Signal power conditioning device and method

Abstract

The present invention provides a signal power conditioning device and method, the device includes: a conditioning module, a storage module and a main control module; the conditioning module is used to attenuate the power of the signal input to the conditioning module to the expected output signal power value set by the user; the storage module is used to store calibration data; the main control module is used to receive the expected output signal power value and signal power conditioning parameters set by the user, read the calibration data in the storage module according to the signal power conditioning parameters, use the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, and control the conditioning module to condition the input signal according to the conditioning value data. The method uses a signal power conditioning device to perform signal power conditioning. The error caused by interference and conditioning parameter differences is greatly eliminated, and the expected output signal power can be obtained more accurately. There is no need to use a spectrum analyzer during the conditioning process, which improves the convenience of signal power conditioning.

Description

Technical Field

[0001] The present invention relates to the technical field of signal power conditioning, and in particular to a signal power conditioning device and method. Background Art

[0002] Because circuits and components will cause fluctuations in signal power, even if the input signal power is a constant, the output power will deviate from the expected power according to the theoretical attenuation value, and the error will be further increased under the influence of different conditioning parameters, such as frequency, temperature, etc. In order to make the output power more accurate, the commonly used signal power conditioning method is to design a conditioning feedback system, measure the output power, calculate its error value, and adjust the conditioning feedback system according to its deviation until the output power reaches the target value within the allowable error range. Specifically:

[0003] The power of the conditioned signal is read by the spectrum analyzer, and then the power value is fed back to the conditioning system. This method can obtain a relatively accurate signal, but the conditioning speed is slow, and the size and weight of the spectrum analyzer are large, which is not conducive to transportation; commercial spectrum analyzers do not fully consider electromagnetic compatibility and environmental adaptability indicators, and cannot meet the requirements of use in complex electromagnetic environments and harsh natural environments. Therefore, the existing conditioning feedback system and conditioning method are difficult to meet work needs. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the prior art, namely, slow conditioning speed, the need to use a spectrum analyzer during the conditioning process, inconvenient operation, and the difficulty of the spectrum analyzer to meet the requirements of use in complex electromagnetic environments and harsh natural environments.

[0005] To this end, a first aspect of the present invention provides a signal power conditioning device.

[0006] A second aspect of the present invention provides a signal power conditioning method.

[0007] The present invention provides a signal power conditioning device, comprising: a conditioning module, a storage module and a main control module;

[0008] The conditioning module is connected to the main control module and is used to attenuate the power of the signal input to the conditioning module to the expected output signal power value set by the user;

[0009] The storage module is connected to the main control module and is used to store calibration data, wherein the calibration data includes attenuation value data and output signal power data of the input signal after being conditioned by the signal power conditioning device under different signal power conditioning parameters;

[0010] The main control module is used to receive the expected output signal power value and signal power conditioning parameters set by the user, read the calibration data in the storage module according to the signal power conditioning parameters, use the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, and control the conditioning module to condition the input signal according to the conditioning value data.

[0011] The present invention provides a signal power conditioning device, wherein the conditioning module is used to attenuate the input signal. A single attenuator or multiple attenuators controlled in series or in parallel may be provided in the conditioning module. Specifically, a chip attenuator such as PE43670 and PE4312 may be used, which replaces the coaxial attenuator used in the past, thereby facilitating the integration and miniaturization of the device.

[0012] The storage module may use NOR FLASH to store the parameters sent by the host computer and the calibration data. The method of obtaining the calibration data is as follows: simulate a number of input signals with different signal power conditioning parameters to enter the conditioning module, the conditioning module attenuates the input signal according to a fixed step attenuation or a specified attenuation, use a spectrum analyzer or other measuring device to measure the actual power of the conditioning module output power, and store the current attenuation and the actual output signal power in the storage module as calibration data;

[0013] The main control module can adopt the STM32F429 micro-main control module, receive the instructions and parameters sent by the host computer, and call the calibration data in the storage module according to the parameters, and control the conditioning module to attenuate the input signal according to the instructions, that is, according to the user's expected output signal power value, search the storage module for the attenuation value data corresponding to the output signal power data that can achieve the same or similar output signal power value under the same or similar signal power conditioning parameters, and control the conditioning module to use the attenuation value data as the attenuation value to condition the input signal, so as to reduce the error caused by signal power fluctuations or different signal power conditioning parameters caused by circuits and components.

[0014] A signal power conditioning device according to the above technical solution of the present invention may also have the following additional technical features:

[0015] In the above technical solution, the main control module uses the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, including: setting the signal power conditioning parameter set by the user as the target value, searching the storage module for the calibration data corresponding to the signal power conditioning parameter that is the same as or closest to the target value, and using the attenuation value data in the calibration data as the conditioning value data corresponding to the expected output signal power value.

[0016] In this technical solution, a large amount of calibration data is stored in a storage module, including output signal power data corresponding to multiple attenuation value data under different signal power conditioning parameters. For example, before leaving the factory, the attenuation value is reduced at different input signal frequencies in steps of 1, 0.5 or 0.25 and the corresponding output signal power data is measured point by point. These data are stored in the storage module to form a data table. After the user inputs the expected output signal power value and the signal power conditioning parameters, the attenuation value corresponding to the expected output signal power value is obtained by looking up the table. When the attenuation value that completely corresponds to the expected output signal power value can be found, the next step is performed with the attenuation value. When the attenuation value that completely corresponds to the expected output signal power value cannot be found, the attenuation value corresponding to the output signal power data closest to the expected output signal power value under the closest signal power conditioning parameters is input into the conditioning module.

[0017] In the above technical solution, the main control module uses the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, including: setting the signal power conditioning parameters set by the user as the target value, searching the storage module for the calibration data corresponding to the signal power conditioning parameters closest to the two ends of the target value, obtaining the linear relationship between the attenuation value data and the output signal power data under the signal power conditioning parameters set by the user, calculating the attenuation value data corresponding to the expected output signal power value, and using the attenuation value data as the conditioning value data.

[0018] In this technical solution, relatively few calibration data can be stored in the storage module, or only the calibration data of some feature points can be stored in the storage module. A two-dimensional model, a three-dimensional model or a multi-dimensional model can be established according to the type of signal power conditioning parameters, and the calibration data are several discrete points in the model; data is searched in the storage module according to the expected output signal power value and the signal power conditioning parameters, and the closest points on both sides of the expected output signal power value under the same or similar signal power conditioning parameters are found. With any type of signal power conditioning parameters as parameters, the calibration data on both sides of the expected output signal power value are fitted into a straight line and regarded as a small section on the output curve. According to the number of types of signal power conditioning parameters, multiple linear equation expressions can be used to obtain the linear relationship between the attenuation value data and the output signal power data under the current signal power conditioning parameters. The corresponding attenuation value can be obtained by substituting the expected output signal power value into the linear relationship, and the control module controls the conditioning module to condition the input signal with the attenuation value.

[0019] In the above technical solution, the signal power conditioning parameters include temperature, input signal frequency and output signal power.

[0020] In this technical solution, the signal power conditioning parameters include three types, namely temperature, input signal frequency and output signal power. The types of signal power conditioning parameters may also be increased according to actual needs or accuracy requirements, such as humidity, input signal power, etc.

[0021] In the above technical solution, the input end of the conditioning module is connected to the input signal, and the conditioning module includes a plurality of attenuators.

[0022] In this technical solution, the conditioning module adopts a multi-stage attenuator, through which a large attenuation and precision control of the input signal can be achieved. Several attenuators can be controlled in series or in parallel. In the case of serial control, several attenuators are connected in sequence to form a multi-stage attenuator, and the first attenuator is connected to the main control module; when several attenuators are controlled in parallel, several attenuators can be connected to the main control module respectively. However, since each attenuator needs to occupy 8 pins, the number of pins of the main control module is limited, which limits the number of attenuators.

[0023] Specifically, a PE43670 attenuator and multiple PE4312 attenuators are used to form a multi-stage attenuator. The minimum attenuation of PE43670 is 0.25, and the minimum attenuation of PE4312 is 0.5; then the minimum attenuation of the entire conditioning module can reach 0.25.

[0024] In the above technical solution, the conditioning module includes a serial-to-parallel unit, and the main control module controls a plurality of attenuators in parallel through the serial-to-parallel unit.

[0025] In this technical solution, the serial-to-parallel unit communicates serially with the main control module, and communicates in parallel with the attenuator; parallel control of several attenuators is achieved through the serial-to-parallel unit, the serial-to-parallel unit is connected to the main control module, and several attenuators are connected to the serial-to-parallel unit.

[0026] In the above technical solution, the serial-to-parallel unit includes a plurality of serial-to-parallel chips, the plurality of serial-to-parallel chips are connected to a plurality of attenuators in a one-to-one correspondence, and the plurality of attenuators are connected in series in sequence.

[0027] In this technical solution, the serial-to-parallel chip can be a 74hc595 chip. Several 74hc595 chips are connected in sequence. The first 74hc595 chip is connected to the main control module, which only occupies 3 pins. Several 74hc595 chips are respectively connected to several attenuators in a one-to-one correspondence, and several attenuators are connected in series in sequence. At this time, the main control module only needs three wires, that is, three pins, to complete the control of the multi-stage attenuator. Only the pins of the main control module need to correctly simulate the level conversion to achieve data injection. A 74hc595 chip has 8 data storage bits. If 9 bits of data are injected, the original first bit of data will overflow to the next 74hc595. In this way, multiple levels of 74hc595 can be controlled, and the more serial-to-parallel bits, the higher the integration. 74hc595 is connected to the attenuator in a parallel control mode. As long as there is enough space, the number of controlled attenuators can be increased.

[0028] In any of the above technical solutions, an interface module for data interaction with a host computer is also included, and the interface module is connected to the main control module.

[0029] In this technical solution, the main control module realizes data interaction with the host computer through the interface module. The interface module is used to provide a communication interface, such as an RS422 communication interface, which can not only obtain the instructions and parameters sent by the host computer, but also provide feedback information to the host computer.

[0030] The present invention also provides a signal power conditioning method, which uses a signal power conditioning device as described in any of the above technical solutions, and includes the following steps:

[0031] S1, simulate input signal, make signal power conditioning equipment use several attenuation amounts to condition input signal under different signal power conditioning parameters and measure output signal power;

[0032] S2, storing the output signal powers corresponding to the different attenuation amounts in S1 and the corresponding signal power conditioning parameters in the signal power conditioning device as calibration data;

[0033] S3, connecting the input signal to the signal power conditioning device, and setting the signal power conditioning parameters, reading the calibration data in the signal power conditioning device according to the signal power conditioning parameters, and using the calibration data to obtain the conditioning value data corresponding to the expected output signal power value;

[0034] S4. Condition the input signal according to the conditioning value data and output the result.

[0035] The present invention provides a signal power conditioning method, which connects a signal power conditioning device to a host computer, a signal source and a spectrum analyzer respectively; uses a signal source to simulate an input signal and inputs it into the signal power conditioning device, sets a signal power conditioning parameter in the host computer, and the host computer sends an instruction to make the signal power conditioning device attenuate the input signal according to a fixed step attenuation amount, measures the output signal power through the spectrum analyzer and sends it to the host computer, and the host computer stores the current attenuation amount and the output signal power and the signal power conditioning parameter in a storage module of the signal power conditioning device as calibration data; in this way, interference of a part of the circuit of the signal power conditioning device is isolated;

[0036] The current signal power conditioning parameters are set in the host computer: including temperature, input signal frequency and output signal power, etc. The input signal is connected to the signal power conditioning device. The main control module searches for the calibration data corresponding to the current signal power conditioning parameters and the expected output signal power in the storage module according to the instructions sent by the host computer. The same or similar calibration data can be found by directly looking up the table and used directly as the conditioning value data. Alternatively, the calibration data points closest to the current signal power conditioning parameters and the expected output signal power can be found, and the discrete calibration data points can be fitted into a straight line. The straight line is regarded as a small section on the output curve. The linear relationship between the output signal power data and the attenuation value data near the expected output signal power value under the current signal power conditioning parameters is obtained through multiple straight line equation expressions. The corresponding attenuation value can be obtained by substituting the expected output signal power into the corresponding attenuation value.

[0037] In the above technical solution, the signal power conditioning parameters include temperature, input signal frequency and output signal power, and obtaining the conditioning value data corresponding to the expected output signal power value using the calibration data in S3 includes:

[0038] S31, searching in the calibration data for the output signal power value closest to the desired output signal power value and its corresponding attenuation value, the temperature value closest to the temperature input by the user and its corresponding attenuation value, and the input signal frequency closest to the input signal frequency input by the user and its corresponding attenuation value;

[0039] S32, establishing a linear relationship between the attenuation value and the output signal power at the same temperature and the same input signal frequency;

[0040] S33, according to the linear relationship between the attenuation value and the output signal power established in S32, at the same temperature, establish a linear relationship between the attenuation value and the input signal frequency;

[0041] S34, establishing a linear relationship between the attenuation value and the input signal frequency according to the linear relationship between the attenuation value and the input signal frequency established in S33, and finally obtaining a linear relationship between the attenuation value and the expected output signal power value;

[0042] S35. Calculate the attenuation value corresponding to the expected output signal power value according to S34.

[0043] In summary, due to the adoption of the above technical features, the beneficial effects of the present invention are:

[0044] Provided are a signal power conditioning device and method. The device has a simple structure, and the power loss of the signal during the conditioning process is small. The entire device is light in weight and small in size, has good electromagnetic compatibility and resistance to harsh environments, greatly eliminates errors caused by interference and conditioning parameter differences, and can more accurately obtain the expected output signal power. During the conditioning process, there is no need to use a spectrum analyzer, which reduces complicated operating steps and improves the convenience of signal power conditioning. At the same time, the conditioning module adopts a multi-stage attenuator, which increases the use range of the device, has high sensitivity, and a stable output signal, so that the output small signal can be stabilized within ±1dB near the sensitivity.

[0045] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0047] Figure 1 is a module schematic diagram of a signal power conditioning device according to an embodiment of the present invention;

[0048] Figure 2 It is a schematic diagram of modules when a signal power conditioning device acquires calibration data according to an embodiment of the present invention;

[0049] Figure 3 It is a structural schematic diagram of a conditioning module in a signal power conditioning device according to an embodiment of the present invention;

[0050] Figure 4 It is a principle diagram of establishing a linear relationship between an attenuation value and an expected output signal power value in a signal power conditioning method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0053] Refer to the following Figures 1 to 4 A signal power conditioning device and method according to some embodiments of the present invention are described.

[0054] Some embodiments of the present application provide a signal power conditioning device.

[0055] like Figures 1 to 4 As shown, the first embodiment of the present invention provides a signal power conditioning device, including: a conditioning module, a storage module and a main control module;

[0056] The conditioning module is connected to the main control module and is used to attenuate the power of the signal input to the conditioning module to the expected output signal power value set by the user;

[0057] The storage module is connected to the main control module and is used to store calibration data, wherein the calibration data includes attenuation value data and output signal power data of the input signal after being conditioned by the signal power conditioning device under different signal power conditioning parameters;

[0058] The main control module is used to receive the expected output signal power value and signal power conditioning parameters set by the user, read the calibration data in the storage module according to the signal power conditioning parameters, use the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, and control the conditioning module to condition the input signal according to the conditioning value data.

[0059] The signal power conditioning device proposed in this embodiment, the conditioning module is used to attenuate the input signal, a single attenuator or multiple attenuators controlled in series or in parallel can be set in the conditioning module, and a chip attenuator such as PE43670 and PE4312 can be used to replace the coaxial attenuator used in the past, which is convenient for device integration and miniaturization;

[0060] The storage module may use NOR FLASH to store the parameters sent by the host computer and the calibration data. The method of obtaining the calibration data is as follows: simulate a number of input signals with different signal power conditioning parameters to enter the conditioning module, the conditioning module attenuates the input signal according to a fixed step attenuation or a specified attenuation, use a spectrum analyzer or other measuring device to measure the actual power of the conditioning module output power, and store the current attenuation and the actual output signal power in the storage module as calibration data;

[0061] The main control module can adopt the STM32F429 micro-main control module, receive the instructions and parameters sent by the host computer, and call the calibration data in the storage module according to the parameters, and control the conditioning module to attenuate the input signal according to the instructions, that is, according to the user's expected output signal power value, search the storage module for the attenuation value data corresponding to the output signal power data that can achieve the same or similar output signal power value under the same or similar signal power conditioning parameters, and control the conditioning module to use the attenuation value data as the attenuation value to condition the input signal, so as to reduce the error caused by signal power fluctuations or different signal power conditioning parameters caused by circuits and components.

[0062] The second embodiment of the present invention provides a signal power conditioning device, and based on the first embodiment, as Figures 1 to 4 As shown, the main control module uses the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, including: setting the signal power conditioning parameter set by the user as the target value, searching the storage module for the calibration data corresponding to the signal power conditioning parameter that is the same as or closest to the target value, and using the attenuation value data in the calibration data as the conditioning value data corresponding to the expected output signal power value.

[0063] In this embodiment, a large amount of calibration data is stored in the storage module, including output signal power data corresponding to multiple attenuation value data under different signal power conditioning parameters. For example, before leaving the factory, the attenuation value is reduced at different input signal frequencies in steps of 1, 0.5 or 0.25 and the corresponding output signal power data is measured point by point. These data are stored in the storage module to form a data table. After the user inputs the expected output signal power value and the signal power conditioning parameters, the attenuation value corresponding to the expected output signal power value is obtained by looking up the table. When the attenuation value that completely corresponds to the expected output signal power value can be found, the next step is performed with the attenuation value. When the attenuation value that completely corresponds to the expected output signal power value cannot be found, the attenuation value corresponding to the output signal power data closest to the expected output signal power value under the closest signal power conditioning parameters is input into the conditioning module.

[0064] A third embodiment of the present invention provides a signal power conditioning device, and based on any of the above embodiments, as Figures 1 to 4 As shown, the main control module uses the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, including: setting the signal power conditioning parameters set by the user as the target value, searching the storage module for the calibration data corresponding to the signal power conditioning parameters closest to the two ends of the target value, obtaining the linear relationship between the attenuation value data and the output signal power data under the signal power conditioning parameters set by the user, calculating the attenuation value data corresponding to the expected output signal power value, and using the attenuation value data as the conditioning value data.

[0065] In this embodiment, a relatively small amount of calibration data can be stored in the storage module, or only the calibration data of some feature points can be stored in the storage module. A two-dimensional model, a three-dimensional model or a multi-dimensional model can be established according to the type of signal power conditioning parameters, and the calibration data are a number of discrete points in the model; data is searched in the storage module according to the expected output signal power value and the signal power conditioning parameters, and the closest points on both sides of the expected output signal power value under the same or similar signal power conditioning parameters are found. With any type of signal power conditioning parameters as parameters, the calibration data on both sides of the expected output signal power value are fitted into a straight line and regarded as a small section on the output curve. According to the number of types of signal power conditioning parameters, a linear relationship between the attenuation value data and the output signal power data under the current signal power conditioning parameters can be obtained by using multiple linear equation expressions. The corresponding attenuation value can be obtained by substituting the expected output signal power value into the linear relationship, and the control module controls the conditioning module to condition the input signal with the attenuation value.

[0066] A fourth embodiment of the present invention provides a signal power conditioning device, and based on any of the above embodiments, as Figures 1 to 4 As shown, the signal power conditioning parameters include temperature, input signal frequency and output signal power.

[0067] In this embodiment, the signal power conditioning parameters include three types, namely temperature, input signal frequency and output signal power. Additional types of signal power conditioning parameters may be added according to actual needs or accuracy requirements, such as humidity, input signal power, etc.

[0068] A fifth embodiment of the present invention provides a signal power conditioning device, and based on any of the above embodiments, as Figures 1 to 4 As shown, the input end of the conditioning module is connected to the input signal, and the conditioning module includes a plurality of attenuators.

[0069] In this embodiment, the conditioning module uses a multi-stage attenuator, and a large attenuation and precision control of the input signal can be achieved through multiple attenuators. Several attenuators can be controlled in series or in parallel. In the case of serial control, several attenuators are connected in sequence to form a multi-stage attenuator, and the first attenuator is connected to the main control module; when several attenuators are controlled in parallel, several attenuators can be connected to the main control module respectively. However, since each attenuator needs to occupy 8 pins, the number of pins of the main control module is limited, which limits the number of attenuators;

[0070] Specifically, a PE43670 attenuator and multiple PE4312 attenuators are used to form a multi-stage attenuator. The minimum attenuation of PE43670 is 0.25, and the minimum attenuation of PE4312 is 0.5; then the minimum attenuation of the entire conditioning module can reach 0.25.

[0071] A sixth embodiment of the present invention provides a signal power conditioning device, and based on any of the above embodiments, as Figures 1 to 4 As shown, the conditioning module includes a serial-to-parallel unit, and the main control module controls a plurality of attenuators in parallel through the serial-to-parallel unit.

[0072] In this embodiment, the serial-to-parallel unit communicates serially with the main control module, and communicates in parallel with the attenuator; parallel control of several attenuators is achieved through the serial-to-parallel unit, the serial-to-parallel unit is connected to the main control module, and several attenuators are connected to the serial-to-parallel unit.

[0073] A seventh embodiment of the present invention provides a signal power conditioning device, and based on any of the above embodiments, as Figures 1 to 4 As shown, the serial-to-parallel unit includes a plurality of serial-to-parallel chips, the plurality of serial-to-parallel chips are connected to a plurality of attenuators in a one-to-one correspondence, and the plurality of attenuators are connected in series in sequence.

[0074] In this embodiment, the serial-to-parallel chip can be a 74hc595 chip. Several 74hc595 chips are connected in sequence. The first 74hc595 chip is connected to the main control module, which only occupies 3 pins. Several 74hc595 chips are respectively connected to several attenuators in a one-to-one correspondence, and several attenuators are connected in series in sequence. At this time, the main control module only needs three wires, that is, three pins, to complete the control of the multi-stage attenuator. Only the pins of the main control module need to correctly simulate the level conversion to achieve data injection. A 74hc595 chip has 8 data storage bits. If 9 bits of data are injected, the original first bit of data will overflow to the next 74hc595. In this way, multiple 74hc595s can be controlled, and the more serial-to-parallel bits, the higher the integration. 74hc595 is connected to the attenuator in a parallel control mode. As long as there is enough space, the number of controlled attenuators can be increased.

[0075] The eighth embodiment of the present invention provides a signal power conditioning device, and based on any of the above embodiments, as Figures 1 to 4 As shown, it also includes an interface module for data interaction with a host computer, and the interface module is connected to the main control module.

[0076] In this embodiment, the main control module realizes data interaction with the host computer through the interface module. The interface module is used to provide a communication interface, such as an RS422 communication interface, which can not only obtain instructions and parameters sent by the host computer, but also provide feedback information to the host computer.

[0077] Some embodiments of the present invention provide a signal power conditioning method.

[0078] The ninth embodiment of the present invention provides a signal power conditioning method, and based on any of the above embodiments, as Figures 1 to 4 As shown, a signal power conditioning device as described in any of the above embodiments is used, including the following steps:

[0079] S1, simulate input signal, make signal power conditioning equipment use several attenuation amounts to condition input signal under different signal power conditioning parameters and measure output signal power;

[0080] S2, storing the output signal powers corresponding to the different attenuation amounts in S1 and the corresponding signal power conditioning parameters in the signal power conditioning device as calibration data;

[0081] S3, connecting the input signal to the signal power conditioning device, and setting the signal power conditioning parameters, reading the calibration data in the signal power conditioning device according to the signal power conditioning parameters, and using the calibration data to obtain the conditioning value data corresponding to the expected output signal power value;

[0082] S4. Condition the input signal according to the conditioning value data and output the result.

[0083] The present invention provides a signal power conditioning method, which connects a signal power conditioning device to a host computer, a signal source and a spectrum analyzer respectively; uses a signal source to simulate an input signal and inputs it into the signal power conditioning device, sets a signal power conditioning parameter in the host computer, and the host computer sends an instruction to make the signal power conditioning device attenuate the input signal according to a fixed step attenuation amount, measures the output signal power through the spectrum analyzer and sends it to the host computer, and the host computer stores the current attenuation amount and the output signal power and the signal power conditioning parameter in a storage module of the signal power conditioning device as calibration data; in this way, interference of a part of the circuit of the signal power conditioning device is isolated;

[0084] The current signal power conditioning parameters are set in the host computer: including temperature, input signal frequency and output signal power, etc. The input signal is connected to the signal power conditioning device. The main control module searches for the calibration data corresponding to the current signal power conditioning parameters and the expected output signal power in the storage module according to the instructions sent by the host computer. The same or similar calibration data can be found by directly looking up the table and used directly as the conditioning value data. Alternatively, the calibration data points closest to the current signal power conditioning parameters and the expected output signal power can be found, and the discrete calibration data points can be fitted into a straight line. The straight line is regarded as a small section on the output curve. The linear relationship between the output signal power data and the attenuation value data near the expected output signal power value under the current signal power conditioning parameters is obtained through multiple straight line equation expressions. The corresponding attenuation value can be obtained by substituting the expected output signal power into the corresponding attenuation value.

[0085] The tenth embodiment of the present invention provides a signal power conditioning method, and based on any of the above embodiments, as Figures 1 to 4 As shown, the signal power conditioning parameters include temperature, input signal frequency and output signal power, and obtaining conditioning value data corresponding to the expected output signal power value using calibration data in S3 includes:

[0086] S31, searching in the calibration data for the output signal power value closest to the desired output signal power value and its corresponding attenuation value, the temperature value closest to the temperature input by the user and its corresponding attenuation value, and the input signal frequency closest to the input signal frequency input by the user and its corresponding attenuation value;

[0087] S32, establishing a linear relationship between the attenuation value and the output signal power at the same temperature and the same input signal frequency;

[0088] S33, according to the linear relationship between the attenuation value and the output signal power established in S32, at the same temperature, establish a linear relationship between the attenuation value and the input signal frequency;

[0089] S34, establishing a linear relationship between the attenuation value and the input signal frequency according to the linear relationship between the attenuation value and the input signal frequency established in S33, and finally obtaining a linear relationship between the attenuation value and the expected output signal power value;

[0090] S35. Calculate the attenuation value corresponding to the expected output signal power value according to S34.

[0091] Figure 4 A schematic diagram for establishing a linear relationship between an attenuation value and an expected output signal power value in conditioning value data corresponding to an expected output signal power value obtained by using calibration data, wherein:

[0092] f in The input signal frequency set by the user; p in The expected output signal power value set by the user; T in The current ambient temperature or the set ambient temperature;

[0093] According to step S31, find the calibration data of the storage module corresponding to T in The temperatures closest to the two ends are T1 and T2; at T1, the temperature is in The input signal frequency closest to both ends is f 11 and f 12 ; At temperature T2, with f in The input signal frequency closest to both ends is f 21 and f 22 ;

[0094] When the temperature is T1 and the input signal frequency is f 11When, with p in The output signal power value closest to the two ends is p 111 and p 112 , p 111 and p 112 The corresponding attenuation values ​​are a 111 and a 112 ;

[0095] When the temperature is T1 and the input signal frequency is f 12 When, with p in The output signal power value closest to the two ends is p 121 and p 122 , p 121 and p 122 The corresponding attenuation values ​​are a 121 and a 122 ;

[0096] When the temperature is T2 and the input signal frequency is f 21 When, with p in The output signal power value closest to the two ends is p 211 and p 212 , p 211 and p 212 The corresponding attenuation values ​​are a 211 and a 212 ;

[0097] When the temperature is T2 and the input signal frequency is f 22 When, with p in The output signal power value closest to the two ends is p 221 and p 222 , p 221 and p 222 The corresponding attenuation values ​​are a 221 and a 222 ;

[0098] Then, in step S32, the linear relationships between the attenuation value and the output signal power at different temperatures and input signal frequencies are:

[0099]

[0100]

[0101]

[0102]

[0103] Among them, a′ 11 When the temperature is T1 and the input signal frequency is f 11 When p in The corresponding attenuation value; a′12 When the temperature is T1 and the input signal frequency is f 12 When p in The corresponding attenuation value; a′ 21 When the temperature is T2 and the input signal frequency is f 21 When p in The corresponding attenuation value; a′ 22 When the temperature is T2 and the input signal frequency is f 22 When p in The corresponding attenuation value.

[0104] In step S33, at the same temperature, the linear relationship between the attenuation value and the input signal frequency is:

[0105]

[0106]

[0107] Where a″1 is the temperature T1 and the input signal frequency f in When p in The corresponding attenuation value; a″2 is when the temperature is T2 and the input signal frequency is f in When p in The corresponding attenuation value.

[0108] In step S34, a linear relationship between the attenuation value and the temperature is established, and the linear relationship between the attenuation value and the expected output signal power value is obtained as follows:

[0109]

[0110] Among them, a out That is, at temperature T in , the input signal frequency is f in When the expected output signal power value p in The corresponding attenuation value.

[0111] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0112] Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A signal power conditioning device, characterized in that: include: Conditioning module, storage module and main control module; The conditioning module is connected to the main control module and is used to attenuate the power of the signal input to the conditioning module to the expected output signal power value set by the user; The storage module is connected to the main control module and is used to store calibration data, wherein the calibration data includes attenuation value data and output signal power data of the input signal after being conditioned by the signal power conditioning device under different signal power conditioning parameters; wherein the signal power conditioning parameters include temperature, input signal frequency and output signal power; A main control module, used to receive the expected output signal power value and signal power conditioning parameters set by the user, read the calibration data in the storage module according to the signal power conditioning parameters, obtain the conditioning value data corresponding to the expected output signal power value using the calibration data, and control the conditioning module to condition the input signal according to the conditioning value data; The main control module uses the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, including: setting the signal power conditioning parameters set by the user as the target value, searching the storage module for the calibration data corresponding to the signal power conditioning parameters closest to the two ends of the target value, obtaining the linear relationship between the attenuation value data and the output signal power data under the signal power conditioning parameters set by the user, calculating the attenuation value data corresponding to the expected output signal power value, and using the attenuation value data as the conditioning value data.

2. A signal power conditioning device according to claim 1, characterized in that: The input end of the conditioning module is connected to the input signal, and the conditioning module includes a plurality of attenuators.

3. A signal power conditioning device according to claim 2, characterized in that: The conditioning module comprises a serial-to-parallel unit, and the main control module controls a plurality of attenuators in parallel via the serial-to-parallel unit.

4. A signal power conditioning device according to claim 3, characterized in that: The serial-to-parallel unit includes a plurality of serial-to-parallel chips, the plurality of serial-to-parallel chips are connected to a plurality of attenuators in a one-to-one correspondence, and the plurality of attenuators are connected in series in sequence.

5. A signal power conditioning device according to any one of claims 1 to 4, characterized in that: It also includes an interface module for data interaction with a host computer, and the interface module is connected to the main control module.

6. A signal power conditioning device, characterized in that: include: Conditioning module, storage module and main control module; The conditioning module is connected to the main control module and is used to attenuate the power of the signal input to the conditioning module to the expected output signal power value set by the user; The storage module is connected to the main control module and is used to store calibration data, wherein the calibration data includes attenuation value data and output signal power data of the input signal after being conditioned by the signal power conditioning device under different signal power conditioning parameters; wherein the signal power conditioning parameters include temperature, input signal frequency and output signal power; A main control module, used to receive the expected output signal power value and signal power conditioning parameters set by the user, read the calibration data in the storage module according to the signal power conditioning parameters, obtain the conditioning value data corresponding to the expected output signal power value using the calibration data, and control the conditioning module to condition the input signal according to the conditioning value data; The main control module uses the calibration data to obtain the conditioning value data corresponding to the expected output signal power value, including: setting the signal power conditioning parameter set by the user as the target value, searching the storage module for the calibration data corresponding to the signal power conditioning parameter that is the same as or closest to the target value, and using the attenuation value data in the calibration data as the conditioning value data corresponding to the expected output signal power value.

7. A signal power conditioning method, characterized in that: Using a signal power conditioning device as described in any one of claims 1 to 5 to perform signal power conditioning, comprising the following steps: S1, simulate input signal, make signal power conditioning equipment use several attenuation amounts to condition input signal under different signal power conditioning parameters and measure output signal power; S2, storing the output signal powers corresponding to the different attenuation amounts in S1 and the corresponding signal power conditioning parameters in the signal power conditioning device as calibration data; S3, connecting the input signal to the signal power conditioning device, and setting the signal power conditioning parameters, reading the calibration data in the signal power conditioning device according to the signal power conditioning parameters, and using the calibration data to obtain the conditioning value data corresponding to the expected output signal power value; S4. Condition the input signal according to the conditioning value data and output the result.

8. A signal power conditioning method according to claim 7, characterized in that: The signal power conditioning parameters include temperature, input signal frequency and output signal power. The conditioning value data corresponding to the expected output signal power value obtained by using the calibration data in S3 includes: S31, searching in the calibration data for the output signal power value closest to the desired output signal power value and its corresponding attenuation value, the temperature value closest to the temperature input by the user and its corresponding attenuation value, and the input signal frequency closest to the input signal frequency input by the user and its corresponding attenuation value; S32, establishing a linear relationship between the attenuation value and the output signal power at the same temperature and the same input signal frequency; S33, according to the linear relationship between the attenuation value and the output signal power established in S32, at the same temperature, establish a linear relationship between the attenuation value and the input signal frequency; S34, establishing a linear relationship between the attenuation value and the input signal frequency according to the linear relationship between the attenuation value and the input signal frequency established in S33, and finally obtaining a linear relationship between the attenuation value and the expected output signal power value; S35. Calculate the attenuation value corresponding to the expected output signal power value according to S34.

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