CN112152660A - Control method and device of radio frequency circuit and electronic equipment - Google Patents
Control method and device of radio frequency circuit and electronic equipment Download PDFInfo
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- CN112152660A CN112152660A CN202011025877.8A CN202011025877A CN112152660A CN 112152660 A CN112152660 A CN 112152660A CN 202011025877 A CN202011025877 A CN 202011025877A CN 112152660 A CN112152660 A CN 112152660A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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Abstract
The embodiment of the application discloses a control method and device of a radio frequency circuit and electronic equipment, and belongs to the technical field of radio frequency. The method comprises the following steps: acquiring output current of a power amplifier in a radio frequency circuit; adjusting the impedance-adjustable component in response to the current value of the output current being greater than the first current threshold; obtaining the output current of the power amplifier after the ith impedance adjustment; and stopping adjusting the impedance adjustable component in response to the current value of the output current meeting the adjustment ending condition. According to the embodiment of the application, the output current of the power amplifier in the radio frequency circuit is monitored, and when the current value is larger than the first current threshold value, the impedance adjustable component is controlled to adjust, so that the load traction of the power amplifier is adjusted, the working current of the radio frequency circuit is reduced to meet the adjustment finishing condition, the power supply current value of the radio frequency circuit, which is conveyed by a battery of the electronic equipment, is reduced, the radio frequency power consumption of the electronic equipment is reduced, the cruising ability of the battery is improved, and the service life of the battery is prolonged.
Description
Technical Field
The embodiment of the application relates to the technical field of radio frequency, in particular to a control method and device of a radio frequency circuit and electronic equipment.
Background
A Power Amplifier (PA) in an electronic device is an important component of a radio frequency circuit, and is used for performing power amplification on a previous-stage signal to meet a signal transmission power requirement. The power consumption generated by the power amplifier in the working state is the main part of the operation power consumption of the electronic equipment, so that the whole power consumption of the electronic equipment can be effectively reduced by reducing the power consumption of the power amplifier.
In the related art, a technician separately debugs a radio frequency circuit at a debugging stage of an electronic device, comprehensively considers each working frequency band of a power amplifier, and adjusts a load pull (loadpull) parameter of the radio frequency circuit to a parameter corresponding to an optimal power consumption point, so as to reduce the operating power consumption of the power amplifier.
However, the loadpull parameter adjustment is only for the motherboard of the radio frequency circuit, and the power consumption of the whole electronic device after the antenna is installed is not considered in the debugging process, so that after the antenna is installed, the power consumption of the electronic device during operation is higher than the optimal power consumption point, and the cruising ability of the battery is reduced.
Disclosure of Invention
The embodiment of the application provides a control method and device of a radio frequency circuit and electronic equipment. The technical scheme is as follows:
in one aspect, an embodiment of the present application provides a method for controlling a radio frequency circuit, where the method includes:
acquiring output current of a power amplifier in a radio frequency circuit;
responding to the current value of the output current being larger than a first current threshold value, and adjusting an impedance-adjustable component, wherein an input end of the impedance-adjustable component is connected with an output end of the power amplifier, and the impedance-adjustable component is used for adjusting load traction of the power amplifier;
obtaining the output current of the power amplifier after the ith impedance adjustment, wherein i is a positive integer;
and stopping adjusting the impedance adjustable component in response to the current value of the output current meeting an adjustment ending condition, wherein the current value is smaller than the first current threshold when the adjustment ending condition is met.
In another aspect, an embodiment of the present application provides a control apparatus for a radio frequency circuit, where the apparatus includes:
the first acquisition module is used for acquiring the output current of a power amplifier in the radio frequency circuit;
the first adjusting module is used for adjusting an impedance adjustable component in response to the current value of the output current being greater than a first current threshold, wherein the input end of the impedance adjustable component is connected with the output end of the power amplifier, and the impedance adjustable component is used for adjusting load traction of the power amplifier;
the second acquisition module is used for acquiring the output current of the power amplifier after the ith impedance adjustment, wherein i is a positive integer;
the first control module is used for responding to the condition that the current value of the output current meets the adjustment ending condition, and stopping adjusting the impedance adjustable component, wherein the current value is smaller than the first current threshold when the adjustment ending condition is met.
In another aspect, an embodiment of the present application provides an electronic device, which includes a radio frequency circuit, an impedance-adjustable component, an antenna assembly, a processor, and a memory;
the output end of a power amplifier in the radio frequency circuit is connected with the input end of the impedance adjustable component, and the output end of the impedance adjustable component is connected with the input end of the antenna component;
the memory has stored therein at least one instruction, at least one program, set of codes or set of instructions that is loaded and executed by the processor to implement the method of controlling a radio frequency circuit as described in the above aspect.
According to an aspect of the application, a computer program product or computer program is provided, comprising computer instructions, the computer instructions being stored in a computer readable storage medium. The processor of the electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device executes the control method of the radio frequency circuit provided in the various alternative implementations of the above-mentioned aspects.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
in the embodiment of the application, the output current of the power amplifier in the radio frequency circuit is monitored, and when the current value is greater than the first current threshold value, the impedance adjustable component is controlled to adjust, so that the load traction of the power amplifier is adjusted, the working current of the radio frequency circuit is reduced to meet the adjustment finishing condition, the power supply current value of the radio frequency circuit, which is conveyed by a battery of the electronic equipment, is reduced, the radio frequency power consumption of the electronic equipment is reduced, and the cruising ability and the service life of the battery are improved.
Drawings
Fig. 1 is a block diagram illustrating an internal structure of an electronic device according to an exemplary embodiment of the present application;
fig. 2 is a flowchart illustrating a method for controlling a radio frequency circuit according to an exemplary embodiment of the present application;
fig. 3 is a flowchart illustrating a method for controlling a radio frequency circuit according to another exemplary embodiment of the present application;
FIG. 4 illustrates a Smith chart provided by an exemplary embodiment of the present application;
FIG. 5 illustrates an equivalent circuit diagram of an impedance tunable assembly provided by an exemplary embodiment of the present application;
fig. 6 is a flowchart illustrating a method for controlling a radio frequency circuit according to another exemplary embodiment of the present application;
fig. 7 is a flowchart illustrating a method for controlling a radio frequency circuit according to another exemplary embodiment of the present application;
fig. 8 is a block diagram illustrating a control apparatus of a radio frequency circuit according to an exemplary embodiment of the present application;
fig. 9 shows a block diagram of an electronic device according to an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the related art, since the power consumption generated by the power amplifier in the operating state is a main part of the operating power consumption of the electronic device, a technician separately debugs the radio frequency circuit in the debugging stage of the electronic device, comprehensively considers each operating frequency band of the power amplifier, and adjusts the load pulling parameter of the radio frequency circuit to a parameter corresponding to the optimal power consumption point, so as to reduce the operating power consumption of the power amplifier. However, in the related art, the adjustment process of the antenna and the radio frequency circuit is independent, that is, the parameter adjustment is only for the main board of the radio frequency circuit, and the power consumption of the whole electronic device after the antenna is installed is not considered in the debugging process, so that the power consumption of the electronic device during operation deviates from the optimal power consumption point after the antenna is installed, and the cruising ability of the battery is reduced.
In order to solve the above-mentioned problems in the related art, an embodiment of the present invention provides a method for controlling a radio frequency circuit, as shown in fig. 1, an electronic device is provided with a radio frequency transceiver chip 101, a power amplifier 102, an antenna switch module 103, an impedance adjustable component 104, and an antenna assembly 105, where the radio frequency transceiver chip 101 is an element for receiving, transmitting, demodulating, and modulating a radio frequency signal, and the antenna switch module 103 is used for controlling an operating frequency band of the antenna assembly 105. The power of the radio frequency signal output by the radio frequency transceiver chip 101 is very low, and needs to be amplified by the power amplifier 102, and the power consumption generated by the power amplifier 102 is a main part of the operating power consumption of the electronic device, so that the electronic device monitors the output current of the power amplifier 102 in real time, when the current value of the output current is greater than a first current threshold, the electronic device adjusts the impedance adjustable component 104, so that the load traction of the power amplifier is adjusted correspondingly, the load traction of the power amplifier 102 is adjusted correspondingly, and when the current value of the output current is reduced to meet the adjustment ending condition, the impedance adjustable component 104 is stopped being adjusted, so that the power supply current value of the radio frequency circuit is reduced, thereby reducing the radio frequency power consumption of the electronic device and improving the battery endurance.
Fig. 2 shows a flowchart of a control method of a radio frequency circuit according to an exemplary embodiment of the present application. The embodiment is described by taking the method as an example for the electronic device shown in fig. 1, and the method includes the following steps:
In a front-stage circuit connected with a radio frequency transceiver chip, the power of a radio frequency signal is very low, and usually needs to be amplified by a multi-stage power amplifier to reach the radio frequency power meeting the radiation requirement of an antenna assembly, while the power consumption generated by the power amplifier in a working state is the main part of the operation power consumption of the electronic equipment. In the embodiment of the application, the electronic device obtains the output current of the power amplifier in the radio frequency circuit, and judges whether the power consumption of the electronic device is too high according to the current value of the output current.
In a possible implementation manner, a current monitoring component is provided in the electronic device, and the current monitoring component is configured to monitor an output current of the power amplifier, and a baseband chip is further provided in the electronic device, and the baseband chip is configured to perform digital signal processing on a wireless transceiver signal in the electronic device, and control the current monitoring component to perform current monitoring, control and adjust an impedance adjustable component, and the like, that is, the baseband chip in the electronic device is configured to perform relevant steps of the control method of the radio frequency circuit in this application.
Optionally, the electronic device obtains the output current of the power amplifier in the radio frequency circuit in real time through the current monitoring component; alternatively, the electronic device obtains the output current at predetermined time intervals, which is not limited in this embodiment of the application.
The first current threshold is set by a developer in advance according to each working frequency band of the radio frequency circuit, and when the current value of the output current is greater than the first current threshold, the electronic device determines that the current working state is far away from the optimal power consumption point of the electronic device, and the load traction adjustment of the power amplification circuit is needed. The impedance tunable component is a component for adjusting the load pulling of the power amplifier.
In a possible implementation manner, when the current value of the output current is greater than the first current threshold, the electronic device triggers an instruction to adjust the impedance-adjustable component, so that the load pull of the power amplifier is adjusted to a load pull near the optimal power consumption point, thereby reducing the current value of the output current, that is, the current value of the supply current transmitted from the battery to the radio frequency circuit, and thus reducing the radio frequency power consumption.
Optionally, the impedance-adjustable component is a pure inductor circuit including an adjustable inductor, or the impedance-adjustable component is a pure capacitor circuit including an adjustable capacitor, or the impedance-adjustable component is a combined circuit (e.g., a tunable switch) including an adjustable inductor and an adjustable capacitor. The electronic device adjusts an impedance state of the impedance-tunable component by adjusting at least one of a capacitance and an inductance in the impedance-tunable component, thereby adjusting a load pull of the power amplifier. The embodiments of the present application do not limit this.
Since the electronic device cannot determine to which impedance state the impedance-adjustable component is adjusted, and the current value of the output current can meet the adjustment ending condition, and different adjustment modes may cause the current value of the output current to increase or decrease, the current value of the output current needs to be adjusted for many times to meet the adjustment ending condition. In a possible implementation manner, while the impedance-adjustable component is adjusted, the electronic device obtains the output current of the power amplifier after impedance adjustment in real time through the current monitoring component, so as to determine whether to stop adjusting the impedance-adjustable component.
Illustratively, a preset adjustment amplitude is stored in the electronic device, the electronic device gradually adjusts the impedance adjustable component according to the preset adjustment amplitude, and obtains the output current through the current monitoring component after adjusting the impedance adjustable component according to the preset adjustment amplitude each time.
And 204, in response to that the current value of the output current meets an adjustment ending condition, stopping adjusting the impedance-adjustable component, wherein the current value is smaller than the first current threshold when the adjustment ending condition is met.
When the current value of the output current meets the adjustment ending condition, the power consumption of the radio frequency circuit is close to the optimal power consumption point, and the adjustment ending condition is determined by a developer in advance according to the output current corresponding to each working frequency band of the radio frequency circuit. In a possible implementation manner, the electronic device obtains the current value of the output current after each impedance adjustment in real time, and determines whether the current value meets the adjustment ending condition, and when the current value of the output current after the ith impedance adjustment meets the adjustment ending condition, the impedance adjustable component is stopped being adjusted, so that the impedance adjustable component maintains the impedance state meeting the adjustment ending condition, and the radio frequency circuit is ensured to be capable of working at a lower current value in the current working state, thereby reducing the power consumption of the electronic device.
In summary, in the embodiment of the present application, by monitoring the output current of the power amplifier in the radio frequency circuit, and when the current value is greater than the first current threshold, the impedance-adjustable component is controlled to adjust, and then the load traction of the power amplifier is adjusted, so that the working current of the radio frequency circuit is reduced to meet the adjustment end condition, thereby reducing the power supply current value transmitted to the radio frequency circuit by the battery of the electronic device, reducing the radio frequency power consumption of the electronic device, and improving the cruising ability and the service life of the battery.
The impedance state of the impedance adjustable component and the current value of the output current have a certain change rule, the speed of the current value meeting the adjustment finishing condition is different under different adjustment modes, and the power consumption generated in the adjustment process is different, so that the electronic equipment firstly needs to determine the target impedance adjustment direction and adjust the impedance adjustable component according to the target impedance adjustment direction. Fig. 3 is a flowchart illustrating a control method of a radio frequency circuit according to an exemplary embodiment of the present application. The embodiment is described by taking the method as an example for the electronic device shown in fig. 1, and the method includes the following steps:
For a specific implementation of step 301, reference may be made to step 201 described above, and details of this embodiment are not described herein again.
In response to the current value of the output current being greater than the first current threshold value, a target impedance adjustment direction is determined, the target impedance adjustment direction being either clockwise or counterclockwise along a resistance circle in a Smith Chart (Smith Chart).
Smith charts are computed plots of a family of equators of normalized input impedance (or admittance) plotted on a scattering plane of the reflection system. As shown in fig. 4, the circular lines in the smith chart represent real values of impedance, i.e., resistance values, and the middle horizontal line and the arcs radiating upward and downward from the right end point represent imaginary values of impedance, i.e., resistance generated by a capacitor or an inductor at a high frequency, wherein the imaginary values above the horizontal line are positive and the imaginary values below the horizontal line are negative. The middle point (1+ j0) in the smith chart represents a matched resistance value with a reflection coefficient value of zero. The impedance in the diagram approximately corresponds to a high current region, a medium current region and a low current region from top to bottom, the specific current values corresponding to the impedance at the same position are different under different radio frequency circuit working frequency bands, and fig. 4 shows the distribution of the current values under the working frequency bands, and the current values are approximately decreased from 589mA above to 409mA below. Therefore, when the resistance value of the rf circuit is not changed, the imaginary value (i.e., the inductance value) of the impedance is adjusted, so that the impedance value moves along an equal resistance circle in the smith chart, thereby changing the output current of the power amplifier to a corresponding current value. For example, when the resistance value is 0, the position of the impedance can be moved along the equal resistance circle 401 by adjusting the inductance or the capacitance of the impedance-tunable element.
In a possible embodiment, according to the impedance and current variation law shown in the smith chart, when the resistance is not changed, the impedance value can be moved clockwise or counterclockwise along the equal resistance circle by changing the reactance, and since the current value corresponding to the lowest point of the equal resistance circle in the graph is the minimum, it is necessary to adjust the impedance-adjustable component to the position near the lowest point, including both the clockwise and counterclockwise impedance adjustment directions. When the current value of the output current is larger than the first current threshold value, the electronic equipment determines the target impedance adjusting direction, so that the impedance adjustable circuit is adjusted according to the target impedance adjusting direction, the current value of the output current is reduced in a fastest mode, the impedance adjusting efficiency is improved, and extra power consumption caused by impedance adjustment is reduced.
Since the same current value may correspond to two impedance values in the equal resistance circle, and the electronic device cannot determine the position of the current impedance value in the smith original image, that is, it cannot be determined whether the clockwise direction or the counterclockwise direction is the direction that can rapidly decrease the current value, it is necessary to try to adjust the impedance-adjustable component, and determine the target impedance adjustment direction according to the change of the current value, in a possible embodiment, step 302 includes the following steps:
step 302a, adjust the impedance tunable element according to a first impedance adjustment direction, wherein the first impedance adjustment direction is clockwise or counterclockwise along the middle resistance circle of the smith chart.
In one possible implementation, a default impedance adjustment direction, i.e., a first impedance adjustment direction, is preset in the electronic device, and the first impedance adjustment direction is clockwise or counterclockwise along a resistance circle in a smith chart. When the current value of the output current is larger than the first current threshold value, and the impedance adjustable component is determined to be required to be adjusted, the electronic equipment firstly controls the impedance adjustable component to adjust the impedance state according to the first impedance adjusting direction, and determines the target impedance adjusting direction according to the change situation of the current value fed back by the current monitoring component.
In step 302b, in response to the current value of the output current decreasing, the first impedance adjustment direction is determined to be the target impedance adjustment direction.
As can be seen from fig. 4, if the current value of the output current is decreased after the impedance-adjustable component is adjusted according to the first impedance adjustment direction, the first impedance adjustment direction is the direction that can reach the lowest point of the equal resistance circle most quickly, and therefore the first impedance adjustment direction is the target impedance adjustment direction.
Illustratively, taking an equal resistance circle with a resistance value of 1 as an example, two intersection points exist between the current value 549mA and the equal resistance circle, and are respectively located at the upper left part and the upper right part of the equal resistance circle, and if the impedance of the current power amplifier corresponds to the upper right position, the clockwise direction along the equal resistance circle is the impedance adjusting direction capable of reaching the lowest point of the equal resistance circle most quickly. When the first impedance adjusting direction is clockwise along the equal resistance circle, the current value of the output current can be monitored to be reduced.
Step 302c, in response to the current value of the output current increasing, determining that the second impedance adjustment direction is the target impedance adjustment direction, the second impedance adjustment direction being opposite to the first impedance adjustment direction.
As shown in fig. 4, if the current value of the output current increases, it means that the impedance moves to a position away from the lowest point of the equal resistance circle, and although the impedance can move to the lowest point of the equal resistance circle by being adjusted in the same direction all the time, if the adjustment is continued in the same direction, the current value increases and then decreases, and extra power consumption is caused in the middle process.
Therefore, when the current value of the output current increases, it is determined that the first impedance adjustment direction is not appropriate for adjusting the impedance, and it is determined that the second impedance adjustment direction is the target impedance adjustment direction. Taking the example in step 302b as an example, if the impedance of the present power amplifier corresponds to the upper right position and the first impedance adjustment direction is the counterclockwise direction along the equal resistance circle, the current value of the output current increases, and the electronic device determines the clockwise direction along the equal resistance circle as the target impedance adjustment direction.
When the target impedance adjusting direction is determined, the electronic equipment adjusts the impedance adjustable component in a certain range according to the direction, so that the current value is gradually reduced. Since the different impedance states correspond to different ways of reducing the impedance value, in one possible embodiment, step 303 comprises step 303a or step 303 b:
step 303a, in response to the target impedance adjustment direction being clockwise, adjusting the impedance-adjustable component by at least one of increasing the series inductance, decreasing the parallel inductance, increasing the parallel capacitance, and decreasing the series capacitance.
In the smith chart, an inductive area is above a horizontal line with a reactance of 0, a capacitive area is below the horizontal line, the series inductor will cause the impedance to move clockwise along the equal resistance circle, the series capacitor will cause the impedance to move counterclockwise along the equal resistance circle, the parallel inductor will cause the impedance to move counterclockwise along the equal conductance circle, and the parallel capacitor will cause the impedance to move clockwise along the equal conductance circle. For example, when the impedance corresponds to the position on the upper right of the equal resistance circle in smith artwork, the impedance can be moved clockwise by increasing the series inductance, and when the series inductance is wirelessly increased, the impedance can only approach the position of the right end point, so that when the series inductance is increased to a certain inductance value, the electronic device can move the impedance to the position on the lower right of the equal resistance circle by increasing the parallel capacitance.
In one possible embodiment, the impedance-tunable component is composed of a pure inductor circuit including a tunable inductor, or the impedance-tunable component is a pure capacitor circuit including a tunable capacitor, or a combination circuit including a tunable inductor and a tunable capacitor, so that when the target impedance-tuning direction is clockwise, the electronic device can tune the impedance-tunable component by at least one of increasing the series inductor, decreasing the parallel inductor, increasing the parallel capacitor, and decreasing the series capacitor.
Fig. 5 shows an equivalent circuit diagram of an impedance-adjustable component 501, when a switch 1 is connected to a lower conductor, that is, the impedance-adjustable component 501 is added to an output terminal of a power amplifier, at this time, the impedance-adjustable component 501 includes an adjustable inductor L1 and an adjustable capacitor C1, when a parallel inductor needs to be added, the electronic device control switch 2 is closed, that is, the parallel inductor L2 can be added, and when a parallel capacitor needs to be added, the electronic device control switch 3 is closed, that is, the parallel inductor C2 can be added.
And 303b, responding to the anticlockwise direction of the impedance adjusting direction, and adjusting the impedance adjustable component by at least one of reducing the series inductance, increasing the parallel inductance, reducing the parallel capacitance and increasing the series capacitance.
Because, series inductance will cause impedance to move along the equal resistance circle clockwise, series capacitance will cause impedance to move along the equal resistance circle counter-clockwise, parallel inductance will cause impedance to move along the equal conductance circle counter-clockwise, parallel capacitance will cause impedance to move along the equal conductance circle clockwise, consequently, when impedance adjustment direction is counter-clockwise, electronic equipment can be through reducing the series inductance that connects, increase the inductance that connects in parallel, reduce the adjustable subassembly of impedance and increase at least one of series capacitance's mode adjustment. For example, when the impedance corresponds to the position above the left of the equal resistance circle in smith artwork, the impedance can be moved counterclockwise by increasing the parallel inductor, and since the inductor decreases to 0, the impedance can only approach the position of the left end point, when the inductor decreases to a certain inductance value, the electronic device can move the impedance to the position below the left of the equal resistance circle by increasing the series capacitor.
And 304, acquiring the output current of the power amplifier after the ith impedance adjustment, wherein i is a positive integer.
For a specific implementation of step 304, reference may be made to step 203 described above, and details of this embodiment are not described herein again.
In a possible embodiment, the positions of the lowest points corresponding to different equal resistance circles are different, and the impedance states are also different, and the current value is limited by each operating frequency band of the radio frequency circuit, so that the current value of the output current cannot be necessarily reduced to the current value corresponding to the lowest point of the equal resistance circle. In a possible implementation manner, a developer sets the second current threshold in advance according to the working frequency band of the radio frequency circuit, so that the current value of the output current can always meet the requirements of each working frequency band. After the electronic device executes step 304, the electronic device continues to execute step 305 or step 306.
The developer sets the second current threshold value in advance according to the working frequency band of the radio frequency circuit, so that the current value of the output current can always meet the requirements of each working frequency band, and therefore if the output current is reduced to the second current threshold value, even if the impedance state of the impedance-adjustable component does not reach the lowest point in the equal resistance circle, the current value of the output current can still be reduced continuously, and the electronic device also needs to control the impedance-adjustable component to stop adjusting so as to avoid influencing the normal work of the radio frequency circuit.
Illustratively, the second current threshold is 300mA, and after the ith adjustment, the current value of the output current is reduced from 310mA to 290mA, and then the adjustment of the impedance adjustable component is stopped.
Optionally, when the current value of the output current is smaller than the second current threshold, the electronic device stops adjusting the impedance-adjustable component; or, in order to avoid that the current value is automatically reduced in the changing process, so that the working current of the radio frequency circuit is reduced to be smaller than the minimum value of the current range of the current working frequency band, the radio frequency of the electronic equipment cannot normally transmit and receive signals, when the current value of the output current is smaller than the second current threshold value, the electronic equipment cancels the ith adjustment, namely, the adjustable impedance component is adjusted to be restored to the impedance state after the ith-1 adjustment.
For example, the second current threshold is 300mA, and after the ith adjustment, the current value of the output current is reduced from 310mA to 290mA, and then the electronic device controls the adjustable impedance component to recover to the impedance state when the current value of the output current is 310 mA.
In a possible implementation manner, the electronic device may automatically determine the second current threshold according to an operating frequency band of the radio frequency circuit, and the control method of the radio frequency circuit further includes the following steps:
step one, acquiring the output current lower limit value of each working frequency band of the radio frequency circuit.
In order to determine a suitable second current threshold, the electronic device obtains the output current lower limit value of each working frequency band of the radio frequency circuit on the basis of reducing the current value of the output current as much as possible and meeting the requirements of each working frequency band of the radio frequency circuit.
And step two, determining the maximum value in the lower limit values of the output current as a second current threshold value.
Because the requirements of each working frequency band of the radio frequency circuit need to be met, the electronic equipment determines the maximum value of the lower limit value of the output current as the second current threshold value, so that the output current after impedance adjustment can still meet the requirements of the radio frequency circuit, and the normal work of the radio frequency circuit is prevented from being influenced.
For example, the output current lower limit values of the radio frequency circuits in the respective operating frequency bands are 300mA, 320mA, 340mA and 350mA, respectively, and then the electronic device determines that the second current threshold is 350 mA.
In another possible implementation manner, in order to further ensure that the output current after the impedance adjustment can still meet the requirement of the radio frequency circuit, the electronic device increases a preset current value as the second current threshold value on the basis of the maximum value of the lower limit values of the output current, for example, in the above example, the electronic device determines that the maximum value of the lower limit values of the output current is 350mA, and then increases 10mA on the basis, and takes 360mA as the second current threshold value.
And step 306, in response to the current value of the output current being larger than the current value of the output current after the i-1 th impedance adjustment, cancelling the i-th impedance adjustment and stopping adjusting the impedance adjustable component.
If the current value corresponding to the lowest point in the equal resistance circle can meet the working requirement of the radio frequency circuit under the current working frequency band, the electronic equipment adjusts the impedance adjustable component to move to the lowest point of the equal resistance circle. When the current value of the output current is larger than the current value of the output current after the ith impedance adjustment, the current value of the output current after the ith impedance adjustment exceeds the current value of the lowest point position of the equal resistance circle, the electronic equipment cancels the ith impedance adjustment and stops adjusting the impedance adjustable component, namely, the impedance adjustable component is adjusted to be restored to the impedance state after the ith-1 adjustment.
For example, after the ith adjustment, the current value of the output current is increased from 310mA to 320mA, and the electronic device controls the adjustable impedance component to be adjusted to recover to the impedance state when the current value of the output current is 310 mA.
Or, since it cannot be determined which of the ith impedance adjustment and the (i-1) th impedance adjustment is closer to the current value of the lowest point of the equal resistance circle, the electronic device directly stops adjusting the impedance adjustable component when the current value of the output current is greater than the current value of the output current after the ith-1 th impedance adjustment.
In a possible implementation manner, after a round of adjustment, the electronic device stores impedance adjustment data of the impedance adjustable component and an operating frequency band of the radio frequency circuit in an associated manner, so that the impedance adjustment data of the impedance adjustable component when the power consumption of the electronic device is low in a current operating state is recorded, and the electronic device can rapidly adjust the impedance adjustable component according to the data when a current value of an output current of the power amplifier exceeds a first current threshold value again in the operating frequency band.
And 308, in response to the current value of the output current being larger than the first current threshold, determining target impedance adjustment data according to the current working frequency band of the radio frequency circuit.
And when the current value of the output current is larger than the first current threshold value, the electronic equipment inquires the stored related data according to the current working frequency band of the radio frequency circuit. If the impedance adjustment data corresponding to the current working frequency band exists, the impedance adjustment data is determined as target impedance adjustment data, and if the impedance adjustment data corresponding to the current working frequency band does not exist, steps 302 to 307 are executed to adjust the impedance adjustable component and store related data.
Optionally, the electronic device directly adjusts the impedance state of the impedance-adjustable component to an impedance state corresponding to the target impedance adjustment data; or, the electronic device first adjusts the impedance state of the impedance-adjustable component to the impedance state corresponding to the target impedance adjustment data, so that the current value of the output current is rapidly reduced, and then continues to execute steps 302 to 306, so that the current value of the output current is reduced to a lower current value under the condition that the radio frequency circuit is guaranteed to be in demand. The embodiments of the present application do not limit this.
In the embodiment of the application, after the impedance-adjustable component is adjusted according to the first impedance adjustment direction, the direction which can be adjusted to meet the adjustment end condition most quickly, namely the target impedance adjustment direction, is determined by obtaining the current value change condition of the output current, so that the adjustment efficiency of the impedance-adjustable component is improved; determining whether the adjustment ending condition is met or not according to the second current threshold value or the current value change conditions of the output current after the ith-1 th impedance adjustment and the ith impedance adjustment, and reducing the working current of the radio frequency circuit as much as possible when the requirement of the current working frequency band of the radio frequency circuit is met, thereby reducing the power consumption of the electronic equipment; by storing the impedance adjustment data and the working frequency band in an associated manner, the electronic equipment can conveniently and rapidly adjust the impedance adjustable circuit according to the impedance adjustment data, the adjustment efficiency is further improved, and the power consumption of the electronic equipment is reduced.
Referring to fig. 6 on the basis of fig. 2, in a possible implementation manner, the step 202 further includes a step 202a, and the method for controlling the rf circuit further includes a step 205:
in step 202a, in response to the current value of the output current being greater than the first current threshold and the current value increasing within a predetermined time period, the impedance-adjustable component is adjusted.
For example, when a user uses the electronic device to make a call, if a gesture of holding the electronic device by the user at a certain time causes the antenna with higher efficiency to be shielded, the current value of the output current of the power amplifier may be increased, that is, the working current of the radio frequency circuit is increased. In one possible embodiment, therefore, the electronic device will adjust the impedance-adjustable component only when the current value of the output current is greater than the first current threshold and the current value increases within a predetermined time period, otherwise step 205 is executed.
Step 205, in response to that the current value of the output current is greater than the first current threshold and the current value decreases within a predetermined time period, maintaining the impedance state of the impedance-adjustable component.
When the current value of the output current is greater than the first current threshold value and the current value is reduced within the preset time length, the working current of the radio frequency circuit is reduced under the current working state, so that the impedance state of the impedance adjustable component does not need to be adjusted by electronic equipment, and extra power consumption is avoided.
In another possible implementation manner, in the process of adjusting the impedance-adjustable component by the electronic device, if the current value of the output current is monitored to be reduced before the impedance-adjustable component is adjusted for the ith time, the electronic device stops adjusting the impedance-adjustable component, so that extra power consumption caused by adjusting the impedance-adjustable component when the working current of the radio frequency circuit can be automatically reduced in the current working state is avoided.
In the embodiment of the application, when the current value of the output current is greater than the first current threshold, the current value is further judged to be reduced or increased within the preset time period, so that the impedance state of the impedance adjustable component is maintained when the current value is reduced within the preset time period, and extra power consumption is avoided.
In connection with the above embodiments, in an illustrative example, the control flow of the rf circuit is shown in fig. 7.
Step 701, monitoring the output current of the power amplifier.
At step 702, it is determined whether the current value of the output current is greater than a first current threshold. If so, go to step 704, otherwise go to step 703.
Step 703, maintaining the impedance state of the impedance-tunable component.
In step 704, it is determined whether the current value of the output current is increased. If yes, go to step 705, otherwise go to step 703.
Step 705, adjusting the impedance tunable assembly.
And step 706, stopping adjusting the impedance adjustable component when the current value of the output current meets the adjustment ending condition.
Fig. 8 is a block diagram of a control apparatus of a radio frequency circuit according to an exemplary embodiment of the present application, where the apparatus includes:
a first obtaining module 801, configured to obtain an output current of a power amplifier in a radio frequency circuit;
a first adjusting module 802, configured to adjust an impedance-adjustable component in response to a current value of an output current being greater than a first current threshold, where an input end of the impedance-adjustable component is connected to an output end of the power amplifier, and the impedance-adjustable component is configured to adjust load pulling of the power amplifier;
a second obtaining module 803, configured to obtain an output current of the power amplifier after the ith impedance adjustment, where i is a positive integer;
a first control module 804, configured to stop adjusting the impedance-adjustable component in response to a current value of the output current meeting an adjustment end condition, where the current value is smaller than the first current threshold when the adjustment end condition is met.
Optionally, the first adjusting module 802 includes:
a first determination unit configured to determine a target impedance adjustment direction, which is a clockwise direction or a counterclockwise direction along an intermediate resistance circle in a smith chart;
and the first adjusting unit is used for adjusting the impedance adjustable component according to the target impedance adjusting direction.
Optionally, the first determining unit is further configured to:
adjusting the impedance adjustable component according to a first impedance adjusting direction, wherein the first impedance adjusting direction is along a clockwise direction or a counterclockwise direction of an intermediate resistance circle in a Smith chart;
determining the first impedance adjustment direction as the target impedance adjustment direction in response to a decrease in a current value of the output current;
determining a second impedance adjustment direction as the target impedance adjustment direction in response to a current value of the output current increasing, the second impedance adjustment direction being opposite to the first impedance adjustment direction.
Optionally, the first adjusting unit is further configured to:
adjusting the impedance-adjustable component by at least one of increasing a series inductance, decreasing a parallel inductance, increasing a parallel capacitance, and decreasing a series capacitance in response to the target impedance adjustment direction being clockwise;
or the like, or, alternatively,
adjusting the impedance adjustable component by at least one of decreasing the series inductance, increasing the parallel inductance, decreasing the parallel capacitance, and increasing the series capacitance in response to the impedance adjustment direction being counterclockwise.
Optionally, the first control module 804 includes:
the first control unit is used for responding to the current value of the output current being smaller than a second current threshold value, and stopping adjusting the impedance adjustable component, wherein the second current threshold value is smaller than the first current threshold value;
or the like, or, alternatively,
and the second control unit is used for canceling the ith impedance adjustment and stopping adjusting the impedance adjustable component in response to the fact that the current value of the output current is larger than the current value of the output current after the ith-1 st impedance adjustment.
Optionally, the apparatus further comprises:
the third acquisition module is used for acquiring the lower limit value of the output current of each working frequency band of the radio frequency circuit;
the first determining module is used for determining the maximum value in the lower limit values of the output current as the second current threshold value.
Optionally, the apparatus further comprises:
the storage module is used for performing associated storage on the impedance adjustment data of the impedance adjustable component and the working frequency band of the radio frequency circuit;
the second determining module is used for responding to the condition that the current value of the output current is larger than the first current threshold value, and determining target impedance adjusting data according to the current working frequency band of the radio frequency circuit;
and the second adjusting module is used for adjusting the impedance adjustable component according to the target impedance adjusting data.
Optionally, the first adjusting module includes:
the second adjusting unit is used for responding to the condition that the current value of the output current is larger than the first current threshold value and is increased within a preset time length, and adjusting the impedance adjustable component;
the device further comprises:
and the second control module is used for responding that the current value of the output current is larger than the first current threshold value and is reduced within the preset time length, and maintaining the impedance state of the impedance adjustable component.
In summary, in the embodiment of the present application, by monitoring the output current of the power amplifier in the radio frequency circuit, and when the current value is greater than the first current threshold, the impedance-adjustable component is controlled to adjust, and then the load traction of the power amplifier is adjusted, so that the working current of the radio frequency circuit is reduced to meet the adjustment end condition, thereby reducing the power supply current value transmitted to the radio frequency circuit by the battery of the electronic device, reducing the radio frequency power consumption of the electronic device, and improving the cruising ability and the service life of the battery.
Referring to fig. 9, a block diagram of an electronic device according to an exemplary embodiment of the present application is shown. The electronic device 900 may be a smartphone, a tablet computer, a wearable device, or the like. The electronic device 900 in the present application may include one or more of the following components: a wireless communication module 910, a memory 920 and a processor 930, wherein the wireless communication module 910 includes a radio frequency circuit 911, an impedance tunable component 912 and an antenna component 913.
The output of the power amplifier in the radio frequency circuit 911 is connected to the input of an impedance tunable component 912, and the output of the impedance tunable component 912 is connected to the input of an antenna component 913. The radio frequency circuit 911 is a circuit for implementing wireless communication in the electronic device 900; the impedance tunable component 912 is used for adjusting the load pulling of the power amplifier in the rf circuit 911; antenna assembly 913 is the component of electronic device 900 that is used to receive and transmit wireless signals.
The Memory 920 may include a Random Access Memory (RAM) or a Read-Only Memory (ROM). Optionally, the memory 920 includes a non-transitory computer-readable medium. The memory 920 may be used to store instructions, programs, code sets, or instruction sets. The memory 920 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing various method embodiments described below, and the like; the stored data area may store data (e.g., audio data, a phonebook) created according to the use of the electronic device 900, and the like.
In this embodiment, the electronic device 900 further includes a driving component, and the driving component is configured to drive the flexible display to expand or contract. Optionally, the electronic device 900 further includes a driving mechanism, and the driving mechanism is configured to drive the first housing and the second housing to move relatively.
In addition, those skilled in the art will appreciate that the configuration of the electronic device 900 illustrated in the above-described figures does not constitute a limitation of the electronic device 900, and that the electronic device may include more or fewer components than illustrated, or some components may be combined, or a different arrangement of components. For example, the electronic device 900 further includes a radio frequency circuit, a shooting component, a sensor, an audio circuit, a Wireless Fidelity (WiFi) component, a power supply, a bluetooth component, and other components, which are not described herein again.
The embodiment of the present application further provides a computer-readable storage medium, where at least one instruction is stored, and the at least one instruction is loaded and executed by a processor to implement the control method of the radio frequency circuit according to the above various embodiments.
According to an aspect of the application, a computer program product or computer program is provided, comprising computer instructions, the computer instructions being stored in a computer readable storage medium. The processor of the electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device executes the control method of the radio frequency circuit provided in the various alternative implementations of the above-mentioned aspects.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable storage medium. Computer-readable storage media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method of controlling a radio frequency circuit, the method comprising:
acquiring output current of a power amplifier in a radio frequency circuit;
responding to the current value of the output current being larger than a first current threshold value, and adjusting an impedance-adjustable component, wherein an input end of the impedance-adjustable component is connected with an output end of the power amplifier, and the impedance-adjustable component is used for adjusting load traction of the power amplifier;
obtaining the output current of the power amplifier after the ith impedance adjustment, wherein i is a positive integer;
and stopping adjusting the impedance adjustable component in response to the current value of the output current meeting an adjustment ending condition, wherein the current value is smaller than the first current threshold when the adjustment ending condition is met.
2. The method of claim 1, wherein adjusting the impedance tunable assembly comprises:
determining a target impedance adjustment direction, wherein the target impedance adjustment direction is a clockwise direction or a counterclockwise direction along a medium resistance circle in a Smith chart;
and adjusting the impedance adjustable component according to the target impedance adjusting direction.
3. The method of claim 2, wherein determining a target impedance adjustment direction comprises:
adjusting the impedance adjustable component according to a first impedance adjusting direction, wherein the first impedance adjusting direction is along a clockwise direction or a counterclockwise direction of an intermediate resistance circle in a Smith chart;
determining the first impedance adjustment direction as the target impedance adjustment direction in response to a decrease in a current value of the output current;
determining a second impedance adjustment direction as the target impedance adjustment direction in response to a current value of the output current increasing, the second impedance adjustment direction being opposite to the first impedance adjustment direction.
4. The method of claim 2, wherein said adjusting the impedance-tunable component according to the target impedance-tuning direction comprises:
adjusting the impedance-adjustable component by at least one of increasing a series inductance, decreasing a parallel inductance, increasing a parallel capacitance, and decreasing a series capacitance in response to the target impedance adjustment direction being clockwise;
or the like, or, alternatively,
adjusting the impedance adjustable component by at least one of decreasing the series inductance, increasing the parallel inductance, decreasing the parallel capacitance, and increasing the series capacitance in response to the impedance adjustment direction being counterclockwise.
5. The method of any of claims 1 to 4, wherein stopping adjusting the impedance-tunable component in response to the current value of the output current satisfying an end-of-adjustment condition comprises:
stopping adjusting the impedance-adjustable component in response to a current value of the output current being less than a second current threshold, the second current threshold being less than the first current threshold;
or the like, or, alternatively,
and in response to the current value of the output current being larger than the current value of the output current after the ith-1 th impedance adjustment, cancelling the ith impedance adjustment and stopping adjusting the impedance adjustable component.
6. The method of claim 5, further comprising:
acquiring the output current lower limit value of each working frequency band of the radio frequency circuit;
determining a maximum value of the output current lower limit values as the second current threshold value.
7. The method of any of claims 1 to 4, wherein after stopping adjusting the impedance-tunable component, the method comprises:
performing associated storage on impedance adjustment data of the impedance adjustable component and the working frequency band of the radio frequency circuit;
determining target impedance adjustment data according to the current working frequency band of the radio frequency circuit in response to the current value of the output current being greater than the first current threshold;
and adjusting the impedance adjustable component according to the target impedance adjustment data.
8. The method of any of claims 1 to 4, wherein adjusting the impedance-tunable-component in response to the current value of the output current being greater than the first current threshold comprises:
adjusting the impedance adjustable component in response to the current value of the output current being greater than the first current threshold and the current value rising within a predetermined time period;
after the obtaining of the output current of the power amplifier in the radio frequency circuit, the method further includes:
and maintaining the impedance state of the impedance adjustable component in response to the current value of the output current being larger than the first current threshold value and the current value decreasing within the preset time length.
9. A control device for a radio frequency circuit, the device comprising:
the first acquisition module is used for acquiring the output current of a power amplifier in the radio frequency circuit;
the first adjusting module is used for adjusting an impedance adjustable component in response to the current value of the output current being greater than a first current threshold, wherein the input end of the impedance adjustable component is connected with the output end of the power amplifier, and the impedance adjustable component is used for adjusting load traction of the power amplifier;
the second acquisition module is used for acquiring the output current of the power amplifier after the ith impedance adjustment, wherein i is a positive integer;
the first control module is used for responding to the condition that the current value of the output current meets the adjustment ending condition, and stopping adjusting the impedance adjustable component, wherein the current value is smaller than the first current threshold when the adjustment ending condition is met.
10. An electronic device comprising a wireless communication module, a processor, and a memory, the wireless communication module comprising a radio frequency circuit, an impedance-tunable component, and an antenna component; the output end of a power amplifier in the radio frequency circuit is connected with the input end of the impedance adjustable component, and the output end of the impedance adjustable component is connected with the input end of the antenna component;
the memory has stored therein at least one instruction, at least one program, a set of codes or a set of instructions that are loaded and executed by the processor to implement the method of controlling a radio frequency circuit according to any one of claims 1 to 8.
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