CN111061173A - Power amplifier supply voltage control method and device and wireless equipment - Google Patents
Power amplifier supply voltage control method and device and wireless equipment Download PDFInfo
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- CN111061173A CN111061173A CN201911408828.XA CN201911408828A CN111061173A CN 111061173 A CN111061173 A CN 111061173A CN 201911408828 A CN201911408828 A CN 201911408828A CN 111061173 A CN111061173 A CN 111061173A
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- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
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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
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Abstract
The invention discloses a power amplifier supply voltage control method, which comprises the following steps: acquiring a preset transmitting power requirement which needs to be met by the wireless equipment where the power amplifier is located; and switching the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state. The invention also discloses a power amplifier supply voltage control device, a power amplifier and wireless equipment. By adopting the embodiment of the invention, the wireless equipment can adapt to the transmitting power requirements of different countries or different channels, and simultaneously, the performance of the wireless equipment can be improved and the cost can be reduced.
Description
Technical Field
The present invention relates to the field of wireless devices, and in particular, to a power amplifier supply voltage control method and apparatus, a power amplifier, and a wireless device.
Background
When the wireless device is delivered to different countries, the wireless device needs to meet the requirements of different transmission powers to deliver the goods, and the transmission power requirements of different countries or different channels of the same country for the wireless device are different, for example, when the transmission power of the wireless device meets the certification regulations set by the local country, the delivery is allowed. For different countries or different channels of the same country, in order to promote the wireless device products to be marketed in multiple countries as soon as possible, Power Amplifiers (PAs) in the wireless devices generally adopt the same hardware circuit design, and meanwhile, the smaller value of the authentication Power and the hardware Power is taken as the final transmission Power. The same applies to the supply voltage of the PA, as is the hardware circuitry. Within a certain power supply voltage range, the higher the power supply voltage of the PA is, the better the linearity is and the lower the efficiency is; the lower the supply voltage of the PA, the worse the linearity and the higher the efficiency. The actual transmission power of the channel with lower authentication power is lower, the requirement on the linearity of the PA is not high, and the PA efficiency is low due to the fact that the same power supply voltage is adopted for the wireless equipment with high authentication power, so that the power consumption waste of the wireless equipment product with low authentication power is caused, and the heat dissipation cost and the power adapter cost are increased. In dual-frequency and triple-frequency wireless equipment, sometimes, the total power consumption of wireless equipment products is fixed due to heat dissipation and power adapter cost, so that one frequency band in the dual-frequency and triple-frequency wireless equipment has high power and one frequency band has low power, and in addition, different countries have different requirements on the transmitting power of different frequency bands, so that the performance cost of the wireless equipment exported to some countries is not optimal.
Disclosure of Invention
The embodiment of the invention aims to provide a power amplifier supply voltage control method, a power amplifier supply voltage control device, a power amplifier and wireless equipment, so that the wireless equipment can adapt to the transmission power requirements of different countries or different channels, and meanwhile, the performance of the wireless equipment can be improved and the cost can be reduced.
In order to achieve the above object, an embodiment of the present invention provides a method for controlling a supply voltage of a power amplifier, including:
acquiring the working frequency of a power amplifier;
acquiring a preset transmitting power requirement which needs to be met by the wireless equipment where the power amplifier is located;
and switching the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state.
Compared with the prior art, the power amplifier power supply voltage control method disclosed by the embodiment of the invention comprises the steps of firstly, obtaining the working frequency of the power amplifier to determine whether the power amplifier works at the working frequency of 2.4GHz or 5 GHz; then, acquiring the transmission power requirement which needs to be met by the wireless equipment where the power amplifier is located; and finally, switching the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state, and the wireless equipment can meet different transmission power requirements. The power amplifier power supply voltage control method disclosed by the embodiment of the invention enables the wireless equipment to be self-adaptive to the emission power requirements of different countries or different channels, and simultaneously can improve the performance of the wireless equipment and reduce the cost.
As a modification of the above scheme, the operating state includes a high-impedance state and a low-level state.
As an improvement of the above scheme, the transmission power requirement includes a correspondence between a preset authentication condition, an authentication power, and an operating frequency of the power amplifier; the preset authentication condition includes at least one of a channel and a country code, the country code is a code of a country to which the wireless device is applicable, and the authentication power is a power to which the wireless device is applicable in a current country.
In order to achieve the above object, an embodiment of the present invention further provides a power amplifier supply voltage control apparatus, including:
the data acquisition module is used for acquiring the working frequency of the power amplifier; the power amplifier is also used for acquiring the preset transmission power requirement which needs to be met by the wireless equipment where the power amplifier is located;
and the working state switching module is used for switching the working state according to the working frequency and the transmission power requirement so that the power supply system outputs corresponding power amplifier supply voltage according to the switched working state.
Compared with the prior art, the power amplifier supply voltage control device disclosed by the embodiment of the invention comprises the following steps that firstly, the data acquisition module acquires the working frequency of the power amplifier so as to determine whether the power amplifier works at the working frequency of 2.4GHz or 5 GHz; then, a data acquisition module acquires the transmission power requirement which needs to be met by the wireless equipment where the power amplifier is located; and finally, the working state switching module switches the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs corresponding power amplifier supply voltage according to the switched working state, and the wireless equipment meets different transmission power requirements. The power amplifier supply voltage control device disclosed by the embodiment of the invention enables the wireless equipment to be self-adaptive to the transmission power requirements of different countries or different channels, and simultaneously can improve the performance of the wireless equipment and reduce the cost.
As a modification of the above scheme, the operating state includes a high-impedance state and a low-level state.
As an improvement of the above scheme, the transmission power requirement includes a correspondence between a preset authentication condition, an authentication power, and an operating frequency of the power amplifier; the preset authentication condition includes at least one of a channel and a country code, the country code is a code of a country to which the wireless device is applicable, and the authentication power is a power to which the wireless device is applicable in a current country.
In order to achieve the above object, an embodiment of the present invention further provides a power amplifier, including: the power supply control circuit comprises a power supply control chip, a power supply output end, a first resistor, a second resistor, a third resistor and a controller; wherein the content of the first and second substances,
the first end of the first resistor is connected with the power supply output end, and the second end of the first resistor is connected with a feedback pin of the power supply control chip;
the first end of the second resistor is connected with a feedback pin of the power control chip, and the second end of the second resistor is grounded;
the first end of the third resistor is connected with a feedback pin of the power control chip, and the second end of the third resistor is connected with the controller;
the controller is a power amplifier supply voltage control device as described in any of the above embodiments.
Compared with the prior art, the power amplifier disclosed by the embodiment of the invention has the advantages that firstly, the controller acquires the working frequency of the power amplifier to determine whether the power amplifier works at the working frequency of 2.4GHz or 5 GHz; then, the controller acquires the transmission power requirement which needs to be met by the wireless equipment where the power amplifier is located; and finally, the controller switches the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state, and the wireless equipment meets different transmission power requirements. The power amplifier disclosed by the embodiment of the invention enables the wireless equipment to be self-adaptive to the transmission power requirements of different countries or different channels, and simultaneously can improve the performance of the wireless equipment and reduce the cost.
As an improvement of the scheme, the power supply control chip is a DC-DC control chip.
As an improvement of the above scheme, the number of the third resistors and the number of the controllers are at least two, and the third resistors correspond to the controllers one to one; wherein the content of the first and second substances,
the first end of each third resistor is connected with a feedback pin of the power control chip, and the second end of each third resistor is connected with the corresponding controller.
To achieve the above object, an embodiment of the present invention further provides a wireless device, including the power amplifier according to any of the above embodiments.
Drawings
Fig. 1 is a flowchart of a power amplifier supply voltage control method according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a power amplifier provided by an embodiment of the invention;
FIG. 3 is an equivalent circuit diagram of the power amplifier when the controller is operating in a high impedance state;
fig. 4 is an equivalent circuit diagram of the power amplifier when the controller operates in a low state;
fig. 5 is a schematic structural diagram of a power amplifier supply voltage control apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a power amplifier according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a power amplifier supply voltage control method according to an embodiment of the present invention; the power amplifier supply voltage control method comprises the following steps:
s1, acquiring the working frequency of the power amplifier;
s2, acquiring a preset transmission power requirement which needs to be met by the wireless equipment where the power amplifier is located;
and S3, switching the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state.
It should be noted that the power amplifier supply voltage control method according to the embodiment of the present invention may be implemented by a controller installed on a wireless device, and referring to fig. 2, the power amplifier supply system includes a power Output terminal OUT, a power control chip U, a first resistor R1, a second resistor R2, a third resistor R3, and a GPIO (General Purpose Input/Output) port.
The controller is connected with the GPIO port, is a processor and is internally provided with algorithms of steps S1-S3. Firstly, the controller acquires the working frequency of the power amplifier; illustratively, the operating frequencies of the power amplifier include 2.4GHz and 5 GHz. Then, the controller obtains the transmission power requirement that the wireless device where the power amplifier is located needs to meet, different countries or different channels in the same country have different transmission power requirements on the wireless device, and the controller obtains the transmission power requirement that needs to be met currently. And finally, switching the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state.
Illustratively, the transmit power requirements may be required to meet current national certification regulations, such as allowing shipment, i.e., allowing use in the current country, when the transmit power of the wireless device meets the local national certification regulations. In the embodiment of the present invention, the transmission power requirement needs to meet the current national certification regulations, but in other embodiments of the present invention, the transmission power requirement may meet other conditions, which are all within the protection scope of the present invention.
Preferably, the working state includes a high impedance state, a high level state and a low level state. The transmission power requirement comprises a corresponding relation of a preset authentication condition, authentication power and the working frequency of the power amplifier; the preset authentication condition includes at least one of a channel and a country code, the country code is a code of a country to which the wireless device is applicable, and the authentication power is a power to which the wireless device is applicable in a current country, that is, an authentication power specified in the authentication regulation.
And a third resistor R3 is connected in series on a feedback link of a power supply control chip U for supplying power to the PA and is connected to the GPIO port. The GPIO port receives three states of high level, low level and high resistance of the controller, and the power output end OUT corresponding to the PA can take 3 different values. The country code/channel is switched, and the GPIO is set to be in different states, so that the power supply voltage VOUT of the PA is different when the country code is different, and the purpose that the performance of the PA is adaptive to different country codes or different channels is achieved.
And when the transmission power requirement is acquired, adjusting the power supply voltage of the power amplifier according to the working frequency of the current power amplifier, the country code/channel of the current country and the corresponding authentication power. For example, the transmit power requirement satisfies: the country code is EU (Europe), the authentication power corresponding to the working frequency of 2.4GHz is low, and the authentication power corresponding to the working frequency of 5GHz is high. When the working frequency of the power amplifier is acquired to be 2.4GHz, the corresponding authentication power is low, the power supply voltage output by the power amplifier is low and is 3.3V, and the controller needs to work in a high-impedance state in order to meet the requirement that the power supply voltage is kept at 3.3V.
In a preferred embodiment, when the authentication condition is a country code, the wireless device requires a correspondence of the country code, an authentication power, and an operating frequency of the power amplifier. Generally, European (EU) has lower 2.4GHz certification power than Japanese (JP), EU 5G Band3 (5490-5710 MHz) has higher certification power than JP 5G W56Band (5490-5710 MHz), namely, EU 2.4GHz certification power is low, and 5GHz certification power is high; JP 2.4GHz authentication power is high, and 5GHz authentication power is low. When the software is switched to the EU country code, under the working frequency of 2.4GHz, the controller works in a high-impedance state, the GPIO is in a high-impedance state, VOUT is 3.3V, and the power meter is switched to the EU country power meter, namely 2.4G power is low, and 5G power is high; at an operating frequency of 5GHz, the controller operates in a low state, GPIO is pulled low, and VOUT is 5.0V. When the software is switched to the JP country code, under the working frequency of 2.4GHz, the controller works in a low level state, GPIO is pulled down, VOUT is 5.0V, and the power meter is switched to the JP country power meter, namely 2.4G power is high and 5G power is low; under the working frequency of 5GHz, the controller works in a high-impedance state, GPIO high-impedance state, and VOUT is 3.3V. Therefore, the AP can realize the optimal performance under the state codes of EU and JP under the condition of certain power consumption, and the heat dissipation cost and the power adapter cost are the lowest as possible.
In another preferred embodiment, when the authentication condition is a channel, the wireless device needs to satisfy a correspondence relationship between the channel, the authentication power, and the operating frequency of the power amplifier. The U.S. certification (FCC) generally shows that the power of CH1, CH2, CH10 and CH11 channels and the power of 5GHz Band1 (5170-5250 MHz) channels are lower in 2.4GHz, and the power of other 2.4GHz channels and the power of 5GHz Band4 (5735-5835 MHz) channels are higher. When 2.4GHz is switched to channels CH1, CH2, CH10 and CH11, power is reduced, GPIO is pulled down, VOUT is 3.3V, PA efficiency is improved, temperature is reduced, and service life is prolonged; when 2.4GHz switches to other channels, power is improved, GPIO is pulled high, VOUT is 5.0V, PA linearity is improved, and transmitting signal quality is guaranteed. When 5GHz is switched to a Band1 channel, power is reduced, GPIO is pulled low, VOU2 is 3.3V, PA efficiency is improved, temperature is reduced, and service life of a device is prolonged; when 5GHz is switched to a Band4 channel, the power is increased, GPIO is pulled high, VOUT is 5.0V, the linearity of PA is improved, and the quality of a transmitting signal is ensured.
Illustratively, taking a 2.4GHz dual-frequency wireless Access Point (AP) as an example, two states of VOUT can be realized by pulling a low impedance state and a high impedance state through a GPIO port. The third resistor R3 is selected to make VOUT equal to 3.3V when GPIO is in a high resistance state, and make VOUT equal to 5.0V when GPIO is pulled low.
Referring to fig. 3, fig. 3 is an equivalent circuit diagram of the power amplifier when the controller operates in a high impedance state; at this time, the following conditions are satisfied:
the formula (1) is obtained after conversion:
wherein, VFB is the voltage of a feedback pin of the power control chip U and is a known parameter; r2 is a recommended parameter of the power control chip U and is also a known parameter; VOUT is 3.3V, so the first resistance R1 can be calculated by equation (2). After R1 is determined, VOUT is 3.3V when GPIO is in the high impedance state.
Referring to fig. 4, fig. 4 is an equivalent circuit diagram of the power amplifier when the controller operates in a low state; at this time, the following conditions are satisfied:
the above formula (3) is obtained by conversion:
wherein, RGPIO is the internal resistance when GPIO is pulled down, and is a known parameter; r1 is calculated by equation (2); r2 is also a known parameter; VOUT is also a known parameter at this time, which is 5.0V; the value of R3 can be calculated by equation (4).
Similarly, a suitable resistor can be selected by the 5GHz dual-frequency wireless Access Point (AP) in the above manner, which is not described herein again. And selecting a proper third resistor R3 to make VOUT equal to 3.3V when the resistance of GPIO is high and equal to 5.0V when GPIO is pulled low.
Compared with the prior art, the power amplifier power supply voltage control method disclosed by the embodiment of the invention comprises the steps of firstly, obtaining the working frequency of the power amplifier to determine whether the power amplifier works at the working frequency of 2.4GHz or 5 GHz; then, acquiring the transmission power requirement which needs to be met by the wireless equipment where the power amplifier is located; and finally, switching the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state, and the wireless equipment can meet different transmission power requirements. The power amplifier power supply voltage control method disclosed by the embodiment of the invention enables the wireless equipment to be self-adaptive to the emission power requirements of different countries or different channels, and simultaneously can improve the performance of the wireless equipment and reduce the cost.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a power amplifier supply voltage control apparatus according to an embodiment of the present invention; the power amplifier supply voltage control device 10 includes:
the data acquisition module 11 is used for acquiring the working frequency of the power amplifier; the power amplifier is also used for acquiring the preset transmission power requirement which needs to be met by the wireless equipment where the power amplifier is located;
and the working state switching module 12 is configured to switch the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs a corresponding power amplifier supply voltage according to the switched working state.
It should be noted that the power amplifier supply voltage control apparatus 10 according to the embodiment of the present invention may be installed in a power amplifier, and the specific structure of the power amplifier may refer to fig. 2, and includes a power Output terminal VOUT, a power control chip U, a first resistor R1, a second resistor R2, a third resistor R3, and a GPIO (General Purpose Input/Output) port. Preferably, the power control chip U is a DC-DC control chip.
The power amplifier supply voltage control device 10 is connected with the GPIO port. Firstly, the data obtaining module 11 obtains the operating frequency of the power amplifier; illustratively, the operating frequencies of the power amplifier include 2.4GHz and 5 GHz. Then, the data obtaining module 11 obtains the transmission power requirement that the wireless device where the power amplifier is located needs to meet, different countries or different channels of the same country have different transmission power requirements for the wireless device, and the power amplifier supply voltage control device 10 obtains the transmission power requirement that needs to be met currently. Finally, the working state switching module 12 switches the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state.
Preferably, the working state includes a high impedance state, a high level state and a low level state. The transmission power requirement comprises a corresponding relation of a preset authentication condition, authentication power and the working frequency of the power amplifier; the preset authentication condition includes at least one of a channel and a country code, the country code is a code of a country to which the wireless device is applicable, and the authentication power is a power to which the wireless device is applicable in a current country.
And a third resistor R3 is connected in series on a feedback link of a power supply control chip U for supplying power to the PA and is connected to the GPIO port. The GPIO port receives three states, i.e., a high level, a low level, and a high impedance state, of the power supply voltage control device 10 of the power amplifier, and3 different sets of values can be taken for the power output terminal VOUT of the corresponding PA. The country code/channel is switched, and the GPIO is set to be in different states, so that the purpose that the PA has different power supply voltages when the country code is different and the PA has self-adaptive performance to different country codes or different channels is achieved.
When the power amplifier supply voltage control device 10 obtains the transmission power requirement, the power amplifier supply voltage is adjusted according to the working frequency of the current power amplifier, the country code/channel of the current country, and the authentication power. For example, the transmit power requirement satisfies: the country code is EU (Europe), the authentication power corresponding to the working frequency of 2.4GHz is low, and the authentication power corresponding to the working frequency of 5GHz is high; when the working frequency of the power amplifier is acquired to be 2.4GHz, the corresponding authentication power is low, the power supply voltage output by the power amplifier is low and is 3.3V, and the controller needs to work in a high-impedance state in order to meet the requirement that the power supply voltage is kept at 3.3V.
In a preferred embodiment, when the authentication condition is a country code, the wireless device requires a correspondence of the country code, an authentication power, and an operating frequency of the power amplifier. Generally, European (EU) has lower 2.4GHz certification power than Japanese (JP), EU 5G Band3 (5490-5710 MHz) has higher certification power than JP 5G W56Band (5490-5710 MHz), namely, EU 2.4GHz certification power is low, and 5GHz certification power is high; JP 2.4GHz authentication power is high, and 5GHz authentication power is low. When the software is switched to the EU country code, under the working frequency of 2.4GHz, the controller works in a high-impedance state, the GPIO is in a high-impedance state, VOUT is 3.3V, and the power meter is switched to the EU country power meter, namely 2.4G power is low, and 5G power is high; at an operating frequency of 5GHz, the controller operates in a low state, GPIO is pulled low, and VOUT is 5.0V. When the software is switched to the JP country code, under the working frequency of 2.4GHz, the controller works in a low level state, GPIO is pulled down, VOUT is 5.0V, and the power meter is switched to the JP country power meter, namely 2.4G power is high and 5G power is low; under the working frequency of 5GHz, the controller works in a high-impedance state, GPIO high-impedance state, and VOUT is 3.3V. Therefore, the AP can realize the optimal performance under the state codes of EU and JP under the condition of certain power consumption, and the heat dissipation cost and the power adapter cost are the lowest as possible.
In another preferred embodiment, when the authentication condition is a channel, the wireless device needs to satisfy a correspondence relationship between the channel, the authentication power, and the operating frequency of the power amplifier. The U.S. certification (FCC) generally shows that the power of CH1, CH2, CH10 and CH11 channels and the power of 5GHz Band1 (5170-5250 MHz) channels are lower in 2.4GHz, and the power of other 2.4GHz channels and the power of 5GHz Band4 (5735-5835 MHz) channels are higher. When 2.4GHz is switched to channels CH1, CH2, CH10 and CH11, power is reduced, GPIO is pulled down, VOUT is 3.3V, PA efficiency is improved, temperature is reduced, and service life is prolonged; when 2.4GHz switches to other channels, power is improved, GPIO is pulled high, VOUT is 5.0V, PA linearity is improved, and transmitting signal quality is guaranteed. When the 5GHz is switched to a Band1 channel, the power is reduced, GPIO is pulled low, VOUT is 3.3V, PA efficiency is improved, the temperature is reduced, and the service life of a device is prolonged; when 5GHz is switched to a Band4 channel, the power is increased, GPIO is pulled high, VOUT is 5.0V, the linearity of PA is improved, and the quality of a transmitting signal is ensured.
Compared with the prior art, the power amplifier supply voltage control device 10 disclosed in the embodiment of the invention comprises a data acquisition module 11 for acquiring the working frequency of the power amplifier to determine whether the power amplifier works at the working frequency of 2.4GHz or 5 GHz; then, the data obtaining module 11 obtains the transmission power requirement that the wireless device where the power amplifier is located needs to meet; finally, the working state switching module 12 switches the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state, thereby enabling the wireless device to meet different transmission power requirements. The power amplifier supply voltage control device disclosed by the embodiment of the invention enables the wireless equipment to be self-adaptive to the transmission power requirements of different countries or different channels, and simultaneously can improve the performance of the wireless equipment and reduce the cost.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a power amplifier according to an embodiment of the present invention. The power amplifier includes: the power supply control circuit comprises a power supply control chip U, a power supply output end VOUT, a first resistor R1, a second resistor R2, a third resistor R3 and a controller 10; the power supply control chip U is a DC-DC control chip.
A first end of the first resistor R1 is connected to the power output terminal VOUT, and a second end of the first resistor R1 is connected to a feedback pin VFB of the power control chip U;
a first end of the second resistor R2 is connected to a feedback pin VFB of the power control chip U, and a second end of the second resistor R2 is grounded GND;
a first end of the third resistor R3 is connected to the feedback pin VFB of the power control chip U, and a second end of the third resistor R3 is connected to the controller 10;
the controller 10 is a power amplifier supply voltage control device as described in the above embodiments.
Specifically, the controller 10 obtains the operating frequency of the power amplifier; illustratively, the operating frequencies of the power amplifier include 2.4GHz and 5 GHz. Then, the controller 10 obtains the transmission power requirement that the wireless device where the power amplifier is located needs to meet, different countries have different transmission power requirements for the wireless device, and the controller 10 obtains the transmission power requirement that needs to be met currently. Finally, the controller 10 switches the operating state according to the operating frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched operating state.
Preferably, the working state includes a high impedance state, a high level state and a low level state. The transmission power requirement comprises a corresponding relation of a preset authentication condition, authentication power and the working frequency of the power amplifier; the preset authentication condition includes at least one of a channel and a country code, the country code is a code of a country to which the wireless device is applicable, and the authentication power is a power to which the wireless device is applicable in a current country.
And a third resistor R3 is connected in series on a feedback link of a power supply control chip U for supplying power to the PA and is connected to the GPIO port. The GPIO port receives the three states of high level, low level, and high impedance of the controller 10, and the power output terminal VOUT of the corresponding PA can take 3 different sets of values. The country code/channel is switched, and the GPIO is set to be in different states, so that the purpose that the PA has different power supply voltages when the country code is different and the PA has self-adaptive performance to different country codes or different channels is achieved.
When the controller 10 obtains the transmission power requirement, the power supply voltage of the power amplifier is adjusted according to the working frequency of the current power amplifier, the country code of the current country and the authentication power. For example, the transmit power requirement satisfies: the country code is EU (Europe), the authentication power corresponding to the working frequency of 2.4GHz is low, and the authentication power corresponding to the working frequency of 5GHz is high; when the working frequency of the power amplifier is acquired to be 2.4GHz, the corresponding authentication power is low, the power supply voltage output by the power amplifier is low and is 3.3V, and the controller needs to work in a high-impedance state in order to meet the requirement that the power supply voltage is kept at 3.3V.
In a preferred embodiment, when the authentication condition is a country code, the wireless device requires a correspondence of the country code, an authentication power, and an operating frequency of the power amplifier. Generally, European (EU) has lower 2.4GHz authentication power than Japanese (JP), EU 5G Band3 (5490-5710 MHz) has higher authentication power than JP 5G W56Band (5490-5710 MHz), namely, EU 2.4GHz authentication power is low, and 5GHz authentication power is high; JP 2.4GHz authentication power is high, and 5GHz authentication power is low. When the software is switched to the EU country code, under the working frequency of 2.4GHz, the controller works in a high-impedance state, the GPIO is in a high-impedance state, VOUT is 3.3V, and the power meter is switched to the EU country power meter, namely 2.4G power is low, and 5G power is high; at an operating frequency of 5GHz, the controller operates in a low state, GPIO is pulled low, and VOUT is 5.0V. When the software is switched to the JP country code, under the working frequency of 2.4GHz, the controller works in a low level state, GPIO is pulled down, VOUT is 5.0V, and the power meter is switched to the JP country power meter, namely 2.4G power is high and 5G power is low; under the working frequency of 5GHz, the controller works in a high-impedance state, GPIO high-impedance state, and VOUT is 3.3V. Therefore, the AP can realize the optimal performance under the state codes of EU and JP under the condition of certain power consumption, and the heat dissipation cost and the power adapter cost are the lowest as possible.
In another preferred embodiment, when the authentication condition is a channel, the wireless device needs to satisfy a correspondence relationship between the channel, the authentication power, and the operating frequency of the power amplifier. The U.S. certification (FCC) generally shows that the power of CH1, CH2, CH10 and CH11 channels and the power of 5GHz Band1 (5170-5250 MHz) channels are lower in 2.4GHz, and the power of other 2.4GHz channels and the power of 5GHz Band4 (5735-5835 MHz) channels are higher. When 2.4GHz is switched to channels CH1, CH2, CH10 and CH11, power is reduced, GPIO is pulled down, VOUT is 3.3V, PA efficiency is improved, temperature is reduced, and service life is prolonged; when 2.4GHz switches to other channels, power is improved, GPIO is pulled high, VOUT is 5.0V, PA linearity is improved, and transmitting signal quality is guaranteed. When the 5GHz is switched to a Band1 channel, the power is reduced, GPIO is pulled low, VOUT is 3.3V, PA efficiency is improved, the temperature is reduced, and the service life of a device is prolonged; when 5GHz is switched to a Band4 channel, the power is increased, GPIO is pulled high, VOUT is 5.0V, the linearity of PA is improved, and the quality of a transmitting signal is ensured.
Furthermore, the number of the third resistors R3 and the number of the controllers 10 are at least two, and the third resistors R3 correspond to the controllers 10 one by one; a first end of each of the third resistors R3 is connected to the feedback pin VFB of the power control chip U, and a second end of each of the third resistors R3 is connected to the corresponding controller 10. Illustratively, GPIOs are respectively provided on the power amplifier to connect with a plurality of controllers 10, the plurality of GPIOs correspond to one country code/channel, and more country codes/channels can be controlled by combining the plurality of GPIOs.
Compared with the prior art, the power amplifier disclosed by the embodiment of the invention has the advantages that firstly, the controller 10 acquires the working frequency of the power amplifier to determine whether the power amplifier works at the working frequency of 2.4GHz or 5 GHz; then, the controller 10 obtains the transmission power requirement that the wireless device where the power amplifier is located needs to meet; finally, the controller 10 switches the operating state according to the operating frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched operating state, thereby enabling the wireless device to meet different transmission power requirements. The power amplifier disclosed by the embodiment of the invention enables the wireless equipment to be self-adaptive to the transmission power requirements of different countries or different channels, and simultaneously can improve the performance of the wireless equipment and reduce the cost.
The embodiment of the present invention further provides a wireless device, including the power amplifier according to the above embodiment.
For a specific operation process of the power amplifier, reference may be made to the description of the foregoing embodiments, and details are not repeated herein.
Compared with the prior art, the wireless device disclosed by the embodiment of the invention firstly obtains the working frequency of the power amplifier to determine whether the power amplifier works at the working frequency of 2.4GHz or 5 GHz; then, acquiring the transmission power requirement required to be met by the wireless equipment; and finally, switching the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state, and the wireless equipment can meet different transmission power requirements. The wireless equipment disclosed by the embodiment of the invention can be adaptive to the transmission power requirements of different countries or different channels, and meanwhile, the performance of the wireless equipment can be improved and the cost can be reduced.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method for controlling a supply voltage of a power amplifier, comprising:
acquiring the working frequency of a power amplifier;
acquiring a preset transmitting power requirement which needs to be met by the wireless equipment where the power amplifier is located;
and switching the working state according to the working frequency and the transmission power requirement, so that the power supply system outputs the corresponding power amplifier supply voltage according to the switched working state.
2. The power amplifier supply voltage control method of claim 1 wherein the operating states comprise a high impedance state and a low level state.
3. The power amplifier supply voltage control method of claim 1, wherein the transmission power requirement includes a correspondence of a preset authentication condition, an authentication power, and an operating frequency of the power amplifier; the preset authentication condition includes at least one of a channel and a country code, the country code is a code of a country to which the wireless device is applicable, and the authentication power is a power to which the wireless device is applicable in a current country.
4. A power amplifier supply voltage control apparatus, comprising:
the data acquisition module is used for acquiring the working frequency of the power amplifier; the power amplifier is also used for acquiring the preset transmission power requirement which needs to be met by the wireless equipment where the power amplifier is located;
and the working state switching module is used for switching the working state according to the working frequency and the transmission power requirement so that the power supply system outputs corresponding power amplifier supply voltage according to the switched working state.
5. The power amplifier supply voltage control of claim 4 wherein the operating states comprise a high impedance state and a low level state.
6. The power amplifier supply voltage control of claim 4, wherein the transmit power requirement comprises a correspondence of a preset authentication condition, an authentication power, and an operating frequency of the power amplifier; the preset authentication condition includes at least one of a channel and a country code, the country code is a code of a country to which the wireless device is applicable, and the authentication power is a power to which the wireless device is applicable in a current country.
7. A power amplifier, comprising: the power supply control circuit comprises a power supply control chip, a power supply output end, a first resistor, a second resistor, a third resistor and a controller; wherein the content of the first and second substances,
the first end of the first resistor is connected with the power supply output end, and the second end of the first resistor is connected with a feedback pin of the power supply control chip;
the first end of the second resistor is connected with a feedback pin of the power control chip, and the second end of the second resistor is grounded;
the first end of the third resistor is connected with a feedback pin of the power control chip, and the second end of the third resistor is connected with the controller;
the controller is the power amplifier supply voltage control device as claimed in any one of claims 4 to 6.
8. The power amplifier of claim 7, wherein the power supply control chip is a DC-DC control chip.
9. The power amplifier of claim 7, wherein the number of the third resistors and the number of the controllers are at least two, and the third resistors are in one-to-one correspondence with the controllers; wherein the content of the first and second substances,
the first end of each third resistor is connected with a feedback pin of the power control chip, and the second end of each third resistor is connected with the corresponding controller.
10. A wireless device comprising a power amplifier according to any of claims 7 to 9.
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| CN201911408828.XA CN111061173A (en) | 2019-12-31 | 2019-12-31 | Power amplifier supply voltage control method and device and wireless equipment |
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| CN201911408828.XA CN111061173A (en) | 2019-12-31 | 2019-12-31 | Power amplifier supply voltage control method and device and wireless equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111726140A (en) * | 2020-06-19 | 2020-09-29 | 维沃移动通信有限公司 | Power amplifier control method and device, WIFI radio frequency circuit and electronic equipment |
| CN112469112A (en) * | 2020-11-25 | 2021-03-09 | Oppo（重庆）智能科技有限公司 | Frequency control method, device, radio frequency system and communication equipment |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217748A (en) * | 2008-01-08 | 2008-07-09 | 北京天碁科技有限公司 | A TD-SCDMA terminal and the corresponding radio frequency power amplifier electricity saving method |
| CN101778460A (en) * | 2010-01-20 | 2010-07-14 | 华为技术有限公司 | Method and system for power receiving in Wireless Local Area Network (WLAN) and multiple input multiple output device |
| CN101878597A (en) * | 2007-11-29 | 2010-11-03 | 微软公司 | Be used for the strategy enforcement that multi radio transmits and receives |
| CN102158078A (en) * | 2011-01-21 | 2011-08-17 | 华为终端有限公司 | Power amplifier power supply circuit and terminal |
| CN103024887A (en) * | 2012-12-24 | 2013-04-03 | 广东欧珀移动通信有限公司 | WLAN (wireless local area network) channel and power distribution method and system for mobile terminal |
| CN103428829A (en) * | 2012-05-14 | 2013-12-04 | 联想(北京)有限公司 | Method for optimizing communication terminal power consumption and communication terminal |
| CN104125624A (en) * | 2014-06-16 | 2014-10-29 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN104685917A (en) * | 2012-09-24 | 2015-06-03 | 交互数字专利控股公司 | Channel quality measurement and transmit power allocation in a dynamic spectrum management system |
| CN107070486A (en) * | 2017-05-27 | 2017-08-18 | 青岛海信移动通信技术股份有限公司 | The method and radio circuit of a kind of supply voltage for adjusting radio-frequency power amplifier |
| CN108174024A (en) * | 2017-12-20 | 2018-06-15 | 广东欧珀移动通信有限公司 | End equipment power control method, device and terminal device |
| CN108601073A (en) * | 2018-07-09 | 2018-09-28 | 深圳市万普拉斯科技有限公司 | Reduce method, mobile terminal and the computer readable storage medium of SAR |
| CN209358534U (en) * | 2019-03-18 | 2019-09-06 | 深圳市爱图仕影像器材有限公司 | A kind of circuit adjusting radio transmitted power |
| US20190319585A1 (en) * | 2013-09-19 | 2019-10-17 | Skyworks Solutions, Inc. | Dynamic error vector magnitude duty cycle correction |
-
2019
- 2019-12-31 CN CN201911408828.XA patent/CN111061173A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101878597A (en) * | 2007-11-29 | 2010-11-03 | 微软公司 | Be used for the strategy enforcement that multi radio transmits and receives |
| CN101217748A (en) * | 2008-01-08 | 2008-07-09 | 北京天碁科技有限公司 | A TD-SCDMA terminal and the corresponding radio frequency power amplifier electricity saving method |
| CN101778460A (en) * | 2010-01-20 | 2010-07-14 | 华为技术有限公司 | Method and system for power receiving in Wireless Local Area Network (WLAN) and multiple input multiple output device |
| CN102158078A (en) * | 2011-01-21 | 2011-08-17 | 华为终端有限公司 | Power amplifier power supply circuit and terminal |
| CN103428829A (en) * | 2012-05-14 | 2013-12-04 | 联想(北京)有限公司 | Method for optimizing communication terminal power consumption and communication terminal |
| CN104685917A (en) * | 2012-09-24 | 2015-06-03 | 交互数字专利控股公司 | Channel quality measurement and transmit power allocation in a dynamic spectrum management system |
| CN103024887A (en) * | 2012-12-24 | 2013-04-03 | 广东欧珀移动通信有限公司 | WLAN (wireless local area network) channel and power distribution method and system for mobile terminal |
| US20190319585A1 (en) * | 2013-09-19 | 2019-10-17 | Skyworks Solutions, Inc. | Dynamic error vector magnitude duty cycle correction |
| CN104125624A (en) * | 2014-06-16 | 2014-10-29 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN107070486A (en) * | 2017-05-27 | 2017-08-18 | 青岛海信移动通信技术股份有限公司 | The method and radio circuit of a kind of supply voltage for adjusting radio-frequency power amplifier |
| CN108174024A (en) * | 2017-12-20 | 2018-06-15 | 广东欧珀移动通信有限公司 | End equipment power control method, device and terminal device |
| CN108601073A (en) * | 2018-07-09 | 2018-09-28 | 深圳市万普拉斯科技有限公司 | Reduce method, mobile terminal and the computer readable storage medium of SAR |
| CN209358534U (en) * | 2019-03-18 | 2019-09-06 | 深圳市爱图仕影像器材有限公司 | A kind of circuit adjusting radio transmitted power |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111726140A (en) * | 2020-06-19 | 2020-09-29 | 维沃移动通信有限公司 | Power amplifier control method and device, WIFI radio frequency circuit and electronic equipment |
| CN112469112A (en) * | 2020-11-25 | 2021-03-09 | Oppo（重庆）智能科技有限公司 | Frequency control method, device, radio frequency system and communication equipment |
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Application publication date: 20200424 |