Feedback path loss determination method, device, transmitting circuit and computer equipment

Abstract

The present application relates to a method, device, transmitting circuit and computer equipment for determining feedback path loss. The method is applied to a transmitting circuit, and the transmitting circuit includes a radio frequency chip, a feedback path and a front-end module, and the feedback signal output by the front-end module reaches the receiving port of the radio frequency chip via the feedback path. The method includes: obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; the second maximum power is the maximum input power allowed by the receiving port; according to the first maximum power and the second maximum power, determining the target loss value of the feedback path, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value. The use of this method can improve the reliability of the transmitting circuit.

Description

Technical Field

[0001] The present application relates to the technical field of circuit design, and in particular to a method, device, transmitting circuit and computer equipment for determining feedback path loss. Background Art

[0002] With the development of electronic circuit technology, the transmitting circuit can adaptively adjust its transmission power through CLPC (Closed Loop Power Control) technology, so that the transmission power of the transmitting circuit can meet the actual communication needs. In the process of implementing CLPC, the RF chip in the transmitting circuit can control the output power of the chip according to the transmission power of the circuit. However, the traditional transmitting circuit is prone to abnormalities when performing CLPC, and there is a problem of low reliability. Summary of the invention

[0003] Based on this, the embodiments of the present application provide a method, apparatus, transmitting circuit and computer equipment for determining feedback path loss, which can improve the operating reliability of the transmitting circuit.

[0004] In a first aspect, an embodiment of the present application provides a method for determining feedback path loss, which is applied to a transmitting circuit, the transmitting circuit comprising a radio frequency chip, a feedback path, and a front-end module. The feedback signal output by the front-end module reaches a receiving port of the radio frequency chip via the feedback path. The method comprises:

[0005] Obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port;

[0006] A target loss value of the feedback path is determined according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0007] In a second aspect, an embodiment of the present application further provides a feedback path loss determination device, which is applied to a transmitting circuit, the transmitting circuit comprising a radio frequency chip, a feedback path and a front-end module, and the feedback signal output by the front-end module reaches the receiving port of the radio frequency chip via a reflection path. The device comprises:

[0008] A power acquisition module, used to acquire a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power, and the second maximum power is the maximum input power allowed by the receiving port;

[0009] The target loss value determination module is used to determine the target loss value of the feedback path according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0010] In a third aspect, an embodiment of the present application provides a transmitting circuit, the transmitting circuit comprising:

[0011] A radio frequency chip, used for outputting radio frequency signals;

[0012] The front-end module is used to process the radio frequency signal and output the processed radio frequency signal; and is also used to output a feedback signal according to the processed radio frequency signal;

[0013] The feedback path is connected to the receiving port of the RF chip and the front-end module respectively, and is used to attenuate the feedback signal according to the target loss value. The target loss value is the difference between the first maximum power and the second maximum power. The first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits the RF signal with the maximum power; the second maximum power is the maximum input power allowed by the receiving port.

[0014] In a fourth aspect, the present application further provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0015] Obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port;

[0016] A target loss value of the feedback path is determined according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0017] In a fifth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0018] Obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port;

[0019] A target loss value of the feedback path is determined according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0020] In a sixth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0021] Obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port;

[0022] A target loss value of the feedback path is determined according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0023] In the above-mentioned feedback path loss determination method, device, transmitting circuit and computer equipment, the target loss value of the feedback path is determined according to the maximum input power allowed by the receiving port of the RF chip and the power of the RF signal output by the front-end module when the transmitting circuit transmits the RF signal with maximum power. When the feedback path attenuates the feedback signal according to the target loss value, the power of the feedback signal reaching the receiving port of the RF chip can meet the power requirements of the RF chip and the receiving port. In this way, damage to the RF chip can be avoided, and the normal operation of the CLPC function can be ensured, thereby improving the working reliability of the transmitting circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is one of the structural block diagrams of a transmitting circuit in one embodiment;

[0025] Figure 2 This is a second structural block diagram of a transmitting circuit in an embodiment;

[0026] Figure 3 FIG. 1 is a flow chart of a method for determining feedback path loss in one embodiment;

[0027] Figure 4 FIG2 is a second flow chart of a method for determining feedback path loss in an embodiment;

[0028] Figure 5 is a structural block diagram of a feedback path loss determination device in one embodiment;

[0029] Figure 6 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] The feedback path loss determination method provided in the embodiment of the present application can be applied to the transmitting circuit 10. It can be understood that the transmitting circuit 10 can be used to transmit radio frequency signals of any frequency band and / or any format, and the present application does not impose specific restrictions on this. In an example, the transmitting circuit 10 can support any one or any combination of WIFI signals, LTE (Long Term Evolution) signals, NR (New Radio) signals, CDMA (Code Division Multiple Access) signals, and Bluetooth signals.

[0032] like Figure 1-2 As shown, the transmitting circuit 10 may include a radio frequency chip 102, a FEM (Front-End Module) 104 and a feedback path 112, wherein the output port of the radio frequency chip 102 is connected to the input port of the FEM 104, and the output port of the FEM 104 is connected to the input port of the radio frequency chip 102 through the feedback path 112. Specifically, the radio frequency chip 102 is used to output a radio frequency signal (hereinafter, the radio frequency signal output by the radio frequency chip 102 is referred to as a first radio frequency signal), and the frequency band and / or format of the first radio frequency signal can be determined according to the actual communication situation, and this application does not specifically limit this. In one embodiment, the radio frequency chip 102 may be a WIFI chip.

[0033] When receiving the first RF signal, FEM 104 may perform signal processing on the first RF signal, such as amplification processing and / or filtering processing, and output the processed RF signal (hereinafter, the processed RF signal is referred to as the second RF signal). The specific components and circuits included in FEM 104, as well as the connection structure between the components and circuits, may be determined based on factors such as the signal processing type, the frequency range of the first RF signal, the frequency range of the second RF signal, and the signal processing index, and the present application does not impose specific restrictions on this. In one embodiment, the transmitting circuit 10 may also include an antenna 106, which is used to radiate the second RF signal to achieve signal transmission. The radiation power of the antenna 106 is the transmission power of the transmitting circuit 10.

[0034] The FEM 104 is also used to output a feedback signal of a corresponding power to the RF chip 102 according to the power of the second RF signal, so that the RF chip 102 can control the power of the first RF signal according to the power of the feedback signal. When the power of the first RF signal is adjusted, the power of the second RF signal will also change accordingly, so that the CLPC function can be realized, thereby controlling the transmission power of the transmission circuit 10.

[0035] The “feedback path” referred to in the embodiments of the present application refers to a path between the FEM 104 and the RF chip 102 for transmitting feedback signals. Figure 2 As shown, the RF chip 102 outputs a first RF signal through a transmitting port, and the first RF signal reaches the input port of the FEM 104 via a path 114 between the transmitting port and the FEM 104. The second RF signal output by the FEM 104 reaches the antenna 106 via a transmitting path 116 between the FEM 104 and the antenna 106, so that the antenna 106 can radiate the second RF signal. A coupler may be provided in the FEM 104, and the coupler is used to couple the second RF signal to output a feedback signal. The feedback signal reaches the PDET (Power Detector) port of the RF chip 102 via a feedback path 112. In this case, the feedback path 112 is a path between the coupler and the PDET port.

[0036] Understandably, except Figure 1-2 In addition to the module devices shown, the transmitting circuit 10 may also include more devices, modules or circuits to match the actual communication requirements. At the same time, the connection relationship between the devices, modules or circuits can also be determined according to the actual communication requirements. This application does not impose specific restrictions on this. It is only necessary that the transmitting circuit 10 has the CLPC function.

[0037] As mentioned in the background technology, conventional technology is prone to abnormalities when performing CLPC, resulting in the problem of low reliability of the transmitting circuit. The inventors have found that the cause of this problem is that, when designing the transmitting circuit, technicians use the universal reference design provided by Qualcomm as the target loss value of the feedback path, so that the feedback path attenuates the feedback signal according to the universal reference design. The universal reference design is determined based on the mainstream FEM specifications on the market and the requirements of Qualcomm chips. However, there are many manufacturers and specifications of FEMs, and FEMs produced by different manufacturers will have different coupling coefficients, even different models of FEMs produced by the same manufacturer will have different coupling coefficients. At the same time, the maximum transmission power to be achieved by each transmitting circuit is not fixed, but will be specifically determined according to the actual situation (such as the application product of the transmitting circuit, the frequency band compatible with the transmitting circuit, etc.). In such a complex situation, if the loss setting of the feedback path is unreasonable, it is very likely that the power of the feedback signal reaching the RF chip will exceed the maximum power required by the chip, which will lead to chip damage or CLPC function abnormalities, causing the transmitting circuit to be unable to reliably control the transmitting power or even unable to transmit signals, resulting in low reliability and poor stability.

[0038] To solve the above problems, the embodiments of the present application provide a feedback path loss determination method, device, transmitting circuit, computer equipment, computer-readable storage medium, and computer program product, which can ensure that the power of the feedback signal reaching the receiving port of the RF chip meets the power requirements of the RF chip and the receiving port. In this way, damage to the RF chip can be avoided, and the normal operation of the CLPC function can be ensured, thereby improving the working reliability of the transmitting circuit.

[0039] In one embodiment, Figure 3 As shown, a method for determining feedback path loss is provided, and the method is described by taking the method executed on a computer device as an example. The method includes the following steps:

[0040] S202, obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of a feedback signal output by the FEM when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port.

[0041] S204: determining a target loss value of the feedback path according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the FEM according to the target loss value.

[0042] Specifically, the transmission power of the transmission circuit can float within a certain range, and the floating range can be determined according to the design requirements. The computer device can obtain the power of the feedback signal output by the FEM when the transmission power of the transmission circuit is the maximum transmission power, and the power of the feedback signal is the first maximum power. In this case, the first maximum power is the maximum power of the feedback signal during the operation of the transmission circuit.

[0043] The computer device can also obtain the maximum input power allowed by the receiving port of the RF chip, that is, the second maximum power. The second maximum power is the maximum power that ensures the normal operation of the CLPC function and avoids damaging the RF chip. In other words, if the power of the RF signal received by the RF chip through the receiving port is greater than the second maximum power, it is possible to damage the RF chip, cause abnormal CLPC function, or cause power out of control under high power. In one embodiment, if the receiving port is a PDET port, the specific value of the second maximum power can be determined according to the maximum power of the linear working area of ​​the PDET port. Among them, the linear working area of ​​the PDET port refers to the optimal area for the PDET port to perform power detection. If the power input to the PDET port is in the linear working area, the PDET port can accurately detect the power so that the error between the detected power and the power input to the port is within a preset range. In this way, the CLPC performance can meet the preset requirements. Further, the computer device can use the maximum power of the linear working area as the second maximum power, or determine the second maximum power as a power value greater than the maximum power of the linear working area. In another embodiment, the second maximum power can be determined by querying the chip manual of the RF chip.

[0044] The computer device may determine the target loss value of the feedback path according to the first maximum power and the second maximum power. Further, the specific manner in which the computer device determines the target loss value may be determined based on the characteristics and experience of the CLPC, and this application does not impose any specific limitation on this.

[0045] The target loss value refers to the minimum loss value that can avoid damage to the RF chip and ensure the normal function of the CLPC. After determining the target loss value, the feedback path can attenuate the feedback signal according to the target loss value. That is, the actual loss value of the feedback path is set to a value greater than or equal to the target loss value, and the feedback signal output by the FEM is attenuated through the feedback path, thereby avoiding the problem of excessive power of the feedback signal reaching the receiving port of the RF chip, which may cause power out of control.

[0046] In the above feedback path loss determination method, the target loss value of the feedback path is determined according to the maximum input power allowed by the receiving port of the RF chip and the power of the RF signal output by the FEM when the transmitting circuit transmits the RF signal with the maximum power. When the feedback path attenuates the feedback signal according to the target loss value, the power of the feedback signal reaching the receiving port of the RF chip can meet the power requirements of the RF chip and the receiving port. In this way, damage to the RF chip can be avoided, and the normal operation of the CLPC function can be ensured, thereby improving the working reliability of the transmitting circuit.

[0047] In one embodiment, the target loss value is the difference between the first maximum power and the second maximum power. In other words, the embodiment of the present application can be obtained by L 反馈 =P max1 -P 芯 This expression is used to determine the target loss value, where L 反馈 is the target loss value, P max1 is the first maximum power, P 芯 In this way, the calculation process of the target loss value can be simplified and the efficiency of determining the target loss value can be improved.

[0048] In one embodiment, if a coupler is provided in the FEM, and the coupler is used to couple the RF signal output by the FEM to obtain a feedback signal, the first maximum power may be the difference between the third maximum power and the coupling degree of the coupler. The third maximum power is the power of the RF signal output by the FEM when the transmitting circuit transmits the RF signal with the maximum power.

[0049] It should be noted that the “RF signal output by the FEM” refers to the RF signal output by the FEM and used for radiation. Figure 2 In the transmitting circuit shown, “the radio frequency signal output by the FEM” refers to the radio frequency signal output by the FEM to the antenna.

[0050] Specifically, if the FEM couples the output RF signal through the coupler therein to obtain a feedback signal, the power of the feedback signal is associated with the coupling degree of the coupler, and the power of the feedback signal is also associated with the power of the RF signal output by the front-end module. In this embodiment, the computer device can obtain the power of the RF signal output by the FEM when the transmission power of the transmitting circuit is the maximum transmission power, and this power is the third maximum power. In other words, when the FEM outputs the RF signal of the third maximum power, the transmission power of the transmitting circuit is the maximum. The computer device can also obtain the coupling degree of the coupler, and use the difference between the third maximum power and the coupling degree as the first maximum power. That is, the embodiment of the present application can obtain the third maximum power through P max1 =P fem -O 耦This expression is used to determine the first maximum power, where P max1 is the first maximum power, P fem is the third maximum power, O 耦 is the coupling degree of the coupler.

[0051] In this embodiment, by taking the difference between the third maximum power and the coupling degree as the first maximum power, the first maximum power can be determined simply and accurately, thereby improving the efficiency and accuracy of determining the target loss value.

[0052] In one embodiment, the transmitting circuit may further include a transmitting path and an antenna. The RF signal output by the front-end module reaches the antenna via the transmitting path. The antenna is used to radiate the RF signal to achieve signal transmission. In the transmitting circuit of this structure, the third maximum power is the sum of the fourth maximum power and the loss value of the transmitting path. The fourth maximum power is the maximum power of the RF signal transmitted by the transmitting circuit. That is, it can be obtained by P fem =P out +L 发射 This expression is used to determine the third maximum power, where P fem is the third maximum power, P out is the fourth maximum power, L 发射 is the loss value of the transmission path between the FEM and the antenna. In this embodiment, by taking the sum of the fourth maximum power and the loss value of the transmission path as the third maximum power, the third maximum power can be determined simply and accurately, thereby improving the efficiency and accuracy of determining the target loss value.

[0053] In one example, if Figure 3 As shown, a method for determining feedback path loss is provided, the method comprising the following steps:

[0054] S302, find the fourth maximum power and obtain the loss value of the transmission path, and determine the sum of the fourth maximum power and the loss value of the transmission path as the third maximum power. The fourth maximum power may be the maximum transmission power of the transmission circuit determined during design.

[0055] S304, searching for a coupling degree of the coupler, and determining a difference between the third maximum power and the coupling degree as the first maximum power.

[0056] S306, finding the second maximum power, and determining the difference between the first maximum power and the second maximum power as the target loss value of the feedback path, so that the feedback path attenuates the feedback signal according to the target loss value; wherein the second maximum power is the maximum input power allowed by the receiving port.

[0057] Specifically, the expression P 芯 =P fem -O 耦 -L反馈 To determine the target loss value L of the feedback path 反馈 , where P fem =P out +L 发射 In one example, when the maximum input power P allowed by the PDET port 芯 0dBm, O 耦 16dB, P fem When it is 20dBm, we can get L 反馈 4dB, that is, the actual loss value of the feedback path is at least 4dB, which can ensure that the power reaching the RF chip does not exceed the maximum power required by the chip PEDT port. In another example, the RF chip is a WCN6856 chip. Under WIFI 2.4G, if the input power of the PDET port is less than or equal to -10dBm, the CLPC function of the transmitting circuit performs well. At this time, P 芯 =-10dBm Substituting into the above expression, we get L 反馈 The optimum value is 14dB. 反馈 After that, according to L 反馈 The schematic diagram or hardware loop of the feedback path is designed so that the feedback path attenuates the feedback signal according to the target loss value.

[0058] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0059] In one embodiment, a transmitting circuit is provided, which includes a radio frequency chip, a FEM and a feedback path. The feedback path is respectively connected to the FEM and the receiving port of the radio frequency chip, and is used to attenuate the feedback signal according to the target loss value. The target loss value is the difference between the first maximum power and the second maximum power. The first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits the radio frequency signal with the maximum power. The second maximum power is the maximum input power allowed by the receiving port.

[0060] It can be understood that the feedback path can use the feedback path impedance determination method in any of the above embodiments to determine its target loss value, which will not be described in detail here.

[0061] In one embodiment, the feedback path may be provided with one or more resistors. In the case where there are multiple resistors, the resistors may be connected in series in sequence. The equivalent resistance of the feedback path may be determined according to the target loss value, for example, the equivalent resistance may be greater than or equal to the target loss value. In this embodiment, the feedback path is provided with one or more resistors so that the feedback path can attenuate the feedback signal according to the target loss value, which can avoid the maximum input power allowed by the receiving port of the feedback signal reaching the receiving port of the RF chip, and reduce the cost and volume of the transmitting circuit.

[0062] In one embodiment, one or more resistors in the feedback path are resistors with adjustable resistance values. Thus, after the transmitting circuit leaves the factory, even if the first maximum power and / or the second maximum power are adjusted, the transmitting circuit can still adjust the loss value of the feedback path through the resistors with adjustable resistance values, so that the feedback path attenuates the feedback signal according to the adjusted target loss value, thereby improving the applicability of the transmitting circuit.

[0063] Based on the same inventive concept, the embodiment of the present application also provides a feedback path loss determination device for implementing the feedback path loss determination method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of one or more feedback path loss determination devices provided below can refer to the limitations of the feedback path loss determination method above, and will not be repeated here.

[0064] In one embodiment, Figure 5 As shown, a feedback path loss determination device 400 is provided, which is applied to a transmitting circuit, wherein the transmitting circuit includes a radio frequency chip, a feedback path and a front-end module, and the feedback signal output by the front-end module reaches the receiving port of the radio frequency chip via the feedback path. The device includes: a power acquisition module 410 and a target loss value determination module 420, wherein:

[0065] A power acquisition module 410, configured to acquire a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power, and the second maximum power is the maximum input power allowed by the receiving port;

[0066] The target loss value determination module 420 is used to determine the target loss value of the feedback path according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0067] In one embodiment, the target loss value is the difference between the first maximum power and the second maximum power.

[0068] In one embodiment, the front-end module includes a coupler, and the coupler is used to couple the radio frequency signal output by the front-end module to obtain the feedback signal. The first maximum power is the difference between the third maximum power and the coupling degree of the coupler; wherein the third maximum power is the power of the radio frequency signal output by the front-end module when the transmitting circuit transmits the radio frequency signal with maximum power.

[0069] In one embodiment, the transmitting circuit further includes a transmitting path and an antenna, and the RF signal output by the front-end module reaches the antenna via the transmitting path, and the antenna is used to radiate the RF signal. The third maximum power is the sum of the fourth maximum power and the loss value of the transmitting path; wherein the fourth maximum power is the maximum power of the RF signal transmitted by the transmitting circuit.

[0070] In one embodiment, the receiving port is a power detection port. The power acquisition module 410 includes a second maximum power determination unit, which is used to determine the second maximum power according to the maximum power in the linear working area of ​​the power detection port.

[0071] Each module in the above feedback path loss determination device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0072] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 6 As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. 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, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as the first maximum power, the second maximum power, the third maximum power, the fourth maximum power and the coupling degree. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for determining feedback path loss is implemented.

[0073] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0074] In one embodiment, a computer device is provided, which is applied to a transmitting circuit, wherein the transmitting circuit includes a radio frequency chip, a feedback path, and a front-end module, wherein a feedback signal output by the front-end module reaches a receiving port of the radio frequency chip via the feedback path. The computer device includes a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0075] Obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port;

[0076] A target loss value of the feedback path is determined according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0077] In one embodiment, when the processor executes the computer program, the following steps are further implemented: the target loss value is the difference between the first maximum power and the second maximum power.

[0078] In one embodiment, the front-end module includes a coupler, and the coupler is used to couple the radio frequency signal output by the front-end module to obtain the feedback signal. When the processor executes the computer program, the following steps are also implemented: the first maximum power is the difference between the third maximum power and the coupling degree of the coupler; wherein the third maximum power is the power of the radio frequency signal output by the front-end module when the transmitting circuit transmits the radio frequency signal with maximum power.

[0079] In one embodiment, the transmitting circuit further includes a transmitting path and an antenna, and the radio frequency signal output by the front-end module reaches the antenna via the transmitting path, and the antenna is used to radiate the radio frequency signal. When the processor executes the computer program, the following steps are also implemented: the third maximum power is the sum of the fourth maximum power and the loss value of the transmitting path; wherein the fourth maximum power is the maximum power of the radio frequency signal transmitted by the transmitting circuit.

[0080] In one embodiment, the receiving port is a power detection port. When the processor executes the computer program, the processor further implements the following steps: determining the second maximum power according to the maximum power in the linear working area of ​​the power detection port.

[0081] In one embodiment, a computer-readable storage medium is provided, which is applied to a transmitting circuit, wherein the transmitting circuit includes a radio frequency chip, a feedback path, and a front-end module, wherein a feedback signal output by the front-end module reaches a receiving port of the radio frequency chip via the feedback path. A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the following steps are implemented:

[0082] Obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port;

[0083] A target loss value of the feedback path is determined according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0084] In one embodiment, when the computer program is executed by a processor, the following steps are implemented: the target loss value is the difference between the first maximum power and the second maximum power.

[0085] In one embodiment, the front-end module includes a coupler, and the coupler is used to couple the radio frequency signal output by the front-end module to obtain the feedback signal. When the computer program is executed by the processor, the following steps are implemented: the first maximum power is the difference between the third maximum power and the coupling degree of the coupler; wherein the third maximum power is the power of the radio frequency signal output by the front-end module when the transmitting circuit transmits the radio frequency signal with maximum power.

[0086] In one embodiment, the transmitting circuit further includes a transmitting path and an antenna, and the radio frequency signal output by the front-end module reaches the antenna via the transmitting path, and the antenna is used to radiate the radio frequency signal. When the computer program is executed by the processor, the following steps are implemented: the third maximum power is the sum of the fourth maximum power and the loss value of the transmitting path; wherein the fourth maximum power is the maximum power of the radio frequency signal transmitted by the transmitting circuit.

[0087] In one embodiment, the receiving port is a power detection port. When the computer program is executed by a processor, the following steps are implemented: determining the second maximum power according to the maximum power in the linear working area of ​​the power detection port.

[0088] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0089] Obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port;

[0090] A target loss value of the feedback path is determined according to the first maximum power and the second maximum power, so that the feedback path attenuates the feedback signal output by the front-end module according to the target loss value.

[0091] In one embodiment, when the computer program is executed by a processor, the following steps are further implemented: the target loss value is the difference between the first maximum power and the second maximum power.

[0092] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the first maximum power is the difference between the third maximum power and the coupling degree of the coupler; wherein the third maximum power is the power of the radio frequency signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power.

[0093] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the third maximum power is the sum of the fourth maximum power and the loss value of the transmission path; wherein the fourth maximum power is the maximum power of the radio frequency signal transmitted by the transmission circuit.

[0094] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the second maximum power according to the maximum power in the linear working area of ​​the power detection port.

[0095] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can implement the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0096] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for determining feedback path loss, characterized in that: Applied to a transmitting circuit, the transmitting circuit includes a radio frequency chip, a feedback path and a front-end module, and the feedback signal output by the front-end module reaches the receiving port of the radio frequency chip through the feedback path; the method includes: Obtaining a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power; and the second maximum power is the maximum input power allowed by the receiving port; Based on the first maximum power and the second maximum power, a target loss value of the feedback path is determined so that the feedback path sets an actual loss value greater than or equal to the target loss value to attenuate the feedback signal output by the front-end module, wherein the target loss value is the difference between the first maximum power and the second maximum power.

2. The method according to claim 1, characterized in that The front-end module includes a coupler, and the coupler is used to couple the radio frequency signal output by the front-end module to obtain the feedback signal; The first maximum power is the difference between the third maximum power and the coupling degree of the coupler; wherein the third maximum power is the power of the radio frequency signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power.

3. The method according to claim 2, characterized in that The transmitting circuit further includes a transmitting path and an antenna, the radio frequency signal output by the front-end module reaches the antenna via the transmitting path, and the antenna is used to radiate the radio frequency signal; The third maximum power is the sum of the fourth maximum power and the loss value of the transmission path; wherein the fourth maximum power is the maximum power of the radio frequency signal transmitted by the transmission circuit.

4. The method according to claim 1, characterized in that: The receiving port is a power detection port; and the step of obtaining the second maximum power comprises: The second maximum power is determined according to the maximum power in the linear working area of ​​the power detection port.

5. The method according to claim 4, characterized in that The determining the second maximum power according to the maximum power in the linear working area of ​​the power detection port includes: The maximum power in the linear working region is used as the second maximum power, or the second maximum power is determined to be a power value greater than the maximum power in the linear working region.

6. A feedback path loss determination device, characterized in that: Applied to a transmitting circuit, the transmitting circuit includes a radio frequency chip, a feedback path and a front-end module, and the feedback signal output by the front-end module reaches the receiving port of the radio frequency chip through the feedback path; the device includes: A power acquisition module, used to acquire a first maximum power and a second maximum power; wherein the first maximum power is the power of the feedback signal output by the front-end module when the transmitting circuit transmits a radio frequency signal with maximum power, and the second maximum power is the maximum input power allowed by the receiving port; a target loss value determination module, used to determine the target loss value of the feedback path according to the first maximum power and the second maximum power, so that the feedback path sets the actual loss value to be greater than or equal to the target loss value to attenuate the feedback signal output by the front-end module, wherein the target loss value is the difference between the first maximum power and the second maximum power.

7. A transmitting circuit, characterized in that: The transmitting circuit comprises: A radio frequency chip, used for outputting radio frequency signals; A front-end module, configured to process the radio frequency signal and output the processed radio frequency signal; the front-end module is also configured to output a feedback signal based on the processed radio frequency signal; A feedback path, respectively connecting the receiving port of the RF chip and the front-end module, is used to set the actual loss value to be greater than or equal to the target loss value to attenuate the feedback signal; wherein the target loss value is the difference between a first maximum power and a second maximum power, the first maximum power being the power of the feedback signal output by the front-end module when the transmitting circuit transmits a RF signal with maximum power; the second maximum power is the maximum input power allowed by the receiving port.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

Images