CN216670608U - Self-adaptive voltage power control circuit - Google Patents
Self-adaptive voltage power control circuit Download PDFInfo
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- CN216670608U CN216670608U CN202220218109.2U CN202220218109U CN216670608U CN 216670608 U CN216670608 U CN 216670608U CN 202220218109 U CN202220218109 U CN 202220218109U CN 216670608 U CN216670608 U CN 216670608U
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- voltage
- operational amplifier
- amplifier circuit
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a self-adaptive voltage power control circuit which comprises a voltage division circuit connected with the positive terminal of a battery, wherein the voltage division circuit is connected with the ADC input of an MCU, the DAC output of the MCU is connected with the inverting input end of a second operational amplifier circuit, the output end of a first operational amplifier circuit is connected with the non-inverting input end of the second operational amplifier circuit, the output end of the second operational amplifier circuit is connected with a radio frequency power tube, the non-inverting input end of the first operational amplifier circuit is connected with a third resistor and a first resistor which are connected in series, the inverting input end of the first operational amplifier circuit is connected with a second resistor, and the first resistor and the second resistor are connected with the positive terminal of the battery. According to the utility model, the current change of the radio frequency power tube is detected by the first operational amplifier circuit, the voltage output by the first operational amplifier circuit is compared with the voltage output by the DAC of the MCU by the second operational amplifier circuit, and the grid voltage of the radio frequency power tube is output and controlled, so that the radio frequency output power is stabilized at a certain value and does not change along with the voltage change of the battery.
Description
Technical Field
The utility model relates to the technical field of communication, in particular to a self-adaptive voltage power control circuit.
Background
The radio frequency power of the channel communication terminal can be changed due to different voltage outputs of the battery for supplying power, so that the battery is in a fully charged state, and the radio frequency output power is maximum; as the charge of the battery decreases, the voltage decreases, the transmit power decreases, causing signal instability of the communication terminal and the life of the battery.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned shortcomings in the prior art, an object of the present invention is to provide an adaptive voltage power control circuit to overcome the shortcomings in the prior art.
In order to achieve the purpose, the utility model provides a self-adaptive voltage power control circuit, which comprises a voltage stabilizing circuit, a voltage dividing circuit, a second resistor and a first resistor which are respectively connected with the positive terminal of a battery, wherein one output end of the voltage stabilizing circuit is connected with the battery, the other output end of the voltage stabilizing circuit is connected with an MCU (microprogrammed control unit), and the voltage stabilizing circuit is used for supplying power to the MCU; one output end of the voltage division circuit is connected with the battery, the other output end of the voltage division circuit is connected with the input end of the ADC of the MCU, and the voltage division circuit is used for providing a detection value for judging the current battery voltage for the input end of the ADC of the MCU; one end of the second resistor is connected with the battery, and the other end of the second resistor is connected with the inverting input end of the first operational amplifier circuit; one end of the first resistor is connected with the battery, the other end of the first resistor is connected with one end of the third resistor, and the other end of the first resistor is connected with the radio frequency power tube; the other end of the third resistor is connected with the non-inverting input end of the first operational amplifier circuit, and the first operational amplifier circuit is used for detecting the current change of the radio frequency power tube; the output end of the first operational amplifier circuit is connected with the non-inverting input end of the second operational amplifier circuit, the DAC output end of the MCU is connected with the inverting input end of the second operational amplifier circuit, the output end of the second operational amplifier circuit is connected with the grid electrode of the radio frequency power tube, the second operational amplifier circuit is used for comparing the voltage output by the first operational amplifier circuit with the voltage of the DAC output end of the MCU, and the grid electrode voltage of the radio frequency power tube is controlled by the voltage of the output end of the second operational amplifier circuit.
According to the technical scheme, the current change of the radio-frequency power tube is detected through the first operational amplifier circuit, the voltage output by the first operational amplifier circuit is compared with the voltage of the DAC output end of the MCU through the second operational amplifier circuit, so that the voltage of the output end of the second operational amplifier circuit controls the grid voltage of the radio-frequency power tube, the radio-frequency output power is stabilized at a certain value and does not change along with the voltage change of a BATTERY (BATTERY).
As a further description of the adaptive voltage power control circuit according to the present invention, preferably, the voltage output by the DAC of the MCU is a fixed value that is adjusted according to the characteristics of the rf power tube.
The utility model has the following beneficial effects: the utility model detects the current change of the radio frequency power tube through the first operational amplifier circuit, and the second operational amplifier circuit compares the voltage output by the first operational amplifier circuit with the voltage of the DAC output end of the MCU, so that the voltage of the output end of the second operational amplifier circuit controls the grid voltage of the radio frequency power tube, and the radio frequency output power is stabilized at a certain value and does not change along with the voltage change of a BATTERY (BATTERY).
Drawings
Fig. 1 is a circuit diagram of an adaptive voltage power control circuit of the present invention.
Fig. 2 is a circuit diagram of the voltage dividing circuit of the present invention.
Detailed Description
To further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solutions of the present invention and are not to limit the present invention.
As shown in fig. 1, an adaptive voltage power control circuit includes a voltage regulator circuit 2, a voltage divider circuit 3, a second resistor 4 and a first resistor 5, which are respectively connected to the positive terminal of a battery 1, wherein one output terminal of the voltage regulator circuit 2 is connected to the battery 1, the other output terminal of the voltage regulator circuit 2 is connected to an MCU6, the voltage regulator circuit 2 adopts a voltage regulator chip with a model of MD53R33, and the battery 1 supplies power to an MCU6 through the voltage regulator circuit 2. One output end of the voltage division circuit 3 is connected with the battery 1, and the other output end of the voltage division circuit 3 is connected with the ADC input end of the MCU6, as shown in fig. 2, for the circuit diagram of the voltage division circuit 3, the voltage division circuit 3 is configured to provide a detection value for judging the current battery voltage for the ADC input end of the MCU 6. One end of the second resistor 4 is connected with the battery 1, and the other end of the second resistor 4 is connected with the inverting input end of the first operational amplifier circuit 7. One end of the first resistor 5 is connected with the battery 1, the other end of the first resistor 5 is connected with one end of the third resistor 8, and the other end of the first resistor 5 is connected with the radio frequency power tube 10. The other end of the third resistor 8 is connected with the non-inverting input end of the first operational amplifier circuit 7, the first operational amplifier circuit 7 is used for detecting the current change of the radio frequency power tube 10, and the first operational amplifier circuit 7 detects the current change of the radio frequency power tube 10 through the voltage change generated by the second resistor 4, the first resistor 5 and the third resistor 8. The output end of the first operational amplifier circuit 7 is connected with the non-inverting input end of the second operational amplifier circuit 9, the DAC output end of the MCU6 is connected with the inverting input end of the second operational amplifier circuit 9, the output end of the second operational amplifier circuit 9 is connected with the gate of the rf power transistor 10, and the second operational amplifier circuit 9 is configured to compare the voltage output by the first operational amplifier circuit 7 with the voltage output by the DAC of the MCU6, and further control the gate voltage of the rf power transistor 10 through the voltage at the output end of the second operational amplifier circuit. That is, when the voltage of the battery 1 is low, the first operational amplifier circuit 7 outputs a high level, and compares the high level with the voltage (fixed value) output by the DAC of the MCU6, and when the second operational amplifier circuit 9 outputs a high level, controls the gate voltage of the rf power transistor 10 to be a high level. The first operational amplifier circuit 7 compares the voltage difference generated by the second resistor 4, the first resistor 5 and the third resistor 8, so as to detect the voltage change of the rf power tube 10. The model of the MCU6 is STM32F103RB, the models of the first operational amplifier circuit 7 and the second operational amplifier circuit 9 are NJM2904V, and the model of the radio frequency power tube 10 is RQA 0009. The current change of the radio-frequency power tube is detected through the first operational amplifier circuit, the voltage output by the first operational amplifier circuit is compared with the voltage of the DAC output end of the MCU through the second operational amplifier circuit, and then the grid voltage of the radio-frequency power tube is controlled through the voltage of the output end of the second operational amplifier circuit, so that the radio-frequency output power is stabilized at a certain value and does not change along with the voltage change of a BATTERY (BATTERY). The voltage output by the DAC of the MCU6 is a preset fixed value, and is adjusted according to the characteristics of the rf power tube 10.
It should be noted that the above-mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent substitutions, or improvements may be made by those skilled in the art within the spirit and principles of the utility model. The scope of the utility model is to be determined by the appended claims.
Claims (2)
1. A self-adaptive voltage power control circuit is characterized by comprising a voltage stabilizing circuit (2), a voltage dividing circuit (3), a second resistor (4) and a first resistor (5) which are respectively connected with the positive terminal of a battery (1),
one output end of the voltage stabilizing circuit (2) is connected with the battery (1), the other output end of the voltage stabilizing circuit (2) is connected with the MCU (6), and the voltage stabilizing circuit (2) is used for supplying power to the MCU (6);
one output end of the voltage division circuit (3) is connected with the battery (1), the other output end of the voltage division circuit (3) is connected with the ADC input end of the MCU (6), and the voltage division circuit (3) is used for providing a detection value for judging the current battery voltage for the ADC input end of the MCU (6);
one end of the second resistor (4) is connected with the battery (1), and the other end of the second resistor (4) is connected with the inverting input end of the first operational amplifier circuit (7); one end of the first resistor (5) is connected with the battery (1), the other end of the first resistor (5) is connected with one end of the third resistor (8), and meanwhile the other end of the first resistor (5) is connected with the radio frequency power tube (10); the other end of the third resistor (8) is connected with the non-inverting input end of the first operational amplifier circuit (7), and the first operational amplifier circuit (7) is used for detecting the current change of the radio-frequency power tube (10);
the output end of the first operational amplifier circuit (7) is connected with the non-inverting input end of the second operational amplifier circuit (9), the DAC output end of the MCU (6) is connected with the inverting input end of the second operational amplifier circuit (9), the output end of the second operational amplifier circuit (9) is connected with the grid electrode of the radio frequency power tube (10), the second operational amplifier circuit (9) is used for comparing the voltage output by the first operational amplifier circuit (7) with the voltage of the DAC output end of the MCU (6), and the grid electrode voltage of the radio frequency power tube (10) is controlled by the voltage of the output end of the second operational amplifier circuit (9).
2. The adaptive voltage power control circuit according to claim 1, characterized in that the voltage at the DAC output of the MCU (6) is a fixed value that is tuned according to the characteristics of the rf power tube (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220218109.2U CN216670608U (en) | 2022-01-26 | 2022-01-26 | Self-adaptive voltage power control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220218109.2U CN216670608U (en) | 2022-01-26 | 2022-01-26 | Self-adaptive voltage power control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216670608U true CN216670608U (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220218109.2U Active CN216670608U (en) | 2022-01-26 | 2022-01-26 | Self-adaptive voltage power control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216670608U (en) |
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2022
- 2022-01-26 CN CN202220218109.2U patent/CN216670608U/en active Active
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