CN212231446U - Micro-energy series circuit - Google Patents
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- CN212231446U CN212231446U CN202021051646.XU CN202021051646U CN212231446U CN 212231446 U CN212231446 U CN 212231446U CN 202021051646 U CN202021051646 U CN 202021051646U CN 212231446 U CN212231446 U CN 212231446U
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Abstract
The utility model belongs to the field of energy collection and conversion, and discloses a micro-energy series circuit, which generates a ground voltage according to a micro-energy voltage and outputs the ground voltage from a grounding end when the micro-energy voltage is accessed through a radio frequency circuit; the microprocessor is provided with a first input/output port connected with the radio frequency circuit, generates a high-level control signal after being electrified and outputs the high-level control signal from the first input/output port or sets the output of the first input/output port to be in a high-resistance state, and generates a low-level control signal after triggering work and outputs the low-level control signal from the first input/output port so as to enable the ground end voltage to be communicated to the power ground; the first input/output port of the microprocessor comprises a first pull-down switching tube, so that the ground voltage has no voltage drop, the working voltage range of the radio frequency chip in the radio frequency circuit is large, and the model selection range of the radio frequency chip is expanded; and a large-current pull-down port of the microprocessor does not need to generate a control signal to communicate the ground voltage to the power ground, so that the port resource of the microprocessor is saved.
Description
Technical Field
The utility model belongs to energy acquisition conversion field especially relates to a little energy series circuit.
Background
Generating a ground voltage according to the micro-energy voltage through a radio frequency circuit and outputting the ground voltage from a ground terminal; the first unidirectional conducting component is used for conducting the voltage of the ground terminal in a unidirectional way to generate a first voltage; the microprocessor generates a power supply voltage according to the first voltage and works according to the power supply voltage; the microprocessor comprises a first input/output port internally provided with a pull-up switching tube, a capacitor between a grid electrode and a source electrode of the pull-up switching tube is charged according to a first voltage to generate a charging voltage, the pull-up switching tube is conducted according to the charging voltage to enable a drain electrode of the pull-up switching tube to be electrified and generate a power supply voltage, and the microprocessor works according to the power supply voltage; the microprocessor also generates a control signal according to the electrification of the voltage; a third input/output port of the microprocessor outputs a control signal; and a third input/output port of the microprocessor is a low-internal-resistance large-current pull-down port.
The first one-way conduction component has a voltage drop, so that the working voltage range of a radio frequency chip in the radio frequency circuit is small, the type selection range of the radio frequency chip is too narrow, and the microprocessor needs a single large-current pull-down port to generate a control signal to communicate the first voltage to a power ground, so that the grounding end of the radio frequency circuit is a stable low level, and port resources of the microprocessor are wasted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a micro-energy series circuit aims at solving the radio frequency chip lectotype scope that traditional micro-energy series circuit exists and narrow and microprocessor's the extravagant problem of port resource.
The utility model discloses a realize like this, a little energy series circuit, little energy series circuit includes:
a radio frequency circuit configured to generate a ground voltage from a micro energy voltage and output the ground voltage from a ground when the micro energy voltage is accessed;
the microprocessor is provided with a first input/output port connected with the radio frequency circuit, is configured to generate a high-level control signal after being electrified and output the high-level control signal from the first input/output port or set the output of the first input/output port to be in a high impedance state, and generates a low-level control signal after being triggered to work and outputs the low-level control signal from the first input/output port so as to connect the ground end voltage to a power ground;
the first input/output port of the microprocessor comprises a first pull-down switch tube.
In one embodiment, the microprocessor further has a second input/output port connected to the rf circuit for outputting a data signal;
the radio frequency circuitry is further configured to generate a wireless communication signal from the data signal and to transmit the wireless communication signal from a wireless link.
In one embodiment, the power supply end of the microprocessor is connected with the radio frequency circuit;
the microprocessor is also configured to be powered on to work according to the micro-energy voltage when a power supply end of the microprocessor is connected to the micro-energy voltage.
In one embodiment, the microprocessor includes a first pull-up switch tube, the first input/output port of the microprocessor further has the first pull-up switch tube, a first gate-source capacitor between a gate and a source of the first pull-up switch tube is charged according to the ground voltage to generate a first charging voltage, and the first pull-up switch tube is turned on according to the first charging voltage to electrify a drain of the first pull-up switch tube and generate a system voltage;
the micro-energy series circuit further comprises:
the first energy storage element is connected with the microprocessor and is configured to be charged according to the system voltage and output a power supply voltage;
the microprocessor is specifically configured to power up according to the supply voltage.
In one embodiment, the third input/output port of the microprocessor is connected with the radio frequency circuit;
the microprocessor further comprises a second pull-up switching tube, the third input/output port of the microprocessor is also provided with the second pull-up switching tube, when the third input/output port of the microprocessor is connected with the micro energy voltage, a second gate-source capacitor between a gate and a source of the second pull-up switching tube is charged according to the micro energy voltage to generate a second charging voltage, and the second pull-up switching tube is switched on according to the second charging voltage to enable a drain of the second pull-up switching tube to be charged and generate the system voltage.
In one embodiment, the first energy storage element comprises a first capacitor.
In one embodiment, the micro-energy series circuit further comprises:
the rectification circuit is connected with the radio frequency circuit and is configured to generate input micro-energy voltage according to the micro-energy alternating current;
and the second energy storage element is connected with the radio frequency circuit and the rectifying circuit and is configured to store electric energy according to the input micro energy voltage and output the micro energy voltage.
In one embodiment, the rectifying circuit includes a second diode, a third diode, a fourth diode, and a fifth diode;
the positive pole of the third diode and the negative pole of the second diode are a first micro-energy alternating current input end of the rectifying circuit, the positive pole of the fifth diode and the negative pole of the fourth diode are a second micro-energy alternating current input end of the rectifying circuit, the negative pole of the third diode and the negative pole of the fifth diode jointly form an input micro-energy voltage output end of the rectifying circuit, and the positive pole of the second diode and the positive pole of the fourth diode are jointly connected with a power ground.
In one embodiment, the radio frequency circuit includes a radio frequency chip, a crystal oscillator, an antenna, a first inductor, a second inductor, a third inductor, a fourth inductor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a sixth capacitor;
the crystal oscillator end of the radio frequency chip is connected with the first end of the crystal oscillator, the grounding end of the radio frequency chip is the ground voltage output end of the radio frequency circuit, the data end of the radio frequency chip is the data signal input end of the radio frequency circuit, the power end of the radio frequency chip, the first end of the third capacitor, the first end of the sixth capacitor and the first end of the first inductor jointly form the micro-energy voltage input end of the radio frequency circuit, the radio frequency end of the radio frequency chip is connected with the second end of the first inductor and the first end of the second capacitor, the second end of the second capacitor is connected with the first end of the second inductor, the second end of the second inductor is connected with the first end of the fourth capacitor and the first end of the third inductor, the second end of the third inductor is connected with the first end of the fifth capacitor, the first end of the fourth inductor and the antenna, the ground terminal of the radio frequency chip, the second terminal of the crystal oscillator, the second terminal of the fourth inductor, the second terminal of the third capacitor, the second terminal of the fourth capacitor, the second terminal of the fifth capacitor and the second terminal of the sixth capacitor are connected to a signal ground in common.
The embodiment of the utility model provides a because microprocessor's first input/output port includes the first pull-down switch tube, it is directly connected with radio frequency circuit, so there is not the pressure drop in the ground voltage, the operating voltage scope of radio frequency chip in the radio frequency circuit is great, has enlarged the lectotype scope of radio frequency chip; and the microprocessor generates a low-level control signal after triggering work and outputs the low-level control signal from the first input/output port so as to connect the ground voltage to the microprocessor of the power ground, so that a large-current pull-down port of the microprocessor does not need to generate a control signal so as to connect the ground voltage to the power ground, and the port resource of the microprocessor is saved.
Drawings
In order to more clearly illustrate the technical utility model in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram of a micro-energy series circuit according to an embodiment of the present invention;
fig. 2 is a circuit diagram of an exemplary micro-energy serial circuit microprocessor according to an embodiment of the present invention;
fig. 3 is another block diagram of a micro-energy series circuit according to an embodiment of the present invention;
fig. 4 is another block diagram of a micro-energy series circuit according to an embodiment of the present invention;
fig. 5 is another block diagram of a micro-energy series circuit according to an embodiment of the present invention;
fig. 6 is a circuit diagram of another exemplary micro-energy serial circuit microprocessor according to an embodiment of the present invention;
fig. 7 is another block diagram of a micro-energy series circuit according to an embodiment of the present invention;
fig. 8 is a circuit diagram of another exemplary micro-energy serial circuit microprocessor according to an embodiment of the present invention;
fig. 9 is a circuit diagram of an exemplary micro-energy series circuit according to an embodiment of the present invention;
fig. 10 is a circuit diagram of another exemplary micro-energy series circuit according to an embodiment of the present invention;
fig. 11 is a circuit diagram of another example of a micro-energy series circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Fig. 1 shows a module structure of a micro-energy series circuit provided by an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown, and detailed descriptions are as follows:
the micro-energy series circuit comprises a radio frequency circuit 01 and a microprocessor U10.
The radio frequency circuit 01 is configured to generate a ground voltage according to the micro-energy voltage and output the ground voltage from the ground when the micro-energy voltage is accessed; the microprocessor U10 has a first input/output port connected with the radio frequency circuit 01, and is configured to generate a high-level control signal after being powered on and output the high-level control signal from the first input/output port or set the output of the first input/output port to be in a high impedance state, and generate a low-level control signal after being triggered and output the low-level control signal from the first input/output port so that the ground voltage is communicated to the power ground; as shown in FIG. 2, the first input/output port of the microprocessor U10 includes a first pull-down switch tube M1. The first input/output port of the microprocessor U10 is a low internal resistance, high current pull-down port.
Specifically, the microprocessor U10 triggers the operation means that the microprocessor U10 enters the operation mode from the sleep mode after the voltage of the power supply terminal of the microprocessor U10 is greater than the preset voltage, and the microprocessor U10 outputs the data signal after the microprocessor U10 enters the operation mode.
The preset voltage may be a peak voltage of the micro-energy voltage, or an upper limit voltage of an operating voltage interval of the microprocessor U10.
As shown in fig. 3, the microprocessor U10 further has a second input/output port connected to the rf circuit 01 for outputting data signals;
the radio frequency circuit 01 is further configured to generate a wireless communication signal from the data signal and to transmit the wireless communication signal from the wireless link.
As shown in fig. 4, the power supply terminal of the microprocessor U10 is connected to the rf circuit 01; the microprocessor U10 is also configured to power up when the power terminal of the microprocessor U10 is connected to the micro-power voltage.
As shown in fig. 5, the micro-energy series circuit further includes a first energy storage element 02.
The first energy storage element 02 is connected to the microprocessor U10, and is configured to charge according to the system voltage and output a supply voltage.
As shown in fig. 6, the microprocessor U10 includes a first pull-up switch M2, the first input/output port of the microprocessor U10 further has a first pull-up switch M2, a first gate-source capacitor Cgs1 between the gate and the source of the first pull-up switch M2 is charged according to the ground voltage to generate a first charging voltage, and the first pull-up switch M2 is turned on according to the first charging voltage to charge the drain of the first pull-up switch M2 and generate a system voltage; the microprocessor U10 is specifically configured to operate electrically based on a supply voltage.
As shown in fig. 7, a third input/output port of the microprocessor U10 is connected to the rf circuit 01.
As shown in fig. 8, the microprocessor U10 further includes a second pull-up switch M3, the third input/output port of the microprocessor U10 further has a second pull-up switch M3, when the third input/output port of the microprocessor U10 is connected to the micro-energy voltage, a second gate-source capacitor Cgs2 between the gate and the source of the second pull-up switch M3 is charged according to the micro-energy voltage to generate a second charging voltage, and the second pull-up switch M3 is turned on according to the second charging voltage to charge the drain of the second pull-up switch M3 and generate the system voltage.
Fig. 9 shows an example circuit structure of a micro-energy series circuit provided by an embodiment of the present invention, fig. 10 shows another example circuit structure of a micro-energy series circuit provided by an embodiment of the present invention, fig. 11 shows another example circuit structure of a micro-energy series circuit provided by an embodiment of the present invention, for convenience of description, only the part related to an embodiment of the present invention is shown, and the detailed description is as follows:
the rectifier circuit 03 includes a second diode D2, a third diode D3, a fourth diode D4, and a fifth diode D5.
The anode of the third diode D3 and the cathode of the second diode D2 are a first micro-energy alternating current input end of the rectifying circuit 03, the anode of the fifth diode D5 and the cathode of the fourth diode D4 are a second micro-energy alternating current input end of the rectifying circuit 03, the cathode of the third diode D3 and the cathode of the fifth diode D5 jointly form a micro-energy voltage output end of the rectifying circuit 03, and the anode of the second diode D2 and the anode of the fourth diode D4 are commonly connected to a power ground.
The second energy storage element 04 comprises a first capacitor C1.
The first energy storage element 02 comprises a seventh capacitor C7.
The radio frequency circuit 01 includes a radio frequency chip U1, a crystal oscillator Y1, an antenna ANT, a first inductor L1, a second inductor L2, a third inductor L3, a fourth inductor L4, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6.
The crystal oscillator terminal XTAL of the rf chip U1 is connected to the first terminal of the crystal oscillator Y1, the ground terminal GND of the rf chip U1 is the ground terminal voltage output terminal of the rf circuit 01, the DATA terminal DATA of the rf chip U1 is the DATA signal input terminal of the rf circuit 01, the power terminal VDD of the rf chip U1, the first terminal of the third capacitor C3, the first terminal of the sixth capacitor C6, and the first terminal of the first inductor L1 together form the micro-energy voltage input terminal of the rf circuit 01, the rf terminal RFO of the rf chip U1 is connected to the second terminal of the first inductor L1 and the first terminal of the second capacitor C2, the second terminal of the second capacitor C2 is connected to the first terminal of the second inductor L2, the second terminal of the second inductor L2 is connected to the first terminal of the fourth capacitor C4 and the first terminal of the third inductor L3, the second terminal of the third inductor L6 is connected to the first terminal of the fifth capacitor C5, the first terminal of the fourth inductor L6327, and the ground terminal of the antenna ANT U1, and the ground terminal GND of the rf chip 1, The second terminal of the crystal oscillator Y1, the second terminal of the fourth inductor L4, the second terminal of the third capacitor C3, the second terminal of the fourth capacitor C4, the second terminal of the fifth capacitor C5, and the second terminal of the sixth capacitor C6 are connected to the signal ground in common.
There are three cases of the exemplary circuit diagram of a microprocessor:
in the first case, as shown in FIG. 9, the first input/output port PC0 of the microprocessor U10 is the ground voltage input and control signal output of the microprocessor U10; the second input/output port PC1 of the microprocessor U10 is a data signal output port of the microprocessor U10, the power supply terminal VDD of the microprocessor U10 is a micro energy voltage input port of the microprocessor U10, and the ground GND of the microprocessor U10 is connected to ground.
In the second case, as shown in FIG. 10, the first input/output port PC0 of the microprocessor U10 is the ground voltage input and control signal output of the microprocessor U10; the second input/output port PC1 of the microprocessor U10 is a data signal output terminal of the microprocessor U10, the power supply terminals VDD of the microprocessor U10 are a system voltage output terminal and a power supply voltage input terminal of the microprocessor U10, and the ground terminal GND of the microprocessor U10 is connected to ground.
In the third case, as shown in fig. 11, the first input/output port PC0 of the microprocessor U10 is the ground voltage input terminal and the control signal output terminal of the microprocessor U10; the second input/output port PC1 of the microprocessor U10 is a data signal output terminal of the microprocessor, the power supply terminals VDD of the microprocessor U10 are a system voltage output terminal and a power supply voltage input terminal of the microprocessor U10, the ground terminal GND of the microprocessor U10 is connected to a power ground, and the third input/output port PC2 of the microprocessor U10 is a micro-energy voltage input terminal of the microprocessor U10.
The circuits shown in fig. 9 and 11 are further described below in conjunction with the working principle:
the micro-energy alternating current VAA is rectified by a second diode D2, a third diode D3, a fourth diode D4 and a fifth diode D5 to generate input micro-energy voltage, and a first capacitor C1 stores electric energy according to the input micro-energy voltage and outputs micro-energy voltage VCC; the micro energy voltage VCC is input to a power supply end VDD of the radio frequency chip U1, the radio frequency chip U1 generates a ground end voltage according to the micro energy voltage VCC and outputs the ground end voltage from a ground end GND of the radio frequency chip U1, the microprocessor U10 is provided with a first input/output port PC0 connected with the ground end GND of the radio frequency chip U1, the microprocessor U10 generates a high-level control signal after being powered on and outputs the high-level control signal from the first input/output port or sets the output of the first input/output port to be in a high resistance state, and generates a low-level control signal after being triggered to work and outputs the low-level control signal from the first input/output port PC0 so that the ground end voltage; as shown in FIG. 2, the first input/output port of the microprocessor U10 includes a first pull-down switch tube M1.
Meanwhile, the microprocessor U10 generates a data signal after being triggered, and outputs the data signal from the second input/output port PC 1; the DATA terminal DATA of the rf chip U1 receives the DATA signal, and the rf circuit 01 generates a wireless communication signal according to the DATA signal and transmits the wireless communication signal from the wireless link.
The microprocessor U10 has three implementation modes for powering on and triggering:
in a first implementation manner, as shown in fig. 9, a power supply terminal VDD of the microprocessor U10 is connected to a micro energy voltage, and the microprocessor U10 is powered on according to the micro energy voltage and triggers to operate when the micro energy voltage is greater than a preset voltage.
As shown in fig. 10 and 6, the first input/output port PC0 of the microprocessor U10 further has a first pull-up switch M2, a first gate-source capacitor Cgs1 between the gate and the source of the first pull-up switch M2 charges according to the ground voltage to generate a first charging voltage, and the first pull-up switch M2 is turned on according to the first charging voltage to charge the drain of the first pull-up switch M2 and generate a system voltage; the seventh capacitor C7 is charged according to the system voltage and outputs the supply voltage, and the microprocessor U10 is powered on according to the supply voltage and is triggered to work when the supply voltage is greater than the preset voltage.
Third implementation as shown in fig. 11 and 8, based on the second implementation, the third input/output port PC2 of the microprocessor accesses the micro-energy voltage; the third input/output port P2 of the microprocessor further has a second pull-up switch M3, when the third input/output port PC2 of the microprocessor is connected with the micro-energy voltage, a second gate-source capacitor Cgs2 between the gate and the source of the second pull-up switch M3 is charged according to the micro-energy voltage to generate a second charging voltage, and the second pull-up switch M3 is turned on according to the second charging voltage to power the drain of the second pull-up switch M3 and generate a system voltage, that is: the first pull-up switch tube M2 and the second pull-up switch tube M3 jointly generate system voltage, the seventh capacitor C7 charges according to the system voltage and outputs power supply voltage, and the microprocessor U10 is powered on according to the power supply voltage and triggers work when the power supply voltage is larger than preset voltage.
The embodiment of the utility model comprises a radio frequency circuit and a microprocessor; when the radio frequency circuit is connected with the micro-energy voltage, generating a ground voltage according to the micro-energy voltage and outputting the ground voltage from the ground terminal; the microprocessor is provided with a first input/output port connected with the radio frequency circuit, generates a high-level control signal after being electrified and outputs the high-level control signal from the first input/output port or sets the first input/output port to be in a high-resistance state, and generates a low-level control signal after triggering work and outputs the low-level control signal from the first input/output port so as to enable the ground end voltage to be communicated to the power ground; the first input/output port of the microprocessor comprises a first pull-down switch tube; because the first input/output port of the microprocessor comprises the first pull-down switch tube which is directly connected with the radio frequency circuit, the ground voltage has no voltage drop, the working voltage range of the radio frequency chip in the radio frequency circuit is larger, and the model selection range of the radio frequency chip is expanded; and the microprocessor generates a low-level control signal after triggering work and outputs the low-level control signal from the first input/output port so as to connect the ground voltage to the microprocessor of the power ground, so that a large-current pull-down port of the microprocessor does not need to generate a control signal so as to connect the ground voltage to the power ground, and the port resource of the microprocessor is saved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. A micro-energy series circuit, comprising:
a radio frequency circuit configured to generate a ground voltage from a micro energy voltage and output the ground voltage from a ground when the micro energy voltage is accessed;
the microprocessor is provided with a first input/output port connected with the radio frequency circuit, is configured to generate a high-level control signal after being powered on and output the high-level control signal from the first input/output port or set the output of the first input/output port to be in a high impedance state, and generates a low-level control signal after being triggered to work and outputs the low-level control signal from the first input/output port so as to connect the ground end voltage to a power ground;
the first input/output port of the microprocessor comprises a first pull-down switch tube.
2. The micro-energy series circuit of claim 1, wherein said microprocessor further has a second input-output port connected to said radio frequency circuit for outputting a data signal;
the radio frequency circuitry is further configured to generate a wireless communication signal from the data signal and to transmit the wireless communication signal from a wireless link.
3. The micro-energy series circuit according to claim 1, wherein a power supply terminal of said microprocessor is connected to said radio frequency circuit;
the microprocessor is also configured to be powered on to work according to the micro-energy voltage when a power supply end of the microprocessor is connected to the micro-energy voltage.
4. The micro-energy series circuit of claim 1,
the microprocessor comprises a first pull-up switching tube, a first input/output port of the microprocessor is also provided with the first pull-up switching tube, a first gate-source capacitor between a grid electrode and a source electrode of the first pull-up switching tube is charged according to the ground voltage to generate a first charging voltage, and the first pull-up switching tube is conducted according to the first charging voltage to enable a drain electrode of the first pull-up switching tube to be electrified and generate a system voltage;
the micro-energy series circuit further comprises:
the first energy storage element is connected with the microprocessor and is configured to be charged according to the system voltage and output a power supply voltage;
the microprocessor is specifically configured to power up according to the supply voltage.
5. The micro-energy series circuit of claim 4, wherein a third input-output port of the microprocessor is connected to the radio frequency circuit;
the microprocessor further comprises a second pull-up switching tube, the third input/output port of the microprocessor is also provided with the second pull-up switching tube, when the third input/output port of the microprocessor is connected with the micro energy voltage, a second gate-source capacitor between a gate and a source of the second pull-up switching tube is charged according to the micro energy voltage to generate a second charging voltage, and the second pull-up switching tube is switched on according to the second charging voltage to enable a drain of the second pull-up switching tube to be charged and generate the system voltage.
6. The micro-energy series circuit of claim 4, wherein said first energy storage element comprises a first capacitor.
7. The micro-energy series circuit of claim 1, further comprising:
the rectification circuit is connected with the radio frequency circuit and is configured to generate input micro-energy voltage according to the micro-energy alternating current;
and the second energy storage element is connected with the radio frequency circuit and the rectifying circuit and is configured to store electric energy according to the input micro energy voltage and output the micro energy voltage.
8. The micro-energy series circuit of claim 7, wherein the rectifying circuit comprises a second diode, a third diode, a fourth diode, and a fifth diode;
the positive pole of the third diode and the negative pole of the second diode are a first micro-energy alternating current input end of the rectifying circuit, the positive pole of the fifth diode and the negative pole of the fourth diode are a second micro-energy alternating current input end of the rectifying circuit, the negative pole of the third diode and the negative pole of the fifth diode jointly form an input micro-energy voltage output end of the rectifying circuit, and the positive pole of the second diode and the positive pole of the fourth diode are jointly connected with a power ground.
9. The micro-energy series circuit of claim 1, wherein the radio frequency circuit comprises a radio frequency chip, a crystal oscillator, an antenna, a first inductor, a second inductor, a third inductor, a fourth inductor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a sixth capacitor;
the crystal oscillator end of the radio frequency chip is connected with the first end of the crystal oscillator, the grounding end of the radio frequency chip is the ground voltage output end of the radio frequency circuit, the data end of the radio frequency chip is the data signal input end of the radio frequency circuit, the power end of the radio frequency chip, the first end of the third capacitor, the first end of the sixth capacitor and the first end of the first inductor jointly form the micro-energy voltage input end of the radio frequency circuit, the radio frequency end of the radio frequency chip is connected with the second end of the first inductor and the first end of the second capacitor, the second end of the second capacitor is connected with the first end of the second inductor, the second end of the second inductor is connected with the first end of the fourth capacitor and the first end of the third inductor, the second end of the third inductor is connected with the first end of the fifth capacitor, the first end of the fourth inductor and the antenna, the ground terminal of the radio frequency chip, the second terminal of the crystal oscillator, the second terminal of the fourth inductor, the second terminal of the third capacitor, the second terminal of the fourth capacitor, the second terminal of the fifth capacitor and the second terminal of the sixth capacitor are connected to a signal ground in common.
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| CN202021051646.XU CN212231446U (en) | 2020-06-09 | 2020-06-09 | Micro-energy series circuit |
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| CN202021051646.XU CN212231446U (en) | 2020-06-09 | 2020-06-09 | Micro-energy series circuit |
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