CN115767375B - Power amplifier control circuit and method - Google Patents
Power amplifier control circuit and method Download PDFInfo
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- CN115767375B CN115767375B CN202211452389.4A CN202211452389A CN115767375B CN 115767375 B CN115767375 B CN 115767375B CN 202211452389 A CN202211452389 A CN 202211452389A CN 115767375 B CN115767375 B CN 115767375B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to the technical field of power amplifier control, and discloses a power amplifier control circuit and a power amplifier control method, wherein the circuit comprises a power amplifier control power supply module, a power amplifier detection circuit, an output interface and a control module, and the power amplifier detection circuit comprises an over/under power amplifier detection circuit; the power amplifier control power supply module is connected with the power amplifier module, the power amplifier detection circuit and the control module; the output end of the power amplifier module is connected with the over/under power amplifier detection circuit and the output interface, and the over/under power amplifier detection circuit is used for detecting the output power amplifier information of the power amplifier module to determine the over/under power amplifier information; the control module is connected with the power amplifier detection circuit, the power amplifier detection circuit and the power amplifier module, and is used for determining an over/under power amplifier control instruction according to the over/under power amplifier information, controlling the power amplifier module/the power amplifier control power supply module to adjust the power amplifier according to the over/under power amplifier control instruction and outputting the power amplifier through an output interface. The invention improves the accuracy of power amplification.
Description
Technical Field
The invention relates to the technical field of power amplifier control, in particular to a power amplifier control circuit and a power amplifier control method.
Background
Along with the high-speed development of power amplification related technologies and power amplification chips, the power amplification chips are increasingly used in various fields for control, and meanwhile, the precise control and effective protection of the power amplification chips are also increasingly emphasized.
The traditional power amplification control mode is to directly select a specific power chip according to the requirements to amplify and output the power. The power amplifier control mode has great defects, and the problem that the actual chip use condition and other factors are not considered exists. That is, the power amplification control method may not consider the actual chip use condition and influence of other factors, so that the accuracy of power amplification is not high.
Disclosure of Invention
The invention mainly aims to provide a power amplifier control circuit and a power amplifier control method, which aim at solving the technical problem of low accuracy of power amplification.
In order to achieve the above purpose, the invention provides a power amplifier control circuit, which comprises a power amplifier control power module, a power amplifier detection circuit, an output interface and a control module, wherein the power amplifier detection circuit comprises an over power amplifier detection circuit and an under power amplifier detection circuit;
the power amplifier control power supply module is respectively connected with the power amplifier module, the power amplifier detection circuit and the control module;
the output end of the power amplifier module is respectively connected with the power amplifier detection circuit, the power amplifier lack detection circuit and the output interface, the power amplifier detection circuit is used for detecting the output power amplifier information of the power amplifier module to determine the power amplifier information, and the power amplifier lack detection circuit is used for detecting the output power amplifier information of the power amplifier module to determine the power amplifier lack information;
The control module is respectively connected with the power amplifier detection circuit, the power amplifier lack detection circuit and the power amplifier module, and is used for determining a power amplifier control instruction according to the power amplifier information, controlling the power amplifier module to adjust the power amplifier according to the power amplifier control instruction and outputting the power amplifier through the output interface, and/or determining the power amplifier lack control instruction according to the power amplifier lack information, controlling the power amplifier control power module to adjust the power amplifier according to the power amplifier lack control instruction and outputting the power amplifier through the output interface.
Optionally, the power amplifier control power supply module comprises an input control chip and a power supply control unit, wherein the input end of the input control chip is connected with a power input interface, the control end of the input control chip is connected with the control module, and the output end of the input control chip is connected with the power amplifier module;
the power supply control unit comprises an alternating current-direct current conversion chip, the input end of the alternating current-direct current conversion chip is connected with the power input interface, the control end of the alternating current-direct current conversion chip is connected with the control module, the output end of the alternating current-direct current conversion chip is respectively connected with the power amplifier module, the power amplifier detection circuit and the control module, and the input control chip is used for adjusting output signals of the output end of the input control chip according to the underpower amplifier control instruction.
Optionally, the power amplification module comprises a push amplification unit, a final amplification unit and a combiner output unit, wherein the push amplification unit comprises an equalization circuit, an electric modulation attenuation circuit, a push amplification circuit and four splitters, the output end of the input control chip is connected with the input end of the equalization circuit, the electric modulation attenuation circuit, the push amplification circuit and the four splitters are sequentially connected, and the output end of the four splitters is connected with the final amplification unit;
the final amplification unit comprises a plurality of final power amplifiers, the input end of each final power amplifier is respectively connected with the output end of the four splitters, and the output end of each final power amplifier is respectively connected with the combining output unit;
the combining output unit comprises four combiners, a filter and a bidirectional coupler, wherein the input ends of the four combiners are respectively connected with the output ends of the final-stage power amplifiers, the four combiners, the filter and the bidirectional coupler are sequentially connected, the output ends of the bidirectional coupler are respectively connected with the power amplifier detection circuit, the underpower amplifier detection circuit and the output interface, and the power amplifier module is used for amplifying the power of the output signals to obtain the output power amplifier information.
Optionally, the electric modulation attenuation circuit includes first electric modulation attenuation circuit, second electric modulation attenuation circuit and tertiary pipe circuit, first electric modulation attenuation circuit respectively with equalizer circuit the second electric modulation attenuation circuit the power amplifier detection circuit with tertiary pipe circuit is connected, the second electric modulation attenuation circuit with promote amplifier circuit and be connected, tertiary pipe circuit with the output of alternating current-direct current conversion chip is connected, electric modulation attenuation circuit is used for controlling actual power amplifier according to power amplifier control instruction.
Optionally, the power amplifier detection circuit includes a voltage judgment circuit and a voltage control circuit, the voltage judgment circuit is respectively connected with the output end of the bidirectional coupler, the control module and the output end of the ac-dc conversion chip, the voltage judgment circuit is respectively connected with the output end of the ac-dc conversion chip, the control module and the first electrically-controlled attenuation circuit, and the power amplifier detection circuit is used for determining the power amplifier information according to the output power amplifier information of the output end of the bidirectional coupler.
Optionally, the under power amplifier detection circuit includes an under power amplifier chip, a first end of the under power amplifier chip is connected with an output end of the ac/dc conversion chip, a second end of the under power amplifier chip is connected with an output end of the bidirectional coupler, a third end of the under power amplifier chip is connected with the control module, and the under power amplifier detection circuit is configured to determine the under power amplifier information according to the output power amplifier information of the output end of the bidirectional coupler.
Optionally, the control module includes a single chip microcomputer chip, a reset circuit and a crystal oscillator circuit, a reset port of the single chip microcomputer chip is connected with the reset circuit, a crystal oscillator port of the single chip microcomputer chip is connected with the crystal oscillator circuit, a first control port group of the single chip microcomputer chip is respectively connected with a control end of the input control chip and a control end of the ac-dc conversion chip, a second control port group of the single chip microcomputer chip is respectively connected with the voltage judgment circuit and the voltage control circuit, a third control port of the single chip microcomputer chip is connected with a third end of the under power amplifier chip, and the single chip microcomputer chip is used for determining an over power amplifier control instruction according to the over power amplifier information and/or determining the under power amplifier control instruction according to the under power amplifier information.
In addition, in order to achieve the above object, the present invention further provides a power amplifier control method, where the power amplifier control method is applied to the power amplifier control circuit, and the steps of the power amplifier control method include:
optionally, the step of determining actual power amplifier information according to the output power amplifier information includes:
if the output power amplifier information triggers the conduction information of the power amplifier detection circuit, determining that the actual power amplifier information is the power amplifier information;
And if the output power amplification information triggers the conduction information of the underpower amplification detection circuit, determining that the actual power amplification information is the underpower amplification information.
Optionally, the step of adjusting the actual power amplifier in the output power amplifier information according to the power amplifier control instruction and the target control circuit includes:
if the target control circuit is an electric modulation attenuation circuit in the power amplification module, controlling the electric modulation attenuation circuit to work based on an over power amplification control instruction in the power amplification control instruction, and reducing the actual power amplification in the output power amplification information according to a preset attenuation index through the working electric modulation attenuation circuit, wherein the preset attenuation index is determined by parameters in the electric modulation attenuation circuit;
and if the target control circuit is an input control chip in the power amplifier control power supply module, controlling the input control chip based on an underpower amplifier control instruction in the power amplifier control instruction, and improving the actual power amplifier in the output power amplifier information through the input control chip according to a preset boost instruction, wherein the preset boost instruction is used for controlling the boost output of the output end of the input control chip.
The invention provides a power amplifier control circuit, which comprises a power amplifier control power supply module, a power amplifier detection circuit, an output interface and a control module, wherein the power amplifier detection circuit comprises an over power amplifier detection circuit and an under power amplifier detection circuit; the power amplifier control power supply module is respectively connected with the power amplifier module, the power amplifier detection circuit and the control module; the output end of the power amplifier module is respectively connected with the power amplifier detection circuit, the power amplifier lack detection circuit and the output interface, the power amplifier detection circuit is used for detecting the output power amplifier information of the power amplifier module to determine the power amplifier information, and the power amplifier lack detection circuit is used for detecting the output power amplifier information of the power amplifier module to determine the power amplifier lack information; the control module is respectively connected with the power amplifier detection circuit, the power amplifier lack detection circuit and the power amplifier module, and is used for determining a power amplifier control instruction according to the power amplifier information, controlling the power amplifier module to adjust the power amplifier according to the power amplifier control instruction and outputting the power amplifier through the output interface, and/or determining the power amplifier lack control instruction according to the power amplifier lack information, controlling the power amplifier control power module to adjust the power amplifier according to the power amplifier lack control instruction and outputting the power amplifier through the output interface. The power amplifier detection circuit is used for detecting the actual power amplifier of the circuit, on one hand, the power amplifier detection circuit is used for detecting whether the actual power amplifier of the circuit is over-powered or not, and then the control module is fed back to the control module according to the power amplifier detection circuit, and the control module sends the power amplifier control instruction to the power amplifier module to carry out internal adjustment of the power amplifier; on the other hand, whether the actual power amplifier is under-powered or not is detected by the under-power amplifier detection circuit, and then the control module is fed back to the control module according to the under-power amplifier detection circuit, and the control module sends an under-power amplifier control instruction to the power amplifier control power supply module to carry out external input adjustment on the power amplifier, and finally the power amplifier is output after adjustment. Therefore, the phenomenon that the power amplification or the power amplification output is carried out due to the fact that the use condition of an actual chip and the influence of other factors are not considered in the prior art is avoided, the actual power amplification of the circuit is detected through the power amplification detection circuit, and further the accuracy of power amplification of the power amplification circuit can be guaranteed through control and adjustment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a power amplifier control circuit according to the present invention;
fig. 2 is a schematic diagram of internal connection of a power amplifier control power module in the power amplifier control circuit of the invention;
FIG. 3 is a schematic diagram of the internal connection of the power amplifier module in the power amplifier control circuit of the present invention;
FIG. 4 is a schematic diagram illustrating connection of an embodiment of an electrically tunable attenuation circuit in a power amplifier control circuit according to the present invention;
FIG. 5 is a schematic diagram illustrating connection of an embodiment of an over power amplifier detection circuit in a power amplifier control circuit according to the present invention;
FIG. 6 is a schematic diagram illustrating connection of an embodiment of an underpower amplifier detection circuit in a power amplifier control circuit according to the present invention;
FIG. 7 is a schematic diagram illustrating internal connection of a control module in the power amplifier control circuit according to an embodiment of the present invention;
fig. 8 is a flowchart of a first embodiment of a power amplifier control method according to the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
|
| 10 | Power amplifier control |
20 | |
|
| 30 | Power |
40 | |
|
| 50 | |
31 | Power |
|
| 32 | Detection circuit for |
00 | Power input interface | |
| U1 | |
11 | Power supply control unit | |
| U2 | AC/ |
21 | Push amplifying |
|
| 2A | Equalization circuit | 2B | Electrically tunable attenuation circuit | |
| 2C | Push amplifying circuit | 2D | Four- |
|
| 22 | Final |
2a | Final |
|
| 2b | Final |
2c | Final |
|
| 2d | Final |
23 | |
|
| 231 | Four-way combiner | 232 | |
|
| 233 | Bidirectional coupler | L1 | Inductance | |
| R1-R24 | First resistor-twenty-fourth resistor | C1-C12 | First capacitor-twelfth capacitor | |
| Q1 | PNP triode | D1-D4 | First diode-fourth diode | |
| 2B1 | First electrically tunable attenuation circuit | 2B2 | Second electrically tunable attenuation circuit | |
| 2B3 | Three-stage tube circuit | U3 | Voltage judging chip | |
| U4 | Voltage control chip | U5 | Under power amplifier chip | |
| | Singlechip chip | 41 | |
|
| 42 | |
311 | |
|
| 312 | Voltage control circuit | Z11 | Crystal oscillator | |
| C-11 | First crystal oscillator capacitor | C-12 | Second crystal oscillator capacitor | |
| R-11 | First reset resistor | K11 | Reset control switch | |
| JC11 | First polarity capacitor |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a power amplifier control circuit.
In an embodiment of the present invention, as shown in fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a power amplifier control circuit, where the power amplifier control circuit includes a power amplifier control power module 10, a power amplifier module 20, a power amplifier detection circuit 30, an output interface 50 and a control module 40, and the power amplifier detection circuit 30 includes an over power amplifier detection circuit 31 and an under power amplifier detection circuit 32;
the power amplifier control power supply module 10 is respectively connected with the power amplifier module 20, the power amplifier detection circuit 30 and the control module 40;
the output end of the power amplifier module 20 is respectively connected with the power amplifier detection circuit 31, the power amplifier shortage detection circuit 32 and the output interface 50, the power amplifier detection circuit 31 is used for detecting the output power amplifier information of the power amplifier module 20 to determine the power amplifier shortage information, and the power amplifier shortage detection circuit 32 is used for detecting the output power amplifier information of the power amplifier module 20 to determine the power amplifier shortage information;
the control module 40 is respectively connected with the power amplifier detection circuit 31, the power amplifier detection circuit 32 and the power amplifier module 20, and the control module 40 is configured to determine a power amplifier control instruction according to the power amplifier information, control the power amplifier module 20 to adjust the power amplifier according to the power amplifier control instruction, and output the power amplifier through the output interface, and/or determine a power amplifier control instruction according to the power amplifier information, control the power amplifier control power module 10 to adjust the power amplifier according to the power amplifier control instruction, and output the power amplifier through the output interface.
In this embodiment, the power amplifier control circuit needs to be corrected and protected in the power amplifier circuit with long service time or poor service environment. The power amplifier detection circuit 31 and the power amplifier detection circuit 32 in the power amplifier detection circuit 30 function to detect the power signal to be output by the output interface 50. The principle of main detection is: when the power signal to be output exceeds the self-defined maximum power signal, the power signal is led to pass through the power amplifier detection circuit 31, so that the power amplifier detection circuit 31 triggers the control module 40 to work, and finally the control module 40 controls the corresponding power signal to be output to reduce the power signal to be output; conversely, when the power signal to be output exceeds the self-defined theoretical power signal, the under-power amplification detection circuit 32 is turned on, so that the under-power amplification detection circuit 32 triggers the control module 40 to work, and finally the control module 40 controls the corresponding power signal to be output to rise. The maximum power signal refers to the maximum power of the whole circuit or the corresponding supply device, and the theoretical power signal refers to the power required by the supply device. The power amplification information is determined by detecting the output power amplification information of the power amplification module 20 through the power amplification detection circuit 31, or the power amplification information is determined by detecting the output power amplification information of the power amplification module 20 through the power amplification detection circuit 32, that is, the output power amplification information of the power amplification module 20 can be a current or voltage output by the power amplification detection circuit 31 or the power amplification detection circuit 32 or two circuits which are not conducted (the output power of the circuits is normal), the output power amplification information can be a trigger level or a trigger signal which is conducted by the power amplification detection circuit 31 to the control module 40, and the power amplification information can be a trigger level or a trigger signal which is conducted by the power amplification detection circuit 32 to the control module 40. When the control module 40 receives the trigger level or trigger signal from the under power amplifier detection circuit 32 or the over power amplifier detection circuit 31, it knows that the operation needs to be performed, and selects the corresponding control instruction according to the source trigger signal, and sends the corresponding control instruction to the target circuit for control. And determining an over power amplifier control instruction according to the over power amplifier information, controlling the power amplifier module 20 to adjust the power amplifier according to the over power amplifier control instruction, outputting the power amplifier through an output interface, and/or determining an under power amplifier control instruction according to the under power amplifier information, controlling the power amplifier control power supply module 10 to adjust the power amplifier according to the under power amplifier control instruction, and outputting the power amplifier through the output interface. The over power amplifier control instruction refers to an instruction for adjusting the power amplifier module 20 to perform internal power amplification reduction, and the under power amplifier control instruction refers to an instruction for adjusting the power amplifier control power module 10 to perform external power amplification increase. The over/under power amplification detection is carried out on the whole circuit through the over power amplification detection circuit 31 and the under power amplification detection circuit 32, and then the control module 40 controls the power amplification module 20 and the power amplification control power supply module 10 to realize the adjustment of the power amplification, so that the selection of the existing theoretical power amplification only through the circuit can be avoided, the difference between the normal actual power amplification output and the theoretical output, which are influenced by the actual temperature, the time and the environment, is ignored, and the power amplification accuracy of the power amplification circuit is further ensured.
Further, in still another embodiment of the power amplifier control circuit of the present application, referring to fig. 2, a schematic diagram of internal connection of a power amplifier control power supply module in the power amplifier control circuit of fig. 2, the power amplifier control power supply module 10 includes an input control chip U1 and a power supply control unit 11, an input end of the input control chip U1 is connected to a power input interface 00, a control end of the input control chip U1 is connected to the control module 40, and an output end of the input control chip U1 is connected to the power amplifier module 20; the power supply control unit 11 includes an ac/dc conversion chip U2, an input end of the ac/dc conversion chip U2 is connected to the power input interface 00, a control end of the ac/dc conversion chip U2 is connected to the control module 40, an output end of the ac/dc conversion chip U2 is respectively connected to the power amplifier module 20, the power amplifier detection circuit 30 and the control module 40, and the input control chip U1 is configured to adjust an output signal of the output end of the input control chip U1 according to the under power amplifier control instruction.
In the present embodiment, the power amplifier control power module 10 includes an input control chip U1 and a power control unit 11. The function of the input control chip U1 is that the control input is the same as the theoretical input, and there is actually an input circuit in the control module 40, which may be a simple keyboard, only the required signal voltage needs to be input, and the signal voltage is used as the theoretical power signal, so that the comparison control is convenient to follow. For example, when the voltage of the actual theoretical power signal is AV, a control command corresponding to the AV is sent to the control end of the ac/dc conversion chip U2, and the input end of the ac/dc conversion chip U2 is connected to the power input interface 00, and the control end of the ac/dc conversion chip U2 is used to control the output end of the ac/dc conversion chip U2 to output the AV, and is connected to the underpower amplifier detection circuit 32 in the power amplifier detection circuit 30, so as to compare the actual output voltage of the power amplifier circuit with the AV, and detect whether the actual output requirement is met, or other definitions may be made, where the AV voltage floats downwards. When the voltage is smaller than the voltage AV of the actual theoretical power signal, the control module 40 re-inputs a larger voltage to further improve the actual output voltage of the power amplifier circuit, and the voltage is compared with the voltage AV until the voltage AV meets the requirement. The ac/dc conversion chip U2 has a function of providing voltages required by related devices in the power amplifier module 20, the power amplifier detection circuit 30 and the control module 40, and can convert an ac signal into a dc signal through the ac/dc conversion chip U2, and finally divide or pressurize the voltage according to the requirement (the same as controlling the output AV of the ac/dc conversion chip U2 through the control end of the ac/dc conversion chip U2), wherein the simple voltage dividing circuit can directly divide the voltage by using a resistor, or can divide the voltage by using a voltage divider. The input control chip U1 is configured to adjust an output signal of the output end of the input control chip U1 according to the under-power amplification control instruction, that is, the input control chip U1 initially controls and adjusts the output signal of the output end of the input control chip U1 according to a voltage value corresponding to the actual theoretical power signal, and when the under-power amplification is fed back, the output signal of the output end of the input control chip U1 is adjusted according to the under-power amplification control instruction, and a specific adjustment process is described in the following method. The power amplifier control power module 10 can regulate input voltage so as to achieve the purpose of improving the power amplifier.
Further, in still another embodiment of the power amplifier control circuit of the present application, referring to fig. 3, a schematic diagram of internal connection of a power amplifier module in the power amplifier control circuit of fig. 3, where the power amplifier module 20 includes a push amplifying unit 21, a final amplifying unit 22, and a combining output unit 23, the push amplifying unit 21 includes an equalizing circuit 2A, an electrically-controlled attenuation circuit 2B, a push amplifying circuit 2C, and a four-splitter 2D, an output end of the input control chip U1 is connected to an input end of the equalizing circuit 2A, the electrically-controlled attenuation circuit 2B, the push amplifying circuit 2C, and the four-splitter 2D are sequentially connected, and an output end of the four-splitter 2D is connected to the final amplifying unit 22; the final amplification unit 22 comprises a plurality of final power amplifiers, the input end of each final power amplifier is respectively connected with the output end of the four splitters, and the output end of each final power amplifier is respectively connected with the combining output unit; the combining output unit 23 includes four combiners 231, a filter 232 and a bi-directional coupler 233, input ends of the four combiners 231 are respectively connected with output ends of the final power amplifiers, the four combiners 231, the filter 232 and the bi-directional coupler 233 are sequentially connected, output ends of the bi-directional coupler 233 are respectively connected with the power amplifier detection circuit 31, the under power amplifier detection circuit 32 and the output interface 50, and the power amplifier module 20 is used for amplifying power of the output signals to obtain the output power amplifier information.
In the present embodiment, referring to fig. 3 (a), it can be seen that the connection diagram of the power amplifier module 20 is actually shown. The final stage amplifying unit 22 (including the final stage power amplifier 12 a, the final stage power amplifier 2b, the final stage power amplifier 32 c, and the final stage power amplifier 4D) is in one-to-one correspondence with the four splitters 2D and the four combiners 231, and performs the splitting power amplification and then the combining, so more final stage power amplifiers (the final stage power amplifier 1, the final stage power amplifier 2 … …) may be contained here, and only the corresponding four splitters 2D and four combiners 231 are needed. Referring to fig. 3 (B), the push amplifying circuit 2C mainly comprises an equalizing circuit 2A, an electrically tunable attenuation circuit 2B, the push amplifying circuit 2C and four splitters 2d,4 parts, the actual RFin is a radio frequency input, the RFout is a radio frequency output, the TTL is temperature control, and the driving amplifiers 1, 2 and 3 are turned off by the TTL when the temperature is over, so as to protect the circuits. The push amplifying circuit 2C is at least composed of three stages of amplifying cascade, the gain of each stage of amplifier can change along with the change of temperature, and a temperature compensation attenuator and a 2-stage pi-type attenuator are arranged to be used for compensating the gain change at high and low temperatures. The gain change of the driving amplifier 1 and the driving amplifier 3 is about δt1=0.8 dB/125 ℃ =0.0064 dB/°c, the gain change of the driving amplifier 2 is δt2=1.1 dB/125 ℃ =0.0088 dB/°c, the temperature change of the final power amplifier a\b\c\d is about δt3=1.4 dB/125 ℃ =0.0112 dB/°c, the total temperature change of four stages is 0.0328dB/°c, the gain change is about 3.116dB according to the temperature change range 95 ℃, if a 3dB temperature compensation attenuator is used, the temperature compensation attenuator needs to provide a compensation amount of 0.0109dB/°c, and a TCA0603N10 temperature attenuator can be selected. The driver amplifier 1 is mainly used to provide a certain gain, and to prevent excessive degradation of noise level, the SIA3024SP3 low noise amplifier of the shi core semiconductor is selected as the driver amplifier, and the driver amplifier 2 is mainly used to provide a driving capability of 29dBm for the final stage amplifier, and to provide a gain of 16 dB. The driving amplifier 3 mainly comprises a 3dB fixed attenuator and MW6S004, and in order to improve cascade matching of the driving amplifier 3 and the driving amplifier 2, the driving amplifier 3 needs to be matched with the MW6S004 To insert a fixed 3dB fixed attenuator between the two, MW6S004 can provide gain > 19dB. The components can realize stable power amplification of input signals and ensure the stable relation of power amplification signals. Its corresponding gain table can be referred to in table 1 below:
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table 1 push-amplifying unit internal device level gain table
Further, in still another embodiment of the power amplifier control circuit of the present application, referring to fig. 4, an embodiment of an electrically-controlled attenuation circuit in the power amplifier control circuit of fig. 4 is connected to a schematic diagram, the electrically-controlled attenuation circuit 2B includes a first electrically-controlled attenuation circuit 2B1, a second electrically-controlled attenuation circuit 2B2, and a third-stage circuit 2B3, the first electrically-controlled attenuation circuit 2B1 is connected to the equalizing circuit 2A, the second electrically-controlled attenuation circuit 2B2, the power amplifier detection circuit 31, and the third-stage circuit 2B3, the second electrically-controlled attenuation circuit 2B2 is connected to the push amplifying circuit 2C, and the third-stage circuit 2B3 is connected to an output end of the ac/dc conversion chip U2, and the electrically-controlled attenuation circuit 2B is configured to control an actual power amplifier according to an excessive power amplifier control instruction.
In this embodiment, the first electrically tunable attenuation circuit 2B1 includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first diode D1 and a third diode D3, a first end of the second capacitor C2 is connected to the equalizing circuit 2A, a second end of the second capacitor C2 is sequentially connected to the first end of the fourth resistor R4, a negative electrode of the third diode D3 and a negative electrode of the second diode D2, an anode of the first diode D1 is sequentially connected to the third transistor circuit 2B3 and the second electrically tunable attenuation circuit 2B2, an anode of the third diode D3 is sequentially connected to a first end of the fourth capacitor C4 and a first end of the fifth resistor R5, a second end of the fifth resistor R5 is respectively connected to a first end of the sixth resistor R6 and a second end of the third capacitor C3, a second end of the sixth resistor R6 is sequentially connected to the second electrically tunable attenuation circuit 2B2, and a first end of the fourth resistor C4, a third end of the fourth resistor C4 and a first end of the third capacitor C3 are terminated to the ground; the second electrically-controlled attenuation circuit 2B2 includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a second diode D2, and a fourth diode D4, where a first end of the sixth capacitor C6 is connected to the push amplifying circuit 2C, a second end of the sixth capacitor C6 is sequentially connected to a first end of the ninth resistor R9, a negative electrode of the fourth diode D4, and a negative electrode of the second diode D2, an anode of the second diode D2 is sequentially connected to the third transistor circuit 2B3 and the first triode anode, an anode of the fourth diode D4 is sequentially connected to a first end of the fifth capacitor C5 and a first end of the eighth resistor R8, a second end of the eighth resistor R8 is respectively connected to a first end of the seventh resistor R7 and a second end of the seventh capacitor C7, and a second end of the seventh capacitor C5 and a first end of the seventh capacitor C7 are terminated to ground; the transistor circuit 2B3 comprises a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, an inductor L1 and an NPN triode Q1, wherein the first end of the first resistor R1 and the first end of the first capacitor C1 are grounded, the second end of the first resistor R1 and the second end of the first capacitor C1 are respectively connected with the base electrode of the NPN triode Q1 and the first end of the second resistor R2 after being connected, the second end of the second resistor R2 is sequentially connected with the collector electrode of the NPN triode Q1 and the voltage of 8V, the emitter electrode of the NPN triode Q1 is connected with the first end of the inductor L1, the second end of the inductor L1 is connected with the first end of the third resistor R3, and the second end of the third resistor R3 is connected with the positive electrode of the second diode D2; the electrically tunable attenuation circuit 2B further includes a tenth resistor R10 and an eighth capacitor C8, where a first end of the tenth resistor R10 is sequentially connected to a first end of the eighth capacitor C8 and a second end of the seventh resistor R7, and a second end of the tenth resistor R10 is connected to the power amplifier detection circuit 31, and a second end of the eighth capacitor C8 is grounded. When the power is lower than the saturated power by 2-3 dB, in order to avoid the damage of the load due to the over-power and reduce the damage of the power supply unit in the over-current state, certain limitation on the power is needed, for example, when the input power exceeds 1dBm, the electrically-controlled attenuation network enters the working state, the attenuation value is set to be 6dB (corresponding to different electrically-controlled attenuation circuits), and the input signal is reduced to ensure that the power amplifier works within a reliable range. The electrically tunable attenuation circuit is designed by adopting a traditional PIN diode, the PIN diode attenuator circuit can provide constant input and output impedance and can provide about 20dB of attenuation, and the actual attenuation can be selected according to the user by oneself, and the main working principle is as follows: when a specific voltage is received at the second end KZ of the tenth resistor R10, the whole electric modulation attenuation circuit 2B is enabled to work, and the whole electric modulation attenuation circuit 2B is enabled to attenuate the whole electric modulation attenuation circuit; when the voltage is not received at the second end KZ of the tenth resistor R10 or is not a specific voltage, the whole electric tuning attenuation circuit 2B does not work, the whole electric tuning attenuation circuit 2B only plays a role of a path, and when the meaning of controlling the actual power amplifier according to the power amplifier control instruction is the power amplifier, the power amplifier detection circuit 31 gives a specific voltage to the second end of the tenth resistor R10, so that the electric tuning attenuation circuit 2B works to realize the attenuation of the power amplifier, thereby protecting the power amplifier, reducing the loss of components and improving the service life of internal components.
Further, in still another embodiment of the power amplifier control circuit of the present application, referring to fig. 5, an embodiment of an over power amplifier detection circuit in the power amplifier control circuit of fig. 5 is connected to a schematic diagram, the over power amplifier detection circuit 31 includes a voltage determination circuit 311 and a voltage control circuit 312, the voltage determination circuit 311 is respectively connected to an output end of the bidirectional coupler 233, the control module 40 and an output end of the ac/dc conversion chip U2, the voltage determination circuit 311 is respectively connected to an output end of the ac/dc conversion chip U2, the control module 40 and the first electrically adjustable attenuation circuit 2B1, and the over power amplifier detection circuit 31 is configured to determine the over power amplifier information according to the output power amplifier information of the output end of the bidirectional coupler 233.
In this embodiment, referring to fig. 5 (a), the voltage determination circuit 311 includes an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a ninth capacitor C9, a tenth capacitor C10, and a voltage determination chip U3, the first end of the eleventh resistor R11 is connected to the output end of the bidirectional coupler 233, the second end of the eleventh resistor R11 is connected to the positive input end of the voltage determination chip U3, the first end of the ninth capacitor C9 is connected to the +5v voltage and the first end of the twelfth resistor R12, the second end of the twelfth resistor R12 is connected to the first end of the thirteenth resistor R13 and the first end of the fourteenth resistor R14, the second end of the thirteenth resistor R13 is connected to the negative input end of the voltage determination chip U3, the output end of the voltage determination chip U3 is connected to the first end of the fifteenth resistor R15, the second end of the fifteenth resistor R15 is connected to the first end of the tenth capacitor C10 and the control module 40 (P21 port) respectively, and the second end of the thirteenth resistor R10 and the ninth resistor R14 are connected to the fourth end of the thirteenth resistor R14; referring to fig. 5 (B), the voltage control circuit 312 includes a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, an eleventh capacitor C11, and a voltage control chip U4, wherein a first end of the sixteenth resistor R16 is connected to the control module 40 (P25 port), a second end of the sixteenth resistor R16 is connected to a positive input end of the voltage control chip U4, a second end of the seventeenth resistor R17 is connected to a negative input end of the voltage control chip U4 and a first end of an eighteenth resistor R18, a second end of the eighteenth resistor R18 is connected to an output end of the voltage control chip U4 and a first end of a nineteenth resistor R19, a second end of the nineteenth resistor R19 is connected to the first electrical damping circuit 2B1, a positive electrode of the voltage control chip U4 is connected to a +5v voltage and a first end of the eleventh capacitor C11, and a negative electrode of the voltage control chip U4, a second end of the eleventh capacitor C11, and a first end of the seventeenth resistor R17 are grounded. When the monitored voltage of the output power exceeds a certain value, the voltage judging circuit 311 outputs a high level and sends the high level to the MCU (control module 40), the MCU outputs a specific level or voltage by setting an internal control drain, and the voltage control circuit 312 outputs a fixed voltage to the electrically controlled attenuation circuit 2B to enable the electrically controlled attenuation circuit 2B to work and realize attenuation of about 6 dB. The comparison voltage +5v in the voltage judging circuit 311 may be divided by a resistor to obtain a specific voltage, and different resistance values may be directly set, so that the electric adjustment attenuation circuit 2B may be controlled to work and realize attenuation by outputting the specific voltage through the voltage judging circuit 311 and the voltage control circuit 312.
Further, in still another embodiment of the present application, referring to fig. 6, an embodiment of an under power amplifier detection circuit in the power amplifier control circuit of fig. 6 is a connection schematic diagram, the under power amplifier detection circuit 32 includes an under power amplifier chip U5, a first end of the under power amplifier chip U5 is connected to an output end of the ac/dc conversion chip U2, a second end of the under power amplifier chip U5 is connected to an output end of the bi-directional coupler 233, a third end of the under power amplifier chip U5 is connected to the control module 40, and the under power amplifier detection circuit 32 is configured to determine the under power amplifier information according to the output power amplifier information of the output end of the bi-directional coupler 233.
In this embodiment, the under-power amplifier detection circuit 32 includes a twenty-first resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twelfth capacitor C12, a thirteenth capacitor C13, and an under-power amplifier chip U5, the first end of the twenty-first resistor R20 is connected to the output end of the bi-directional coupler 233, the second end of the twenty-first resistor R20 is connected to the positive input end of the under-power amplifier chip U5, the first end of the twelfth capacitor C12 is connected to the first ends of the ac-dc conversion chip U2 and the twenty-first resistor R21, the second end of the twenty-first resistor R21 is connected to the first end of the twenty-second resistor R22 and the first end of the twenty-third resistor R23, the second end of the twenty-second resistor R22 is connected to the negative input end of the under-fourth resistor U5, the second end of the power amplifier chip U5 is connected to the first end of the twenty-fourth resistor R24, and the second end of the twenty-fourth resistor R24 is connected to the second end of the thirteenth capacitor C13 and the thirteenth capacitor C40 (the thirteenth end of the thirteenth capacitor C13 and the thirteenth end of the thirteenth capacitor C23) respectively). The working principle of the under-power amplifier detection circuit 32 is the same as that of the voltage judgment circuit 311, and the voltage at two ends of the under-power amplifier chip U5 is directly compared to obtain an output level, except that the negative input end (comparison end) of the under-power amplifier chip U5 is connected with an AC/DC conversion chip U2. According to the above description, the underpower amplifier detection circuit 32 connected to the ac/dc conversion chip U2 actually outputs the voltage of the actual theoretical power signal. For example, when the voltage CV of the positive input end of the under-power amplification chip U5 is greater than or equal to the voltage AV of the actual theoretical power signal of the negative input end of the under-power amplification chip U5, the output meets the requirement, the control is not performed, the low level can be output, and the control module 40 is connected to the low level and does not react; when the voltage CV of the positive input end of the underpower amplifier chip U5 is smaller than the voltage AV of the actual theoretical power signal of the negative input end of the underpower amplifier chip U5, the output is controlled to be in a high level, and the control module 40 is connected to the high level for reaction control, so that the undervoltage control is realized, and the operation accuracy of corresponding equipment of the power amplifier is further ensured.
Further, in still another embodiment of the power amplifier control circuit of the present application, referring to fig. 7, a schematic diagram of internal connection of an embodiment of a control module in the power amplifier control circuit of fig. 7, where the control module 40 includes a single-chip microcomputer chip U6, a reset circuit 42 and a crystal oscillator circuit 41, a reset port of the single-chip microcomputer chip U6 is connected to the reset circuit 42, a crystal oscillator port of the single-chip microcomputer chip U6 is connected to the crystal oscillator circuit 41, a first control port group of the single-chip microcomputer chip U6 is respectively connected to a control end of the input control chip U1 and a control end of the ac/dc conversion chip U2, a second control port group of the single-chip microcomputer chip U6 is respectively connected to the voltage judgment circuit 311 and the voltage control circuit 312, a third control port of the single-chip microcomputer chip U6 is connected to a third end of the under power amplifier chip U5, and the single-chip microcomputer chip U6 is used for determining an over power amplifier control instruction according to the over power amplifier information, or determining an under power amplifier control instruction according to the under power amplifier information.
In this embodiment, the reset circuit 42 includes a first reset resistor R-11, a reset control switch K11 and a first polarity capacitor JC11, the 9 th pin of the single chip microcomputer chip U6 is connected to the first end of the first reset resistor R-11, the first end of the reset control switch K11 and the negative electrode of the first polarity capacitor JC11, the positive electrode of the first polarity capacitor JC11 is connected to the second end of the reset control switch K11 and then connected to the system power supply, and the second end of the first reset resistor R-11 is connected to the system power supply ground. The crystal oscillator circuit 41 comprises a first crystal oscillator capacitor C-11, a second crystal oscillator capacitor C-12 and a crystal oscillator Z11, a 19 th pin of the single chip microcomputer chip U6 is sequentially connected with a first end of the crystal oscillator Z11 and a first end of the first crystal oscillator capacitor C-11, an 18 th pin of the single chip microcomputer chip U6 is sequentially connected with a second end of the crystal oscillator Z11 and a first end of the second crystal oscillator capacitor C-12, a second end of the second crystal oscillator capacitor C-12 and a second end of the first crystal oscillator capacitor C-11 are connected with a system power supply ground after being connected, and a 31 st pin of the single chip microcomputer chip U6 is connected with the system power supply. The 39 th, 38 th, 37 th, 36 th, 35 th, 34 th, 33 rd, 32 nd and 28 th pins of the single chip microcomputer chip U6 are used as a first control port group to be respectively connected with the control end of the input control chip U1 and the control end of the AC/DC conversion chip U2, the 26 th and 22 nd pins of the single chip microcomputer chip U6 are used as a second control port group to be respectively connected with the voltage judging circuit 311 and the voltage control circuit 312, and the 8 th pin of the single chip microcomputer chip U6 is used as a third control port to be connected with the third end of the under power amplification chip U5. The singlechip chip U6 mainly realizes the following functions: the ac/dc conversion chip U2 is controlled by a first control port group such as the 39 th, 38 th, 37 th, 36 th, 35 th, 34 th, 33 th, 32 nd, 28 th, etc., so that the required dc voltage of each device in the circuit and the actual input signal required for controlling the input signal to realize the output by the input control chip U1 are outputted, the input signal is the signal actually inputted initially, and the actual input signal is the signal inputted after the change processing (step-up, step-down, etc.) by the input control chip U1. The feedback control voltage control circuit 312 of the voltage judging circuit 311 outputs a specific voltage (which may be 5V) to control the electric tuning attenuation circuit 2B to work so as to perform attenuation protection circuit, and the under power amplifier chip U5 controls the input control chip U1 to realize that the actually output power amplifier information can meet the theoretical requirement, so that the output accuracy of the power amplifier circuit is ensured.
Further, referring to fig. 8, a flowchart of a first embodiment of the power amplifier control method according to the present invention is provided based on an embodiment of the power amplifier control circuit, where the steps of the power amplifier control method include:
step S10, obtaining output power amplification information of the power amplification module, and determining actual power amplification information according to the output power amplification information;
in this embodiment, before the output power amplifier information of the power amplifier module is obtained, a control instruction is determined according to the input demand information received by the singlechip chip U6 in the control module, and the input control chip U1 and the ac/dc conversion chip U2 in the power amplifier control power module are controlled to start working according to the control instruction. The main control mode is to control the ac/dc conversion chip U2 to generate corresponding voltage according to the voltage control command in the control command, and output the corresponding voltage to devices in the circuit according to the existing circuit connection, meanwhile, control the input control chip U1 to generate corresponding input power amplifier signals according to the output control command in the control command, the input demand information refers to the requirement of a user for using the power amplifier circuit, for example, the input signal with the maximum voltage of 5V, the control command refers to the command corresponding to the input demand information, for example, the input signal with the maximum voltage of 5V, the control command refers to the command on how the voltage with the input voltage of 10V is processed and how the direct current required by each device in the circuit is generated, the voltage control command refers to the command for generating the corresponding required direct current, and the output control command refers to the command corresponding to the input signal with the maximum voltage of 5V. After the input signal is input, the signal is amplified in the power amplification circuit and then output, and the output power amplification information of the power amplification module is obtained, so that the actual power amplification information of the output power amplification information is determined. The output power amplifier information is a signal outputted after gain amplification by the power amplifier circuit, and the actual power amplifier information is power amplifier information after actual detection (detection by the power amplifier detection circuit 31 or the power amplifier detection circuit 32). The step of determining the actual power amplifier information according to the output power amplifier information comprises the following steps:
Step C11, if the output power amplifier information triggers the conduction information of the power amplifier detection circuit, determining that the actual power amplifier information is the power amplifier information;
and step C112, if the output power amplifier information triggers the conduction information of the underpower amplifier detection circuit, determining that the actual power amplifier information is the underpower amplifier information.
In this embodiment, because the over power amplifier detection circuit 31 or the under power amplifier detection circuit 32 is a triggering relationship of outputting power amplifier information, the actual power amplifier information refers to information which circuit can be triggered to operate by the output power amplifier information, and when the output power amplifier information is the on information for triggering the over power amplifier detection circuit, the actual power amplifier information is determined to be the over power amplifier information; otherwise, the output power amplification information is the conduction information triggering the under power amplification detection circuit, and the actual power amplification information is determined to be the under power amplification information; if both are triggered, the output power amplifier information is directly output through an output interface (the power amplifier output is moderate and meets the requirements). The on information is information for guiding the corresponding circuit to be turned on, the over power amplification information is trigger information exceeding the maximum power amplification, the under power amplification information is trigger information lower than the minimum power amplification, and the power amplification can be controlled through the over power amplification information and the under power amplification information so as to meet the requirements of a user on using or protecting the circuit.
Step S20, determining a power amplifier control instruction according to the actual power amplifier information, and determining a target control circuit corresponding to the actual power amplifier information;
in this embodiment, after the actual power amplifier information is determined, a power amplifier control instruction corresponding to the actual power amplifier information is determined, and at the same time, a corresponding target control circuit is determined in the power amplifier control instruction, where the target control circuit refers to a control circuit corresponding to the power amplifier control instruction, and the power amplifier control instruction refers to an instruction for attenuating the power amplifier or increasing the power amplifier. When the actual power amplifier information is the over power amplifier information, the power amplifier control instruction is an instruction for attenuating the power amplifier, and when the actual power amplifier information is the under power amplifier information, the power amplifier control instruction is an instruction for increasing the power amplifier. The control instruction is determined in such a way that after the level or other trigger information sent by the power amplifier detection circuit after being conducted is received, the power amplifier control instruction is generated; after receiving the level or other triggering information sent by the power-failure detection circuit after being conducted, the power-failure detection circuit generates a power-failure control instruction, and the power-failure control instruction realize compensation power amplification or attenuation power amplification. And the power amplifier can be accurately output through the instruction, so that the circuit is ensured not to be damaged while the user requirement is met, and the service life of the power amplifier circuit is prolonged.
And step S30, adjusting the actual power amplifier in the output power amplifier information according to the power amplifier control instruction and the target control circuit so as to realize power amplifier control.
In this embodiment, after the power amplifier control command is determined, the target control circuit is controlled according to the power amplifier control command, and the power amplifier control (compensation or attenuation) is realized by adjusting the target control circuit. The step of adjusting the actual power amplifier in the output power amplifier information according to the power amplifier control instruction and the target control circuit comprises the following steps:
step C31, if the target control circuit is an electric modulation attenuation circuit in the power amplification module, controlling the electric modulation attenuation circuit to work based on an excessive power amplification control instruction in the power amplification control instruction, and reducing the actual power amplification in the output power amplification information according to a preset attenuation index through the working electric modulation attenuation circuit, wherein the preset attenuation index is determined by parameters in the electric modulation attenuation circuit;
in this embodiment, when the target control circuit is an electrically-controlled attenuation circuit in the power amplifier module, the power amplifier control command in the power amplifier control command controls the electrically-controlled attenuation circuit to work, so as to finally realize that the electrically-controlled attenuation circuit reduces the actual power amplifier in the output power amplifier information according to a preset attenuation index. The power amplifier control instruction refers to an instruction for controlling the power amplifier of the power amplifier circuit, namely, after receiving the trigger information of the power amplifier detection circuit, the voltage control circuit in the specific voltage control power amplifier detection circuit generates specific voltage, and the specific voltage control power amplifier attenuation circuit starts working, and finally, the actual power amplifier in the output power amplifier information is reduced according to a preset attenuation index, so that the power amplifier attenuation is realized. The preset attenuation index is determined by parameters in the electrically-controlled attenuation circuit, that is to say, referring to the embodiment circuit of fig. 4, the circuit can attenuate the attenuation amount of about 20dB at maximum, the actually required attenuation amount can be selected according to the user, the protection of the whole power amplification circuit can be ensured, and further, the control accuracy of the power amplification circuit is improved on the one hand.
And step C32, if the target control circuit is an input control chip in the power amplifier control power supply module, controlling the input control chip based on an underpower amplifier control instruction in the power amplifier control instruction, and improving the actual power amplifier in the output power amplifier information through the input control chip according to a preset boost instruction, wherein the preset boost instruction is used for controlling the boost output of the output end of the input control chip.
In this embodiment, when the target control circuit is an input control chip in the power amplifier control power supply module, the input control chip is controlled according to an underpower amplifier control instruction in the power amplifier control instruction, and the actual power amplifier in the output power amplifier information is improved according to a preset boost instruction by the input control chip, where the preset boost instruction is used to control the output end of the input control chip to boost and output. That is, the under power amplifier detection circuit detects that the actual power amplifier is inconsistent with the theoretical required power amplifier (the service time, the environment and the chip error), and the under power amplifier control instruction is used for controlling the input control chip to realize compensation. The preset boost command refers to a boost command of the control input control chip, wherein the control flow comprises the steps of determining theoretical input voltage of the control input control chip, boosting voltage with a specific magnitude based on the theoretical voltage, delaying for a period of time, detecting whether under-power amplification information is received or not, and ending if not; if the under power amplification information is received, the voltage difference between the voltage of the current output power amplification information and the voltage of the output power amplification information is determined, the voltage to be regulated is determined based on the voltage difference, the voltage of the current output power amplification information and the voltage of the actual theoretical power signal, and the voltage is increased according to the voltage of a specific size. For example, the voltage 5 of the actual theoretical power signal, the voltage 1 with a specific size, the voltage 4 of the current output power amplification information and the voltage 3 of the output power amplification information can determine that the voltage 2 needs to be adjusted according to the voltage difference 1 between the voltage of the current output power amplification information and the voltage of the output power amplification information and the voltage 1 with the specific size, so as to realize different accurate compensation control of different environmental influences, and actually, the optimal voltage with the specific size can be set to further improve the compensation accuracy, and normally, the smaller the voltage with the specific size is, the better the smaller the voltage with the specific size is, the more the compensation accuracy is guaranteed according to the actual setting.
The invention also provides power amplifier control equipment.
The device of the invention comprises: the power amplifier control system comprises a memory, a processor, a power amplifier control system in the power amplifier control method and a power amplifier control program which is stored in the memory and can run on the processor, wherein the power amplifier control program realizes the steps of the power amplifier control method when being executed by the processor.
The invention also provides a storage medium.
The storage medium of the present invention stores thereon a power amplifier control program which, when executed by a processor, implements the steps of the power amplifier control method described above.
The method implemented when the power amplifier control program running on the processor is executed may refer to various embodiments of the power amplifier control method of the present invention, which are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. The power amplifier control circuit is characterized by comprising a power amplifier control power supply module, a power amplifier detection circuit, an output interface and a control module, wherein the power amplifier detection circuit comprises an over power amplifier detection circuit and an under power amplifier detection circuit;
the power amplifier control power supply module is respectively connected with the power amplifier module, the power amplifier detection circuit and the control module;
the output end of the power amplifier module is respectively connected with the power amplifier detection circuit, the power amplifier lack detection circuit and the output interface, the power amplifier detection circuit is used for detecting the output power amplifier information of the power amplifier module to determine the power amplifier information, and the power amplifier lack detection circuit is used for detecting the output power amplifier information of the power amplifier module to determine the power amplifier lack information;
The control module is respectively connected with the power amplifier detection circuit, the underpower amplifier detection circuit and the power amplifier module, the control module is used for determining an overpower amplifier control instruction according to the overpower amplifier information, controlling the power amplifier module to adjust the power amplifier according to the overpower amplifier control instruction and outputting the overpower amplifier through the output interface, and/or determining an underpower amplifier control instruction according to the underpower amplifier information, controlling the power amplifier control power module to adjust the power amplifier according to the underpower amplifier control instruction and outputting the underpower amplifier control power module through the output interface, wherein the power amplifier control power module comprises an input control chip and a power control unit, the input end of the input control chip is connected with a power input interface, the control end of the input control chip is connected with the control module, and the output end of the input control chip is connected with the power amplifier module;
the power supply control unit comprises an alternating current-direct current conversion chip, the input end of the alternating current-direct current conversion chip is connected with the power input interface, the control end of the alternating current-direct current conversion chip is connected with the control module, the output end of the alternating current-direct current conversion chip is respectively connected with the power amplification module, the power amplification detection circuit and the control module, the input control chip is used for adjusting output signals of the output end of the input control chip according to the underpower amplification control instruction, the power amplification module comprises a push amplification unit, a final amplification unit and a combining output unit, the push amplification unit comprises an equalization circuit, an electric modulation attenuation circuit, a push amplification circuit and four splitters, the output end of the input control chip is connected with the input end of the equalization circuit, the electric modulation attenuation circuit, the push amplification circuit and the four splitters are sequentially connected, and the output end of the four splitters is connected with the final amplification unit;
The final amplification unit comprises a plurality of final power amplifiers, the input end of each final power amplifier is respectively connected with the output end of the four splitters, and the output end of each final power amplifier is respectively connected with the combining output unit;
the combining output unit comprises four combiners, a filter and a bidirectional coupler, wherein the input ends of the four combiners are respectively connected with the output ends of the final-stage power amplifiers, the four combiners, the filter and the bidirectional coupler are sequentially connected, the output ends of the bidirectional coupler are respectively connected with the power amplifier detection circuit, the underpower amplifier detection circuit and the output interface, and the power amplifier module is used for amplifying the power of the output signals to obtain the output power amplifier information.
2. The power amplifier control circuit of claim 1, wherein the electrically-controlled attenuation circuit comprises a first electrically-controlled attenuation circuit, a second electrically-controlled attenuation circuit and a third-stage circuit, the first electrically-controlled attenuation circuit is respectively connected with the equalization circuit, the second electrically-controlled attenuation circuit, the power amplifier detection circuit and the third-stage circuit, the second electrically-controlled attenuation circuit is connected with the push amplification circuit, the third-stage circuit is connected with the output end of the ac/dc conversion chip, and the electrically-controlled attenuation circuit is used for controlling the actual power amplifier according to the power amplifier control instruction.
3. The power amplifier control circuit of claim 2, wherein the power amplifier detection circuit comprises a voltage judgment circuit and a voltage control circuit, the voltage judgment circuit is respectively connected with the output end of the bidirectional coupler, the control module and the output end of the alternating current-direct current conversion chip, the voltage judgment circuit is respectively connected with the output end of the alternating current-direct current conversion chip, the control module and the first electrically-controlled attenuation circuit, and the power amplifier detection circuit is used for determining the power amplifier information according to the output power amplifier information of the output end of the bidirectional coupler.
4. The power amplifier control circuit of claim 3 wherein the power amplifier detection circuit comprises a power amplifier chip, a first end of the power amplifier chip is connected with the output end of the ac-dc conversion chip, a second end of the power amplifier chip is connected with the output end of the bi-directional coupler, a third end of the power amplifier chip is connected with the control module, and the power amplifier detection circuit is used for determining the power amplifier information according to the output power amplifier information of the output end of the bi-directional coupler.
5. The power amplifier control circuit of claim 4, wherein the control module comprises a single chip microcomputer chip, a reset circuit and a crystal oscillator circuit, wherein a reset port of the single chip microcomputer chip is connected with the reset circuit, a crystal oscillator port of the single chip microcomputer chip is connected with the crystal oscillator circuit, a first control port group of the single chip microcomputer chip is respectively connected with a control end of the input control chip and a control end of the alternating current-direct current conversion chip, a second control port group of the single chip microcomputer chip is respectively connected with the voltage judgment circuit and the voltage control circuit, a third control port of the single chip microcomputer chip is connected with a third end of the under power amplifier chip, and the single chip microcomputer chip is used for determining an over power amplifier control instruction according to the over power amplifier information and/or determining the under power amplifier control instruction according to the under power amplifier information.
6. A power amplifier control method, characterized in that the power amplifier control method is applied to the power amplifier control circuit of claim 1, the steps of the power amplifier control method comprising:
acquiring output power amplification information of the power amplification module, and determining actual power amplification information according to the output power amplification information;
determining a power amplifier control instruction according to the actual power amplifier information, and determining a target control circuit corresponding to the actual power amplifier information;
and regulating the actual power amplifier in the output power amplifier information according to the power amplifier control instruction and the target control circuit so as to realize power amplifier control.
7. The power amplifier control method of claim 6, wherein the step of determining actual power amplifier information from the output power amplifier information comprises:
if the output power amplifier information triggers the conduction information of the power amplifier detection circuit, determining that the actual power amplifier information is the power amplifier information;
and if the output power amplification information triggers the conduction information of the underpower amplification detection circuit, determining that the actual power amplification information is the underpower amplification information.
8. The power amplifier control method of claim 6, wherein the step of adjusting the actual power amplifier in the output power amplifier information according to the power amplifier control command and the target control circuit comprises:
If the target control circuit is an electric modulation attenuation circuit in the power amplification module, controlling the electric modulation attenuation circuit to work based on an over power amplification control instruction in the power amplification control instruction, and reducing the actual power amplification in the output power amplification information according to a preset attenuation index through the working electric modulation attenuation circuit, wherein the preset attenuation index is determined by parameters in the electric modulation attenuation circuit;
and if the target control circuit is an input control chip in the power amplifier control power supply module, controlling the input control chip based on an underpower amplifier control instruction in the power amplifier control instruction, and improving the actual power amplifier in the output power amplifier information through the input control chip according to a preset boost instruction, wherein the preset boost instruction is used for controlling the boost output of the output end of the input control chip.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102315826A (en) * | 2010-07-05 | 2012-01-11 | 北京北广科技股份有限公司 | Squelch control method of automatic gain power amplifier chain and circuit |
| CN104348420A (en) * | 2013-07-31 | 2015-02-11 | 株式会社村田制作所 | Power amplifier module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6897730B2 (en) * | 2003-03-04 | 2005-05-24 | Silicon Laboratories Inc. | Method and apparatus for controlling the output power of a power amplifier |
| TW200522335A (en) * | 2003-12-16 | 2005-07-01 | Richwave Technology Corp | Wireless output chip and related producing method with power detector |
| US8095090B2 (en) * | 2006-02-03 | 2012-01-10 | Quantance, Inc. | RF power amplifier controller circuit |
| US8174313B2 (en) * | 2010-05-17 | 2012-05-08 | Avago Technologies Wireless Ip (Singapore) Pte. Ltd. | Apparatus and method for controlling power amplifier |
| JP2015070379A (en) * | 2013-09-27 | 2015-04-13 | 日本電気株式会社 | Detection circuit and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315826A (en) * | 2010-07-05 | 2012-01-11 | 北京北广科技股份有限公司 | Squelch control method of automatic gain power amplifier chain and circuit |
| CN104348420A (en) * | 2013-07-31 | 2015-02-11 | 株式会社村田制作所 | Power amplifier module |
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