CN117353672A - Power amplifier circuit - Google Patents
Power amplifier circuit Download PDFInfo
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- CN117353672A CN117353672A CN202311331977.7A CN202311331977A CN117353672A CN 117353672 A CN117353672 A CN 117353672A CN 202311331977 A CN202311331977 A CN 202311331977A CN 117353672 A CN117353672 A CN 117353672A
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- capacitor
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- transistor
- inductor
- matching circuit
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- 239000003990 capacitor Substances 0.000 claims description 184
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a power amplifier circuit, comprising: the input port, the input matching circuit, the first stage transistor, the first stage and second stage interstage matching circuit, the second stage transistor, the second stage and third stage interstage matching circuit, the third stage transistor, the output matching circuit and the output port; the input port is connected with one end of the input matching circuit; the other end of the input matching circuit is connected with the input end of the first-stage transistor; the output end of the first-stage transistor is connected with one end of the first-stage and second-stage interstage matching circuit; the other end of the first-stage and second-stage interstage matching circuit is connected with the input end of the second-stage transistor; the output end of the second-stage transistor is connected with one end of the second-stage and third-stage interstage matching circuit; the other ends of the second-stage and third-stage interstage matching circuits are connected with the input end of a third-stage transistor; the output end of the third-stage transistor is connected with one end of the output matching circuit; the other end of the output matching circuit is connected with the output port. The invention can improve the efficiency of the power amplifier.
Description
Technical Field
The present invention relates to the field of radio technology, and more particularly, to a power amplifier circuit.
Background
The T/R component refers to the portion between the number and the antenna in a wireless transceiver system, where the transmit channel is mainly used to amplify weak signals to sufficient power and then transmit through the antenna. The emission efficiency of the T/R component directly influences the efficiency of the system and the heat dissipation system, and the high-efficiency amplifier can improve the energy utilization efficiency of the whole system and reduce the burden on the heat dissipation system.
The core of the transmitting channel is a power amplifier chip, and the efficiency of the transmitting channel of the T/R component directly influences the transmitting efficiency of the transmitting channel and the efficiency of the whole system, so that the efficiency of the power amplifier needs to be improved, the energy utilization efficiency of the system can be improved, the pressure on the whole power supply system is reduced, and the requirement on a heat dissipation system is reduced.
Disclosure of Invention
The invention aims to provide a power amplifier circuit which can improve the efficiency of a power amplifier, reduce the pressure on a power supply system and reduce the requirement on a heat dissipation system.
One aspect of the present invention provides a power amplifier circuit comprising: the input port, the input matching circuit, the first stage transistor, the first stage and second stage interstage matching circuit, the second stage transistor, the second stage and third stage interstage matching circuit, the third stage transistor, the output matching circuit and the output port;
the input port is connected with one end of the input matching circuit;
the other end of the input matching circuit is connected with the input end of the first-stage transistor;
the output end of the first-stage transistor is connected with one end of the first-stage and second-stage interstage matching circuit;
the other end of the first-stage and second-stage interstage matching circuit is connected with the input end of the second-stage transistor;
the output end of the second-stage transistor is connected with one end of the second-stage and third-stage interstage matching circuit;
the other ends of the second-stage and third-stage interstage matching circuits are connected with the input end of the third-stage transistor;
the output end of the third-stage transistor is connected with one end of the output matching circuit;
the other end of the output matching circuit is connected with the output port.
Preferably, the first stage transistor comprises a first transistor, and the input matching circuit comprises first to fourth capacitances, a first inductance, a second inductance and first to third resistances;
the input port is connected with one end of a first resistor, the other end of the first resistor is connected with one end of a first capacitor, the other end of the first capacitor is connected with one end of a first inductor and one end of a second capacitor, the other end of the first capacitor is grounded, the other end of the second capacitor is connected with one end of a second resistor, a third capacitor and a third resistor, the other end of the third capacitor and the other end of the second resistor are connected with the input end of a first transistor, the other end of the third resistor is connected with one end of a second inductor, the other end of the second inductor is connected with one end of a fourth capacitor and grid voltage, and the other end of the fourth capacitor is grounded.
Preferably, the second-stage transistor comprises a second transistor, and the first-stage and second-stage inter-stage matching circuit comprises fifth to eighth capacitors, a fourth resistor, a fifth resistor, a third inductor and a fourth inductor;
the output end of the first transistor is connected with one end of a fifth capacitor and one end of a third inductor, the other end of the third inductor is connected with one end of a sixth capacitor and drain voltage, the other end of the sixth capacitor is grounded, the other end of the fifth capacitor is connected with one end of a seventh capacitor and one end of a fourth resistor, the other ends of the seventh capacitor and the fourth resistor are connected with one end of the fifth resistor and the input end of the second transistor, the other end of the fifth resistor is connected with one end of the fourth inductor, the other end of the fourth inductor is connected with one end of an eighth capacitor and gate voltage, and the other end of the eighth capacitor is grounded.
Preferably, the third-stage transistor comprises third to sixth transistors, and the second-stage and third-stage inter-stage matching circuit comprises ninth to nineteenth capacitances, sixth to ninth resistances, and fifth to tenth inductances;
the output end of the second transistor is connected with one end of a fifth inductor, a sixth inductor, an eleventh capacitor, a twelfth capacitor and a thirteenth capacitor, the other end of the fifth inductor is connected with one end of a ninth capacitor and drain voltage, the other end of the ninth capacitor is grounded, the other end of the sixth inductor is connected with one end of the tenth capacitor and drain voltage, the other end of the tenth capacitor is grounded, the other end of the thirteenth capacitor is grounded, the other end of the eleventh capacitor is connected with the input end of the fourteenth capacitor, the sixth resistor, one end of the seventh resistor, the third transistor and the fourth transistor, the other end of the fourteenth capacitor is grounded, the other end of the sixth resistor is connected with one end of the seventh inductor, the other end of the seventh inductor is connected with one end of the sixteenth capacitor and gate voltage, the other end of the sixteenth capacitor is grounded, the other end of the seventh resistor is connected with one end of the eighth inductor, the other end of the eighth inductor is connected with one end of the seventeenth capacitor and eighteenth capacitor, the other end of the seventeenth capacitor is grounded, the other end of the seventeenth capacitor and the eighteenth capacitor is grounded, the other end of the twelfth capacitor is connected with the fifteenth capacitor, the other end of the nineteenth capacitor and the nineteenth capacitor is connected with the nineteenth capacitor and the other end of the nineteenth capacitor is grounded.
Preferably, the output matching circuit comprises twentieth capacitance, twenty-third capacitance, eleventh inductance and twelfth inductance;
the output ends of the third transistor, the fourth transistor, the fifth transistor and the sixth transistor are connected with one ends of a twelfth inductor, an eleventh inductor, a twenty-second capacitor and a twenty-third capacitor, the other end of the twelfth inductor is connected with one end of a twenty-first capacitor and drain voltage, the other end of the twenty-first capacitor is grounded, the other end of the eleventh inductor is connected with one end of the twentieth capacitor and drain voltage, the other end of the twentieth capacitor is grounded, the other end of the twenty-second capacitor is grounded, and the other end of the twenty-third capacitor is connected with an output port.
According to the power amplifier circuit provided by the invention, the efficiency of the power amplifier can be improved, the pressure on a power supply system is reduced, and the requirement on a heat dissipation system is reduced.
Drawings
For a clearer description of the technical solutions of the present invention, the following description will be given with reference to the attached drawings used in the description of the embodiments of the present invention, it being obvious that the attached drawings in the following description are only some embodiments of the present invention, and that other attached drawings can be obtained by those skilled in the art without the need of inventive effort:
fig. 1 is a schematic diagram of a power amplifier circuit according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of the present invention provides a power amplifier circuit including: the input port, the input matching circuit, the first stage transistor, the first stage and second stage interstage matching circuit, the second stage transistor, the second stage and third stage interstage matching circuit, the third stage transistor, the output matching circuit and the output port;
the input port is connected with one end of the input matching circuit;
the other end of the input matching circuit is connected with the input end of the first-stage transistor;
the output end of the first-stage transistor is connected with one end of the first-stage and second-stage interstage matching circuit;
the other end of the first-stage and second-stage interstage matching circuit is connected with the input end of the second-stage transistor;
the output end of the second-stage transistor is connected with one end of the second-stage and third-stage interstage matching circuit;
the other ends of the second-stage and third-stage interstage matching circuits are connected with the input end of the third-stage transistor;
the output end of the third-stage transistor is connected with one end of the output matching circuit;
the other end of the output matching circuit is connected with the output port.
Fig. 1 is a schematic diagram of a power amplifier circuit according to an embodiment of the invention. In the embodiment of fig. 1, the first stage transistor includes a first transistor M1, and the input matching circuit includes four capacitors (first capacitor C1 to fourth capacitor C4), 2 inductors (first inductor L1, second inductor L2), and 3 resistors (first resistor R1 to third resistor R3). The input port RFin is connected with one end of a first resistor R1, the other end of the first resistor R1 is connected with one end of a first capacitor C1, the other end of the first capacitor C1 is connected with one end of a first inductor L1 and one end of a second capacitor C2, the other end of the first inductor L1 is grounded, the other end of the second capacitor C2 is connected with one end of a second resistor R2, a third capacitor C3 and one end of a third resistor R3, the other end of the third capacitor C3 and the other end of the second resistor R2 are connected with the input end of the first transistor M1, the other end of the third resistor R3 is connected with one end of a second inductor L2, the other end of the second inductor L2 is connected with one end of a fourth capacitor C4 and a gate voltage Vg, and the other end of the fourth capacitor C4 is grounded.
In fig. 1, one end of a first resistor R1 is used as one end of the input matching circuit, the other ends of a third capacitor C3 and a second resistor R2 are used as the other ends of the input matching circuit, and the input end of a first transistor M1 is used as the input end of the first stage transistor.
The second-stage transistor comprises a second transistor M2, and the first-stage and second-stage interstage matching circuit comprises 4 capacitors (a fifth capacitor C5-an eighth capacitor C8), 2 resistors (a fourth resistor R4 and a fifth resistor R5) and 2 inductors (a third inductor L3 and a fourth inductor L4). The output end of the first transistor M1 is connected to one end of the fifth capacitor C5 and one end of the third inductor L3, the other end of the third inductor L3 is connected to one end of the sixth capacitor C6 and the drain voltage Vd, the other end of the sixth capacitor C6 is grounded, the other end of the fifth capacitor C5 is connected to one end of the seventh capacitor C7 and one end of the fourth resistor R4, the other ends of the seventh capacitor C7 and the fourth resistor R4 are connected to one end of the fifth resistor R5 and the input end of the second transistor M2, the other end of the fifth resistor R5 is connected to one end of the fourth inductor L4, the other end of the fourth inductor L4 is connected to one end of the eighth capacitor C8 and the gate voltage Vg, and the other end of the eighth capacitor C8 is grounded.
In fig. 1, the output terminal of the first transistor M1 is used as the output terminal of the first stage transistor, one end of the fifth capacitor C5 and one end of the third inductor L3 are used as one ends of the first stage and second stage inter-stage matching circuit, the other ends of the seventh capacitor C7 and the fourth resistor R4 are used as the other ends of the first stage and second stage inter-stage matching circuit, and the input terminal of the second transistor M2 is used as the input terminal of the second stage transistor.
The third-stage transistor comprises third to sixth transistors M3 to M6, and the second-stage and third-stage inter-stage matching circuit comprises 11 capacitors (ninth to nineteenth capacitors C9 to C19), 4 resistors (sixth to ninth resistors R6 to R9) and six inductors (fifth to tenth inductors L5 to L10). The output end of the second transistor M2 is connected to one end of a fifth inductor L5, a sixth inductor L6, an eleventh capacitor C11, a twelfth capacitor C12 and a thirteenth capacitor C13, the other end of the fifth inductor L5 is connected to one end of a ninth capacitor C9 and a drain voltage Vd, the other end of the ninth capacitor C9 is grounded, the other end of the sixth inductor L6 is connected to one end of the tenth capacitor C10 and a drain voltage Vd, the other end of the tenth capacitor C10 is grounded, the other end of the thirteenth capacitor C13 is grounded, the other end of the eleventh capacitor C11 is connected to the input end of a fourteenth capacitor C14, a sixth resistor R6, one end of a seventh resistor R7, the other end of the third transistor M3 and the thirteenth capacitor M4 are connected to the input end of the eighth capacitor C9, the other end of the eighth capacitor C9 is grounded, the other end of the eighth capacitor C9 is connected to the seventeenth capacitor C9, the other end of the seventeenth capacitor C8, the seventeenth capacitor C17 is connected to the seventeenth capacitor C9, the other end of the seventeenth capacitor C9 is connected to the seventeenth capacitor C8, the seventeenth capacitor C17 is connected to the seventeenth capacitor C9, the other end of the seventeenth capacitor C8 is connected to the seventeenth capacitor C9, the seventeenth capacitor C9 is connected to the seventeenth capacitor C18, the other end of the seventeenth capacitor C9 is connected to the seventeenth capacitor C9, the seventeenth capacitor C18 is connected to the seventeenth capacitor C9, the other end of the seventeenth capacitor C9 is connected to the seventeenth capacitor C9, the seventeenth capacitor is connected to the seventeenth capacitor C, one end of the eighteenth capacitor C18 is connected.
In fig. 1, the output terminal of the second transistor M2 is used as the output terminal of the second stage transistor, one ends of a fifth inductor L5, a sixth inductor L6, an eleventh capacitor C11, a twelfth capacitor C12 and a thirteenth capacitor C13 are used as one ends of the second stage and third stage interstage matching circuit, one ends of a fifteenth capacitor C15, an eighth resistor R8 and a ninth resistor R9 and one ends of a fourteenth capacitor C14, a sixth resistor R6 and a seventh resistor R7 are used as the other ends of the second stage and third stage interstage matching circuit, and the input terminals of the third transistor M3 to the sixth transistor M6 are used as the input terminals of the third stage transistor.
The output matching circuit includes 4 capacitors (twenty-first capacitor C20 to twenty-third capacitor C23) and two inductors (eleventh inductor L11 and twelfth inductor L12). The output terminals of the third transistor M3, the fourth transistor M4, the fifth transistor M5, and the sixth transistor M6 are connected to one terminals of the twelfth inductor L12, the eleventh inductor L11, the twenty-second capacitor C22, and the twenty-third capacitor C23, the other terminal of the twelfth inductor L12 is connected to one terminal of the twenty-first capacitor C21 and the drain voltage Vd, the other terminal of the twenty-first capacitor C21 is grounded, the other terminal of the eleventh inductor L11 is connected to one terminal of the twentieth capacitor C20 and the drain voltage Vd, the other terminal of the twentieth capacitor C20 is grounded, the other terminal of the twenty-second capacitor C22 is grounded, and the other terminal of the twenty-third capacitor C23 is connected to the output port RFout.
In fig. 1, the output terminals of the third to sixth transistors M3 to M6 are the output terminals of the third transistor, one end of the twelfth inductor L12, the eleventh inductor L11, the twenty-second capacitor C22, and the twenty-third capacitor C23 are one end of the output matching circuit, and the other end of the twenty-third capacitor C23 is the other end of the output matching circuit. In addition, the third terminals of the first to sixth transistors M1 to M6 except the input terminal and the output terminal are grounded.
According to the power amplifier circuit provided by the embodiment of the invention, the loss of a matching link is reduced by passing the input power through the input matching circuit, the first-stage and second-stage interstage matching circuits and the second-stage and third-stage interstage matching circuits, the power is amplified by the first-stage transistor, the second-stage transistor and the third-stage transistor, and the optimal efficiency matching of the output matching circuit is realized.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (5)
1. A power amplifier circuit, comprising: the input port, the input matching circuit, the first stage transistor, the first stage and second stage interstage matching circuit, the second stage transistor, the second stage and third stage interstage matching circuit, the third stage transistor, the output matching circuit and the output port;
the input port is connected with one end of the input matching circuit;
the other end of the input matching circuit is connected with the input end of the first-stage transistor;
the output end of the first-stage transistor is connected with one end of the first-stage and second-stage interstage matching circuit;
the other end of the first-stage and second-stage interstage matching circuit is connected with the input end of the second-stage transistor;
the output end of the second-stage transistor is connected with one end of the second-stage and third-stage interstage matching circuit;
the other ends of the second-stage and third-stage interstage matching circuits are connected with the input end of the third-stage transistor;
the output end of the third-stage transistor is connected with one end of the output matching circuit;
the other end of the output matching circuit is connected with the output port.
2. The power amplifier circuit of claim 1, wherein the first stage transistor comprises a first transistor, and the input matching circuit comprises first to fourth capacitances, a first inductance, a second inductance, and first to third resistances;
the input port is connected with one end of a first resistor, the other end of the first resistor is connected with one end of a first capacitor, the other end of the first capacitor is connected with one end of a first inductor and one end of a second capacitor, the other end of the first capacitor is grounded, the other end of the second capacitor is connected with one end of a second resistor, a third capacitor and a third resistor, the other end of the third capacitor and the other end of the second resistor are connected with the input end of a first transistor, the other end of the third resistor is connected with one end of a second inductor, the other end of the second inductor is connected with one end of a fourth capacitor and grid voltage, and the other end of the fourth capacitor is grounded.
3. The power amplifier circuit of claim 2, wherein the second stage transistor comprises a second transistor, and the first stage and second stage inter-stage matching circuit comprises a fifth capacitor to eighth capacitor, a fourth resistor, a fifth resistor, a third inductor, and a fourth inductor;
the output end of the first transistor is connected with one end of a fifth capacitor and one end of a third inductor, the other end of the third inductor is connected with one end of a sixth capacitor and drain voltage, the other end of the sixth capacitor is grounded, the other end of the fifth capacitor is connected with one end of a seventh capacitor and one end of a fourth resistor, the other ends of the seventh capacitor and the fourth resistor are connected with one end of the fifth resistor and the input end of the second transistor, the other end of the fifth resistor is connected with one end of the fourth inductor, the other end of the fourth inductor is connected with one end of an eighth capacitor and gate voltage, and the other end of the eighth capacitor is grounded.
4. A power amplifier circuit according to claim 3, wherein the third-stage transistor includes third to sixth transistors, and the second-stage and third-stage inter-stage matching circuit includes ninth to nineteenth capacitances, sixth to ninth resistances, and fifth to tenth inductances;
the output end of the second transistor is connected with one end of a fifth inductor, a sixth inductor, an eleventh capacitor, a twelfth capacitor and a thirteenth capacitor, the other end of the fifth inductor is connected with one end of a ninth capacitor and drain voltage, the other end of the ninth capacitor is grounded, the other end of the sixth inductor is connected with one end of the tenth capacitor and drain voltage, the other end of the tenth capacitor is grounded, the other end of the thirteenth capacitor is grounded, the other end of the eleventh capacitor is connected with the input end of the fourteenth capacitor, the sixth resistor, one end of the seventh resistor, the third transistor and the fourth transistor, the other end of the fourteenth capacitor is grounded, the other end of the sixth resistor is connected with one end of the seventh inductor, the other end of the seventh inductor is connected with one end of the sixteenth capacitor and gate voltage, the other end of the sixteenth capacitor is grounded, the other end of the seventh resistor is connected with one end of the eighth inductor, the other end of the eighth inductor is connected with one end of the seventeenth capacitor and eighteenth capacitor, the other end of the seventeenth capacitor is grounded, the other end of the seventeenth capacitor and the eighteenth capacitor is grounded, the other end of the twelfth capacitor is connected with the fifteenth capacitor, the other end of the nineteenth capacitor and the nineteenth capacitor is connected with the nineteenth capacitor and the other end of the nineteenth capacitor is grounded.
5. The power amplifier circuit of claim 4, wherein the output matching circuit comprises a twentieth capacitor to a twenty-third capacitor, an eleventh inductor, a twelfth inductor;
the output ends of the third transistor, the fourth transistor, the fifth transistor and the sixth transistor are connected with one ends of a twelfth inductor, an eleventh inductor, a twenty-second capacitor and a twenty-third capacitor, the other end of the twelfth inductor is connected with one end of a twenty-first capacitor and drain voltage, the other end of the twenty-first capacitor is grounded, the other end of the eleventh inductor is connected with one end of the twentieth capacitor and drain voltage, the other end of the twentieth capacitor is grounded, the other end of the twenty-second capacitor is grounded, and the other end of the twenty-third capacitor is connected with an output port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311331977.7A CN117353672B (en) | 2023-10-16 | 2023-10-16 | Power amplifier circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311331977.7A CN117353672B (en) | 2023-10-16 | 2023-10-16 | Power amplifier circuit |
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| CN117353672A true CN117353672A (en) | 2024-01-05 |
| CN117353672B CN117353672B (en) | 2024-04-02 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN117353672B (en) | 2024-04-02 |
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