Radio frequency system and communication device

Abstract

The invention relates to a radio frequency system and communication equipment. The radio frequency system comprises a transceiver; the input end of the power amplifier is connected with a first transmitting port of the transceiver, and the output end of the power amplifier is connected with a first end of the first switch; the other first end of the first switch is connected with the second transmitting port; the second end of the first switch is connected with the antenna through the filtering unit; the transceiver is configured to obtain the target transmitting power of transmitting an uplink signal by the radio frequency system; under the condition that the target transmitting power is greater than the maximum output power of the transceiver, controlling the first switch to conduct a path between the power amplifier and the filtering unit; and under the condition that the target transmitting power is smaller than the maximum output power, the first switch is controlled to conduct the path between the second transmitting port and the filtering unit, so that the communication quality can be improved in a low-power scene, and the radio frequency power consumption can also be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radio frequency technology, in particular to a radio frequency system and a communication device. BACKGROUND

[0002] With the rapid development of mobile terminals, users have higher and higher requirements for the communication quality of radio frequency systems, especially for communication endurance. If the radio frequency power consumption is large, heat will be generated, and the communication quality will be poor, which will seriously affect the user's communication experience.

[0003] In order to improve communication endurance, in related technical solutions, for a small power scene, mainly through a switch to skip the PA and the filter, so that in a small power scene, the radio frequency power is very low, to save the radio frequency power consumption. But in this scenario, the communication quality is poor. SUMMARY

[0004] The embodiments of the present application provide a radio frequency system and a communication device, which can improve the communication quality in a small power scene while saving the radio frequency power consumption.

[0005] The first aspect provides a radio frequency system, comprising: a transceiver, a power amplifier, a first switch, and a filter unit; wherein,

[0006] The transceiver comprises a first transmit port and a second transmit port for providing an uplink signal;

[0007] The input end of the power amplifier is connected with the first transmit port, and the output end of the power amplifier is connected with a first end of the first switch; the other first end of the first switch is connected with the second transmit port; the second end of the first switch is connected with the first end of the filter unit respectively, and the second end of the filter unit is used for connecting with an antenna; wherein,

[0008] The transceiver is configured to:

[0009] obtain a target transmit power of the radio frequency system for transmitting the uplink signal;

[0010] In the case that the target transmit power is greater than the maximum output power of the transceiver, the first switch is controlled to turn on the path between the power amplifier and the filter unit to turn on a first transmit chain;

[0011] In the case that the target transmit power is less than the maximum output power of the transceiver, the first switch is controlled to turn on the path between the second transmit port and the filter unit to turn on a second transmit chain.

[0012] The second aspect provides a communication device, comprising: the radio frequency system as described above.

[0013] The radio frequency system and the communication device, comprising a transceiver, a power amplifier, a first switch and a filter unit, wherein the first switch is arranged to connect the transceiver, the power amplifier and the filter unit, and the transceiver is arranged to select the first transmission link according to the comparison result of the target transmission power of the uplink communication and the maximum output power of the transceiver. In this way, the uplink signal can be amplified by the power amplifier to increase the transmission power of the uplink signal, so as to be suitable for a high-power communication scenario.

[0014] In addition, the transceiver is further arranged to select the second transmission link according to the comparison result, and the second transmission link is arranged to bypass the power amplifier to avoid the current consumption of the power amplifier to save the radio frequency power consumption and improve the communication endurance of the user. In addition, the filter unit is arranged on the second transmission link to filter the uplink signal to filter out the spurious signal and to suppress the nonlinear spurious wave generated by the transceiver to a certain extent to ensure the communication quality of the radio frequency system in a low-power scenario. In addition, the on-off state of the first switch is controlled by the transceiver, and the on-off state of the first switch does not need to be controlled by an additional controller, which reduces the cost and the occupied space of the radio frequency system, and is beneficial to the miniaturization design of the product. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 One of the structural block diagrams of the radio frequency system in an embodiment;

[0018] Figure 2 The second structural block diagram of the radio frequency system in an embodiment;

[0019] Figure 3 The third structural block diagram of the radio frequency system in an embodiment;

[0020] Figure 4 The fourth structural block diagram of the radio frequency system in an embodiment;

[0021] Figure 5 A flowchart illustrating the steps involved in configuring a transceiver in one embodiment;

[0022] Figure 6 A flowchart illustrating the corresponding steps for configuring the transceiver in another embodiment;

[0023] Figure 7 This is a block diagram of a Wi-Fi system in one embodiment;

[0024] Figure 8 This is a block diagram of a Wi-Fi system in another embodiment;

[0025] Figure 9 A block diagram of a communication device in one embodiment. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first transmission link may be referred to as a second transmission link, and similarly, a second transmission link may be referred to as a first transmission link. Both the first transmission link and the second transmission link are transmission links, but they are not the same transmission link.

[0028] like Figure 1 As shown in the illustration, this application provides a radio frequency (RF) system, which can be, for example, a cellular mobile system. The RF system may include a transceiver 110, a power amplifier 120, a first switch 130, and a filter unit 140.

[0029] Transceiver 110 is configured with a first transmit port RF1 and a second transmit port RF2. The first transmit port RF1 and the second transmit port RF2 can be used to output uplink signals, respectively. In this embodiment, the first transmit port RF1 and the second transmit port RF2 can be used to provide the uplink signal.

[0030] Uplink signals may include one of the following: 2G GSM signals, 3G CNMA signals, 4G LTE signals, 5G NR signals, and Wi-Fi signals.

[0031] The input end of the power amplifier 120 is connected with the first transmitting port RF1, and the output end of the power amplifier 120 is connected with a first end of the first switch 130. The other first end of the first switch 130 is connected with the second transmitting port RF2. The second end of the first switch 130 is respectively connected with the first end of the filter unit 140, and the second end of the filter unit 140 is used for being connected with the antenna. It can be understood that the first switch 130 can be used for selecting the conduction of the paths between the first transmitting port RF1 and the filter unit and the paths between the second transmitting port RF2 and the filter unit.

[0032] The transceiver 110 can modulate the signal to output an uplink signal. The uplink signal is amplified by the power amplifier 120 and then transmitted to the filter unit for filtering processing. The uplink signal after the filtering processing is radiated to the free space by the antenna. Alternatively, the uplink signal is directly transmitted to the filter unit through the first switch 130, and the uplink signal after the filtering processing is radiated to the free space by the antenna.

[0033] For example, the transceiver 110 can be a radio frequency integrated circuit (RFIC), and the corresponding uplink signal includes but is not limited to a 2G GSM signal, a 3G CNMA signal, a 4G LTE signal, a 5G NR signal, and the like.

[0034] Optionally, the transceiver 110 can also perform signal processing on the downlink signal received by one or more antennas, including but not limited to frequency conversion, demodulation, and the like.

[0035] In an optional embodiment, the transceiver 110 can be a Wi-Fi chip, and the corresponding uplink signal includes but is not limited to at least one of a Wi-Fi 2.4G frequency band signal, a Wi-Fi 5G frequency band signal, and a Wi-Fi 6G frequency band signal. The Wi-Fi chip can be responsible for processing Wi-Fi data packets, executing Wi-Fi protocols, and managing Wi-Fi connections, including functions such as encoding, decoding, routing, QoS (quality of service) management, and the like. In an optional embodiment, the transceiver 110 can also be a WCN chip.

[0036] The transceiver 110 is configured to: obtain a target transmitting power of the radio frequency system for transmitting an uplink signal; in a case where the target transmitting power is greater than or equal to the maximum output power of the transceiver 110, control the first switch 130 to conduct a path between the power amplifier 120 and the filter unit to conduct the first transmitting link; and in a case where the target transmitting power is less than the maximum output power of the transceiver 110, control the first switch 130 to conduct a path between the second transmitting port RF2 and the filter unit to conduct the second transmitting link. It should be noted that in the embodiments of the present application, the first transmitting link and the second transmitting link are conducted in time.

[0037] The output power capability of the first transmission port RF1 and the second transmission port RF2 configured by the transceiver 110 is limited, and the output power of the uplink signal is within a certain range, that is, the first transmission port RF1 and the second transmission port RF2 of the transceiver 110 have a maximum output power. The power range of the uplink signal output by the first transmission port RF1 and the second transmission port RF2 is the same, and they have the same maximum output power, which can also be referred to as the maximum output power of the transceiver 110. The frequency or frequency band of the uplink signal output by the first transmission port RF1 and the second transmission port RF2 is the same, and the power of the uplink signal can be the same or different.

[0038] The transceiver 110 can interact with the base station to obtain the target transmission power of the radio frequency system for transmitting the uplink signal, which can be the required power of the current radio frequency system for transmitting the uplink signal.

[0039] The transceiver 110 can compare the obtained target transmission power with the maximum output power of the radio frequency transceiver, and control the on-off state of the first switch 130 according to the comparison result to select a transmission link suitable for the target transmission power to transmit the uplink signal.

[0040] For example, when the target transmission power is greater than or equal to the maximum output power of the transceiver 110, the transceiver 110 can control the first switch 130 to turn on the path between the power amplifier 120 and the filter unit to turn on the first transmission link.

[0041] When the target transmission power is less than the maximum output power of the transceiver 110, the first switch 130 is controlled to turn on the path between the second transmission port RF2 and the filter unit 140 to turn on the second transmission link.

[0042] Among them, there are more radio frequency devices on the first transmission link than on the second transmission link. The first transmission link is provided with a power amplifier 120, a first switch 130 and a filter unit 140. The second transmission link is provided with a first switch 130 and a filter unit 140. In this way, the second transmission link is less than the first transmission link without a power amplifier 120.

[0043] Since the target transmission power is less than the maximum output power of the transceiver 110, the output power of the uplink signal of the transceiver 110 can meet the power requirement of the uplink signal, and in this case, the transmission link does not need to amplify the power of the uplink signal to meet the communication requirement, therefore, the transceiver 110 can control the first switch 130 to turn on the second transmission link.

[0044] In the embodiments of the present application, the working mode in which the first transmission link is turned on is referred to as the first power mode, and the working mode in which the second transmission link is turned on is referred to as the second power mode. In the first power mode, the uplink signal output by the radio frequency system can be subjected to power amplification processing by the power amplifier 120, then subjected to filtering processing by the filtering unit 140, and then radiated to the free space via the antenna. In the first power mode, the output power of the uplink signal radiated to the free space by the antenna is the first power, which is relatively large and can be suitable for a high-power communication scenario. In the second power mode, the uplink signal output by the radio frequency system can skip the power amplifier 120, and then be subjected to filtering processing by the filtering unit 140, and then be radiated to the free space via the antenna. In the second power mode, the output power of the uplink signal output by the antenna is the second power, which is relatively small compared with the first power and can be suitable for a low-power communication scenario.

[0045] In the embodiments, the radio frequency system includes the transceiver 110, the power amplifier 120, the first switch 130, and the filtering unit 140. By setting the connection relationship between the first switch 130 and the transceiver 110, the power amplifier 120, and the filtering unit 140, the transceiver 110 can select to turn on the first transmission link according to the comparison result of the target transmission power of the uplink communication and the maximum output power of the transceiver 110. In this way, the uplink signal can be subjected to power amplification by the power amplifier 120 to increase the transmission power of the uplink signal, so as to be suitable for a high-power communication scenario.

[0046] In addition, the transceiver 110 can also select to turn on the second transmission link according to the comparison result. The second transmission link is turned on to skip the power amplifier 120, so that the current consumption of the power amplifier 120 can be avoided to achieve the purpose of saving radio frequency power consumption and improving the communication endurance of the user. In addition, the filtering unit is arranged on the second transmission link, which can filter the uplink signal to filter out the spurious signal, so as to suppress the nonlinear spurious wave generated by the transceiver 110 to a certain extent, so as to ensure the communication quality of the radio frequency system in a low-power scenario. In addition, the on-off state of the first switch 130 in the embodiments of the present application is controlled by the transceiver 110, so that an additional controller is not needed to control the on-off state of the first switch 130, which can reduce the cost and the occupied space of the radio frequency system, and is conducive to the miniaturization design of the product.

[0047] In an exemplary embodiment, in order to balance the transmission power and the radio frequency power consumption, before the transceiver 110 controls the first switch 130 to turn on the second radio frequency link, the transceiver 110 can further acquire the radio frequency power consumption of the first transmission link and the second transmission link, and then determine whether to turn on the second transmission link according to the radio frequency power consumption of the first transmission link and the radio frequency power consumption of the second transmission link.

[0048] The transceiver is also configured to:

[0049] acquire a plurality of switching powers;

[0050] respectively acquire the radio frequency power consumption of the first transmission link and the radio frequency power consumption of the second transmission link for each switching power in the case that the target transmission power is less than the maximum output power of the transceiver;

[0051] determine the target switching power according to the acquired radio frequency power consumption of the first transmission link and the radio frequency power consumption of the second transmission link;

[0052] control the first switch to turn on the path between the second transmission port and the filter unit in the case that the target transmission power is less than the target switching power.

[0053] In actual application, the transceiver 110 can meet the power requirement of the uplink signal in the case that the target transmission power is less than the maximum output power of the transceiver 110 without considering the radio frequency power consumption caused by the current consumption of the power amplifier 120. In this case, in order to further reduce the radio frequency power consumption of the radio frequency system, the transceiver 110 can set a plurality of switching powers in the case that the power requirement is met. Each switching power is less than the maximum output power of the transceiver 110 and greater than the target transmission power. For example, if the maximum output power is m dBm and the target transmission power is n dBm, where n is less than m, the switching power a dBm is in the range of n dBm < a dBm < m dBm. For example, the difference between adjacent two switching powers can be set to 1 dBm, for example, the range of the plurality of switching powers can be set to n dBm < … < a-1 dBm < a dBm < a+1 dBm < … < m dBm.

[0054] In the embodiments of the present application, the target transmission power and the switching power are both the output power of the radio frequency system, and the output power can be the output power of the antenna end.

[0055] For example, if the current communication uses the first transmission link for communication, the output power can also be the output power of the first transmission link, and if the current communication uses the second transmission link for communication, the output power can be the output power of the second transmission link. It should be noted that, since the first transmission link and the second transmission link are provided with corresponding radio frequency devices and radio frequency traces connected to the radio frequency devices, and the first transmission link and the second transmission link themselves have link insertion loss, the output power of the first transmission link is less than the output power of the first transmission port RF1, and the output power of the second transmission link is less than the output power of the second transmission port RF2.

[0056] The transceiver 110 can traverse to acquire the radio frequency power consumption of the first transmission link and the radio frequency power consumption of the second transmission link under each switching power. For example, the transceiver 110 can turn on the first transmission link, control the output of the uplink signal through the first transmission port RF1, so that the output power of the first transmission link is the first switching power, and in this condition, the radio frequency power consumption of the first transmission link is acquired. The radio frequency power consumption is positively correlated with the working current. For example, in this condition, the working current of the first transmission link can be acquired by testing, and then the radio frequency power consumption thereof can be acquired correspondingly.

[0057] Correspondingly, the transceiver 110 can turn on the second transmission link, control the output of the uplink signal through the second transmission port RF2, so that the output power of the second transmission link is the first switching power, and in this condition, the radio frequency power consumption of the second transmission link is acquired.

[0058] In this way, the first radio frequency power consumption of the first transmission link and the second radio frequency power consumption of the second transmission link can be acquired correspondingly under each switching power.

[0059] The transceiver 110 can determine the target switching power based on the acquired first radio frequency power consumption of the first transmission link and the second radio frequency power consumption of the second transmission link. For example, the transceiver 110 compares the size of the first radio frequency power consumption and the second radio frequency power consumption for each switching power, and takes the switching power corresponding to the first radio frequency power consumption greater than or equal to the second radio frequency power consumption as the target switching power. It can be understood that under the target switching power, the radio frequency power consumption of the first transmission link is greater than or equal to the radio frequency power consumption of the second transmission link.

[0060] After determining the target switching power, in the case that the target transmission power is less than the target switching power, the transceiver 110 can control the first switch 130 to turn on the path between the second transmission port RF2 and the filter unit 140.

[0061] In this embodiment, the transceiver 110 can acquire the RF power consumption of the first transmit link and the second transmit link respectively for multiple set switching power levels, and determine the target switching power accordingly. Then, when the target transmit power is less than the target switching power, the first switch 130 can be controlled to open the path between the second transmit port RF2 and the filter unit 140, thereby opening the second transmit link and bypassing the power amplifier 120. This avoids the current consumption of the power amplifier 120, achieving the purpose of saving RF power consumption and improving the user's communication endurance. Furthermore, the RF system provided in this embodiment can also avoid the special case where the RF power consumption of the second transmit link is higher than that of the first transmit link, further achieving the purpose of saving RF power consumption and improving the endurance of the RF system. In practical applications, such special cases include, but are not limited to, the situation where the second transmit port RF2 outputs its uplink signal at maximum output power, and the first transmit port RF1 outputs its uplink signal at other power (e.g., less than the maximum output power).

[0062] In an exemplary embodiment, transceiver 110 is further configured to: for each switching power, if the RF power consumption of the first transmit link is less than the RF power consumption of the second transmit link, control the first switch to turn on the path between the power amplifier and the filter unit.

[0063] During the process of traversing each switching power, it was found through comparison that the RF power consumption of the first transmission link is less than that of the second transmission link. In this case, the transceiver 110 can control the first switch 130 to turn on the path between the power amplifier 120 and the filter unit, so as to turn on the first RF link for uplink signal transmission processing.

[0064] In this embodiment, the transceiver 110 can comprehensively consider the RF power consumption of the first transmission link and the RF power consumption of the second transmission link, and select the transmission link with lower RF power consumption as the target transmission link for the RF system to transmit the uplink signal. In this way, the purpose of saving RF power consumption can be achieved, and the battery life of the RF system can be improved.

[0065] like Figure 2 As shown, in an exemplary embodiment, based on any of the foregoing embodiments, the radio frequency system can also support the transmission of multiple uplink signals, each with a different frequency band.

[0066] The radio frequency (RF) system may include multiple filtering units 140. Each filtering unit 140 can support filtering of the RF signals output from the first transmit port RF1 or the second transmit port RF2, filtering out a portion of the signal and allowing signal output within a preset frequency band. It is understood that each filtering unit 140 has a different passband. The passband of a filtering unit 140 is the frequency range of signals that the filtering unit 140 allows to pass through. The frequency range of each uplink signal at least partially overlaps with the passband of the corresponding filtering unit 140.

[0067] The first switch 130 includes two first terminals and multiple second terminals, wherein each of the multiple second terminals of the first switch 130 is connected to a filter unit 140. Each filter unit 140 can be connected to an antenna.

[0068] like Figure 3 As shown, in an exemplary embodiment, multiple filter units can be selectively connected to the same antenna in a time-division multiplexing manner. The radio frequency system may further include a second switch 150 for switching the antenna. Multiple first terminals of the second switch 150 are respectively connected to the second terminals of multiple filter units 140; the second terminals of the second switch 150 are used to connect to the antenna. The second switch can be used to select and open the path between the target filter unit and the antenna.

[0069] The second switch 150 can also be connected to the transceiver 110, and its on / off state is controlled by the transceiver 110. For example, the transceiver 110 can control the on / off state of the second switch 150 to open the path between the target filter unit and the antenna.

[0070] In an optional embodiment, each filtering unit may be connected to a corresponding antenna, and each filtering unit is connected to a different antenna.

[0071] In one exemplary embodiment, the first switch 130 is a DPMT switch, where M is a positive integer greater than or equal to 2. M is greater than or equal to the number of filter units 140.

[0072] The first switch 130 can select the path between the power amplifier 120, the second transmit port RF2, and the target filter unit to achieve target frequency band selection. The target filter unit is one of multiple filter units 140. The passband of the target filter unit at least partially overlaps with the frequency range of the uplink signal.

[0073] The transceiver 110 is also configured to: control the first switch to turn on the path between the power amplifier and the target filter unit according to the frequency band of the uplink signal, or control the first switch to turn on the path between the second transmit port and the target filter unit according to the frequency band of the uplink signal.

[0074] In the interaction with the base station, the radio frequency signal can obtain the frequency band of the uplink signal currently required for communication, for example, band A. After the radio frequency signal obtains the frequency band, the radio frequency signal compares the transmit power corresponding to the uplink signal with the maximum transmit power of the radio frequency transceiver 110. If the target transmit power is greater than the maximum output power of the transceiver 110, the first switch 130 is controlled to turn on the path between the power amplifier 120 and the target filter unit, so as to turn on the first transmit link. Alternatively, if the target transmit power is less than the maximum output power of the transceiver 110, the first switch 130 is controlled to turn on the path between the second transmit port RF2 and the target filter unit, so as to turn on the second transmit link. If the frequency band of the uplink signal currently required for communication is band A, the filter unit 140 with a passband of band A can be used as the target filter unit.

[0075] In the embodiments of the present application, the radio frequency system can support the transmission processing of multiple uplink signals. For each uplink signal, a corresponding first transmit link and a second transmit link can be set. The first switch 130 can be used to select the first transmit link and the second transmit link, and can also be used to select the target filter unit to achieve the selection of the target frequency band. That is, one switch can be used for the selection of the transmit link and the selection of the target frequency band, which can further reduce the cost and reduce the occupied area of the radio frequency system.

[0076] Please continue to refer to Figure 3 In an exemplary embodiment, the radio frequency system can support the transmission of radio frequency signals of multiple different frequency bands. The frequency band mode of different radio frequency signals can include FDD mode and TDD mode. Time Division Duplexing (TDD) and Frequency Division Duplexing (FDD) are two main duplex communication technologies. In time division duplexing TDD, the transceiver shares one radio frequency point (i.e., the same frequency), and the uplink and downlink use different time slots for communication, that is, the uplink and downlink transmission is realized by time division. In frequency division duplexing FDD, the transceiver uses different radio frequency points (i.e., two independent frequencies) to perform uplink and downlink transmission. For example, the two frequencies can be symmetrical, and a certain guard bandwidth is required to avoid interference.

[0077] The filter devices used for filtering different frequency band modes of radio frequency signals are not the same. In an exemplary embodiment, the filter unit corresponding to the FDD mode radio frequency signal can include a duplexer or a multiplexer. The filter unit corresponding to the TDD mode radio frequency signal can include a filter.

[0078] For example, to facilitate the description, the radio frequency system can support cellular signals such as band A, band B, band C, band D, and band E. For example, the band modes of the band A, band B, and band C are TDD modes, and the band modes of the band D and band E are FDD modes. The radio frequency system can include a first filter 141, a second filter 142, a third filter 143, a first duplexer 144, and a second duplexer 145. The first switch 130 is a DT5P switch, and the two first ends of the DT5P switch are respectively connected to the output end of the power amplifier 120 and the second transmission port RF2. The five second ends of the DT5P switch are respectively connected to the first end of the first filter 141, the second filter 142, the third filter 143, the first duplexer 144, and the second duplexer 145.

[0079] If the frequency band of the uplink signal currently required for communication is band A, and the target transmission power is greater than the maximum output power of the transceiver 110, the transceiver 110 can control the DT5P switch to conduct the path between the contacts 1 and 3, and make the contact 2 in the disconnected state, and control the second switch to conduct the path between the contacts 1 and 6. The uplink signal passes through the power amplifier 120, the DP5P switch, the first filter 141, the second switch 150, and reaches the antenna. If the target transmission power is less than the maximum output power of the transceiver 110, the transceiver 110 can control the DT5P switch to conduct the path between the contacts 2 and 3, and make the contact 1 in the disconnected state, and control the second switch 150 to conduct the path between the contacts 1 and 6. The uplink signal passes through the DP5P switch, the first filter 141, the second switch 150, and reaches the antenna.

[0080] If the frequency band of the uplink signal currently required for communication is band D, and the target transmission power is greater than the maximum output power of the transceiver 110, the transceiver 110 can control the DT5P switch to conduct the path between the contacts 1 and 6, and make the contact 2 in the disconnected state, and control the second switch to conduct the path between the contacts 4 and 6. The uplink signal passes through the power amplifier 120, the DP5P switch, the first duplexer 144, the second switch 150, and reaches the antenna. If the target transmission power is less than the maximum output power of the transceiver 110, the transceiver 110 can control the DT5P switch to conduct the path between the contacts 2 and 6, and make the contact 1 in the disconnected state, and control the second switch 150 to conduct the path between the contacts 4 and 6. The uplink signal passes through the DP5P switch, the first duplexer 144, the second switch 150, and reaches the antenna.

[0081] In the embodiment of the present application, the radio frequency system can support the transmission processing of multiple uplink signals, and can also support the uplink signals in TDD mode and FDD mode. In addition, for each uplink signal, a corresponding first transmission link and a second transmission link can be set, wherein the first switch 130 can be used to select the conduction of the first transmission link and the second transmission link, and can also be used to select the conduction of the first target filter unit to realize the selection of the target frequency band, that is, one switch can be used for the selection of the transmission link and the selection of the target frequency band, which can further reduce the cost and can reduce the occupied area of the radio frequency system.

[0082] As shown in Figure 4 In an exemplary embodiment, the transceiver 110 further includes a control port CL, wherein the control port CL is connected with the first switch 130 and the second switch 150 respectively. For example, the control port CL can be connected with the first switch 130 and the second switch 150 through the MIPI bus, and can be used to control the on-off state of the first switch 130 and the second switch 150.

[0083] In the embodiment, the on-off state of the first switch 130 and the second switch 150 is controlled by the transceiver 110, and an additional controller is not needed to control the on-off state of the first switch 130 and the second switch 150, which can reduce the cost and the occupied space of the radio frequency system, and is beneficial to the miniaturization design of the product.

[0084] In an exemplary embodiment, the setting of the maximum output power of the transceiver 110 is related to the communication mode of the uplink signal. For example, the transceiver 110 is further configured to determine the communication mode of the uplink signal, and to determine the maximum output power of the transceiver 110 according to the communication mode.

[0085] The communication mode includes one of 2G GSM mode, 3G WCDMA mode, 4G TLE mode, 5G NR mode and Wi-Fi mode. The maximum output power corresponding to the 2G GSM mode, the 3G WCDMA mode, the 4G TLE mode and the Wi-Fi mode is different. In an optional embodiment, the maximum output power corresponding to the 2G GSM mode, the 3G WCDMA mode, the 5G NR mode and the Wi-Fi mode is different.

[0086] For example, the communication mode of the uplink signal is 2G GSM mode, and the maximum output power of the transceiver 110 (e.g., a radio frequency chip) is 9 dBm. The communication mode of the uplink signal is 3G WCDMA mode, and the maximum output power of the transceiver 110 (e.g., a radio frequency chip) is 3 dBm. The communication mode of the uplink signal is 4G TLE or 5G NR mode, and the maximum output power of the transceiver 110 (e.g., a radio frequency chip) is 6 dBm. The communication mode of the uplink signal is Wi-Fi mode, and the maximum output power of the transceiver 110 (e.g., a Wi-Fi chip) can be 16 dBm.

[0087] The maximum output power of the transceiver 110 corresponding to each of the above communication modes is not limited to the above examples, but can be set according to the hardware structure, model, and frequency bands (e.g., low frequency, medium frequency, high frequency, or ultra-high frequency, Wi-Fi mode) of the transceiver 110 under different communication modes. In the embodiments of the present application, the setting of each maximum output power is not specifically limited.

[0088] The radio frequency system provided in the embodiments can be applied to a cellular mobile system, can be suitable for each communication mode of the cellular mobile system, can improve the application range of the radio frequency system, and can be suitable for the full frequency range of the cellular mobile system.

[0089] In an exemplary embodiment, the working principle of the radio frequency system, such as a cellular mobile system, is described in combination with the radio frequency system as shown in Figure 4

[0090] As shown in Figure 5 , the transceiver 110 can be configured to perform the following steps:

[0091] Step 1: The transceiver can detect the cellular working mode of the radio frequency system;

[0092] Step 2: The transceiver can detect whether the radio frequency system works in 2G GSM, 3G WCDMA mode, 4G TLE / 5G NR mode, and if not, return to the previous step to recheck the cellular working mode of the radio frequency system;

[0093] Step 3: If the radio frequency system works in 2G GSM mode (e.g., the uplink signal is a 2G GSM signal), continue to check whether the target transmission power is less than the maximum output power (e.g., 9 dBm) of the transceiver. If yes, the transceiver controls the DPMT switch to turn on the second transmission link, that is, the Bypass PA link, and the uplink signal directly enters the DPMT switch and is transmitted to the antenna through the filter unit; if not, the transceiver controls the DPMT switch to turn on the first transmission link, and the uplink signal enters the power amplifier and the DPMT switch and is transmitted to the antenna through the filter unit.

[0094] ​Step four: if the radio frequency system works in 3G WCDMA mode (for example, the uplink signal is a 3G WCDMA signal), continue to check whether the target transmit power is less than the maximum output power of the transceiver (for example, 3dBm). If yes, the transceiver controls the DPMT switch to turn on the second transmit chain, that is, the Bypass PA chain, and the uplink signal directly enters the DPMT switch and is transmitted to the antenna through the filter unit; if not, the transceiver controls the DPMT switch to turn on the first transmit chain, and the uplink signal enters the power amplifier and the DPMT switch and is transmitted to the antenna through the filter unit.

[0095] Step five: if the radio frequency system works in 4G TLE / 5G NR mode (for example, the uplink signal is a 4G TLE / 5G NR signal), continue to check whether the target transmit power is less than the maximum output power of the transceiver (for example, 6dBm). If yes, the transceiver controls the DPMT switch to turn on the second transmit chain, that is, the Bypass PA chain, and the uplink signal directly enters the DPMT switch and is transmitted to the antenna through the filter unit; if not, the transceiver controls the DPMT switch to turn on the first transmit chain, and the uplink signal enters the power amplifier and the DPMT switch and is transmitted to the antenna through the filter unit.

[0096] Based on the radio frequency system as shown in Figure 4 , the working current of the radio frequency signal of different communication modes is detected and recorded in Table 1.

[0097] Table 1 is a comparison table of the working current of the first transmit chain and the second transmit chain under different frequency bands in the technical scheme of the present application

[0098]

[0099] As shown in Table 1, the second transmit chain saves more than 10mA of radio frequency power consumption for each cellular operating mode compared with the first transmit chain, so as to save the radio frequency power consumption and improve the communication endurance in this scenario.

[0100] In an exemplary embodiment, the working principle of the radio frequency system as shown in Figure 4 is described.

[0101] As shown in Figure 6 , the transceiver can be configured to perform the following steps:

[0102] Step one: the transceiver can detect the cellular operating mode of the radio frequency system;

[0103] Step two: the transceiver can detect whether the radio frequency system works in 2G GSM, 3G WCDMA mode, 4G TLE / 5G NR mode, and if not, return to the previous step to recheck the cellular operating mode of the radio frequency system;

[0104] Step three: if the radio frequency system works in 2G GSM mode (for example, the uplink signal is a 2G GSM signal), continue to check whether the target transmit power is less than the maximum output power of the transceiver (for example, 9 dBm). If yes, traverse each switching power less than 9 dBm with a step of 1 dB to correspondingly acquire the radio frequency power consumption of the first transmit chain and the second transmit chain, and confirm a target switching power "x", at which the radio frequency power consumption of the second transmit chain is less than or equal to the radio frequency power consumption of the first transmit chain. The target switching power "x" is used as the power switching point of the first transmit chain and the second transmit chain. In the case where the target transmit power is less than the target switching power, the DPMT switch is controlled to be turned on for the second transmit chain, that is, the Bypass PA chain, and the uplink signal thereof directly enters the DPMT switch and is transmitted to the antenna through the filter unit.

[0105] If the target transmit power is greater than the maximum output power of the transceiver, the transceiver controls the DPMT switch to be turned on for the first transmit chain, and the uplink signal thereof enters the power amplifier and the DPMT switch and is transmitted to the antenna through the filter unit.

[0106] Step four: if the radio frequency system works in 3G WCDMA mode (for example, the uplink signal is a 3G WCDMA signal), continue to check whether the target transmit power is less than the maximum output power of the transceiver (for example, 3 dBm). If yes, traverse each switching power less than 3 dBm with a step of 1 dB to correspondingly acquire the radio frequency power consumption of the first transmit chain and the second transmit chain, and confirm a target switching power "y", at which the radio frequency power consumption of the second transmit chain is less than or equal to the radio frequency power consumption of the first transmit chain. The target switching power "y" is used as the power switching point of the first transmit chain and the second transmit chain. In the case where the target transmit power is less than the target switching power, the DPMT switch is controlled to be turned on for the second transmit chain, that is, the Bypass PA chain, and the uplink signal thereof directly enters the DPMT switch and is transmitted to the antenna through the filter unit.

[0107] If the target transmit power is greater than the maximum output power of the transceiver, the transceiver controls the DPMT switch to be turned on for the first transmit chain, and the uplink signal thereof enters the power amplifier and the DPMT switch and is transmitted to the antenna through the filter unit.

[0108] Step five: if the radio frequency system works in 4G TLE / 5G NR mode (for example, the uplink signal is a 4G TLE / 5G NR signal), continue to check whether the target transmission power is less than the maximum output power of the transceiver (for example, 6dBm). If yes, traverse each switching power less than 6dBm with a step of 1dB to obtain the radio frequency power consumption of the first transmission link and the second transmission link, and confirm a target switching power "z" at which the radio frequency power consumption of the second transmission link is less than or equal to the radio frequency power consumption of the first transmission link. The target switching power "z" is used as the power switching point of the first transmission link and the second transmission link. In the case where the target transmission power is less than the target switching power, the control DPMT switch is turned on to the second transmission link, that is, the Bypass PA link, and the uplink signal directly enters the DPMT switch and is transmitted to the antenna through the filter unit.

[0109] If the target transmission power is greater than the maximum output power of the transceiver, the transceiver controls the DPMT switch to turn on the first transmission link, and the uplink signal enters the power amplifier and the DPMT switch and is transmitted to the antenna through the filter unit.

[0110] In optional embodiments, the radio frequency system of the present application can also be a Wi-Fi system. As shown in FIG. 6, in an exemplary embodiment, the Wi-Fi system includes a Wi-Fi chip 210, a Wi-Fi power amplifier 220, a first Wi-Fi switch 230, and a Wi-Fi filter unit 240. The Wi-Fi chip 210 includes transmission ports RF3 and RF4 for providing Wi-Fi signals. Figure 7

[0111] The input end of the Wi-Fi power amplifier 220 is connected with the transmission port RF3, and the output end of the Wi-Fi power amplifier 220 is connected with a first end of the first Wi-Fi switch 230. The other first end of the first Wi-Fi switch 230 is connected with the transmission port RF4. The second end of the first Wi-Fi switch 230 is connected with the first end of the Wi-Fi filter unit 240, respectively, and the second end of the Wi-Fi filter unit 240 is used to be connected with a Wi-Fi antenna.

[0112] The Wi-Fi chip 210 is configured to:

[0113] obtain a target transmission power of the Wi-Fi system for transmitting a Wi-Fi signal;

[0114] In the case where the target transmission power is greater than or equal to the maximum output power of the Wi-Fi chip, the first Wi-Fi switch is controlled to turn on the path between the Wi-Fi power amplifier and the Wi-Fi filter unit to turn on the first Wi-Fi transmission link.

[0115] ​In a case that the target transmission power of the Wi-Fi signal is less than the maximum output power of the Wi-Fi chip, the first Wi-Fi switch is controlled to turn on the path between the transmission port RF4 and the Wi-Fi filter unit, so as to turn on the second Wi-Fi transmission link.

[0116] For example, the Wi-Fi signal can be a Wi-Fi 2.4G band signal or a Wi-Fi 5G band signal. If the Wi-Fi signal is a Wi-Fi 2.4G band signal, and the passband of the Wi-Fi filter unit 240 is at least a frequency range corresponding to the Wi-Fi 2.4G band; if the Wi-Fi signal is a Wi-Fi 5G band signal, and the passband of the Wi-Fi filter unit 240 is at least a frequency range corresponding to the Wi-Fi 5G band.

[0117] In this embodiment, the Wi-Fi system includes a Wi-Fi chip 210, a Wi-Fi power amplifier 220, a first Wi-Fi switch 230, and a Wi-Fi filter unit 240. The first Wi-Fi switch 230 is connected to the Wi-Fi chip 210, the Wi-Fi power amplifier 220, and the Wi-Fi filter unit 240, respectively. The Wi-Fi chip 210 can select the first Wi-Fi transmission link to be turned on according to the comparison result of the target transmission power of the Wi-Fi signal and the maximum output power of the Wi-Fi chip 210. In this way, the Wi-Fi signal can be power amplified by the Wi-Fi power amplifier 120 to increase the transmission power of the uplink signal, so as to be suitable for a high-power communication scenario.

[0118] In addition, the Wi-Fi chip 210 can also select the second transmission link to be turned on according to the comparison result. The second transmission link is turned on to bypass the Wi-Fi power amplifier 220, so as to avoid the current consumption of the Wi-Fi power amplifier 220 to achieve the purpose of saving radio frequency power consumption and improve the communication endurance of the Wi-Fi system. In addition, the Wi-Fi filter unit 240 is arranged on the fourth transmission link, which can filter the Wi-Fi signal to filter out the spurious signal, so as to suppress the nonlinear spurious wave generated by the Wi-Fi chip 210 to a certain extent, so as to ensure the communication quality of the Wi-Fi system in a low-power scenario. In addition, the on-off state of the first Wi-Fi switch 230 is controlled by the Wi-Fi system in this embodiment, so that an additional controller is not needed to control the on-off state of the first Wi-Fi switch 230. The cost is reduced, and the occupied space of the Wi-Fi system is also reduced, which is beneficial to the miniaturization design of the product.

[0119] For example, the Wi-Fi signal can be a Wi-Fi 2.4G band signal or a Wi-Fi 5G band signal. If the Wi-Fi signal is a Wi-Fi 2.4G band signal, and the passband of the Wi-Fi filter unit 240 is at least a frequency range corresponding to the Wi-Fi 2.4G band; if the Wi-Fi signal is a Wi-Fi 5G band signal, and the passband of the Wi-Fi filter unit 240 is at least a frequency range corresponding to the Wi-Fi 5G band. Figure 8As shown, in an exemplary embodiment, the Wi-Fi system includes two Wi-Fi filter units 240; one of the Wi-Fi filter units 240 is used to allow Wi-Fi 2.4G band signals to pass, for example, it can be a Wi-Fi 2.4G filter 241; the other Wi-Fi filter unit 240 is used to allow Wi-Fi 5G band signals to pass, for example, it can be a Wi-Fi 5G filter 242.

[0120] The two first ends of the first Wi-Fi switch 230 are respectively connected with the transmitting ports RF3 and RF4, and the two second ends of the first Wi-Fi switch 230 are respectively connected with the two Wi-Fi filter units 240. Exemplarily, the Wi-Fi switch 230 can be a DPDT switch.

[0121] In an exemplary embodiment, a second Wi-Fi switch can also be arranged between the two Wi-Fi filter units and the Wi-Fi antenna, the two first ends of the second Wi-Fi switch are respectively connected with the two Wi-Fi filter units, and the second end of the second Wi-Fi switch is connected with the Wi-Fi antenna.

[0122] Exemplarily, if the Wi-Fi signal currently required for communication is a Wi-Fi 2.4G band signal, in the case that the target transmitting power is greater than the maximum output power of the Wi-Fi chip 210, the Wi-Fi chip 210 can control the path between the conductive contact 1 and the contact 3 of the DPDT, and make the contact 2 of the Wi-Fi switch 230 in the off state, and the Wi-Fi 2.4G band signal passes through the Wi-Fi power amplifier 220, the DPDP switch, the Wi-Fi 2.4G filter 241 to the antenna. In the case that the target transmitting power is less than the maximum output power of the Wi-Fi chip 210, the Wi-Fi chip 210 can control the path between the conductive contact 2 and the contact 1 of the DPDT, and make the contact 1 in the off state, and the Wi-Fi 2.4G band signal passes through the DPDP switch, the Wi-Fi 2.4G filter 241 to the antenna. Exemplarily, if the Wi-Fi signal is a Wi-Fi 2.4G band signal, the maximum output power of the Wi-Fi chip 210 can be 16dBm.

[0123] For example, if the Wi-Fi signal currently in need of communication is a Wi-Fi 5G signal, and the target transmission power is greater than the maximum output power of the Wi-Fi chip 210, the Wi-Fi chip 210 can control the DPDT to be on between the contact 1 and the contact 4, and make the contact 2 of the first Wi-Fi switch 230 in an off state, and the Wi-Fi 5G signal passes through the Wi-Fi power amplifier 220, the DPDP switch, the Wi-Fi 5G filter 242, and reaches the antenna. If the target transmission power is less than the maximum output power of the Wi-Fi chip 210, the Wi-Fi chip 210 can control the DPDT to be on between the contact 2 and the contact 4, and make the contact 1 in an off state, and the Wi-Fi 5G signal passes through the DPDP switch, the Wi-Fi 5G filter 242, and reaches the antenna. For example, if the Wi-Fi signal is a Wi-Fi 5G signal, the maximum output power of the Wi-Fi chip 210 can be 13 dBm.

[0124] In the embodiments of the present application, the Wi-Fi system can support the transmission of Wi-Fi 5G and Wi-Fi 2.4G signals, and for the Wi-Fi 5G and Wi-Fi 2.4G signals, a corresponding first Wi-Fi transmission link and a second Wi-Fi transmission link can be set respectively, wherein the first Wi-Fi switch 230 can be used to select the first Wi-Fi transmission link and the second Wi-Fi transmission link, and can also be used to select the target frequency band, that is, one switch can be used for the selection of the transmission link and the selection of the target frequency band, which can further reduce the cost and can also reduce the occupied area of the radio frequency system.

[0125] In an exemplary embodiment, the present application also provides a communication device comprising the radio frequency system in any of the above embodiments.

[0126] In an exemplary embodiment, a communication device is provided, which can be a terminal, and the internal structure diagram thereof can be as shown in Figure 9The computer device shown in the figure includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capability. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner. The wireless manner can be realized through WI-FI, mobile cellular network, near field communication (NFC) or other technologies. The computer program is executed by the processor to realize a coexistence communication method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the computer device, or an external keyboard, touchpad or mouse, etc.

[0127] Those skilled in the art can understand that, Figure 9 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0128] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0129] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A radio frequency system, characterized in that, include: Transceiver, power amplifier, first switch, filter unit; among which, The transceiver includes a first transmit port and a second transmit port for providing uplink signals; The input terminal of the power amplifier is connected to the first transmitting port, and the output terminal of the power amplifier is connected to a first terminal of the first switch; the other first terminal of the first switch is connected to the second transmitting port; the second terminal of the first switch is connected to a first terminal of the filtering unit, and the second terminal of the filtering unit is used to connect to the antenna; wherein... The transceiver is configured to: Obtain the target transmit power of the uplink signal transmitted by the radio frequency system; When the target transmit power is greater than the maximum output power of the transceiver, the first switch is controlled to open the path between the power amplifier and the filter unit, so as to open the first transmit link; If the target transmit power is less than the maximum output power of the transceiver, the first switch is controlled to open the path between the second transmit port and the filter unit to open the second transmit link.

2. The radio frequency system according to claim 1, characterized in that, The transceiver is also configured to: Multiple switching powers are acquired; wherein each switching power is less than the maximum output power of the transceiver and greater than the target transmit power; When the target transmit power is less than the maximum output power of the transceiver, the RF power consumption of the first transmit link and the RF power consumption of the second transmit link are obtained for each switching power. The target switching power is determined based on the obtained RF power consumption of the first transmission link and the RF power consumption of the second transmission link; wherein, at the target switching power, the RF power consumption of the first transmission link is greater than or equal to the RF power consumption of the second transmission link. When the target transmission power is less than the target switching power, the first switch is controlled to open the path between the second transmission port and the filter unit.

3. The radio frequency system according to claim 2, characterized in that, The transceiver is also configured to: For each switching power, if the RF power consumption of the first transmit link is less than the RF power consumption of the second transmit link, then the first switch is controlled to open the path between the power amplifier and the filter unit.

4. The radio frequency system according to claim 1, characterized in that, The transceiver is also configured to: Determine the communication mode of the uplink signal; The maximum output power of the transceiver is determined according to the communication mode; wherein the communication mode includes one of 2G GSM mode, 3G WCDMA mode, 4G TLE mode, 5G NR mode and Wi-Fi mode; wherein the maximum output power corresponding to the 2G GSM mode, the 3G WCDMA mode, the 4G TLE mode and the Wi-Fi mode are different, or the maximum output power corresponding to the 2G GSM mode, the 3G WCDMA mode, the 5G NR mode and the Wi-Fi mode are different.

5. The radio frequency system according to any one of claims 1-4, characterized in that, The radio frequency system includes multiple filtering units; wherein, the passband of each filtering unit is closed, and the first switch includes two first terminals and multiple second terminals, wherein the multiple second terminals of the first switch are respectively connected to one of the filtering units. The transceiver is also configured to: The first switch is controlled to open the path between the power amplifier and the target filter unit according to the frequency band of the uplink signal, or to open the path between the second transmit port and the target filter unit, wherein the passband of the target filter unit at least partially overlaps with the frequency range of the uplink signal.

6. The radio frequency system according to claim 5, characterized in that, The filtering unit includes a filter or a duplexer.

7. The radio frequency system according to claim 5, characterized in that, The first switch is a DPMT switch, where M is a positive integer greater than or equal to 2.

8. The radio frequency system according to claim 5, characterized in that, The transceiver also includes: The second switch has multiple first terminals that are respectively connected to the second terminals of the multiple filtering units; the second terminal of the second switch is used to connect to the antenna. The transceiver is also connected to the second switch, and the transceiver is also used to control the on / off state of the second switch to conduct the path between the target filter unit and the antenna.

9. The radio frequency system according to claim 8, characterized in that, The transceiver also includes a control port, wherein the control port is connected to the first switch and the second switch respectively via a MIPI bus, and the transceiver is also used to control the on / off state of the first switch and the second switch.

10. The radio frequency system according to claim 5, characterized in that, The uplink signal includes Wi-Fi 2.4G band signal and Wi-Fi 5G band signal, and the radio frequency system includes two filtering units; wherein, one filtering unit is used to allow the Wi-Fi 2.4G band signal to pass through, and the other filtering unit is used to allow the Wi-Fi 5G band signal to pass through.

11. The radio frequency system according to claim 1, characterized in that, The transceiver is an RF chip, and the uplink signal is a cellular signal; or, the transceiver is a Wi-Fi chip, and the uplink signal is a Wi-Fi signal.

12. A communication device, characterized in that, Includes the radio frequency system as described in any one of claims 1-11.

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