LNA switch switching method, device, computer equipment and storage medium

Abstract

The present application relates to an LNA switch switching method, device, computer equipment and storage medium. The method includes: obtaining the power value of the currently received radio frequency signal and the LNA switch threshold pair; judging whether the power value is within the interval formed by the current LNA switch threshold pair, and maintaining the original path when it is within the interval; when the original path is a Bypass path, obtaining the detection result of the LNA next-level circuit on the radio frequency signal, if the result does not meet the preset condition, updating the LNA path conduction threshold according to the preset step to obtain a new LNA switch threshold pair, and when the power value is outside the interval formed by the new LNA switch threshold pair, switching to the LNA path. The method dynamically adjusts the LNA path conduction threshold in combination with the actual received radio frequency signal and its detection result to avoid the failure to open the LNA path in time due to the signal power being too small.

Description

Technical Field

[0001] The present application relates to the field of signal processing technology, and in particular to an LNA switch switching method, device, computer equipment and storage medium. Background Art

[0002] LNA (Low Noise Amplifier) ​​is an amplifier with a very low noise factor. It is generally used as a high-frequency or intermediate-frequency preamplifier for various radio receivers, as well as an amplifier circuit for highly sensitive electronic detection equipment. When amplifying weak signals, the noise of the amplifier itself may seriously interfere with the signal, so it is hoped to reduce this noise to improve the output signal-to-noise ratio.

[0003] The use of LNA in wireless communication systems uses a gain control mechanism; through gain control, the circuit can adjust the dynamic range of the received signal amplitude, reduce power consumption and improve linearity. As the first-stage circuit of the RF receiving system, the low-noise amplifier LNA should have the ability to receive and process RF signals with a large dynamic range. In the receiver, the low-noise amplifier must output an appropriate signal to the next-stage circuit. If the signal is too small, the mixer cannot detect it; if the signal is too large, it will cause overload and deteriorate the linearity. The signal received by the low-noise amplifier is a signal with a large dynamic range, so LNA gain adjustment is necessary.

[0004] In existing communication receiving systems, a gain control circuit is required due to large variations in received signals. Using only one low-noise amplifier in a radio frequency transceiver cannot meet the dynamic range requirements of the receiving link.

[0005] The existing gain control circuit will detect the power of the received signal and compare the current signal power with the set threshold value. When the signal is greater than the threshold value, it switches to another path, and when the signal is less than the threshold value, the LNA path is turned on. When only one detection threshold value is set and the received signal value is near the threshold value, cyclic switching may be performed. When oscillation occurs during cyclic switching, it will cause distortion of the received signal. Summary of the invention

[0006] Based on this, an LNA switch switching method, device, computer equipment and storage medium are provided to avoid distortion of received signals while ensuring the stability of received signals.

[0007] An LNA switch switching method, the method comprising:

[0008] Obtain the power value of the current RF signal; the RF signal is obtained by adjusting the received original RF signal through the gain adjustment mechanism inside the transceiver;

[0009] Acquire the current LNA switch threshold pair; the LNA switch threshold pair includes an LNA path conduction threshold and an LNA path shutoff threshold; the LNA path shutoff threshold is set according to a gain adjustment mechanism; the LNA path conduction threshold is jointly set according to the gain adjustment mechanism and the power value of the received RF signal;

[0010] When the power value is within the interval formed by the current LNA switch threshold pair, the original path is maintained; the original path is the LNA path or the Bypass path;

[0011] When the original path is a bypass path, the detection result of the LNA next-stage circuit on the RF signal is obtained. If the detection result does not meet the preset condition, the LNA path conduction threshold is updated according to the preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair;

[0012] When the power value is outside the interval formed by the new LNA switch threshold pair, the LNA path is switched.

[0013] An LNA switch switching device, the device comprising:

[0014] The signal power value acquisition module is used to obtain the power value of the current RF signal; the RF signal is obtained by adjusting the received original RF signal through the gain adjustment mechanism inside the transceiver;

[0015] A switch threshold pair acquisition module, used to acquire the current LNA switch threshold pair; the LNA switch threshold pair includes an LNA path conduction threshold and an LNA path shutdown threshold; the LNA path shutdown threshold is set according to a gain adjustment mechanism; the LNA path conduction threshold is jointly set according to the gain adjustment mechanism and the power value of the received RF signal;

[0016] A first power value comparison module is used to maintain the original path when the power value is within the interval formed by the current LNA switch threshold pair; the original path is the LNA path or the Bypass path;

[0017] A switch threshold pair updating module is used to obtain the detection result of the LNA next-level circuit on the RF signal when the original path is a bypass path. If the detection result does not meet the preset condition, the LNA path conduction threshold is updated according to the preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair;

[0018] The second power value comparison module is used to switch to the LNA path when the power value is outside the interval formed by the new LNA switch threshold pair.

[0019] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0020] Obtain the power value of the current RF signal; the RF signal is obtained by adjusting the received original RF signal through the gain adjustment mechanism inside the transceiver;

[0021] Acquire the current LNA switch threshold pair; the LNA switch threshold pair includes an LNA path conduction threshold and an LNA path shutoff threshold; the LNA path shutoff threshold is set according to a gain adjustment mechanism; the LNA path conduction threshold is jointly set according to the gain adjustment mechanism and the power value of the received RF signal;

[0022] When the power value is within the interval formed by the current LNA switch threshold pair, the original path is maintained; the original path is the LNA path or the Bypass path;

[0023] When the original path is a bypass path, the detection result of the LNA next-stage circuit on the RF signal is obtained. If the detection result does not meet the preset condition, the LNA path conduction threshold is updated according to the preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair;

[0024] When the power value is outside the interval formed by the new LNA switch threshold pair, the LNA path is switched.

[0025] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the following steps:

[0026] Obtain the power value of the current RF signal; the RF signal is obtained by adjusting the received original RF signal through the gain adjustment mechanism inside the transceiver;

[0027] Acquire the current LNA switch threshold pair; the LNA switch threshold pair includes an LNA path conduction threshold and an LNA path shutoff threshold; the LNA path shutoff threshold is set according to a gain adjustment mechanism; the LNA path conduction threshold is jointly set according to the gain adjustment mechanism and the power value of the received RF signal;

[0028] When the power value is within the interval formed by the current LNA switch threshold pair, the original path is maintained; the original path is the LNA path or the Bypass path;

[0029] When the original path is a bypass path, the detection result of the LNA next-stage circuit on the RF signal is obtained. If the detection result does not meet the preset condition, the LNA path conduction threshold is updated according to the preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair;

[0030] When the power value is outside the interval formed by the new LNA switch threshold pair, the LNA path is switched.

[0031] The above-mentioned LNA switch switching method, device, computer equipment and storage medium first obtain the power value of the currently received RF signal and the current LNA switch threshold pair; then determine whether the power value is within the interval formed by the current LNA switch threshold pair, which can be regarded as a buffer zone. When the signal power value is within the buffer zone, maintain the original path, that is, maintain the original LNA path or Bypass path, to avoid signal distortion and signal failure caused by cyclic switching of the single threshold; when the original path is a Bypass path, obtain the detection result of the RF signal by the next-level LNA circuit, if the detection result does not meet the preset condition, update the LNA path conduction threshold according to the preset step, obtain a new LNA path conduction threshold and a new LNA switch threshold pair, and switch to the LNA path when the power value is outside the interval formed by the new LNA switch threshold pair. Compared with the fixed dual threshold, the method dynamically adjusts the LNA path conduction threshold through the actually received RF signal and its detection result, avoiding the problem that the signal power is too small but can only continue to maintain the Bypass path according to the preset fixed dual threshold switching mechanism.

[0032] In summary, the present invention combines the dual-threshold switching mechanism of LNA, the gain adjustment mechanism inside the transceiver and the actually received RF signal, and adaptively adjusts the LNA path conduction threshold in the dual-threshold according to actual needs, which not only ensures that the LNA path can be switched in time when the signal power is too small, but also ensures that the path is not frequently switched due to small signal fluctuations to form oscillation, causing signal distortion and affecting the receiving performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic flow chart of an LNA switch switching method in an embodiment;

[0034] Figure 2 A flowchart of a specific implementation of LNA switching in an embodiment;

[0035] Figure 3 is a gain mechanism curve of AD9361 in one embodiment;

[0036] Figure 4 is a structural block diagram of an LNA switch switching device in an embodiment;

[0037] Figure 5 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0038] 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.

[0039] In one embodiment, Figure 1 As shown, a LNA switch switching method is provided, comprising the following steps:

[0040] Step 102: Obtain the power value of the current radio frequency signal.

[0041] The RF signal is obtained by adjusting the received original RF signal through the gain adjustment mechanism inside the transceiver. Correspondingly, the power value is also obtained after adjustment.

[0042] Step 104: Obtain the current LNA switch threshold pair.

[0043] The LNA switch threshold pair includes an LNA path conduction threshold and an LNA path shutoff threshold. The LNA path shutoff threshold is set according to the gain adjustment mechanism, and the LNA path conduction threshold is set according to the gain adjustment mechanism and the power value of the received RF signal. It can be understood that the LNA path shutoff threshold is greater than the LNA path conduction threshold.

[0044] Step 106: When the power value is within the interval formed by the current LNA switch threshold pair, the original path is maintained.

[0045] The original path is an LNA path or a Bypass path.

[0046] Step 108, when the original path is a Bypass path, the detection result of the LNA next-stage circuit on the RF signal is obtained. If the detection result does not meet the preset condition, the LNA path conduction threshold is updated according to the preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair.

[0047] The preset condition means that the signal can be received normally and the performance of the signal remains in good condition.

[0048] Step 110: When the power value is outside the interval formed by the new LNA switch threshold pair, switch to the LNA path.

[0049] The above-mentioned LNA switch switching method first obtains the power value of the currently received RF signal and the current LNA switch threshold pair; then determines whether the power value is within the interval formed by the current LNA switch threshold pair, which can be regarded as a buffer zone. When the signal power value is within the buffer zone, the original path is maintained, that is, the original LNA path or Bypass path is maintained to avoid signal distortion and signal failure caused by cyclic switching of the single threshold; when the original path is the Bypass path, the detection result of the RF signal by the next-level LNA circuit is obtained. If the detection result does not meet the preset condition, the LNA path conduction threshold is updated according to the preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair. When the power value is outside the interval formed by the new LNA switch threshold pair, switch to the LNA path. Compared with the fixed dual threshold, the method dynamically adjusts the LNA path conduction threshold through the actually received RF signal and its detection result, avoiding the problem that the signal power is too small but the Bypass path can only be maintained according to the preset fixed dual threshold switching mechanism.

[0050] In summary, this method combines the dual-threshold switching mechanism of LNA, the gain adjustment mechanism inside the transceiver and the actually received RF signal, and adaptively adjusts the LNA path conduction threshold in the dual threshold according to actual needs, which not only ensures that the LNA path can be switched in time when the signal power is too small, but also ensures that the path is not frequently switched due to small signal fluctuations to form oscillation, causing signal distortion and affecting the receiving performance.

[0051] It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 1 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0052] In one embodiment, when the power value is outside the interval formed by the current LNA switch threshold pair and is less than the current LNA path conduction threshold, if the original path is an LNA path, the original path is maintained; if the original path is a Bypass path, the path is switched to the LNA path.

[0053] When the power value is outside the interval formed by the current LNA switch threshold pair and is greater than the current LNA path shutoff threshold, if the original path is a Bypass path, the original path is maintained; if the original path is an LNA path, it is switched to the Bypass path.

[0054] In one embodiment, when the power value is within the interval formed by the current LNA switch threshold pair, the original path is maintained. When the original path is a bypass path, the detection result of the LNA next-stage circuit on the RF signal is obtained. If the detection result meets the preset condition, the original path is maintained.

[0055] In one embodiment, when the power value is within the interval formed by the new LNA switch threshold pair, the new LNA path conduction threshold is updated according to a preset step until the power value is outside the interval formed by the new LNA switch threshold pair and the LNA path is switched.

[0056] The transceiver can be AD9361, which is a highly integrated RF transceiver with flexible gain control mode integrated in it and supports external control. It is widely used in communication systems. Taking AD9361 as an example, it has a gain adjustment mechanism itself, but considering the actual application, the internal gain of AD9361 is not enough, so an external LNA needs to be added. However, the external LNA is not required in every environment, so channel switching is required. Combining LNA switching with the internal gain adjustment of AD9361 can stabilize the received signal at an appropriate value.

[0057] Assuming that the LNA path is turned on by default, the power value of the received signal is detected and compared with the LNA path shutdown threshold a. When the detected signal power value is relatively large, that is, greater than or equal to a, the system needs to turn off the LNA and switch the path. When the power value is less than a, the LNA path is maintained.

[0058] After closing the LNA path, the power value of the received signal is detected and compared with the LNA path conduction threshold b. When the detected signal power value is relatively small, that is, less than or equal to b, the system needs to open the LNA path and switch to the LNA path. When the power value is not less than b, the original path is still maintained and the LNA path is not opened.

[0059] Because the received signal changes greatly, gain adjustment is necessary, but for small changes in signal amplitude fluctuations, it is not advisable to switch channels frequently. According to the above dual threshold settings, there will be a dynamic range of a to b when switching LNA channels, and frequent switching will not be caused by signal fluctuations. The power judgment valve values ​​a and b cannot be set too large or too small. The threshold setting is related to the receiver performance. When the signal enters AD9361, there is a gain adjustment mechanism inside AD9361 to adjust the signal to a suitable value. This value can be obtained through testing, and this power value is set to threshold a. When the input signal becomes smaller, the internal gain of AD9361 has been adjusted to the maximum. At this time, the detection power value will become smaller. The minimum power required to ensure completely stable reception can be determined through testing. At this time, the external LNA needs to be turned on. This minimum power is set to threshold b. The value of threshold a is fixed, and the value of threshold b can be adjusted dynamically. When the gain of AD9361 has been adjusted to the maximum and the detection power is greater than b, but the signal cannot be received normally or the performance deteriorates, the threshold is adjusted according to a certain step, such as 2db step adjustment, the threshold becomes b+2. Figure 2 As shown, a specific implementation flow chart of LNA switching is provided. The dual threshold setting ensures that the LNA path can be switched in time when the signal power is too small, and also ensures that the path is not frequently switched due to small signal fluctuations, causing oscillation and affecting the receiving performance.

[0060] In one embodiment, the gain adjustment mechanism includes a first gain adjustment mechanism when the LNA path is turned on and a second gain adjustment mechanism when the LNA path is turned off.

[0061] Setting the LNA path shutoff threshold according to a signal power value corresponding to a first preset gain value of the gain adjustment mechanism includes:

[0062] The signal power value corresponding to the minimum Index value in the first gain table corresponding to the first gain adjustment mechanism is used as the LNA path shutoff threshold; the gain table is composed of multiple groups of signal power values ​​and corresponding Index values.

[0063] Before jointly setting the LNA path conduction threshold according to the gain adjustment mechanism and the power value of the received RF signal, it also includes:

[0064] The signal power value corresponding to the minimum Index value in the second gain table corresponding to the second gain adjustment mechanism is used as the initial LNA path conduction threshold.

[0065] The official source code of AD9361 has adjusted the combination of each gain to the best, and fixed it in the program in the form of source code. Through power detection and judgment, a group of appropriate values ​​are selected in the gain table, and the corresponding optimal gain is found by controlling the increase and decrease of the index of the gain table through the program. This method can jointly adjust the LNA switching and the AD9361 gain. Figure 3 As shown in the figure, the AD9361 gain mechanism curve is provided. The horizontal axis is the Index value of the AD9361 gain table, and the vertical axis is the detected received power value. The larger the Index value, the larger the internal adjustment gain of the AD9361. y1 is the power detection value and Index value change curve when the external LNA channel is turned on, and y2 is the power detection value and Index value change curve when the external LNA channel is not turned on.

[0066] At the beginning, the external LNA channel is turned on by default. When it is at point A in the figure, the corresponding Index value is Indexa. When the power is detected to be greater than or equal to a, the external LNA channel will be closed and switched to curve y2. The corresponding Indexa will be adjusted to Indexc, which is the corresponding point B in the figure. The Index value is adjusted according to the y2 curve. When the detected power is not greater than a, the Index value is always adjusted according to the y1 curve, and the channel switching is not performed.

[0067] After switching to the y2 curve at point A, when the detected power is less than or equal to b, the external LNA path will be turned on and switched to curve y1, changing from point D to point C in the figure, and Indexd will be adjusted to Indexb accordingly; when the detected power is greater than b, the Index value will be adjusted according to the y2 curve without channel switching.

[0068] In one embodiment, Figure 4 As shown, an LNA switch switching device is provided, comprising: a signal power value acquisition module, a switch threshold pair acquisition module, a first power value comparison module, a switch threshold pair update module, and a second power value comparison module, wherein:

[0069] The signal power value acquisition module is used to obtain the power value of the current RF signal.

[0070] The RF signal is obtained by adjusting the received original RF signal through the gain adjustment mechanism inside the transceiver;

[0071] The switch threshold pair acquisition module is used to acquire the current LNA switch threshold pair.

[0072] The LNA switch threshold pair includes an LNA path conduction threshold and an LNA path shutoff threshold; the LNA path shutoff threshold is set according to the gain adjustment mechanism; the LNA path conduction threshold is jointly set according to the gain adjustment mechanism and the power value of the received RF signal;

[0073] The first power value comparison module is used to maintain the original path when the power value is within the interval formed by the current LNA switch threshold pair.

[0074] The original path is an LNA path or a Bypass path;

[0075] A switch threshold pair updating module is used to obtain the detection result of the LNA next-level circuit on the RF signal when the original path is a bypass path. If the detection result does not meet the preset condition, the LNA path conduction threshold is updated according to the preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair;

[0076] The second power value comparison module is used to switch to the LNA path when the power value is outside the interval formed by the new LNA switch threshold pair.

[0077] For the specific definition of the LNA switch switching device, please refer to the definition of the LNA switch switching method above, which will not be repeated here. Each module in the above-mentioned LNA switch switching device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0078] 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 5 As shown. The computer device includes a processor, a memory, a network interface and a database 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 signal power values ​​and gain mechanism data. 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 LNA switch switching method is implemented.

[0079] Those skilled in the art will understand that Figure 5 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.

[0080] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method in the above embodiment when executing the computer program.

[0081] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method in the above embodiment are implemented.

[0082] Those skilled 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 include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0083] 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.

[0084] The above-mentioned 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 invention patent. 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 patent of the present application shall be subject to the attached claims.

Claims

1. A LNA switch switching method, characterized in that: The method comprises: Obtaining a power value of a current radio frequency signal; the radio frequency signal is obtained by adjusting the received original radio frequency signal through a gain adjustment mechanism inside the transceiver; Acquire a current LNA switch threshold pair; the LNA switch threshold pair includes an LNA path conduction threshold and an LNA path shutoff threshold; the LNA path shutoff threshold is set according to the gain adjustment mechanism; the LNA path conduction threshold is jointly set according to the gain adjustment mechanism and the power value of the received radio frequency signal; When the power value is within the interval formed by the current LNA switch threshold pair, the original path is maintained; the original path is the LNA path or the Bypass path; When the original path is a Bypass path, a detection result of the LNA next-stage circuit on the radio frequency signal is obtained, and if the detection result does not meet a preset condition, the LNA path conduction threshold is updated according to a preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair; When the power value is outside the interval formed by the new LNA switch threshold pair, switching to the LNA path is performed.

2. The method according to claim 1, characterized in that When the power value is outside the interval formed by the current LNA switch threshold pair and is less than the current LNA path conduction threshold, if the original path is the LNA path, the original path is maintained; if the original path is the Bypass path, the path is switched to the LNA path.

3. The method according to claim 2, characterized in that When the power value is outside the interval formed by the current LNA switch threshold pair and is greater than the current LNA path shutoff threshold, if the original path is a Bypass path, the original path is maintained; if the original path is an LNA path, it is switched to the Bypass path.

4. The method according to claim 3, characterized in that When the original path is a Bypass path, a detection result of the LNA next-stage circuit on the radio frequency signal is obtained, and if the detection result meets a preset condition, the original path is maintained.

5. The method according to claim 4, characterized in that When the power value is within the interval formed by the new LNA switch threshold pair, the new LNA path conduction threshold is updated according to a preset step until the power value is outside the interval formed by the new LNA switch threshold pair and the LNA path is switched.

6. The method according to any one of claims 1 to 5, characterized in that: The gain adjustment mechanism includes a first gain adjustment mechanism when the LNA path is turned on; Setting the LNA path shutoff threshold according to the signal power value corresponding to the first preset gain value of the gain adjustment mechanism includes: Using the signal power value corresponding to the minimum Index value in the first gain table corresponding to the first gain adjustment mechanism as the LNA path shut-off threshold; The gain table consists of multiple groups of signal power values ​​and corresponding Index values.

7. The method according to claim 6, characterized in that The gain adjustment mechanism also includes a second gain adjustment mechanism when the LNA path is turned off; Before jointly setting the LNA path conduction threshold according to the gain adjustment mechanism and the power value of the received RF signal, the method further includes: The signal power value corresponding to the minimum Index value in the second gain table corresponding to the second gain adjustment mechanism is used as the initial LNA path conduction threshold.

8. An LNA switch switching device, characterized in that: The device comprises: A signal power value acquisition module, used to acquire the power value of the current radio frequency signal; the radio frequency signal is obtained by adjusting the received original radio frequency signal through the gain adjustment mechanism inside the transceiver; A switch threshold pair acquisition module, used to acquire a current LNA switch threshold pair; the LNA switch threshold pair includes an LNA path conduction threshold and an LNA path shutdown threshold; the LNA path shutdown threshold is set according to the gain adjustment mechanism; the LNA path conduction threshold is jointly set according to the gain adjustment mechanism and the power value of the received RF signal; A first power value comparison module, configured to maintain an original path when the power value is within the interval formed by the current LNA switch threshold pair; the original path is an LNA path or a Bypass path; A switch threshold pair updating module, configured to obtain, when the original path is a bypass path, a detection result of the LNA next-stage circuit on the radio frequency signal, and if the detection result does not meet a preset condition, update the LNA path conduction threshold according to a preset step to obtain a new LNA path conduction threshold and a new LNA switch threshold pair; The second power value comparison module is used to switch to the LNA path when the power value is outside the interval formed by the new LNA switch threshold pair.

9. 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 7 are implemented.

10. 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 7 are implemented.

Images