CN101834571A - Efficient linear power amplifier circuit - Google Patents
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Abstract
An efficient linear power amplifier circuit relates to the technical field of energy amplification and solves the technical problems of facilitating debugging and increasing efficiency. The circuit comprises a main amplifier, an auxiliary amplifier, a front radio-frequency bridge and a back radio-frequency bridge, wherein one input end of the front radio-frequency bridge is connected with an external signal source, the other input end is in serial connection with a pre-microstrip line and a pre-capacitor in turn, the two output ends are separately connected with the input end of the main amplifier and the input end of the auxiliary amplifier; the output ends of the main amplifier and auxiliary amplifier are separately connected with the two input ends of the back radio-frequency bridge; and one output end of the back radio-frequency bridge is used as the signal output end, and the other output end is in serial connection with a post-microstrip line and a post-capacitor. The circuit provided by the invention can provide wider bandwidth.
Description
Technical field
The present invention relates to the technology of power amplification, particularly relate to a kind of technology of efficient linear power amplifier circuit.
Background technology
Rf power amplifier circuit is widely used in all kinds of wireless systems, modern wireless system is in order to improve frequency spectrum resource utilization rate, complicated structure and modulation system have been used, such as in 3G and ofdm communication, using modulation systems such as QPSK, QAM, QAM16, QAM64, the peak-to-average force ratio of signal reaches 10dB even higher in these wireless systems, for the parasitic component to signal carrier is limited,, need in these systems, adopt linear power amplification circuit to satisfy the requirement of system specifications.
As shown in Figure 5, in the existing linear power amplification circuit, AB class balanced type linear power amplification circuit comprises driving stage amplifier 502, preceding radio-frequency bridge 504, back radio-frequency bridge 512, reaches the balanced type amplifying circuit that is made of two class ab ammplifiers 510,511; Wherein preceding radio-frequency bridge 504 and back radio-frequency bridge 512 are 3dB electric bridge (Hybrid Coupler), an input of preceding radio-frequency bridge 504 inserts the signal after driving stage amplifier 502 amplifies, another input is connected in series one 50 ohm resistance 505, signal after an output output of back radio-frequency bridge 512 is amplified, another output is connected in series one 50 ohm resistance 513; The insulation blocking of level before and after this AB class linear power amplification circuit has can have certain power output on path loss another road of bad time, reasonable linearity is arranged, than higher gain etc.; But in order to reach linear requirement when maximum power capabilities (peak power), class ab ammplifier need satisfy the peak power requirement when therefore designing, and the operating efficiency when also therefore making it be operated in smaller power is lower.
In the existing linear power amplification circuit, the Doherty linear amplifier circuit all is made up of a main amplifier (carrier amplifier) and a booster amplifier (peak amplifier), its main amplifier is operated in the AB class, booster amplifier is operated in the C class, wherein main amplifier is at first opened, booster amplifier is just worked to the bias value of setting, and its operating efficiency is compared AB class linear power amplification circuit bigger improvement.But, existing Doherty linear amplifier circuit has following defective: 1) owing to adopted the transmission line of 1/4 wavelength as impedance conversion, therefore under the lower situation of frequency ratio, can be owing to the microstrip line of 1/4 wavelength is long influence the design of PCB fabric swatch (Layout) and circuit, sometimes even can't realize; 2), therefore limited the bandwidth of existing Doherty linear amplifier circuit because the microstrip line of 1/4 wavelength is not suitable for broadband system; 3) existing Doherty linear amplifier circuit only limits to the amplification of single-stage usually, and debugging is also very inconvenient.
Summary of the invention
At the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention provides a kind of simple in structure, debugging convenience, and high efficiency, can be used for the efficient linear power amplifier circuit of broadband system.
In order to solve the problems of the technologies described above, a kind of efficient linear power amplifier circuit provided by the present invention comprises main amplifier and booster amplifier, and described main amplifier is a class ab ammplifier, described booster amplifier is the C class A amplifier A, it is characterized in that: radio-frequency bridge and back radio-frequency bridge before also comprising;
An input of radio-frequency bridge connects outside source before described, and another input is connected in series a prime microstrip line, a prime electric capacity successively, and two output connects the input of main amplifier and the input of booster amplifier respectively; In the two ends of described prime electric capacity, an end that connects the prime microstrip line is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The output of described main amplifier is connected two inputs of radio-frequency bridge afterwards respectively with the output of booster amplifier;
An output of described back radio-frequency bridge is a signal output part, and another output is connected in series a back grade microstrip line, a back grade electric capacity successively; In the two ends of described back level electric capacity, an end that connects back level microstrip line is a link, and the other end is a free end, and its free end is shorted to ground or open circuit.
Further, also comprise bias voltage control branch road; The input of described booster amplifier has two, and wherein the input that links to each other with preceding radio-frequency bridge is a first input end, and another input is second input;
Described bias control circuit comprises wave detector and bias voltage amplifier; The input of described wave detector is connected in series an attenuator, a coupler successively, and its output connects the bias voltage amplifier input terminal, and the output of described bias voltage amplifier connects second input of booster amplifier.
Another kind of efficient linear power amplifier circuit provided by the present invention, comprise first order main amplifier, second level main amplifier, first order booster amplifier and second level booster amplifier, described first, second grade main amplifier is class ab ammplifier, described second level booster amplifier is the C class A amplifier A, it is characterized in that: radio-frequency bridge and back radio-frequency bridge before also comprising;
An input of radio-frequency bridge connects outside source before described, and another input is connected in series a prime microstrip line, a prime electric capacity successively, and two output connects the input of first order main amplifier and the input of first order booster amplifier respectively; In the two ends of described prime electric capacity, an end that connects the prime microstrip line is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The output of described first order main amplifier connects the input of second level main amplifier, and the output of described first order booster amplifier connects the input of second level booster amplifier;
The output of described second level main amplifier is connected two inputs of radio-frequency bridge afterwards respectively with the output of second level booster amplifier;
An output of described back radio-frequency bridge is a signal output part, and another output is connected in series a back grade microstrip line, a back grade electric capacity successively; In the two ends of described back level electric capacity, an end that connects back level microstrip line is a link, and the other end is a free end, and its free end is shorted to ground or open circuit.
Further, described first order booster amplifier is the BC class A amplifier A.
Further, also comprise bias voltage control branch road; The input of described second level booster amplifier has two, and wherein the input that links to each other with first order booster amplifier is a first input end, and another input is second input;
Described bias control circuit comprises wave detector and bias voltage amplifier; The input of described wave detector is connected in series an attenuator, a coupler successively, and its output connects amplifier input terminal, and the output of described bias voltage amplifier connects second input of second level booster amplifier.
Efficient linear power amplifier circuit provided by the invention, adopt radio-frequency bridge to replace 1/4 wavelength impedance conversion, solved the deficiency of traditional Doherty amplifying circuit, it is simple in structure, can not influence the design of PCB fabric swatch and circuit, the mode of radio-frequency bridge has also made things convenient for debugging, and high efficiency, can be used for broadband system.
Description of drawings
Fig. 1 is the circuit diagram of the efficient linear power amplifier circuit of first embodiment of the invention;
Fig. 2 is the circuit diagram of the efficient linear power amplifier circuit of second embodiment of the invention;
Fig. 3 is the circuit diagram of the efficient linear power amplifier circuit of third embodiment of the invention;
Fig. 4 is the circuit diagram of the efficient linear power amplifier circuit of fourth embodiment of the invention;
Fig. 5 is the circuit diagram of existing AB class balanced type linear power amplification circuit.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As shown in Figure 1, a kind of efficient linear power amplifier circuit that first embodiment of the invention provided, comprise main amplifier 110 (carrier amplifier) and booster amplifier 111 (peak amplifier), described main amplifier 110 is class ab ammplifiers, described booster amplifier 111 is C class A amplifier As, it is characterized in that: radio-frequency bridge 104 and back radio-frequency bridge 112 before also comprising;
An input of radio-frequency bridge 104 connects outside source through a driving stage amplifier 102 before described, another input is connected in series a prime microstrip line 105, a prime electric capacity 106 successively, and two output connects the input of main amplifier 110 and the input of booster amplifier 111 respectively; In the two ends of described prime electric capacity 106, an end that connects prime microstrip line 105 is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The output of the output of described main amplifier 110 and booster amplifier 111 is connected two inputs of back radio-frequency bridge 112 respectively;
An output of described back radio-frequency bridge 112 is a signal output part, and another output is connected in series a back grade microstrip line 113, a back grade electric capacity 114 successively; In the two ends of described back level electric capacity 114, an end that connects back level microstrip line 113 is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
Described driving stage amplifier 102 is class ab ammplifiers.
The operation principle of first embodiment of the invention is as follows:
During first embodiment of the invention work, main amplifier 110 is in opening always, and external signal is radio-frequency bridge 104 before driving stage amplifier 102 is amplified into;
The signal of current radio-frequency bridge 104 outputs hour, booster amplifier 111 is in closed condition, the signal of radio-frequency bridge 104 outputs is after main amplifier 110 amplifies, from the signal output part output of back radio-frequency bridge 112 before this moment;
When the signal of current radio-frequency bridge 104 outputs is enough big, booster amplifier 111 is in opening, the signal of radio-frequency bridge 104 outputs is divided into two-way before this moment, one route main amplifier 110 carries out processing and amplifying, another route booster amplifier 111 carries out processing and amplifying, the output signal of main amplifier 110 and booster amplifier 111 through after radio-frequency bridge 112 close Lu Houcong after the signal output part output of radio-frequency bridge 112; The signal of current radio-frequency bridge 104 outputs is returned to hour, and booster amplifier 111 returns back to closed condition;
During each component debug in the first embodiment of the invention, adjust main amplifier 110 earlier separately, adjust booster amplifier 111 more separately, adjust prime microstrip line 105 and prime electric capacity 106 again, and then adjust back level microstrip line 113 and back level electric capacity 114; Wherein, the debugging that need circulate of microstrip line and electric capacity, till the index of amplifying circuit can not improve again, it adjusts foundation is that the linearity of amplifying circuit and efficient are walked by good direction, after finishing, adjustment can continue to optimize the bias voltage of amplifying circuit, and bias voltage and back level microstrip line 113 together with main amplifier 110 and booster amplifier 111, back level electric capacity 114 etc., make the performance of amplifying circuit reach best, even the efficient of amplifying circuit, linear, the combination property of indexs such as gain is best, linearity and efficient are a pair of contradiction during debugging, need be traded off according to actual index, be taken into account the gain of amplifying circuit again, gain flatness (Ripple) etc.
As shown in Figure 2, a kind of efficient linear power amplifier circuit that second embodiment of the invention provided, comprise main amplifier 210 (carrier amplifier) and booster amplifier 211 (peak amplifier), described main amplifier 210 is class ab ammplifiers, described booster amplifier 211 is C class A amplifier As, it is characterized in that: radio-frequency bridge 204, back radio-frequency bridge 212 and bias control circuit before also comprising;
An input of radio-frequency bridge 204 connects outside source through a driving stage amplifier 202 before described, another input is connected in series a prime microstrip line 205, a prime electric capacity 206 successively, and two output connects the input of main amplifier 210 and the input of booster amplifier 211 respectively; In the two ends of described prime electric capacity 206, an end that connects prime microstrip line 205 is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The output of the output of described main amplifier 210 and booster amplifier 211 is connected two inputs of back radio-frequency bridge 212 respectively;
An output of described back radio-frequency bridge 212 is a signal output part, and another output is connected in series a back grade microstrip line 213, a back grade electric capacity 214 successively; In the two ends of described back level electric capacity 214, an end that connects back level microstrip line 213 is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
Described driving stage amplifier 202 is class ab ammplifiers;
The input of described booster amplifier 211 has two, and wherein the input that links to each other with preceding radio-frequency bridge 204 is a first input end, and another input is second input;
Described bias control circuit comprises wave detector 203 and bias voltage amplifier 201; The input of described wave detector 203 is connected in series an attenuator 207, a coupler 208 successively, and its output connects the input of bias voltage amplifier 201, and the output of described bias voltage amplifier 201 connects second input of booster amplifier 211;
The operation principle of second embodiment of the invention and first embodiment are similar, and its difference part is: the bias voltage by bias control circuit control booster amplifier 211 makes the big or small dynamic change of bias voltage with signal, thereby further raises the efficiency;
The operation principle of second embodiment of the invention control bias voltage is as follows:
Be coupled out signal by coupler 208, the signal that is coupled out is input to wave detector 203 and carries out detection after attenuator 207 decays to appropriate signal, and the signal after the detection is sent into peak amplifier 211 after bias voltage amplifier 201 amplifies;
In the second embodiment of the invention, the adjustment method of each parts and first embodiment are similar.
As shown in Figure 3, a kind of efficient linear power amplifier circuit that third embodiment of the invention provided, comprise first order main amplifier 315, second level main amplifier 310, first order booster amplifier 316 and second level booster amplifier 311, described first, second grade main amplifier is class ab ammplifier, described first order booster amplifier 316 is BC class A amplifier As, described second level booster amplifier 311 is C class A amplifier As, it is characterized in that: radio-frequency bridge 304 and back radio-frequency bridge 312 before also comprising;
An input of radio-frequency bridge 304 connects outside source before described, another input is connected in series a prime microstrip line 305, a prime electric capacity 306 successively, and two output connects the input of first order main amplifier 315 and the input of first order booster amplifier 316 respectively; In the two ends of described prime electric capacity 306, an end that connects prime microstrip line 305 is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The output of described first order main amplifier 315 connects the input of second level main amplifier 310, and the output of described first order booster amplifier 316 connects the input of second level booster amplifier 311;
The output of described second level main amplifier 310 is connected two inputs of radio-frequency bridge 312 afterwards respectively with the output of second level booster amplifier 311;
An output of described back radio-frequency bridge 312 is a signal output part, and another output is connected in series a back grade microstrip line 313, a back grade electric capacity 314 successively; In the two ends of described back level electric capacity 314, an end that connects back level microstrip line 313 is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The operation principle of third embodiment of the invention is as follows:
During third embodiment of the invention work, first order main amplifier 315 and second level main amplifier 310 are in opening always, and external signal directly inserts preceding radio-frequency bridge 304;
The signal of current radio-frequency bridge 304 outputs hour, first order booster amplifier 316 and second level booster amplifier 311 are in closed condition, the signal of radio-frequency bridge 304 outputs is after first order main amplifier 315 and the amplification of second level main amplifier 310 two-stages, from the signal output part output of back radio-frequency bridge 312 before this moment;
When the signal of current radio-frequency bridge 304 outputs is enough big, first order booster amplifier 316 and second level booster amplifier 311 are in opening, the signal of radio-frequency bridge 304 outputs is divided into two-way before this moment, one route first order main amplifier 315 and second level main amplifier 310 carry out the two-stage processing and amplifying, another route first order booster amplifier 316 and second level booster amplifier 311 carry out the two-stage processing and amplifying, the output signal of second level main amplifier 310 and second level booster amplifier 311 through after radio-frequency bridge 312 close Lu Houcong after the signal output part output of radio-frequency bridge 312; The signal of current radio-frequency bridge 304 outputs is returned to hour, and first order booster amplifier 316 and second level booster amplifier 311 return back to closed condition;
During each component debug in the third embodiment of the invention, adjust first order main amplifier 315 earlier separately, adjust second level main amplifier 310 more separately, again with first order main amplifier 315 and second level main amplifier 310 cascades debugging, and then adjust first order booster amplifier 316 separately, adjust second level booster amplifier 311 more separately, again with first order booster amplifier 316 and second level booster amplifier 311 cascades debugging, and then adjust prime microstrip line 305 and prime electric capacity 306, adjust back level microstrip line 313 and back level electric capacity 314 again; Wherein, the debugging that need circulate of microstrip line and electric capacity, till the index of amplifying circuit can not improve again, it was adjusted according to being that the linearity of amplifying circuit and efficient are walked by good direction, adjusted the bias voltage that can continue to optimize the debugging amplifying circuit after finishing; During the debugging bias voltage, the bias voltage of elder generation's fine tuning second level main amplifier 310 and second level booster amplifier 311, the bias voltage of main amplifier of the fine tuning first order again 315 and first order booster amplifier 316, circulation debugging repeatedly more at last, make the performance of amplifying circuit reach best, even the combination property of indexs such as the efficient of amplifying circuit, linearity, gain is best.
As shown in Figure 4, a kind of efficient linear power amplifier circuit that fourth embodiment of the invention provided, comprise first order main amplifier 415, second level main amplifier 410, first order booster amplifier 416 and second level booster amplifier 411, described first, second grade main amplifier is class ab ammplifier, described first order booster amplifier 416 is BC class A amplifier As, described second level booster amplifier 411 is C class A amplifier As, it is characterized in that: radio-frequency bridge 404, back radio-frequency bridge 412 and bias control circuit before also comprising;
An input of radio-frequency bridge 404 connects outside source before described, another input is connected in series a prime microstrip line 405, a prime electric capacity 406 successively, and two output connects the input of first order main amplifier 415 and the input of first order booster amplifier 416 respectively; In the two ends of described prime electric capacity 306, an end that connects prime microstrip line 305 is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The output of described first order main amplifier 415 connects the input of second level main amplifier 410, and the output of described first order booster amplifier 416 connects the input of second level booster amplifier 411;
The output of described second level main amplifier 410 is connected two inputs of radio-frequency bridge 312 afterwards respectively with the output of second level booster amplifier 411;
An output of described back radio-frequency bridge 412 is a signal output part, and another output is connected in series a back grade microstrip line 413, a back grade electric capacity 414 successively; In the two ends of described back level electric capacity 414, an end that connects back level microstrip line 413 is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The input of described second level booster amplifier 411 has two, and wherein the input that links to each other with first order booster amplifier 416 is a first input end, and another input is second input;
Described bias control circuit comprises wave detector 403 and bias voltage amplifier 401; The input of described wave detector 403 is connected in series an attenuator 407, a coupler 408 successively, and its output connects the input of bias voltage amplifier 401, and the output of described bias voltage amplifier 401 connects second input of second level booster amplifier 411;
The operation principle of fourth embodiment of the invention and the 3rd embodiment are similar, and its difference part is: the bias voltage by bias control circuit control second level booster amplifier 411 makes the big or small dynamic change of bias voltage with signal, thereby further raises the efficiency;
The operation principle and second embodiment of fourth embodiment of the invention control bias voltage are similar.
In the fourth embodiment of the invention, the adjustment method of each parts and the 3rd embodiment are similar.
In the various embodiments of the present invention, booster amplifier also can have a plurality of, can reach the optimum performance of amplifying circuit by each booster amplifier is carried out the control of bias voltage, further raises the efficiency.
In the various embodiments of the present invention, the power division of booster amplifier and main amplifier is 3dB, also can allow booster amplifier obtain more power during practical application.
In the various embodiments of the present invention, preceding radio-frequency bridge and back radio-frequency bridge are the 3dB quadrature bridges, also can adopt the radio-frequency bridge of other type or the radio-frequency bridge of other dB number during practical application.
Claims (5)
1. an efficient linear power amplifier circuit comprises main amplifier and booster amplifier, and described main amplifier is a class ab ammplifier, and described booster amplifier is the C class A amplifier A, it is characterized in that: radio-frequency bridge and back radio-frequency bridge before also comprising;
An input of radio-frequency bridge connects outside source before described, and another input is connected in series a prime microstrip line, a prime electric capacity successively, and two output connects the input of main amplifier and the input of booster amplifier respectively; In the two ends of described prime electric capacity, an end that connects the prime microstrip line is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The output of described main amplifier is connected two inputs of radio-frequency bridge afterwards respectively with the output of booster amplifier;
An output of described back radio-frequency bridge is a signal output part, and another output is connected in series a back grade microstrip line, a back grade electric capacity successively; In the two ends of described back level electric capacity, an end that connects back level microstrip line is a link, and the other end is a free end, and its free end is shorted to ground or open circuit.
2. efficient linear power amplifier circuit according to claim 1 is characterized in that: also comprise bias voltage control branch road; The input of described booster amplifier has two, and wherein the input that links to each other with preceding radio-frequency bridge is a first input end, and another input is second input;
Described bias control circuit comprises wave detector and bias voltage amplifier; The input of described wave detector is connected in series an attenuator, a coupler successively, and its output connects the bias voltage amplifier input terminal, and the output of described bias voltage amplifier connects second input of booster amplifier.
3. efficient linear power amplifier circuit, comprise first order main amplifier, second level main amplifier, first order booster amplifier and second level booster amplifier, described first, second grade main amplifier is class ab ammplifier, described second level booster amplifier is the C class A amplifier A, it is characterized in that: radio-frequency bridge and back radio-frequency bridge before also comprising;
An input of radio-frequency bridge connects outside source before described, and another input is connected in series a prime microstrip line, a prime electric capacity successively, and two output connects the input of first order main amplifier and the input of first order booster amplifier respectively; In the two ends of described prime electric capacity, an end that connects the prime microstrip line is a link, and the other end is a free end, and its free end is shorted to ground or open circuit;
The output of described first order main amplifier connects the input of second level main amplifier, and the output of described first order booster amplifier connects the input of second level booster amplifier;
The output of described second level main amplifier is connected two inputs of radio-frequency bridge afterwards respectively with the output of second level booster amplifier;
An output of described back radio-frequency bridge is a signal output part, and another output is connected in series a back grade microstrip line, a back grade electric capacity successively; In the two ends of described back level electric capacity, an end that connects back level microstrip line is a link, and the other end is a free end, and its free end is shorted to ground or open circuit.
4. efficient linear power amplifier circuit according to claim 3 is characterized in that: described first order booster amplifier is the BC class A amplifier A.
5. efficient linear power amplifier circuit according to claim 3 is characterized in that: also comprise bias voltage control branch road; The input of described second level booster amplifier has two, and wherein the input that links to each other with first order booster amplifier is a first input end, and another input is second input;
Described bias control circuit comprises wave detector and bias voltage amplifier; The input of described wave detector is connected in series an attenuator, a coupler successively, and its output connects amplifier input terminal, and the output of described bias voltage amplifier connects second input of second level booster amplifier.
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| CN 201010175682 CN101834571A (en) | 2010-05-13 | 2010-05-13 | Efficient linear power amplifier circuit |
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| CN103219954A (en) * | 2012-01-19 | 2013-07-24 | 联发科技股份有限公司 | Amplifier circuit and method for improving the dynamic range thereof |
| WO2015035643A1 (en) * | 2013-09-16 | 2015-03-19 | 华为技术有限公司 | Radio frequency power amplifier processing method, doherty power amplifier and wireless transceiver device |
| CN106301243A (en) * | 2015-05-22 | 2017-01-04 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of Doherty amplifier |
| CN107294498A (en) * | 2016-03-30 | 2017-10-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of asymmetric Doherty amplifiers |
| CN111510076A (en) * | 2020-05-18 | 2020-08-07 | 优镓科技(北京)有限公司 | class-AB driven Doherty power amplifier, base station and mobile terminal |
| CN113541622A (en) * | 2020-04-15 | 2021-10-22 | 深圳市大富科技股份有限公司 | Power amplification circuit, 5G communication circuit and communication equipment |
| CN115378368A (en) * | 2022-10-26 | 2022-11-22 | 成都广众科技有限公司 | Ultra-wideband solid-state power amplifier |
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| CN101350599A (en) * | 2008-08-25 | 2009-01-21 | 华为技术有限公司 | Method, apparatus and base station for amplifying power |
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| CN103219954B (en) * | 2012-01-19 | 2016-03-30 | 联发科技股份有限公司 | Amplifier circuit and improve the method for dynamic range of amplifier circuit |
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| CN105229922B (en) * | 2013-09-16 | 2018-01-09 | 华为技术有限公司 | RF power amplification processing method, Doherty power amplifier and wireless transmitting-receiving equipments |
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| CN106301243A (en) * | 2015-05-22 | 2017-01-04 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of Doherty amplifier |
| CN107294498A (en) * | 2016-03-30 | 2017-10-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of asymmetric Doherty amplifiers |
| CN107294498B (en) * | 2016-03-30 | 2020-11-06 | 中国科学院苏州纳米技术与纳米仿生研究所 | Asymmetric Doherty amplifier |
| CN113541622A (en) * | 2020-04-15 | 2021-10-22 | 深圳市大富科技股份有限公司 | Power amplification circuit, 5G communication circuit and communication equipment |
| CN111510076A (en) * | 2020-05-18 | 2020-08-07 | 优镓科技(北京)有限公司 | class-AB driven Doherty power amplifier, base station and mobile terminal |
| CN111510076B (en) * | 2020-05-18 | 2023-08-18 | 优镓科技(北京)有限公司 | class-AB driven Doherty power amplifier, base station and mobile terminal |
| CN115378368A (en) * | 2022-10-26 | 2022-11-22 | 成都广众科技有限公司 | Ultra-wideband solid-state power amplifier |
| CN115378368B (en) * | 2022-10-26 | 2023-03-21 | 成都广众科技有限公司 | Ultra-wideband solid-state power amplifier |
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Application publication date: 20100915 |