CN214900806U - Push-pull power amplification circuit, radio frequency front end module and communication terminal - Google Patents
Push-pull power amplification circuit, radio frequency front end module and communication terminal Download PDFInfo
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- CN214900806U CN214900806U CN202120661292.9U CN202120661292U CN214900806U CN 214900806 U CN214900806 U CN 214900806U CN 202120661292 U CN202120661292 U CN 202120661292U CN 214900806 U CN214900806 U CN 214900806U
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Abstract
The utility model belongs to the technical field of amplifier circuit, especially, relate to a push-pull power amplifier circuit, radio frequency front end module and communication terminal, push-pull power amplifier circuit includes elementary amplifier circuit, interstage matching circuit, secondary difference amplifier circuit and regulating circuit; the output end of the primary amplifying circuit is coupled to the input end of the interstage matching circuit; the output end of the interstage matching circuit is connected with the input end of the secondary differential amplifying circuit; the first end of the regulating circuit is connected to the interstage matching circuit, and the second end of the regulating circuit is grounded; the regulating circuit includes a first capacitor and a first resistor connected in series. The utility model discloses the introduction contains the regulating circuit of series connection's first electric capacity and first resistance, has improved push-pull power amplifier circuit's stability, improves its linearity.
Description
Technical Field
The utility model belongs to the amplifying circuit field especially relates to a push-pull power amplification circuit, radio frequency front end module and communication terminal.
Background
With the development of mobile communication technology, the demand for power amplifiers in communication systems is higher and higher. The push-pull power amplifying circuit plays an important role in a core radio frequency unit in a communication system, and the performance characteristics of the push-pull power amplifying circuit have great influence on the indexes of the whole system, particularly the characteristics of the frequency and the bandwidth of the push-pull power amplifying circuit, and influence the transmission capacity of the communication system.
At present, in the practical application process of the push-pull power amplifying circuit, the push-pull power amplifying circuit requires a wider working frequency range to be able to support a wider broadband signal, but due to the characteristics of the push-pull power amplifying circuit, the linearity and the bandwidth of the push-pull power amplifying circuit are limited by each device, so that the linearity of the push-pull power amplifying circuit is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the problem of the push-pull power amplifier circuit poor linearity in the process of amplifying the high-frequency radio-frequency signal is solved.
In order to solve the above technical problem, an embodiment of the present invention provides a push-pull power amplifier circuit, which includes a primary amplifier circuit, an interstage matching circuit, a secondary differential amplifier circuit, and a regulating circuit;
an output of the primary amplification circuit is coupled to an input of the interstage matching circuit;
the output end of the interstage matching circuit is connected with the input end of the secondary differential amplifying circuit;
a first end of the regulating circuit is connected to the interstage matching circuit, and a second end of the regulating circuit is grounded;
the regulating circuit includes a first capacitor and a first resistor connected in series.
Optionally, the interstage matching circuit comprises an interstage balun comprising a first balun input, a second balun input, a first balun output and a second balun output; the first balun input end is connected with a power supply end or a ground end, the second balun input end is connected with the output end of the primary amplification circuit, and the first balun output end and the second balun output end are respectively connected with the input end of the secondary differential amplification circuit.
Optionally, the first terminal of the regulating circuit is connected to the first balun input terminal; or the first end of the regulating circuit is connected to the second balun input end; or, the first end of the regulating circuit is connected to the first balun output end; or, the first end of the regulating circuit is connected to the second balun output end.
Optionally, the adjusting circuit includes any at least two of a first adjusting circuit, a second adjusting circuit, a third adjusting circuit and a fourth adjusting circuit; the first end of the first regulating circuit is connected to the first balun input end; the first end of the second regulating circuit is connected to the second balun input end; the first end of the third regulation and regulation circuit is connected to the first balun output end; and the first end of the fourth regulating circuit is connected to the second balun output end.
Optionally, the inter-stage matching circuit comprises an inter-stage capacitor and an inter-stage inductor, a first end of the inter-stage capacitor is connected with the output end of the primary amplifying circuit, a second end of the inter-stage capacitor is connected with the input end of the secondary differential amplifying circuit and the first end of the inter-stage inductor respectively, and the second end of the inter-stage inductor is grounded.
Optionally, the first terminal of the regulating circuit is connected to the first terminal of the inter-stage capacitance; alternatively, the first terminal of the regulating circuit is connected to the second terminal of the inter-stage capacitor.
Optionally, the adjusting circuit comprises a first adjusting circuit and a second adjusting circuit; a first terminal of the first regulating circuit is connected to a first terminal of the inter-stage capacitor; the first end of the second regulating circuit is connected to the second end of the inter-stage capacitor.
Optionally, the primary amplification circuit comprises a first primary amplification transistor, the secondary differential amplification circuit comprises a first secondary amplification transistor and a second secondary amplification transistor, an output of the first primary amplification transistor is coupled to an input of the inter-stage matching circuit, and an output of the inter-stage matching circuit is connected to an input of the first secondary amplification transistor and an input of the second secondary amplification transistor, respectively.
Optionally, the primary amplifying circuit comprises a first primary amplifying transistor and a second primary amplifying transistor, the secondary differential amplifying circuit comprises a first secondary amplifying transistor and a second secondary amplifying transistor, an output of the first primary amplifying transistor and an output of the second primary amplifying transistor are respectively coupled to an input of the inter-stage matching circuit, and an output of the inter-stage matching circuit is respectively connected to an input of the first secondary amplifying transistor and an input of the second secondary amplifying transistor.
Optionally, the adjusting circuit further comprises a first inductor connected in series with the first capacitor and the first resistor.
The utility model also provides a push-pull power amplifying circuit, which comprises a primary amplifying circuit, an interstage matching circuit, a secondary differential amplifying circuit and a regulating circuit; an output of the primary amplification circuit is coupled to an input of the interstage matching circuit; the output end of the interstage matching circuit is connected with the input end of the secondary differential amplifying circuit; a first end of the regulating circuit is connected to the interstage matching circuit, and a second end of the regulating circuit is grounded; the regulating circuit includes a first capacitor and a first resistor connected in series. The utility model discloses introduce the regulating circuit who contains series connection's first electric capacity and first resistance in push-pull power amplifier circuit to realize the impedance match in the wide band, widened the frequency band broad range of adaptation, and further improved push-pull power amplifier circuit's amplitude mismatch and phase place imbalance, thereby improved push-pull power amplifier circuit's linearity, improved push-pull power amplifier circuit's stability.
Drawings
Fig. 1 is a schematic structural diagram of a push-pull power amplifying circuit according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a push-pull power amplifying circuit according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a push-pull power amplifying circuit according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a push-pull power amplifying circuit according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a push-pull power amplifying circuit according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a push-pull power amplifying circuit according to a sixth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a push-pull power amplifying circuit according to a seventh embodiment of the present invention;
fig. 8 is a schematic structural diagram of a push-pull power amplifying circuit according to an eighth embodiment of the present invention.
The reference numerals in the specification are as follows:
1. a primary amplification circuit; 11. a first primary amplifying transistor; 12. a second primary amplifying transistor; 2. an interstage matching circuit; 21. an interstage balun; 22. an inter-stage capacitance; 23. an inter-stage inductance; 3. a secondary differential amplifying circuit; 31. a first secondary amplifying transistor; 32. a second secondary amplifying transistor; 4. a regulating circuit; 41. a first capacitor; 42. a first resistor; 43. a first inductor.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, an embodiment of the present invention provides a push-pull power amplifier circuit, which includes a primary amplifier circuit 1, an interstage matching circuit 2, a secondary differential amplifier circuit 3, and a regulating circuit 4.
An output end of the primary amplifying circuit 1 is coupled to an input end of the inter-stage matching circuit 2, understandably, an input end of the primary amplifying circuit 1 receives a radio frequency signal, a frequency band of the radio frequency signal may be an N77 frequency band, an N79 frequency band, and the like, the primary amplifying circuit 1 amplifies the received radio frequency signal, and transmits the amplified radio frequency signal to an input end of the inter-stage matching circuit 2 through an output end of the primary amplifying circuit 1, the primary amplifying circuit 1 is configured to amplify the received radio frequency signal, and the primary amplifying circuit 1 may be set according to a requirement, for example, the primary amplifying circuit 1 is an NPN type triode or a PNP type triode, and the like.
The output end of the inter-stage matching circuit 2 is connected to the input end of the secondary differential amplifying circuit 3, understandably, the inter-stage matching circuit 2 is used for realizing impedance conversion of the primary amplifying circuit 1 and the secondary differential amplifying circuit 3, the inter-stage matching circuit 2 can be set according to requirements, for example, the inter-stage matching circuit 2 can select a matching component or a topology of a matching circuit including the matching component, wherein the matching component can be a balun, a capacitor, an inductor, or the like. The present embodiment does not specifically limit the specific structure of the interstage matching circuit 2, and is applicable to any matching circuit.
A first terminal of the adjusting circuit 4 is connected to the inter-stage matching circuit 2, and a second terminal of the adjusting circuit 4 is grounded. Specifically, the connection of the first terminal of the adjusting circuit 4 to the interstage matching circuit 2 may be: an input of the inter-stage matching circuit, or an output of the inter-stage matching circuit, etc. It should be noted that the adjusting circuit 4 provided by an embodiment of the present invention may include one or more circuits. Such as: the adjusting circuit 4 includes a first adjusting circuit and a second adjusting circuit. Wherein a first regulating circuit is coupled to an input of the inter-stage matching circuit and a second regulating circuit is coupled to an output of the inter-stage matching circuit. Understandably, the adjusting circuit 4 includes a first terminal and a second terminal, and the adjusting circuit 4 can make the inter-stage matching circuit 2 more convergent in the process of performing impedance transformation on the radio frequency signal, that is, can make the impedance output by the primary amplifying circuit 1 capacitive rather than inductive, and can make the impedance received by the secondary amplifying circuit input capacitive rather than inductive, because the capacitive is more adapted to the radio frequency circuit, the radio frequency signal can be better transmitted, and therefore, the impedance transformation can be configured as bandwidth, so as to implement impedance matching in a wider wide frequency band.
The adjusting circuit 4 includes a first capacitor 41 and a first resistor 42 connected in series, and understandably, the adjusting circuit 4 is an RC circuit, the series connection manner of the first capacitor 41 and the first resistor 42 is not limited, the capacitance value of the first capacitor 41 and the resistance value of the first resistor 42 can be set according to requirements, for example, the capacitance value of the first capacitor 41 is 10pF, 0.1 μ F, etc., the resistance value of the first resistor 42 is 1 ohm, 10 ohm, etc., by the adjusting circuit 4, the reflected power of the radio frequency signal occurring in the transmission process can be consumed, so that the radio frequency signal is smoothly converted through the inter-stage balun 21, and the paths of time shift and frequency shift are reduced according to hartley theorem.
The utility model discloses a push-pull power amplifying circuit, which comprises a primary amplifying circuit 1, an interstage matching circuit 2, a secondary differential amplifying circuit 3 and a regulating circuit 4; an output terminal of the primary amplifying circuit 1 is coupled to an input terminal of the inter-stage matching circuit 2; the output end of the interstage matching circuit 2 is connected with the input end of the secondary differential amplifying circuit 3; a first end of the regulating circuit 4 is connected to the interstage matching circuit 2, and a second end of the regulating circuit 4 is grounded; adjusting circuit 4 includes series connection's first electric capacity 41 and first resistance 42, so, the utility model discloses introduce the adjusting circuit 4 that contains series connection's first electric capacity 41 and first resistance 42 in push-pull power amplifier circuit to realize the impedance match in the wide band, widened the frequency bandwidth scope of adaptable, and further improved push-pull power amplifier circuit's amplitude mismatch and phase imbalance, thereby improved push-pull power amplifier circuit's linearity, improved push-pull power amplifier circuit's stability.
In one embodiment, as shown in fig. 2, the interstage matching circuit 2 comprises an interstage balun 21, and the interstage balun 21 comprises a first balun input terminal, a second balun input terminal, a first balun output terminal and a second balun output terminal; the first balun input end is connected with a power supply end or a ground end, the second balun input end is connected with the output end of the primary amplification circuit 1, and the first balun output end and the second balun output end are respectively connected with the input end of the secondary differential amplification circuit 3.
Understandably, the power supply terminal is connected to a power supply provided to the push-pull power amplifying circuit, and a voltage value of the power supply can be set according to requirements, such as: the voltage value of the power supply is 3.4V, 4.2V or 3-6V and the like. The interstage balun 21 is an electronic component or circuit for broadband radio frequency transmission, which realizes connection of a balanced transmission line circuit and an unbalanced transmission line circuit by converting a matching input into a differential output, and the interstage balun 21 functions to enable a push-pull power amplification circuit to have different impedances or to be compatible with the secondary differential amplification circuit 3 so as to convert a single-ended radio frequency signal into a double-ended radio frequency signal, receive the radio frequency signal output from the output terminal of the primary amplification circuit 1 through the second balun input terminal, convert the radio frequency signal into a double-ended radio frequency signal through the interstage balun 21, and output the double-ended radio frequency signal to the input terminal of the secondary differential amplification circuit 3 through the first balun output terminal and the second balun output terminal, respectively.
In one embodiment, as shown in fig. 2 to 5, the first terminal of the adjusting circuit 4 is connected to the first balun input terminal, or the first terminal of the adjusting circuit 4 is connected to the second balun input terminal, or the first terminal of the adjusting circuit 4 is connected to the first balun output terminal; alternatively, the first terminal of the adjusting circuit 4 is connected to the second balun output terminal.
In another embodiment, the adjusting circuit 4 includes any at least two of a first adjusting circuit, a second adjusting circuit, a third adjusting circuit, and a fourth adjusting circuit; the first end of the first regulating circuit is connected to the first balun input end; the first end of the second regulating circuit is connected to the second balun input end; the first end of the third regulating circuit is connected to the first balun output end; and the first end of the fourth regulating circuit is connected to the second balun output end.
Understandably, the push-pull power amplifying circuit may comprise at least one adjusting circuit 4, such as: the adjusting circuit comprises a first adjusting circuit, a second adjusting circuit, a third adjusting circuit and a fourth adjusting circuit, wherein a first end of any one of the adjusting circuits 4 can be connected to the first balun input end, the second balun input end, the first balun output end or the second balun output end, and the adjusting circuit 4 can consume reflected power of a radio-frequency signal in a transmission process, so that the radio-frequency signal is subjected to smooth conversion through the interstage balun 21.
In one embodiment, as shown in fig. 6, the inter-stage matching circuit 2 includes an inter-stage capacitor 22 and an inter-stage inductor 23, a first end of the inter-stage capacitor 22 is connected to the output end of the primary amplification circuit 1, a second end of the inter-stage capacitor 22 is connected to the input end of the secondary differential amplification circuit 3 and a first end of the inter-stage inductor 23, respectively, and a second end of the inter-stage inductor 23 is grounded, so that the inter-stage capacitor 22 and the inter-stage inductor 23 constitute an LC circuit, and impedance conversion performed by the LC circuit can reduce a circuit layout space, save a substrate and wiring cost, and simplify the inter-stage matching circuit 2.
In one embodiment, a first terminal of the regulating circuit 4 is connected to a first terminal of the inter-stage capacitor 22; alternatively, the first terminal of the adjusting circuit 4 is connected to the second terminal of the inter-stage capacitor 22.
In another embodiment, the push-pull power amplification circuit includes a first regulation circuit and a second regulation circuit; a first terminal of the first regulating circuit is connected to a first terminal of the inter-stage capacitor; the first end of the second regulating circuit is connected to the second end of the inter-stage capacitor.
Understandably, the adjusting circuit 4 can consume the reflected power of the radio frequency signal in the transmission process of the inter-stage capacitor 22 and the inter-stage inductor 23, so that the radio frequency signal is smoothly converted, according to the hartley theorem, the paths of time shift and frequency shift are reduced, and the stability of the push-pull power amplifying circuit is improved, thereby further improving the amplitude imbalance and the phase imbalance of the push-pull power amplifying circuit, and finally improving the linearity of the push-pull power amplifying circuit.
In one embodiment, as shown in fig. 1, the primary amplifying circuit 1 includes a first primary amplifying transistor 11, the secondary differential amplifying circuit 3 includes a first secondary amplifying transistor 31 and a second secondary amplifying transistor 32, an output terminal of the first primary amplifying transistor 11 is coupled to an input terminal of the inter-stage matching circuit 2, and an output terminal of the inter-stage matching circuit 2 is connected to an input terminal of the first secondary amplifying transistor 31 and an input terminal of the second secondary amplifying transistor 32, respectively.
Understandably, the first primary amplifying transistor 11 can be set according to the requirement, such as the first primary amplifying transistor 11 is an NPN transistor, a PNP transistor, etc., in an embodiment, the first primary amplifying transistor 11 is an NPN transistor, the collector of the first primary amplifying transistor 11 is connected to the input terminal of the inter-stage matching circuit 2, the base of the first primary amplifying transistor 11 receives the radio frequency signal, the emitter of the first primary amplifying transistor 11 is grounded, and the first secondary amplifying transistor 31 and the second secondary amplifying transistor 32 can be set according to the requirement, such as the first secondary amplifying transistor 31 is an NPN transistor and the second secondary amplifying transistor 32 is a PNP transistor; the first secondary amplifying transistor 31 is a PNP transistor, the second secondary amplifying transistor 32 is an NPN transistor, in an embodiment, the first secondary amplifying transistor 31 is an NPN transistor, the second secondary amplifying transistor 32 is a PNP transistor, a base of the first secondary amplifying transistor 31 and a base of the second secondary amplifying transistor 32 are respectively connected to the output terminal of the inter-stage matching circuit 2, an emitter of the first secondary amplifying transistor 31 is grounded, a collector of the second secondary amplifying transistor 32 is grounded, and a radio frequency signal with two ends is output through the collector of the first secondary amplifying transistor and the emitter of the second secondary amplifying transistor 32, so that a single-ended radio frequency signal is converted into a radio frequency signal with two ends, electronic components are reduced, and the cost of a circuit board is saved, and the stability of the push-pull power amplifying circuit is improved through the regulating circuit, so that the amplitude imbalance and the phase imbalance of the push-pull power amplifying circuit are further improved, and the linearity of the push-pull power amplifying circuit is finally improved.
In one embodiment, as shown in fig. 8, the primary amplification circuit 1 includes a first primary amplification transistor 11 and a second primary amplification transistor 12, the secondary differential amplification circuit 3 includes a first secondary amplification transistor 31 and a second secondary amplification transistor 32, an output terminal of the first primary amplification transistor 11 and an output terminal of the second primary amplification transistor 12 are respectively coupled to an input terminal of the inter-stage matching circuit 2, and an output terminal of the inter-stage matching circuit 2 is respectively connected to an input terminal of the first secondary amplification transistor 31 and an input terminal of the second secondary amplification transistor 32.
Understandably, the first primary amplifying transistor 11 and the second primary amplifying transistor 12 can be set according to the requirement, for example, the first primary amplifying transistor 11 and the second primary amplifying transistor 12 are both NPN transistors or PNP transistors, etc., and the first primary amplifying transistor 11 and the second primary amplifying transistor 12 can amplify the input rf signal to improve the amplification gain and widen the bandwidth, thereby improving the performance of the push-pull power amplifying circuit, in one embodiment, the first primary amplifying transistor 11 and the second primary amplifying transistor 12 are both NPN transistors, the collector of the first primary amplifying transistor 11 is connected to the input terminal of the inter-stage matching circuit 2, the collector of the second primary amplifying transistor 12 is connected to the input terminal of the inter-stage matching circuit 2, the emitter of the first primary amplification transistor 11 and the emitter of the second primary amplification transistor 12 are grounded.
The first secondary amplification transistor 31 and the second secondary amplification transistor 32 may be set according to requirements, for example, the first secondary amplification transistor 31 is an NPN transistor, and the second secondary amplification transistor 32 is a PNP transistor; the first secondary amplifying transistor 31 is a PNP transistor, the second secondary amplifying transistor 32 is an NPN transistor, in an embodiment, the first secondary amplifying transistor 31 is an NPN transistor, the second secondary amplifying transistor 32 is a PNP transistor, a base of the first secondary amplifying transistor 31 and a base of the second secondary amplifying transistor 32 are respectively connected to the output terminal of the inter-stage matching circuit 2, an emitter of the first secondary amplifying transistor 31 is grounded, a collector of the second secondary amplifying transistor 32 is grounded, and a radio frequency signal with two ends is output through the collector of the first secondary amplifying transistor and the emitter of the second secondary amplifying transistor 32, so that the stability of the push-pull power amplifying circuit is improved through the adjusting circuit, thereby further improving amplitude mismatch and phase mismatch of the push-pull power amplifying circuit, finally, the linearity of the push-pull power amplifying circuit is improved. .
In an embodiment, as shown in fig. 7, the adjusting circuit 4 further includes a first inductor 43 connected in series with the first capacitor 41 and the first resistor 42, and understandably, an inductance value of the first inductor 43 can be set according to requirements, in an embodiment, one end of the first capacitor 41 is connected to the first end of the adjusting circuit 4, the other end of the first capacitor 41 is connected to one end of the first inductor 43, the other end of the first inductor 43 is connected to one end of the first resistor 42, and the other end of the first resistor 42 is connected to ground, so that the first inductor 43 and the first capacitor 41 form an LC circuit, and the LC oscillating circuit can stabilize a modulation bandwidth and improve stability of the push-pull power amplifying circuit.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A push-pull power amplifying circuit is characterized by comprising a primary amplifying circuit, an interstage matching circuit, a secondary differential amplifying circuit and a regulating circuit;
an output of the primary amplification circuit is coupled to an input of the interstage matching circuit;
the output end of the interstage matching circuit is connected with the input end of the secondary differential amplifying circuit;
a first end of the regulating circuit is connected to the interstage matching circuit, and a second end of the regulating circuit is grounded;
the regulating circuit includes a first capacitor and a first resistor connected in series.
2. The push-pull power amplification circuit of claim 1, wherein the interstage matching circuit comprises an interstage balun comprising a first balun input, a second balun input, a first balun output, and a second balun output; the first balun input end is connected with a power supply end or a ground end, the second balun input end is connected with the output end of the primary amplification circuit, and the first balun output end and the second balun output end are respectively connected with the input end of the secondary differential amplification circuit.
3. Push-pull power amplification circuitry as claimed in claim 2, wherein the first terminal of the regulating circuit is connected to the first balun input; or the first end of the regulating circuit is connected to the second balun input end; or, the first end of the regulating circuit is connected to the first balun output end; or, the first end of the regulating circuit is connected to the second balun output end.
4. The push-pull power amplification circuit of claim 2, wherein the regulation circuit comprises any at least two of a first regulation circuit, a second regulation circuit, a third regulation circuit, and a fourth regulation circuit;
the first end of the first regulating circuit is connected to the first balun input end;
the first end of the second regulating circuit is connected to the second balun input end;
the first end of the third regulating circuit is connected to the first balun output end;
and the first end of the fourth regulating circuit is connected to the second balun output end.
5. Push-pull power amplification circuit as claimed in claim 1, characterized in that the inter-stage matching circuit comprises an inter-stage capacitance and an inter-stage inductance, a first end of the inter-stage capacitance being connected to the output of the primary amplification circuit, a second end of the inter-stage capacitance being connected to the input of the secondary differential amplification circuit and to the first end of the inter-stage inductance, respectively, a second end of the inter-stage inductance being connected to ground.
6. Push-pull power amplification circuit as claimed in claim 5,
a first terminal of the regulating circuit is connected to a first terminal of the inter-stage capacitance; alternatively, the first terminal of the regulating circuit is connected to the second terminal of the inter-stage capacitor.
7. The push-pull power amplification circuit of claim 5, wherein the regulation circuit comprises a first regulation circuit and a second regulation circuit;
a first terminal of the first regulating circuit is connected to a first terminal of the inter-stage capacitor;
the first end of the second regulating circuit is connected to the second end of the inter-stage capacitor.
8. Push-pull power amplification circuit as claimed in claim 1 wherein the primary amplification circuit comprises a first primary amplification transistor, the secondary differential amplification circuit comprises a first secondary amplification transistor and a second secondary amplification transistor, an output of the first primary amplification transistor is coupled to an input of the inter-stage matching circuit, an output of the inter-stage matching circuit is connected to an input of the first secondary amplification transistor and an input of the second secondary amplification transistor, respectively.
9. Push-pull power amplification circuit as claimed in claim 1 wherein the primary amplification circuit comprises a first primary amplification transistor and a second primary amplification transistor, the secondary differential amplification circuit comprises a first secondary amplification transistor and a second secondary amplification transistor, an output of the first primary amplification transistor and an output of the second primary amplification transistor are coupled to an input of the inter-stage matching circuit, respectively, an output of the inter-stage matching circuit is connected to an input of the first secondary amplification transistor and an input of the second secondary amplification transistor, respectively.
10. Push-pull power amplification circuit as claimed in any one of claims 1-9 wherein the adjustment circuit further comprises a first inductance in series with the first capacitance and the first resistance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120661292.9U CN214900806U (en) | 2021-03-31 | 2021-03-31 | Push-pull power amplification circuit, radio frequency front end module and communication terminal |
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| CN202120661292.9U CN214900806U (en) | 2021-03-31 | 2021-03-31 | Push-pull power amplification circuit, radio frequency front end module and communication terminal |
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| CN214900806U true CN214900806U (en) | 2021-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114978070A (en) * | 2022-04-24 | 2022-08-30 | 锐石创芯(深圳)科技股份有限公司 | Push-pull power amplifying circuit |
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2021
- 2021-03-31 CN CN202120661292.9U patent/CN214900806U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114978070A (en) * | 2022-04-24 | 2022-08-30 | 锐石创芯(深圳)科技股份有限公司 | Push-pull power amplifying circuit |
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Address after: 518000 room 2001, building 3, Shenzhen new generation industrial park, 136 Zhongkang Road, Meidu community, Meilin street, Futian District, Shenzhen City, Guangdong Province Patentee after: Ruishi Chuangxin (Shenzhen) Technology Co.,Ltd. Address before: 518000 room 2001, building 3, Shenzhen new generation industrial park, 136 Zhongkang Road, Meidu community, Meilin street, Futian District, Shenzhen City, Guangdong Province Patentee before: AN ADVANCED RF POWER AMPLIFIER AND COMMUNICATION DEVICE |
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