CN116248059A - Multi-band reconfigurable power amplifier and control method thereof - Google Patents

Multi-band reconfigurable power amplifier and control method thereof Download PDF

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Publication number
CN116248059A
CN116248059A CN202211660891.4A CN202211660891A CN116248059A CN 116248059 A CN116248059 A CN 116248059A CN 202211660891 A CN202211660891 A CN 202211660891A CN 116248059 A CN116248059 A CN 116248059A
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China
Prior art keywords
microstrip line
circuit
power amplifier
matching circuit
reconfigurable
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CN202211660891.4A
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Chinese (zh)
Inventor
南敬昌
王绮梦
高明明
邱思潼
程龙
刘文进
董浩杰
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Liaoning Technical University
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Liaoning Technical University
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Priority to CN202211660891.4A priority Critical patent/CN116248059A/en
Publication of CN116248059A publication Critical patent/CN116248059A/en
Withdrawn legal-status Critical Current

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    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/66—Amplifiers simultaneously generating oscillations of one frequency and amplifying signals of another frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microwave Amplifiers (AREA)
  • Amplifiers (AREA)

Abstract

The invention discloses a multiband reconfigurable power amplifier and a control method thereof, which relate to the technical field of communication technology, and aim to solve the problem of improving the frequency spectrum utilization rate; the circuit also comprises a reconfigurable switch structure inside the output matching circuit. The invention designs the reconfigurable switch by adopting the varactor, thereby reducing the difficulty of actually designing the matching circuit; the proposed reconfigurable structure realizes the matching of different frequency bands under the same main road, and improves the feasibility of the whole power amplifier; and the matching of different frequency points is obtained by controlling the size of the accessed varactor diode, and finally the output of the multi-frequency signal is realized. The design provides a new design idea for the reconfigurable power amplifier.

Description

Multi-band reconfigurable power amplifier and control method thereof
Technical Field
The invention relates to the technical field of communication technology, in particular to a multiband reconfigurable power amplifier and a control method thereof.
Background
With the development of wireless communication systems, the frequency bands of the communication systems are continuously divided, and the frequency spectrum resources are becoming less and less as the basic resources of wireless communication, so that the development of the wireless communication systems is limited by the waste of the frequency spectrum resources. The power amplifier is used as an important component of a communication system, and in order to improve the spectrum utilization rate, the power amplifier is enabled to work in a multi-standard and multi-mode state to better meet the working requirements of future mobile communication.
The reconfigurable device is added, so that the matching structure of the power amplifier is more flexible, and the power amplifier can adapt to various communication system standards. The traditional power amplifier based on the switch mode and the harmonic tuning mode can keep high-efficiency operation only in a saturated state, and the efficiency is in a descending trend in a power back-off interval. In addition, the design cost is increased by the proposals of the abnormal technology, the envelope tracking technology and the envelope elimination and restoration technology, so that the reconfigurable device with low cost and high flexibility can be more suitable for the development of a communication system.
Disclosure of Invention
In order to solve the above problems, that is, the problems set forth in the background art, the present invention provides a multi-band reconfigurable power amplifier, which comprises an input port, an input matching circuit, a stabilizing network, a gate bias circuit, a transistor, a drain bias circuit, an output matching circuit and an output port, wherein the input port, the input matching circuit, the stabilizing network, the gate bias circuit, the transistor, the drain bias circuit, the output matching circuit and the output port are sequentially connected in series, the gate bias circuit is internally connected with the input port of the gate bias circuit, and the drain bias circuit is internally connected with the input port of the drain bias circuit;
the output matching circuit comprises an output matching circuit main microstrip line and a plurality of reconfigurable switch structures, wherein the output matching circuit main microstrip line consists of a main microstrip line and a series capacitor, the reconfigurable switch structures are connected with the main microstrip line, the drain bias circuit is respectively connected with the output matching circuit main microstrip line and the transistor, and the reconfigurable switch consists of a diode circuit.
The invention is further provided with: the input matching circuit comprises a main microstrip line and a series capacitor.
The invention is further provided with: the input matching circuit comprises an input port P1, an output port P2, a capacitor C1, a microstrip line TL2, a microstrip line TL3, a microstrip line TL4 and a microstrip line TL5, wherein the input port P1 is connected with one end of the microstrip line TL1, the other end of the microstrip line TL1 is connected with the input end of the capacitor C1, the output end of the capacitor C1 is connected with one end of the microstrip line TL2, the other end of the microstrip line TL2 is connected with one end of the microstrip line TL3, one end of the microstrip line TL3 far away from the microstrip line TL2 is connected with one end of the microstrip line TL4, one end of the microstrip line TL4 far away from the microstrip line TL3 is connected with one end of the microstrip line TL5, and the other end of the microstrip line TL5 is connected with the output port P2.
The invention is further provided with: the diode circuit is formed by connecting a varactor diode, a capacitor, an inductor, a microstrip line and a reconfigurable switch input port, wherein the varactor diode comprises inductors L1 and L2, capacitors C2 and C3, a resistor R1 and a diode, the capacitor C2 is respectively connected with the inductor L1 in parallel and connected with the inductor L2 in series, the capacitor C3 is connected with the resistor R1 and the diode in parallel, and the inductor L2 is connected with the C3, the R1 and the diode after being connected in parallel in series.
The invention is further provided with: the stabilizing network is composed of RC resonant circuits.
The invention is further provided with: the method comprises the following steps:
s1: accessing a target signal into the input port and transmitting the target signal into a broadband input matching circuit;
s2: transmitting the target signal into a stable network;
s3: amplifying the power of the signal through a transistor and a bias circuit;
s4: the amplified signal passes through an output matching circuit by controlling a reconfigurable switch;
s5: the signal is transmitted to the signal receiving device through the output port.
The beneficial technical effects of the invention are as follows: by switching the reconfigurable switch into the output matching circuit, the signals are switched between three different frequency bands, the compatibility problem between systems is solved, and the utilization of spectrum resources is more reasonable. The input matching network adopts a broadband matching structure, and the serial structure of a plurality of microstrip lines can effectively reduce the quality factor of input matching, thereby realizing the effect of broadband matching and simultaneously reducing the loss of radio frequency signals in input matching. Under the condition that serial branches are unchanged, the reconfigurable matching network changes the capacitance of the switch access circuit to realize matching of a plurality of frequency bands, reduces the difficulty of designing a plurality of matching branches, and has higher flexibility. The switching of the power amplifier at different working frequencies is realized through the access of the reconfigurable switch, the power amplifier can be applied to a plurality of mobile communication systems, the power amplifier is easy to realize and achieves the purposes of high efficiency and high flexibility through the content, and meanwhile, the power amplifier is more beneficial to the miniaturization and integration of the communication system and has better practical value.
Drawings
Fig. 1 is a schematic diagram of a multi-band reconfigurable power amplifier;
FIG. 2 is a schematic diagram of an input matching circuit;
FIG. 3 is a schematic diagram of the internal circuit of a varactor of a reconfigurable switch;
fig. 4 is a power amplifier flow diagram.
Reference numeral 1-input port, 2-input matching circuit, 3-stabilizing network, 4-gate bias circuit, 5-gate bias circuit input port, 6-transistor, 7-drain bias circuit, 8-drain bias circuit input port, 9-output matching circuit, 10-output matching circuit main microstrip line, 11-reconfigurable switch, 12-reconfigurable switch input port, 13-varactor, 14-output port.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
The invention provides a multiband reconfigurable power amplifier and a control method thereof, as shown in fig. 1, the multiband reconfigurable power amplifier comprises an input port 1, an input matching circuit 2, a stabilizing network 3, a grid bias circuit 4, a transistor 6, a drain bias circuit 7, an output matching circuit 9 and an output port 14.
The transistor model in this example employs a power amplifier tube CGH40010F.
The input matching circuit 2, the stabilizing network 3, the grid bias circuit 4, the transistor 6, the drain bias circuit 7 and the output matching circuit 9 are sequentially connected in series.
The input matching circuit is shown in fig. 2, and comprises an input port P1, an output port P2, a capacitor C1, microstrip lines TL1, TL2, TL3, TL4 and TL5, wherein the input port P1 is used for receiving a target signal, one end of the microstrip line TL1 is connected, the other end of the microstrip line TL1 is connected with the input end of the capacitor C1, the output end of the capacitor C1 is connected with one end of the microstrip line TL2, the other end of the microstrip line TL2 is connected with one end of the microstrip line TL3, the other end of the microstrip line TL3 is connected with one end of the microstrip line TL4, the other end of the microstrip line TL4 is connected with one end of the microstrip line TL5, and the microstrip line TL5 is connected with the output port P2; the circuit has a simple structure, expands the bandwidth of the input circuit, and simultaneously the main microstrip line is easy to adjust, so that the whole input circuit can realize good matching within the bandwidth range from 2.2GHz to 3.8 GHz.
The stabilizing network is formed by connecting a resistor and a capacitor in parallel.
The transistor 6, the gate bias circuit 4 and the drain bias circuit 7 are used for amplifying the power of the signal, wherein the gate of the power amplifier tube CGH40010F is connected with the gate bias circuit, the drain of the power amplifier tube CGH40010F is connected with the drain bias circuit, and the source of the power amplifier tube CGH40010F is connected with the ground.
The reconfigurable switching circuit 11 comprises a microstrip line, a varactor switch, a capacitor, an inductor and a switching power supply, wherein the microstrip line, the inductor and the switching power supply are connected in series, three ports of the varactor switch are respectively connected with the microstrip line, the capacitor and the ground, and the other end of the capacitor is connected with a matching circuit trunk. Inside the varactor switch, as shown in fig. 3, the varactor switch includes ports P1, P2, P3, an inductor L1, a capacitor C2, and an MTV4090, where the port P1 is connected with one end of the capacitor C2, the port P3 is connected with one end of the inductor L1, the other end of the capacitor C2 is connected in parallel with the other end of the inductor L1, one end of the MTV4090 with the inductor is connected in series with the capacitor C2, and the other end of the MTV4090 is connected with the port P2.
The output matching circuit 9 adopts a reconfigurable switch structure and a series microstrip line structure to combine, so that the circuit structure can be simplified, and the output matching circuit comprises six microstrip lines, one capacitor and three reconfigurable switches, wherein the microstrip lines and the capacitors are connected in series to form a main circuit, and the main circuit and the three reconfigurable switches are connected in parallel to form the output matching circuit. The output matching circuit is connected with the circuit through the reconfigurable switch under each frequency band, and the capacitance value of the circuit is different, so that the matching of a plurality of frequency bands is realized.
A method of controlling a multi-band reconfigurable power amplifier is shown in fig. 4, comprising the steps of:
step 1: accessing a target signal into the input port and transmitting the target signal into a broadband input matching circuit;
step 2: transmitting the target signal into a stable network;
step 3: amplifying the power of the signal through a transistor and a bias circuit;
step 4: the amplified signal passes through an output matching circuit by controlling a reconfigurable switch;
step 5: the signal is transmitted into the signal receiving device through the output port;
and (5) according to the steps 1 to 5, finishing the functions of amplifying the signals and switching the frequency bands of the amplified signals.
The switching of three frequency bands is realized by adding a reconfigurable switch in the output matching circuit, so that the current main frequency band can be operated, and the compatibility problem between mobile communication systems is solved. The input matching circuit adopts a broadband matching structure, can realize the bandwidth range from 2.2GHz to 3.8GHz, integrally meets the functional requirement, and meanwhile, the circuit main microstrip lines are connected in series, so that the structure is compact, the parameter calculation is simpler, the design matching difficulty is reduced, and the feasibility of the whole power amplifier is improved. The design provides a design thought for a modern multimode multi-frequency power amplifier, so that the power amplifier is easier to realize and achieves the purpose of high efficiency, and meanwhile, the design is beneficial to miniaturization and integration of a communication system, and can be widely applied to the development of multi-band mobile communication.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
In the description of the present invention, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate a direction or a positional relationship, are based on the direction or the positional relationship shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.

Claims (6)

1. A multi-band reconfigurable power amplifier, characterized by: the circuit comprises an input port (1), an input matching circuit (2), a stabilizing network (3), a grid bias circuit (4), a transistor (6), a drain bias circuit (7), an output matching circuit (9) and an output port (14), wherein the input port (1), the input matching circuit (2), the stabilizing network (3), the grid bias circuit (4), the transistor (6), the drain bias circuit (7), the output matching circuit (9) and the output port (14) are sequentially connected in series, the grid bias circuit (4) is internally connected with the grid bias circuit input port (5), and the drain bias circuit (7) is internally connected with the drain bias circuit input port (8);
the output matching circuit (9) comprises an output matching circuit main microstrip line (10) and a plurality of reconfigurable switch structures (11), the output matching circuit main microstrip line (10) is composed of a main microstrip line and a series capacitor, the reconfigurable switch structures (11) are connected with the main microstrip line, the drain bias circuit (7) is respectively connected with the output matching circuit main microstrip line (10) and the transistor (6), and the reconfigurable switch (11) is composed of a diode circuit.
2. A multi-band reconfigurable power amplifier according to claim 1, characterized in that: the input matching circuit (2) comprises a main microstrip line and a series capacitor.
3. A multi-band reconfigurable power amplifier according to claim 1, characterized in that: the input matching circuit (2) further comprises an input port P1, an output port P2, a capacitor C1, a microstrip line TL2, a microstrip line TL3, a microstrip line TL4 and a microstrip line TL5, wherein the input port P1 is connected with one end of the microstrip line TL1, the other end of the microstrip line TL1 is connected with the input end of the capacitor C1, the output end of the capacitor C1 is connected with one end of the microstrip line TL2, the other end of the microstrip line TL2 is connected with one end of the microstrip line TL3, one end of the microstrip line TL3 far away from the microstrip line TL2 is connected with one end of the microstrip line TL4, one end of the microstrip line TL4 far away from the microstrip line TL3 is connected with one end of the microstrip line TL5, and the other end of the microstrip line TL5 is connected with the output port P2.
4. A multi-band reconfigurable power amplifier according to claim 1, characterized in that: the diode circuit is formed by connecting a varactor diode (13), a capacitor, an inductor, a microstrip line and a reconfigurable switch input port (12), wherein the varactor diode (13) comprises inductors L1 and L2, capacitors C2 and C3, a resistor R1 and a diode, the capacitor C2 is respectively connected with the inductor L1 in parallel and connected with the inductor L2 in series, the capacitor C3 is connected with the resistor R1 and the diode in parallel, and the inductor L2 is connected with the C3, the resistor R1 and the diode in series after being connected in parallel.
5. A multi-band reconfigurable power amplifier according to claim 1, characterized in that: the stabilizing network (3) consists of an RC resonant circuit.
6. A method of controlling a multi-band reconfigurable power amplifier according to claim 1, characterized in that: the method comprises the following steps:
s1: accessing a target signal into the input port and transmitting the target signal into a broadband input matching circuit;
s2: transmitting the target signal into a stable network;
s3: amplifying the power of the signal through a transistor and a bias circuit;
s4: the amplified signal passes through an output matching circuit by controlling a reconfigurable switch;
s5: the signal is transmitted to the signal receiving device through the output port.
CN202211660891.4A 2022-12-23 2022-12-23 Multi-band reconfigurable power amplifier and control method thereof Withdrawn CN116248059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211660891.4A CN116248059A (en) 2022-12-23 2022-12-23 Multi-band reconfigurable power amplifier and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211660891.4A CN116248059A (en) 2022-12-23 2022-12-23 Multi-band reconfigurable power amplifier and control method thereof

Publications (1)

Publication Number Publication Date
CN116248059A true CN116248059A (en) 2023-06-09

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