WO2022196920A1 - Amplificateur de puissance comprenant un filtre d'harmonique - Google Patents

Amplificateur de puissance comprenant un filtre d'harmonique Download PDF

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Publication number
WO2022196920A1
WO2022196920A1 PCT/KR2022/001053 KR2022001053W WO2022196920A1 WO 2022196920 A1 WO2022196920 A1 WO 2022196920A1 KR 2022001053 W KR2022001053 W KR 2022001053W WO 2022196920 A1 WO2022196920 A1 WO 2022196920A1
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WIPO (PCT)
Prior art keywords
filter circuit
power amplifier
harmonic
frequency
transistor
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PCT/KR2022/001053
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English (en)
Korean (ko)
Inventor
여성구
양영구
오한식
배순철
박재석
유영호
한정규
Original Assignee
삼성전자 주식회사
성균관대학교 산학협력단
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Publication of WO2022196920A1 publication Critical patent/WO2022196920A1/fr

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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
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • H03F1/565—Modifications of input or output impedances, not otherwise provided for using inductive elements
    • 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
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • 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
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/193—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/387—A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier

Definitions

  • Various embodiments of the present disclosure relate to a power amplifier including a harmonic filter.
  • This wireless charging technology uses wireless power transmission and reception, and is, for example, a system in which a battery can be automatically charged by simply placing it on a charging pad without connecting an electronic device through a separate charging connector.
  • These wireless charging technologies are largely classified into an electromagnetic induction method using a coil, a resonance method using resonance, and a radio frequency (RF)/micro wave radiation method that converts electrical energy into microwaves and transmits them.
  • RF radio frequency
  • the power transmission method by wireless charging is a method of transmitting power between the first coil of the transmitting end and the second coil of the receiving end.
  • the transmitter generates a magnetic field, and the current is induced or resonated according to the change in the magnetic field at the receiver to create energy.
  • the wireless power transmission apparatus may include a power amplifier (PA) for amplifying an electrical signal in order to wirelessly transmit power.
  • a power amplifier for amplifying an electrical signal in order to wirelessly transmit power.
  • a switching power amplifier that consumes less power in the power amplifier itself and can operate with relatively high efficiency than a linear power amplifier is preferred.
  • Such a switching power amplifier refers to a power amplifier that converts DC (discrete current) power into RF power through a switching operation of a switch (eg, a transistor).
  • the switching power amplifier can ideally convert DC power to RF power with 100% conversion efficiency, and depending on the circuit configuration, for example, a class-D power amplifier or a class E (class-D) power amplifier.
  • -E) can be classified as a power amplifier.
  • the class E power amplifier can operate in a relatively high frequency band (eg, a frequency band of a MHz band or higher) (hereinafter, an operating frequency) when compared to a class D power amplifier, and uses a single transistor This has the advantage that it can be implemented.
  • the class E power amplifier may include a transistor, a capacitor connected in parallel with the transistor (eg, a shunt capacitor), and a series LC resonant circuit connected in series with the transistor. Based on a signal periodically input to the input terminal of the transistor (hereinafter, the input signal), the transistor is turned on or off, so that RF power of a desired frequency is transmitted through a load network connected to the output terminal of the transistor. can be passed to the load.
  • class E power amplifiers operate non-linearly, in an electrical signal (eg, RF power) generated based on the turn on or off of the included transistor, not only a fundamental component but also a harmonic component may be included.
  • the series LC resonant circuit in order to increase the pass rate at the operating frequency (eg fundamental frequency) and increase the cutoff rate at the second or higher harmonic frequencies, the series LC resonant circuit has a high quality factor (Q). can be designed to have In order to increase the quality factor Q, the series LC resonance circuit needs to be designed with reactance elements having a large inductance value and a small capacitance value. However, in the process of obtaining a high quality factor (Q) of the series LC resonant circuit, there may be practical limitations in circuit design.
  • a reactance element eg, an inductor
  • a reactance element e.g., a capacitor
  • the resonant frequency of the series LC resonant circuit can be sensitively changed even with a small error in the capacitance value (e.g., around 2 to 5%). have.
  • a series LC resonant circuit is designed with an appropriate quality factor (Q)
  • harmonic frequency power will be radiated, causing interference to other nearby devices (e.g. electromagnetic interference, EMI). )) may occur.
  • the quality factor (Q) of the LC resonant circuit is low, in the second or higher harmonic frequency band, the load impedance (eg, harmonic impedance as viewed from the series LC resonant circuit) may change, and the drain current of the transistor The output waveform of the drain current and/or voltage may change, increasing power dissipated in the transistor and decreasing the efficiency of the power amplifier.
  • a separate harmonic adjustment circuit such as a harmonic filter may be added to the power amplifier in order to increase the cutoff ratio at the second or higher harmonic frequencies.
  • a separate harmonic adjustment circuit is added to the power amplifier, the circuit size of the power amplifier may increase, and additional losses may occur due to the added harmonic adjustment circuit, thereby reducing the efficiency of the power amplifier.
  • a power amplifier including a harmonic filter circuit for reducing harmonic output power and/or adjusting harmonic impedance may be provided.
  • a power amplifier capable of providing a harmonic filtering function may be provided by adding a minimum number of circuit elements in a load network of a basic power amplifier (eg, a class E power amplifier).
  • a basic power amplifier eg, a class E power amplifier
  • a power amplifier may include a transistor configured to be turned on or turned off based on an input signal; a first filter circuit connected between the output terminal of the transistor and the ground; and a second filter circuit connected in series to the output terminal of the transistor, wherein a first harmonic component of a signal generated based on the transistor being turned on or turned off is filtered by the first filter circuit (filtered) ), the second harmonic component of the generated signal may be filtered by the second filter circuit.
  • the change in load impedance caused by the series LC resonant circuit having a finite quality factor (Q) is adjusted and the power conversion efficiency of the power amplifier is increased.
  • a harmonic filter circuit by configuring a harmonic filter circuit by adding a minimum number of circuit elements in a basic power amplifier (eg, a class E power amplifier), the harmonic output power generated without significantly increasing the circuit complexity of the power amplifier This reduces the interference (eg EMI) to other devices in the vicinity and can increase the power conversion efficiency of the power amplifier.
  • a basic power amplifier eg, a class E power amplifier
  • FIG. 1 is a view for explaining a class E power amplifier according to a comparative example.
  • FIG. 2 is a block diagram illustrating components of a power amplifier according to various embodiments.
  • FIG. 3 is a diagram for describing an example of a power amplifier according to various embodiments of the present disclosure
  • FIG. 4 is a diagram illustrating an equivalent circuit of a power amplifier, at an operating frequency, according to various embodiments.
  • 5A is a diagram illustrating an equivalent circuit of a power amplifier at a frequency multiplied by an operating frequency, according to various embodiments.
  • 5B is a diagram illustrating an equivalent circuit of a power amplifier at a frequency multiplied by an operating frequency, according to various embodiments.
  • 5C is a diagram illustrating a reactance of a first filter circuit according to a frequency according to various embodiments of the present disclosure
  • 5D is a diagram illustrating a reactance of a second filter circuit according to a frequency according to various embodiments of the present disclosure
  • 6A is a diagram illustrating an equivalent circuit of a power amplifier 201 at a frequency multiplied by an operating frequency, according to various embodiments.
  • 6B is a diagram illustrating an equivalent circuit of a power amplifier at a frequency multiplied by an operating frequency, according to various embodiments.
  • 6C is a diagram illustrating a reactance of a first filter circuit according to a frequency according to various embodiments of the present disclosure
  • 6D is a diagram illustrating a reactance of a second filter circuit according to a frequency according to various embodiments of the present disclosure
  • FIG. 7A is a diagram for describing an example of a power amplifier including a first filter circuit according to various embodiments of the present disclosure
  • FIG. 7B is a diagram for describing an example of a power amplifier including a second filter circuit according to various embodiments of the present disclosure
  • 8A is a diagram comparing the characteristics of the conventional power amplifier with the characteristics of the power amplifier of the present invention with respect to the output power level of the second harmonic with respect to the output power of the power amplifier.
  • 8B is a diagram comparing the characteristics of the conventional power amplifier with the characteristics of the power amplifier of the present invention with respect to the output power level of the third harmonic with respect to the output power of the power amplifier.
  • 8C is a diagram comparing the efficiency of the conventional power amplifier with the efficiency of the power amplifier of the present invention.
  • FIG. 1 is a view for explaining a class E power amplifier 1 according to a comparative example.
  • Class E power amplifier (1) may include a transistor (2), a radio frequency (RF) choke inductor (L chk ) (3), a shunt capacitor (C sh ) (4) and a series LC resonant circuit (5) have.
  • the shunt capacitor 4 and the series LC resonance circuit 5 may constitute a load network of the class E power amplifier 1 .
  • the transistor 2 operates by receiving a driving voltage V DD from a DC power supply (not shown), and is input in a pulse form (eg, a square wave) through an input terminal (eg, a gate). It can be turned on or off by receiving signal 6 .
  • the transistor 2 may include a bipolar junction transistor (BJT) or a metal oxide semiconductor field effect transistor (MOSFET).
  • BJT bipolar junction transistor
  • MOSFET metal oxide semiconductor field effect transistor
  • FIG. 1 if the transistor 2 is an N-channel MOSFET (N-MOS), the input signal 6 may be a gate voltage applied to a gate terminal of the N-channel MOSFET.
  • a source of the transistor 2 may be connected to ground, and a drain may be connected to an output node 7 .
  • the RF choke inductor 3 may block transmission of an RF signal from a DC power supply (not shown) to the transistor 2 so that only DC current is transmitted to the transistor 2 .
  • the shunt capacitor 4 is connected in parallel with the transistor 2 and may be discharged or charged while the transistor 2 is turned on or off.
  • the shunt capacitor 4 may be a separate capacitor connected in parallel with the transistor 2 and may be described as a concept including the internal capacitance of the transistor 2 (eg, drain-source capacitance C ds ). .
  • RF power may be generated, which is generated via an output node 7 to the series LC resonant circuit 5 . can be transmitted. More specifically, when the transistor 2 is turned on (eg, when the transistor 2 is saturated), the transistor 2 is electrically shorted, which can be interpreted as a short circuit to ground connected to the source, The voltage at the output node 7 can be interpreted as zero. The current flowing to the transistor 2 through the RF choke inductor 3 may gradually increase.
  • the transistor 2 when the transistor 2 is turned off, the current flowing through the RF choke inductor 3 is directed to the shunt capacitor 4, and as the shunt capacitor 4 is gradually charged, the voltage at the output node 7 (eg : The voltage across the shunt capacitor 4) can increase until it reaches its maximum value. Thereafter, as the shunt capacitor 4 is gradually discharged, a current flows from the shunt capacitor 4 through the output node 7 into the series LC resonant circuit 5, while the voltage at the output node 7 (eg, the shunt capacitor ( 4) may gradually decrease.
  • the voltage at the output node 7 eg, the shunt capacitor ( 4) may gradually decrease.
  • the voltage at the output node 7 e.g. the voltage across the shunt capacitor 4 and the drain-to-source voltage of the transistor 2 (drain)
  • the transistor 2 , the shunt capacitor 4 and the input signal 6 may be set such that)
  • the current flowing through RF choke inductor 3 is directed to transistor 2, and the voltage at output node 7 is zero while transistor 2 is on.
  • the drain-source voltage of the transistor 2 (eg, the voltage of the output node 7 ) is 0 while the transistor 2 is in the on state, and through the RF choke inductor 3 during the off state Because the current flowing through the RF choke inductor 3 into the transistor 2 is zero as the current flowing towards the shunt capacitor 4 is zero (i.e. the drain-source voltage of transistor 2 is non-zero) -zero) and the period in which the drain-source current is non-zero do not overlap), the power consumed in the transistor 2 is ideally zero, and high-efficiency operation of the transistor 2 may be possible.
  • the class E power amplifier 1 since the class E power amplifier 1 generates a signal (or RF power) based on the transistor 2 being turned on or off, the generated signal (or RF power) may include not only a desired frequency component (eg, a fundamental component of an operating (resonant) frequency), but also a second or higher harmonic component, and due to the second or higher harmonic component, the power in the transistor 2 consumption may occur.
  • a desired frequency component eg, a fundamental component of an operating (resonant) frequency
  • second or higher harmonic component due to the second or higher harmonic component
  • the class E power amplifier 1 based on whether the transistor 2 is turned on or off according to the input signal 6, the transistor 2 or the shunt capacitor (2) from the RF choke inductor (3) 4) or a current flows from the shunt capacitor 4 to the series LC resonant circuit 5, an alternating current (AC) current is generated, and the generated alternating current is transferred to the series LC resonant circuit 5 may be output to the outside (eg, the matching network 8 and/or the load 9) to generate an AC voltage in the load 9 .
  • an alternating current is generated based on the above-described transistor 2 being turned on or turned off, and that a signal (or RF power) is generated based on the transistor 2 being turned on or turned off.
  • the series LC resonant circuit 5 may include an inductor L r and a capacitor C r connected in series with each other, and may include two or more inductors and two or more capacitors differently from the illustration.
  • the series LC resonant circuit 5 may be set to have a resonant frequency corresponding to the operating frequency (eg, identical) to the operating frequency of the input signal 6 .
  • an inductor (L r ) and a capacitor (L r ) and a capacitor ( C r ) may be designed to be included in the series LC resonant circuit 5 .
  • the matching network 8 is connected to the output terminal of the class E power amplifier 1 (eg, connected in series to a series LC resonant circuit 5 ), and the output impedance of the class E power amplifier 1 is loaded into the load 9 . It is possible to provide impedance matching to be matched to .
  • the load 9 may include at least one hardware component (eg, a circuit element) that receives or operates by receiving a signal (or RF power) generated by the class E power amplifier 1 .
  • a hardware component eg, a circuit element
  • FIG. 2 is a block diagram illustrating components of the power amplifier 201 according to various embodiments.
  • the power amplifier 201 may include a switch 203 , a first filter circuit 205 and/or a second filter circuit 207 .
  • a matching network 8 may be connected to an output terminal of the power amplifier 201 , and a signal (or RF power) generated by the power amplifier 201 is loaded through the matching network 8 . (9) can be transferred.
  • the first filter circuit 205 and the second filter circuit 207 may constitute a load network of the power amplifier 201 .
  • the switch 203 may include at least one transistor.
  • the switch 203 may include a transistor such as a BJT or MOSFET (eg, transistor 2 of FIG. 1 ), and may include more than one transistor, depending on the implementation.
  • the switch 203 may be turned on or off by receiving the input signal 6 .
  • the input signal 6 may be the gate voltage applied to the gate terminal of the switch 203 if it is implemented as a MOSFET.
  • the input signal 6 may be input to the gate terminal of the MOSFET from a gate driver (not shown), and at least one inductor and/or at least one between the gate driver (not shown) and the gate terminal of the MOSFET.
  • An input matching network comprising one capacitor may be disposed.
  • the input signal 6 may be biased to be close to a pinch-off voltage of a transistor (eg, a MOSFET) constituting the switch 203 .
  • a transistor eg, a MOSFET
  • an alternating current flowing through the output node 204 is generated, and the generated alternating current I o is It may be output to the outside (eg, the matching network 8) through the first filter circuit 205 and/or the second filter circuit 207, and an AC voltage V o may be generated.
  • the RF power is transferred to the external (eg, : can be transmitted to the matching network (8).
  • the switch 203 is implemented with a transistor (eg, a MOSFET), as described with reference to FIG. 1
  • the generated signal (or RF power) includes a basic component (eg, of the input signal 6 ).
  • a component corresponding to the operating frequency) and a second or higher harmonic component eg, a component corresponding to a multiplier frequency of the operating frequency (eg, a frequency obtained by multiplying an integer of 2 or more of the operating frequency) may be included.
  • the first filter circuit 205 may be connected between the output node 204 and ground.
  • the first filter circuit 205 may be connected in parallel with the switch 203 .
  • the first filter circuit 205 may include at least one reactance element.
  • the first filter circuit 205 may include a first capacitor and a first inductor connected in series with each other.
  • the first filter circuit 205 may include the shunt capacitor 4 of FIG. 1 as a component (eg, a first capacitor).
  • the first filter circuit 205 may have an electrically capacitive characteristic at an operating frequency (in other words, a fundamental frequency) of the input signal 6 .
  • the first filter circuit 205 may include a first capacitor and a first capacitor having capacitance and inductance such that a reactance value of the equivalent impedance of the first filter circuit 205 becomes negative at an operating frequency. It may be implemented to include an inductor. According to various embodiments, the first filter circuit 205 may filter a first harmonic component (eg, a second or higher harmonic component) of the generated signal (or RF power). For example, the first filter circuit 205 may operate as a bandpass filter at a frequency multiplied by an operating frequency (hereinafter, referred to as a first harmonic frequency).
  • a first harmonic frequency e.g, a second or higher harmonic component
  • the first filter circuit 205 operates as a band pass filter' at the first harmonic frequency means that at the first harmonic frequency, the first filter circuit 205 is electrically and/or the reactance value (eg, Equation 2 to be described later) of the equivalent impedance (in other words, harmonic impedance) of the first filter circuit 205 is 0 (or a value close to 0) can be explained as being
  • the first filter circuit 205 has a capacitance that causes it to operate as a band pass filter at the first harmonic frequency (in other words, such that the reactance value of the equivalent impedance of the first filter circuit 205 becomes zero) and It may be implemented to include a first capacitor having an inductance and a first inductor.
  • an electrically short circuit is formed between the output node 204 and ground, and the generated A first harmonic component (eg, a second or higher harmonic component) of a signal (eg, alternating current) (or RF power) may not be transmitted to the second filter circuit 207 .
  • a first harmonic component (eg, second or higher harmonic component) of a generated signal (eg, alternating current) (or RF power) is transmitted to the second filter circuit 207 . It may be explained that the first harmonic component of the generated signal is removed, and/or that the first harmonic component is filtered.
  • the first filter circuit 205 includes reactance elements that are electrically capacitive at the operating frequency of the input signal 6 and electrically short-circuited at the first harmonic frequency.
  • reactance elements that are electrically capacitive at the operating frequency of the input signal 6 and electrically short-circuited at the first harmonic frequency.
  • the second filter circuit 207 may be connected in series with one end (eg, the output node 204 ) of the switch 203 .
  • the second filter circuit 207 may include at least one reactance element.
  • the second filter circuit 207 may include a second capacitor and a second inductor connected in parallel to each other, and a third capacitor.
  • the second filter circuit 207 includes a series LC resonant circuit of the class E power amplifier, and in the class E power amplifier, a second It may be explained that a capacitor is added.
  • the second filter circuit 207 may operate as a band pass filter at the operating frequency (in other words, the fundamental frequency) of the input signal 6 .
  • the second filter circuit 207 operates as a band pass filter' at the operating frequency means that at the operating frequency, the second filter circuit 207 is electrically shorted and / Alternatively, it may be described that the reactance value (eg, Equation 4 to be described later) of the equivalent impedance (in other words, harmonic impedance) of the second filter circuit 207 becomes 0 (or a value close to 0).
  • the second filter circuit 207 may be set to have a resonant frequency corresponding to (eg, coincident with) the operating frequency.
  • the second filter circuit 207 causes the second filter circuit 207 to operate as a band pass filter at the operating frequency (in other words, the reactance value of the equivalent impedance of the second filter circuit 207 is zero) It may be implemented to include a second capacitor having a capacitance and an inductance, a second inductor, and a third capacitor. According to various embodiments, the second filter circuit 207 may filter the second harmonic component (eg, second or higher harmonic component) of the generated signal (eg, alternating current) (or RF power). .
  • the second filter circuit 207 is configured to perform a bandstop filter (in other words, a band reject filter) at a multiplier frequency (hereinafter, second harmonic frequency) of the operating frequency of the input signal 6 .
  • the second filter circuit 207 operates as a band stop filter' at the second harmonic frequency means that at the second harmonic frequency, the second filter circuit 207 is electrically and/or the reactance value (eg, Equation 4 to be described later) of the equivalent impedance (in other words, harmonic impedance) of the second filter circuit 207 becomes infinity (or a very large value). have.
  • the second filter circuit 207 operates as a band-stop filter at the second harmonic frequency (in other words, the reactance value of the equivalent impedance of the second filter circuit 207 is very large (eg, infinity) ) may be implemented to include a second capacitor having a capacitance and an inductance, a second inductor, and a third capacitor.
  • the impedance looking at the second filter circuit 207 from the output node 204 is very becomes a large value (eg, infinity), and the second harmonic component (eg, second or higher harmonic component) of the generated signal (eg alternating current) (or RF power) does not pass through the second filter circuit 207 .
  • a second harmonic component eg, second or higher harmonic component of a generated signal (eg, alternating current) (or RF power) passes through the second filter circuit 207 .
  • the second filter circuit 207 may include reactance elements that are electrically short-circuited at the operating frequency of the input signal 6 and electrically open at the second harmonic frequency.
  • the configuration and connection relationship of the specific reactance elements will be described in more detail with reference to the drawings to be described later.
  • the first filter circuit 205 is electrically capacitive and the second filter circuit 207 has the characteristic of operating (in other words, electrically shorted) as a band pass filter. Therefore, similar to the conventional class E power amplifier 1, based on the turn-on or turn-off of the switch 203, RF power may be generated (eg, DC power is converted into RF power).
  • the first filter circuit 205 operates as a band-pass filter (in other words, electrically shorted), and/or the second filter circuit 207 operates as a band-stop filter (otherwise electrically short-circuited).
  • the harmonic components of the generated signal e.g. alternating current
  • RF power are not transmitted to the outside (e.g. matching network 8 and/or load 9). it may not be
  • the first harmonic frequency and the second harmonic frequency may be different.
  • the first harmonic component is the second harmonics of the generated signal (eg alternating current) (or RF power) and the first harmonic frequency is a frequency of twice the operating frequency (in other words, 2 multiplier frequency).
  • the second harmonic components are the third harmonics of the generated signal (eg alternating current) (or RF power) and the second harmonic frequency is a frequency that is three times the operating frequency (in other words, triplex frequency).
  • the first harmonic component may be a third harmonic of the generated signal (eg, alternating current) (or RF power), and the first harmonic frequency may be three times the operating frequency.
  • the second harmonic component may be a second harmonic of the generated generated signal (eg, alternating current) (or RF power) and the second harmonic frequency may be a frequency twice the operating frequency.
  • the first harmonic frequency and the second harmonic frequency may be set to a frequency of 4 or more multiples of the operating frequency, in which case the first filter circuit 205 and/or the second filter circuit ( 207) may filter the 4th or higher harmonics.
  • the power amplifier 201 may be implemented differently than shown.
  • the second filter circuit 207 may be arranged such that one end is connected to the output node 204 and the other end is connected to one end of the first filter circuit 205 and the matching network 8 .
  • the first filter circuit 205 may be arranged such that one end is connected to the second filter circuit 207 and the matching network 8 and the other end is connected to the ground.
  • the power amplifier 201 may include only one of the first filter circuit 205 and the second filter circuit 207 .
  • a signal generated based on whether the switch 203 is turned on or off eg, : A first harmonic component of an alternating current (I o )) (or RF power) is filtered by the first filter circuit 205 , and a generated signal (eg, alternating current (I o )) (or RF power)
  • the second harmonic component of may be filtered by the second filter circuit 207, and will be described in more detail with reference to the drawings to be described later.
  • FIG 3 is a view for explaining an example of the power amplifier 201 according to various embodiments.
  • the power amplifier 201 includes a transistor 301 (eg, the switch 203 of FIG. 2 ), an RF choke inductor (L chk ) 303 , a first filter circuit 205 and/or Alternatively, a second filter circuit 207 may be included.
  • the transistor 301 operates by receiving a driving voltage V DD from a DC power source (not shown), and is input in a pulse form (eg, a square wave) through an input terminal (eg, a gate). By receiving the signal 6, it can be turned on or off.
  • the transistor 301 may include an N-channel MOSFET and, depending on implementation, may include various switching elements such as a P-channel MOSFET or a BJT.
  • the RF choke inductor 303 may block transmission of an RF signal from a DC power supply (not shown) to the transistor 301 so that only a DC current is transmitted to the transistor 301 .
  • the first filter circuit 205 may include a first capacitor (C 1 ) 305a and a first inductor (L 2 ) 305b connected in series with each other.
  • the first filter circuit 205 is a first filter circuit having a capacitance and an inductance such that the first filter circuit 205 is electrically capacitive at the operating frequency and electrically shorted at the first harmonic frequency. It may be implemented to include one capacitor 305a and a first inductor 305b.
  • the equivalent impedance Z eq1 in other words, the nth harmonic impedance
  • the internal resistance components of the first capacitor 305a and the first inductor 305b are ignored in Equation (1).
  • C 1 is the capacitance value of the first capacitor 305a
  • L 1 is the inductance value of the first inductor 305b
  • f 0 is the operating frequency (in other words, the fundamental frequency) of the transistor 301 .
  • nf 0 may represent a frequency n times the operating frequency.
  • Equation 1 The imaginary part of Equation 1 (Z eq1 ) may be the same as Equation 2 .
  • the imaginary part of Z eq1 is a negative value
  • the imaginary part of Z eq1 is It may be implemented to include a first capacitor 305a and a first inductor 305b having a capacitance value (C 1 in Equation 2) and an inductance value (L 1 in Equation 2) to be zero.
  • C 1 may be set to 0.92 nF
  • L 1 may be set to 150 nH.
  • the second filter circuit 207 may be connected in series with one end of the transistor 301 .
  • the second filter circuit 207 may include a second inductor 307a and a second capacitor 307b connected in parallel to each other, and a third capacitor 307c.
  • the second filter circuit 207 is a second inductor having a capacitance and inductance such that the second filter circuit 207 is electrically shorted at an operating frequency and electrically open at a second harmonic frequency. It may be implemented to include a 307a, a second capacitor 307b, and a third capacitor 307c.
  • the equivalent impedance Z eq2 (in other words, the nth harmonic impedance) of the second filter circuit 207 may be expressed as Equation (2).
  • Equation (2) the equivalent impedance Z eq2 (in other words, the nth harmonic impedance) of the second filter circuit 207 may be expressed as Equation (2).
  • internal resistance components of the second inductor 307a , the second capacitor 307b , and the third capacitor 307c are ignored in Equation 3 .
  • Equation 3 L 2 is the inductance value of the second inductor 307a, C 2 is the capacitance value of the second capacitor 307b, C 3 is the capacitance value of the third capacitor 307c, and f 0 is the transistor
  • n is an integer value, and nf 0 may represent a frequency n times the operating frequency.
  • Equation 3 The imaginary part of Equation 3 (Z eq2 ) may be the same as Equation 4.
  • the imaginary part of Z eq2 is 0, and when n is an integer greater than or equal to 2 (eg, 2 or 3), the imaginary part of Z eq2 is infinite. to include a second inductor 307a, a second capacitor 307b, and a third capacitor 307c having a capacitance (C 2 and C 3 in Equation 4) and an inductance (L 2 in Equation 4) can be implemented.
  • FIG. 4 is a diagram illustrating an equivalent circuit of a power amplifier 201 at an operating frequency (in other words, a fundamental frequency), in accordance with various embodiments.
  • the first filter circuit 205 may be electrically capacitive, and the second filter circuit 207 may be electrically shorted.
  • a current flows to the first filter circuit 205 or a current flows from the first filter circuit 205 to the second filter circuit 207 to generate an alternating current (I f0 ), and the generated alternating current is the second
  • An alternating voltage may be generated externally (eg, the matching network 8 and/or the load 9 of FIG. 2 ) through the filter circuit 207 .
  • a signal while the transistor 301 is turned on or off. eg, alternating current I f0 ) (or RF power) may be generated.
  • the impedance (eg, reactance) of the second filter circuit 207 has a value of zero (in other words, the second filter circuit 207 is electrically shorted).
  • a component of the frequency f 0 ) I f0 may be transmitted externally (eg, the matching network 8 and/or the load 9 of FIG. 2 ).
  • 5A is a diagram illustrating an equivalent circuit of the power amplifier 201 at a frequency (eg, 2f 0 ) multiplied by an operating frequency (in other words, a fundamental frequency), according to various embodiments.
  • 5B is a diagram illustrating an equivalent circuit of the power amplifier 201 at a frequency (eg, 3f 0 ) multiplied by an operating frequency (in other words, a fundamental frequency), according to various embodiments.
  • FIG. 5C is a diagram illustrating a reactance of a first filter circuit (eg, the first filter circuit 205 of FIG. 2 ) according to a frequency according to various embodiments of the present disclosure.
  • 5D is a diagram illustrating a reactance of a second filter circuit (eg, the second filter circuit 207 of FIG. 2 ) according to a frequency according to various embodiments of the present disclosure.
  • the reactance of the first filter circuit 205 according to the frequency shown in FIG. 5C may represent, for example, an imaginary part (eg, Equation 2) of Z eq1 .
  • the reactance of the second filter circuit 207 according to the frequency shown in FIG. 5D may represent, for example, an imaginary part (eg, Equation 4) of Z eq2 .
  • the first harmonic component filtered by the first filter circuit 205 is the third harmonic
  • the second harmonic component filtered by the second filter circuit 207 is the second harmonic.
  • An embodiment is shown.
  • the impedance (eg, reactance) of the first filter circuit 205 has a negative value (in other words, the first filter circuit 205 is electrically capacitive).
  • a signal eg, alternating current
  • RF power may be generated as the switch 203 is turned on or off according to the input signal 6 .
  • the second filter circuit 207 may be electrically open.
  • the reactance of the second filter circuit 207 may have a very large value (eg, + ⁇ or - ⁇ ) at the double frequency (2f 0 ).
  • the first filter circuit 205 may have a finite reactance value at the double frequency (2f 0 ), and with reference to FIG. 5C , the reactance of the first filter circuit 205 may have a negative value.
  • the second harmonic component (eg, 2) of the generated signal eg, alternating current
  • the second harmonic) (I 2f0 ) may not be filtered by the second filter circuit 207 and passed to the outside (eg, the matching network 8 and/or the load 9 of FIG. 2 ).
  • the second harmonic load impedance of the transistor 301 eg, at the double frequency, the transistor
  • the impedance looking at the first filter circuit 205 and the second filter circuit 207 from the output terminal of 301 is the impedance after the second filter circuit 207 (eg, looking at the other end of the second filter circuit 207 )
  • impedance eg, Z L of FIG. 4
  • the first filter circuit 205 may be electrically shorted.
  • the reactance of the first filter circuit 205 may have a value of 0 at the triplet frequency 3f 0 .
  • the second filter circuit 207 may have a finite reactance value at the triplet frequency 3f 0 , and with reference to FIG. 5D , the reactance of the second filter circuit 207 may have a negative value.
  • the impedance (eg, reactance) of the first filter circuit 205 has a value of zero (in other words, the first filter circuit 205 electrically shorted), the first harmonic component (eg, 3) of the signal (eg, alternating current) (or RF power) generated as the switch 203 is turned on or off according to the input signal 6
  • the second harmonic) (I 3f0 ) is filtered by the first filter circuit 205 and is not passed to the second filter circuit 207 and to the outside (eg matching network 8 and/or load 9 in FIG. 2 ).
  • the third harmonic load impedance of the transistor 301 (eg, at the triplet frequency, the transistor The impedance when the first filter circuit 205 and the second filter circuit 207 are viewed from the output terminal of 301 may be set to a low impedance.
  • 6A is a diagram illustrating an equivalent circuit of the power amplifier 201 at a frequency (eg, 2f 0 ) multiplied by an operating frequency (in other words, a fundamental frequency), according to various embodiments.
  • 6B is a diagram illustrating an equivalent circuit of the power amplifier 201 at a multiplied frequency (eg, 3f 0 ) of an operating frequency (in other words, a fundamental frequency), according to various embodiments.
  • 6C is a diagram illustrating a reactance of a first filter circuit (eg, the first filter circuit 205 of FIG. 2 ) according to a frequency according to various embodiments of the present disclosure.
  • 6D is a diagram illustrating a reactance of a second filter circuit (eg, the second filter circuit 207 of FIG. 2 ) according to a frequency according to various embodiments of the present disclosure.
  • the reactance of the first filter circuit 205 according to the frequency shown in FIG. 6C may represent, for example, an imaginary part (eg, Equation 2) of Z eq1 .
  • the reactance of the second filter circuit 207 according to the frequency shown in FIG. 6D may represent, for example, an imaginary part (eg, Equation 4) of Z eq2 .
  • the first harmonic component filtered by the first filter circuit 205 is the second harmonic
  • the second harmonic component filtered by the second filter circuit 207 is the third harmonic.
  • An embodiment is shown.
  • the switch 203 is switched according to the input signal 6 based on the impedance (eg, reactance) of the first filter circuit 205 being electrically capacitive.
  • a signal eg, alternating current
  • RF power may be generated as it is turned on or off.
  • the first filter circuit 205 may be electrically shorted.
  • the reactance of the first filter circuit 205 may have a value of 0 at the double frequency (2f 0 ).
  • the second filter circuit 207 may have a finite reactance value at the double frequency (2f 0 ), and with reference to FIG. 6D , the reactance of the second filter circuit 207 may have a positive value.
  • the impedance (eg, reactance) of the first filter circuit 205 has a value of zero (in other words, the first filter circuit 205 is electrically shorted), the first harmonic component (eg, 2) of the signal (eg, alternating current) (or RF power) generated as the switch 203 is turned on or off according to the input signal 6
  • the second harmonic) (I 2f0 ) is filtered by the first filter circuit 205 and is not passed to the second filter circuit 207 and external (eg matching network 8 and/or load 9 in FIG. 2 ).
  • the second harmonic load impedance of the transistor 301 (eg, at the double frequency, the transistor The impedance when the first filter circuit 205 and the second filter circuit 207 are viewed from the output terminal of 301 may be set to a low impedance.
  • the second filter circuit 207 may be electrically open.
  • the reactance of the second filter circuit 207 may have a very large value (eg, + ⁇ or - ⁇ ) at the triplet frequency 3f 0 .
  • the first filter circuit 205 may have a finite reactance value at the triplet frequency 3f 0 , and with reference to FIG. 6C , the reactance of the first filter circuit 205 . may have a positive value.
  • the impedance (eg, reactance) of the second filter circuit 207 has a very large value (eg, + ⁇ or - ⁇ ) (in other words, Based on the second filter circuit 207 electrically open), the second harmonic component (eg, third harmonic) (I 3f0 ) of the generated signal (eg, alternating current) is converted into the second filter circuit 207 ) It may not be filtered by , and transmitted externally (eg, matching network 8 and/or load 9 in FIG. 2 ).
  • the third harmonic load impedance of the transistor 301 eg, at the triplet frequency, the transistor
  • the impedance looking at the first filter circuit 205 and the second filter circuit 207 from the output terminal of 301 is the impedance after the second filter circuit 207 (eg, looking at the other end of the second filter circuit 207 )
  • impedance eg, Z L of FIG. 4
  • FIG. 7A is a diagram for describing an example of a power amplifier 201 including a first filter circuit 205 according to various embodiments of the present disclosure.
  • FIG. 7A shows a power amplifier 201 comprising a series LC resonant circuit 701 instead of a second filter circuit 207 as compared to the power amplifier 201 of FIG. 4 .
  • the power amplifier 201 includes a transistor 301 (eg, the switch 203 of FIG. 2 ), an RF choke inductor (L chk ) 303 , a first filter circuit 205 and/or Alternatively, it may include a series LC resonant circuit 701 (eg, the series LC resonant circuit 5 of FIG. 1 ).
  • the transistor 301 operates by receiving a driving voltage V DD from a DC power source (not shown), and is input in a pulse form (eg, a square wave) through an input terminal (eg, a gate). By receiving the signal 6, it can be turned on or off.
  • the transistor 301 may include an N-channel MOSFET and, depending on implementation, may include various switching elements such as a P-channel MOSFET or a BJT.
  • the RF choke inductor 303 may block transmission of an RF signal from a DC power supply (not shown) to the transistor 301 so that only a DC current is transmitted to the transistor 301 .
  • the first filter circuit 205 may include a first capacitor (C 1 ) 305a and a first inductor (L 2 ) 305b connected in series with each other.
  • the first filter circuit 205 may be configured such that the first filter circuit 205 is electrically capacitive at the operating frequency and has a first harmonic frequency (eg, a double frequency (2f 0 ) or 3 ). It may be implemented to include a first capacitor 305a and a first inductor 305b having capacitance and inductance to be electrically short-circuited at the multiplied frequency 3f 0 ).
  • the switch 203 is turned on or off according to the input signal 6 , based on the first filter circuit 205 being electrically capacitive.
  • a signal eg, alternating current
  • RF power may be generated.
  • the input signal (6) As the transistor 301 is turned on or off, the first harmonic component (eg, the second harmonic (I 2f0 ) or the third harmonic (I) 3f0 ) may not be filtered by the first filter circuit 205 and passed to the series LC resonant circuit 701 and external (eg, the matching network 8 and/or the load 9 in FIG. 2 ).
  • the first harmonic component eg, the second harmonic (I 2f0 ) or the third harmonic (I) 3f0
  • the series LC resonant circuit 701 and external eg, the matching network 8 and/or the load 9 in FIG. 2 ).
  • the series LC resonance circuit 701 may include a second inductor L 2 and a third capacitor C 3 connected in series with each other.
  • the series LC resonant circuit 701 includes a second inductor having a capacitance and an inductance that causes the series LC resonant circuit 701 to resonate at an operating frequency (eg, electrically short at the operating frequency). L 2 ) and a third capacitor C 3 may be implemented.
  • the series LC resonant circuit 701 acts as a band pass filter (in other words, electrically shorted), based on the input signal 6 , the transistor As 301 is turned on or off, a fundamental component (eg, a component corresponding to the operating frequency of the input signal 6 ) of the generated signal (eg, alternating current) (or RF power) is a series LC resonance It may be passed through the circuit 701 to the outside (eg, the matching network 8 and/or the load 9 of FIG. 2 ).
  • a fundamental component eg, a component corresponding to the operating frequency of the input signal 6
  • the generated signal eg, alternating current
  • RF power RF power
  • a basic component eg, an input signal (eg, an input signal ( At least some of the frequency components different from the component corresponding to the operating frequency of 6) are filtered (or suppressed) by the series LC resonant circuit 701 operating as a band pass filter for the operating frequency f 0 . )
  • may not be transmitted externally eg, matching network 8 and/or load 9 in FIG. 2 ).
  • FIG. 7B is a diagram for explaining an example of the power amplifier 201 including the second filter circuit 207 according to various embodiments.
  • FIG. 7B includes only the first capacitor 305a instead of the first filter circuit 205 including the first capacitor 305a and the first inductor 305b when compared with the power amplifier 201 of FIG. 4 . shows the power amplifier 201 (in other words, does not include the first inductor 305b).
  • power amplifier 201 includes transistor 301 (eg, switch 203 of FIG. 2 ), RF choke inductor (L chk ) 303 , first capacitor 305a and/or A second filter circuit 207 may be included.
  • the transistor 301 operates by receiving a driving voltage V DD from a DC power source (not shown), and is input in a pulse form (eg, a square wave) through an input terminal (eg, a gate). By receiving the signal 6, it can be turned on or off.
  • the transistor 301 may include an N-channel MOSFET and, depending on implementation, may include various switching elements such as a P-channel MOSFET or a BJT.
  • the RF choke inductor 303 may block transmission of an RF signal from a DC power supply (not shown) to the transistor 301 so that only a DC current is transmitted to the transistor 301 .
  • the first capacitor 305a may be connected between the output terminal of the transistor 301 and the ground.
  • the first capacitor 305a may be connected in parallel with the transistor 301 .
  • the first capacitor 305a is described as a concept including the internal capacitance (in other words, parasitic capacitance) of the transistor 301 (eg, drain-source capacitance (C ds )) it might be
  • the first capacitor 305a may be electrically capacitive at the operating frequency f 0 .
  • the first capacitor 305a is electrically capacitive at the operating frequency f 0 , as the switch 203 is turned on or off according to the input signal 6 .
  • a signal eg, alternating current
  • RF power may be generated.
  • the second filter circuit 207 may be connected in series with one end of the transistor 301 .
  • the second filter circuit 207 may include a second inductor 307a and a second capacitor 307b connected in parallel to each other, and a third capacitor 307c.
  • the second filter circuit 207 may be configured such that the second filter circuit 207 is electrically shorted at an operating frequency, and a second harmonic frequency (eg, a double frequency (2f 0 ) or a triple frequency frequency) (3f 0 )) may be implemented to include a second inductor 307a, a second capacitor 307b, and a third capacitor 307c having a capacitance and an inductance to be electrically open.
  • a second harmonic frequency eg, a double frequency (2f 0 ) or a triple frequency frequency
  • the transistor 301 is turned on or off according to the input signal 6 .
  • a fundamental component eg, a component corresponding to the operating frequency of the input signal 6
  • the converted signal eg, alternating current
  • RF power passes through the second filter circuit 207 to the outside (eg, in FIG. 2 of the matching network 8 and/or load 9).
  • a basic component eg, an input signal (eg, an input signal ( At least some of the frequency components different from the component corresponding to the operating frequency of 6) are filtered (or suppressed) by the second filter circuit 207 and external (eg, the matching network 8 of FIG. 2 ) ) and/or rod 9).
  • the input signal ( 6), the second harmonic component (eg, the second harmonic (I 2f0 ) or the third harmonic) of the signal (eg, alternating current) (or RF power) generated as the transistor 301 is turned on or off according to 6) (I 3f0 )) may not be filtered by the second filter circuit 207 and passed to the outside (eg, the matching network 8 and/or the load 9 of FIG. 2 ).
  • 8A shows the characteristics of a conventional power amplifier (eg, the class E power amplifier 1 of FIG. 1 ) and the power amplifier of the present invention with respect to the output power level of the second harmonic with respect to the output power of the power amplifier. It is a diagram comparing characteristics of (eg, the power amplifier 201 of FIG. 2 ).
  • 8B shows the characteristics of the conventional power amplifier (eg, class E power amplifier 1) and the power amplifier of the present invention (eg, the power amplifier ( 201))) is a diagram comparing the characteristics.
  • 8C is a diagram comparing the efficiency of a conventional power amplifier (eg, the class E power amplifier 1) with the efficiency of the power amplifier of the present invention (eg, the power amplifier 201).
  • the power amplifier 201 of the present invention includes a first filter circuit (eg, the first filter circuit 205 of FIG. 2 ) and a second filter circuit ( Example: to be implemented such that the second filter circuit 207 of FIG. 2 ) is included, the third harmonic is filtered by the first filter circuit 205 , and the second harmonic is filtered by the second filter circuit 207 .
  • a first filter circuit eg, the first filter circuit 205 of FIG. 2
  • a second filter circuit Example: to be implemented such that the second filter circuit 207 of FIG. 2
  • the third harmonic is filtered by the first filter circuit 205
  • the second harmonic is filtered by the second filter circuit 207 .
  • “Conventional” indicates the output power level of the second harmonic of a conventional power amplifier (eg, class E power amplifier 1)
  • “Proposed” is the power amplifier of the present invention (eg: It represents the output power level of the second harmonic of the power amplifier 201).
  • the output power level of the second harmonic of the power amplifier of the present invention eg, the power amplifier 201
  • the output power level of the conventional power amplifier eg: It can be confirmed that it is lower than the output power level of the second harmonic of the class E power amplifier 1).
  • the power amplifier eg, the power amplifier 201 of the present invention filters the second harmonic, so that the harmonic output power output to the outside is lower than that of the conventional power amplifier (eg, the class E power amplifier (1)) can represent Through this, interference (eg, EMI) to other devices positioned around the power amplifier 201 may be resolved.
  • EMI interference
  • “Conventional” indicates the output power level of the third harmonic of a conventional power amplifier (eg, class E power amplifier 1)
  • “Proposed” is the power amplifier of the present invention (eg: It represents the output power level of the third harmonic of the power amplifier 201).
  • the output power level of the third harmonic of the power amplifier (eg, power amplifier 201 ) of the present invention is equal to that of the conventional power amplifier (eg: It can be confirmed that it is lower than the output power level of the third harmonic of the class E power amplifier 1).
  • the power amplifier eg, the power amplifier 201 of the present invention filters the third harmonic, so that the harmonic output power output to the outside is lower than that of the conventional power amplifier (eg, the class E power amplifier (1)) can represent Through this, interference (eg, EMI) to other devices positioned around the power amplifier 201 may be resolved.
  • EMI interference
  • “Conventional” indicates the efficiency of a conventional power amplifier (eg, class E power amplifier 1) with respect to output power (“output(dBm)”)
  • “Proposed” indicates the output power Shows the efficiency of the power amplifier of the present invention (eg, power amplifier 201) with respect to ("output(dBm)").
  • output power(dbm) the efficiency of the inventive power amplifier
  • the efficiency of the inventive power amplifier is substantially the same as that of the conventional power amplifier (eg, the class E power amplifier 1).
  • the power amplifier (eg, the power amplifier 201) lowers the harmonic output power output externally than the conventional power amplifier (eg, the class E power amplifier 1), the conventional power amplifier (eg, the class E power) It can be shown that high efficiency equivalent to the amplifier (1)) is possible.
  • the power amplifier (eg, power amplifier 201 of FIG. 2 ) is turned on or turned off based on an input signal (eg, input signal 6 of FIG. 2 ).
  • a transistor set to be turned off eg, the transistor 301 of FIG. 3 );
  • a first filter circuit eg, first filter circuit 205 in FIG. 2
  • a second filter circuit eg, the second filter circuit 207 of FIG. 2
  • the first harmonic component of the signal generated based on the transistor being turned on or turned off. component may be filtered by the first filter circuit, and the second harmonic component of the generated signal may be filtered by the second filter circuit.
  • the first filter circuit may operate as a band pass filter at a first harmonic frequency corresponding to the first harmonic component.
  • the first harmonic component of the generated signal may not be output to a load electrically connected to the power amplifier.
  • the first filter circuit may include a first capacitor (eg, the first capacitor ( 305a)) and a first inductor (eg, the first inductor 305b of FIG. 3 ), and the first capacitor and the first inductor may be connected to each other in series.
  • a first capacitor eg, the first capacitor ( 305a)
  • a first inductor eg, the first inductor 305b of FIG. 3
  • the first filter circuit may be electrically capacitive at an operating frequency of an input signal for turning on or off the transistor.
  • the second filter circuit may operate as a band stop filter at the second harmonic frequency corresponding to the second harmonic component.
  • the second filter circuit outputs the second harmonic component of the generated signal to a load electrically connected to the power amplifier based on the second filter circuit operating as a band stop filter at the second harmonic frequency. It may not be
  • a second capacitor (eg, the second capacitor 307b of FIG. 3 ) having a capacitance value and an inductance value that causes the second filter circuit to operate as a band-stop filter at the second harmonic frequency
  • the third A capacitor eg, the third capacitor 307c of FIG. 3
  • a second inductor eg, the second inductor 307a of FIG. 3
  • the second filter circuit may operate as a band pass filter at an operating frequency of an input signal for turning on or off the transistor.
  • the first harmonic component may include second harmonics of the generated signal, and the second harmonic component may include third harmonics of the generated signal.
  • the first harmonic component may include a third harmonic of the generated signal
  • the second harmonic component may include a second harmonic of the generated signal
  • the first filter circuit may be connected in parallel with the transistor.
  • one end of the second filter circuit may be connected to an output terminal of the transistor and one end of the first filter circuit, and the other end may be connected to a matching network (eg, the matching network 8 of FIG. 2 ).
  • the other end of the first filter circuit may be connected to the ground.
  • one end of the first filter circuit may be connected to a matching network.
  • first, second, or first or second may simply be used to distinguish an element from other elements in question, and may refer elements to other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.
  • module used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit.
  • a module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101).
  • a storage medium eg, internal memory 136 or external memory 138
  • the processor eg, the processor 120
  • the device eg, the electronic device 101
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.
  • a signal eg, electromagnetic wave
  • the method according to various embodiments disclosed in this document may be provided in a computer program product (computer program product).
  • Computer program products may be traded between sellers and buyers as commodities.
  • the computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones).
  • a portion of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.
  • each component eg, a module or a program of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. , or one or more other operations may be added.

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

Abstract

Un amplificateur de puissance, selon divers modes de réalisation, comprend : un ensemble transistor à mettre à l'état passant ou non passant sur la base d'un signal d'entrée ; un premier circuit filtrant connecté entre une masse et une borne de sortie du transistor ; et un second circuit filtrant connecté en série à la borne de sortie du transistor, une première composante harmonique d'un signal généré sur la base du fait que le transistor est à l'état passant ou non passant étant filtrée par le premier circuit filtrant, et une seconde composante harmonique du signal qui est généré pouvant être filtrée par le second circuit filtrant.
PCT/KR2022/001053 2021-03-19 2022-01-20 Amplificateur de puissance comprenant un filtre d'harmonique WO2022196920A1 (fr)

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KR1020210035898A KR20220130978A (ko) 2021-03-19 2021-03-19 하모닉 필터를 포함하는 전력 증폭기
KR10-2021-0035898 2021-03-19

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Citations (5)

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Publication number Priority date Publication date Assignee Title
KR20070023854A (ko) * 2005-08-25 2007-03-02 주식회사 팬택앤큐리텔 이동통신 단말기의 고조파 제거 장치
KR20090102890A (ko) * 2008-03-27 2009-10-01 경희대학교 산학협력단 전력효율이 향상된 ｅ급 전력 증폭기
KR20130085879A (ko) * 2012-01-20 2013-07-30 홍익대학교 산학협력단 무선 전력 전송을 위한 고효율 ｄｃ－ａｃ 변환 회로
KR20140031153A (ko) * 2012-09-04 2014-03-12 인피니언 테크놀로지스 아게 전력 증폭기를 위한 시스템 및 방법
KR20150068650A (ko) * 2013-12-12 2015-06-22 삼성전기주식회사 인버티드 토폴로지를 이용한 신호 증폭기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070023854A (ko) * 2005-08-25 2007-03-02 주식회사 팬택앤큐리텔 이동통신 단말기의 고조파 제거 장치
KR20090102890A (ko) * 2008-03-27 2009-10-01 경희대학교 산학협력단 전력효율이 향상된 ｅ급 전력 증폭기
KR20130085879A (ko) * 2012-01-20 2013-07-30 홍익대학교 산학협력단 무선 전력 전송을 위한 고효율 ｄｃ－ａｃ 변환 회로
KR20140031153A (ko) * 2012-09-04 2014-03-12 인피니언 테크놀로지스 아게 전력 증폭기를 위한 시스템 및 방법
KR20150068650A (ko) * 2013-12-12 2015-06-22 삼성전기주식회사 인버티드 토폴로지를 이용한 신호 증폭기

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