CN107707251B - Signal transmission power control method and device - Google Patents
Signal transmission power control method and device Download PDFInfo
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- CN107707251B CN107707251B CN201710474566.1A CN201710474566A CN107707251B CN 107707251 B CN107707251 B CN 107707251B CN 201710474566 A CN201710474566 A CN 201710474566A CN 107707251 B CN107707251 B CN 107707251B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L5/00—Automatic control of voltage, current, or power
- H03L5/02—Automatic control of voltage, current, or power of power
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The embodiment of the invention discloses a signal transmission power control method and a signal transmission power control device, which relate to the technical field of electronics, wherein the method comprises the following steps: starting a radio frequency power amplifier; acquiring a preset first band gap reference voltage control word and a first band gap reference voltage regulation step; adjusting the step according to the first band gap reference voltage control word and the first band gap reference voltage, and adjusting the band gap reference voltage input by the radio frequency power amplifier upwards to complete first-stage power ramp control; acquiring a preset first gain control word and a first gain adjustment step; and according to the first gain control word and the first gain adjustment step, adjusting the gain multiple of the radio frequency power amplifier upwards to complete the second-stage power ramp control. The embodiment of the invention can realize the slow and smooth control of the transmitting power when the radio frequency amplifier is turned on or turned off, and effectively inhibit the out-of-band frequency spectrum leakage.
Description
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a method and an apparatus for controlling signal transmission power.
Background
In recent years, a series of researches on wireless communication circuits are carried out at home and abroad, and a lot of results are obtained in a wireless communication system, especially a low-power-consumption bluetooth wireless communication standard modulation mode GFSK (Gaussian Frequency Shift Keying) is achieved, so that a larger breakthrough is obtained, the wireless communication system has better radio Frequency performance such as easy realization, wide applicable Frequency band, strong anti-interference capability and the like, but some defects also exist in some aspects, for example, when a radio Frequency power amplifier used for GFSK modulation is turned on or turned off, the instantaneous change amplitude of signal transmission power is larger, out-of-band spectrum leakage is easy to occur, and the communication performance is reduced; in addition, when the radio frequency power amplifier is started, the voltage-controlled oscillator can generate frequency pulling and impact current.
Disclosure of Invention
The embodiment of the invention provides a signal transmission power control method and a signal transmission power control device, which can realize slow and smooth control of signal transmission power and inhibit out-of-band frequency spectrum leakage when a radio frequency power amplifier is started; in addition, the frequency pulling and impact current generated by the voltage-controlled oscillator can be reduced.
In a first aspect, an embodiment of the present invention provides a method for controlling signal transmission power, including:
starting a radio frequency power amplifier;
acquiring a preset first band gap reference voltage control word and a first band gap reference voltage regulation step;
according to the first band gap reference voltage control word and the first band gap reference voltage adjusting step, adjusting the band gap reference voltage input by the radio frequency power amplifier upwards to complete first-stage power climbing control;
acquiring a preset first gain control word and a first gain adjustment step;
and adjusting the gain multiple of the radio frequency power amplifier upwards according to the first gain control word and the first gain adjustment step to complete secondary power ramp control.
In a second aspect, an embodiment of the present invention provides a signal transmission power control method, including:
turning off the radio frequency power amplifier;
acquiring a preset second gain control word and a second gain adjustment step;
according to the second gain control word and the second gain adjustment step, adjusting the gain multiple of the radio frequency power amplifier downwards to complete first-stage power ramp-down control;
acquiring a preset second band-gap reference voltage control word and a second band-gap reference voltage regulation step;
and adjusting the step according to the second band-gap reference voltage control word and the second band-gap reference voltage, and adjusting the band-gap reference voltage input by the radio frequency power amplifier downwards to complete secondary power ramp-down control.
In a third aspect, an embodiment of the present invention provides a signal transmission power control apparatus, including:
the first switch control unit is used for starting the radio frequency power amplifier;
the first-stage climbing parameter acquisition unit is used for acquiring a preset first band gap reference voltage control word and a first band gap reference voltage regulation step;
the first-stage climbing control unit is used for adjusting the band gap reference voltage input by the radio frequency power amplifier upwards according to the preset first band gap reference voltage control word and the first band gap reference voltage adjusting step, so as to complete first-stage power climbing control;
the second-stage climbing parameter acquisition unit is used for acquiring a preset first gain control word and a first gain adjustment step;
and the second-stage climbing control unit is used for upwards adjusting the gain multiple of the radio frequency power amplifier according to the preset first gain control word and the first gain adjustment step to complete second-stage power climbing control.
In a fourth aspect, an embodiment of the present invention provides a signal transmission power control apparatus, including:
the second switch control unit is used for turning off the radio frequency power amplifier;
the first-stage slope descending parameter acquisition unit is used for acquiring a preset second gain control word and a second gain adjustment step;
the first-stage slope reduction control unit is used for adjusting the gain multiple of the radio frequency power amplifier downwards according to the second gain control word and the second gain adjustment step to complete first-stage power slope reduction control;
the second-stage slope descending parameter obtaining unit is used for obtaining a preset second band-gap reference voltage control word and a second band-gap reference voltage adjusting step;
and the secondary power down-slope control unit is used for adjusting the step according to the second band-gap reference voltage control word and the second band-gap reference voltage, and downwards adjusting the band-gap reference voltage input by the radio-frequency power amplifier to complete secondary power down-slope control.
In a fifth aspect, an embodiment of the present invention provides another signal transmission power control apparatus, including a processor, an input device, an output device, and a memory, where the processor, the input device, the output device, and the memory are connected to each other, where the memory is used to store an application program instruction that supports the signal transmission power control apparatus to execute the method described above, and the processor is configured to call the application program instruction to execute the method of the first aspect.
In a sixth aspect, the present invention provides a computer-readable storage medium, in which a computer program is stored, the computer program including program instructions, which, when executed by a processor, cause the processor to perform the method of the first aspect.
In a seventh aspect, an embodiment of the present invention provides another signal transmission power control apparatus, including a processor, an input device, an output device, and a memory, where the processor, the input device, the output device, and the memory are connected to each other, where the memory is used to store an application program instruction that supports the signal transmission power control apparatus to execute the method, and the processor is configured to call the application program instruction to execute the method of the second aspect.
In an eighth aspect, the present invention provides a computer-readable storage medium, wherein the computer storage medium stores a computer program, and the computer program includes program instructions, which, when executed by a processor, cause the processor to execute the method of the second aspect.
The embodiment of the invention can realize the slow and smooth control of the transmitting power and effectively inhibit the out-of-band frequency spectrum leakage by finely controlling the two-stage power climbing/descending when the radio frequency amplifier is started or closed; in addition, according to the embodiment of the invention, after the radio frequency power amplifier is started, the preset climbing delay time is waited, and then the power climbing is started, so that the frequency traction and impact current generated by the voltage-controlled oscillator when the radio frequency amplifier is started can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a signal transmission power control method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a signal transmission power control method according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart of a signal transmission power control method according to a third embodiment of the present invention;
fig. 4 is a schematic flow chart of a signal transmission power control method according to a fourth embodiment of the present invention;
fig. 5 is a timing control diagram of a radio frequency power amplifier in a signal transmission power control method according to a fourth embodiment of the present invention;
fig. 6 is a schematic block diagram of a signal transmission power control apparatus according to a fifth embodiment of the present invention;
fig. 7 is a schematic block diagram of a signal transmission power control apparatus according to a sixth embodiment of the present invention;
fig. 8 is a schematic block diagram of a signal transmission power control apparatus according to a seventh embodiment of the present invention;
fig. 9 is a schematic block diagram of a signal transmission power control apparatus according to an eighth embodiment of the present invention;
fig. 10 is a schematic block diagram of a signal transmission power control apparatus according to a ninth embodiment of the present invention;
fig. 11 is a schematic block diagram of a signal transmission power control apparatus according to a tenth 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 some, not all, embodiments of the present invention. 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.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Referring to fig. 1, a schematic flowchart of a method for controlling signal transmission power according to an embodiment of the present invention is provided, where the method is executed by a signal transmission frequency control apparatus of a radio frequency power amplifier. As shown in fig. 1, the method for controlling signal transmission power provided in this embodiment may include the following steps:
step S101, turning on a radio frequency power amplifier.
Preferably, in this embodiment, the signal transmission frequency control device of the rf power amplifier receives a packet enable signal output by a front stage circuit, and determines whether to turn on the rf power amplifier according to the packet enable signal, where the packet enable signal is a high level signal or a low level signal, the signal transmission frequency control device analyzes the packet enable signal after receiving the packet enable signal, and turns on the rf power amplifier if the packet enable signal is analyzed to be the high level signal.
Step S102, obtaining a preset first band gap reference voltage control word and a first band gap reference voltage adjusting step.
Preferably, in this embodiment, the first bandgap reference voltage control word may be preset by a user according to a target power, and the first bandgap reference voltage adjustment step may be preset by the user according to the first bandgap reference voltage control word and a desired first power ramp time, where the first bandgap reference voltage control word refers to a target bandgap reference voltage for a first power ramp, and the first bandgap reference voltage adjustment step refers to an adjustment step of a bandgap reference voltage input by a radio frequency amplifier during the power ramp.
And step S103, adjusting the band gap reference voltage input by the radio frequency power amplifier upwards according to the preset first band gap reference voltage control word and the first band gap reference voltage adjusting step, and finishing primary power ramp control.
Preferably, in this embodiment, step S103 specifically includes:
and controlling the band gap reference voltage input by the radio frequency power amplifier to be adjusted upwards from zero according to the first band gap reference voltage adjusting step until the band gap reference voltage input by the radio frequency power amplifier reaches the preset first band gap reference voltage control word, and finishing primary power ramp control.
And step S104, after the first-stage power climbing is finished, acquiring a preset first gain control word and a first gain adjustment step.
Preferably, in this embodiment, the first gain control word may be preset by a user according to a target power, and the first gain adjustment step may be preset by the user according to the gain adjustment control word and a desired secondary power ramp time, where the first gain control word refers to a target gain multiple of the secondary power ramp, and the first gain adjustment step refers to an adjustment step of the gain multiple of the radio frequency amplifier during the power ramp.
And step S105, adjusting the gain multiple of the radio frequency power amplifier upwards according to the first gain control word and the first gain adjustment step, and finishing secondary power ramp control.
Preferably, in this embodiment, the radio frequency power amplifier includes a multi-stage amplifying circuit, and during the power ramp, the multi-stage amplifying circuit may be sequentially turned on according to a preset gain adjustment step to complete the gain control of the radio frequency power amplifier. Further, step S105 specifically includes:
and controlling the gain amplification factor of the radio frequency power amplifier to be slowly adjusted from zero to the upper part according to the first gain adjustment step until the gain amplification factor of the radio frequency power amplifier reaches the preset first gain control word, and finishing the secondary power ramp control.
It can be seen from the above that, in the signal transmission power control method provided in this embodiment, when the radio frequency power amplifier is turned on, the power is controlled to rise to the target power value in a two-stage power ramp control manner, so that when the radio frequency power amplifier is turned on, slow and smooth control of the transmission power can be achieved, and out-of-band spectrum leakage is effectively suppressed.
Fig. 2 is a schematic flowchart of a signal transmission power control method according to a second embodiment of the present invention, where an execution subject of the method is a signal transmission power control apparatus in a radio frequency power amplifier. Referring to fig. 2, with respect to the previous embodiment, the method for controlling signal transmission power provided by this embodiment further includes:
step S202, after the radio frequency power amplifier is started, waiting for a preset climbing delay time.
Preferably, in this embodiment, the preset ramp-up delay time may be preset by a user, and it needs to be ensured that the sum of the ramp-up delay time and the time required for the first-stage power ramp-up and the time required for the second-stage power ramp-up is greater than the time from the turning-on of the rf amplifier to the reception of the valid data packet sent by the preceding stage circuit. Therefore, the whole power climbing can be ensured to be completed before the effective field of the sending data packet arrives, and the communication error rate is reduced.
It should be noted that step S201, and steps S203 to step S206 in this embodiment are completely the same as the implementation manners of step S101 to step S105 in the previous embodiment, and therefore, no further description is given here.
Compared with the previous embodiment, the power ramp is started after the radio frequency power amplifier is started and the preset ramp delay time is waited, so that the frequency pulling and impact current generated by the voltage-controlled oscillator when the radio frequency amplifier is started can be reduced.
Fig. 3 is a schematic flowchart of a signal transmission power control method according to a third embodiment of the present invention, where an execution subject of the method is a signal transmission power control apparatus in a radio frequency power amplifier. Referring to fig. 3, the present embodiment provides a signal transmission power control method, including:
step S307, turning off the rf power amplifier.
Preferably, in this embodiment, the signal transmission frequency control device of the rf power amplifier receives a packet enable signal output by a front stage circuit, and determines whether to turn off the rf power amplifier according to the packet enable signal, where the packet enable signal is a high level signal or a low level signal, the signal transmission frequency control device analyzes the packet enable signal after receiving the packet enable signal, and turns off the rf power amplifier if the packet enable signal is analyzed to be the low level signal.
In step S308, a preset second gain control word and a second gain adjustment step are obtained.
The second gain control word refers to a target gain of the radio frequency amplifier in the power ramp-down process, and the second gain control word can be preset by a user. Preferably, in this embodiment, the second gain control word is zero.
The second gain adjustment step refers to a gain amplification factor of the radio frequency amplifier, and can be preset by a user according to a gain adjustment range and expected secondary power ramp-up time in a power ramp-down process.
Step S309, according to the second gain control word and the second gain adjustment step, adjusting the gain multiple of the radio frequency power amplifier downwards to complete the first-stage power ramp-down control.
Preferably, in this embodiment, step S309 specifically includes:
and according to the second gain adjustment step, controlling the gain multiple of the radio frequency amplifier to be slowly adjusted downwards from the target gain multiple in the previous power ramp until the gain multiple of the radio frequency amplifier is reduced to zero, and finishing the first-stage power ramp-down control.
Step S310, obtaining a preset second bandgap reference voltage control word and a second bandgap reference voltage adjustment step.
The second bandgap reference voltage control word is a target bandgap reference voltage of the secondary power rate ramp-down and can be preset by a user. Preferably, in this embodiment, the second bandgap reference voltage is zero.
The second bandgap reference voltage regulation step refers to a regulation step of the bandgap reference voltage input by the radio frequency amplifier in the power ramp-down process, and can be set by a user according to the time when the regulation range of the bandgap reference voltage is the expected secondary power ramp-down when the secondary power ramp-down is performed.
And step S311, adjusting the step according to the second band-gap reference voltage control word and the second band-gap reference voltage, and adjusting the band-gap reference voltage input by the radio frequency power amplifier downwards to complete the secondary power down-slope control.
Preferably, in this embodiment, step S311 specifically includes:
and controlling the band-gap reference voltage input by the radio frequency power amplifier to be adjusted downwards from the band-gap reference voltage target value of previous power ramp according to the second band-gap reference voltage adjusting step until the band-gap reference voltage input by the radio frequency power amplifier is reduced to zero, and finishing secondary power ramp-down control.
It can be seen from the above that, in the signal transmission power control method provided in this embodiment, when the radio frequency power amplifier is turned off, the power is controlled to be reduced to zero by using a two-stage power ramp-down control method, so that when the radio frequency power amplifier is turned off, slow and smooth control of the transmission power can be realized, and out-of-band spectrum leakage is further effectively suppressed.
Fig. 4 is a schematic flowchart of a signal transmission power control method according to a fourth embodiment of the present invention. Referring to fig. 4, the present embodiment provides a signal transmission power control method, including:
step S401, turning on a radio frequency power amplifier;
step S402, after the radio frequency power amplifier is turned on, waiting for a preset ramp delay time.
Step S403, acquiring a preset first bandgap reference voltage control word and a first bandgap reference voltage regulation step;
step S404, adjusting the band gap reference voltage input by the radio frequency power amplifier upwards according to the first band gap reference voltage control word and the first band gap reference voltage adjusting step, and finishing first-stage power ramp control;
step S405, acquiring a preset first gain control word and a first gain adjustment step;
step S406, according to the first gain control word and the first gain adjustment step, adjusting the gain multiple of the radio frequency power amplifier upwards to complete the second-level power ramp control.
Step S407, turning off the radio frequency power amplifier;
step S408, acquiring a preset second gain control word and a second gain adjustment step;
step S409, adjusting the gain multiple of the radio frequency power amplifier downwards according to the second gain control word and the second gain adjustment step, and finishing first-stage power down-slope control;
step S410, acquiring a preset second band-gap reference voltage control word and a second band-gap reference voltage regulation step;
and step S411, adjusting the step according to the second band gap reference voltage control word and the second band gap reference voltage, and adjusting the band gap reference voltage input by the radio frequency power amplifier downwards to complete the secondary power down-slope control.
It should be noted that, in this embodiment, since the implementation manners of the above steps S401 to S404 are respectively completely the same as the implementation manners of the method steps in the embodiments shown in fig. 1 to fig. 3, no further description is provided herein.
In addition, in a specific application, the second gain adjustment step may be equal to or different from the preset first gain step. Preferably, in this embodiment, the second gain adjustment step is equal to the first gain adjustment step.
In addition, in a specific application, the second bandgap reference voltage adjusting step may be the same as or different from the first bandgap reference voltage adjusting step. Preferably, in this embodiment, the second bandgap reference voltage adjusting step is equal to the first bandgap reference voltage adjusting step.
Further, referring to fig. 5, it shows a timing control diagram of the rf power amplifier in this embodiment. Where Pkt _ en denotes an enable signal indicating a packet, tx _ data denotes a packet signal, Txvld denotes a packet valid field signal, Pa _ en denotes an enable signal for turning on or off the rf amplifier, Bgr _ d2a denotes a bandgap reference voltage signal, and Gctrl _ d2a denotes a gain signal. As can be seen from fig. 4, in this embodiment, power ramp-up can be completed before the digital valid signal arrives, and power ramp-down is started only when the digital valid signal ends, so that the communication error rate can be reduced.
It can be seen from the above that, in the signal transmission power control method provided in the embodiment of the present invention, when the radio frequency power amplifier is turned on or turned off, the signal transmission power of the radio frequency amplifier is adjusted by using a two-stage power ramp or ramp down control method, so that when the radio frequency power amplifier is turned on or turned off, the slow and smooth control of the transmission power can be realized, and the out-of-band spectrum leakage is further effectively suppressed; in addition, after the radio frequency amplifier is started, power climbing is started after the preset climbing delay time is waited, so that frequency traction and impact current caused by the voltage-controlled oscillator when the radio frequency amplifier is started can be reduced. .
Fig. 6 is a schematic block diagram of a signal transmission power control device according to a fifth embodiment of the present invention, where the signal transmission power control device is located in a radio frequency power amplifier and is used to control the signal transmission power of the radio frequency power amplifier. Only the portions related to the present embodiment are shown for convenience of explanation.
Referring to fig. 6, the present embodiment provides a signal transmission power control apparatus 600, including:
a first switch control unit 11, configured to turn on the radio frequency power amplifier;
a first-stage climbing parameter obtaining unit 12, configured to obtain a preset first bandgap reference voltage control word and a first bandgap reference voltage adjustment step;
the first-stage climbing control unit 13 is configured to adjust the step according to the first bandgap reference voltage control word and the first bandgap reference voltage, adjust the bandgap reference voltage input by the radio frequency power amplifier upward, and complete first-stage power climbing control;
a second-level climbing parameter obtaining unit 14, configured to obtain a preset first gain control word and a first gain adjustment step;
and the secondary climbing control unit 15 is configured to upwards adjust the gain multiple of the radio frequency power amplifier according to the preset first gain control word and the first gain adjustment step, so as to complete secondary power climbing control.
Preferably, referring to fig. 7, in a sixth embodiment, the signal transmission power control apparatus 700 further includes:
and the climbing delay unit 16 is configured to wait for a preset climbing delay time after the radio frequency power amplifier is turned on.
It should be noted that, since the method embodiments shown in fig. 1 to fig. 2 of the present invention are based on the same concept, the technical effects of the units in the apparatus provided in this embodiment are the same as the method embodiments shown in fig. 1 to fig. 2 of the present invention, and specific contents may refer to the descriptions in the method embodiments shown in fig. 1 to fig. 2 of the present invention, and are not described again here.
Therefore, it can be seen that the signal transmission power control device provided by the embodiment of the present invention can also realize the slow and smooth control of the transmission power when the radio frequency amplifier is turned on by the fine control of the two-stage power ramp, thereby effectively suppressing the out-of-band spectrum leakage; in addition, after the radio frequency power amplifier is started, the power ramp is started after the preset ramp delay time is waited, so that the frequency traction and the impact current generated by the voltage-controlled oscillator when the radio frequency amplifier is started can be reduced.
Fig. 8 is a schematic block diagram of a signal transmission power control device according to a seventh embodiment of the present invention, where the signal transmission power control device is located in a radio frequency power amplifier and is used for controlling the signal transmission power of the radio frequency power amplifier. Only the portions related to the present embodiment are shown for convenience of explanation.
Referring to fig. 8, the present embodiment provides a signal transmission power control apparatus 800 including:
a second switch control unit 17, configured to turn off the radio frequency power amplifier;
a first-level downhill parameter obtaining unit 18, configured to obtain a preset second gain adjustment step;
the first-stage slope-reducing control unit 19 is configured to adjust the gain multiple of the radio frequency power amplifier downward according to the second gain adjustment step until the gain multiple of the radio frequency amplifier is reduced to zero, and complete first-stage power slope-reducing control;
a second grade descending parameter obtaining unit 20, configured to obtain a preset second bandgap reference voltage regulation step when the first grade power descending is completed;
and the secondary power down-slope control unit 21 is configured to adjust the step according to the second bandgap reference voltage, and adjust the bandgap reference voltage input by the radio frequency power amplifier downward until the bandgap reference voltage drops to zero, thereby completing secondary power down-slope control.
It should be noted that, since the method embodiment shown in fig. 3 of the present invention is based on the same concept, the technical effects of the units in the apparatus provided in this embodiment are the same as those of the method embodiment shown in fig. 3 of the present invention, and specific contents may refer to the description in the method embodiment shown in fig. 3 of the present invention, and are not described herein again.
Therefore, it can be seen that, by means of the fine control of the two-stage power ramp-down, the signal transmission power control device provided by the embodiment of the present invention can realize the slow and smooth control of the transmission power when the radio frequency amplifier is turned off, and effectively suppress out-of-band spectrum leakage.
Fig. 9 is a schematic block diagram of a signal transmission power control device according to an eighth embodiment of the present invention, where the signal transmission power control device is located in a radio frequency power amplifier and is used for controlling the signal transmission power of the radio frequency power amplifier. Only the portions related to the present embodiment are shown for convenience of explanation.
Referring to fig. 9, the present embodiment provides a signal transmission power control apparatus 900 including:
a first switch control unit 11, configured to turn on the radio frequency power amplifier;
a first-stage climbing parameter obtaining unit 12, configured to obtain a preset first bandgap reference voltage control word and a first bandgap reference voltage adjustment step;
the first-stage climbing control unit 13 is configured to adjust the step according to the first bandgap reference voltage control word and the first bandgap reference voltage, adjust the bandgap reference voltage input by the radio frequency power amplifier upward, and complete first-stage power climbing control;
a second-level climbing parameter obtaining unit 14, configured to obtain a preset first gain control word and a first gain adjustment step;
and the secondary climbing control unit 15 is configured to upwards adjust the gain multiple of the radio frequency power amplifier according to the preset first gain control word and the first gain adjustment step, so as to complete secondary power climbing control.
And the climbing delay unit 16 is configured to wait for a preset climbing delay time after the radio frequency power amplifier is turned on.
A second switch control unit 17, configured to turn off the radio frequency power amplifier;
a first-level downhill parameter obtaining unit 18, configured to obtain a preset second gain adjustment step;
the first-stage slope-reducing control unit 19 is configured to adjust the gain multiple of the radio frequency power amplifier downward according to the second gain adjustment step until the gain multiple of the radio frequency amplifier is reduced to zero, and complete first-stage power slope-reducing control;
a second grade descending parameter obtaining unit 20, configured to obtain a preset second bandgap reference voltage regulation step when the first grade power descending is completed;
and the secondary power down-slope control unit 21 is configured to adjust the step according to the second bandgap reference voltage, and adjust the bandgap reference voltage input by the radio frequency power amplifier downward until the bandgap reference voltage drops to zero, thereby completing secondary power down-slope control.
It should be noted that, since the method embodiment shown in fig. 4 of the present invention is based on the same concept, the technical effects of the units in the apparatus provided in this embodiment are the same as the method embodiment shown in fig. 4 of the present invention, and specific contents may refer to the description in the method embodiment shown in fig. 4 of the present invention, and are not described herein again.
Therefore, it can be seen that the signal transmission power control device provided by the embodiment of the present invention, due to the fine control of the two-stage power ramp/ramp down, can realize the slow and smooth control of the transmission power when the radio frequency amplifier is turned on or off, and effectively suppress out-of-band spectrum leakage; in addition, after the radio frequency power amplifier is started, the power ramp is started after the preset ramp delay time is waited, so that the frequency traction and the impact current generated by the voltage-controlled oscillator when the radio frequency amplifier is started can be reduced.
Referring to fig. 10, a schematic block diagram of a signal transmission power control apparatus according to a ninth embodiment of the present invention is shown. As shown in fig. 10, the signal transmission power control apparatus 100 in the present embodiment may include: one or more processors 101; one or more input devices 102, one or more output devices 103, and memory 104. The processor 101, the input device 102, the output device 803, and the memory 104 are connected by a bus 105. The memory 102 is used to store application program instructions and the processor 101 is used to execute the instructions stored by the memory 102. The processor 101 is configured to invoke an application program instruction and execute the signal transmission power control method provided in the embodiment shown in fig. 1 or fig. 2, for example, the processor 101 is configured to invoke the application program instruction and execute the following steps:
starting a radio frequency power amplifier;
acquiring a preset first band gap reference voltage control word and a first band gap reference voltage regulation step;
according to the first band gap reference voltage control word and the first band gap reference voltage adjusting step, adjusting the band gap reference voltage input by the radio frequency power amplifier upwards to complete first-stage power climbing control;
acquiring a preset first gain control word and a first gain adjustment step;
and adjusting the gain multiple of the radio frequency power amplifier upwards according to the first gain control word and the first gain adjustment step to complete secondary power ramp control.
Referring to fig. 11, a schematic block diagram of a signal transmission power control apparatus according to a tenth embodiment of the present invention is shown. As shown in fig. 11, the signal transmission power control apparatus 200 in the present embodiment may include: one or more processors 201; one or more input devices 202, one or more output devices 203, and memory 204. The processor 201, the input device 202, the output device 203, and the memory 204 are connected by a bus 205. The memory 202 is used to store application program instructions and the processor 201 is used to execute the instructions stored by the memory 202. The processor 201 is configured to invoke an application program instruction to execute the signal transmission power control method provided in the embodiment shown in fig. 3, for example, the processor 201 is configured to invoke an application program instruction to execute the following steps:
turning off the radio frequency power amplifier;
acquiring a preset second gain control word and a second gain adjustment step;
according to the second gain control word and the second gain adjustment step, adjusting the gain multiple of the radio frequency power amplifier downwards to complete first-stage power ramp-down control;
acquiring a preset second band-gap reference voltage control word and a second band-gap reference voltage regulation step;
and adjusting the step according to the second band-gap reference voltage control word and the second band-gap reference voltage, and adjusting the band-gap reference voltage input by the radio frequency power amplifier downwards to complete secondary power ramp-down control.
It should be understood that, in the embodiment of the present invention, the Processor 101 or 201 may be a Central Processing Unit (CPU), and the Processor may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The input device 102 or 202 may include a touch pad, a fingerprint sensor (for collecting fingerprint information of a user and direction information of the fingerprint), a microphone, etc., and the output device 103 or 203 may include a display (LCD, etc.), a speaker, etc.
The memory 104 or 204 may include both read-only memory and random access memory and provides instructions and data to the processor 801. A portion of the memory 104 or 204 may also include non-volatile random access memory. For example, the memory 104 or 204 may also store device type information.
In a specific implementation, the processor 101 or 201, the input device 102 or 202, and the output device 103 or 203 described in this embodiment of the present invention may execute the implementation described in the method embodiment provided in this embodiment of the present invention, and may also execute the implementation of the signal transmission power control apparatus described in this embodiment of the present invention, which is not described herein again.
In an eleventh embodiment of the present invention, there is provided a computer-readable storage medium storing a computer program which, when executed by a processor, realizes:
starting a radio frequency power amplifier;
acquiring a preset first band gap reference voltage control word and a first band gap reference voltage regulation step;
according to the first band gap reference voltage control word and the first band gap reference voltage adjusting step, adjusting the band gap reference voltage input by the radio frequency power amplifier upwards to complete first-stage power climbing control;
acquiring a preset first gain control word and a first gain adjustment step;
and adjusting the gain multiple of the radio frequency power amplifier upwards according to the preset first gain control word and the first gain adjustment step to complete secondary power ramp control.
In an eleventh embodiment of the present invention, there is provided a computer-readable storage medium storing a computer program which, when executed by a processor, implements:
turning off the radio frequency power amplifier;
acquiring a preset second gain control word and a second gain adjustment step;
according to the second gain control word and the second gain adjustment step, adjusting the gain multiple of the radio frequency power amplifier downwards to complete first-stage power ramp-down control;
acquiring a preset second band-gap reference voltage control word and a second band-gap reference voltage regulation step;
and adjusting the step according to the second band-gap reference voltage control word and the second band-gap reference voltage, and adjusting the band-gap reference voltage input by the radio frequency power amplifier downwards to complete secondary power ramp-down control.
The computer readable storage medium may be an internal storage unit of the signal transmission power control device according to any of the foregoing embodiments, for example, a hard disk or a memory of the signal transmission power control device. The computer readable storage medium may also be an external storage device of the signal transmission power control apparatus, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the signal transmission power control apparatus. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the signal transmission power control apparatus. The computer-readable storage medium is used for storing the computer program and other programs and data required by the signal transmission power control apparatus. The computer readable storage medium may also be used to temporarily store data that has been output or is to be output.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working procedures of the signal transmission power control apparatus and the signal transmission power control unit described above may refer to the corresponding procedures in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed signal transmission power control apparatus and method can be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A signal transmission power control method, comprising:
starting a radio frequency power amplifier;
acquiring a preset first band gap reference voltage control word and a first band gap reference voltage regulation step; the first bandgap reference voltage control word is a target bandgap reference voltage of first-stage power ramp, and the first bandgap reference voltage regulation step is a regulation step of the bandgap reference voltage input by the radio frequency amplifier in the power ramp process;
according to the first band gap reference voltage control word and the first band gap reference voltage adjusting step, adjusting the band gap reference voltage input by the radio frequency power amplifier upwards to complete first-stage power climbing control;
acquiring a preset first gain control word and a first gain adjustment step;
and adjusting the gain multiple of the radio frequency power amplifier upwards according to the first gain control word and the first gain adjustment step to complete secondary power ramp control.
2. The signal transmission power control method according to claim 1, wherein the obtaining the preset first bandgap reference voltage control word and the bandgap reference voltage adjustment step further comprises:
and waiting for a preset climbing delay time after the radio frequency power amplifier is started.
3. A signal transmission power control method, comprising:
turning off the radio frequency power amplifier;
acquiring a preset second gain control word and a second gain adjustment step;
according to the second gain control word and the second gain adjustment step, adjusting the gain multiple of the radio frequency power amplifier downwards to complete first-stage power ramp-down control; the second gain control word refers to a target gain of the radio frequency amplifier in the power ramp-down process, and the second gain adjustment step refers to a gain amplification factor of the radio frequency amplifier in the power ramp-down process;
acquiring a preset second band-gap reference voltage control word and a second band-gap reference voltage regulation step;
and adjusting the step according to the second band-gap reference voltage control word and the second band-gap reference voltage, and adjusting the band-gap reference voltage input by the radio frequency power amplifier downwards to complete secondary power ramp-down control.
4. A signal transmission power control apparatus, comprising:
the first switch control unit is used for starting the radio frequency power amplifier;
the first-stage climbing parameter acquisition unit is used for acquiring a preset first band gap reference voltage control word and a first band gap reference voltage regulation step; the first bandgap reference voltage control word is a target bandgap reference voltage of first-stage power ramp, and the first bandgap reference voltage regulation step is a regulation step of the bandgap reference voltage input by the radio frequency amplifier in the power ramp process;
the first-stage climbing control unit is used for adjusting the step according to the first band gap reference voltage control word and the first band gap reference voltage, adjusting the band gap reference voltage input by the radio frequency power amplifier upwards and finishing first-stage power climbing control;
the second-stage climbing parameter acquisition unit is used for acquiring a preset first gain control word and a first gain adjustment step;
and the second-stage climbing control unit is used for upwards adjusting the gain multiple of the radio frequency power amplifier according to the first gain control word and the first gain adjustment step to complete second-stage power climbing control.
5. The signal transmission power control apparatus according to claim 4, further comprising:
and the climbing delay unit is used for waiting for preset climbing delay time after the radio frequency power amplifier is started.
6. A signal transmission power control apparatus, characterized by further comprising:
the second switch control unit is used for turning off the radio frequency power amplifier;
the first-stage slope descending parameter acquisition unit is used for acquiring a preset second gain control word and a second gain adjustment step; the second gain control word refers to a target gain of the radio frequency amplifier in the power ramp-down process, and the second gain adjustment step refers to a gain amplification factor of the radio frequency amplifier in the power ramp-down process;
the first-stage slope reduction control unit is used for adjusting the gain multiple of the radio frequency power amplifier downwards according to the second gain control word and the second gain adjustment step to complete first-stage power slope reduction control;
the second-stage slope descending parameter obtaining unit is used for obtaining a preset second band-gap reference voltage control word and a second band-gap reference voltage adjusting step;
and the secondary power down-slope control unit is used for adjusting the step according to the second band-gap reference voltage control word and the second band-gap reference voltage, and downwards adjusting the band-gap reference voltage input by the radio-frequency power amplifier to complete secondary power down-slope control.
7. A signal transmission power control apparatus comprising a processor, an input device, an output device and a memory, the processor, the input device, the output device and the memory being interconnected, wherein the memory is configured to store application program instructions, and wherein the processor is configured to invoke the application program instructions to perform the method of any of claims 1-2.
8. A computer-readable storage medium, characterized in that the computer storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to perform the method according to any of claims 1-2.
9. A signal transmission power control apparatus comprising a processor, an input device, an output device and a memory, the processor, the input device, the output device and the memory being interconnected, wherein the memory is configured to store application program instructions, and wherein the processor is configured to invoke the application program instructions to perform the method of claim 3.
10. A computer-readable storage medium, characterized in that the computer storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to carry out the method of claim 3.
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| CN201710474566.1A CN107707251B (en) | 2017-06-20 | 2017-06-20 | Signal transmission power control method and device |
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| CN109192127B (en) * | 2018-10-29 | 2022-06-24 | 合肥鑫晟光电科技有限公司 | Time schedule controller, driving method thereof and display device |
| EP4184575A4 (en) * | 2020-08-18 | 2024-01-10 | Huawei Technologies Co., Ltd. | Power amplifier chip and communication device |
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| CN1316843A (en) * | 2000-03-31 | 2001-10-10 | 三菱电机株式会社 | Radio transmitter installation with low-power consumption |
| CN1340934A (en) * | 2000-09-02 | 2002-03-20 | 华为技术有限公司 | Broadband data access circuit and its self-adaptive regulation method of channel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20130024556A (en) * | 2011-08-31 | 2013-03-08 | 삼성전기주식회사 | Power amplifier system |
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| CN1316843A (en) * | 2000-03-31 | 2001-10-10 | 三菱电机株式会社 | Radio transmitter installation with low-power consumption |
| CN1340934A (en) * | 2000-09-02 | 2002-03-20 | 华为技术有限公司 | Broadband data access circuit and its self-adaptive regulation method of channel |
| JP2005269490A (en) * | 2004-03-22 | 2005-09-29 | Matsushita Electric Ind Co Ltd | High frequency power amplifying device and integrated circuit used in the same |
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