Radio frequency communication system

Abstract

The present application provides a radio frequency communication system, comprising: a first power amplifier (PA), a first low noise amplifier (LNA), a second LNA, a first switch, a first filter, and a second filter. The first switch comprises a connecting end, a first switching end, and a second switching end; the first filter is connected to the connecting end of the first switch, an output end of the first PA is connected to the first switching end of the first switch, and an input end of the first LNA is connected to the second switching end of the first switch; the first switch is configured to connect the connecting end of the first switch to the first switching end of the first switch, or to connect the connecting end of the first switch to the second switching end of the first switch, so as to switch the first PA to a first transmit channel of the first filter and switch the first filter to a first receive channel of the first LNA; the second filter is connected to an input end of the second LNA to form a second receive channel. The radio frequency communication system provided by the present application can achieve flexible application of the spectrum of the radio frequency communication system.

Description

A radio frequency communication system

[0001] This application claims priority to Chinese Patent Application No. 202410494299.4, filed on April 19, 2024, entitled "A Radio Frequency Communication System", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more specifically, to a radio frequency communication system. Background Technology

[0003] With the current technological evolution of IMT global mobile communications, old spectrum allocation strategies may be subject to new discussions, and new applications may be reallocated to support the continued evolution of mobile communication technologies.

[0004] Currently known spectrum allocation strategies for radio frequency (RF) communication systems still rely on dedicated frequency bands. Frequency division dual (FDD) bands are used in FDD communication modes, and time division dual (TDD) bands are used in TDD communication modes. Each frequency band segment must have an independent duplexer, filter, and corresponding switches and control circuits. For example, traditional FDD bands typically have dedicated duplexers to enable simultaneous transmission and reception at different frequencies. However, this operation according to specific frequencies and duplex modes lacks flexibility, making spectrum allocation inflexible. Therefore, how to achieve flexible spectrum application in RF communication systems has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides a radio frequency communication system that enables flexible application of the radio frequency communication system's spectrum.

[0006] In a first aspect, a radio frequency communication system is provided, comprising: a first power amplifier (PA), a first low-noise amplifier (LNA), a second LNA, a first switch, a first filter, and a second filter. The first switch includes a connection terminal, a first switching terminal, and a second switching terminal. The first filter is connected to the connection terminal of the first switch. The output terminal of the first PA is connected to the first switching terminal of the first switch. The input terminal of the first LNA is connected to the second switching terminal of the first switch. The first switch is used to connect the connection terminal of the first switch to the first switching terminal of the first switch, or to connect the connection terminal of the first switch to the second switching terminal of the first switch, to switch a first transmission channel from the first PA to the first filter and a first reception channel from the first filter to the first LNA. The second filter is connected to the input terminal of the second LNA to form a second reception channel.

[0007] It should be understood that when the connection terminal of the first switch is connected to the first switching terminal of the first switch, the first transmit channel from the first PA to the first filter and the second receive channel from the second filter to the second LNA can work simultaneously in two frequency bands, that is, the radio frequency communication system supports operation in FDD Band1 mode; in addition, in the frequency band of the first filter, the first switch can switch the first transmit channel from the first PA to the first filter and the first receive channel from the first filter to the first LNA in different time slots, that is, the radio frequency communication system also supports TDD communication mode in the TX band.

[0008] The radio frequency communication system provided in this application embodiment supports TDD communication mode of TX band in the original FDD communication mode by adding a first switch and a first LNA, thus realizing flexible application of the spectrum of the radio frequency communication system.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the radio frequency communication system further includes a second switch and a third switch. The second switch includes a connection terminal, a first switching terminal, and a second switching terminal. The third switch includes a connection terminal, a first switching terminal, and a second switching terminal. The output terminal of the first PA is connected to the connection terminal of the second switch. The first switching terminal of the first switch is connected to the first switching terminal of the second switch. The first switching terminal of the third switch is connected to the second switching terminal of the second switch. The input terminal of the second LNA is connected to the second switching terminal of the third switch. The second filter is connected to the connection terminal of the third switch. The second switch is used to connect the connection terminal of the second switch to the first switching terminal of the second switch, or to connect the connection terminal of the second switch to the second switching terminal of the second switch, to switch the first transmit channel from the first PA to the first filter and the second transmit channel from the first PA to the second filter. The third switch is used to connect the connection terminal of the third switch to the first switching terminal of the third switch, or to connect the connection terminal of the third switch to the second switching terminal of the third switch, to switch the second transmit channel from the first PA to the second filter and the second receive channel from the second filter to the second LNA.

[0010] The radio frequency communication system provided in this application embodiment adds a second switch and a third switch, supporting TDD communication mode in the TX band and TDD communication mode in the RX band under the original FDD communication mode, realizing flexible application of the spectrum of the radio frequency communication system.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the radio frequency communication system further includes a first switching component and a first antenna module, wherein the first filter and the second filter are connected to the first antenna module through the first switching component.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the radio frequency communication system further includes a diversity receiving module, which includes a fourth LNA, a fifth LNA, a fourth filter, and a fifth filter. The input terminal of the fourth LNA is connected to the fourth filter to form a first diversity receiving channel, and the input terminal of the fifth LNA is connected to the fifth filter to form a second diversity receiving channel. The frequency band of the fourth filter is the same as the frequency band of the first filter, and the frequency band of the fifth filter is the same as the frequency band of the second filter.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the radio frequency communication system further includes a second PA, a third LNA, a third filter, and a fourth switch. The fourth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The output terminal of the second PA is connected to the first switching terminal of the fourth switch, the input terminal of the third LNA is connected to the second switching terminal of the fourth switch, and the third filter is connected to the connection terminal of the fourth switch. The fourth switch is used to connect the connection terminal of the fourth switch to the first switching terminal of the fourth switch, or to connect the connection terminal of the fourth switch to the second switching terminal of the fourth switch, so as to switch the third transmit channel from the second PA to the third filter and the third receive channel from the third filter to the third LNA.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the radio frequency communication system further includes a first switching assembly and a first antenna module, wherein the first filter, the second filter, and the third filter are connected to the first antenna module through the first switching assembly.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the radio frequency communication system further includes a diversity receiving module, which includes a fourth LNA, a fifth LNA, a sixth LNA, a fourth filter, a fifth filter, and a sixth filter. The input terminal of the fourth LNA is connected to the fourth filter to form a first diversity receiving channel, the input terminal of the fifth LNA is connected to the fifth filter to form a second diversity receiving channel, and the input terminal of the sixth LNA is connected to the sixth filter to form a third diversity receiving channel. The frequency band of the fourth filter is the same as the frequency band of the first filter, the frequency band of the fifth filter is the same as the frequency band of the second filter, and the frequency band of the sixth filter is the same as the frequency band of the third filter.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the radio frequency communication system further includes a second switching assembly and a second antenna module, wherein the fourth filter, the fifth filter, and the sixth filter are connected to the second antenna module via the second switching assembly.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the frequency band of the first filter is 1920–1980 MHz.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the frequency band of the second filter is 2110–2170 MHz.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the first switch is a single-pole double-throw switch or a multi-pole multi-throw switch.

[0020] In conjunction with the first aspect, in some implementations of the first aspect, the frequency band of the third filter is 1880–1920 MHz.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the radio frequency communication system further includes a modem and a radio frequency chip, wherein the input terminal of the first PA, the output terminal of the first LNA and the output terminal of the second LNA are connected to the radio frequency chip, and the radio frequency chip is connected to the modem.

[0022] Secondly, a radio frequency system is provided, comprising: a first power amplifier (PA), a first low-noise amplifier (LNA), a fifth switch, a sixth switch, a first filter, and a second filter. The fifth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The sixth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The output terminal of the first PA is connected to the connection terminal of the fifth switch. The first filter is connected to the first switching terminal of the fifth switch. The first switching terminal of the sixth switch is connected to the second switching terminal of the fifth switch. The input terminal of the first LNA is connected to the second switching terminal of the sixth switch. The second filter is connected to the connection terminal of the sixth switch. The fifth switch is used to connect the connection terminal of the fifth switch to the first switching terminal of the fifth switch, or to connect the connection terminal of the fifth switch to the second switching terminal of the fifth switch, to switch a first transmission channel from the first PA to the first filter and a second transmission channel from the first PA to the second filter. The sixth switch is used to connect the connection terminal of the sixth switch to the first switching terminal of the sixth switch, or to connect the connection terminal of the sixth switch to the second switching terminal of the sixth switch, to switch a second transmission channel from the first PA to the second filter and a first reception channel from the second filter to the first LNA.

[0023] It should be understood that when the connection terminal of the fifth switch is connected to the first switching terminal of the fifth switch and the connection terminal of the sixth switch is connected to the second switching terminal of the sixth switch, the first transmit channel from the first PA to the first filter and the first receive channel from the second filter to the first LNA can operate simultaneously in two frequency bands, that is, the RF communication system supports operation in FDD Band1 mode; at the same time, in the frequency band of the second filter, when the connection terminal of the fifth switch is connected to the second switching terminal of the fifth switch, the sixth switch switches the second transmit channel from the first PA to the second filter and the first receive channel from the second filter to the first LNA in different time slots, that is, the RF communication system also supports TDD communication mode in the RX band.

[0024] The radio frequency communication system provided in this application embodiment adds a fifth switch and a sixth switch to support TDD communication mode in the RX band under FDD communication mode, realizing flexible application of the radio frequency communication system spectrum.

[0025] In conjunction with the second aspect, in some implementations of the second aspect, the radio frequency communication system further includes a seventh switch and a second LNA. The seventh switch includes a connection terminal, a first switching terminal, and a second switching terminal. The first filter is connected to the connection terminal of the seventh switch, the first switching terminal of the fifth switch is connected to the first switching terminal of the seventh switch, and the second LNA is connected to the second switching terminal of the seventh switch. The seventh switch is used to connect the connection terminal of the seventh switch to the first switching terminal of the seventh switch, or to connect the connection terminal of the seventh switch to the second switching terminal of the seventh switch, so as to switch the first transmit channel from the first PA to the first filter and the second receive channel from the first filter to the second LNA.

[0026] In conjunction with the second aspect, in some implementations of the second aspect, the radio frequency communication system further includes a first switching assembly and a first antenna module, wherein the first filter and the second filter are connected to the first antenna module through the first switching assembly.

[0027] In conjunction with the second aspect, in some implementations of the second aspect, the radio frequency communication system further includes a diversity receiving module, which includes a fifth LNA and a fifth filter. The input of the fifth LNA is connected to the fifth filter to form a second diversity receiving channel. The frequency band of the fifth filter is the same as that of the second filter.

[0028] In conjunction with the second aspect, in some implementations of the second aspect, the radio frequency communication system further includes a second PA, a third LNA, a third filter, and a fourth switch. The fourth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The output terminal of the second PA is connected to the first switching terminal of the fourth switch, the input terminal of the third LNA is connected to the second switching terminal of the fourth switch, and the third filter is connected to the connection terminal of the fourth switch. The fourth switch is used to connect the connection terminal of the fourth switch to the first switching terminal of the fourth switch, or to connect the connection terminal of the fourth switch to the second switching terminal of the fourth switch, so as to switch the third transmit channel from the second PA to the third filter and the third receive channel from the third filter to the third LNA.

[0029] In conjunction with the second aspect, in some implementations of the second aspect, the radio frequency communication system further includes a first switching assembly and a first antenna module, wherein the first filter, the second filter, and the third filter are connected to the first antenna module through the first switching assembly.

[0030] In conjunction with the second aspect, in some implementations of the second aspect, the radio frequency communication system further includes a diversity receiving module. The diversity receiving module includes a fourth LNA, a fifth LNA, a sixth LNA, a fourth filter, a fifth filter, and a sixth filter. The input terminal of the fourth LNA is connected to the fourth filter to form a first diversity receiving channel; the input terminal of the fifth LNA is connected to the fifth filter to form a second diversity receiving channel; and the input terminal of the sixth LNA is connected to the sixth filter to form a third diversity receiving channel. The frequency band of the fourth filter is the same as the frequency band of the first filter, the frequency band of the fifth filter is the same as the frequency band of the second filter, and the frequency band of the sixth filter is the same as the frequency band of the third filter.

[0031] In conjunction with the second aspect, in some implementations of the second aspect, the radio frequency communication system further includes a second switching assembly and a second antenna module, wherein the fourth filter, the fifth filter, or the sixth filter is connected to the second antenna module via the second switching assembly.

[0032] In conjunction with the second aspect, in some implementations of the second aspect, the frequency band of the first filter is 1920–1980 MHz.

[0033] In conjunction with the second aspect, in some implementations of the second aspect, the frequency band of the second filter is 2110–2170 MHz.

[0034] In conjunction with the second aspect, in some implementations of the second aspect, the fifth switch or the sixth switch is a single-pole double-throw switch or a multi-pole multi-throw switch.

[0035] In conjunction with the second aspect, in some implementations of the second aspect, the frequency band of the third filter is 1880–1920 MHz.

[0036] In conjunction with the second aspect, in some implementations of the second aspect, the radio frequency communication system further includes a modem and a radio frequency chip, wherein the input terminal of the first PA, the output terminal of the first LNA and the output terminal of the second LNA are connected to the radio frequency chip, and the radio frequency chip is connected to the modem.

[0037] Thirdly, a radio frequency communication system is provided, comprising: a first power amplifier (PA), a first low-noise amplifier (LNA), an eighth switch, a ninth switch, a first filter, and a second filter. The eighth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The ninth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The first filter is connected to the connection terminal of the eighth switch. The output terminal of the first PA is connected to the first switching terminal of the eighth switch. The first switching terminal of the ninth switch is connected to the second switching terminal of the eighth switch. The second filter is connected to the second switching terminal of the ninth switch. The input terminal of the first LNA is connected to the connection terminal of the ninth switch. The eighth switch is used to connect the connection terminal of the eighth switch to the first switching terminal of the eighth switch, or to connect the connection terminal of the eighth switch to the second switching terminal of the eighth switch, to switch a first transmit channel from the first PA to the first filter and a first receive channel from the first filter to the first LNA. The ninth switch is used to connect the connection terminal of the ninth switch to the first switching terminal of the ninth switch, or to connect the connection terminal of the ninth switch to the second switching terminal of the ninth switch, to switch a first receive channel from the first filter to the first LNA and a second receive channel from the second filter to the first LNA.

[0038] It should be understood that when the connection terminal of the eighth switch is connected to the first switching terminal of the eighth switch and the connection terminal of the ninth switch is connected to the second switching terminal of the ninth switch, the first transmit channel from the first PA to the first filter and the second receive channel from the second filter to the first LNA can operate simultaneously in two frequency bands, that is, the radio frequency communication system supports operation in FDD Band1 mode; at the same time, in the frequency band of the first filter, when the connection terminal of the ninth switch is connected to the first switching terminal of the ninth switch, the eighth switch switches the first transmit channel from the first PA to the first filter and the first receive channel from the first filter to the first LNA in different time slots, that is, the radio frequency communication system also supports TDD communication mode in the TX band.

[0039] The radio frequency communication system provided in this application embodiment adds an eighth switch and a ninth switch, supporting TDD communication mode in the TX band in the original FDD communication mode, realizing flexible application of the radio frequency communication system spectrum.

[0040] In conjunction with the third aspect, in some implementations of the third aspect, the eighth switch or the ninth switch is a single-pole double-throw switch or a multi-pole multi-throw switch. Attached Figure Description

[0041] Figure 1 is a schematic diagram of an electronic device provided in an embodiment of this application.

[0042] Figure 2 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application.

[0043] Figure 3 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application.

[0044] Figure 4 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application.

[0045] Figure 5 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application.

[0046] Figure 6 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application.

[0047] Figure 7 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application.

[0048] Figure 8 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application.

[0049] Figure 9 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application. Detailed Implementation

[0050] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0051] Figure 1 is a schematic diagram of the internal circuit of an electronic device provided in an embodiment of this application.

[0052] As shown in Figure 1, an electronic device may include an application processor (AP), a baseband module, a digital-to-analog converter, a radio frequency module, and an antenna module.

[0053] An application processor can run an open operating system and various applications running on top of it, and is responsible for the overall system control. During signal transmission, the application processor can transmit digital signals, such as voice signals, to the baseband module.

[0054] The baseband module can be used to encode and modulate received digital signals. For example, in the process of transmitting electrical signals to the outside, the baseband module encodes and modulates them to make the information in the digital signal occupy less space and to resist interference and attenuation in the channel, thereby improving link performance.

[0055] A digital-to-analog converter (DAC) can be used to convert digital signals output from the baseband module into analog signals for processing by the radio frequency (RF) module. Alternatively, it can convert analog signals output from the RF module into digital signals for processing by the baseband module.

[0056] Radio frequency (RF) modules can be used to modulate the frequency of received electrical signals and amplify their power. For example, in the process of transmitting electrical signals to the outside world, the RF module modulates the analog signal from a low frequency to a specified high frequency band, making it an RF signal that can be transmitted through the air, and amplifies the power of the RF signal to meet communication requirements.

[0057] The antenna module can be used to transmit radio frequency signals processed by the radio frequency module to the outside, or to receive external electromagnetic wave signals and transmit them to the radio frequency module.

[0058] Figures 2 and 3 are schematic diagrams of a radio frequency communication system provided in an embodiment of this application. As shown in Figure 2, the radio frequency communication system may include a modem, a radio frequency chip (RF IC), a radio frequency front-end circuit, and an antenna module.

[0059] The radio frequency (RF) chip is used to modulate and demodulate RF signals, performing up-conversion (increasing the frequency of the RF signal) and down-conversion (decreasing the frequency of the RF signal). The power amplifier (PA) can be placed on the transmit channel to amplify the power of the transmitted RF signal. The low-frequency amplifier (LNA) can be placed on the receive channel to amplify the power of the RF signal received by the antenna module. A switch can be used to switch the RF channel (transmit or receive) connected to the antenna module in different time slots.

[0060] In one embodiment, as shown in Figure 2, the RF front-end circuit operates in a frequency division dual (FDD) communication system. The RF front-end circuit may not include switches; the transmit channel from the PA to the filter and the receive channel from the filter to the LNA can be electrically connected to different antenna elements in the antenna module, respectively.

[0061] As shown in Figure 3, by utilizing different electrical connection states of the switch (switching the antenna module to the transmit channel or the receive channel), the RF front-end circuit can operate in a time-division dual (TDD) communication system. For example, in the time slot corresponding to the transmit signal, the switch switches to the transmit channel, electrically connecting the transmit channel and the antenna module, and the RF signal is transmitted to the antenna module through the transmit channel and radiated externally. Alternatively, in the time slot corresponding to the receive signal, the switch switches to the receive channel, electrically connecting the receive channel and the antenna module, and the RF signal received by the antenna module is transmitted to the RF chip for processing through the receive channel.

[0062] Figure 4 is a schematic diagram of an RF communication system. The RF front-end circuit in the RF communication system can operate in both FDD and TDD modes. In FDD mode, the PA and LNA can switch between the transmit and receive channels connected to the antenna module in different time slots. In TDD mode, the PA and LNA switch between the transmit and receive channels via a switch, and the duplexers are set independently. This means that in FDD mode, the transmit (TX) band corresponding to the filter connected to the PA cannot be used for receiving, and the receive (RX) band corresponding to the filter connected to the LNA cannot be used for transmitting. Adding a separate duplexer would increase cost or space constraints, thus greatly limiting the application of spectrum in the RF communication system. Therefore, this application provides an RF communication system that allows for more flexible spectrum application.

[0063] Figure 5 is a schematic diagram of a radio frequency communication system provided in an embodiment of this application. The radio frequency communication system is described below with reference to Figure 5.

[0064] The radio frequency communication system provided in this application includes: a first PA11, a first LNA21, a second LNA22, a first switch 100, a first filter 30, and a second filter 40. The first switch 100 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 103 of the first switch is connected to either the first switching terminal 101 or the second switching terminal 102 of the first switch.

[0065] The first filter 30 is connected to the connection terminal 103 of the first switch, the output terminal of the first PA11 is connected to the first switching terminal 101 of the first switch, the input terminal of the first LNA21 is connected to the second switching terminal 102 of the first switch, the first switch 100 can be used to switch the first transmission channel from the first PA11 to the first filter 30 and the first receiving channel from the first filter 30 to the first LNA21, and the second filter 40 is connected to the input terminal of the second LNA22 to form the second receiving channel.

[0066] It should be noted that when the connection terminal 103 of the first switch is connected to the first switching terminal 101 of the first switch, the first transmission channel from the first PA11 to the first filter 30 and the second receiving channel from the second filter 40 to the second LNA 22 can work simultaneously in two frequency bands, that is, the radio frequency communication system supports operation in FDD Band 1 mode; in addition, in the frequency band of the first filter 30, the first switch 100 can switch the first transmission channel from the first PA11 to the first filter 30 and the first receiving channel from the first filter 30 to the first LNA 21 in different time slots, that is, the radio frequency communication system also supports TDD communication mode in the TX band.

[0067] The radio frequency communication system provided in this application embodiment supports TDD communication mode of TX band in the original FDD communication mode by adding a first switch 100 and a first LNA 21, thus realizing flexible application of the spectrum of the radio frequency communication system.

[0068] In some embodiments, as shown in FIG5, the radio frequency communication system further includes a second PA12, a third LNA23, a fourth switch 400, and a third filter 50. The fourth switch 400 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 403 of the fourth switch can be connected to either the first switching terminal 401 or the second switching terminal 402 of the fourth switch. The output terminal of the second PA12 is connected to the first switching terminal 401 of the fourth switch. The input terminal of the third LNA23 is connected to the second switching terminal 402 of the fourth switch. The third filter 50 is connected to the connection terminal 403 of the fourth switch. The fourth switch 400 can be used to switch the third transmit channel from the second PA12 to the third filter 50 and the third receive channel from the third filter 50 to the third LNA23.

[0069] It should be understood that the radio frequency communication system provided in this application embodiment also supports the TDD communication mode of the RX band, that is, it supports the fourth switch 400 to switch the third transmit channel from the second PA12 to the third transmit channel of the third filter 50 and the third receive channel from the third filter 50 to the third LNA23 in different time slots under the frequency band of the third filter 50.

[0070] In some embodiments, as shown in FIG5, the radio frequency communication system further includes an antenna group, which includes a first switch assembly 100 and a first antenna module 2000. A first filter 30, a second filter 40, or a third filter 50 is connected to the first antenna module 2000 via the switch assembly. The first switch assembly 1000 is used to simultaneously connect the first filter 30, the second filter 40, and the third filter 50 to different units of the first antenna module 2000, or the first switch assembly 1000 is used to switch between connecting the first filter 30 and the first antenna module 2000, or the second filter 40 and the first antenna module 2000, or the third filter 50 and the first antenna module 2000. This application does not specifically limit the specific connection.

[0071] In some embodiments, the first filter 30, the second filter 40, or the third filter 50 may each be connected to different antennas, or the first filter 30 and the second filter 40 may be connected to the same antenna, while the third filter 50 may be connected to different antennas. This application embodiment is not limited to this.

[0072] In some embodiments, the radio frequency chip of the radio frequency communication system is connected to the modem, and the input terminals of the first PA11, the second PA12, the first LNA21, the second LNA22, and the third LNA23 are connected to the radio frequency chip.

[0073] In some embodiments, the radio frequency communication system further includes a diversity receiving module, which is used by the receiving end to perform specific combining processing on multiple independent fading characteristic signals received to reduce signal level fluctuations.

[0074] Specifically, the diversity receiving module includes a fourth LNA 24, a fifth LNA 25, a fourth filter 60, and a fifth filter 70. The input of the fourth LNA 24 is connected to the fourth filter 60 to form a first diversity receiving channel, and the input of the fifth LNA 25 is connected to the fifth filter 70 to form a second diversity receiving channel. The frequency band of the fourth filter 60 is the same as that of the first filter 30, and the frequency band of the fifth filter 70 is the same as that of the second filter 40.

[0075] In some embodiments, the diversity receiving module further includes a sixth LNA 26 and a sixth filter 80. The input terminal of the sixth LNA 26 is connected to the sixth filter 80 to form a third diversity receiving channel. The frequency band of the sixth filter 80 is the same as that of the third filter 50.

[0076] It should be understood that the diversity receiving channel of the diversity receiving module can be configured to correspond to the receiving channel of the main receiving module of the radio frequency communication system. For example, the radio frequency communication system includes a first receiving channel from the first filter 30 to the first LNA 21 and a second receiving channel from the second filter 40 to the second LNA 22, and the diversity receiving module includes a first diversity receiving channel from the fourth filter 60 to the fourth LNA 24 and a second diversity receiving channel from the fifth filter 70 to the fifth LNA 25; or, for another example, the radio frequency communication system includes a first receiving channel from the first filter 30 to the first LNA 21, a second receiving channel from the second filter 40 to the second LNA 22, and a third receiving channel from the third filter 50 to the third LNA 23, and the diversity receiving module includes a first diversity receiving channel from the fourth filter 60 to the fourth LNA 24, a second diversity receiving channel from the fifth filter 70 to the fifth LNA 25, and a third diversity receiving channel from the sixth filter 80 to the sixth LNA 26. However, the embodiments of this application are not limited to these.

[0077] In some embodiments, the radio frequency communication system further includes a diversity antenna group, which includes a second switch assembly 3000 and a second antenna module 4000. The output terminals of the fourth LNA 24, the fifth LNA 25, and the sixth LNA 26 are connected to the radio frequency chip. The fourth filter 60, the fifth filter 70, and the sixth filter 80 are connected to the second antenna module 4000 through the second switch assembly 3000.

[0078] Figure 6 shows another radio frequency communication system provided in an embodiment of this application. The radio frequency communication system is described below with reference to Figure 6.

[0079] The radio frequency communication system provided in this application includes a first PA11, a first LNA21, a second LNA22, a first switch 100, a second switch 200, a third switch 300, a first filter 30, and a second filter 40. The first switch 100 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 103 of the first switch is connected to either the first switching terminal 101 or the second switching terminal of the first switch. The second switch 200 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 203 of the second switch is connected to either the first switching terminal 201 or the second switching terminal of the second switch. The third switch 300 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 303 of the third switch is connected to either the first switching terminal 301 or the second switching terminal 302 of the third switch.

[0080] The first filter 30 is connected to the connection terminal 103 of the first switch, the first switching terminal 201 of the second switch is connected to the first switching terminal 101 of the first switch, the input terminal of the first LNA 21 is connected to the second switching terminal 102 of the first switch, the output terminal of the first PA11 is connected to the connection terminal 203 of the second switch, the first switching terminal 301 of the third switch is connected to the second switching terminal 202 of the second switch, the input terminal of the second LNA 22 is connected to the second switching terminal 302 of the third switch, and the second filter 40 is connected to the connection terminal 303 of the third switch.

[0081] It should be understood that the first switch 100 is used to switch the first transmit channel from the first PA11 to the first filter 30 and the first receive channel from the first filter 30 to the first LNA 21, the second switch 200 is used to switch the first transmit channel from the first PA11 to the first filter 30 and the second transmit channel from the first PA11 to the second filter 40, and the third switch 300 is used to switch the second transmit channel from the first PA11 to the second filter 40 and the second receive channel from the second filter 40 to the second LNA 22.

[0082] It should be noted that when the connection terminals 203 of the first switch 100 and the second switch are both connected to their respective first switching terminals, and the connection terminal 303 of the third switch is connected to the second switching terminal 302 of the third switch, the first transmit channel from the first PA11 to the first filter 30 and the second receive channel from the second filter 40 to the second LNA 22 can operate simultaneously in two frequency bands. That is, the radio frequency communication system supports FDD... Operating in Band1 mode; simultaneously, in the frequency band of the first filter 30, when the connection terminal 203 of the second switch is connected to the first switching terminal 201 of the second switch, the first switch 100 switches the first PA11 to the first transmit channel of the first filter 30 and the first receive channel of the first filter 30 to the first LNA 21 in different time slots, that is, the RF communication system also supports the TDD communication mode of the TX band; in the frequency band of the second filter 40, when the connection terminal 203 of the second switch is connected to the second switching terminal 202 of the second switch, the third switch 300 switches the first PA11 to the second transmit channel of the second filter 40 and the second receive channel of the second filter 40 to the second LNA 22 in different time slots, that is, the RF communication system also supports the TDD communication mode of the RX band.

[0083] The radio frequency communication system provided in this application embodiment adds a first switch 100, a first LNA 21, a second switch 200, and a third switch 300. In addition to the original FDD communication mode, it supports TDD communication mode in the TX band and TDD communication mode in the RX band, realizing flexible application of the spectrum of the radio frequency communication system.

[0084] In some embodiments, as shown in FIG6, the radio frequency communication system further includes a second PA12, a third LNA23, a fourth switch 400, and a third filter 50. The fourth switch 400 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 403 of the fourth switch can be connected to either the first switching terminal 401 or the second switching terminal 402 of the fourth switch. The output terminal of the second PA12 is connected to the first switching terminal 401 of the fourth switch. The input terminal of the third LNA23 is connected to the second switching terminal 402 of the fourth switch. The third filter 50 is connected to the connection terminal 403 of the fourth switch. The fourth switch 400 can be used to switch the third transmit channel from the second PA12 to the third filter 50 and the third receive channel from the third filter 50 to the third LNA23.

[0085] It should be understood that the radio frequency communication system provided in this application embodiment also supports another TDD communication mode in the RX band, that is, in the frequency band of the third filter 50, the fourth switch 400 can switch the third transmit channel from the second PA12 to the third transmit channel of the third filter 50 and the third receive channel from the third filter 50 to the third LNA23 in different time slots.

[0086] In some embodiments, as shown in FIG6, the radio frequency communication system further includes an antenna group, which includes a first switching assembly 1000 and a first antenna module 2000. A first filter 30, a second filter 40 or a third filter 50 are connected to the first antenna module 2000 through the switching assembly.

[0087] In some embodiments, the first filter 30, the second filter 40, or the third filter 50 may each be connected to different antennas, or the first filter 30 and the second filter 40 may be connected to the same antenna, while the third filter 50 may be connected to different antennas. This application embodiment is not limited to this.

[0088] In some embodiments, the radio frequency communication system further includes a modem, the radio frequency chip is connected to the modem, and the input terminals of the first PA11, the second PA12, the output terminals of the first LNA21, the second LNA22, and the third LNA23 are connected to the radio frequency chip.

[0089] In some embodiments, the radio frequency communication system further includes a diversity receiving module, which includes a fourth LNA 24, a fifth LNA 25, a fourth filter 60, and a fifth filter 70. The input terminal of the fourth LNA 24 is connected to the fourth filter 60 to form a first diversity receiving channel, and the input terminal of the fifth LNA 25 is connected to the fifth filter 70 to form a second diversity receiving channel. The frequency band of the fourth filter 60 is the same as that of the first filter 30, and the frequency band of the fifth filter 70 is the same as that of the second filter 40.

[0090] In some embodiments, the diversity receiving module further includes a sixth LNA 26 and a sixth filter 80. The input terminal of the sixth LNA 26 is connected to the sixth filter 80 to form a third diversity receiving channel. The frequency band of the sixth filter 80 is the same as that of the third filter 50.

[0091] In some embodiments, the radio frequency communication system further includes a diversity antenna group, which includes a second switch assembly 3000 and a second antenna module 4000. The output terminals of the fourth LNA 24, the fifth LNA 25, and the sixth LNA 26 are connected to the radio frequency chip. The fourth filter 60, the fifth filter 70, and the sixth filter 80 are connected to the second antenna module 4000 through the second switch assembly 3000.

[0092] Figure 7 shows another radio frequency communication system provided in an embodiment of this application. The radio frequency communication system is described below with reference to Figure 7.

[0093] The radio frequency communication system provided in this application includes a first PA11, a first LNA21, a fifth switch 500, a sixth switch 600, a first filter 30, and a second filter 40. The fifth switch 500 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 503 of the fifth switch is connected to either the first switching terminal 501 or the second switching terminal 502 of the fifth switch. The sixth switch 600 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 603 of the sixth switch is connected to either the first switching terminal 601 or the second switching terminal of the sixth switch.

[0094] Specifically, the output terminal of the first PA11 is connected to the connection terminal 503 of the fifth switch, the first filter 30 is connected to the first switching terminal 501 of the fifth switch, the first switching terminal 601 of the sixth switch is connected to the second switching terminal 502 of the fifth switch, the input terminal of the first LNA21 is connected to the second switching terminal 602 of the sixth switch, and the second filter 40 is connected to the connection terminal 603 of the sixth switch.

[0095] It should be understood that the fifth switch 500 is used to switch the first PA11 to the first transmit channel of the first filter 30 and the first PA11 to the second transmit channel of the second filter 40, and the sixth switch 600 is used to switch the first PA11 to the second transmit channel of the second filter 40 and the second filter 40 to the first receive channel of the first LNA 21.

[0096] It should be noted that when the connection terminal 503 of the fifth switch is connected to the first switching terminal 501 of the fifth switch and the connection terminal 603 of the sixth switch is connected to the second switching terminal 602 of the sixth switch, the first transmit channel from the first PA11 to the first filter 30 and the first receive channel from the second filter 40 to the first LNA 21 can operate simultaneously in two frequency bands, that is, the RF communication system supports operation in FDD Band 1 mode; at the same time, in the frequency band of the second filter 40, when the connection terminal 503 of the fifth switch is connected to the second switching terminal 502 of the fifth switch, the sixth switch 600 switches the second transmit channel from the first PA11 to the second filter 40 and the first receive channel from the second filter 40 to the first LNA 21 in different time slots, that is, the RF communication system also supports TDD communication mode in the RX band.

[0097] The radio frequency communication system provided in this application embodiment adds a fifth switch 500 and a sixth switch 600, supporting TDD communication mode in the RX band under FDD communication mode, realizing flexible application of the radio frequency communication system spectrum.

[0098] In some embodiments, as shown in FIG7, the radio frequency communication system further includes a second PA12, a third LNA23, a fourth switch 400, and a third filter 50. The fourth switch 400 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 403 of the fourth switch can be connected to either the first switching terminal 401 or the second switching terminal 402 of the fourth switch. The output terminal of the second PA12 is connected to the first switching terminal 401 of the fourth switch. The input terminal of the third LNA23 is connected to the second switching terminal 402 of the fourth switch. The third filter 50 is connected to the connection terminal 403 of the fourth switch. The fourth switch 400 can be used to switch the third transmit channel from the second PA12 to the third filter 50 and the third receive channel from the third filter 50 to the third LNA23.

[0099] It should be understood that the radio frequency communication system provided in this application embodiment also supports another TDD communication mode in the RX band, that is, in the frequency band of the third filter 50, the fourth switch 400 can switch the third transmit channel from the second PA12 to the third transmit channel of the third filter 50 and the third receive channel from the third filter 50 to the third LNA23 in different time slots.

[0100] In some embodiments, as shown in FIG7, the radio frequency communication system further includes an antenna group, which includes a first switch assembly 1000 and a first antenna module 2000. A first filter 30, a second filter 40, or a third filter 50 are connected to the first antenna module 2000 through the first switch assembly 1000.

[0101] In some embodiments, the radio frequency communication system further includes a modem, the radio frequency chip is connected to the modem, and the input terminals of the first PA11, the second PA12, the first LNA21, and the third LNA23 are connected to the radio frequency chip.

[0102] In some embodiments, the radio frequency communication system further includes a diversity receiving module, which includes a fifth LNA 25 and a fifth filter 70, wherein the input terminal of the fifth LNA 25 is connected to the fifth filter 70 to form a first diversity receiving channel, and the frequency band of the fifth filter 70 is the same as that of the second filter 40.

[0103] In some embodiments, the diversity receiving module further includes a sixth LNA 26 and a sixth filter 80, the input of the sixth LNA 26 is connected to the sixth filter 80 to form a second diversity receiving channel, and the frequency band of the sixth filter 80 is the same as the frequency band of the third filter 50.

[0104] In some embodiments, the radio frequency communication system further includes a diversity antenna group, which includes a second switch assembly 3000 and a second antenna module 4000. The output terminals of the fifth LNA 25 and the sixth LNA 26 are connected to the radio frequency chip. The fifth filter 70 and the sixth filter 80 are connected to the second antenna module 4000 through the second switch assembly 3000.

[0105] Figure 8 shows another radio frequency communication system provided in an embodiment of this application. The radio frequency communication system is described below with reference to Figure 8.

[0106] The radio frequency communication system provided in this application includes a first PA11, a first LNA21, a second LNA22, a fifth switch 500, a sixth switch 600, a seventh switch 700, a first filter 30, and a second filter 40. The fifth switch 500 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 503 of the fifth switch is connected to either the first switching terminal 501 or the second switching terminal of the fifth switch. The sixth switch 600 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 603 of the sixth switch is connected to either the first switching terminal 601 or the second switching terminal of the seventh switch. The seventh switch 700 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 703 of the seventh switch is connected to either the first switching terminal 701 or the second switching terminal 702 of the seventh switch.

[0107] The first filter 30 is connected to the connection terminal 703 of the seventh switch, the first switching terminal 501 of the fifth switch is connected to the first switching terminal 701 of the seventh switch, the input terminal of the second LNA 22 is connected to the second switching terminal 702 of the seventh switch, the output terminal of the first PA11 is connected to the connection terminal 503 of the fifth switch, the first switching terminal 601 of the sixth switch is connected to the second switching terminal 502 of the fifth switch, the input terminal of the first LNA 21 is connected to the second switching terminal 602 of the sixth switch, and the second filter 40 is connected to the connection terminal 603 of the sixth switch.

[0108] It should be understood that the fifth switch 500 is used to switch the first transmit channel from the first PA11 to the first filter 30 and the second transmit channel from the first PA11 to the second filter 40, the sixth switch 600 is used to switch the second transmit channel from the first PA11 to the second filter 40 and the second receive channel from the second filter 40 to the first LNA 21, and the seventh switch 700 is used to switch the first transmit channel from the first PA11 to the first filter 30 and the first receive channel from the first filter 30 to the second LNA 22.

[0109] The radio frequency communication system provided in this application embodiment is the same as the radio frequency communication system shown in Figure 3. It supports TDD communication modes in the TX band and RX band under the original FDD communication mode, realizing flexible application of the radio frequency communication system spectrum. Some possible embodiments of the radio frequency communication system provided in this application embodiment are the same as the foregoing embodiments, and will not be repeated here.

[0110] Figure 9 shows another radio frequency communication system provided in an embodiment of this application. The following description of the radio frequency communication system is based on Figure 9.

[0111] The radio frequency communication system provided in this application includes a first PA11, a first LNA21, an eighth switch 800, a ninth switch 900, a first filter 30, and a second filter 40. The eighth switch 800 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 803 of the eighth switch is connected to either the first switching terminal 801 or the second switching terminal 802 of the eighth switch. The ninth switch 900 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 903 of the ninth switch is connected to either the first switching terminal 901 or the second switching terminal 902 of the ninth switch.

[0112] The first filter 30 is connected to the connection terminal 803 of the eighth switch, the output terminal of the first PA11 is connected to the first switching terminal 801 of the eighth switch, the first switching terminal 901 of the ninth switch is connected to the second switching terminal 802 of the eighth switch, the second filter 40 is connected to the second switching terminal 902 of the ninth switch, and the input terminal of the first LNA21 is connected to the connection terminal 903 of the ninth switch.

[0113] It should be understood that the eighth switch 800 is used to switch the first transmit channel from the first PA11 to the first transmit channel of the first filter 30 and the first receive channel from the first filter 30 to the first LNA 21, and the ninth switch 900 is used to switch the first receive channel from the first filter 30 to the first receive channel of the first LNA 21 and the second receive channel from the second filter 40 to the first LNA 21.

[0114] It should be noted that when the connection terminal 803 of the eighth switch is connected to the first switching terminal 801 of the eighth switch and the connection terminal 903 of the ninth switch is connected to the second switching terminal 902 of the ninth switch, the first transmit channel from the first PA11 to the first filter 30 and the second receive channel from the second filter 40 to the first LNA 21 can operate simultaneously in two frequency bands, that is, the radio frequency communication system supports operation in FDD Band 1 mode; at the same time, in the frequency band of the first filter 30, when the connection terminal 903 of the ninth switch is connected to the first switching terminal 901 of the ninth switch, the eighth switch 800 switches the first transmit channel from the first PA11 to the first filter 30 and the first receive channel from the first filter 30 to the first LNA 21 in different time slots, that is, the radio frequency communication system also supports TDD communication mode in the TX band.

[0115] The radio frequency communication system provided in this application embodiment adds an eighth switch 800 and a ninth switch 900, supporting TDD communication mode of the TX band in the original FDD communication mode, realizing flexible application of the spectrum of the radio frequency communication system.

[0116] In some embodiments, as shown in FIG9, the radio frequency communication system further includes a second PA12, a third LNA23, a fourth switch 400, and a third filter 50. The fourth switch 400 includes a connection terminal, a first switching terminal, and a second switching terminal. The connection terminal 403 of the fourth switch can be connected to either the first switching terminal 401 or the second switching terminal 402 of the fourth switch. The output terminal of the second PA12 is connected to the first switching terminal 401 of the fourth switch. The input terminal of the third LNA23 is connected to the second switching terminal 402 of the fourth switch. The third filter 50 is connected to the connection terminal 403 of the fourth switch. The fourth switch 400 can be used to switch the third transmit channel from the second PA12 to the third filter 50 and the third receive channel from the third filter 50 to the third LNA23.

[0117] It should be understood that the radio frequency communication system provided in this application embodiment also supports the TDD communication mode of the RX band, that is, it supports the fourth switch 400 to switch the third transmit channel from the second PA12 to the third transmit channel of the third filter 50 and the third receive channel from the third filter 50 to the third LNA23 in different time slots under the frequency band of the third filter 50.

[0118] In some embodiments, as shown in FIG9, the radio frequency communication system further includes an antenna group, which includes a first switching assembly 1000 and a first antenna module 2000. A first filter 30, a second filter 40, or a third filter 50 are connected to the first antenna module 2000 through the switching assembly.

[0119] In some embodiments, the first filter 30, the second filter 40, or the third filter 50 may each be connected to different antennas, or the first filter 30 and the second filter 40 may be connected to the same antenna, while the third filter 50 may be connected to different antennas. This application embodiment is not limited to this.

[0120] In some embodiments, the radio frequency communication system further includes a modem, the radio frequency chip is connected to the modem, and the input terminals of the first PA11, the second PA12, the output terminals of the first LNA21, the second LNA22, and the third LNA23 are connected to the radio frequency chip.

[0121] In some embodiments, the radio frequency communication system further includes a diversity receiving module, which includes a fourth LNA 24, a fifth LNA 25, a fourth filter 60, and a fifth filter 70. The input terminal of the fourth LNA 24 is connected to the fourth filter 60 to form a first diversity receiving channel, and the input terminal of the fifth LNA 25 is connected to the fifth filter 70 to form a second diversity receiving channel. The frequency band of the fourth filter 60 is the same as that of the first filter 30, and the frequency band of the fifth filter 70 is the same as that of the second filter 40.

[0122] In some embodiments, the diversity receiving module further includes a sixth LNA 26 and a sixth filter 80. The input terminal of the sixth LNA 26 is connected to the sixth filter 80 to form a third diversity receiving channel. The frequency band of the sixth filter 80 is the same as that of the third filter 50.

[0123] In some embodiments, the radio frequency communication system further includes a diversity antenna group, which includes a second switch assembly 3000 and a second antenna module 4000. The output terminals of the fourth LNA 24, the fifth LNA 25, and the sixth LNA 26 are connected to the radio frequency chip. The fourth filter 60, the fifth filter 70, and the sixth filter 80 are connected to the second antenna module 4000 through the second switch assembly 3000.

[0124] In some embodiments, the frequency band of the first filter 30 is 1920-1980MHz, the frequency band of the second filter 40 is 2110-2170MHz, and the frequency band of the third filter 50 is 1880-1920MHz, but the embodiments of this application are not limited thereto.

[0125] In some embodiments, the frequency band of the fourth filter 60 is 1920–1980 MHz, the frequency band of the fifth filter 70 is 2110–2170 MHz, and the frequency band of the sixth filter 80 is 1880–1920 MHz, but the embodiments of this application are not limited thereto.

[0126] In some embodiments, the total number of frequency bands used by the filters of the diversity receiving module is less than or equal to the total number of frequency bands used by the filters of the main receiving module. The main receiving module includes the aforementioned first PA11, first LNA21, second LNA22, first switch 100, first filter 30 and second filter 40. The main receiving module may also include the aforementioned second PA12, third LNA23, fourth switch 400 and third filter 50. The main receiving module may also include the aforementioned second switch 200, third switch 300, fifth switch 500, sixth switch 600, seventh switch 700, eighth switch 800 and ninth switch 900.

[0127] In some embodiments, the first switch 100, the second switch 200, the third switch 300, the fourth switch 400, the fifth switch 500, the sixth switch 600, the seventh switch 700, the eighth switch 800, or the ninth switch 900 are single-pole double-throw switches or multi-pole multi-throw switches, but the embodiments of this application are not limited thereto.

[0128] In some embodiments, the first switch assembly 1000 or the second switch assembly 3000 includes a single-pole double-throw switch or a multi-pole multi-throw switch, but the embodiments of this application are not limited thereto.

[0129] In some embodiments, the first switch component 1000 and the second switch component 3000 may also be connected to other frequency bands, and the embodiments of this application do not specifically limit this.

[0130] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0131] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0132] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0133] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0134] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0135] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0136] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A radio frequency communication system, characterized in that, include: A first power amplifier (PA), a first low-noise amplifier (LNA), a second LNA, a first switch, a first filter, and a second filter. The first switch includes a connection terminal, a first switching terminal, and a second switching terminal. The first filter is connected to the connection terminal of the first switch. The output terminal of the first PA is connected to the first switching terminal of the first switch. The input terminal of the first LNA is connected to the second switching terminal of the first switch. The first switch is used to connect the connection terminal of the first switch to the first switching terminal of the first switch, or to connect the connection terminal of the first switch to the second switching terminal of the first switch, so as to switch the first transmit channel from the first PA to the first filter and the first receive channel from the first filter to the first LNA. The second filter is connected to the input of the second LNA to form a second receiving channel.

2. The radio frequency communication system according to claim 1, characterized in that, The radio frequency communication system also includes a second switch and a third switch. The second switch includes a connection terminal, a first switching terminal, and a second switching terminal; the third switch includes a connection terminal, a first switching terminal, and a second switching terminal. The output terminal of the first PA is connected to the connection terminal of the second switch, the first switching terminal of the first switch is connected to the first switching terminal of the second switch, and the first switching terminal of the third switch is connected to the second switching terminal of the second switch. The input terminal of the second LNA is connected to the second switching terminal of the third switch, and the second filter is connected to the connection terminal of the third switch; The second switch is used to connect the connection terminal of the second switch to the first switching terminal of the second switch, or to connect the connection terminal of the second switch to the second switching terminal of the second switch, so as to switch the first transmission channel from the first PA to the first filter and the second transmission channel from the first PA to the second filter; The third switch is used to connect the connection terminal of the third switch to the first switching terminal of the third switch, or to connect the connection terminal of the third switch to the second switching terminal of the third switch, so as to switch the second transmit channel from the first PA to the second filter and the second receive channel from the second filter to the second LNA.

3. The radio frequency communication system according to claim 1 or 2, characterized in that, The radio frequency communication system further includes a first switching component and a first antenna module. The first filter and the second filter are connected to the first antenna module through the first switching assembly.

4. The radio frequency communication system according to claim 1, characterized in that, The radio frequency communication system further includes a diversity receiving module, which comprises a fourth LNA, a fifth LNA, a fourth filter, and a fifth filter. The input terminal of the fourth LNA is connected to the fourth filter to form a first diversity reception channel, and the input terminal of the fifth LNA is connected to the fifth filter to form a second diversity reception channel. The fourth filter has the same frequency band as the first filter, and the fifth filter has the same frequency band as the second filter.

5. The radio frequency communication system according to claim 1 or 2, characterized in that, The radio frequency communication system also includes a second PA, a third LNA, a third filter, and a fourth switch. The fourth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The output terminal of the second PA is connected to the first switching terminal of the fourth switch. The input terminal of the third LNA is connected to the second switching terminal of the fourth switch. The third filter is connected to the connection terminal of the fourth switch. The fourth switch is used to connect the connection terminal of the fourth switch to the first switching terminal of the fourth switch, or to connect the connection terminal of the fourth switch to the second switching terminal of the fourth switch, so as to switch the third transmit channel from the second PA to the third filter and the third receive channel from the third filter to the third LNA.

6. The radio frequency communication system according to claim 5, characterized in that, The radio frequency communication system further includes a first switching component and a first antenna module. The first filter, the second filter, and the third filter are connected to the first antenna module via the first switching assembly.

7. The radio frequency communication system according to claim 5, characterized in that, The radio frequency communication system further includes a diversity receiving module, which comprises a fourth LNA, a fifth LNA, a sixth LNA, a fourth filter, a fifth filter, and a sixth filter. The input terminal of the fourth LNA is connected to the fourth filter to form a first diversity reception channel, the input terminal of the fifth LNA is connected to the fifth filter to form a second diversity reception channel, and the input terminal of the sixth LNA is connected to the sixth filter to form a third diversity reception channel. The fourth filter has the same frequency band as the first filter, the fifth filter has the same frequency band as the second filter, and the sixth filter has the same frequency band as the third filter.

8. The radio frequency communication system according to claim 7, characterized in that, The radio frequency communication system also includes a second switch assembly and a second antenna module. The fourth filter, the fifth filter, and the sixth filter are connected to the second antenna module via the second switch assembly.

9. The radio frequency communication system according to any one of claims 1 to 8, characterized in that, The frequency band of the first filter is 1920–1980 MHz.

10. The radio frequency communication system according to any one of claims 1 to 8, characterized in that, The second filter operates in the frequency band of 2110–2170 MHz.

11. The radio frequency communication system according to any one of claims 1 to 10, characterized in that, The first switch is a single-pole double-throw switch or a multi-pole multi-throw switch.

12. The radio frequency communication system according to claim 5, characterized in that, The frequency band of the third filter is 1880–1920 MHz.

13. The radio frequency communication system according to any one of claims 1 to 12, characterized in that, The radio frequency communication system also includes a modem and a radio frequency chip. The input terminal of the first PA, the output terminal of the first LNA, and the output terminal of the second LNA are connected to the radio frequency chip, and the radio frequency chip is connected to the modem.

14. A radio frequency communication system, characterized in that, include: First power amplifier PA, first low noise amplifier LNA, fifth switch, sixth switch, first filter and second filter, The fifth switch includes a connection terminal, a first switching terminal, and a second switching terminal; the sixth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The output terminal of the first PA is connected to the connection terminal of the fifth switch; the first filter is connected to the first switching terminal of the fifth switch; the first switching terminal of the sixth switch is connected to the second switching terminal of the fifth switch; the input terminal of the first LNA is connected to the second switching terminal of the sixth switch; and the second filter is connected to the connection terminal of the sixth switch. The fifth switch is used to connect the connection terminal of the fifth switch to the first switching terminal of the fifth switch, or to connect the connection terminal of the fifth switch to the second switching terminal of the fifth switch, so as to switch the first transmission channel from the first PA to the first filter and the second transmission channel from the first PA to the second filter. The sixth switch is used to connect the connection terminal of the sixth switch to the first switching terminal of the sixth switch, or to connect the connection terminal of the sixth switch to the second switching terminal of the sixth switch, so as to switch the second transmit channel from the first PA to the second filter and the first receive channel from the second filter to the first LNA.

15. The radio frequency communication system according to claim 14, characterized in that, The radio frequency communication system also includes a seventh switch and a second LNA. The seventh switch includes a connection terminal, a first switching terminal, and a second switching terminal. The first filter is connected to the connection terminal of the seventh switch. The first switching terminal of the fifth switch is connected to the first switching terminal of the seventh switch. The second LNA is connected to the second switching terminal of the seventh switch. The seventh switch is used to connect the connection terminal of the seventh switch to the first switching terminal of the seventh switch, or to connect the connection terminal of the seventh switch to the second switching terminal of the seventh switch, so as to switch the first transmit channel from the first PA to the first filter and the second receive channel from the first filter to the second LNA.

16. The radio frequency communication system according to claim 14 or 15, characterized in that, The radio frequency communication system further includes a first switching component and a first antenna module. The first filter and the second filter are connected to the first antenna module through the first switching assembly.

17. The radio frequency communication system according to claim 14, characterized in that, The radio frequency communication system further includes a diversity receiving module, which comprises a fifth LNA and a fifth filter. The input terminal of the fifth LNA is connected to the fifth filter to form the first diversity reception channel; The frequency band of the fifth filter is the same as that of the second filter.

18. The radio frequency communication system according to claim 14 or 15, characterized in that, The radio frequency communication system also includes a second PA, a third LNA, a third filter, and a fourth switch. The fourth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The output terminal of the second PA is connected to the first switching terminal of the fourth switch. The input terminal of the third LNA is connected to the second switching terminal of the fourth switch. The third filter is connected to the connection terminal of the fourth switch. The fourth switch is used to connect the connection terminal of the fourth switch to the first switching terminal of the fourth switch, or to connect the connection terminal of the fourth switch to the second switching terminal of the fourth switch, so as to switch the third transmit channel from the second PA to the third filter and the third receive channel from the third filter to the third LNA.

19. The radio frequency communication system according to claim 18, characterized in that, The radio frequency communication system further includes a first switching component and a first antenna module. The first filter, the second filter, and the third filter are connected to the first antenna module via the first switching assembly.

20. The radio frequency communication system according to claim 18, characterized in that, The radio frequency communication system further includes a diversity receiving module, which comprises a fourth LNA, a fifth LNA, a sixth LNA, a fourth filter, a fifth filter, and a sixth filter. The input terminal of the fourth LNA is connected to the fourth filter to form a first diversity reception channel, the input terminal of the fifth LNA is connected to the fifth filter to form a second diversity reception channel, and the input terminal of the sixth LNA is connected to the sixth filter to form a third diversity reception channel. The fourth filter has the same frequency band as the first filter, the fifth filter has the same frequency band as the second filter, and the sixth filter has the same frequency band as the third filter.

21. The radio frequency communication system according to claim 20, characterized in that, The radio frequency communication system also includes a second switch assembly and a second antenna module. The fourth filter, the fifth filter, or the sixth filter is connected to the second antenna module via the second switching assembly.

22. The radio frequency communication system according to any one of claims 14 to 21, characterized in that, The frequency band of the first filter is 1920–1980 MHz.

23. The radio frequency communication system according to any one of claims 14 to 21, characterized in that, The second filter operates in the frequency band of 2110–2170 MHz.

24. The radio frequency communication system according to any one of claims 14 to 23, characterized in that, The fifth or sixth switch is a single-pole double-throw switch or a multi-pole multi-throw switch.

25. The radio frequency communication system according to claim 18, characterized in that, The frequency band of the third filter is 1880–1920 MHz.

26. A radio frequency communication system, characterized in that, include: First power amplifier PA, first low noise amplifier LNA, eighth switch, ninth switch, first filter and second filter, The eighth switch includes a connection terminal, a first switching terminal, and a second switching terminal; the ninth switch includes a connection terminal, a first switching terminal, and a second switching terminal. The first filter is connected to the connection terminal of the eighth switch, the output terminal of the first PA is connected to the first switching terminal of the eighth switch, the first switching terminal of the ninth switch is connected to the second switching terminal of the eighth switch, the second filter is connected to the second switching terminal of the ninth switch, and the input terminal of the first LNA is connected to the connection terminal of the ninth switch. The eighth switch is used to connect the connection terminal of the eighth switch to the first switching terminal of the eighth switch, or to connect the connection terminal of the eighth switch to the second switching terminal of the eighth switch, so as to switch the first transmit channel from the first PA to the first filter and the first receive channel from the first filter to the first LNA. The ninth switch is used to connect the connection terminal of the ninth switch to the first switching terminal of the ninth switch, or to connect the connection terminal of the ninth switch to the second switching terminal of the ninth switch, so as to switch the first receiving channel of the first filter to the first receiving channel of the first LNA and the second receiving channel of the second filter to the first LNA.

27. The radio frequency communication system according to claim 26, characterized in that, The eighth switch or the ninth switch is a single-pole double-throw switch or a multi-pole multi-throw switch.

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