CN210958289U - Radio frequency power amplification device and system - Google Patents
Radio frequency power amplification device and system Download PDFInfo
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- CN210958289U CN210958289U CN201922071345.7U CN201922071345U CN210958289U CN 210958289 U CN210958289 U CN 210958289U CN 201922071345 U CN201922071345 U CN 201922071345U CN 210958289 U CN210958289 U CN 210958289U
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Abstract
The present application relates to a radio frequency power amplification device and system. And a microprocessor in the radio frequency power amplification equipment is connected with the input end of the radio frequency power amplification module sequentially through the first peak-to-average ratio detection module and the first coupler and is connected with the output end of the radio frequency power amplification module sequentially through the second peak-to-average ratio detection module and the second coupler. Based on the structure, the microprocessor can acquire the peak-to-average ratio of the radio frequency input signal of the radio frequency power amplification module based on the first coupler and the first peak-to-average ratio detection module, and acquire the peak-to-average ratio of the radio frequency output signal of the radio frequency power amplification module based on the second coupler and the second peak-to-average ratio detection module, so that the power supply voltage of the radio frequency power amplification module can be adjusted according to the two acquired peak-to-average ratios, the radio frequency power amplification module can perform linear amplification output, the self-adaption reduction of the power consumption of equipment is realized, and the communication quality is not influenced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio frequency power amplification apparatus and system.
Background
Currently, information communication technology is rapidly developed, from 2G (2-Generation wireless telecommunications technology, second-Generation mobile phone communication technology) era to large-scale application of 4G (the 4th Generation mobile communication technology, fourth-Generation mobile communication technology), traffic, communication rate and bandwidth borne by a communication network are rapidly increased, and high requirements are put on communication equipment, particularly in the coming 5G (5th-Generation, fifth-Generation mobile communication technology) communication era, all things are interconnected, so that the communication equipment has characteristics of ultra-large bandwidth, ultra-low time delay and the like, and application requirements under different scenes can be met, such as applications of AR (Augmented Reality), automatic driving and the like.
The ultrahigh performance and experience of 5G communication correspondingly bring high power consumption to communication equipment, which means more energy consumption, and meanwhile, the operation cost of operators is further improved. For example, a conventional power amplifier energy saving processing mode depends on a series of cell load statistics and information processing, and sometimes a terminal cannot search a base station, thereby affecting communication quality and causing customer complaints.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a radio frequency power amplifying device and system for solving the problem that the conventional power amplification and energy saving technology does not meet the application requirements of mobile communication.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a radio frequency power amplifying device, including:
a first coupler; the input end of the first coupler is used for connecting the radio frequency input port.
A radio frequency power amplification module; the input end of the radio frequency power amplification module is connected with the through end of the first coupler.
A second coupler; the input end of the second coupler is connected with the output end of the radio frequency power amplification module, and the through end of the second coupler is used for being connected with the radio frequency output port.
A first peak-to-average ratio detection module; the input end of the first peak-to-average ratio detection module is connected with the coupling end of the first coupler.
A second peak-to-average ratio detection module; the input end of the second peak-to-average ratio detection module is connected with the coupling end of the second coupler.
And the microprocessor is respectively connected with the output end of the first peak-to-average ratio detection module, the output end of the second peak-to-average ratio detection module and the control end of the radio frequency power amplification module.
In one embodiment, the rf power amplifying device further includes:
a first power divider; the input end of the first power divider is connected with the coupling end of the first coupler.
The first peak-to-average ratio detection module includes:
a first peak power detection unit; the input end of the first peak power detection unit is connected with the first output end of the first power divider, and the output end of the first peak power detection unit is connected with the microprocessor.
A first mean power detection unit; the input end of the first mean value power detection unit is connected with the second output end of the first power divider; the output end of the first mean value power detection unit is connected with the microprocessor.
In one embodiment, the first power divider is a 3dB bridge; the first coupler is a 10dB directional coupler.
In one embodiment, the rf power amplifying device further includes:
a second power divider; the input end of the second power divider is connected with the coupling end of the second coupler.
The second peak-to-average ratio detection module includes:
a second peak power detection unit; the input end of the second peak power detection unit is connected with the first output end of the second power divider, and the output end of the second peak power detection unit is connected with the microprocessor.
A second mean power detection unit; the input end of the second mean power detection unit is connected with the second output end of the second power divider; the output end of the second mean power detection unit is connected with the microprocessor.
In one embodiment, the rf power amplifying module is an rf predistortion power amplifier.
In one embodiment, the third output terminal of the second power divider is connected to the predistortion unit of the rf predistortion power amplifier.
In one embodiment, the second power divider is a 3-split power divider; the second coupler is a 30dB directional coupler.
In one embodiment, the rf power amplifying device further includes:
an adjustable power supply; the control end of the adjustable power supply is connected with the microprocessor, and the power supply end of the adjustable power supply is connected with the power supply port of the radio frequency power amplification module.
In one embodiment, the microprocessor is provided with a communication port for communicating with an upper computer.
On the other hand, the embodiment of the present application further provides a system, including: the radio frequency power amplifying device and the upper computer connected with the radio frequency power amplifying device.
One of the above technical solutions has the following advantages and beneficial effects:
the microprocessor is connected with the input end of the radio frequency power amplification module sequentially through the first peak-to-average ratio detection module and the first coupler and is connected with the output end of the radio frequency power amplification module sequentially through the second peak-to-average ratio detection module and the second coupler. Based on the structure, the microprocessor can acquire the peak-to-average ratio of the radio frequency input signal of the radio frequency power amplification module based on the first coupler and the first peak-to-average ratio detection module, and acquire the peak-to-average ratio of the radio frequency output signal of the radio frequency power amplification module based on the second coupler and the second peak-to-average ratio detection module, so that the power supply voltage of the radio frequency power amplification module can be adjusted according to the two acquired peak-to-average ratios, the radio frequency power amplification module can perform linear amplification output, the self-adaption reduction of the power consumption of equipment is realized, and the communication quality is not influenced. Based on this, the radio frequency power amplification equipment does not need auxiliary equipment to count service information, can be adaptively adjusted, meets the communication application requirements, and has the advantages of low cost and easy implementation.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a first schematic structural view of a radio frequency power amplifying device in one embodiment;
fig. 2 is a second schematic structural view of a radio frequency power amplifying device in one embodiment;
fig. 3 is a third schematic structural diagram of a radio frequency power amplifying device in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "input", "output", "through", "coupled" and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The power amplifier is used as a main energy consumption device of the communication equipment and accounts for more than one third of the energy consumption of the base station, so that the power amplifier is designed with high efficiency and controlled with high precision, the high energy of the power amplifier is reduced to the minimum, and the power amplifier is the most important means for reducing the energy consumption of the whole communication equipment. Therefore, when the high efficiency technology of power amplification is difficult to improve the efficiency of equipment, accurate power amplification control is particularly important for energy conservation. Aiming at the problem that the traditional technology is not suitable for mobile communication development, the embodiment of the application provides the power amplifier which is flexible to control, low in cost, linear and low in power consumption, can effectively perform self-adaption energy saving, and meets the energy saving requirements of information communication and equipment.
In one embodiment, there is provided a radio frequency power amplifying device, as shown in fig. 1, including:
a first coupler; the input end of the first coupler is used for connecting the radio frequency input port.
A radio frequency power amplification module; the input end of the radio frequency power amplification module is connected with the through end of the first coupler.
A second coupler; the input end of the second coupler is connected with the output end of the radio frequency power amplification module, and the through end of the second coupler is used for being connected with the radio frequency output port.
A first peak-to-average ratio detection module; the input end of the first peak-to-average ratio detection module is connected with the coupling end of the first coupler.
A second peak-to-average ratio detection module; the input end of the second peak-to-average ratio detection module is connected with the coupling end of the second coupler.
And the microprocessor is respectively connected with the output end of the first peak-to-average ratio detection module, the output end of the second peak-to-average ratio detection module and the control end of the radio frequency power amplification module.
Specifically, the radio frequency power amplifying device may include a first coupler, a radio frequency power amplifying module, a first peak-to-average ratio detecting module, a second coupler, a second peak-to-average ratio detecting module, and a microprocessor. The input end of the first coupler is connected with the radio frequency input port, the straight-through end is connected with the input end of the radio frequency power amplification module, and the coupling end is connected with the input end of the first peak-to-average ratio detection module; based on this, the first coupler can be used for acquiring a radio frequency input signal from the radio frequency input port, dividing the radio frequency input signal into two paths of signals and respectively transmitting the two paths of signals to the radio frequency power amplification module and the first peak-to-average ratio detection module; and the radio frequency power amplification module performs power amplification on the acquired radio frequency input signal to obtain a radio frequency output signal. The input end of the second coupler is connected with the output end of the radio frequency power amplification module, the straight-through end is connected with the radio frequency output port, and the coupling end is connected with the input end of the second peak-to-average ratio detection module; based on this, the second coupler can be used for acquiring the radio frequency output signal from the radio frequency power amplification module, dividing the radio frequency output signal into two paths of signals and respectively transmitting the two paths of signals to the radio frequency output port and the second peak-to-average ratio detection module; the radio frequency output port outputs radio frequency output signals to the outside, and power amplification of the radio frequency signals is achieved.
The output end of the first peak-to-average ratio detection module is connected with the microprocessor; based on this, in one example, the first peak-to-average ratio detection module may detect the acquired radio frequency input signal, obtain a first peak-to-average ratio, and send the first peak-to-average ratio to the microprocessor; in another example, the first peak-to-average ratio detection module may detect the acquired radio frequency input signal to obtain a peak power and an average power of the radio frequency input signal, and send the peak power and the average power to the microprocessor, and the microprocessor may further process the peak power and the average power of the radio frequency input signal to obtain the first peak-to-average ratio.
The output end of the second peak-to-average ratio detection module is connected with the microprocessor; based on this, in one example, the second peak-to-average ratio detection module may detect the acquired radio frequency output signal, obtain a second peak-to-average ratio, and send the second peak-to-average ratio to the microprocessor; in another example, the second peak-to-average ratio detection module may detect the acquired radio frequency output signal to obtain a peak power and an average power of the radio frequency output signal, and send the peak power and the average power to the microprocessor, and the microprocessor may further process the peak power and the average power of the radio frequency output signal to obtain the second peak-to-average ratio.
The microprocessor is connected with the control end of the radio frequency amplification power module. Based on this, the microprocessor can adjust the supply voltage of the radio frequency power amplification module according to the first peak-to-average ratio and the second peak-to-average ratio, so that the radio frequency power amplification module performs signal linear amplification output based on the supply voltage. The first peak-to-average ratio is a peak-to-average ratio of the radio frequency input signal, and the second peak-to-average ratio is a peak-to-average ratio of the radio frequency output signal. Optionally, the microprocessor may detect whether a difference between the first peak-to-average ratio and the second peak-to-average ratio falls within a preset threshold; if so, keeping the power supply voltage of the radio frequency power amplification module; if not, configuring a new power supply voltage for the radio frequency power amplification module, or controlling the power supply voltage of the radio frequency power amplification module to rise or fall so as to enable the difference value to fall into a preset threshold. In addition, the microprocessor can detect whether the ratio of the first peak-to-average ratio and the second peak-to-average ratio falls into a preset threshold; if so, keeping the power supply voltage of the radio frequency power amplification module; if not, configuring a new power supply voltage for the radio frequency power amplification module, or controlling the power supply voltage of the radio frequency power amplification module to rise or fall so as to enable the ratio to fall into a preset threshold. Meanwhile, the microprocessor can also obtain the corresponding power supply voltage according to a mapping relation table which is inquired and stored in advance. Based on the structure, the microprocessor can confirm whether the amplification of the radio frequency power amplification module on the radio frequency signal works in a saturation area or not by comparing the peak-to-average ratios at the two ends of the radio frequency power amplification module, and further can judge whether the power supply voltage needs to be adjusted or not, so that the power consumption of the equipment is reduced. The efficiency of the radio frequency power amplification module in a saturated state is highest; when the difference between the two peak-to-average ratios is overlarge, the radio frequency power amplifier is in an oversaturated state; the minimum difference between the two peak-to-average ratios is 0, which represents that the radio frequency power amplification module is in a linear region, voltage can be reduced tentatively until the difference value of the two peak-to-average ratios is within a preset threshold, namely the amplification work of the radio frequency power amplification module on the radio frequency signal is close to a saturation state, and the linearity can meet the requirement. It should be noted that the manner of comparing the first peak-to-average ratio and the second peak-to-average ratio to configure the supply voltage of the rf power amplifying module may also be implemented by using the prior art, and is not limited herein.
It should be noted that the rf power amplifying module may be various types of rf power amplifiers, or mainly includes an rf power amplifier and a peripheral circuit, or includes an rf power amplifier and a power circuit, and is not limited herein. The peak-to-average ratio detection module may be mainly composed of a peak detection circuit and an average detection circuit, or may be composed of an existing detection circuit and a peripheral circuit, which is not specifically limited herein. The microprocessor may control a power conversion circuit or a power supply of the rf power amplifying module to configure a power supply voltage, which is not limited herein. In addition, the microprocessor can also obtain the predistortion coefficient and gain of the radio frequency power amplification module, adjust grid voltage and gain and the like through the control end of the radio frequency power amplification module.
Based on the structure, the microprocessor can obtain the peak-to-average ratio of the signals at the input end and the output end of the radio frequency power amplification module in real time, further adjust the voltage of the radio frequency power amplification module in real time, and realize the self-adaptive adjustment of the power amplifier equipment. According to the embodiment of the application, the power supply voltage of the radio frequency power amplification module can be adjusted according to the two acquired peak-to-average ratios, so that the radio frequency power amplification module performs linear amplification output, the self-adaption reduction of the power consumption of equipment is realized, the statistics of coincidence and information processing are not needed by auxiliary equipment, and the communication quality is not influenced; based on the method, the communication application requirements can be met, and the method has the advantages of low cost and easiness in implementation.
In one embodiment, as shown in fig. 2, the radio frequency power amplifying device further includes:
a first power divider; the input end of the first power divider is connected with the coupling end of the first coupler.
The first peak-to-average ratio detection module includes:
a first peak power detection unit; the input end of the first peak power detection unit is connected with the first output end of the first power divider, and the output end of the first peak power detection unit is connected with the microprocessor.
A first mean power detection unit; the input end of the first mean value power detection unit is connected with the second output end of the first power divider; the output end of the first mean value power detection unit is connected with the microprocessor.
Specifically, the radio frequency power amplifying device further includes a first power divider connected between the first coupler and the first peak-to-average ratio detecting module. The peak-to-average ratio detection module may include a peak power detection unit and an average power detection unit. The coupling end of the first coupler is respectively connected with the first peak power detection unit and the first mean power detection unit through a first power divider; the output end of the first peak power detection unit and the output end of the first mean power detection unit are both connected with the microprocessor. Based on this, the first peak power detection unit can acquire the radio frequency input signal, detect the peak power of the radio frequency input signal and send the peak power to the microprocessor; the first mean power detection unit can acquire the radio frequency input signal, detect the mean power of the radio frequency input signal and send the mean power to the microprocessor.
It should be noted that, the power divider mentioned in the embodiments of the present application may be a power divider or a bridge, and is not limited herein. The peak power detection unit mentioned in the embodiment of the present application may be implemented mainly by a peak detection circuit and a peripheral circuit, and may also be implemented by a peak detection chip, which is not specifically limited herein. The mean value detection unit mentioned in the embodiments of the present application may be implemented mainly by a mean value detection circuit and a peripheral circuit, and may also be implemented by a mean value detection chip, which is not specifically limited herein. According to the embodiment of the application, the peak-to-average ratio detection can be completed through the power divider, the peak power detection unit and the mean power detection unit, so that the self-adaptive adjustment of the power consumption of the equipment is realized.
In one embodiment, as shown in fig. 2, the radio frequency power amplifying device further includes:
a second power divider; the input end of the second power divider is connected with the coupling end of the second coupler.
The second peak-to-average ratio detection module includes:
a second peak power detection unit; the input end of the second peak power detection unit is connected with the first output end of the second power divider, and the output end of the second peak power detection unit is connected with the microprocessor.
A second mean power detection unit; the input end of the second mean power detection unit is connected with the second output end of the second power divider; the output end of the second mean power detection unit is connected with the microprocessor.
Specifically, the radio frequency power amplifying device further includes a second power divider connected between the second coupler and the second peak-to-average ratio detecting module. The peak-to-average ratio detection module may include a peak power detection unit and an average power detection unit. The coupling end of the second coupler is respectively connected with the second peak power detection unit and the second mean power detection unit through a second power divider; the output end of the second peak power detection unit and the output end of the second average power detection unit are both connected with the microprocessor. Based on this, the second peak power detection unit can obtain the radio frequency output signal, detect the peak power of the radio frequency output signal and send to the microprocessor; the second mean power detection unit can acquire the radio frequency output signal, detect the mean power of the radio frequency output signal and send the mean power to the microprocessor.
According to the embodiment of the application, the peak-to-average ratio detection of two ends of the radio frequency power amplification module can be completed through the power divider, the peak power detection unit and the mean power detection unit, so that the self-adaptive adjustment of the power consumption of equipment is realized, and the radio frequency power amplification module is simple in structure, easy to realize and low in cost.
In one embodiment, the microprocessor is configured to calculate a difference between the first peak-to-average ratio and the second peak-to-average ratio and configure the supply voltage based on the difference.
Specifically, the microprocessor may perform a difference between the first peak-to-average ratio and the second peak-to-average ratio, and configure and generate the supply voltage according to the obtained difference, or control the supply voltage to be adjusted in a step-by-step manner, or control the supply voltage to be adjusted in a linear manner. The embodiment of the application can determine the power supply voltage by adopting a mode of calculating the difference of the peak-to-average ratios at two ends of the radio frequency power amplification module, is simple to implement, low in development cost and good in implementation effect, and can adjust the power supply voltage of the radio frequency power amplification module in a real-time self-adaptive manner, thereby meeting the requirements of communication application and energy saving of equipment.
In one embodiment, the rf power amplifying module may be an rf predistortion power amplifier.
In one embodiment, the third output terminal of the second power divider is connected to the predistortion unit of the rf power amplification module.
Specifically, the third output end of the second power divider may be connected to the predistortion unit of the rf power amplification module; based on the structure, the second power divider can be used for outputting a feedback signal to the predistortion unit, so that the radio frequency power amplification module can conveniently perform gain adjustment and the like.
In one example, the step of implementing adaptive power consumption reduction by the radio frequency power amplifying device comprises:
1) the radio frequency signal is input from an RFin port, passes through a first coupler, the radio frequency signal output from a coupling end enters the input end of a first power divider, and the radio frequency signal output from a straight-through end of the coupler enters a radio frequency power amplification module; the radio frequency signal enters the second coupler after passing through the power amplification module, the radio frequency main signal is output to the RFout port from the straight-through end of the second coupler, and the radio frequency signal passing through the coupling end of the second coupler is sent to the input end of the second power divider.
2) The first power divider divides the radio frequency signal from the coupling end of the first coupler into two paths, wherein one path of radio frequency signal enters the first peak power detection unit, and the other path of radio frequency signal enters the first mean power detection unit.
3) The second power divider divides the radio frequency signal from the second coupler into three paths, wherein one path of radio frequency signal enters the second peak power detection unit, the other path of radio frequency signal enters the second mean power detection unit, and the third path of radio frequency signal serves as a feedback signal and is sent to a predistortion unit in the radio frequency power amplification module.
4) The first peak power detection unit and the first average power detection unit respectively convert the detected radio frequency signal information into a voltage signal form and send the voltage signal form to the microprocessor, and the microprocessor calculates the ratio PAR1(dB) of the peak power to the average power.
5) The second peak power detection unit and the second average power detection unit respectively convert the detected radio frequency signal information into a voltage signal form and send the voltage signal form to the microprocessor, and the microprocessor calculates the ratio PAR2(dB) of the peak power to the average power.
6) The microprocessor compares PAR1(dB) with PAR2(dB), outputs a power supply voltage value to the adjustable power supply, and enables the adjustable power supply to output proper voltage to supply power for the power amplifier.
In one embodiment, the first power divider is a 3dB bridge, as shown in fig. 3.
Specifically, the rf signal output by the coupling end of the first coupler may be divided into two paths of signals by the 3dB bridge, and the two paths of signals are respectively transmitted to the first peak detection unit and the first average detection unit.
In one embodiment, as shown in fig. 3, the second power splitter is a 3-split power splitter.
Specifically, the radio frequency signal output by the coupling end of the second coupler may be divided into three signals by the 3-level power divider, where the first signal is transmitted to the second peak detection unit, the second signal is transmitted to the second mean detection unit, and the third signal is transmitted to the predistortion unit.
In one embodiment, the first coupler is a 10dB directional coupler, as shown in fig. 3. It should be noted that in the embodiment of the present application, the type and parameters of the coupler may be selected according to actual power amplifier requirements.
In one embodiment, the second coupler is a 30dB directional coupler, as shown in fig. 3.
In one embodiment, as shown in fig. 3, the radio frequency power amplifying device further includes:
an adjustable power supply; the control end of the adjustable power supply is connected with the microprocessor, and the power supply end of the adjustable power supply is connected with the power supply port of the radio frequency power amplification module.
Specifically, the radio frequency power amplification device further comprises an adjustable power supply connected between the microprocessor and the radio frequency power amplification module; the microprocessor sends the power supply voltage signal to the adjustable power supply so that the adjustable power supply provides corresponding power supply voltage for the radio frequency power amplification module, and the self-adaptive adjustment of the power is completed. Illustratively, the adjustable power supply may be a +28V (volt) to +48V continuously adjustable power supply; in addition, parameters such as the power supply range, the precision and the adjustment mode of the adjustable power supply can be selected according to the actual application requirements, and are not specifically limited here.
In one embodiment, the microprocessor is provided with a communication port for communicating with an upper computer.
Specifically, the microprocessor can communicate with the upper computer, so that the upper computer can conveniently configure, modify and update functions and parameters of the radio frequency power amplification equipment.
In one example, an adaptive power down radio frequency power amplification device may be as shown in fig. 3. The 10dB coupler, the radio frequency predistortion power amplifier, the 30dB directional coupler and the 3 equal-division power divider are sequentially connected; the output end of the 3 equal-division power divider is respectively connected with the radio frequency predistortion power amplifier, the second peak power detection unit and the second mean power detection unit; the coupling end of the 10dB directional coupler is connected with the input end of the 3dB bridge; two output ends of the 3dB bridge are respectively connected with the first peak power detection unit and the first mean power detection unit; the microprocessor is respectively connected with a radio frequency predistortion power amplifier, a + 28V- +48V continuous adjustable power supply, a first peak power detection unit, a first average power detection unit, a second peak power detection unit and a second average power detection unit; and the microprocessor is provided with a communication port with the upper computer. Based on the structure, the process of the radio frequency power amplification device for realizing the self-adaptive power consumption reduction can be as follows:
1)2.6GHz (gigahertz) radio frequency signals are divided into two paths of signals through a 10dB coupler, main signals enter a radio frequency predistortion power amplifier with the gain of 46dB to obtain linearly amplified radio frequency signals, and the radio frequency signals pass through a 30dB coupler and then are output through a radio frequency terminal.
2) The 10dB coupler samples input radio frequency signals and divides the input radio frequency signals into two paths through a 3dB bridge, wherein one path of the input radio frequency signals is sent to the first peak power detection unit, and the other path of the input radio frequency signals is sent to the first mean power detection unit.
3) The first peak power detection unit and the first average power detection unit both feed back detected information to the microprocessor in the form of voltage signals. Illustratively, the microprocessor obtains an input average power (first average power) of the input signal as-3 dBm, and an input peak power (first peak power) as 5 dBm; thus, the microprocessor calculates the input peak-to-average ratio PAR1 to 8 dB.
4) The 30dB coupler samples the output radio frequency signal and divides the signal into three paths by a 3-equal power divider, one path is sent to a second peak power detection unit, the other path is sent to a second mean power detection unit, and the last path is sent to a radio frequency pre-distortion power amplifier as a feedback signal.
5) The second peak power detection unit and the second average power detection unit both feed back the detected information to the microprocessor in the form of voltage signals. Illustratively, the microprocessor obtains an output average power (second average power) of 43dBm, an output peak power (second peak power) of 51dBm, and an output peak-to-average ratio PAR2 of 8 dB.
6) And (3) judging that the output average power is within a preset power amplification range (40-45.5 dBm) by the microprocessor, if so, entering the next step, and otherwise, returning to the step 2).
7) The microprocessor calculates the PAR1-PAR2 values.
8) Here, PAR1-PAR2 is less than the preset threshold of 0.5dB, and the microprocessor step-reduces the output voltage of the continuously adjustable power supply by 0.5V until PAR1-PAR2 is 0.5 dB; meanwhile, the gain of the power amplifier is kept at 46dB by adjusting the internal ATT (attenuator or attenuation circuit) of the power amplifier.
9) If the output peak power is detected to be 50.2dBm in the step 5), namely the PAR1-PAR2 is larger than the preset threshold by 0.5dB, the microprocessor reads the output average power (second average power) of the power amplifier and controls the continuously adjustable power supply to increase the voltage of the continuously adjustable power supply until the PAR1-PAR2 is 0.5 dB; meanwhile, the gain of the power amplifier is kept at 46dB by adjusting the ATT in the power amplifier.
10) And the microprocessor judges whether the predistortion coefficient of the power amplifier is within the error range, if so, the voltage output value of the adjustable power supply is ensured, and the step 12) is carried out, otherwise, the step 11) is carried out.
11) The output voltage of the adjustable power supply is adjusted until the predistortion coefficient is larger than 45 and smaller than 50, so that the linearity of the power amplifier can be ensured on the basis of reducing power consumption.
12) At the moment, the power amplifier works in a near-saturation state, the power amplifier enters a high-efficiency area, and communication signals are linearly amplified and output.
It should be noted that the above processes of calculating the peak-to-average ratio, calculating the difference between the peak-to-average ratios, adjusting the voltage, controlling the gain, and obtaining and determining the predistortion coefficients can all be implemented by using the prior art.
In one embodiment, a system is provided, which includes the radio frequency power amplifying device as described above, and an upper computer connected to the radio frequency power amplifying device.
Specifically, the upper computer is matched with the radio frequency power amplification device to realize configuration, control, parameter modification, data monitoring, data storage and the like of the power amplifier.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A radio frequency power amplification device, comprising:
a first coupler; the input end of the first coupler is used for connecting a radio frequency input port;
a radio frequency power amplification module; the input end of the radio frequency power amplification module is connected with the through end of the first coupler;
a second coupler; the input end of the second coupler is connected with the output end of the radio frequency power amplification module, and the through end of the second coupler is used for connecting a radio frequency output port;
a first peak-to-average ratio detection module; the input end of the first peak-to-average ratio detection module is connected with the coupling end of the first coupler;
a second peak-to-average ratio detection module; the input end of the second peak-to-average ratio detection module is connected with the coupling end of the second coupler;
and the microprocessor is respectively connected with the output end of the first peak-to-average ratio detection module, the output end of the second peak-to-average ratio detection module and the control end of the radio frequency power amplification module.
2. The radio frequency power amplification device of claim 1, further comprising:
a first power divider; the input end of the first power divider is connected with the coupling end of the first coupler;
the first peak-to-average ratio detection module includes:
a first peak power detection unit; the input end of the first peak power detection unit is connected with the first output end of the first power divider, and the output end of the first peak power detection unit is connected with the microprocessor;
a first mean power detection unit; the input end of the first mean value power detection unit is connected with the second output end of the first power divider; and the output end of the first mean value power detection unit is connected with the microprocessor.
3. The radio frequency power amplification device of claim 2, wherein the first power divider is a 3dB bridge; the first coupler is a 10dB directional coupler.
4. The radio frequency power amplification device of claim 1, further comprising:
a second power divider; the input end of the second power divider is connected with the coupling end of the second coupler;
the second peak-to-average ratio detection module includes:
a second peak power detection unit; the input end of the second peak power detection unit is connected with the first output end of the second power divider, and the output end of the second peak power detection unit is connected with the microprocessor;
a second mean power detection unit; the input end of the second average power detection unit is connected with the second output end of the second power divider; and the output end of the second mean power detection unit is connected with the microprocessor.
5. The radio frequency power amplification device of claim 4, wherein the radio frequency power amplification module is a radio frequency pre-distortion power amplifier.
6. The radio frequency power amplification device according to claim 5, wherein the third output terminal of the second power divider is connected to a predistortion unit of the radio frequency predistortion power amplifier.
7. The radio frequency power amplification device of claim 6, wherein the second power divider is a 3-equal division power divider; the second coupler is a 30dB directional coupler.
8. The radio frequency power amplification device according to any one of claims 1 to 7, further comprising:
an adjustable power supply; the control end of the adjustable power supply is connected with the microprocessor, and the power supply end of the adjustable power supply is connected with the power supply port of the radio frequency power amplification module.
9. The radio frequency power amplification device of any one of claims 1 to 7, wherein the microprocessor is provided with a communication port for communicating with an upper computer.
10. A system, comprising: the radio frequency power amplification device of any one of claims 1 to 9, and an upper computer connected to the radio frequency power amplification device.
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| CN201922071345.7U CN210958289U (en) | 2019-11-26 | 2019-11-26 | Radio frequency power amplification device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737609A (en) * | 2020-12-28 | 2021-04-30 | Oppo广东移动通信有限公司 | Radio frequency system, signal power control method, communication device, and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737609A (en) * | 2020-12-28 | 2021-04-30 | Oppo广东移动通信有限公司 | Radio frequency system, signal power control method, communication device, and storage medium |
| CN112737609B (en) * | 2020-12-28 | 2022-05-17 | Oppo广东移动通信有限公司 | Radio frequency system, signal power control method, communication device, and storage medium |
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Address after: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee before: Comba Telecom System (China) Ltd. |