WO2015188300A1

WO2015188300A1 - Power amplification method and device for outphase modulation-based power amplifier

Info

Publication number: WO2015188300A1
Application number: PCT/CN2014/079459
Authority: WO
Inventors: 武胜波; 王亮芳; 吴成林; 燕忌
Original assignee: 华为技术有限公司
Priority date: 2014-06-09
Filing date: 2014-06-09
Publication date: 2015-12-17
Also published as: CN105474534A; CN105474534B

Abstract

A power amplification method and device for an outphase modulation-based power amplifier. The method comprises: decomposing an original input signal into at least two decomposed signals of different amplitudes; amplifying, by at least two power amplifiers (21, 22), powers of corresponding decomposed signals to obtain power-amplified decomposed signals, wherein the number of the power amplifiers (21, 22) is the same as that of the decomposed signals; and synthesizing, by a non-insulation combiner (30), the various power-amplified decomposed signals, to obtain power-amplified output signals, wherein the non-insulation combiner (30) comprises a circuit capable of realizing a vector synthesis formula of different amplitudes. Also disclosed is a device using the method. By means of the method and device, the efficiency of radio signal power amplifiers can be increased.

Description

Power amplification method and device based on out-of-phase phase modulation power amplifier

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for power amplification. Background technique

Amplifying the power of the radio signal allows the radio signal to cover a wider area. Therefore, how to improve the efficiency of radio signal amplifiers will become very important.

In the prior art, the Chireix (Chireix) combiner in the field of outphasing Modulation (outphasing Modulation) power amplifiers is a power amplifier that uses a symmetric power amplifier to amplify radio signals. The input signal is decomposed into two equal-phase out-of-phase signals, and then the signals of the two equal-phase out-of-phase signals are separately amplified, and finally combined. Since the prior art can only combine two signals of equal amplitude and out of phase, the application of the power amplifier is limited to a certain extent, and in the case of a signal with high power and peak-to-average ratio, the efficiency of the power amplifier will be limited. limit. Summary of the invention

Embodiments of the present invention provide a method and a device for power amplification, which can improve the efficiency of a radio signal power amplifier.

A first aspect of the present invention provides a power amplifying apparatus based on an out-of-phase phase modulation power amplifier, including: a signal decomposer, at least two power amplifiers, and a non-isolated combiner;

The signal decomposer is coupled to the non-isolated combiner by the at least two power amplifiers; the signal decomposer is configured to decompose the original input signal into at least two decomposed signals of different amplitudes;

The at least two power amplifiers are configured to amplify the power of the corresponding decomposed signals to obtain a power-amplified decomposed signal, wherein the number of the power amplifiers is the same as the number of the decomposed signals; a router for synthesizing the decomposition signals of the respective power amplifications to obtain The power amplified output signal, the non-isolated combiner includes a circuit that can implement a unequal-width vector synthesis formula.

In the first possible implementation,

When the number of the power amplifiers is greater than or equal to three, the signal decomposer is specifically configured to decompose the original input signal into two according to preset preset at least three mutually unequal amplitude fixed values and a first signal decomposition formula. At least three decomposition signals of varying amplitudes;

The amplitudes of the respective decomposition signals are respectively in one-to-one correspondence with the fixed values of the respective amplitudes; wherein, the phases of the at least three decomposition signals having unequal amplitudes are based on the at least three mutually unequal amplitude fixed values and the The first signal decomposition formula is calculated.

In combination with the first aspect, or the first possible implementation of the first aspect, in a second possible implementation,

When the number of the power amplifiers is two, the signal decomposer is specifically configured to: when detecting that the amplitude of the original input signal is in the first amplitude region, according to the preset two mutually unequal amplitude fixed values And the first signal decomposition formula decomposes the original input signal into two decomposition signals having different amplitudes; wherein the amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values, wherein the two amplitudes are equal The phase of the decomposed signal is calculated based on the two mutually unequal amplitude fixed values and the first signal decomposition formula.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a third possible implementation manner,

When the number of the power amplifiers is two, the signal decomposer is specifically configured to: when detecting that the amplitude of the original input signal is in the second amplitude region, according to the phase of the original input signal, the preset two mutual An unequal amplitude fixed value and a second signal decomposition formula, the original input signal is decomposed into two decomposition signals of different amplitudes;

Wherein the amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values, wherein the phase of one of the decomposition signals is the same as the phase of the original input signal, and the phase of the other decomposition signal is opposite to the phase of the original input signal. in contrast.

In combination with the first aspect, or the first possible implementation of the first aspect, or the second of the first aspect a possible implementation manner, or a third possible implementation manner of the first aspect, in a fourth possible implementation manner,

When the number of the power amplifiers is two, the signal decomposer is further configured to: when detecting that the amplitude of the original input signal is in the second amplitude region, according to the preset two mutually unequal amplitude fixed values And the third signal decomposition formula decomposes the original input signal into two equalized decomposition signals; wherein the amplitudes of the two decomposition signals are equal to a minimum amplitude fixed value of the two mutually unequal amplitude fixed values;

The phase of the two equal-amplified decomposition signals is calculated according to the minimum amplitude fixed value and the third signal decomposition formula.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, or the third possible implementation of the first aspect, or the first aspect The four possible implementation manners, in the fifth possible implementation manner, the method further includes: at least two digital signal conversion amplifiers;

The at least two digital signal conversion amplifiers are respectively coupled to the signal decomposer and the at least two power amplifiers, the number of the digital signal conversion amplifiers being the same as the number of the power amplifiers;

The at least two digital signal conversion amplifiers are configured to perform digital-to-analog conversion, frequency conversion, and amplification on each of the decomposition signals decomposed by the signal decomposer, and then send the digital-to-analog conversion, the frequency conversion, and the amplified decomposition signal to the At least two power amplifiers;

The at least two power amplifiers are specifically configured to perform power amplification on the corresponding digital-to-analog conversion, frequency conversion, and amplified decomposition signals to obtain a power-amplified decomposition signal.

With reference to the first aspect, or the first possible implementation of the first aspect, or the second possible implementation of the first aspect, or the third possible implementation of the first aspect, or the first aspect Four possible implementations, or a fifth possible implementation of the first aspect, in a sixth possible implementation,

The non-isolated combiner is realized by any one of a microstrip, a bridge, a coupler, and a balun. A second aspect of the present invention provides a power amplification method based on an out-of-phase phase modulation power amplifier, comprising: decomposing the original input signal into at least two decomposition signals having unequal amplitudes;

Amplifying the power of the corresponding decomposed signal by using at least two power amplifiers to obtain a power-amplified decomposed signal, wherein the number of the power amplifiers is the same as the number of the decomposed signals;

The respective power-amplified decomposition signals are synthesized by a non-isolated combiner to obtain an output signal after power amplification, and the non-isolated combiner includes a circuit that can realize a vector synthesis formula of unequal amplitude.

In a first possible implementation, the decomposing the original input signal into at least two decomposition signals of different amplitudes includes:

When the number of the power amplifiers is greater than or equal to three, the original input signal is decomposed into at least three decomposition signals of different amplitudes according to preset preset at least three mutually unequal amplitude fixed values and a first signal decomposition formula. ;

With reference to the second aspect, in a second possible implementation, the splitting the original input signal into at least two split signals of different amplitudes includes:

When the number of the power amplifiers is two, and the amplitude of the original input signal is detected to be in the first amplitude region, the original input signal is determined according to the preset two mutually unequal amplitude fixed values and the first signal decomposition formula. Decomposed into two decomposition signals of different amplitudes;

The amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values, wherein the phases of the two amplitudes of the decomposition signals are different according to the two mutually unequal amplitude fixed values and the The first signal decomposition formula is calculated.

With reference to the second aspect, in a third possible implementation, the decomposing the original input signal into at least two decomposition signals having unequal amplitudes includes:

When the number of the power amplifiers is two, and the amplitude of the original input signal is detected to be in the second amplitude region, according to the phase of the original input signal, the preset two mutually unequal amplitude fixed values, and the second signal Decomposition formula, the original input signal is decomposed into two decomposition signals of different amplitudes; Wherein the amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values, wherein the phase of one of the decomposition signals is the same as the phase of the original input signal, and the phase of the other decomposition signal is opposite to the phase of the original input signal. in contrast.

With reference to the second aspect, in a fourth possible implementation, the decomposing the original input signal into at least two decomposition signals having different amplitudes includes:

When the number of the power amplifiers is two, and the amplitude of the original input signal is detected to be in the second amplitude region, the original input signal is obtained according to the preset two mutually unequal amplitude fixed values and the third signal decomposition formula. Decomposed into two equalized decomposition signals;

Wherein, the amplitudes of the two decomposition signals are equal to a minimum amplitude fixed value of the two mutually unequal amplitude fixed values;

With reference to the second aspect, or the first possible implementation of the second aspect, or the second possible implementation of the second aspect, or the third possible implementation of the second aspect, or the second aspect In a fourth possible implementation manner, in a fifth possible implementation manner, the power of the corresponding decomposed signal is amplified by using at least two power amplifiers to obtain a power-amplified decomposed signal, including:

Performing digital-to-analog conversion, frequency conversion, and amplification on each of the decomposition signals by at least two digital signal conversion amplifiers, and transmitting the digital-to-analog conversion, frequency conversion, and amplified decomposition signals to the at least two power amplifiers;

Performing power amplification on the corresponding digital-to-analog conversion, frequency conversion, and amplified decomposition signals by the at least two power amplifiers to obtain a power-amplified decomposition signal;

The number of the digital signal conversion amplifiers is the same as the number of the power amplifiers. With reference to the second aspect, or the first possible implementation of the second aspect, or the second possible implementation of the second aspect, or the third possible implementation of the second aspect, or the second aspect Four possible implementations, or a fifth possible implementation of the second aspect, in a sixth possible implementation,

The non-isolated combiner is formed by using any one of a microstrip, a bridge, a coupler, and a balun. Implemented.

It can be seen from the above that the embodiment of the present invention can expand the use range of the power amplifier by decomposing the original input signal into at least two decomposition signals of different amplitudes, and because the amplitudes between the decomposition signals are not equal, there are power amplifiers with different power levels. The cooperation can combine the decomposed signals with different power levels to improve the efficiency of the overall power amplifier. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a schematic structural diagram of a power amplifying device according to an embodiment of the present invention;

2 is a schematic diagram of a power amplifier result of a power amplifying device according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of another power amplifying device according to an embodiment of the present invention;

4 is a schematic flowchart of a power amplification method according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart diagram of another power amplification method according to an embodiment of the present invention. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of a power amplifying device 1 according to an embodiment of the present invention. The power amplifying device 1 may include: a signal decomposer 10, at least two power amplifiers, and a non-isolated combiner 30. In the figure, two power amplifiers are taken as an example, which are a power amplifier 21 and a power amplifier 22, respectively.

The signal decomposer 10 passes the at least two power amplifiers and the non-isolated combiner 30 connection;

The signal decomposer 10 is configured to decompose the original input signal into at least two decomposition signals having different amplitudes;

The at least two power amplifiers are configured to amplify the power of the corresponding decomposed signals to obtain a power-amplified decomposed signal, wherein the number of the power amplifiers is the same as the number of the decomposed signals; The router 30 is configured to synthesize the power-amplified decomposition signals to obtain a power-amplified output signal, where the non-isolated combiner includes a circuit that can implement an unequal-width vector synthesis formula;

Specifically, in FIG. 1, the original input signal is input to the signal decomposer 10 through an A port, and an output end of the signal decomposer 10 is respectively connected to an input end of the power amplifier 21 and an input end of the power amplifier 22, An output end of the power amplifier 21 and an output end of the power amplifier 22 are respectively connected to an input end of the non-isolated combiner 30, and the non-isolated combiner 30 obtains a power amplified output signal after synthesis The power amplified output signal is output from the B port. The power amplifier states of the two power amplifiers may be different from each other. The power amplifier state may refer to a bias voltage or an operating voltage, that is, the bias voltage or the operating voltage of the power amplifier 21 and the power amplifier 22 are different from each other. For example, the ratio of the power between the two decomposed signals decomposed by the signal decomposer 10 is 5:1. At this time, in order to achieve the best power amplifier efficiency, the two channels can be decomposed by two power amplifiers with different power amplifier states. The signal is amplified, and the power ratio between the amplified two-way decomposition signals is changed to 2:1, so that the power amplifier efficiency is best when the combined power ratio ratio becomes a two-way decomposition signal of 2:1. Of course, if the power ratio between the two decomposed signals decomposed by the signal decomposer 10 is already 2:1, the power amplifier states of the two power amplifiers may be the same.

The signal decomposer 10 may be specifically configured to: when detecting that the amplitude of the original input signal is in the first amplitude region, according to the preset two mutually unequal amplitude fixed values and the preset first signal decomposition formula Decomposing the original input signal into two decomposition signals of different amplitudes;

The amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values, wherein the phases of the two amplitudes of the decomposition signals are different according to the two mutually unequal amplitude fixed values and the The first signal decomposition formula is calculated; Specifically, as shown in FIG. 1, the signal decomposer 10 decomposes the original input signal into two decomposed signals. At this time, two amplitude fixed values Si and s ₂ may be preset, and the original input signal is set as a vector V. Wherein the amplitude of the vector V IVI Si+S^ the first amplitude region is S _r S ₂ ≤ IVI <S!+S ₂

Where β is the phase angle of the decomposition signal whose amplitude is Si, and Θ is the phase angle of the decomposition signal whose amplitude is S ₂ . The amplitude of the two decomposed signals obtained by the signal decomposer 10 decomposing the original input signal is S^o S ₂ and the constraint relationship of the two decomposed signals is S _lS in ( β ) = S ₂ sin ( Θ ), Therefore, according to the known reference HS _{1 3⁄4} S ₂ and the first signal decomposition formula, the angles of β and Θ can be calculated, that is, the phases of the two decomposed signals are calculated to facilitate subsequent signal synthesis. After the power amplifier 21 and the power amplifier 22 respectively power-amplify the two decomposed signals, the amplitude S ^ of one of the decomposed signals becomes s„, and the amplitude s _{2 of the} other decomposed signal becomes larger as s ₂₂ . At this time, the non-isolated combiner 30 can calculate the amplified vector V amplification according to the formula: V amplification = 8 „ +8 ₂₂ , that is, synthesize the amplified vector V, and the V is the power amplification. After the output signal.

In addition, the signal decomposer 10 is further configured to: when detecting that the amplitude of the original input signal is in the second amplitude region, according to the phase of the original input signal, the preset two mutually unequal amplitude fixed values, and the second signal Decomposition formula, the original input signal is decomposed into two decomposition signals of different amplitudes; wherein the amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values - one of the phases of the decomposition signal and the original input signal The phases are the same, and the phase of the other resolved signal is opposite to the phase of the original input signal;

Specifically, as shown in FIG. 1, the signal decomposer 10 decomposes the original input signal into two decomposed signals. At this time, two amplitude fixed values Si and s ₂ may be preset, and the original input signal is set as a vector V. , where the magnitude of the vector V is IVI

The second amplitude region is 0≤IVI≤s _r s ₂ , where S!>S ₂ , and the second signal decomposition formula is: V=a (S!-S ₂ X ^+e^, α is The variable value of the second signal decomposition formula, φ is the phase angle of the vector V. The signal splitter 10 decomposes the original input signal into two decomposed signals having amplitudes of S ₂ and amplitudes of Si. The corresponding phase angle is φ, and the phase angle corresponding to the decomposition signal of amplitude S ₂ is -φ. According to the known parameters S ₂ , φ and V, the variable value α can be calculated. Si decomposed signal power amplification, the power amplifier and the amplitude of the 22 pairs of signal S ₂ is an exploded power amplifier, wherein the amplitude signal becomes an exploded greatly S ", the other decomposed signal amplitude S ₂ of the larger For S ₂₂ , the non-isolated combiner 30 can be according to the formula:

V amplification = a ( S „ - S ₂₂ ) ( + ε ) /2, and the amplified vector V is amplified, that is, the amplified vector V ^ is synthesized, and the power-amplified output signal is obtained.

In addition, the signal decomposer 10 is further configured to: when detecting that the amplitude of the original input signal is in the second amplitude region, the original input signal according to the preset two mutually unequal amplitude fixed values and the third signal decomposition formula Decomposed into two equalized decomposition signals;

Wherein the phases of the two equalized decomposition signals are calculated according to the minimum amplitude fixed value and the third signal decomposition formula;

The second amplitude region is 0≤IVI≤s _r s ₂ , wherein the third signal decomposition formula is: V=S ₂ (

), where Θ and -Θ are the phase angles of the two decomposed signals, respectively. At this time, the signal decomposer 10 decomposes the original input signal into two decomposed signals whose amplitudes are all equal to S ₂ , and then calculates the Θ- according to the known parameters ΔV V , S ₂ and the third signal decomposition formula. From the angle of Θ, the phase of the two decomposed signals is calculated to facilitate subsequent signal synthesis. At this time, the decomposed two-way decomposition signal is a two-way decomposition signal of equal amplitude and out of phase. After the power amplifier 21 and the power amplifier 22 respectively power-amplify the two decomposed signals, the amplitude of the two demultiplexed signals will be changed from S ₂ to S ₂₂ , and the non-isolated combiner 30 can be according to the formula: V

And calculating the amplified vector V, that is, synthesizing the amplified vector V^, which is the output signal after the power amplification.

2 is a simulation diagram of the power amplifier result of the power amplifying device 1 according to an embodiment of the present invention. The curve a is a simulation result of the power amplifier result of the power amplifying device 1 according to the embodiment of the present invention, and the curve b It is a simulation diagram of a power amplifier result based on Chireix combiner in the prior art, wherein The abscissa is the output power of the power amplifier, and the ordinate is the power amplifier efficiency. As can be seen from FIG. 2, the power amplifier efficiency of the power amplifying device 1 provided by the embodiment of the present invention is superior to the power amplifier efficiency based on the Chireix combiner as a whole.

Specifically, the non-isolated combiner 30 provided by the embodiment of the present invention has a vector synthesis formula that can realize unequal amplitude in the non-isolated combiner 30 compared to the Chireix combiner in the prior art. The non-isolated combiner 30 of the embodiment of the present invention can synthesize the equal-amplitude decomposition signal and can also decompose the unequal amplitude. The signal is synthesized, which expands the range of use of the outphasing amplifier and further enhances the efficiency of the amplifier. For example, in a small power range, a power amplifier with a small power is dominant. Compared with two power amplifiers with equal power, the power output of the low power amplifier is small, so the power amplifier efficiency is high. At the same time, the power amplifier impedance generated during the combined circuit can achieve high efficiency impedance under the principle of active load traction, and when the power ratio between the two decomposed signals after power amplification is a certain ratio, for example, 2 : 1 , can make the power amplifier achieve the best efficiency, thus further improving the efficiency of the power amplifier.

When the two demultiplexed signals are decomposed, the non-isolated combiner 30 can synthesize two demultiplexed signals. At this time, the non-isolated combiner 30 can include two input ports, a microstrip circuit, and an output port. The two input ports respectively receive the decomposed signals of one of the power amplifications, and transmit the decomposed signals after the power amplification to the microstrip circuit, and then synthesize the decomposed signals of the two power amplifications by the microstrip circuit to obtain the power amplification. The composite signal is finally output by the output port to the synthesized signal after the power amplification. Wherein, the microstrip circuit may comprise a linear microstrip, a polygonal microstrip, a microstrip of a mutated width, and the like.

Of course, the non-isolated combiner 30 provided by the embodiment of the present invention can be implemented by using any one of a bridge, a coupler, and a balun.

It can be seen from the above that the embodiment of the present invention can expand the use range of the power amplifier by decomposing the original input signal into at least two decomposition signals of different amplitudes, and because the amplitudes between the decomposition signals are not equal, there are power amplifiers with different power levels. The cooperation can combine the decomposed signals with different power levels to improve the efficiency of the overall power amplifier.

FIG. 3 is a schematic structural diagram of another power amplifying device 1 according to an embodiment of the present invention. The power amplifying device 1 may include the signal decomposer 10 in the foregoing embodiment of FIG. The power amplifier 21, the power amplifier 22, and the non-isolated combiner 30. Further, the power amplifying device 1 may further include at least two digital signal conversion amplifiers, and two digital signal conversion amplifiers are exemplified in FIG.

The at least two digital signal conversion amplifiers are respectively coupled to the signal decomposer 10 and the at least two power amplifiers, the number of the digital signal conversion amplifiers being the same as the number of the power amplifiers;

The at least two digital signal conversion amplifiers are configured to perform digital-to-analog conversion, frequency conversion, and amplification on the respective decomposition signals decomposed by the signal decomposer 10, and then send the digital-to-analog conversion, the frequency conversion, and the amplified decomposition signals to the Said at least two power amplifiers;

Specifically, in FIG. 3, the output end of the signal decomposer 10 is respectively connected to the input end of the digital signal conversion amplifier 41 and the input end of the digital signal conversion amplifier 42, the output end of the digital signal conversion amplifier 41 and the input of the power amplifier. The terminal is connected, the input of the digital signal conversion amplifier 42 is connected to the input of the power amplifier, and the output of the power amplifier 21 and the output of the power amplifier 22 are respectively connected to the input of the non-isolated combiner 30. The digital signal conversion amplifier 41 and the digital signal conversion amplifier 42 can respectively perform digital-to-analog conversion, frequency conversion, and amplification on one of the decomposed signals, and the digital signal conversion amplifier 41 converts, converts, and amplifies one of the digital-to-analog signals. The decomposition signal is transmitted to the power amplifier 21, and the digital signal conversion amplifier 42 transmits the digital-to-analog conversion, the frequency conversion, and the amplified one of the other decomposition signals to the power amplifier 22, at this time, the power amplifier 21 and the power amplifier 22 can perform power amplification on the digital-to-analog conversion, the frequency conversion, and the amplified decomposition signal, respectively. The structure and principle of the signal decomposer 10, the power amplifier 21, the power amplifier 22, and the non-isolated combiner 30 can be referred to the embodiment corresponding to FIG. 1 above. Said.

Further, the signal decomposer 10 provided by the embodiment of the present invention can decompose three or more decomposition signals, and the number of the digital signal conversion amplifier and the power amplifier are respectively equal to the number of the decomposed signals, and the non-isolated combination The router 30 can synthesize three or more decomposition signals; Specifically, when the number of the power amplifiers is greater than or equal to three, the signal decomposer is specifically configured to: convert the original input according to preset preset at least three mutually unequal amplitude fixed values and a first signal decomposition formula. The signal is decomposed into at least three decomposition signals of unequal amplitudes;

The amplitudes of the respective decomposition signals are respectively in one-to-one correspondence with the fixed values of the respective amplitudes; wherein, the phases of the at least three decomposition signals having unequal amplitudes are based on the at least three mutually unequal amplitude fixed values and the The first signal decomposition formula is calculated;

Specifically, the signal decomposer 10 decomposes the original input signal into N-way decomposition signals. At this time, N amplitude fixed values S ₂ , S ₃ ... S _N may be preset, and the original input signal is set. The vector V, wherein the first signal decomposition formula may be: V=S ₁ e ^ipi +S ₂ e ^ip2 +S ₃ e ^ip3 + ... + , wherein βΐ is the decomposition of the amplitude is Si The phase angle of the signal, β2 is the phase angle of the decomposition signal whose amplitude is S ₂ , and β Ν is the phase angle of the decomposition signal whose amplitude is S _N . The signal decomposition device 10 decomposes the original input signal to obtain an amplitude of S ₂ , S ₃ ... S _N , respectively, and the constraint relationship of the N-way decomposition signal is S in ( βΐ ) +S ₂ sin ( β2 ) +S ₃ sin ( β3 ) + ... + S _N sin ( βΝ ) =0 , so according to the known parameters V, s ₁ _3⁄4 s ₂ , s ₃ ... ... S _N and the first signal decomposition formula can calculate the angles of β1, β2, β3 ... βΝ, that is, the phase of the decomposed signal is calculated to facilitate subsequent signal synthesis. After at least three power amplifiers respectively perform power amplification on the circuit decomposition signals, the amplitude of each decomposition signal is increased to S „, S _{2 is} increased to S ₂₂ , and S _{3 is} increased to S ₃₃ 8^^ SNN, at this time, the non-isolated combiner 30 can calculate the amplification according to the formula: V amplification = S ₁₁ e ^ipi + S ₂₂ e ^ip2 + S ₃₃ ^i|33 + ... + S _m ^ The subsequent vector V is amplified, that is, the amplified vector V^ is synthesized, which is the output signal after the power amplification.

FIG. 4 is a schematic flowchart of a power amplification method according to an embodiment of the present disclosure, where the method may include:

S101. Decompose the original input signal into at least two decomposition signals having different amplitudes; Specifically, the original input signal can be decomposed into at least two decomposition signals of different amplitudes by a signal decomposer. When the number of power amplifiers is greater than or equal to three, that is, when the three decomposition signals are greater than or equal to the decomposition signal, the original input may be according to the preset fixed amplitude values of at least three mutually different amplitudes and the first signal decomposition formula. The signal is decomposed into at least three decomposition signals having unequal amplitudes; wherein the amplitudes of the respective decomposition signals are respectively in one-to-one correspondence with the fixed values of the respective amplitudes; wherein, the phases of the decomposition signals of the at least three amplitudes are different according to the At least three mutually unequal amplitude fixed values and the first signal decomposition formula are calculated. For example, the signal decomposer decomposes the original input signal into N-way decomposition signals. At this time, N amplitude fixed values S ₂ , S ₃ ... S _N may be preset, and the original input signal is set as a vector. V, wherein the first signal decomposition formula may be: V=S ₁ e ^ipi +S ₂ e ^ip2 +S ₃ e ^ip3 + ... + S^ , where βΐ is a decomposition signal of amplitude The phase angle, β2 is the phase angle of the decomposition signal whose amplitude is S ₂ , and β Ν is the phase angle of the decomposition signal whose amplitude is S _N . The signal decomposition device 10 decomposes the original input signal to obtain an amplitude of the N-way decomposition signals of Si S ₂ , S ₃ ... S _N , respectively, and the constraint relationship of the N-way decomposition signals is S _lS in ( Βΐ ) +S ₂ sin ( β2 )

+S ₃ sin ( β3 ) + ... + S _N sin ( pN ) =0, so according to the known parameters V, S ₁ _3⁄4 S ₂ , S ₃ ... S _N and The first signal decomposition formula can calculate the angles of β1, β2, β3, ... βΝ, that is, the phase of the decomposed signal is calculated to facilitate subsequent signal synthesis.

When the number of the power amplifiers is two, and the amplitude of the original input signal is detected to be in the first amplitude region, the original input may be according to the preset two mutually unequal amplitude fixed values and the first signal decomposition formula. The signal is decomposed into two decomposition signals of different amplitudes; wherein the amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values, wherein the phases of the two amplitudes of the decomposition signals are according to the Two mutually unequal amplitude fixed values and the first signal decomposition formula are calculated. For example, the signal decomposer decomposes the original input signal into two decomposed signals. At this time, two amplitude fixed values Si and S ₂ may be preset, and the original input signal is set to a vector V, where the amplitude of the vector V is IVI.

At this time, the first signal decomposition formula may be: V=

Where β is the phase angle of the decomposition signal of Si and Θ is the phase angle of the decomposition signal of amplitude S ₂ . The amplitude of the two decomposed signals obtained by the signal decomposer 10 decomposing the original input signal is S^. S ₂ , and due to two roads The constraint relationship of the decomposition signal is S _lS in ( β ) = S ₂ sin ( Θ ), so the angles of β and Θ can be calculated according to the known parameters V, S _{1 3⁄4} S ₂ and the first signal decomposition formula. That is, the phase of the two-way decomposition signal is calculated to facilitate subsequent signal synthesis.

When the number of the power amplifiers is two, and the amplitude of the original input signal is detected to be in the second amplitude region, according to the phase of the original input signal, the preset two mutually unequal amplitude fixed values, and the second signal Decomposition formula, the original input signal is decomposed into two decomposition signals of different amplitudes; wherein the amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values - one of the phases of the decomposition signal and the original input signal The phases are the same, and the phase of the other resolved signal is opposite to the phase of the original input signal. For example, the signal decomposer decomposes the original input signal into two decomposed signals. At this time, two amplitude fixed values Si and S ₂ may be preset, and the original input signal is set to a vector V, where the amplitude of the vector V is IVI.

The second amplitude region is 0≤IVI≤s _r s ₂ , where S!>S ₂ , and the second signal decomposition formula is:

α is the variable value of the second signal decomposition formula, and φ is the phase angle of the vector V. The signal decomposer 10 decomposes the original input signal into two decomposed signals having amplitudes of SS ₂ , a phase angle corresponding to the decomposition signal of Si, and a phase angle corresponding to the decomposition signal of the amplitude S ₂ . Is -φ. Based on the known parameters S ₂ , φ and V, the variable value α can be calculated for subsequent signal synthesis.

When the number of the power amplifiers is two, and the amplitude of the original input signal is detected to be in the second amplitude region, the original input signal is obtained according to the preset two mutually unequal amplitude fixed values and the third signal decomposition formula. Decomposed into two equalized decomposition signals; wherein the amplitudes of the two decomposition signals are equal to the smallest amplitude fixed value of the two mutually unequal amplitude fixed values; wherein the two amplitudes are equal to the decomposition signal The phase is calculated based on the minimum amplitude fixed value and the third signal decomposition formula. For example, the signal decomposer decomposes the original input signal into two decomposed signals. At this time, two amplitude fixed values Si and S ₂ may be preset, and the original input signal is set to a vector V, where the amplitude of the vector V is IVI. The second amplitude region of Si+S^ is 0≤IVI≤S _r S ₂ , wherein the third signal decomposition formula is: V=S ₂ ( d e- ), where Θ and −Θ are respectively two The phase angle of the road decomposition signal. At this time, the signal decomposer 10 decomposes the original input signal into two decomposed signals whose amplitudes are equal to S ₂ , and can be calculated according to the known parameters V⁄4 V, S ₂ and the third signal decomposition formula. From the angle of Θ and Θ, the phase of the two decomposed signals is calculated to facilitate subsequent signal synthesis.

5102: Amplify the power of the corresponding decomposed signal by using at least two power amplifiers to obtain a power-amplified decomposed signal, where the number of the power amplifiers is the same as the number of the decomposed signals; specifically, between the power amplifiers The power amplifier states may be different from each other, and the power amplifier state may refer to a bias voltage or an operating voltage, that is, a bias voltage or an operating voltage between the at least two power amplifiers are different from each other. For example, when the power ratio between the two decomposed signals decomposed by the signal decomposer is 5:1, in order to achieve the best power amplifier efficiency, the two decomposed signals can be amplified by two power amplifiers with different power amplifier states. Moreover, the power ratio ratio between the amplified two-way decomposition signals is changed to 2:1, so that the power amplifier efficiency is best when the combined power magnitude ratio becomes a two-way decomposition signal of 2:1. Of course, if the power ratio between the two decomposed signals decomposed by the signal decomposer is already 2:1, the power amplifier states of the two power amplifiers may be the same.

5103. Synthesize each power amplified signal by a non-isolated combiner to obtain a power amplified output signal, where the non-isolated combiner includes a circuit that can implement a vector synthesis formula of unequal amplitudes;

Specifically, the non-isolated combiner may synthesize the decomposed signals of the respective power amplifications by using a first signal decomposition formula described in step S101, or a second signal decomposition formula, or a third signal decomposition formula. The output signal after power amplification, the specific synthesis process can refer to the above figure

1 and the non-isolated combiner 30 described in the embodiment corresponding to Fig. 3 above, and no further explanation is given here.

The non-isolated combiner provided by the embodiment of the invention is compared with the Chireix combiner in the prior art, and a circuit for realizing a vector synthesis formula of unequal amplitude is added to the non-isolated combiner, so that The non-isolated combiner of the embodiment of the present invention can not only synthesize the equal-amplified decomposition signal, but also synthesize the decomposed signals of the unequal amplitude, thereby expanding The range of outphasing amplifiers is used to further improve the efficiency of the amplifier. For example, in a small power range, a power amplifier with a small power is dominant. Compared with two power amplifiers with equal power, the power output of the low power amplifier is small, so the power amplifier efficiency is high. At the same time, the power amplifier impedance generated during the combined circuit can achieve high efficiency impedance under the principle of active load traction, and the two paths after power amplification When the power ratio between the decomposed signals is a certain ratio, for example, 2:1, the power amplifier can achieve the best efficiency, thereby further improving the efficiency of the power amplifier.

When the two demultiplexed signals are decomposed, the non-isolated combiner can synthesize two demultiplexed signals. In this case, the non-isolated combiner can include two input ports, a microstrip circuit, and an output port. The two input ports respectively receive the decomposed signals of one of the power amplifications, and transmit the decomposed signals after the power amplification to the microstrip circuit, and then synthesize the decomposed signals of the two power amplifications by the microstrip circuit to obtain power amplification. The composite signal is finally output by the output port to the synthesized signal after the power amplification. Wherein, the microstrip circuit may comprise a linear microstrip, a polygonal microstrip, a microstrip with a mutated width, and the like.

Of course, the non-isolated combiner provided by the embodiment of the present invention can be implemented by using any one of a bridge, a coupler, and a balun.

FIG. 5 is a schematic flowchart of another power amplification method according to an embodiment of the present invention. The method may include:

S201, the original input signal is decomposed into at least two decomposition signals having different amplitudes;

5202, performing digital-to-analog conversion, frequency conversion, and amplification on each of the decomposition signals by using at least two digital signal conversion amplifiers, and then transmitting the digital-to-analog conversion, frequency conversion, and the amplified decomposition signals to the at least two power amplifiers;

S203, the corresponding digital-to-analog conversion, frequency conversion, and the amplified decomposition signal are power-amplified by the at least two power amplifiers to obtain a power-amplified decomposition signal;

Specifically, the number of the digital signal conversion amplifiers is the same as the number of the power amplifiers. Taking two digital signal conversion amplifiers as an example, two digital signal conversion amplifiers can respectively perform digital-to-analog conversion, frequency conversion, and amplification on one of the decomposed signals, and one of the digital signal conversion amplifiers converts, converts, and amplifies one of the digital-to-analog amplifiers. The decomposition signal is transmitted to one of the power amplifiers, and the other digital signal conversion amplifier converts the digital-to-analog conversion, frequency conversion, and amplification of the other one. The number is transmitted to another power amplifier. At this time, the two power amplifiers can respectively perform power amplification on the digital-to-analog conversion, the frequency conversion, and the amplified decomposition signal to obtain a power-amplified decomposition signal.

S204, synthesizing the respective power amplified decomposition signals by a non-isolated combiner to obtain a power amplified output signal, where the non-isolated combiner includes a circuit capable of realizing a unequal-width vector synthesis formula;

For the specific implementation of the step S201, refer to the S101 in the corresponding embodiment of FIG. 1 and the specific implementation of the step S204. For the specific implementation of the step S103, refer to S103 in the corresponding embodiment of FIG. 1 , and details are not described herein.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium, the program When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

Rights request

A power amplification device based on an out-of-phase phase modulation power amplifier, comprising: a signal decomposer, at least two power amplifiers, and a non-isolated combiner;

The at least two power amplifiers are configured to amplify the power of the corresponding decomposed signals to obtain a power-amplified decomposed signal, wherein the number of the power amplifiers is the same as the number of the decomposed signals; The road device is configured to synthesize the power-amplified decomposition signals to obtain a power-amplified output signal, and the non-isolated combiner includes a circuit that can implement a unequal-width vector synthesis formula.

2. The power amplifying apparatus according to claim 1, wherein

3. The power amplifying apparatus according to claim 1 or 2, characterized in that

When the number of the power amplifiers is two, the signal decomposer is specifically configured to: when detecting that the amplitude of the original input signal is in the first amplitude region, according to the preset two mutually unequal amplitude fixed values And the first signal decomposition formula decomposes the original input signal into two decomposition signals having different amplitudes; wherein the amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values, wherein the two amplitudes are equal The phase of the decomposed signal is based on the two mutually unequal amplitudes The fixed value and the first signal decomposition formula are calculated.

The power amplifying device according to any one of claims 1 to 3, wherein when the number of the power amplifiers is two, the signal decomposer is specifically configured to detect an original input signal. When the amplitude is in the second amplitude region, the original input signal is decomposed into two decomposition signals of different amplitudes according to the phase of the original input signal, the preset two mutually unequal amplitude fixed values, and the second signal decomposition formula;

The power amplifying device according to any one of claims 1 to 4, wherein when the number of the power amplifiers is two, the signal decomposer is further configured to detect an original input signal. When the amplitude is in the second amplitude region, the original input signal is decomposed into two equal-resolution decomposition signals according to the preset two mutually unequal amplitude fixed values and the third signal decomposition formula; wherein the amplitudes of the two decomposition signals are Equal to the minimum fixed amplitude value of the two mutually unequal amplitude fixed values;

The power amplifying apparatus according to any one of claims 1 to 5, further comprising: at least two digital signal conversion amplifiers;

The at least two digital signal conversion amplifiers are configured to perform digital-to-analog conversion, frequency conversion, and amplification on each of the decomposition signals decomposed by the signal decomposer, and then convert, convert, and amplify the digital-to-analog a signal is sent to the at least two power amplifiers;

The power amplifying device according to any one of claims 1 to 6, wherein the non-isolated combiner is in any one of a microstrip, a bridge, a coupler, and a balun. Realized.

8. A power amplification method based on an out-of-phase phase modulation power amplifier, comprising: decomposing the original input signal into at least two decomposition signals having unequal amplitudes;

The method according to claim 8, wherein the decomposing the original input signal into at least two decomposition signals having unequal amplitudes comprises:

The method according to claim 8, wherein the decomposing the original input signal into at least two decomposition signals having different amplitudes comprises:

When the number of the power amplifiers is two, and the amplitude of the original input signal is detected to be the first In the amplitude region, the original input signal is decomposed into two decomposition signals of different amplitudes according to the preset two mutually unequal amplitude fixed values and the first signal decomposition formula;

The method according to claim 8, wherein the decomposing the original input signal into at least two decomposition signals having unequal amplitudes includes:

When the number of the power amplifiers is two, and the amplitude of the original input signal is detected to be in the second amplitude region, according to the phase of the original input signal, the preset two mutually unequal amplitude fixed values, and the second signal Decomposition formula, the original input signal is decomposed into two decomposition signals of different amplitudes; wherein the amplitudes of the two decomposition signals are respectively equal to the two amplitude fixed values - one of the phases of the decomposition signal and the original input signal The phases are the same, and the phase of the other resolved signal is opposite to the phase of the original input signal.

12. The method according to claim 8, wherein the decomposing the original input signal into at least two decomposition signals having unequal amplitudes comprises:

The method according to any one of claims 8 to 12, wherein the power of the corresponding decomposed signal is amplified by at least two power amplifiers to obtain a decomposed signal after power amplification, Includes:

The number of the digital signal conversion amplifiers is the same as the number of the power amplifiers.

14. A method according to any one of claims 8 to 13 wherein:

The non-isolated combiner is realized by using any one of a microstrip, a bridge, a coupler, and a balun.