Power amplification circuit, power amplification method and system, computer equipment and medium
By using a notch filter design in the power amplifier circuit and utilizing a resonant circuit with a capacitor connected in parallel between the primary and secondary coils, the problem of increased chip area caused by adding filters in the prior art is solved, and the third-order harmonics are effectively suppressed and the circuit area is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-14
- Publication Date
- 2026-04-10
AI Technical Summary
In the prior art, in order to suppress the third harmonic output impedance, power amplifiers must add filter modules at the output end and antenna, which leads to an increase in chip area.
A notch filter is formed by using a primary coil and a secondary coil, and a capacitor is connected in parallel to the secondary coil. The third harmonic component is suppressed through a resonant circuit, avoiding the need to add filter modules at the circuit output and antenna.
This method effectively suppresses third-order harmonics without adding a filter module, reducing the circuit area and chip footprint.
Smart Images
Figure CN121841301A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of amplification circuit, especially to a power amplification circuit, a power amplification method, a system, a computer device and a medium. BACKGROUND
[0002] A power amplifier is a circuit used to enhance the power of an input signal. In communication systems and radio frequency transmissions, power amplifiers are widely used to boost low-power signals to a sufficiently high power to drive an antenna to transmit signals. The key goal of a power amplifier is to provide high efficiency and high output power while maintaining signal quality and linearity;
[0003] In integrated circuit design, in order to achieve higher power amplification and better system performance, researchers are constantly exploring new topologies and optimization methods. In existing integrated circuit design, the E / F2 power amplifier topology is selected to improve output power and efficiency, and existing technologies tend to use transformer resonant circuits and LC filters to solve the problem of harmonic suppression and signal transmission efficiency. These technologies can achieve better performance in circuit design and meet specific application requirements. However, in order to achieve third-order harmonic output impedance suppression, the power amplifier in the traditional chip must add a filter module at the output end and the antenna. However, this design method will occupy a large chip area, so how to design a power amplification circuit with less chip area while meeting the third-order harmonic has become a pressing problem.
[0004] SUMMARY
[0005] Therefore, it is necessary to propose a power amplification circuit with less chip area while meeting the third-order harmonic, a power amplification method, a system, a computer device and a medium to solve the above problems.
[0006] The present application provides a power amplification circuit, which comprises an output unit, a wave trap and an input unit.
[0007] The power supply end of the input unit is connected with the external power supply, the output end of the input unit is connected with the input end of the wave trap, the ground end of the output unit is grounded, the output end of the wave trap is connected with the output unit, and the ground end of the wave trap is grounded.
[0008] The wave trap is provided with a primary coil and a secondary coil.
[0009] The primary coil and the secondary coil together form a wave trap, the input end of the primary coil and the input end of the primary coil are connected with the input unit, the primary coil is also connected with external power supply, the input end of the secondary coil is grounded, the output end of the secondary coil is connected with the output unit, and the secondary coil is connected in series with the first capacitor, so as to realize the effect of suppressing the resonant impedance of the wave trap output signal.
[0010] Further, the secondary coil is provided with a section of intercepting inductor, the input end of the intercepting inductor is connected with one end of the first capacitor, and the output end of the intercepting inductor is connected with the other end of the first capacitor.
[0011] Further, the output unit includes a second capacitor;
[0012] One end of the second capacitor is connected with the output end of the secondary coil and serves as the output end of the output unit, and the other end of the second capacitor is grounded.
[0013] Further, the input unit includes a third capacitor, a fourth capacitor, a first transistor and a second transistor;
[0014] One end of the third capacitor is grounded, the other end of the third capacitor is connected with the input end of the primary coil and the collector of the first transistor respectively, the base of the first transistor is connected with the negative electrode of the external power supply, one end of the fourth capacitor is grounded, the other end of the fourth capacitor is connected with the output end of the primary coil and the collector of the second transistor respectively, the base of the second transistor is connected with the positive electrode of the external power supply, the emitter of the second transistor and the emitter of the first transistor are connected with each other and grounded.
[0015] Further, the input unit further includes a switch unit;
[0016] One end of the switch unit is connected with the emitter of the second transistor and the emitter of the first transistor, and the other end of the switch unit is grounded.
[0017] The application also provides a power amplification method, which is applied to the power amplification circuit, the circuit includes a primary coil and a secondary coil, the primary coil is also connected with external power supply, the secondary coil is connected in series with the first capacitor, and the primary coil and the secondary coil are connected with a background system, and the method includes the following steps:
[0018] The secondary coil is intercepted through the first capacitor, so as to generate an intercepting inductor connected with the first capacitor;
[0019] Adjusting the signal input of the primary coil and the secondary coil, so that the output signal of the intercept inductance coil resonates in a set frequency band;
[0020] Obtaining the output signal output by the intercept inductance coil after resonance, so as to realize the corresponding output power amplification effect;
[0021] Further, the output signal is specifically represented as follows: Pout is the output power output by the intercept inductance coil, Lout is the inductance value output by the intercept inductance coil, and C1 is the capacitance value of the first capacitor.
[0022] The application further provides a power amplification system, comprising:
[0023] An intercepting unit is configured to intercept the secondary coil through the first capacitor, so as to generate an intercept inductance coil connected with the first capacitor;
[0024] An adjusting unit is configured to adjust the signal input of the primary coil and the secondary coil, so that the output signal of the intercept inductance coil resonates in a set frequency band;
[0025] An output unit is configured to obtain the output signal output by the intercept inductance coil after resonance, so as to realize the corresponding output power amplification effect.
[0026] A computer device comprises a memory and a processor, the memory stores a computer program, and the computer program is executed by the processor to make the processor execute the following steps:
[0027] The secondary coil is intercepted through the first capacitor, so as to generate an intercept inductance coil connected with the first capacitor;
[0028] The signal input of the primary coil and the secondary coil is adjusted, so that the output signal of the intercept inductance coil resonates in a set frequency band;
[0029] The output signal output by the intercept inductance coil after resonance is obtained, so as to realize the corresponding output power amplification effect.
[0030] A computer readable medium stores a computer program, and the computer program is executed by a processor to make the processor execute the following steps:
[0031] The secondary coil is intercepted through the first capacitor, so as to generate an intercept inductance coil connected with the first capacitor;
[0032] Adjust the signal inputs of the primary coil and the secondary coil so that the output signal of the intercepting inductor resonates in a set frequency band;
[0033] The output signal output by the intercepted inductor after resonance is obtained, thereby achieving the corresponding output power amplification effect.
[0034] This application, through the aforementioned structure, achieves third-order harmonic component suppression by setting a notch filter composed of a primary coil and a secondary coil, and connecting a capacitor in parallel with the secondary coil of the notch filter. This eliminates the need to add filter modules at the output and antenna of the circuit, thus reducing the circuit area. It solves the problem in the prior art where power amplifiers must add filter modules at the output and antenna to suppress third-order harmonic output impedance, resulting in an increased chip area, thereby reducing the area of the amplifier chip. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] in:
[0037] Figure 1 This is a circuit diagram of a power amplifier circuit in one embodiment;
[0038] Figure 2 This is a flowchart of a power amplification method in one embodiment;
[0039] Figure 3 This is a system architecture diagram of a power system in one embodiment;
[0040] Figure 4 This is a structural block diagram of a computer device in one embodiment.
[0041] The labels in the diagram are as follows: 1 - Output unit, 2 - Notch filter, 3 - Input unit, 4 - Cut-off inductor, 10 - Cut-off unit, 20 - Adjustment unit, 30 - Output unit. Detailed Implementation
[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0043] refer to Figure 1 This application provides a power amplifier circuit, including an output unit 1, a notch filter 2, and an input unit 3;
[0044] The power supply terminal of input unit 3 is connected to an external power supply, the output terminal of input unit 3 is connected to the input terminal of notch filter 2, the ground terminal of output unit 1 is grounded, the output terminal of notch filter 2 is connected to output unit 1, and the ground terminal of notch filter 2 is grounded.
[0045] refer to Figure 1 The notch filter 2 contains a primary coil Lb1 and a secondary coil Lb2.
[0046] The primary coil Lb1 and the secondary coil Lb2 together form a notch filter. The input terminals of the primary coil Lb1 and the secondary coil Lb2 are both connected to the input unit 3. The primary coil Lb1 is also connected to an external power supply. The input terminal of the secondary coil Lb2 is grounded, and the output terminal of the secondary coil Lb2 is connected to the output unit 1. A first capacitor C1 is connected in series with the secondary coil Lb2, thereby achieving the effect of suppressing the resonant impedance of the notch filter output signal.
[0047] As described in the above embodiments, in order to achieve the corresponding resonant impedance suppression effect, this application provides three units: output unit 1, notch filter 2, and input unit 3. The notch filter 2 is composed of a primary coil Lb1 and a secondary coil Lb2. It can be understood that the secondary coil Lb2 is used to form an inductor, and the primary coil Lb1 is used to adjust and control the frequency response of the notch filter 2. The combination of the primary coil Lb1 and the secondary coil Lb2 can be adjusted according to specific design and application requirements to achieve filtering and suppression of specific frequencies. Similarly, a first capacitor C1 is connected in series with the secondary coil Lb2. It can be understood that the first capacitor C1 and the secondary coil Lb2 are used to form a resonant circuit. The interaction between the secondary coil Lb2 and the first capacitor C1 causes an increase in impedance at a specific frequency, which causes the signal at that frequency to be attenuated or suppressed in the notch filter 2, thereby suppressing the resonant impedance of the output signal of the notch filter 2.
[0048] As can be seen from the above embodiments, the greatest beneficial effect of this application is that: by setting a notch filter composed of a primary coil and a secondary coil, and connecting a capacitor in parallel with the secondary coil of the notch filter to suppress the third-order harmonic components, the third-order harmonic components can be suppressed without adding filter modules at the output end and antenna of the circuit. This achieves the function of reducing the circuit area and solves the problem in the prior art that in order to suppress the third-order harmonic output impedance, the power amplifier must add filter modules at the output end and antenna, which leads to an increase in chip area, thus reducing the area of the amplifier chip.
[0049] refer to Figure 1 In one embodiment, the secondary coil Lb2 is provided with a segmented inductor 4. The input terminal of the segmented inductor 4 is connected to one end of the first capacitor C1, and the output terminal of the segmented inductor 4 is connected to the other end of the first capacitor C1.
[0050] As described in the above embodiment, since the cut-off inductor 4 is cut from the secondary coil Lb2, the first capacitor C1 and the cut-off inductor 4 are used to form a resonant circuit. The inner diameter of the cut-off inductor 4 is 100 μm, and the outer diameter of the cut-off inductor 4 is 180 μm. The interaction between the cut-off inductor 4 and the first capacitor C1 causes an increase in impedance at a specific frequency. This causes the signal at that frequency to be attenuated or suppressed in the notch filter 2, thereby suppressing the resonant impedance of the output signal of the notch filter 2.
[0051] refer to Figure 1 In one embodiment, the output unit 1 includes a second capacitor C2;
[0052] One end of the second capacitor C2 is connected to the output terminal of the secondary coil Lb2 and serves as the output terminal of the output unit 1, while the other end of the second capacitor C2 is grounded.
[0053] As described in the above embodiment, one end of the second capacitor C2 is connected to the output end of the secondary coil Lb2 and serves as the output end of the output unit 1, while the other end of the second capacitor C2 is grounded, thereby achieving the effect of outputting the output signal from the secondary coil Lb2.
[0054] refer to Figure 1 In one embodiment, the input unit 3 includes a third capacitor C3, a fourth capacitor C4, a first transistor D1, and a second transistor D2;
[0055] One end of the third capacitor C3 is grounded, and the other end of the third capacitor C3 is connected to the input terminal of the first-stage coil Lb1 and the collector of the first transistor D1. The base of the first transistor D1 is connected to the negative terminal of the external power supply. One end of the fourth capacitor C4 is grounded, and the other end of the fourth capacitor C4 is connected to the output terminal of the first-stage coil Lb1 and the collector of the second transistor D2. The base of the second transistor D2 is connected to the positive terminal of the external power supply. The emitter of the second transistor D2 and the emitter of the first transistor D3 are connected to each other and grounded.
[0056] As described in the above embodiments, the first transistor D1 and the second transistor D2 are set in the input unit 3 to control the operating state of the primary coil Lb1, thereby achieving the effect of adjusting the frequency response of the notch filter 2.
[0057] refer to Figure 1 In one embodiment, the input unit 3 further includes a switch unit SW1;
[0058] One end of the switching unit SW1 is connected to the emitter of the second transistor D2 and the emitter of the first transistor D1, and the other end of the switching unit SW1 is grounded.
[0059] As described in the above embodiments, the switching unit SW1 controls the first transistor D1 and the second transistor D2 to turn on and off respectively, thereby achieving the effect of controlling the notch filter 2 to turn on or off.
[0060] refer to Figure 2 This application also provides a power amplification method applied to a power amplification circuit. The circuit includes a primary coil Lb1 and a secondary coil Lb2. The primary coil Lb1 is connected to an external power supply, and a first capacitor C1 is connected in series with the secondary coil Lb2. Both the primary coil Lb1 and the secondary coil Lb2 are connected to a backend system. The method includes:
[0061] S1. The secondary coil is cut off through the first capacitor to generate a cut-off inductor coil connected to the first capacitor.
[0062] As described in step S1 above, the part of the secondary coil Lb2 connected in series with the first capacitor C1 in the background system is the cut-off inductor 4. As can be seen from the above embodiment, the first capacitor C1 and the secondary coil Lb2 are used to form a resonant circuit. The interaction between the cut-off inductor 4 and the first capacitor C1 causes the impedance at a specific frequency to increase. This causes the signal at that frequency to be attenuated or suppressed in the notch filter 2, thereby suppressing the resonant impedance of the output signal of the notch filter 2.
[0063] S2. Adjust the signal input of the secondary coil so that the output signal of the intercepted inductor coil resonates in the set frequency band;
[0064] As described in step S2 above, the background system adjusts the signal input of the secondary coil through the first transistor D1 and the second transistor D2, so that the output signal of the intercepted inductor 4 resonates in the set frequency band, thereby achieving the corresponding third harmonic component suppression effect.
[0065] S3. Obtain the output signal of the inductor coil after resonance, thereby achieving the corresponding output power amplification effect.
[0066] As described in step S3 above, the background system acquires the output signal of the inductor coil 4 after resonance. At this time, the output signal is the output signal after the third harmonic component is suppressed by the notch filter 2, thereby achieving the effect of output power amplification.
[0067] In one embodiment, the output signal specifically refers to the output power output by the intercepted inductor coil, the inductance value output by the intercepted inductor coil, and the capacitance value of the first capacitor.
[0068] As described in the above embodiment, the background system adjusts the signal input of the secondary coil through the first transistor D1 and the second transistor D2, so that the output signal of the intercepted inductor 4 resonates in the set frequency band, thereby achieving the corresponding third harmonic component suppression effect. In this embodiment, the set frequency band is the 3X2.4GHZ ISM band, and the output signal specifically represents the output power output by the intercepted inductor, the inductance value output by the intercepted inductor, and the capacitance value of the first capacitor. The final output signal is amplified and suppressed by the notch filter 2.
[0069] refer to Figure 3 This application also provides a power amplification system, including:
[0070] The cutting unit 10 is used to cut the secondary coil through the first capacitor, thereby generating a cutting inductor coil connected to the first capacitor.
[0071] Adjustment unit 20 is used to adjust the signal input of the secondary coil, so that the output signal of the intercepted inductor coil resonates in a set frequency band;
[0072] The output unit 30 is used to acquire the output signal of the inductor coil after resonance, thereby achieving the corresponding output power amplification effect.
[0073] The modules mentioned above are for executing the power amplification system described above, and will not be described in detail here.
[0074] Figure 4An internal structural diagram of a computer device in one embodiment is shown. This computer device may specifically be a server, including but not limited to high-performance computers and high-performance computer clusters. Figure 4 As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and may also store a computer program. When executed by the processor, this computer program enables the processor to implement the power amplification method. The internal memory may also store a computer program, which, when executed by the processor, enables the processor to execute the power amplification system.
[0075] In one embodiment, the power amplification method provided by the present invention can be implemented as a computer program, and the computer program can be implemented as follows: Figure 4 The computer device shown runs on this system. The computer device's memory can store the various program templates that make up the power amplifier system. For example: 10 - cutoff unit, 20 - adjustment unit, 30 - output unit.
[0076] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, performs the following steps:
[0077] The secondary coil is cut off by the first capacitor to generate a cut-off inductor connected to the first capacitor. The signal inputs of the primary coil and the secondary coil are adjusted so that the output signal of the cut-off inductor resonates in a set frequency band. The output signal of the cut-off inductor after resonance is obtained, thereby achieving the corresponding output power amplification effect.
[0078] As can be seen from the above embodiments, the greatest beneficial effect of this application is that by setting a notch filter composed of a primary coil and a secondary coil, and connecting a capacitor in parallel with the secondary coil of the notch filter to suppress the third-order harmonic components, the third-order harmonic components can be suppressed without adding filter modules at the output end and antenna of the circuit. This achieves the function of reducing the circuit area and solves the problem in the prior art that in order to suppress the third-order harmonic output impedance, the power amplifier must add filter modules at the output end and antenna, which leads to an increase in chip area, thus reducing the area of the amplifier chip.
[0079] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, the above embodiments are not described in detail.
[0080] All possible combinations of the various technical features in the examples are described; however, only if these technical features are...
[0081] There is no contradiction in the combinations, and all combinations should be considered to be within the scope of this specification.
[0082] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A power amplifier circuit, characterized in that, Includes output unit, notch filter and input unit; The power supply terminal of the input unit is connected to an external power supply, the output terminal of the input unit is connected to the input terminal of the notch filter, the ground terminal of the output unit is grounded, the output terminal of the notch filter is connected to the output unit, and the ground terminal of the notch filter is grounded. The notch filter includes a primary coil and a secondary coil. The primary coil and the secondary coil together form a notch filter. The input terminals of the primary coil and the secondary coil are both connected to the input unit. The primary coil is also connected to an external power supply. The input terminal of the secondary coil is grounded. The output terminal of the secondary coil is connected to the output unit. A first capacitor is connected in series with the secondary coil, thereby achieving the effect of suppressing the resonant impedance of the notch filter output signal.
2. The power amplifier circuit as described in claim 1, characterized in that, The secondary coil includes a section of cut-off inductor. The input terminal of the cut-off inductor is connected to one end of the first capacitor, and the output terminal of the cut-off inductor is connected to the other end of the first capacitor.
3. The power amplifier circuit as described in claim 1, characterized in that, The output unit includes a second capacitor; One end of the second capacitor is connected to the output terminal of the secondary coil and serves as the output terminal of the output unit, while the other end of the second capacitor is grounded.
4. The power amplifier circuit as described in claim 1, characterized in that, The input unit includes a third capacitor, a fourth capacitor, a first transistor, and a second transistor; One end of the third capacitor is grounded, and the other end of the third capacitor is connected to the input terminal of the first-stage coil and the collector of the first transistor. The base of the first transistor is connected to the negative terminal of the external power supply. One end of the fourth capacitor is grounded, and the other end of the fourth capacitor is connected to the output terminal of the first-stage coil and the collector of the second transistor. The base of the second transistor is connected to the positive terminal of the external power supply. The emitter of the second transistor and the emitter of the first transistor are connected to each other and grounded.
5. The power amplifier circuit as described in claim 4, characterized in that, The input unit also includes a switch unit; One end of the switching unit is connected to the emitter of the second transistor and the emitter of the first transistor, and the other end of the switching unit is grounded.
6. A power amplification method, characterized in that, The method is applied to the power amplifier circuit, which includes a primary coil and a secondary coil. The primary coil is also connected to an external power supply, and a first capacitor is connected in series with the secondary coil. Both the primary coil and the secondary coil are connected to a backend system. The method includes: The secondary coil is cut off by the first capacitor, thereby generating a cut-off inductor coil connected to the first capacitor. Adjust the signal inputs of the primary coil and the secondary coil so that the output signal of the intercepting inductor resonates in a set frequency band; The output signal output by the intercepted inductor after resonance is obtained, thereby achieving the corresponding output power amplification effect.
7. The power amplification method as described in claim 6, characterized in that, The output signal is specifically manifested as follows: ; Among them, the That is, the output power of the intercepted inductor coil. That is, the inductance value of the cut-off inductor coil output, the This is the capacitance value of the first capacitor.
8. A power amplification system, characterized in that, The system includes a primary coil and a secondary coil. The primary coil is also connected to an external power supply. A first capacitor is connected in series with the secondary coil. Both the primary coil and the secondary coil are connected to a backend system, which includes: The cutting unit is used to cut the secondary coil through the first capacitor, thereby generating a cutting inductor coil connected to the first capacitor. An adjustment unit is used to adjust the signal inputs of the primary coil and the secondary coil, so that the output signal of the intercepting inductor resonates in a set frequency band. The output unit is used to acquire the output signal output by the intercepted inductor coil after resonance, thereby achieving the corresponding output power amplification effect.
9. A computer device, characterized in that, The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements the power amplification method as described in any one of claims 6 to 7.
10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the power amplification method as described in any one of claims 6 to 7.