CN117639684A - Broadband power amplifier, method of amplifying broadband power, and readable storage medium - Google Patents
Broadband power amplifier, method of amplifying broadband power, and readable storage medium Download PDFInfo
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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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
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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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
- H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
- H03F1/07—Doherty-type amplifiers
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- H—ELECTRICITY
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- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/42—Modifications of amplifiers to extend the bandwidth
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- H—ELECTRICITY
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- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
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- 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
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
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Abstract
The application provides a broadband power amplifier, a method of amplifying broadband power, an electronic device, and a computer-readable storage medium. The broadband power amplifier includes: a first balanced power amplifier for receiving a first radio frequency signal; the control input end of the second balanced power amplifier is connected with the output end of the first balanced power amplifier; wherein, in case of load traction, the first balanced power amplifier causes the second balanced power amplifier to perform a plurality of power rollbacks. According to the scheme of the embodiment of the application, the power backoff efficiency can be improved.
Description
Technical Field
Embodiments of the present disclosure relate to the field of signal processing technologies, but are not limited to, and in particular, to a broadband power amplifier, a method for amplifying broadband power, an electronic device, and a computer readable storage medium.
Background
With the 5G commercial landing, the available frequency spectrums of all operators are more and more, if a single-frequency base station is adopted, the more the number of the base stations is needed for realizing the coverage of all frequency bands of a single site, so that the deployment and operation cost is increased; the broadband and multi-band power amplifier can effectively solve the problem, and under the condition that the bandwidth is wide enough, the operation of all available frequency bands can be realized by adopting one base station; the load modulation balance amplifier is a framework with broadband application potential, takes an electric bridge as a core, adopts a double-input mode, and modulates the load of a balance path by controlling the amplitude and the phase of a control path signal, so that wider bandwidth is ensured; however, the conventional load modulation balanced amplifier architecture can only implement load modulation once for a balanced circuit, and only has one efficiency peak point in a rollback area, so that rollback efficiency is low.
Disclosure of Invention
The embodiment of the application provides a broadband power amplifier, a broadband power amplifying method, electronic equipment and a computer readable storage medium, which can improve the power rollback efficiency.
In a first aspect, embodiments of the present application provide a wideband power amplifier, including:
a first balanced power amplifier for receiving a first radio frequency signal;
the control input end of the second balanced power amplifier is connected with the output end of the first balanced power amplifier; in the case of load pulling, the first balanced power amplifier causes the second balanced power amplifier to implement multiple power rollbacks.
In a second aspect, embodiments of the present application further provide a method for amplifying broadband power, applied to a broadband power amplifier as described above, the method including:
acquiring the amplitude of the second radio frequency signal, and triggering the second balanced power amplifier to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal meets the trigger starting condition of the second balanced power amplifier;
and triggering the first balanced power amplifier to amplify the first radio frequency signal under the condition that the second balanced power amplifier reaches a first efficiency point, so that the first balanced power amplifier performs first active load traction on the second balanced power amplifier, and the second balanced power amplifier performs multiple power rollbacks.
In a third aspect, embodiments of the present application further provide a method for amplifying broadband power, applied to a broadband power amplifier as described above, where the first power amplifier, the second power amplifier, the third power amplifier, and the fourth power amplifier are provided with different gate trigger voltages, the method includes:
acquiring the amplitude of a second radio frequency signal, and enabling the third power amplifier and the fourth power amplifier to start to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal is larger than the gate trigger voltage of the third power amplifier and the gate trigger voltage of the fourth power amplifier;
causing the first power amplifier to start up to perform a second active load pulling on the third and fourth power amplifiers if the third and fourth power amplifiers reach a second point of efficiency;
and under the condition that the first power amplifier reaches a third efficiency point, enabling the second power amplifier to start to carry out third active load traction on the first power amplifier until the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier all reach saturated output states.
In a fourth aspect, the embodiments of the present application further provide a method for amplifying broadband power, which is applied to the broadband power amplifier as described above, where the first power amplifier, the second power amplifier, the third power amplifier, and the fourth power amplifier are provided with different gate trigger voltages, and the method includes:
acquiring the amplitude of a second radio frequency signal, and enabling the third power amplifier to start to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal is larger than the gate trigger voltage of the third power amplifier;
causing the first power amplifier to start up to fourth active load traction on the third power amplifier if the third power amplifier reaches a fourth efficiency point;
and when the first power amplifier reaches a fifth efficiency point, enabling the second power amplifier and the fourth power amplifier to carry out fifth active load traction on the first power amplifier and the third power amplifier until the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier all reach a saturated output state.
In a fifth aspect, embodiments of the present application further provide an electronic device, including one of:
a wideband power amplifier as described above; or alternatively, the first and second heat exchangers may be,
a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of amplifying broadband power as described above when executing the computer program.
In a sixth aspect, embodiments of the present application further provide a computer-readable storage medium storing computer-executable instructions for performing a method of amplifying broadband power as described above.
The embodiment of the application comprises the following steps: the broadband power amplifier comprises a first balanced power amplifier and a second balanced power amplifier, wherein the first balanced power amplifier is used for receiving a first radio frequency signal; the second balanced power amplifier is used for receiving a second radio frequency signal, the control input end of the second balanced power amplifier is connected with the output end of the first balanced power amplifier, and under the condition of load traction, the first balanced power amplifier enables the second balanced power amplifier to reach a plurality of peak efficiency points, multiple power rollbacks are carried out, and the rollback efficiency of power is improved.
Drawings
FIG. 1 is a schematic diagram of an architecture of a wideband power amplifier provided in one embodiment of the present application;
FIG. 2 is a schematic diagram of a broadband power amplifier architecture according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a broadband power amplifier architecture according to another embodiment of the present application;
FIG. 4 is a schematic diagram of a broadband power amplifier architecture according to another embodiment of the present application;
FIG. 5 is a schematic diagram of a broadband power amplifier architecture according to another embodiment of the present application;
FIG. 6 is a flow chart of a method of amplifying wideband power provided by one embodiment of the present application;
FIG. 7 is a flow chart of a method of amplifying wideband power provided in another embodiment of the present application;
FIG. 8 is a flow chart of a method of amplifying wideband power provided in another embodiment of the present application;
FIG. 9 is a graph comparing efficiency of a wideband power amplifier and a conventional load balancing power amplifier provided in one embodiment of the present application;
fig. 10 is a schematic diagram of the configuration of an electronic device provided in one embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The application provides a broadband power amplifier, a method for amplifying broadband power, an electronic device and a computer readable storage medium, wherein the broadband power amplifier comprises a first balanced power amplifier and a second balanced power amplifier, and the first balanced power amplifier is used for receiving a first radio frequency signal; the second balanced power amplifier is used for receiving a second radio frequency signal, the control input end of the second balanced power amplifier is connected with the output end of the first balanced power amplifier, and under the condition of load traction, the first balanced power amplifier enables the second balanced power amplifier to reach a plurality of peak efficiency points, multiple power rollbacks are carried out, and the rollback efficiency of power is improved.
Embodiments of the present application are further described below with reference to the accompanying drawings.
As shown in fig. 1, fig. 1 is a wideband power amplifier provided in one embodiment of the present application, the wideband power amplifier including a first balanced power amplifier 100 and a second balanced power amplifier 200, wherein the first power amplifier 100 is configured to receive a first radio frequency signal; the second power amplifier 200 is configured to receive a second radio frequency signal, and a control input terminal of the second balanced power amplifier 200 is connected to an output terminal of the first balanced power amplifier 100; in the case of load traction, the first balanced power amplifier causes the second balanced power amplifier to implement multiple power rollbacks.
In one embodiment of the present application, the broadband power amplifier includes at least a first balanced power amplifier 100 and a second balanced power amplifier 200; the first balanced power amplifier 100 is configured to receive a first radio frequency signal, the second power amplifier 200 is configured to receive a second radio frequency signal, and a control input end of the second balanced power amplifier 200 is connected to an output end of the first balanced power amplifier 100, so that the first balanced power amplifier 100 can implement load traction on the second balanced power amplifier 200, and the first balanced power amplifier 100 enables the second balanced power amplifier 200 to reach a plurality of peak efficiency points, implements multiple power rollbacks, and improves power rollback efficiency.
It should be noted that the first balanced power amplifier 100 and the second balanced power amplifier 200 are only used to distinguish between different balanced power amplifiers, so that the following description of the embodiments will be clearly performed, and the present invention is not intended to represent that they are different types of balanced power amplifiers, and they may have the same architecture.
In one embodiment of the present application, the first balanced power amplifier 100 and the second balanced power amplifier 200 may each include two quadrature couplers and two power amplifiers disposed between the two quadrature couplers. A quadrature coupler refers to a coupler that can provide signals with specific amplitude and quadrature phase for two output ports, and uses a waveguide as a transmission line to transmit signals; the function of the orthogonal coupler is to distribute one-path signals to multiple paths and isolate the mutual influence of the front stage and the rear stage; the quadrature coupler comprises four ports, namely an input port, an output port, a coupling port and an isolation port. The degree of coupling, which is the ratio of the power of the input port to the power of the coupled port, and the insertion loss, which is defined as the ratio of the power of the output port to the power of the input port of the coupler, are two main indicators of a quadrature coupler. The power amplifier is a main part in a transmitting system, in a front-stage circuit of the transmitter, the power of a radio frequency signal generated by a modulation oscillating circuit is very small, and the radio frequency signal needs to be amplified through a series of amplifying stages, including a buffer stage, an intermediate amplifying stage and a final power amplifying stage, so that the radio frequency signal can be fed to an antenna to radiate after enough radio frequency power is obtained; in order to obtain a sufficiently large radio frequency output power, a power amplifier must be employed.
It should be noted that the first rf signal and the second rf signal merely distinguish the rf signals, so that the following description is a powerful development, and should not be considered as different types of signals. The radio frequency signal is modulated and has electric waves with a certain transmitting frequency; when the electromagnetic wave frequency is lower than 100kHz, the electromagnetic wave can be absorbed by the ground surface, effective transmission cannot be formed, and once the electromagnetic wave frequency is higher than 100kHz, the electromagnetic wave can propagate in the air and is reflected by an ionized layer at the outer edge of an atmosphere layer, so that long-distance transmission capability is formed.
It is noted that the wideband power amplifier may be applied to a high-power wideband remote radio unit (Radio Remote Unit, RRU) base station to amplify the power of the radio frequency signal so as to facilitate subsequent transmission of the communication signal.
Notably, power backoff is a common technique for radio frequency power amplification; the power back-off method is to back-off the input power of the power amplifier by 6-10 decibels from a 1dB compression point (equivalent to the critical point of the linear region and the nonlinear region of the amplifier) and work at a level far smaller than the 1dB compression point, so that the power amplifier is far away from the saturation region and performs linear working region, thereby improving the third-order intermodulation coefficient of the power amplifier, and generally, when the fundamental wave power is reduced by 1dB, the third-order intermodulation distortion is improved by 2dB. The power backoff method is simple and easy to implement, does not require any additional equipment, and is an effective method for improving the linearity of the amplifier.
As shown in fig. 2, in one embodiment of the present application, the first balanced power amplifier 100 includes a first quadrature coupler 110, a second quadrature coupler 120, a first power amplifier 210, and a second power amplifier 220, an output terminal of the first quadrature coupler 110 is connected to an input terminal of the first power amplifier 210, a coupling terminal of the first quadrature coupler 110 is connected to an input terminal of the second power amplifier 220, an output terminal of the first power amplifier 210 is connected to an input terminal of the second quadrature coupler 120, an output terminal of the second power amplifier 220 is connected to a coupling terminal of the second quadrature coupler 120, and an output terminal of the second quadrature coupler 120 is connected to the second balanced power amplifier 200.
In one embodiment of the present application, the first balanced power amplifier 100 includes a first quadrature coupler 110, a second quadrature coupler 120, a first power amplifier 210, and a second power amplifier 220; wherein the input of the first quadrature coupler may be configured to receive a first radio frequency signal; the output end of the first quadrature coupler 110 is connected with the input end of the first power amplifier 210, so that the signal output by the output end of the first quadrature coupler 110 can be transmitted to the first power amplifier 210 for power amplification; the coupling end of the first quadrature coupler 110 is connected with the input end of the second power amplifier 220, so that the signal output by the coupling end of the first quadrature coupler 110 can be subjected to power amplification processing through the second power amplifier 220; the output end of the first power amplifier 210 is connected with the input end of the second quadrature coupler 120, the output end of the second power amplifier 220 is connected with the coupling end of the second quadrature coupler 120, and active load traction is formed between the first power amplifier 210 and the second power amplifier 220 through the first quadrature coupler 110 and the second quadrature coupler 120; the output end of the second quadrature coupler 120 is connected to the second balanced power amplifier 200, so that the output signal of the second quadrature coupler 120 can be pulled as an active load of the second balanced power amplifier 200, thereby further improving the efficiency of power backoff.
It is noted that the first quadrature coupler 110 and the second quadrature coupler 120 each include four ports, i.e., an input port, an output port, a coupled port, and an isolated port, which may be denoted by the numbers 1 to 4, and the characteristics to be satisfied by the respective ports are as follows:
in the case where the 1, 2, 3 and 4 ports are all matched, each port is not reflective, i.e. there is:
S 11 ＝S 22 ＝S 33 ＝S 44 ＝0
wherein, the S parameter is generally used for describing a port network working at high frequency similar to radio frequency and microwave frequency, and the expression mode of the S parameter is various; in mathematical expression, the matrix is in a matrix form, and each numerical value in the matrix represents a certain physical meaning. Illustratively, S11 represents the input reflection coefficient in the case of output termination matching, commonly referred to as return loss, and s11=0 in the case of no transmission.
Under the condition that all ports are matched, the 1 port and the 2 port and the 3 port and the 4 port are isolated from each other, namely:
S 12 ＝S 34 ＝0
wherein S12 represents the reverse transmission gain of the signal from the 2 port into the output from the 1 port; s34 indicates that the signal enters the reverse transmission gain output from the 3 port from the 4 port.
3-port to 1, 2-port, or 4-port to 1, 2-port power includes a form of equal or unequal division; in the case that the 3-port to 1, 2-port or 4-port to 1, 2-port power is in the equal division form, there are:
in the case that the 3-port to 1, 2-port, or 4-port to 1, 2-port power is in a non-uniform form, there are:
wherein alpha represents |S 13 I and S 23 The magnitude of the modulus of |, β represents |s 14 I and S 24 The magnitude of the modulus of i; and both are required to satisfy alpha 2 +β 2 ＝1。
When signals enter the 1 port and the 2 port from the 3 port, the phase difference is 90 degrees; the phase difference between the phase of the 4-port entering 1 and the phase of the 2-port entering 2-port is 90 DEG, namely:
thereby obtaining the S matrix which needs to be satisfied by four ports as
Wherein alpha is 2 +β 2 ＝1。
As shown in fig. 2, in one embodiment of the present application, the second balanced power amplifier 200 includes a third quadrature coupler 410, a fourth quadrature coupler 420, a third power amplifier 510, and a fourth power amplifier 520, where an input terminal of the third quadrature coupler 410 is configured to receive the second radio frequency signal, an output terminal of the third quadrature coupler 410 is connected to an input terminal of the third power amplifier 510, a coupling terminal of the third quadrature coupler 410 is connected to an input terminal of the fourth power amplifier 520, an output terminal of the third power amplifier 510 is connected to an input terminal of the fourth quadrature coupler 420, an output terminal of the fourth power amplifier 520 is connected to a coupling terminal of the fourth quadrature coupler 420, and an isolation terminal of the fourth quadrature coupler 420 is connected to an output terminal of the first balanced power amplifier 100.
In one embodiment of the present application, the second balanced power amplifier 200 includes a third quadrature coupler 410, a fourth quadrature coupler 420, a third power amplifier 510, and a fourth power amplifier 520; wherein an input of the third quadrature coupler 410 may be used to receive a second radio frequency signal; the output end of the third quadrature coupler 410 is connected with the input end of the third power amplifier 510, so that the signal output by the output end of the third quadrature coupler 410 can be transmitted to the third power amplifier 510 for power amplification; the coupling end of the third quadrature coupler 410 is connected with the input end of the fourth power amplifier 520, so that the signal output by the coupling end of the third quadrature coupler 410 can be subjected to power amplification processing through the fourth power amplifier 520; the output end of the third power amplifier 510 is connected with the input end of the fourth quadrature coupler 420, the output end of the fourth power amplifier 520 is connected with the coupling end of the fourth quadrature coupler 420, and active load traction is formed between the third power amplifier 510 and the fourth power amplifier 520 through the third quadrature coupler 410 and the fourth quadrature coupler 420; the isolation end of the fourth quadrature coupler 420 is connected to the output end of the first balanced power amplifier 100, so that the output signal of the first balanced power amplifier 100 can be pulled as the active load of the second balanced power amplifier 200, thereby improving the efficiency of power backoff. The isolation end of the fourth quadrature coupler is the control input end of the second balanced power amplifier.
It is noted that the third and fourth quadrature couplers 410 and 420 in the embodiments of the present application also satisfy the characteristics of the first and second quadrature couplers 110 and 120.
As shown in fig. 2, the first balanced power amplifier 100 further includes a resonant circuit 300, and the resonant circuit 300 is connected to the isolated end of the second quadrature coupler 120.
In some embodiments of the present application, the resonant circuit 300 is a circuit structure composed of a resistor, an inductor and a capacitor, and the resonant circuit 300 has two general composition structures, namely a series type and a parallel type, and can be used as a harmonic oscillator, a band-pass filter or a band-stop filter; the resonant circuit 300 is in effect a second order circuit. The resonant circuit 300 is accessed to the isolation port of the second quadrature coupler 120, so that an active load traction can be formed between the first power amplifier 210 and the second power amplifier 220, and the improvement of the rollback efficiency is realized.
As shown in fig. 3, in one embodiment of the present application, the wideband power amplifier further includes a fifth power amplifier 600, an input terminal of the fifth power amplifier 600 is configured to receive the third radio frequency signal, and an output terminal of the fifth power amplifier 600 is connected to the isolation terminal of the second quadrature coupler 120.
In some embodiments of the present application, the fifth power amplifier 600 may receive the third radio frequency signal, amplify the third radio frequency signal, and input the amplified signal to the second quadrature coupler 120, so as to implement active load traction for the first power amplifier 210 and the second power amplifier 220; through the mode, the number of the power amplification tubes is increased, so that the power grade of the broadband power amplifier is improved, a more complex load traction effect can be realized, and the power rollback efficiency is improved.
As shown in fig. 4, in one embodiment of the present application, the wideband power amplifier further includes a third balanced power amplifier, where the third balanced power amplifier includes a fifth quadrature coupler 710, a sixth quadrature coupler 720, a sixth power amplifier 810, and a seventh power amplifier 820, an input of the fifth quadrature coupler 710 is configured to receive the fourth radio frequency signal, an output of the fifth quadrature coupler 710 is connected to an input of the sixth power amplifier 810, a coupling of the fifth quadrature coupler 710 is connected to an input of the seventh power amplifier 820, an output of the sixth power amplifier 810 is connected to an input of the sixth quadrature coupler 720, an output of the seventh power amplifier 820 is connected to a coupling of the sixth quadrature coupler 720, and an isolation of the sixth quadrature coupler 720 is connected to an output of the fourth quadrature coupler 420.
In some embodiments of the present application, the third balanced power amplifier includes a fifth quadrature coupler 710, a sixth quadrature coupler 720, a sixth power amplifier 810, and a seventh power amplifier 820; wherein an input of the fifth quadrature coupler 710 may be configured to receive a fourth radio frequency signal; the output end of the fifth quadrature coupler 710 is connected to the input end of the sixth power amplifier 810, so that the signal output from the output end of the fifth quadrature coupler 710 can be transmitted to the sixth power amplifier 810 for power amplification; the coupling end of the fifth quadrature coupler 710 is connected to the input end of the seventh power amplifier 820, so that the signal output from the coupling end of the fifth quadrature coupler 710 can be power amplified by the seventh power amplifier 820; an output end of the sixth power amplifier 810 is connected with an input end of the fourth quadrature coupler 420, an output end of the seventh power amplifier 820 is connected with a coupling end of the fourth quadrature coupler 420, and active load traction is formed between the sixth power amplifier 810 and the seventh power amplifier 820 through the fifth quadrature coupler 710 and the fourth quadrature coupler 420; the isolation end of the sixth quadrature coupler 720 is connected to the output end of the fourth quadrature coupler 420, so that the output signal of the fourth quadrature coupler 420 can be used as the active load traction of the third balanced power amplifier, thereby improving the power backoff efficiency; the power capacity of the broadband power amplifier is further improved by adding a third balanced power amplifier.
As shown in fig. 5, in one embodiment of the present application, the first balanced power amplifier 100 further includes a seventh quadrature coupler 910, a phase compensation module 920, and an eighth power amplifier 930, where an input end of the seventh quadrature coupler 910 is configured to receive the first radio frequency signal, an output end of the seventh quadrature coupler 910 is connected to an input end of the phase compensation module 920, an output end of the phase compensation module 920 is connected to an input end of the eighth power amplifier 930, an output end of the eighth power amplifier 930 is connected to an isolated end of the second quadrature coupler 120, and a coupling end of the seventh quadrature coupler 910 is connected to an input end of the first quadrature coupler 110.
In some embodiments of the present application, the three-port input is changed to a two-port input while active load pulling for the first power amplifier 210, the second power amplifier 220, the third power amplifier 510, and the fourth power amplifier 520 is achieved; the phase compensation module 920 may be a phase delay line, a band-pass filter, or other circuit structures with phase compensation function; in the method for realizing phase compensation, as for the phase compensation line in the form of a microstrip line, the microstrip line has dispersion characteristics, and the same section of microstrip line has different phase delay characteristics at different frequency points, so that the compensation of different frequency points is realized; for the band-pass filter, the filter with a specific order can be constructed according to the phase delay difference required by different frequency points of the bandwidth working architecture, so that the compensation of different frequency points is realized.
As shown in fig. 6, fig. 6 is a flowchart of a method for amplifying wideband power according to an embodiment of the present application, which is applied to the wideband power amplifier as described above, and includes, but is not limited to, step S100 and step S200:
step S100, acquiring the amplitude of a second radio frequency signal, and triggering the second balanced power amplifier to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal meets the triggering starting condition of the second balanced power amplifier;
step S200, triggering the first balanced power amplifier to amplify the first radio frequency signal when the second balanced power amplifier reaches the first efficiency point, so that the first balanced power amplifier performs first active load traction on the second balanced power amplifier, and the second balanced power amplifier performs multiple power rollbacks.
In some embodiments of the present application, firstly, the amplitude of the second radio frequency signal is obtained, and when the amplitude of the second radio frequency signal meets the trigger starting condition of the second balanced power amplifier, the second balanced power amplifier is triggered to amplify the second radio frequency signal; and then under the condition that the second balanced power amplifier reaches a first efficiency point, triggering the first balanced power amplifier to amplify the first radio frequency signal, so that the first balanced power amplifier performs first active load traction on the second balanced power amplifier, the second balanced power amplifier can reach a plurality of peak efficiency points, the second balanced power amplifier can perform power rollback for a plurality of times, and the power rollback efficiency is improved.
It is noted that, when the amplitude of the second radio frequency signal meets the trigger starting condition of the second balanced power amplifier, the second balanced power amplifier starts to amplify the second radio frequency signal; for example, a trigger voltage threshold may be set in the second balanced power amplifier, which triggers the start-up only if the amplitude of the second radio frequency signal is greater than the trigger voltage threshold.
As shown in fig. 7, fig. 7 is a flowchart of a method for amplifying broadband power according to an embodiment of the present application, which is applied to the broadband power amplifier described above, where the first power amplifier, the second power amplifier, the third power amplifier, and the fourth power amplifier are provided with different gate trigger voltages, the method includes, but is not limited to, step S300, step S400, and step S500:
step S300, acquiring the amplitude of a second radio frequency signal, and enabling the third power amplifier and the fourth power amplifier to start to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal is larger than the gate trigger voltage of the third power amplifier and the gate trigger voltage of the fourth power amplifier;
step S400, in a case that the third power amplifier and the fourth power amplifier reach the second efficiency point, enabling the first power amplifier to perform the second active load traction on the third power amplifier and the fourth power amplifier;
step S500, in the case that the first power amplifier reaches the third efficiency point, enabling the second power amplifier to perform the third active load traction on the first power amplifier until the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier all reach the saturated output state.
In an embodiment of the present application, firstly, an amplitude of a second radio frequency signal is obtained, and when the amplitude of the second radio frequency signal is greater than a gate trigger voltage of a third power amplifier and a gate trigger voltage of a fourth power amplifier, the third power amplifier and the fourth power amplifier are enabled to amplify the second radio frequency signal; then, under the condition that the third power amplifier and the fourth power amplifier reach a second efficiency point, enabling the first power amplifier to perform second active load traction on the third power amplifier and the fourth power amplifier; under the condition that the first power amplifier reaches a second efficiency point, the second power amplifier is started to carry out third active load traction on the first power amplifier until the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier all reach a saturated output state, multiple load traction is realized, and the power rollback efficiency is improved. As shown in fig. 9, one embodiment of the present application provides a graph of efficiency versus efficiency for a wideband power amplifier and a conventional load balanced power amplifier, where the abscissa represents the magnitude of the input power and the ordinate represents the magnitude of the output power; it can be seen that in the first half of the curve, the conventional load balancing power amplifier and the wideband power amplifier of the embodiments of the present application have the same amplification efficiency, and in the second half of the curve, the wideband power amplifier of the embodiments of the present application has higher amplification efficiency than the conventional load balancing power amplifier.
It is worth noting that the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier are provided with different grid trigger voltages, so that the starting sequence of the four power amplifiers under different power classes can be flexibly controlled, further, flexible load traction effect can be realized, and the rollback efficiency is improved. In addition, the control process can also be carried out on the starting sequence of the power amplifier by controlling the amplitude of the input radio frequency signal.
It can be understood that the embodiment of the present application exemplifies a case where power amplification is implemented, and different power amplifiers are triggered and started according to the amplitude of the obtained second radio frequency signal, which is not the only trigger starting manner, and other similar trigger starting manners should be considered as falling within the protection scope of the present application; for example, in other embodiments, only the gate trigger voltage of a different power amplifier needs to be reset, and other trigger starting modes may be implemented; for example, the amplitude of the first radio frequency signal may be acquired first, and then different ones of the entire wideband power amplifiers may be triggered to start based on the amplitude of the first radio frequency signal.
As shown in fig. 8, fig. 8 is a flowchart of a method for amplifying broadband power according to an embodiment of the present application, which is applied to the broadband power amplifier described above, where the first power amplifier, the second power amplifier, the third power amplifier, and the fourth power amplifier are provided with different gate trigger voltages, the method includes, but is not limited to, step S600, step S700, and step S800:
step S600, acquiring the amplitude of the second radio frequency signal, and enabling the third power amplifier to start to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal is larger than the gate trigger voltage of the third power amplifier;
step S700, in a case that the third power amplifier reaches the fourth efficiency point, enabling the first power amplifier to perform a fourth active load traction on the third power amplifier;
step S800, in the case that the first power amplifier reaches the fifth efficiency point, enabling the second power amplifier and the fourth power amplifier to perform the fifth active load traction on the first power amplifier and the third power amplifier until the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier all reach the saturated output state.
In an embodiment of the present application, firstly, an amplitude of a second radio frequency signal is obtained, and when the amplitude of the second radio frequency signal is greater than a gate trigger voltage of a third power amplifier, the third power amplifier is enabled to be started to amplify the second radio frequency signal; then, under the condition that the third power amplifier reaches a fourth efficiency point, enabling the first power amplifier to carry out fourth active load traction on the third power amplifier; finally, under the condition that the first power amplifier reaches a fifth efficiency point, enabling the second power amplifier and the fourth power amplifier to start to carry out fifth active load traction on the first power amplifier and the third power amplifier until the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier all reach a saturated output state; by the mode, repeated load traction can be realized, and the power backoff efficiency is improved.
In addition, as shown in fig. 10, an embodiment of the present application further provides an electronic device 800, where the electronic device 800 includes one of the following:
a wideband power amplifier as described above; or alternatively, the first and second heat exchangers may be,
memory 820, processor 810, and a computer program stored on memory 820 and executable on processor 810.
Processor 810 and memory 820 may be connected by a bus or other means.
It should be noted that, the electronic device 800 in the present embodiment and the method for amplifying broadband power in the above embodiment belong to the same inventive concept, so that these embodiments have the same implementation principle and technical effect, and will not be described in detail here.
The non-transitory software program and instructions required to implement the method of amplifying wideband power of the above-described embodiments are stored in the memory 820, and when executed by the processor 810, perform the method of amplifying wideband power in the above-described embodiments, for example, perform the method steps S100 to S200 in fig. 6, the method steps S300 to S500 in fig. 7, and the method steps S600 to S800 in fig. 8 described above.
Furthermore, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions that are executed by a processor 810, for example, by one of the processors 810 in the embodiment of the electronic device 800, and that may cause the processor 810 to perform the method of amplifying broadband power in the embodiment described above, for example, to perform the method steps S100 to S200 in fig. 6, the method steps S300 to S500 in fig. 7, and the method steps S600 to S800 in fig. 8 described above.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
Claims (12)
1. A broadband power amplifier, comprising:
a first balanced power amplifier for receiving a first radio frequency signal;
the control input end of the second balanced power amplifier is connected with the output end of the first balanced power amplifier; wherein, in case of load traction, the first balanced power amplifier causes the second balanced power amplifier to perform a plurality of power rollbacks.
2. The broadband power amplifier of claim 1, wherein the first balanced power amplifier comprises a first quadrature coupler, a second quadrature coupler, a first power amplifier, and a second power amplifier, an output of the first quadrature coupler is connected to an input of the first power amplifier, a coupling of the first quadrature coupler is connected to an input of the second power amplifier, an output of the first power amplifier is connected to an input of the second quadrature coupler, an output of the second power amplifier is connected to a coupling of the second quadrature coupler, and an output of the second quadrature coupler is connected to the second balanced power amplifier.
3. The broadband power amplifier of claim 2, wherein the second balanced power amplifier comprises a third quadrature coupler, a fourth quadrature coupler, a third power amplifier, and a fourth power amplifier, an input of the third quadrature coupler being configured to receive the second radio frequency signal, an output of the third quadrature coupler being coupled to the input of the third power amplifier, a coupling of the third quadrature coupler being coupled to the input of the fourth power amplifier, an output of the third power amplifier being coupled to the input of the fourth quadrature coupler, an output of the fourth power amplifier being coupled to the coupling of the fourth quadrature coupler, an isolation of the fourth quadrature coupler being coupled to the output of the first balanced power amplifier.
4. The broadband power amplifier of claim 2, wherein the first balanced power amplifier further comprises a resonant circuit coupled to the isolated end of the second quadrature coupler.
5. The broadband power amplifier of claim 2, further comprising a fifth power amplifier having an input for receiving a third radio frequency signal, the output of the fifth power amplifier being coupled to the isolation terminal of the second quadrature coupler.
6. The broadband power amplifier of claim 3, further comprising a third balanced power amplifier, the third balanced power amplifier comprising a fifth quadrature coupler, a sixth power amplifier, and a seventh power amplifier, an input of the fifth quadrature coupler for receiving the fourth radio frequency signal, an output of the fifth quadrature coupler connected to the input of the sixth power amplifier, a coupling of the fifth quadrature coupler connected to the input of the seventh power amplifier, an output of the sixth power amplifier connected to the input of the sixth quadrature coupler, an output of the seventh power amplifier connected to the coupling of the sixth quadrature coupler, and an isolation of the sixth quadrature coupler connected to the output of the fourth quadrature coupler.
7. The broadband power amplifier of claim 2, wherein the first balanced power amplifier further comprises a seventh quadrature coupler, a phase compensation module, and an eighth power amplifier, an input of the seventh quadrature coupler being configured to receive the first radio frequency signal, an output of the seventh quadrature coupler being coupled to the input of the phase compensation module, an output of the phase compensation module being coupled to the input of the eighth power amplifier, an output of the eighth power amplifier being coupled to an isolated end of the second quadrature coupler, a coupled end of the seventh quadrature coupler being coupled to the input of the first quadrature coupler.
8. A method of amplifying wideband power, applied to the wideband power amplifier of any of claims 1 to 7, the method comprising:
acquiring the amplitude of the second radio frequency signal, and triggering the second balanced power amplifier to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal meets the trigger starting condition of the second balanced power amplifier;
and triggering the first balanced power amplifier to amplify the first radio frequency signal under the condition that the second balanced power amplifier reaches a first efficiency point, so that the first balanced power amplifier performs first active load traction on the second balanced power amplifier, and the second balanced power amplifier performs multiple power rollbacks.
9. A method of amplifying wideband power as applied to the wideband power amplifier of claim 3, the first power amplifier, the second power amplifier, the third power amplifier, and the fourth power amplifier being provided with different gate trigger voltages, the method comprising:
acquiring the amplitude of the second radio frequency signal, and enabling the third power amplifier and the fourth power amplifier to start to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal is larger than the gate trigger voltage of the third power amplifier and the gate trigger voltage of the fourth power amplifier;
causing the first power amplifier to start up to perform a second active load pulling on the third and fourth power amplifiers if the third and fourth power amplifiers reach a second point of efficiency;
and under the condition that the first power amplifier reaches a third efficiency point, enabling the second power amplifier to start to carry out third active load traction on the first power amplifier until the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier all reach saturated output states.
10. A method of amplifying wideband power as applied to the wideband power amplifier of claim 3, the first power amplifier, the second power amplifier, the third power amplifier, and the fourth power amplifier being provided with different gate trigger voltages, the method comprising:
acquiring the amplitude of the second radio frequency signal, and enabling the third power amplifier to start to amplify the second radio frequency signal under the condition that the amplitude of the second radio frequency signal is larger than the gate trigger voltage of the third power amplifier;
causing the first power amplifier to start up to fourth active load traction on the third power amplifier if the third power amplifier reaches a fourth efficiency point;
and when the first power amplifier reaches a fifth efficiency point, enabling the second power amplifier and the fourth power amplifier to carry out fifth active load traction on the first power amplifier and the third power amplifier until the first power amplifier, the second power amplifier, the third power amplifier and the fourth power amplifier all reach saturated output states.
11. An electronic device, comprising one of:
the broadband power amplifier of any one of claims 1 to 7; or alternatively, the first and second heat exchangers may be,
memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of amplifying broadband power according to any one of claims 8 to 10 when the computer program is executed.
12. A computer readable storage medium storing computer executable instructions for performing the method of amplifying wideband power of any of claims 8 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210960144.6A CN117639684A (en) | 2022-08-11 | 2022-08-11 | Broadband power amplifier, method of amplifying broadband power, and readable storage medium |
| PCT/CN2023/111495 WO2024032553A1 (en) | 2022-08-11 | 2023-08-07 | Broadband power amplifier, broadband power amplification method and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210960144.6A CN117639684A (en) | 2022-08-11 | 2022-08-11 | Broadband power amplifier, method of amplifying broadband power, and readable storage medium |
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| CN117639684A true CN117639684A (en) | 2024-03-01 |
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| GB201817747D0 (en) * | 2018-10-31 | 2018-12-19 | Leonardo Mw Ltd | A radio frequency power amplifier |
| CN109889162B (en) * | 2019-01-23 | 2023-03-24 | 杭州电子科技大学 | Self-input controlled load modulation power amplifier and implementation method thereof |
| CN109921750B (en) * | 2019-01-24 | 2023-05-26 | 杭州电子科技大学 | Broadband power amplifier based on active load modulation and design method thereof |
| EP4024704A4 (en) * | 2019-09-16 | 2022-08-31 | Huawei Technologies Co., Ltd. | Power amplifier circuit, transmitter and network device |
| CN113364417A (en) * | 2021-06-22 | 2021-09-07 | 苏州悉芯射频微电子有限公司 | Adjustable load balance power amplifier structure |
| CN114268280A (en) * | 2021-12-20 | 2022-04-01 | 北京邮电大学 | Broadband load modulation balanced amplifier with harmonic suppression function |
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