Power control method and system for ultra-wideband power amplifier

Abstract

The invention provides a power control method for an ultra-wideband power amplifier. The power control method comprises a characteristic value matching control process, a detection control process and a multi-stage attenuator circulation control process, if the current power value difference is greater than five times of the precision value, entering a first-stage attenuator circulation control process, providing a first-stage attenuation amount, and enabling the current power value to approach to target output power, entering a second-stage attenuator circulation control process, and entering a second-stage attenuator circulation control process, if the current power value difference is greater than five times of the precision value; if the current power value difference is greater than the precision value and less than or equal to five times of the precision value, entering a secondary attenuator cycle control process, providing a secondary attenuation amount, and enabling the current power value to approach target output power; and if the current power value difference is less than or equal to the precision value, entering a report control process, reporting the current power value and the attenuation amount, and ending the process. According to the method, the multi-stage numerical control attenuators are adopted, and different numerical control attenuators are called through different power difference values to achieve the purposes of matching application and rapid convergence.

Description

Technical Field

[0001] The present invention relates to, in particular, a power control method and system for an ultra-wideband power amplifier, and more particularly, to a high-precision, low-delay power control method for an ultra-wideband power amplifier. Background Art

[0002] With the development of weapons and equipment, especially in the continuous deepening and expansion of the electromagnetic field, in the modern battlefield environment, the electromagnetic spectrum presents typical characteristics such as complex and diverse, and a wide frequency range. In order to meet the needs of complex electromagnetic environment simulation, ultra-wideband, or UMB, power amplifiers have become necessary RF components. In order to meet the highly realistic requirements of complex electromagnetic environment simulation, the ultra-wideband power amplifier control system needs to have the characteristics of high precision and low latency.

[0003] In the power control design and application of ultra-wideband power amplifiers, control accuracy and convergence time are two important considerations that directly affect the performance and efficiency of the system.

[0004] At present, in the existing technical solutions, the power control of ultra-wideband power amplifiers generally presents the characteristics of low latency but low precision, or high precision but high latency, and it is difficult to have both. For example, patent document CN104242835A discloses an ultra-short wave radio ALC control system and method based on FPGA. In this solution, the A / D converter is limited to the ultra-short wave frequency band, and the single AD supports a narrow bandwidth, usually not exceeding 1GHz, which cannot adapt to power detection with a large frequency range and large bandwidth.

[0005] This problem needs to be solved urgently. Summary of the invention

[0006] In view of the defects in the prior art, an object of the present invention is to provide a power control method and system for an ultra-wideband power amplifier.

[0007] A power control method for an ultra-wideband power amplifier provided by the present invention includes: a characteristic value matching control process, a detection control process, and a multi-stage attenuator cycle control process; the multi-stage attenuator cycle control process includes a primary attenuator cycle control process, a secondary attenuator cycle control process, and a reporting control process;

[0008] After the characteristic value matching control process is completed, the detection control process is entered to compare the current power value difference of the system with the accuracy value;

[0009] If the current power value difference is greater than five times the accuracy value, the first-stage attenuator loop control process is entered to provide a first-stage attenuation amount so that the current power value approaches the target output power;

[0010] If the current power value difference is greater than the precision value and less than or equal to five times of the precision value, the secondary attenuator loop control process is entered to provide a secondary attenuation amount so that the current power value approaches the target output power;

[0011] If the current power value difference is less than or equal to the accuracy value, the reporting control process is entered to report the current power value and attenuation, and the process ends;

[0012] The current power difference is the current power and the target power P t The difference.

[0013] Preferably, the feature value matching control process includes:

[0014] Step A1: Establish a power amplifier characteristic value comparison table based on actual measurement data;

[0015] Step A2: Obtain control parameters, i.e. target frequency F t With the target power P t ;

[0016] Step A3: According to the target frequency F t , find the closest frequency point F from the power amplifier characteristic value comparison table i ; According to the target power P t , find the closest power point P from the power amplifier characteristic value comparison table i ;

[0017] Step A4: According to the frequency point F i , power point P i Find the corresponding attenuation ATT in the power amplifier characteristic value comparison table i ; According to the attenuation ATT i , perform attenuation control on the first-stage digital controlled attenuator;

[0018] Wherein, the power amplifier characteristic value comparison table is [F n ,P m ,ATT,V],Table,F n Indicates frequency, P m Indicates the output power required by the power amplifier, ATT indicates the attenuation, and V indicates the voltage value;

[0019] Find the frequency point F i The basis is:

[0020] abs(F t -F i )≤FStep / 2

[0021] Where abs means taking the absolute value operation, and FStep means the stepping of frequency F;

[0022] Find the power point P i The basis is:

[0023] abs(P t -P i )≤PStep / 2

[0024] Wherein, PStep represents the step of power P.

[0025] Preferably, the detection control process includes:

[0026] Step B1: Get the current power amplifier voltage value V from the detector now ;

[0027] Step B2: According to the voltage value V now , searching the corresponding current power value from the power amplifier characteristic value comparison table;

[0028] Step B3: Compare the current power value, i.e., P now With the precision value, that is, P a size;

[0029] abs(P now -P t )>P a ×5, then enter the first-stage attenuator loop control process;

[0030] P a <abs(P now -P t )≤P a ×5, then enter the secondary attenuator loop control process;

[0031] abs(P now -P t )≤P a , then enter the reporting control process;

[0032] The detector has a detection range of 0 to 40 GHz.

[0033] Preferably, the first-stage attenuator loop control process includes:

[0034] Step C1: Enable the first-stage digital controlled attenuator to provide the first-stage attenuation. now Approaching target power P t ;

[0035] Step C2: re-execute the step B1;

[0036] The secondary attenuator cycle control process includes:

[0037] Step D1: Enable the secondary digital attenuator to provide a secondary attenuation value, so that the P now Approaching target power P t ;

[0038] Step D2: re-execute the step B1;

[0039] The reporting control process is to report the current power value and the attenuation of each level of digitally controlled attenuators, and then end the process.

[0040] Preferably, in step C1, the mathematical expression of the first-order attenuation is:

[0041] ATT1=mod(abs(P now -P t ), ATTStep1)×ATTStep1

[0042] Among them, ATT1 represents the first-stage attenuation; mod represents the modulo operation, and ATTStep2 represents the step of the first-stage digital controlled attenuator;

[0043] In step D1, the mathematical expression of the secondary attenuation is:

[0044] ATT2=mod(abs(P now -P t ), ATTStep2)×ATTStep2

[0045] Among them, ATT2 represents the second-stage attenuation; mod represents the modulo operation; and ATTStep2 represents the step of the second-stage attenuator.

[0046] A power control system of an ultra-wideband power amplifier provided by the present invention comprises: a characteristic value matching control module, a detection control module, and a multi-stage attenuator cycle control module; the multi-stage attenuator cycle control module comprises a primary attenuator cycle control module, a secondary attenuator cycle control module, and a reporting control module;

[0047] The characteristic value matching control module triggers the detection control module to work and compares the current power value difference of the system with the accuracy value;

[0048] If the current power value difference is greater than five times of the accuracy value, the first-stage attenuator cycle control module is triggered to operate, providing a first-stage attenuation amount to make the current power value approach the target output power;

[0049] If the current power value difference is greater than the precision value and less than or equal to five times of the precision value, the secondary attenuator cycle control module is triggered to operate and provide a secondary attenuation amount to make the current power value approach the target output power;

[0050] If the current power value difference is less than or equal to the accuracy value, the reporting control module is triggered to work, and the current power value and attenuation are reported, and the process ends;

[0051] The current power difference is the current power and the target power P t The difference.

[0052] Preferably, the feature value matching control module includes:

[0053] Module A1: Establish a comparison table of power amplifier characteristic values ​​based on actual measurement data;

[0054] Module A2: Get control parameters, i.e. target frequency F t With the target power P t ;

[0055] Module A3: According to the target frequency F t , find the closest frequency point F from the power amplifier characteristic value comparison table i ; According to the target power P t , find the closest power point P from the power amplifier characteristic value comparison table i ;

[0056] Module A4: According to the frequency point F i , power point P i Find the corresponding attenuation ATT in the power amplifier characteristic value comparison table i ; According to the attenuation ATT i , perform attenuation control on the first-stage digital controlled attenuator;

[0057] Wherein, the power amplifier characteristic value comparison table is [F n ,P m ,ATT,V],Table,F n Indicates frequency, P m Indicates the output power required by the power amplifier, ATT indicates the attenuation, and V indicates the voltage value;

[0058] Find the frequency point F i The basis is:

[0059] abs(F t -F i )≤FStep / 2

[0060] Where abs means taking the absolute value operation, and FStep means the stepping of frequency F;

[0061] Find the power point P i The basis is:

[0062] abs(P t -P i)≤PStep / 2

[0063] Wherein, PStep represents the step of power P.

[0064] Preferably, the detection control module includes:

[0065] Module B1: Get the current power amplifier voltage value V from the detector now ;

[0066] Module B2: According to the voltage value V now , searching the corresponding current power value from the power amplifier characteristic value comparison table;

[0067] Module B3: Compare the current power value, i.e. P now With the precision value, that is, P a size;

[0068] abs(P now -P t )>P a ×5, then enter the first-stage attenuator cycle control module;

[0069] P a <abs(P now -P t )≤P a ×5, then enter the secondary attenuator loop control module;

[0070] abs(P now -P t )≤P a , then enter the reporting control module;

[0071] The detector has a detection range of 0 to 40 GHz.

[0072] Preferably, the primary attenuator cycle control module comprises:

[0073] Module C1: Enable the first-level digital attenuator to provide the first-level attenuation. now Approaching target power P t ;

[0074] Module C2: re-execute the module B1;

[0075] The secondary attenuator cycle control module comprises:

[0076] Module D1: Enable the secondary digital attenuator to provide secondary attenuation. now Approaching target power P t ;

[0077] Module D2: re-execute the module B1;

[0078] The reporting control module reports the current power value and the attenuation of each level of digitally controlled attenuators, and ends.

[0079] Preferably, in the module C1, the mathematical expression of the primary attenuation is:

[0080] ATT1=mod(abs(P now -P t ), ATTStep1)×ATTStep1

[0081] Among them, ATT1 represents the first-stage attenuation; mod represents the modulo operation, and ATTStep2 represents the step of the first-stage digital controlled attenuator;

[0082] In the module D1, the mathematical expression of the secondary attenuation is:

[0083] ATT2=mod(abs(P now -P t ), ATTStep2)×ATTStep2

[0084] Among them, ATT2 represents the second-stage attenuation; mod represents the modulo operation; and ATTStep2 represents the step of the second-stage attenuator.

[0085] Compared with the prior art, the present invention has the following beneficial effects:

[0086] 1. The present invention controls the target power output of the power amplifier. Compared with the power amplifier power control that directly controls the attenuation, the processor of the power amplifier itself performs internal loop control, that is, adopts a software loopback approximation method, which reduces the link transmission time and achieves the effect of high-precision power control and the purpose of precise control.

[0087] 2. The present invention adopts a multi-stage digitally controlled attenuator, and through different power differences, different digitally controlled attenuators are called to achieve the purpose of matching applicability and rapid convergence.

[0088] 3. The present invention adopts the method of characteristic value comparison table and corresponds the attenuation value with the frequency and power, so as to achieve the maximum matching and clarification of the initial control accuracy and greatly shorten the control convergence time.

[0089] 4. The detector provided by the present invention can support wide bandwidth power detection in the range of 0 to 40 GHz at most. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0091] Figure 1A schematic diagram of a control system provided by the present invention;

[0092] Figure 2 This is a power control flow chart provided by the present invention. DETAILED DESCRIPTION

[0093] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0094] Ultra-wideband power amplifiers generally use digitally controlled attenuators to directly control power, which has a fast response speed. However, due to hardware characteristics, digitally controlled attenuators have problems of instability and nonlinearity when controlling power, and the control accuracy is related to the attenuation amount, that is, ATT. The greater the attenuation amount, the lower the actual power control accuracy.

[0095] To address the above problem, another solution is to add a software loop approximation control method on this basis. By controlling the attenuation amount multiple times, the required output power can be gradually approached to improve the control accuracy. However, this method requires multiple controls and has a long control response time. The higher the accuracy requirement, the longer the control response time.

[0096] This scheme proposes a control system and method for rapid matching and convergence of ultra-wideband power amplifier power. The core is to quickly adjust the attenuation value of the multi-stage digitally controlled attenuator based on eigenvalue matching operation, so as to solve the difficult problem of achieving both high precision and low latency in ultra-wideband power amplifier power control.

[0097] Specifically, the characteristic values ​​include: frequency, namely F, power, namely P, attenuation, namely ATT, and detection voltage, namely V.

[0098] Take the power amplifier with two-stage digital controlled attenuator as an example. For the convenience of description, build the following Figure 1 The system shown.

[0099] Among them, the control steps of the two-stage digital controlled attenuator, namely ATTStep, are as follows:

[0100] The first-stage digital controlled attenuator step: ATTStep1 = 0.5dB;

[0101] The second-stage digital controlled attenuator step: ATTStep2 = 0.25dB;

[0102] The implementation process is as follows Figure 2 As shown, the specific steps include:

[0103] Step 1: According to the actual measurement data of this system, establish a comparison table of power amplifier characteristic values ​​[F n ,P m ,ATT,V], as shown in Table 3, the units are: Hz, dBm, dB, V; its meaning is a certain frequency point F n , the power amplifier needs to output power P m The attenuation value ATT that the CNC attenuator should be set to and the voltage value V detected by the detector at this time.

[0104] Specifically, the frequency F step when building the table, i.e., FStep, is related to the power amplifier bandwidth range, i.e., B;

[0105]

[0106] Table 3

[0107] In this embodiment, FStep=B / 1000, that is, n=1000, and the step of power P, that is, PStep, is generally consistent with the required power control range, that is, P r and precision, i.e. P a .

[0108] In this embodiment, P a Take ±0.5dB correlation and take P r is 60dB, PStep is 1dB, that is, m=60;

[0109] Specifically, the values ​​of n and m only affect the size of the table, which is related to the accuracy of the first search and the control response delay. They need to be weighed and adjusted based on hardware resources and control accuracy and delay requirements.

[0110] Step 2: According to the external control instruction, obtain the control parameters, that is, the target frequency F t With the target power P t ;

[0111] Step 3: According to the target frequency, F t , find the frequency point with the closest frequency from the comparison table, that is, F i , the search basis is:

[0112] abs(F t -F i )≤FStep / 2

[0113] Among them, abs is the absolute value operation;

[0114] Step 4: According to the target power, P t , find the power point with the closest power value from the comparison table, that is, P i , the search basis is:

[0115] abs(Pt -P i )≤PStep / 2

[0116] Step 5: According to the frequency point F i , power point P i Find the corresponding attenuation ATT in the comparison table i , the first attenuation control is performed on the first-stage digital controlled attenuator, and the attenuation amount is the ATT obtained by searching i value;

[0117] Step 6: Get the current power amplifier voltage value V from the detector now ;

[0118] Step 7: According to the voltage value V obtained from the detector now , reverse search the corresponding power value P from the comparison table now ;

[0119] Step 8: According to the current P now With the target power P t Difference relationship, determine the subsequent execution steps:

[0120] Condition 1: abs(P now -P t )≤P a hour;

[0121] That is, if the current power meets the accuracy requirement, then jump to step 9;

[0122] Condition 2: P a <abs(P now -P t )≤P a ×5 hours;

[0123] Then the secondary digital attenuator is enabled, and the attenuation ATT2 = mod(abs(P now -P t ), ATTStep2)×ATTStep2, jump to step 6; where mod(a, b) is a modulo operation, i.e., taking the integer part after a / b;

[0124] Condition 3: abs(P now -P t )>P a ×5 hours;

[0125] The first-level digital attenuator is enabled, and the attenuation ATT1 = mod(abs(P now -P t ), ATTStep1)×ATTStep1, jump to step 6.

[0126] Step 9: End the control and report the current power value and the attenuation of each level of digital controlled attenuator.

[0127] According to actual test results, the power control accuracy reaches ±0.25dB, and the maximum control response delay is controlled within 1s, which is much higher than the general control accuracy of more than 1dB and the maximum control response delay of more than 30s.

[0128] The present invention also provides a power control system of an ultra-wideband power amplifier, and the power control system of the ultra-wideband power amplifier can be implemented by executing the process steps of the power control method of the ultra-wideband power amplifier, that is, those skilled in the art can understand the power control method of the ultra-wideband power amplifier as a preferred implementation of the power control system of the ultra-wideband power amplifier.

[0129] A power control system of an ultra-wideband power amplifier provided by the present invention comprises: a characteristic value matching control module, a detection control module, and a multi-stage attenuator cycle control module; the multi-stage attenuator cycle control module comprises a primary attenuator cycle control module, a secondary attenuator cycle control module, and a reporting control module;

[0130] The characteristic value matching control module triggers the detection control module to work and compares the current power value difference of the system with the accuracy value;

[0131] If the current power value difference is greater than five times of the accuracy value, the first-stage attenuator cycle control module is triggered to operate, providing a first-stage attenuation amount to make the current power value approach the target output power;

[0132] If the current power value difference is greater than the precision value and less than or equal to five times of the precision value, the secondary attenuator cycle control module is triggered to operate and provide a secondary attenuation amount to make the current power value approach the target output power;

[0133] If the current power value difference is less than or equal to the accuracy value, the reporting control module is triggered to work, and the current power value and attenuation are reported, and the process ends;

[0134] The current power difference is the current power P now With the target power P t The difference.

[0135] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.

[0136] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A power control method for an ultra-wideband power amplifier, characterized in that: include: Eigenvalue matching control process, detection control process, multi-stage attenuator loop control process; The multi-stage attenuator cyclic control process includes a primary attenuator cyclic control process, a secondary attenuator cyclic control process, and a reporting control process; After the characteristic value matching control process is completed, the detection control process is entered to compare the current power value difference of the system with the accuracy value; If the current power value difference is greater than five times the accuracy value, the first-stage attenuator loop control process is entered to provide a first-stage attenuation amount so that the current power value approaches the target output power; If the current power value difference is greater than the precision value and less than or equal to five times of the precision value, the secondary attenuator loop control process is entered to provide a secondary attenuation amount so that the current power value approaches the target output power; If the current power value difference is less than or equal to the accuracy value, the reporting control process is entered to report the current power value and attenuation, and the process ends; The current power difference is the current power and the target power P t The difference.

2. The power control method of an ultra-wideband power amplifier according to claim 1, characterized in that: The characteristic value matching control process includes: Step A1: Establish a power amplifier characteristic value comparison table based on actual measurement data; Step A2: Obtain control parameters, i.e. target frequency F t With the target power P t ; Step A3: According to the target frequency F t , find the closest frequency point F from the power amplifier characteristic value comparison table i ; According to the target power P t , find the closest power point P from the power amplifier characteristic value comparison table i ; Step A4: According to the frequency point F i , power point P i Find the corresponding attenuation ATT in the power amplifier characteristic value comparison table i ; According to the attenuation ATT i , perform attenuation control on the first-stage digital controlled attenuator; Wherein, the power amplifier characteristic value comparison table is [F n ,P m ,ATT,V],Table,F n Indicates frequency, P m Indicates the output power required by the power amplifier, ATT indicates the attenuation, and V indicates the voltage value; Find the frequency point F i The basis is: abs(F t -F i )≤FStep / 2 Where abs means taking the absolute value operation, and FStep means the stepping of frequency F; Find the power point P i The basis is: abs(P t -P i )≤PStep / 2 Wherein, PStep represents the step of power P.

3. The power control method of an ultra-wideband power amplifier according to claim 2, characterized in that: The detection control process includes: Step B1: Get the current power amplifier voltage value V from the detector now ; Step B2: According to the voltage value V now , searching the corresponding current power value from the power amplifier characteristic value comparison table; Step B3: Compare the current power value, i.e., P now With the precision value, that is, P a size; abs(P now -P t )>P a ×5, then enter the first-stage attenuator loop control process; P a <abs(P now -P t )≤P a ×5, then enter the secondary attenuator loop control process; abs(P now -P t )≤P a , then enter the reporting control process; The detector has a detection range of 0 to 40 GHz.

4. The power control method of an ultra-wideband power amplifier according to claim 3, characterized in that: The first-stage attenuator cycle control process includes: Step C1: Enable the first-level digital controlled attenuator to provide the first-level attenuation. now Approaching target power P t ; Step C2: re-execute the step B1; The secondary attenuator cycle control process includes: Step D1: Enable the secondary digitally controlled attenuator to provide a secondary attenuation amount, so that the P now Approaching target power P t ; Step D2: re-execute the step B1; The reporting control process is to report the current power value and the attenuation of each level of digitally controlled attenuators, and then end the process.

5. The power control method of an ultra-wideband power amplifier according to claim 4, characterized in that: In step C1, the mathematical expression of the first-order attenuation is: ATT1=mod(abs(P now -P t ),ATTStep1)×ATTStep1 Among them, ATT1 represents the first-stage attenuation; mod represents the modulo operation, and ATTStep2 represents the step of the first-stage digital controlled attenuator; In step D1, the mathematical expression of the secondary attenuation is: ATT2=mod(abs(P now -P t ),ATTStep2)×ATTStep2 Among them, ATT2 represents the second-stage attenuation; mod represents the modulo operation; and ATTStep2 represents the step of the second-stage attenuator.

6. A power control system for an ultra-wideband power amplifier, characterized in that: include: A characteristic value matching control module, a detection control module, and a multi-stage attenuator cycle control module; the multi-stage attenuator cycle control module includes a primary attenuator cycle control module, a secondary attenuator cycle control module, and a reporting control module; The characteristic value matching control module triggers the detection control module to work and compares the current power value difference of the system with the accuracy value; If the current power value difference is greater than five times of the accuracy value, the first-stage attenuator cycle control module is triggered to operate, providing a first-stage attenuation amount to make the current power value approach the target output power; If the current power value difference is greater than the precision value and less than or equal to five times of the precision value, the secondary attenuator cycle control module is triggered to operate and provide a secondary attenuation amount to make the current power value approach the target output power; If the current power value difference is less than or equal to the accuracy value, the reporting control module is triggered to work, and the current power value and attenuation are reported, and the process ends; The current power difference is the current power and the target power P t The difference.

7. The power control system of the ultra-wideband power amplifier according to claim 6, characterized in that: The characteristic value matching control module includes: Module A1: Establish a comparison table of power amplifier characteristic values ​​based on actual measurement data; Module A2: Get the control parameters, i.e. the target frequency F t With the target power P t ; Module A3: According to the target frequency F t , find the closest frequency point F from the power amplifier characteristic value comparison table i ; According to the target power P t , find the closest power point P from the power amplifier characteristic value comparison table i ; Module A4: According to the frequency point F i , power point P i Find the corresponding attenuation ATT in the power amplifier characteristic value comparison table i ; According to the attenuation ATT i , perform attenuation control on the first-stage digital controlled attenuator; Wherein, the power amplifier characteristic value comparison table is [F n ,P m ,ATT,V], where F n Indicates frequency, P m Indicates the output power required by the power amplifier, ATT indicates the attenuation, and V indicates the voltage value; Find the frequency point F i The basis is: abs(F t -F i )≤FStep / 2 Where abs means taking the absolute value operation, and FStep means the stepping of frequency F; Find the power point P i The basis is: abs(P t -P i )≤PStep / 2 Wherein, PStep represents the step of power P.

8. The power control system of the ultra-wideband power amplifier according to claim 7, characterized in that: The detection control module comprises: Module B1: Get the current power amplifier voltage value V from the detector now ; Module B2: According to the voltage value V now , searching the corresponding current power value from the power amplifier characteristic value comparison table; Module B3: Compare the current power value, i.e. P now With the precision value, that is, P a size; abs(P now -P t )>P a ×5, then enter the first-stage attenuator cycle control module; P a <abs(P now -P t )≤P a ×5, then enter the secondary attenuator loop control module; abs(P now -P t )≤P a , then enter the reporting control module; The detector has a detection range of 0 to 40 GHz.

9. The power control system of the ultra-wideband power amplifier according to claim 8, characterized in that: The primary attenuator cycle control module comprises: Module C1: Enable the first-level digital attenuator to provide the first-level attenuation. now Approaching target power P t ; Module C2: re-execute the module B1; The secondary attenuator cycle control module comprises: Module D1: Enable the secondary digital attenuator to provide secondary attenuation. now Approaching target power P t ; Module D2: re-execute the module B1; The reporting control module reports the current power value and the attenuation of each level of digitally controlled attenuators, and ends.

10. The power control system of the ultra-wideband power amplifier according to claim 9, characterized in that: In the module C1, the mathematical expression of the first-order attenuation is: ATT1=mod(abs(P now -P t ),ATTStep1)×ATTStep1 Among them, ATT1 represents the first-stage attenuation; mod represents the modulo operation, and ATTStep2 represents the step of the first-stage digital controlled attenuator; In the module D1, the mathematical expression of the secondary attenuation is: ATT2=mod(abs(P now -P t ),ATTStep2)×ATTStep2 Among them, ATT2 represents the second-stage attenuation; mod represents the modulo operation; and ATTStep2 represents the step of the second-stage attenuator.

Images