output end of the first radio frequency channel 111 is electrically connected to the input end of the heterodyne splitter 112, and the heterodyne splitter 112 includes a first output end and a second output end. The first output end of the heterodyne splitter 112 is electrically connected to the input end of the second radio frequency channel 113, and the second output end of the heterodyne splitter 112 is electrically connected to the input end of the third radio frequency channel 114. The output end of the second radio frequency channel 113 is the first output end of the frequency division unit 110. That is, the input end of the first power amplifier 101 is electrically connected to the output end of the second radio frequency channel 113. The output end of the third radio frequency channel 114 is the second output end of the frequency division unit 110. That is, the input end of the second power amplifier 102 is electrically connected to the output end of the third radio frequency channel 114. The frequency division unit 110 divides the initial multi-band analog signal and outputs the first single-frequency signal through the first output end and the second single-frequency signal through the second output end, including: the first radio frequency channel 111 is used to receive the initial multi-band analog signal, amplify the initial multi-band analog signal, and output the first multi-band analog signal. The heterodyne splitter 112 is used to amplify the first multi-band analog signal, output the first initial single-frequency signal through the first output end of the heterodyne splitter 112, and output the second initial single-frequency signal through the second output end of the heterodyne splitter 112. The second radio frequency channel 113 is used to amplify the first initial single-frequency signal and output the first single-frequency signal through the output end of the second radio frequency channel 113. The third radio frequency channel 114 is used to amplify the second initial single-frequency signal and output the second single-frequency signal through the output end of the third radio frequency channel 114.

[0072] In an embodiment, the first radio frequency channel 111 is a multi-band signal sharing channel, which is used to perform step-by-step amplification processing on the initial multi-band analog signal. Therefore, when increasing the number of frequency bands of the radio frequency signal, the first radio frequency channel 111 can still be used to perform step-by-step amplification processing on it. The function of the different-frequency splitter 112 is to separate the received first multi-band analog signal into multiple initial single-frequency signals, and the multiple initial single-frequency signals include the first initial single-frequency signal and the second initial single-frequency signal. The second radio frequency channel 113 and the third radio frequency channel 114 are dedicated radio frequency channels for single-frequency signals. For example, the second radio frequency channel 113 is used to amplify the first initial single-frequency signal with the first frequency for the final power amplification by the first power amplifier 101. The third radio frequency channel 114 is used to amplify the second initial single-frequency signal with the second frequency for the final power amplification by the second power amplifier 102. In a possible implementation manner, the first radio frequency channel 111, the second radio frequency channel 113, and the second radio frequency channel 113 all include: a VGA (Variable Gain Amplifier), a pre-driver amplifier, and a pre-driver amplifier. The first radio frequency channel 111 is used to realize the gain adjustment and step-by-step amplification of the multi-band analog signal in the analog link. The second radio frequency channel 113 and the third radio frequency channel 114 are used to realize the gain adjustment and step-by-step amplification of the single-band analog signal in the analog link. It should be noted that the above examples of the hardware components of the first radio frequency channel 111, the second radio frequency channel 113, and the second radio frequency channel 113 only illustrate the commonality of their circuit topologies, rather than the commonality of the parameters of these three radio frequency channels. It should be understood that the device parameters corresponding to the first radio frequency channel 111, the second radio frequency channel 113, and the third radio frequency channel 114 need to be set according to actual requirements, and the device parameters corresponding to the first radio frequency channel 111, the device parameters corresponding to the second radio frequency channel 113, and the device parameters corresponding to the third radio frequency channel 114 are set independently of each other.

[0073] In this embodiment, the initial multi-band analog signal is subjected to gain adjustment and step-by-step amplification through the first radio frequency channel 111, and then is divided into multiple single-frequency signals by the different-frequency splitter 112. Each single-frequency signal is further subjected to gain adjustment and step-by-step amplification through its respective dedicated radio frequency channel and then is subjected to final amplification by its respective dedicated power amplifier, which can improve the efficiency of the power amplifier.

[0074] In an embodiment of the present application, the initial multi-band analog signal is obtained by non-linearly correcting and performing digital-to-analog conversion on the initial multi-band digital signal.

[0075] Please refer to Figures 2 to 4, in an embodiment of the present application, in order to obtain an initial multi-band analog signal, the radio frequency device 100 further includes: a first digital pre-distortion unit 103, a second digital pre-distortion unit 104, and a digital-to-analog converter 105. The digital-to-analog converter 105 includes a first input terminal and a second input terminal. The output terminal of the first digital pre-distortion unit 103 is electrically connected to the first input terminal of the digital-to-analog converter 105; the output terminal of the second digital pre-distortion unit 104 is electrically connected to the second input terminal of the digital-to-analog converter 105. The first pre-digital distortion unit 103 and the second digital pre-distortion unit 104 respectively receive the initial multi-band digital signal, perform multi-band non-linear correction, and then input the corrected signal to the first digital-to-analog converter 105. The first digital-to-analog converter 105 performs digital-to-analog conversion on the received digital signal, obtains the initial multi-band analog signal and outputs it.

[0076] In this embodiment, since the digital-to-analog converter 105 is used to process the multi-band analog signal, when the number of frequency bands of the radio frequency signal is increased, there is no need to increase the number of digital-to-analog converters 105.

[0077] Please refer to Figure 5 and Figure 6 , in an embodiment of the present application, the frequency division unit 110 further includes a third output terminal. After the frequency division unit 110 divides the initial multi-band analog signal, it also outputs a third single-frequency signal through the third output terminal of the frequency division unit 110. The frequencies of the third single-frequency signal, the first single-frequency signal, and the second single-frequency signal are different from each other. The radio frequency device 100 further includes: a third power amplifier 109. The frequency division unit 110 includes: a third output terminal. The input terminal of the third power amplifier 109 is electrically connected to the third output terminal of the frequency division unit 110. The third power amplifier 109 is used to amplify a path of the third single-frequency signal.

[0078] In this embodiment, the frequency division unit 110 outputs a first single-frequency signal, a second single-frequency signal, and a third single-frequency signal. Among them, any two of the frequencies of the first single-frequency signal, the second single-frequency signal, and the third single-frequency signal are different. The third power amplifier 109 is used to amplify a path of the third single-frequency signal, so as to ensure that the efficiency of the third power amplifier 109 is relatively high and the signal quality of the third single-frequency signal is good.

[0079] The specific implementation manner of this embodiment may refer to the implementation manner of the foregoing embodiment. In a possible implementation manner, the frequency of the third single-frequency signal is the third frequency. A radio frequency channel for gain adjustment and step-by-step amplification of the analog signal of the third frequency is provided between the different-path frequency divider and the third power amplifier 109, and the radio frequency channel outputs the third single-frequency signal. This radio frequency channel is a radio frequency channel exclusively used for the analog signal of the third frequency.

[0080] Please refer toFigure 5 and Figure 6 In an embodiment of the present application, the radio frequency device 100 further includes: a third digital pre-distortion unit 108. The output end of the third digital pre-distortion unit 108 is electrically connected to the third input end of the digital-to-analog converter 105, and the third output end of the different-frequency splitter 112 is electrically connected to the input end of the third power amplifier 109.

[0081] Please refer to Figure 5 , in an embodiment of the present application, the frequency division unit 110 includes a fourth radio frequency channel 115. The radio frequency device 100 further includes: a third digital pre-distortion unit 108. The digital-to-analog converter 105 includes a third input end. The output end of the third digital pre-distortion unit 108 is electrically connected to the third input end of the digital-to-analog converter 105. The different-frequency splitter 112 includes a third output end. The third output end of the different-frequency splitter 112 is electrically connected to the input end of the fourth radio frequency channel 115. The output end of the fourth radio frequency channel 115 is electrically connected to the input end of the third power amplifier 109.

[0082] In an embodiment of the present application, when the radio frequency device 100 includes the second radio frequency channel 113 and the third radio frequency channel 114, the first digital pre-distortion unit 103 is further configured to perform non-linear correction on the signal of the frequency to which the first single-frequency signal belongs, and the second digital pre-distortion unit 104 is further configured to perform non-linear correction on the signal of the frequency to which the second single-frequency signal belongs. The signal generated by the first shared radio frequency channel contains non-linear components of multi-band signals, while the signals generated by the second radio frequency channel 113 and the third radio frequency channel 114 contain non-linear components of single-band signals. Therefore, in order to improve the quality of the final signal and the efficiency of the corresponding power amplifier, the corresponding digital pre-distortion unit needs to have the non-linear correction function for single-frequency signals and multi-frequency signals. Similarly, in some implementation manners, the radio frequency device further includes a fourth radio frequency channel 115. At this time, the third digital pre-distortion unit is further configured to perform non-linear correction on the signal of the frequency to which the third single-frequency signal belongs.

[0083] Please refer to Figures 2 to 6 , in an embodiment of the present application, the radio frequency device 100 further includes: a combiner 106 and an antenna 107. The combiner 106 includes a first input end and a second input end. The first input end of the combiner 106 is electrically connected to the output end of the first power amplifier 101, the second input end of the combiner 106 is electrically connected to the output end of the second power amplifier 102, and the output end of the combiner 106 is electrically connected to the antenna 107. The combiner 106 is configured to combine the signal obtained by the final stage amplification of the first single-frequency signal and the signal obtained by the final stage amplification of the second single-frequency signal into one signal, and then transmit it out uniformly via the antenna 107. In some implementation manners, the combiner 106 further includes a third input end, and the third input end of the combiner 106 is electrically connected to the output end of the third power amplifier 109.

[0084] In an embodiment of the present application, the frequency division unit 110 may also output single-frequency signals of other frequency bands, that is, the frequency division unit 110 may output at least three single-frequency signals. In some possible implementation manners, if a radio frequency channel is provided between the different-frequency splitter 112 and the power amplifier corresponding to a certain single-frequency signal, then the radio frequency channel is a radio frequency channel exclusively used by the single-frequency signal, and the power amplifier corresponding to the single-frequency signal is an exclusively used power amplifier. In a possible implementation manner, among the at least three single-frequency signals output by the frequency division unit 110, the frequencies of any two single-frequency signals are different. Therefore, the radio frequency device 100 includes at least three power amplifiers, and the at least three power amplifiers are used to amplify the at least three single-frequency signals in a one-to-one correspondence. The at least three power amplifiers may be sequentially named: the first power amplifier 101, the second power amplifier 102,..., the Nth power amplifier. N represents the number of power amplifiers. N is an integer greater than or equal to 3. The number of power amplifiers in the radio frequency device 100 is the same as the number of single-frequency signals output by the frequency division unit 110. For example, if the multi-band analog signal includes signals of N frequency bands, then the radio frequency device 100 may be configured with N digital pre-distortion units, one digital-to-analog converter 105, one frequency division unit 110, and N power amplifiers, and each power amplifier performs final amplification processing on a signal of a single frequency. Among them, the frequency division unit 110 may select whether to configure a corresponding single-frequency radio frequency channel according to actual requirements. The single-frequency radio frequency channel refers to a radio frequency channel exclusively used by a single-frequency signal. For example, the second radio frequency channel 113 and the third radio frequency channel 114 are both single-frequency radio frequency channels. The specific implementation manner of the radio frequency device 100 for N frequency band signals may be analogized based on the foregoing embodiments and will not be elaborated here.

[0085] Please refer to Figure 7, an embodiment of the present application further provides a radio frequency device 200, including: a first frequency division unit 210, a second frequency division unit 220, a first multi-input power amplifier 201, and a second multi-input power amplifier 202. Among them, the first frequency division unit 210 includes a first output terminal and a second output terminal. The first frequency division unit 210 is configured to receive a first initial multi-band analog signal, perform frequency division on the first initial multi-band analog signal, and output a first single-frequency signal through the first output terminal of the first frequency division unit 210, and output a second single-frequency signal through the second output terminal of the first frequency division unit 210. The frequency of the first single-frequency signal is different from the frequency of the second single-frequency signal. The second frequency division unit 220 includes a first output terminal and a second output terminal. The second frequency division unit 220 is configured to receive a second initial multi-band analog signal, perform frequency division on the second initial multi-band analog signal, and output a first single-frequency signal through the first output terminal of the second frequency division unit 220, and output a second single-frequency signal through the second output terminal of the second frequency division unit 220. The first multi-input power amplifier 201 includes a first input terminal and a second input terminal, and the first input terminal of the first multi-input power amplifier 201 is electrically connected to the first output terminal of the first frequency division unit 210. The second input terminal of the first multi-input power amplifier 201 is electrically connected to the first output terminal of the second frequency division unit 220. The first multi-input power amplifier 201 is configured to amplify at least two first single-frequency signals. The second multi-input power amplifier 202 includes a first input terminal and a second input terminal, and the first input terminal of the second multi-input power amplifier 202 is electrically connected to the second output terminal of the first frequency division unit 210. The second input terminal of the second multi-input power amplifier 202 is electrically connected to the second output terminal of the second frequency division unit 220. The second multi-input power amplifier 202 is configured to amplify at least two second single-frequency signals.

[0086] In this embodiment, the first frequency division unit 210 is configured to divide the first initial multi-band analog signal, and output at least two single-frequency signals. Among the at least two single-frequency signals output by the first frequency division unit 210, there are a first single-frequency signal and a second single-frequency signal. The second frequency division unit 220 is configured to divide the second initial multi-band analog signal, and output at least two single-frequency signals. Among the at least two single-frequency signals output by the second frequency division unit 220, there are a first single-frequency signal and a second single-frequency signal, and the frequencies of the first single-frequency signal and the second single-frequency signal are different. In some implementation manners, the first frequency division unit 210 and the second frequency division unit 220 can respectively use a frequency division device to perform frequency division processing on the received initial multi-band analog signal, so as to output at least two single-frequency signals. The first multi-input power amplifier 201 receives the first single-frequency signal from the first frequency division unit 210 and the first single-frequency signal from the second frequency division unit 220. The first multi-input power amplifier 201 is configured to perform final power amplification on at least two first single-frequency signals. The second multi-input power amplifier 202 is configured to perform final power amplification on at least two second single-frequency signals. The first multi-input power amplifier 201 and the second multi-input power amplifier 202 are multi-input power amplifiers. Compared with a single-input power amplifier, the multi-input power amplifier has good flexibility. Specifically, the multi-input power amplifier can flexibly control the switching states of different power transistors at different power levels, and the multi-input power amplifier can effectively utilize the load pulling principle between power transistors to improve the efficiency of the final power amplifier.

[0087] Figure 8 SCS (Signal Component Separation) shown in this and subsequent figures refers to the signal separation unit.

[0088] Please refer to Figure 8, in an embodiment of the present application, the first frequency division unit 210 includes: a first shared radio frequency channel 211 and a first different-frequency splitter 212. Among them, the input end of the first different-frequency splitter 212 is electrically connected to the output end of the first shared radio frequency channel 211. The first different-frequency splitter 212 includes a first output end and a second output end. The first output end of the first different-frequency splitter 212 is the first output end of the first frequency division unit 210, that is, the first output end of the first different-frequency splitter 212 is electrically connected to the first input end of the first multi-input power amplifier 201. The second output end of the first different-frequency splitter 212 is the second output end of the first frequency division unit 210, that is, the second output end of the first different-frequency splitter 212 is electrically connected to the first input end of the second multi-input power amplifier 202. After frequency-dividing the first initial multi-band analog signal, a first single-frequency signal is output through the first output end of the first frequency division unit 210, and a second single-frequency signal is output through the second output end of the first frequency division unit 210, including: The first shared radio frequency channel 211 is used to receive the first initial multi-band analog signal, perform amplification processing on the first initial multi-band analog signal, and output a first multi-band signal, and the first multi-band signal is an analog signal. The first different-frequency splitter 212 is used to perform frequency division processing on the first multi-band signal, output a first single-frequency signal through the first output end of the first different-frequency splitter 212, and output a second single-frequency signal through the second output end of the first different-frequency splitter 212.

[0089] In this embodiment, the frequency of the first single-frequency signal is named the first frequency, and the frequency of the second single-frequency signal is named the second frequency. The first shared radio frequency channel 211 is a radio frequency channel for the mixed analog signal of the first frequency and the second frequency, that is, the first shared radio frequency channel 211 can not only perform gain adjustment and step-by-step amplification on the signal of the first frequency in the multi-band analog signal, but also perform gain adjustment and step-by-step amplification on the signal of the second frequency to obtain a first multi-band signal. The function of the first different-frequency splitter 212 is to frequency-divide the first multi-band signal after the gain adjustment and step-by-step amplification processing by the first shared radio frequency channel 211, obtain at least two single-frequency signals, input the first single-frequency signal into the first multi-input power amplifier 201, and input the second single-frequency signal into the second multi-input power amplifier 202.

[0090] In this embodiment, the first different-frequency splitter 212 is arranged at the rear end of the first shared radio frequency channel 211 and is electrically connected to the multi-input power amplifier. Therefore, when the number of frequency bands of the radio frequency signal is increased, it can still be processed through the first shared radio frequency channel 211 and the first different-frequency splitter 212. That is, as the number of frequency bands of the radio frequency signal increases, the cost and area of the radio frequency channel will not increase.

[0091] Please refer to Figure 8, in an embodiment of the present application, the second frequency division unit 220 includes: a second shared radio frequency channel 221 and a second different-frequency splitter 222. Among them, the input end of the second different-frequency splitter 222 is electrically connected to the output end of the second shared radio frequency channel 221, and the second different-frequency splitter 222 includes a first output end and a second output end. The first output end of the second different-frequency splitter 222 is the first output end of the second frequency division unit 220, that is, the first output end of the second different-frequency splitter 222 is electrically connected to the second input end of the first multi-input power amplifier 201. The second output end of the second different-frequency splitter 222 is the second output end of the second frequency division unit 220, that is, the second output end of the second different-frequency splitter 222 is electrically connected to the second output end of the second multi-input power amplifier 202. After the second initial multi-band analog signal is frequency-divided, the first single-frequency signal is output through the first output end of the second frequency division unit 220, and the second single-frequency signal is output through the second output end of the second frequency division unit 220, including: the second shared radio frequency channel 221 is used to receive the second initial multi-band analog signal, and perform amplification processing on the second initial multi-band analog signal, and output a second multi-band signal, and the second multi-band signal is an analog signal. The second different-frequency splitter 222 is used to perform frequency division processing on the second multi-band signal, output the first single-frequency signal through the first output end of the second different-frequency splitter 222, and output the second single-frequency signal through the second output end of the second different-frequency splitter 222.

[0092] In this embodiment, the second shared radio frequency channel 221 is a radio frequency channel for multi-band mixed analog signals, that is, the second shared radio frequency channel 221 can not only perform gain adjustment and step-by-step amplification on the signal of the frequency to which the first single-frequency signal in the multi-band analog signal belongs, but also perform gain adjustment and step-by-step amplification on the signal of the frequency to which the second single-frequency signal belongs, to obtain a second multi-band signal. The function of the second different-frequency splitter 222 is to frequency-divide the second multi-band signal after the gain adjustment and step-by-step amplification processing by the second shared radio frequency channel 221, input the obtained first single-frequency signal into the first multi-input power amplifier 201, and input the second single-frequency signal into the second multi-input power amplifier 202.

[0093] In this embodiment, the second different-frequency splitter 222 is arranged at the rear end of the second shared radio frequency channel 221 and is electrically connected to the multi-input power amplifier. Therefore, when the number of frequency bands of the radio frequency signal is increased, it can still be processed by the second shared radio frequency channel 221 and the second different-frequency splitter 222. That is, as the number of frequency bands of the radio frequency signal increases, the cost and area of the radio frequency channel will not increase.

[0094] Please refer to Figure 9, in an embodiment of the present application, the first frequency division unit 210 includes: a first different-frequency splitter 212, a first single-frequency radio frequency channel 213, and a second single-frequency radio frequency channel 214. The first different-frequency splitter 212 includes a first output terminal and a second output terminal. The input terminal of the first single-frequency radio frequency channel 213 is electrically connected to the first output terminal of the first different-frequency splitter 212. The input terminal of the second single-frequency radio frequency channel 214 is electrically connected to the second output terminal of the first different-frequency splitter 212. The output terminal of the first single-frequency radio frequency channel 213 is the first output terminal of the first frequency division unit 210, that is, the output terminal of the first single-frequency radio frequency channel 213 is electrically connected to the first input terminal of the first multi-input power amplifier 201. The output terminal of the second single-frequency radio frequency channel 214 is the second output terminal of the first frequency division unit 210, that is, the output terminal of the second single-frequency radio frequency channel 214 is electrically connected to the first input terminal of the second multi-input power amplifier 202. After the first frequency division unit 210 divides the first initial multi-band analog signal, it outputs a first single-frequency signal through the first output terminal of the first frequency division unit 210, and outputs a second single-frequency signal through the second output terminal of the first frequency division unit 210, including: the first different-frequency splitter 212 is used to receive the first initial multi-band analog signal, divide the first initial multi-band analog signal, output at least two initial single-frequency signals, and output the first initial single-frequency signal through the first output terminal of the first different-frequency splitter 212. The second initial single-frequency signal is output through the second output terminal of the first different-frequency splitter 212. The first single-frequency radio frequency channel 213 is used to amplify the first initial single-frequency signal and output the first single-frequency signal through the output terminal. The second single-frequency radio frequency channel 214 is used to amplify the second initial single-frequency signal and output the second single-frequency signal through the output terminal.

[0095] In this embodiment, the first different-frequency splitter 212 separates the received first initial multi-band analog signal into at least two single-frequency signals, and the at least two single-frequency signals include a first initial single-frequency signal and a second initial single-frequency signal. The first initial single-frequency signal undergoes gain adjustment and step-by-step amplification through the first single-frequency radio frequency channel 213, and then undergoes final amplification through the first multi-input power amplifier 201. The second initial single-frequency signal undergoes gain adjustment and step-by-step amplification through the second single-frequency radio frequency channel 214, and then undergoes final amplification through the second multi-input power amplifier 202.

[0096] In this embodiment, the first single-frequency signal generated by the first different-frequency splitter 212 uses the first single-frequency radio frequency channel 213 alone. The second single-frequency signal generated by the first different-frequency splitter 212 uses the second single-frequency radio frequency channel 214 alone. The first single-frequency signal and the second single-frequency signal are independently subjected to gain adjustment and step-by-step amplification, which can ensure the efficiency of the first multi-input power amplifier 201 and the second multi-input power amplifier 202 and the final signal quality.

[0097] Please refer toFigure 9 In an embodiment of the present application, the second frequency division unit 220 includes: a second different-frequency splitter 222, a third single-frequency RF channel 223, and a fourth single-frequency RF channel 224. The second different-frequency splitter 222 includes a first output terminal and a second output terminal. The input terminal of the third single-frequency RF channel 223 is electrically connected to the first output terminal of the second different-frequency splitter 222. The input terminal of the fourth single-frequency RF channel 224 is electrically connected to the second output terminal of the second different-frequency splitter 222. The output terminal of the third single-frequency RF channel 223 is the first output terminal of the second frequency division unit 220, that is, the output terminal of the third single-frequency RF channel 223 is electrically connected to the second input terminal of the first multi-input power amplifier 201. The output terminal of the fourth single-frequency RF channel 224 is the second output terminal of the second frequency division unit 220, that is, the output terminal of the fourth single-frequency RF channel 224 is electrically connected to the second input terminal of the second multi-input power amplifier 202. After the second frequency division unit 220 divides the second initial multi-band analog signal, it outputs a first single-frequency signal through the first output terminal of the second frequency division unit 220, and outputs a second single-frequency signal through the second output terminal of the second frequency division unit 220, including: the second different-frequency splitter 222 is configured to receive the second initial multi-band analog signal, divide the second initial multi-band analog signal, and output at least two initial single-frequency signals, and output a first initial single-frequency signal through the first output terminal of the second different-frequency splitter 222. Output a second initial single-frequency signal through the second output terminal of the second different-frequency splitter 222. The third single-frequency RF channel 223 is configured to perform amplification processing on the first initial single-frequency signal, and output a first single-frequency signal through the output terminal of the third single-frequency RF channel 223. The fourth single-frequency RF channel 224 is configured to perform amplification processing on the second initial single-frequency signal, and output a second single-frequency signal through the output terminal of the fourth single-frequency RF channel 224.

[0098] In this embodiment, the second different-frequency splitter 222 separates the received second initial multi-band analog signal into at least two single-frequency signals, and the at least two single-frequency signals include a first initial single-frequency signal and a second initial single-frequency signal. The first initial single-frequency signal is subjected to gain adjustment and step-by-step amplification through the third single-frequency RF channel 223, and then is subjected to final-stage amplification through the first multi-input power amplifier 201. The second initial single-frequency signal is subjected to gain adjustment and step-by-step amplification through the fourth single-frequency RF channel 224, and then is subjected to final-stage amplification through the second multi-input power amplifier 202.

[0099] In this embodiment, the first single-frequency signal uses the third single-frequency RF channel 223 alone. The second single-frequency signal uses the fourth single-frequency RF channel 224 alone. The first single-frequency signal and the second single-frequency signal perform gain adjustment and step-by-step amplification alone, which can ensure the efficiency of the first multi-input power amplifier 201 and the second multi-input power amplifier 202 and the final signal quality.

[0100] Please refer to Figure 10 In an embodiment of the present application, the first frequency division unit 210 includes: a first shared radio frequency channel 211, a first different-frequency splitter 212, a first single-frequency radio frequency channel 213, and a second single-frequency radio frequency channel 214. Among them, the input end of the first different-frequency splitter 212 is electrically connected to the output end of the first shared radio frequency channel 211. The first different-frequency splitter 212 includes a first output end and a second output end. The input end of the first single-frequency radio frequency channel 213 is electrically connected to the first output end of the first different-frequency splitter 212. The input end of the second single-frequency radio frequency channel 214 is electrically connected to the second output end of the first different-frequency splitter 212. The output end of the first single-frequency radio frequency channel 213 is the first output end of the first frequency division unit 210. That is, the first input end of the first multi-input power amplifier 201 is electrically connected to the output end of the first single-frequency radio frequency channel 213. The output end of the second single-frequency radio frequency channel 214 is the second output end of the first frequency division unit 210. That is, the first input end of the second multi-input power amplifier 202 is electrically connected to the output end of the second single-frequency radio frequency channel 214. After the first initial multi-band analog signal is frequency-divided, a first single-frequency signal is output through the first output end of the first frequency division unit 210, and a second single-frequency signal is output through the second output end of the first frequency division unit 210, including: The first shared radio frequency channel 211 is used to receive the first initial multi-band analog signal, and perform amplification processing on the first initial multi-band analog signal, and output a first multi-band signal, and the first multi-band signal is an analog signal. The first different-frequency splitter 212 is used to perform frequency division processing on the first multi-band signal, and output a first initial single-frequency signal through the first output end of the first different-frequency splitter 212. A second initial single-frequency signal is output through the second output end of the first different-frequency splitter 212. The first single-frequency radio frequency channel 213 is used to perform amplification processing on the first initial single-frequency signal, and output a first single-frequency signal through the output end of the first single-frequency radio frequency channel 213. The second single-frequency radio frequency channel 214 is used to perform amplification processing on the second initial single-frequency signal, and output a second single-frequency signal through the output end of the second single-frequency radio frequency channel 214.

[0101] In the embodiment of the present application, the first shared radio frequency channel 211 is a radio frequency channel shared by multi-band analog signals. That is, the first shared radio frequency channel 211 can not only perform gain adjustment and step-by-step amplification on the signal of the frequency to which the first single-frequency signal in the multi-band analog signal belongs, but also perform gain adjustment and step-by-step amplification on the signal of the frequency to which the second single-frequency signal in the multi-band analog signal belongs. The first different-frequency splitter 212 separates the first multi-band signal into at least two single-frequency signals, and the at least two single-frequency signals include a first initial single-frequency signal and a second initial single-frequency signal. The first initial single-frequency signal obtained by the first different-frequency splitter 212 is subjected to gain adjustment and step-by-step amplification through the first single-frequency radio frequency channel 213, and then undergoes final-stage amplification through the first multi-input power amplifier 201. The second initial single-frequency signal obtained by the first different-frequency splitter 212 is subjected to gain adjustment and step-by-step amplification through the second single-frequency radio frequency channel 214, and then undergoes final-stage amplification through the second multi-input power amplifier 202.

[0102] In the embodiment of the present application, the first shared radio frequency channel 211 is a radio frequency channel shared by multi-band analog signals. When increasing the number of frequency bands of radio frequency signals, the radio frequency channel before the signal enters the first different-frequency splitter 212 does not need to be increased. Therefore, the cost and area of the radio frequency channel before the signal enters the first different-frequency splitter 212 can be not increased. The first single-frequency radio frequency channel 213 is a radio frequency channel exclusively used by the first single-frequency signal and is used to perform gain adjustment and step-by-step amplification on the first single-frequency signal. The second single-frequency radio frequency channel 214 is a radio frequency channel exclusively used by the second single-frequency signal and is used to perform gain adjustment and step-by-step amplification on the second single-frequency signal. The first single-frequency radio frequency channel 213 and the second single-frequency radio frequency channel 214 are single-frequency signal exclusive channels, and the single-frequency radio frequency channel can ensure the step-by-step amplification effect of the single-frequency signal and improve the efficiency of the corresponding power amplifier.

[0103] Please refer to Figure 10, in an embodiment of the present application, the second frequency division unit 220 includes: a second shared radio frequency channel 221, a second different-frequency splitter 222, a third single-frequency radio frequency channel 223, and a fourth single-frequency radio frequency channel 224. Among them, the input end of the second different-frequency splitter 222 is electrically connected to the output end of the second shared radio frequency channel 221. The second different-frequency splitter 222 includes a first output end and a second output end. The input end of the third single-frequency radio frequency channel 223 is electrically connected to the first output end of the second different-frequency splitter 222. The input end of the fourth single-frequency radio frequency channel 224 is electrically connected to the second output end of the second different-frequency splitter 222. The output end of the third single-frequency radio frequency channel 223 is the first output end of the second frequency division unit 220, that is, the second input end of the first multi-input power amplifier 201 is electrically connected to the output end of the third single-frequency radio frequency channel 223. The output end of the fourth single-frequency radio frequency channel 224 is the second output end of the second frequency division unit 220, that is, the second input end of the second multi-input power amplifier 202 is electrically connected to the output end of the fourth single-frequency radio frequency channel 224. After the second initial multi-band analog signal is frequency-divided, the first single-frequency signal is output through the first output end of the second frequency division unit 220, and the second single-frequency signal is output through the second output end of the second frequency division unit 220, including: the second shared radio frequency channel 221 is used to receive the second initial multi-band analog signal and perform amplification processing on the second initial multi-band analog signal, and output a second multi-band signal, and the second multi-band signal is an analog signal. The second different-frequency splitter 222 is used to perform frequency-division processing on the second multi-band signal, and the first output end of the second different-frequency splitter 222 is used to output a first initial single-frequency signal, and the second output end of the second different-frequency splitter 222 outputs a second initial single-frequency signal. The third single-frequency radio frequency channel 223 is used to perform amplification processing on the first initial single-frequency signal, and the first single-frequency signal is output through the output end of the third single-frequency radio frequency channel 223. The fourth single-frequency radio frequency channel 224 is used to perform amplification processing on the second initial single-frequency signal, and the second single-frequency signal is output through the output end of the fourth single-frequency radio frequency channel 224.

[0104] In this embodiment, the second shared radio frequency channel 221 is a radio frequency channel shared by multi-band analog signals. That is, the second shared radio frequency channel 221 can not only perform gain adjustment and step-by-step amplification on the signal of the frequency to which the first single-frequency signal in the multi-band analog signal belongs, but also perform gain adjustment and step-by-step amplification on the signal of the frequency to which the second single-frequency signal in the multi-band analog signal belongs. The second different-frequency splitter 222 separates the first multi-band signal into at least two single-frequency signals, and the at least two single-frequency signals include a first initial single-frequency signal and a second initial single-frequency signal. The first initial single-frequency signal obtained by the second different-frequency splitter 222 is subjected to gain adjustment and step-by-step amplification through the third single-frequency radio frequency channel, and then is subjected to final stage amplification through the first multi-input power amplifier 201. The second initial single-frequency signal obtained by the second different-frequency splitter 222 is subjected to gain adjustment and step-by-step amplification through the fourth single-frequency radio frequency channel, and then is subjected to final stage amplification through the second multi-input power amplifier 202.

[0105] In this embodiment, the second shared radio frequency channel 221 is a radio frequency channel shared by multi-band analog signals. When the number of frequency bands of the radio frequency signal is increased, the radio frequency channel before the signal enters the second different-frequency splitter 222 does not need to be increased. Therefore, the cost and area of the radio frequency channel before the signal enters the second different-frequency splitter 222 can be not increased. The third single-frequency radio frequency channel 223 is a radio frequency channel exclusively used by the first single-frequency signal, and is used to perform gain adjustment and step-by-step amplification on the first single-frequency signal. The fourth single-frequency radio frequency channel 224 is a radio frequency channel exclusively used by the second single-frequency signal, and is used to perform gain adjustment and step-by-step amplification on the second single-frequency signal. The third single-frequency radio frequency channel 223 and the fourth single-frequency radio frequency channel 224 are exclusive channels for single-frequency signals, and the single-frequency radio frequency channel can ensure the step-by-step amplification effect of the single-frequency signal and improve the efficiency of the corresponding power amplifier.

[0106] In an embodiment of the present application, the first initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least two first multi-band digital signals. The second initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least two first multi-band digital signals.

[0107] Please refer to Figures 8 to 10, in an embodiment of the present application, the radio frequency device 200 further includes: a first digital predistortion unit 231, a first signal separation unit 241, a second digital predistortion unit 232, a second signal separation unit 242, a first digital-to-analog converter 251, and a second digital-to-analog converter 252. Among them, the first digital predistortion unit 231 is configured to receive an initial multi-band digital signal, perform multi-band non-linear correction on the initial multi-band digital signal, and output a first digital signal, where the first digital signal is a multi-band digital signal. The input end of the first signal separation unit 241 is electrically connected to the output end of the first digital predistortion unit 231. The first signal separation unit 241 includes a first output end and a second output end. The first signal separation unit 241 is configured to separate the first digital signal, output a first multi-band digital signal through the first output end of the first signal separation unit 241, and output a second multi-band digital signal through the second output end of the first signal separation unit 241. The second digital predistortion unit 232 is configured to receive an initial multi-band digital signal, perform multi-band non-linear correction on the initial multi-band digital signal, and output a second digital signal, where the second digital signal is a multi-band digital signal. The input end of the second signal separation unit 242 is electrically connected to the output end of the second digital predistortion unit 232. The second signal separation unit 242 includes a first output end and a second output end. The second signal separation unit 242 is configured to separate the second digital signal, output a first multi-band digital signal through the first output end of the second signal separation unit 242, and output a second multi-band digital signal through the second output end of the second signal separation unit 242. The first digital-to-analog converter 251 includes a first input end and a second input end. The first input end of the first digital-to-analog converter 251 is electrically connected to the first output end of the first signal separation unit 241. The second input end of the first digital-to-analog converter 251 is electrically connected to the first output end of the second signal separation unit 242. The first digital-to-analog converter 251 is configured to perform digital-to-analog conversion on at least two first multi-band digital signals into a first initial multi-band analog signal. The second digital-to-analog converter 252 includes a first input end and a second input end. The first input end of the second digital-to-analog converter 252 is electrically connected to the second output end of the first signal separation unit 241. The second input end of the second digital-to-analog converter 252 is electrically connected to the second output end of the second signal separation unit 242. The second digital-to-analog converter 252 is configured to perform digital-to-analog conversion on at least two second multi-band digital signals into a second initial multi-band analog signal.

[0108] In this embodiment, since the final signal contains multi-band non-linear components, the first digital pre-distortion unit 231 and the second digital pre-distortion unit 232 respectively perform multi-band non-linear correction on the initial multi-band digital signal, so that the final signal is located in the linear amplification region. The first signal separation unit 241 and the second signal separation unit 242 are used to separate the signal. The first signal separation unit 241 and the second signal separation unit 242 decompose the input signal according to the characteristics of the final power amplifier, so as to control the load pulling characteristics of the final power amplifier. The number of output signals after the first signal separation unit 241 and the second signal separation unit 242 decompose the signal is at least two. The first digital-to-analog converter 251 and the second digital-to-analog converter 252 are respectively used to perform digital-to-analog conversion on the received digital signal to obtain the initial analog signal for the first frequency division unit 210 and the second frequency division unit 220 to perform frequency division.

[0109] Please refer to Figure 11 , in an embodiment of the present application, the radio frequency device 200 further includes: a third frequency division unit 260. The third frequency division unit 260 includes a first output end and a second output end. The third frequency division unit 260 is used to receive the third initial multi-band analog signal, perform frequency division on the third initial multi-band analog signal, and output the first single-frequency signal through the first output end of the third frequency division unit 260, and output the second single-frequency signal through the second output end of the third frequency division unit 260. The third input end of the first multi-input power amplifier 201 is electrically connected to the first output end in the third frequency division unit 260. The first multi-input power amplifier 201 is used to amplify at least three first single-frequency signals. The third input end of the second multi-input power amplifier 202 is electrically connected to the second output end in the third frequency division unit 260. The second multi-input power amplifier 202 is used to amplify at least three second single-frequency signals.

[0110] In this embodiment, the first multi-input power amplifier 201 and the second multi-input power amplifier 202 are at least three-input power amplifiers. As the number of input signal paths of the power amplifier increases, each path of signal is pre-amplified by the corresponding radio frequency channel. Therefore, the efficiency of the power amplifier corresponding to each path of single-frequency signal will be improved.

[0111] In one implementation manner of this embodiment, the structure of the third frequency division unit 260 may refer to the structure of the first frequency division unit 210 or the second frequency division unit 220. Details are not described herein.

[0112] Based on the above embodiments, it can be known that the number of digital-to-analog converters is the same as the number of paths of the input signals of the final-stage power amplifier, and the numbers of the digital predistortion units and the signal separation units are respectively the same as the number of frequency bands of the radio frequency signals. For example, in a dual-band three-input transmission system, two digital predistortion units, two signal separation units, three digital-to-analog converters, three frequency division units, and two power amplifiers need to be configured. In a triple-band two-input transmission system, three digital predistortion units, three signal separation units, two digital-to-analog converters, two frequency division units, and three power amplifiers need to be configured. Therefore, as the number of frequency bands of the radio frequency signals increases, in the same input transmission system, compared with the existing transmission system, the transmission circuit provided by the present application requires fewer digital-to-analog conversion units and can also have fewer radio frequency channels. Therefore, the cost is lower.

[0113] In an embodiment of the present application, the third initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least two third multi-band digital signals.

[0114] Please refer to Figure 11 , in an embodiment of the present application, the first signal separation unit 241 further includes a third output terminal, and the third output terminal of the first signal separation unit 241 outputs a third multi-band digital signal. The second signal separation unit 242 further includes a third output terminal, and the third output terminal of the second signal separation unit 242 outputs a third multi-band digital signal. The radio frequency device 200 further includes: a third digital-to-analog converter 253 and a third frequency division unit 260. The third digital-to-analog converter 253 includes a first input terminal and a second input terminal. The first input terminal of the third digital-to-analog converter 253 is electrically connected to the third output terminal of the first signal separator, and the second input terminal of the third digital-to-analog converter 253 is electrically connected to the third output terminal of the second signal separator. The third digital-to-analog converter is configured to perform digital-to-analog conversion on at least two third multi-band digital signals to obtain a third initial multi-band analog signal. The third frequency division unit 260, the input terminal of the third frequency division unit 260 is electrically connected to the output terminal of the third digital-to-analog conversion. The third frequency division unit 260 includes a first output terminal and a second output terminal. The third frequency division unit 260 is configured to receive the third initial multi-band analog signal, perform frequency division on the third initial multi-band analog signal, and output a first single-frequency signal through the first output terminal of the third frequency division unit 260, and output a second single-frequency signal through the second output terminal of the third frequency division unit 260. The third input terminal of the first multi-input power amplifier 201 is electrically connected to the first output terminal in the third frequency division unit 260. The first multi-input power amplifier 201 is configured to perform amplification processing on at least three first single-frequency signals. The third input terminal of the second multi-input power amplifier 202 is electrically connected to the second output terminal in the third frequency division unit 260. The second multi-input power amplifier 202 is configured to perform amplification processing on at least three second single-frequency signals.

[0115] In this embodiment, the first signal separation unit 241 and the second signal separation unit 242 respectively separate the received signal into at least three paths, and then the third path is subjected to digital-to-analog conversion by the third digital-to-analog converter 253 and then transmitted to the third frequency division unit 260. The third frequency division unit 260 further separates the received signal into a first single-frequency signal and a second single-frequency signal, and then performs final amplification via the first multi-input power amplifier 201 and the second multi-input power amplifier 202 respectively.

[0116] In this embodiment, the first multi-input power amplifier 201 and the second multi-input power amplifier 202 are at least three-input power amplifiers. As the number of input signal paths of the power amplifier increases, each path of the signal is pre-amplified through the corresponding radio frequency channel. Therefore, the efficiency of the power amplifier corresponding to each path of the single-frequency signal will be improved.

[0117] In one implementation manner of this embodiment, the structure of the third frequency division unit 260 may refer to the structure of the first frequency division unit 210 or the second frequency division unit 220. For example, please refer to Figure 11 , the third frequency division band unit 260 includes: a third shared radio frequency channel 261, a third different-frequency splitter 262, a fifth single-frequency radio frequency channel 263, and a sixth single-frequency radio frequency channel 264. The output end of the third digital-to-analog converter 253 is electrically connected to the input end of the third shared radio frequency channel 261, the output end of the third shared radio frequency channel 261 is electrically connected to the third different-frequency splitter 262, the first output end of the third different-frequency splitter 262 is electrically connected to the input end of the fifth single-frequency radio frequency channel 263, and the output end of the fifth single-frequency radio frequency channel 263 is electrically connected to the third input end of the first multi-input power amplifier 201. The second output end of the third different-frequency splitter 262 is electrically connected to the input end of the sixth single-frequency radio frequency channel 264, and the output end of the sixth single-frequency radio frequency channel 264 is electrically connected to the third input end of the second multi-input power amplifier 202.

[0118] Please refer to Figure 12 and Figure 13, in an embodiment of the present application, the first initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least three first multi-band digital signals. The first frequency division unit 210 further includes a third output terminal. After the first frequency division unit 210 performs frequency division on the first initial multi-band analog signal, it also outputs a third single-frequency signal through the third output terminal of the first frequency division unit 210. The frequency of the third single-frequency signal, the frequency of the first single-frequency signal, and the frequency of the second single-frequency signal are different from each other. The second initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least three second multi-band digital signals. The second frequency division unit 220 further includes a third output terminal. After the second frequency division unit 220 performs frequency division on the second initial multi-band analog signal, it also outputs a third single-frequency signal through the third output terminal of the second frequency division unit 220. The radio frequency device 200 further includes: a third multi-input power amplifier 203. The third multi-input power amplifier 203 includes a first input terminal and a second input terminal. The first input terminal of the third multi-input power amplifier 203 is electrically connected to the third output terminal in the first frequency division unit 210. The second input terminal of the third multi-input power amplifier 203 is electrically connected to the third output terminal in the second frequency division unit 220. The third multi-input power amplifier 203 is configured to perform amplification processing on at least two third single-frequency signals.

[0119] In this embodiment, the multi-band analog signal includes signals of at least three frequency bands. The first frequency division unit 210 outputs at least three single-frequency signals, and the second frequency division unit 220 outputs at least three single-frequency signals. The third multi-input power amplifier 203 is configured to perform amplification processing on at least two third single-frequency signals.

[0120] The first frequency division unit 210 in this embodiment can be implemented with reference to the foregoing embodiments. Please refer to Figure 13 , in a possible implementation manner, the first frequency division unit 210 further includes a fifth single-frequency radio frequency channel 215. The third output terminal of the first different-frequency splitter 212 outputs a third initial single-frequency signal, and the output terminal of the fifth single-frequency signal is electrically connected to the first input terminal of the third multi-input power amplifier 203. The fifth single-frequency radio frequency channel 215 is configured to perform gain adjustment and stage-by-stage amplification on the third initial single-frequency signal, and output a third single-frequency signal through the output terminal of the fifth single-frequency radio frequency channel 215. The third single-frequency signal is subjected to final-stage amplification processing by the third multi-input power amplifier 203.

[0121] In this embodiment, the fifth single-frequency radio frequency channel 215 is a radio frequency channel dedicated to the third initial single-frequency signal, and performs gain adjustment and stage-by-stage amplification processing on the third initial single-frequency signal. Therefore, the fifth single-frequency radio frequency channel 215 can improve the signal quality of the third single-frequency signal and improve the efficiency of the third multi-input power amplifier 203.

[0122] Please refer to Figure 12 and Figure 13, in a possible implementation, the radio frequency device 200 includes: a third digital predistortion unit 233 and a third signal separation unit 243. The first output terminal of the third digital predistortion unit 233 is connected to the third input terminal of the first signal separation unit 241; the second output terminal of the third digital predistortion unit 233 is connected to the third input terminal of the second signal separation unit 242; the third output terminal of the third digital predistortion unit 233 is electrically connected to the third input terminal of the third signal separation unit 243. The third output terminal of the first digital predistortion unit 231 is electrically connected to the first input terminal of the third signal separation unit 243. The third output terminal of the second digital predistortion unit 232 is electrically connected to the second input terminal of the third signal separation unit 243. The third output terminal of the first heterodyne splitter 212 is electrically connected to the fifth single-frequency radio frequency channel 215, and the output terminal of the fifth single-frequency radio frequency channel 215 is electrically connected to the first input terminal of the third multi-input power amplifier 203. The third output terminal of the second heterodyne splitter is electrically connected to the input terminal of the sixth single-frequency radio frequency channel 225, and the output terminal of the sixth single-frequency radio frequency channel 225 is electrically connected to the second input terminal of the third multi-input power amplifier 203.

[0123] The second frequency division unit 220 in this embodiment can be implemented with reference to the foregoing embodiment. Please refer to Figure 13 , in a possible implementation, the second frequency division unit 220 further includes: a sixth single-frequency radio frequency channel. The third output terminal of the second heterodyne splitter 222 outputs a third initial single-frequency signal, and the output terminal of the sixth single-frequency signal is electrically connected to the second input terminal of the third multi-input power amplifier 203. The sixth single-frequency radio frequency channel is used to perform gain adjustment and step-by-step amplification on the third initial single-frequency signal, and output a third single-frequency signal through the output terminal of the sixth single-frequency radio frequency channel. The sixth single-frequency signal is subjected to final-stage amplification processing by the third multi-input power amplifier 203.

[0124] In this embodiment, the sixth single-frequency radio frequency channel is a radio frequency channel used exclusively for the third initial single-frequency signal, and performs gain adjustment and step-by-step amplification processing on the third initial single-frequency signal. Therefore, the sixth single-frequency radio frequency channel can improve the signal quality of the third single-frequency signal and improve the efficiency of the third multi-input power amplifier 203.

[0125] In an embodiment of the present application, the first initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least three first multi-band digital signals. The first frequency division unit 210 further includes a third output terminal, and the third output terminal of the first frequency division unit 210 is used to output a third single-frequency signal, and the frequencies of the third single-frequency signal, the first single-frequency signal, and the second single-frequency signal are different from each other. The second initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least three second multi-band digital signals. The second frequency division unit 220 further includes a third output terminal, and the third output terminal of the second frequency division unit 220 is used to output a third single-frequency signal. The radio frequency device 200 further includes: a third digital pre-distortion unit 233, a third signal separation unit 243, and a third multi-input power amplifier 203. The third digital pre-distortion unit 233 is configured to receive the initial multi-band digital signal and perform multi-band non-linear correction on the initial multi-band digital signal, and output a third digital signal, where the third digital signal is a multi-band digital signal. The input terminal of the third signal separation unit 243 is electrically connected to the output terminal of the third digital pre-distortion unit. The third signal separation unit 243 includes a first output terminal and a second output terminal. The third signal separation unit 243 is configured to separate the third digital signal, output a first multi-band digital signal through the first output terminal of the third signal separation unit, and output a second multi-band digital signal through the second output terminal of the third signal separation unit. The first digital-to-analog converter 251 further includes a third input terminal, and the first output terminal of the third signal separation unit 243 is electrically connected to the third input terminal of the first digital-to-analog converter 251. The first digital-to-analog converter 251 is configured to perform digital-to-analog conversion on at least three first multi-band digital signals to obtain a first initial multi-band analog signal. The second digital-to-analog converter 252 further includes a third input terminal, and the second output terminal of the third signal separation unit 243 is electrically connected to the third input terminal of the second digital-to-analog converter 252. The second digital-to-analog converter 252 is configured to perform digital-to-analog conversion on at least three second multi-band digital signals to obtain a second output multi-band analog signal. The third multi-input power amplifier 203, the first input terminal of the third multi-input power amplifier 203 is electrically connected to the third output terminal in the first frequency division unit 210. The second input terminal of the third multi-input power amplifier 203 is electrically connected to the third output terminal in the second frequency division unit 220. The third multi-input power amplifier 203 is configured to perform amplification processing on at least two third single-frequency signals.

[0126] In this embodiment, the initial multi-band analog signal includes at least three single-frequency signals. Among them, the at least three single-frequency signals include a first single-frequency signal, a second single-frequency signal, and a third single-frequency signal with different frequencies from each other. And the first single-frequency signal, the second single-frequency signal, and the third single-frequency signal are respectively amplified through power amplifiers used independently. Therefore, in order to ensure that the final signal operates in the linear amplification region, three digital pre-distortion units and three signal separation units need to be configured before digital-to-analog conversion.

[0127] It can be learned from this embodiment that when the number of frequency bands of the radio frequency signal is greater than 2, if the power amplifier is still a dual-input power amplifier, the number of digital-to-analog converters will not increase with the increase in the number of frequency bands, nor will the number of shared radio frequency channels increase accordingly.

[0128] It should be noted that the first frequency division unit 210 and the second frequency division unit 220 in this application can be any one of the foregoing embodiments. For the radio frequency device 200, those skilled in the art can select appropriate first frequency division unit 210 and second frequency division unit 220 according to actual needs to achieve the technical purpose.

[0129] In an embodiment of this application, the radio frequency device 200 further includes a combiner 204 and an antenna 205. The first input end of the combiner 204 is electrically connected to the output end of the first multi-input power amplifier 201, the second input end of the combiner 204 is electrically connected to the output end of the second multi-input power amplifier 202, and the output end of the combiner 204 is electrically connected to the antenna 205. The combiner 204 is used to combine the signal after the final stage amplification processing of the first single-frequency signal and the signal after the final stage amplification processing of the second single-frequency signal into one signal, and then transmit it uniformly through the antenna 205. In some implementation manners, the radio frequency device 200 includes a third multi-input power amplifier 203. At this time, the combiner 204 further includes a third input end, and the third input end of the combiner 204 is electrically connected to the output end of the third multi-input power amplifier 203.

[0130] In this application, since the multi-input transmission system has requirements for the relative gain and delay between multiple radio frequency channels, certain requirements are needed for the relative gain and delay of the different-frequency splitters on multiple radio frequency channels. In some possible implementation manners, the gain difference of the different-frequency splitters on adjacent radio frequency channels is less than 1 dB, the delay difference is less than 0.5 DPD samples, and the change trends with time, temperature, etc. are the same.

[0131] In an implementation manner of the embodiment of this application, the radio frequency channel may include: VGA (Variable Gain Amplifier), pre-stage drive amplifier, and pre-drive amplifier. The radio frequency channel is used to realize the gain adjustment and step-by-step amplification of multi-band analog signals in the analog link. The radio frequency channel includes a shared radio frequency channel and a single-frequency radio frequency channel. Among them, the shared radio frequency channel includes a first shared radio frequency channel 211, a second shared radio frequency channel 221, etc., and the single-frequency radio frequency channel includes a first single-frequency radio frequency channel 213, a second single-frequency radio frequency channel 214, a third single-frequency radio frequency channel 223, a fourth single-frequency radio frequency channel 224, a fifth single-frequency radio frequency channel, a sixth single-frequency radio frequency channel, etc.

[0132] In a possible implementation, the heterodyne splitter may include a microstrip line, a SAW filter, a dielectric filter, etc. The function of the heterodyne splitter is to perform frequency-domain filtering on a broadband multi-band, so as to separate signals of different frequency bands. The purpose of the heterodyne splitter is to achieve the signal filtering function, so there are certain requirements for the suppression ratio, usually more than 20 dB. The heterodyne splitter may be the first heterodyne splitter 212, the second heterodyne splitter 222, the third heterodyne splitter 262, etc. In a possible implementation, as Figure 14 shown, the heterodyne splitter is a heterodyne splitter implemented based on a microstrip line, or as Figure 15 shown, the heterodyne splitter is a heterodyne splitter implemented based on a dielectric filter. From Figures 14 to 15 it can be obtained that: The heterodyne splitter implemented by any method can meet the requirements of the suppression ratio index.

[0133] In this application, the number of frequency bands of the radio frequency signal and the number of inputs of the multi-input power amplifier proposed in the foregoing embodiments are only illustrative and not a limitation to this application.

[0134] In other embodiments of this application, the radio frequency device 200 may be an N-band m-input transmission system. At this time, the radio frequency device 200 includes: N digital predistortion units, N signal separation units, m digital-to-analog converters, m shared radio frequency channels, mN single-frequency radio frequency channels, and N m-input power amplifiers. The specific connection relationship and functions can be analogized with reference to the foregoing embodiments and will not be elaborated here. Among them, m and N are integers greater than or equal to 2 respectively.

[0135] This application also provides a device, and the device includes the radio frequency device provided in any of the foregoing embodiments. The device may be a mobile terminal device, such as a mobile phone, a personal digital assistant, a smart wearable product. The device may also be a communication terminal device, such as a server, other devices with communication functions, etc. The device may also be a base station.

Claims

1. A radio frequency device, characterized in that, it includes a frequency division unit, a first power amplifier, and a second power amplifier: The frequency division unit includes a first output terminal and a second output terminal; the frequency division unit is used to receive an initial multi-band analog signal, perform frequency division on the initial multi-band analog signal, and output a first single-frequency signal through the first output terminal, and output a second single-frequency signal through the second output terminal; the frequency of the first single-frequency signal is different from the frequency of the second single-frequency signal; The input terminal of the first power amplifier is electrically connected to the first output terminal of the frequency division unit, and the first power amplifier is used to amplify one path of the first single-frequency signal; The input terminal of the second power amplifier is electrically connected to the second output terminal of the frequency division unit, and the second power amplifier is used to amplify one path of the second single-frequency signal.

2. The radio frequency device according to claim 1, characterized in that, the frequency division unit includes: a first radio frequency channel and a different-frequency splitter; The input terminal of the different-frequency splitter is electrically connected to the output terminal of the first radio frequency channel; the different-frequency splitter includes a first output terminal and a second output terminal, the first output terminal of the different-frequency splitter is the first output terminal of the frequency division unit, and the second output terminal of the different-frequency splitter is the second output terminal of the frequency division unit; The step of performing frequency division on the initial multi-band analog signal and outputting a first single-frequency signal through the first output terminal and outputting a second single-frequency signal through the second output terminal includes: The first radio frequency channel is used to receive the initial multi-band analog signal, amplify the initial multi-band analog signal, and output a first multi-band analog signal; The different-frequency splitter is used to perform frequency division processing on the first multi-band analog signal; the different-frequency splitter outputs the first single-frequency signal through the first output terminal of the different-frequency splitter, and outputs the second single-frequency signal through the second output terminal of the different-frequency splitter.

3. The radio frequency device according to claim 1, characterized in that, the frequency division unit includes: a different-frequency splitter, a second radio frequency channel, and a third radio frequency channel; The different-frequency splitter includes a first output terminal and a second output terminal; The first output terminal of the different-frequency splitter is electrically connected to the input terminal of the second radio frequency channel, and the output terminal of the second radio frequency channel is the first output terminal of the frequency division unit; The second output terminal of the different-frequency splitter is electrically connected to the input terminal of the third radio frequency channel, and the output terminal of the third radio frequency channel is the second output terminal of the frequency division unit; The step of performing frequency division on the initial multi-band analog signal and outputting a first single-frequency signal through the first output terminal and outputting a second single-frequency signal through the second output terminal includes: The different-frequency splitter is used to receive the initial multi-band analog signal, perform frequency division processing on the first multi-band analog signal, output a first initial single-frequency signal through the first output terminal of the different-frequency splitter, and output a second initial single-frequency signal through the second output terminal of the different-frequency splitter; The second radio frequency channel is used to amplify the first initial single-frequency signal and output the first single-frequency signal through the output end of the second radio frequency channel; The third radio frequency channel is used to amplify the second initial single-frequency signal and output the second single-frequency signal through the output end of the third radio frequency channel.

4. The radio frequency device according to claim 1, wherein, the frequency division unit includes a first radio frequency channel, a second radio frequency channel, a third radio frequency channel and a different-frequency splitter; the output end of the first radio frequency channel is electrically connected to the input end of the different-frequency splitter, and the different-frequency splitter includes a first output end and a second output end; the first output end of the different-frequency splitter is electrically connected to the input end of the second radio frequency channel, and the output end of the second radio frequency channel is the first output end of the frequency division unit; the second output end of the different-frequency splitter is electrically connected to the input end of the third radio frequency channel, and the output end of the third radio frequency channel is the second output end of the frequency division unit; the step of outputting the first single-frequency signal through the first output end and the second single-frequency signal through the second output end after frequency-dividing the initial multi-band analog signal includes: the first radio frequency channel is used to receive the initial multi-band analog signal, amplify the initial multi-band analog signal, and output a first multi-band analog signal; the different-frequency splitter is used to amplify the first multi-band analog signal, output a first initial single-frequency signal through the first output end of the different-frequency splitter, and output a second initial single-frequency signal through the second output end of the different-frequency splitter; the second radio frequency channel is used to amplify the first initial single-frequency signal and output the first single-frequency signal through the output end of the second radio frequency channel; the third radio frequency channel is used to amplify the second initial single-frequency signal and output the second single-frequency signal through the output end of the third radio frequency channel.

5. The radio frequency device according to claim 1, wherein, the frequency division unit further includes a third output end, and the frequency division unit outputs a third single-frequency signal through the third output end after frequency-dividing the initial multi-band analog signal, and the frequency of the third single-frequency signal, the frequency of the first single-frequency signal and the frequency of the second single-frequency signal are different from each other; the radio frequency device further includes: a third power amplifier, the input end of the third power amplifier is electrically connected to the third output end, and the third power amplifier is used to amplify one path of the third single-frequency signal.

6. A radio frequency device, wherein, it includes a first frequency division unit, a second frequency division unit, a first multi-input power amplifier and a second multi-input power amplifier: The first frequency division unit includes a first output terminal and a second output terminal; the first frequency division unit is configured to receive a first initial multi-band analog signal, perform frequency division on the first initial multi-band analog signal, and output a first single-frequency signal through the first output terminal of the first frequency division unit, and output a second single-frequency signal through the second output terminal of the first frequency division unit; the frequency of the first single-frequency signal is different from the frequency of the second single-frequency signal; The second frequency division unit includes a first output terminal and a second output terminal; the second frequency division unit is configured to receive a second initial multi-band analog signal, perform frequency division on the second initial multi-band analog signal, and output a first single-frequency signal through the first output terminal of the second frequency division unit, and output a second single-frequency signal through the second output terminal of the second frequency division unit; The first multi-input power amplifier includes a first input terminal and a second input terminal, and the first input terminal of the first multi-input power amplifier is electrically connected to the first output terminal of the first frequency division unit; the second input terminal of the first multi-input power amplifier is electrically connected to the first output terminal of the second frequency division unit; the first multi-input power amplifier is configured to amplify at least two paths of the first single-frequency signals; The second multi-input power amplifier includes a first input terminal and a second input terminal, and the first input terminal of the second multi-input power amplifier is electrically connected to the second output terminal of the first frequency division unit; the second input terminal of the second multi-input power amplifier is electrically connected to the second output terminal of the second frequency division unit; the second multi-input power amplifier is configured to amplify at least two paths of the second single-frequency signals.

7. The radio frequency device according to claim 6, wherein, the first frequency division unit includes: a first shared radio frequency channel and a first different-frequency splitter; the input terminal of the first different-frequency splitter is electrically connected to the output terminal of the first shared radio frequency channel; the first different-frequency splitter includes a first output terminal and a second output terminal, the first output terminal of the first different-frequency splitter is the first output terminal of the first frequency division unit, and the second output terminal of the first different-frequency splitter is the second output terminal of the first frequency division unit; The step of performing frequency division on the first initial multi-band analog signal and outputting a first single-frequency signal through the first output terminal of the first frequency division unit and outputting a second single-frequency signal through the second output terminal of the first frequency division unit includes: the first shared radio frequency channel is configured to receive the first initial multi-band analog signal, perform amplification processing on the first initial multi-band analog signal, and output a first multi-band signal, and the first multi-band signal is an analog signal; the first different-frequency splitter is configured to perform frequency division processing on the first multi-band signal, output a first single-frequency signal through the first output terminal of the first different-frequency splitter, and output a second single-frequency signal through the second output terminal of the first different-frequency splitter; and / or, the second frequency division unit includes: a second shared radio frequency channel and a second different-frequency splitter; The input end of the second different-frequency splitter is electrically connected to the output end of the second shared radio frequency channel. The second different-frequency splitter includes a first output end and a second output end. The first output end of the second different-frequency splitter is the first output end of the second frequency division unit, and the second output end of the second different-frequency splitter is the second output end of the second frequency division unit; The step of dividing the second initial multi-band analog signal and outputting a first single-frequency signal through the first output end of the second frequency division unit and outputting a second single-frequency signal through the second output end of the second frequency division unit includes: The second shared radio frequency channel is configured to receive the second initial multi-band analog signal, perform amplification processing on the second initial multi-band analog signal, and output a second multi-band signal, where the second multi-band signal is an analog signal; The second different-frequency splitter is configured to perform frequency division processing on the second multi-band signal, output a first single-frequency signal through the first output end of the second different-frequency splitter, and output a second single-frequency signal through the second output end of the second different-frequency splitter.

8. The radio frequency device according to claim 6, wherein, The first frequency division unit includes: a first different-frequency splitter, a first single-frequency radio frequency channel, and a second single-frequency radio frequency channel; The first different-frequency splitter includes a first output end and a second output end; The input end of the first single-frequency radio frequency channel is electrically connected to the first output end of the first different-frequency splitter, and the output end of the first single-frequency radio frequency channel is the first output end of the first frequency division unit; The input end of the second single-frequency radio frequency channel is electrically connected to the second output end of the first different-frequency splitter, and the output end of the second single-frequency radio frequency channel is the second output end of the first frequency division unit; The step of dividing the first initial multi-band analog signal and outputting a first single-frequency signal through the first output end of the first frequency division unit and outputting a second single-frequency signal through the second output end of the first frequency division unit includes: The first different-frequency splitter is configured to receive the first initial multi-band analog signal, perform frequency division on the first initial multi-band analog signal, and output a first initial single-frequency signal through the first output end of the first different-frequency splitter; output a second initial single-frequency signal through the second output end of the first different-frequency splitter; The first single-frequency radio frequency channel is configured to perform amplification processing on the first initial single-frequency signal and output a first single-frequency signal through the output end; The second single-frequency radio frequency channel is configured to perform amplification processing on the second initial single-frequency signal and output a second single-frequency signal through the output end; and / or, The second frequency division unit includes: a second different-frequency splitter, a third single-frequency radio frequency channel, and a fourth single-frequency radio frequency channel; The second different-frequency splitter includes a first output end and a second output end; The input end of the third single-frequency radio frequency channel is electrically connected to the first output end of the second different-frequency splitter, and the output end of the third single-frequency radio frequency channel is the first output end of the second frequency division unit; The input end of the fourth single-frequency RF channel is electrically connected to the second output end of the second different-frequency splitter, and the output end of the fourth single-frequency RF channel is the second output end of the second frequency division unit; The step of dividing the second initial multi-band analog signal and outputting a first single-frequency signal through the first output end of the second frequency division unit and outputting a second single-frequency signal through the second output end of the second frequency division unit includes: The second different-frequency splitter is configured to receive the second initial multi-band analog signal, divide the second initial multi-band analog signal, and output a first initial single-frequency signal through the first output end of the second different-frequency splitter; and output a second initial single-frequency signal through the second output end of the second different-frequency splitter; The third single-frequency RF channel is configured to amplify the first initial single-frequency signal and output a first single-frequency signal through the output end of the third single-frequency RF channel; The fourth single-frequency RF channel is configured to amplify the second initial single-frequency signal and output a second single-frequency signal through the output end of the fourth single-frequency RF channel.

9. The RF device according to claim 6, wherein, the first frequency division unit includes: a first shared RF channel, a first different-frequency splitter, a first single-frequency RF channel, and a second single-frequency RF channel; the input end of the first different-frequency splitter is electrically connected to the output end of the first shared RF channel; the first different-frequency splitter includes a first output end and a second output end; the input end of the first single-frequency RF channel is electrically connected to the first output end of the first different-frequency splitter; the output end of the first single-frequency RF channel is the first output end of the first frequency division unit; the input end of the second single-frequency RF channel is electrically connected to the second output end of the first different-frequency splitter; the output end of the second single-frequency RF channel is the second output end of the first frequency division unit; The step of dividing the first initial multi-band analog signal and outputting a first single-frequency signal through the first output end of the first frequency division unit and outputting a second single-frequency signal through the second output end of the first frequency division unit includes: The first shared RF channel is configured to receive the first initial multi-band analog signal, amplify the first initial multi-band analog signal, and output a first multi-band signal, where the first multi-band signal is an analog signal; The first different-frequency splitter is configured to divide the first multi-band signal, output a first initial single-frequency signal through the first output end of the first different-frequency splitter; and output a second initial single-frequency signal through the second output end of the first different-frequency splitter; The first single-frequency RF channel is configured to amplify the first initial single-frequency signal and output a first single-frequency signal through the output end of the first single-frequency RF channel; The second single-frequency RF channel is configured to amplify the second initial single-frequency signal and output a second single-frequency signal through the output end of the second single-frequency RF channel; and / or, The second frequency division unit includes: a second shared radio frequency channel, a second different-frequency splitter, a third single-frequency radio frequency channel, and a fourth single-frequency radio frequency channel; The input end of the second different-frequency splitter is electrically connected to the output end of the second shared radio frequency channel; The second different-frequency splitter includes a first output end and a second output end; The input end of the third single-frequency radio frequency channel is electrically connected to the first output end of the second different-frequency splitter, and the output end of the third single-frequency radio frequency channel is the first output end of the second frequency division unit; The input end of the fourth single-frequency radio frequency channel is electrically connected to the second output end of the second different-frequency splitter, and the output end of the fourth single-frequency radio frequency channel is the second output end of the second frequency division unit; The step of dividing the second initial multi-band analog signal and outputting a first single-frequency signal through the first output end of the second frequency division unit and outputting a second single-frequency signal through the second output end of the second frequency division unit includes: The second shared radio frequency channel is used to receive the second initial multi-band analog signal, amplify the second initial multi-band analog signal, and output a second multi-band signal, where the second multi-band signal is an analog signal; The second different-frequency splitter is used to divide the second multi-band signal, output a first initial single-frequency signal through the first output end of the second different-frequency splitter, and output a second initial single-frequency signal through the second output end of the second different-frequency splitter; The third single-frequency radio frequency channel is used to amplify the first initial single-frequency signal and output a first single-frequency signal through the output end of the third single-frequency radio frequency channel; The fourth single-frequency radio frequency channel is used to amplify the second initial single-frequency signal and output a second single-frequency signal through the output end of the fourth single-frequency radio frequency channel.

10. The radio frequency device according to any one of claims 6 to 9, characterized in that The first initial multi-band analog signal is obtained by digital-to-analog conversion of at least two first multi-band digital signals, and the second initial multi-band analog signal is obtained by digital-to-analog conversion of at least two first multi-band digital signals; The radio frequency device further includes: a first digital predistortion unit, a first signal separation unit, a second digital predistortion unit, a second signal separation unit, a first digital-to-analog converter, and a second digital-to-analog converter; The first digital predistortion unit is used to receive an initial multi-band digital signal, perform multi-band non-linear correction on the initial multi-band digital signal, and output a first digital signal, where the first digital signal is a multi-band digital signal; The input end of the first signal separation unit is electrically connected to the output end of the first digital predistortion unit. The first signal separation unit includes a first output end and a second output end. The first signal separation unit is used to separate the first digital signal, output a first multi-band digital signal through the first output end of the first signal separation unit, and output a second multi-band digital signal through the second output end of the first signal separation unit; The second digital predistortion unit is configured to receive an initial multi-band digital signal, perform multi-band non-linear correction on the initial multi-band digital signal, and output a second digital signal, where the second digital signal is a multi-band digital signal; The input end of the second signal separation unit is electrically connected to the output end of the second digital predistortion unit. The second signal separation unit includes a first output end and a second output end. The second signal separation unit is configured to separate the second digital signal, output a first multi-band digital signal through the first output end of the second signal separation unit, and output a second multi-band digital signal through the second output end of the second signal separation unit; The first digital-to-analog converter includes a first input end and a second input end. The first input end of the first digital-to-analog converter is electrically connected to the first output end of the first signal separation unit; the second input end of the first digital-to-analog converter is electrically connected to the first output end of the second signal separation unit; the first digital-to-analog converter is configured to perform digital-to-analog conversion on at least two first multi-band digital signals to obtain the first initial multi-band analog signal; The second digital-to-analog converter includes a first input end and a second input end. The first input end of the second digital-to-analog converter is electrically connected to the second output end of the first signal separation unit; the second input end of the second digital-to-analog converter is electrically connected to the second output end of the second signal separation unit; the second digital-to-analog converter is configured to perform digital-to-analog conversion on at least two second multi-band digital signals to obtain the second initial multi-band analog signal.

11. The radio frequency device according to any one of claims 6 to 10, wherein, it further includes a third frequency division unit: The third frequency division unit includes a first output end and a second output end. The third frequency division unit is configured to receive a third initial multi-band analog signal, perform frequency division on the third initial multi-band analog signal, and output a first single-frequency signal through the first output end of the third frequency division unit, and output a second single-frequency signal through the second output end of the third frequency division unit; The first multi-input power amplifier further includes a third input end; the third input end of the first multi-input power amplifier is electrically connected to the first output end of the third frequency division unit; the first multi-input power amplifier is configured to perform amplification processing on at least three first single-frequency signals; The second multi-input power amplifier further includes a third input end. The third input end of the second multi-input power amplifier is electrically connected to the second output end of the third frequency division unit; the second multi-input power amplifier is configured to perform amplification processing on at least three second single-frequency signals.

12. The radio frequency device according to claim 10, wherein, the first signal separation unit further includes a third output end, and the third output end of the first signal separation unit outputs a third multi-band digital signal; the second signal separation unit further includes a third output end, and the third output end of the second signal separation unit outputs a third multi-band digital signal; The radio frequency device further includes: a third digital-to-analog converter and a third frequency division unit; The third digital-to-analog converter includes a first input end and a second input end. The first input end of the third digital-to-analog converter is electrically connected to the third output end of the first signal splitter, and the second input end of the third digital-to-analog converter is electrically connected to the third output end of the second signal splitter. The third digital-to-analog converter is configured to perform digital-to-analog conversion on at least two third multi-band digital signals to obtain a third initial multi-band analog signal; The input end of the third frequency division unit is electrically connected to the output end of the third digital-to-analog conversion. The third frequency division unit includes a first output end and a second output end. The third frequency division unit is configured to receive the third initial multi-band analog signal, perform frequency division on the third initial multi-band analog signal, and output a first single-frequency signal through the first output end of the third frequency division unit, and output a second single-frequency signal through the second output end of the third frequency division unit; The first multi-input power amplifier further includes a third input end, and the third input end of the first multi-input power amplifier is electrically connected to the first output end of the third frequency division unit. The first multi-input power amplifier is configured to perform amplification processing on at least three first single-frequency signals; The second multi-input power amplifier further includes a third input end, and the third input end of the second multi-input power amplifier is electrically connected to the second output end of the third frequency division unit. The second multi-input power amplifier is configured to perform amplification processing on at least three second single-frequency signals.

13. The radio frequency device according to any one of claims 6 to 10, wherein, the first frequency division unit further includes a third output end. After the first frequency division unit performs frequency division on the first initial multi-band analog signal, it further outputs a third single-frequency signal through the third output end of the first frequency division unit. The frequency of the third single-frequency signal, the frequency of the first single-frequency signal, and the frequency of the second single-frequency signal are different from each other; the second frequency division unit further includes a third output end. After the second frequency division unit performs frequency division on the second initial multi-band analog signal, it further outputs a third single-frequency signal through the third output end of the second frequency division unit; The radio frequency device further includes: a third multi-input power amplifier; The third multi-input power amplifier includes a first input end and a second input end. The first input end of the third multi-input power amplifier is electrically connected to the third output end in the first frequency division unit; the second input end of the third multi-input power amplifier is electrically connected to the third output end in the second frequency division unit. The third multi-input power amplifier is configured to perform amplification processing on at least two third single-frequency signals.

14. The radio frequency device according to claim 10, wherein, The first initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least three first multi-band digital signals. The first frequency division unit further includes a third output terminal. After the first frequency division unit divides the first initial multi-band analog signal, it also outputs a third single-frequency signal through the third output terminal of the first frequency division unit. The frequency of the third single-frequency signal, the frequency of the first single-frequency signal, and the frequency of the second single-frequency signal are different from each other; The second initial multi-band analog signal is obtained by performing digital-to-analog conversion on at least three second multi-band digital signals. The second frequency division unit further includes a third output terminal. After the second frequency division unit divides the second initial multi-band analog signal, it also outputs a third single-frequency signal through the third output terminal of the second frequency division unit; The radio frequency device further includes: a third digital predistortion unit, a third signal separation unit, and a third multi-input power amplifier; The third digital predistortion unit is configured to receive an initial multi-band digital signal, perform multi-band non-linear correction on the initial multi-band digital signal, and output a third digital signal, where the third digital signal is a multi-band digital signal; The input end of the third signal separation unit is electrically connected to the output end of the third digital predistortion unit. The third signal separation unit includes a first output terminal and a second output terminal. The third signal separation unit is configured to separate the third digital signal, output a first multi-band digital signal through the first output terminal of the third signal separation unit, and output a second multi-band digital signal through the second output terminal of the third signal separation unit; The first digital-to-analog converter further includes a third input terminal. The first output terminal of the third signal separation unit is electrically connected to the third input terminal of the first digital-to-analog converter; the first digital-to-analog converter is configured to perform digital-to-analog conversion on at least three first multi-band digital signals into the first initial multi-band analog signal; The second digital-to-analog converter further includes a third input terminal. The second output terminal of the third signal separation unit is electrically connected to the third input terminal of the second digital-to-analog converter; the second digital-to-analog converter is configured to perform digital-to-analog conversion on at least three second multi-band digital signals into the second output multi-band analog signal; The third multi-input power amplifier includes a first input terminal and a second input terminal. The first frequency division unit further includes a third output terminal. The second frequency division unit further includes a third output terminal. The first input terminal of the third multi-input power amplifier is electrically connected to the third output terminal of the first frequency division unit; the second input terminal of the third multi-input power amplifier is electrically connected to the third output terminal of the second frequency division unit; the third multi-input power amplifier is configured to perform amplification processing on at least two of the third single-frequency signals.

15. A device, characterized in that, the device includes the radio frequency device according to any one of claims 1-14.

Images