WO2008075561A1 - 電力増幅装置 - Google Patents
電力増幅装置 Download PDFInfo
- Publication number
- WO2008075561A1 WO2008075561A1 PCT/JP2007/073504 JP2007073504W WO2008075561A1 WO 2008075561 A1 WO2008075561 A1 WO 2008075561A1 JP 2007073504 W JP2007073504 W JP 2007073504W WO 2008075561 A1 WO2008075561 A1 WO 2008075561A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- output
- power
- drain
- amplifier
- Prior art date
Links
Classifications
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
- H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
- H03F1/0238—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply using supply converters
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
- H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
- H03F1/07—Doherty-type amplifiers
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0244—Stepped control
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
Definitions
- the present invention relates to a power amplifying device that is used in a wireless communication device such as a mobile phone in terrestrial cellular communication and a communication terminal device in satellite communication and requires high efficiency.
- a conventional high-efficiency power amplifying apparatus is configured by a Doherty amplifier that combines a carrier amplifier and a peak amplifier (see, for example, Non-Patent Document 1).
- the carrier amplifier ensures linearity when the input signal is small (hereinafter referred to as “small signal”), and the peak amplifier is used when the input signal is large (hereinafter referred to as “large signal”). Used to secure saturation power.
- the input signal input to the Doherty amplifier is divided into two, one input to the carrier amplifier and the other input to the peak amplifier. Since the carrier amplifier is normally biased from class A to class AB or class B, it amplifies and outputs regardless of the level of the input signal.
- the peak amplifier Since the peak amplifier is normally biased to class C, it is inactive when there is a small signal, and is active when there is a large signal, and amplifies and outputs the signal. In other words, since only the carrier amplifier operates when the signal is small, the operation is highly efficient. When the signal is large, the outputs of the carrier amplifier and the peak amplifier are combined to ensure high saturation power.
- Non-Patent Document 1 Masatoshi Nakayama, Nao Takagi, “A method for improving distortion and efficiency of power amplifiers”, MW E2004 Microwave Workshops Digest. P575— 584
- the present invention has been made to solve the above-described problems, and its object is to be used in a wireless communication device such as a mobile phone in a ground cellular communication and a communication terminal device in a satellite communication.
- a wireless communication device such as a mobile phone in a ground cellular communication and a communication terminal device in a satellite communication.
- This is a power amplifying device that has a high power efficiency even in the case of a small signal.
- a power amplifying device includes a DC power source that outputs a first drain voltage, a carrier amplifier and a peak amplifier connected in parallel, a Doherty amplifier that amplifies an RF signal, and an output power If the output power is less than the predetermined value, the first command is output to output a low voltage, and if the output power is greater than the predetermined value, the second command is output to output a high voltage.
- the second drain voltage obtained by converting the first drain voltage or the first drain voltage is applied to the drain terminals of the carrier amplifier and the peak amplifier. Voltage applied to the drain terminals of the carrier amplifier and the peak amplifier, based on the second command, the first drain voltage or the second drain voltage obtained by converting the first drain voltage.
- a conversion circuit is provided.
- the power amplifying device applies a low voltage to the drain terminal when the output power is less than or equal to a predetermined value, and applies a high voltage to the drain terminal when the output power is greater than the predetermined value.
- a predetermined value When small signals are used, it is possible to improve power efficiency by operating at a low voltage.
- FIG. 1 is a diagram showing a configuration of a power amplifying device according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing a circuit configuration of a carrier amplifier of the Doherty amplifier of the power amplifying device according to Embodiment 1 of the present invention.
- FIG. 3 A diagram showing the setting of the operating point of the FET of the power amplifying device according to Embodiment 1 of the present invention.
- FIG. 4 Low voltage operation and high voltage operation of the power amplifying device according to Embodiment 1 of the present invention. Place It is a graph which shows the relationship between the input electric power and output electric power in case.
- FIG. 5 is a graph showing a relationship between output power and drain efficiency in the case of low voltage operation and high voltage operation of the power amplifying device according to Embodiment 1 of the present invention.
- FIG. 7 is a diagram showing a configuration of a power amplifying device according to Embodiment 2 of the present invention.
- FIG. 8 is a diagram showing a configuration of a power amplifying device according to Embodiment 3 of the present invention.
- FIG. 10 is a diagram showing a configuration of a power amplifying device according to Embodiment 4 of the present invention.
- FIG. 12 is a diagram showing a configuration of a power amplifying device according to Embodiment 5 of the present invention.
- FIG. 1 is a diagram showing a configuration of a power amplifying device according to Embodiment 1 of the present invention.
- the same reference numerals indicate the same or corresponding parts.
- a power amplifying device includes a DC power supply 10 that outputs a drain voltage Vd, a voltage conversion circuit 30 that variably outputs a voltage from the DC power supply 10, and output power.
- a voltage control circuit 50 that controls the voltage conversion circuit 30 based on the information, and a Doherty amplifier 60 that amplifies the RF input signal from the RF input terminal 1 and outputs the amplified signal from the RF output terminal 2 are provided.
- a voltage conversion circuit 30 includes a switch 31 that switches an output destination of the DC power supply 10, and a voltage converter 32 that converts the voltage of the input DC power supply 10 to a lower voltage. Is provided.
- This switch 31 converts the output voltage of the DC power supply 10 by the voltage converter 32 and outputs it to the Doherty amplifier 60, and the output voltage of the DC power supply 10. The output path to the Doherty amplifier 60 is switched as it is.
- the voltage conversion circuit 30 is controlled by the voltage control circuit 50 to output a high voltage when the output power based on the output power information is high and a low voltage when the output power is low.
- a Dono / tee amplifier 60 includes a carrier amplifier 61, a 1/4 wavelength line 62 provided on the output side of the carrier amplifier 61, and an input side of a peak amplifier described later. It consists of a quarter-wave line 63 and a peak amplifier 64.
- the output voltage of the DC power supply 10 is supplied to the carrier amplifier 61 and the peak amplifier 64 in the Doherty amplifier 60 via the voltage conversion circuit 30.
- FIG. 2 is a diagram showing a circuit configuration of the carrier amplifier of the Doherty amplifier of the power amplifying device according to Embodiment 1 of the present invention.
- a FET Field Effect Transistor
- a bipolar transistor is used for the carrier amplifier 61.
- a circuit configuration in the case of the FET is shown in FIG.
- the circuit configuration of the peak amplifier 64 is the same.
- the FET source terminal S is grounded, the RF input terminal 1 is connected to the FET gate terminal G, and this gate terminal G is biased by the gate voltage Vg.
- Drain terminal D is connected to RF output terminal 2 and applies drain voltage Vd.
- emitter terminal E is grounded
- base terminal B is connected to RF input terminal 1
- collector terminal C is connected to RF output terminal 2.
- the carrier amplifier 61 can be operated in class A (or class AB or class B), and the peak amplifier 64 can be operated in class C.
- the collector terminal C of the bipolar transistor corresponds to the drain terminal D of the FET.
- the force S described for the FET case the voltage application to the collector terminal C of the bipolar transistor can be performed in the same manner as the voltage application to the drain terminal D of FET.
- the carrier amplifier 61 and the peak amplifier 64 are bipolar transistors
- the source terminal S, the gate terminal G, and the drain terminal D of the FET are respectively connected to the emitter terminals of the bipolar transistor.
- FIG. 3 is a diagram illustrating setting of the operating point of the FET of the power amplifying device according to Embodiment 1 of the present invention.
- FIG. 4 is a graph showing the relationship between input power and output power in the case of low voltage operation and high voltage operation of the power amplifying apparatus according to Embodiment 1 of the present invention.
- FIG. 5 is a graph showing the relationship between the output power and the drain efficiency in the low voltage operation and the high voltage operation of the power amplifying device according to Embodiment 1 of the present invention.
- FIG. 6 is a graph showing the relationship between the output power and the drain efficiency when the voltage applied to the drain terminals of the carrier amplifier and the peak amplifier is switched to three or more levels.
- the RF signal input from the RF input terminal 1 is distributed into two, one input to the carrier amplifier 61 and the other input to the peak amplifier 64. Since the carrier amplifier 61 is normally biased to class A power class AB or class B, it amplifies and outputs regardless of the level of the input RF signal. Since the peak amplifier 64 is normally biased to class C, it is inactive when a small signal is active, and is active when a large signal is applied, and amplifies and outputs the signal.
- the drain voltage Vd of the carrier amplifier 61 and the peak amplifier 64 is set by the DC power supply 10 and the voltage conversion circuit 30.
- Fig. 3 is a schematic diagram showing the setting of the FET operating point.
- the gate amplifier 61 sets the gate voltage Vg so that the operating point is at point A in the figure and the peak amplifier 64 is at point C in the figure.
- the class A operating point is at a position where the drain current Id is about Ids s / 2
- the class C operating point is at a position where Id is almost zero.
- Idss represents the drain current value when the gate voltage is zero.
- the operating point that is called! /, With class AB and class B, is located between operating points A and C.
- the carrier amplifier 61 is set to point A by setting the gate voltage Vg for class A operation
- the peak amplifier 64 is set to point C by setting the gate voltage Vg for class C operation.
- output power information is input to the voltage control circuit 50, and the voltage control circuit 50 controls the voltage conversion circuit 30 based on this output power information.
- the output power information is information representing the output power of the RF signal output from the power amplification device.
- the voltage control circuit 50 instructs the switch 31 to be connected to the a side (outputs the first command).
- the voltage converter 32 is the voltage of the input DC power supply 10. Is converted to a lower voltage, and the lower voltage is applied to the drain terminal D of the carrier amplifier 61 and the peak amplifier 64 to operate at a low voltage (hereinafter referred to as “low voltage operation”).
- the voltage control circuit 50 commands to connect the switch 31 to the b side (outputs a second command).
- the voltage conversion circuit 30 applies the voltage of the DC power supply 10 to the drain terminals D of the carrier amplifier 61 and the peak amplifier 64 and operates with a high voltage (hereinafter referred to as “high voltage operation”).
- Fig. 4 shows the relationship between input power and output power in low voltage operation and high voltage operation
- Fig. 5 shows the relationship between output power and drain efficiency.
- the output power is lower in low voltage operation than in high voltage operation, but in Fig. 5, drain efficiency is higher in low voltage operation.
- the output power is less than the predetermined value, it is operated at a low voltage, and when the output power is larger than the predetermined value, it is operated at a high voltage.
- the maximum output power specification of the power amplifying apparatus is set to 34 dBm
- operation is performed with 28 dBm, which is a 16 dB value of the maximum output power, as a predetermined value.
- the output power is equal to or lower than 28 dBm, which is a predetermined value, it is operated at a low voltage by being applied to the drain terminal D of the low voltage force carrier amplifier 61 and the peak amplifier 64 obtained by conversion by the voltage converter 32.
- high drain efficiency can be obtained in a low output state.
- the voltage of the DC power supply 10 is applied to the drain terminal D of the carrier amplifier 61 and the peak amplifier 64 to operate at a high voltage, and the high output state. Therefore, high power and saturation power can be secured.
- FIGS. 4 and 5 represent the transition of the operating point from the low output state to the high output state with the output power of 28 dBm as the boundary, and conversely the high output state to the low output state.
- the movement of the operating point to is in the opposite direction of the arrow.
- the input power during high-voltage operation is shown by the arrow in the figure (D ⁇ E ) Is offset.
- the applied voltage to the drain terminal D is changed depending on whether the output power is set to a predetermined value or less and greater than the predetermined value.
- the setting of the predetermined value is a minus of the maximum output power.
- Arbitrary dB value It is determined mainly based on the specifications of the transmission power range (minimum value and maximum value) of the power amplifier.
- the power voltage converter 32 described the configuration in which the voltage converter 32 converts the output voltage of the DC power supply 10 into a low voltage.
- the power voltage converter 32 converts the output voltage of the DC power supply 10 into a high voltage.
- the configuration may be a boost type. In this case, the voltage output from the DC power supply 10 becomes a low voltage, and the voltage control circuit 50 commands the switch 31 to be connected to the b side during low voltage operation and to be connected to the a side during high voltage operation.
- the efficiency can be further improved by switching the voltage applied to the drain terminal D of the carrier amplifier 61 and the peak amplifier 64 to three or more stages (at least three drain voltages having different voltage values). For example, as shown in FIG. 6, when the output power is greater than 28 dBm and the drain application voltage is further increased, the power efficiency is further improved. In this way, the drain applied voltage can be set to three or more stages, and the power efficiency can be further increased.
- a method is adopted in which the voltage converter 32 is set to a variable output voltage type and controlled by the voltage control circuit 50, or two or more voltage converters 32 are provided and switched by the voltage control circuit 50. Can be considered.
- the voltage control circuit 50 commands the voltage to be variably output by the voltage conversion circuit 30 based on the magnitude relationship between two or more predetermined values (at least two predetermined values having different values) and the output power (at least three). Command).
- the voltage conversion circuit 30 outputs at least three drain voltages having different voltage values based on at least three commands.
- Embodiment 1 of the present invention when the output power is less than or equal to a predetermined value, the drain terminal D or the collector terminal C has a low voltage, and when the output power is greater than the predetermined value, the drain terminal D Alternatively, since a high voltage is applied to the collector terminal C, power efficiency can be improved by operating at a low voltage when the signal is small.
- FIG. 7 is a diagram showing a configuration of a power amplifying device according to Embodiment 2 of the present invention.
- the configuration of the power amplifying device according to Embodiment 2 of the present invention is a carrier amplifier.
- the drain terminal D of 61 can be applied directly from the DC power source 10 and via the voltage converter 32.
- the point power is configured so that the output voltage of the DC power supply 10 is directly applied to the drain terminal D of the peak amplifier 64.
- the other configurations and operations are the same as in the first embodiment. It is the same.
- the voltage control circuit 50 Based on the output power information, the voltage control circuit 50 connects the switch 31 to the a side and converts the output voltage of the DC power supply 10 to a low voltage by the voltage converter 32 when the output power is equal to or less than a predetermined value. And applied to the drain terminal D of the carrier amplifier 61. On the other hand, when the output power is larger than the predetermined value, the voltage control circuit 50 connects the switch 32 to the b side and applies the output voltage of the DC power supply 210 to the drain terminal D of the carrier amplifier 61.
- the output voltage of the DC power supply 10 is directly applied to the drain terminal D of the peak amplifier 64.
- the carrier amplifier 61 is operated at a low voltage, so that the current capacity required for the voltage converter 32 is smaller than the maximum consumption current of the Doherty amplifier 60. (For example, about half) can be set. As a result, the power consumption and the amount of heat generated in the voltage converter 32 can be reduced, and there is an effect that it is possible to use small and inexpensive parts.
- the carrier amplifier 61 By operating the carrier amplifier 61 at a low voltage and a high voltage, the power efficiency of the carrier amplifier 61 during low voltage operation is improved.
- the carrier amplifier 61 and the peak amplifier 64 provide a high saturation power. Can be obtained.
- the power efficiency can be further improved by switching the applied voltage to the drain terminal D of the carrier amplifier 61 in three or more steps (at least three drain voltages having different voltage values). For example, as shown in FIG. 6 in Example 1 above, when the output power is larger than 28 dBm and the drain application voltage is further increased, the power efficiency is further improved. In this way, the drain applied voltage can be set to three or more stages, and the efficiency can be further increased.
- a method in which the voltage converter 32 is set to a variable output voltage type and is controlled by the voltage control circuit 50, or a method in which two or more voltage converters 32 are provided and switching control is performed by the voltage control circuit 50 is employed. It is possible.
- the voltage control circuit 50 has two or more predetermined values (at least two predetermined values having different values) and
- the voltage conversion circuit 30 commands the voltage to be variably output based on the magnitude relationship of the output power (at least three commands).
- the voltage conversion circuit 30 outputs at least three drain voltages having different voltage values based on at least three commands.
- Embodiment 2 of the present invention when the output power is less than or equal to a predetermined value, the drain terminal D or the collector terminal C has a low voltage, and when the output power is greater than the predetermined value, the drain terminal D Alternatively, since a high voltage is applied to the collector terminal C, power efficiency can be improved by operating at a low voltage when the signal is small.
- FIG. 8 is a diagram showing the configuration of the power amplifying apparatus according to Embodiment 3 of the present invention.
- a power amplifying device includes a DC power supply 20 that outputs a gate voltage Vg, a voltage conversion circuit 40 that variably outputs a voltage from the DC power supply 20, and output power.
- a voltage control circuit 50 that controls the voltage conversion circuit 40 based on the information, and a Doherty amplifier 60 that amplifies the RF input signal from the RF input terminal 1 and outputs the amplified signal from the RF output terminal 2 are provided.
- the voltage conversion circuit 40 includes a switch 41 that switches the output destination of the DC power supply 20, and a voltage converter 42 that converts the voltage of the input DC power supply 20 to a lower voltage. Is provided.
- This switch 41 converts the output voltage of the DC power source 20 by the voltage converter 42 and outputs it to the gate terminal G of the peak amplifier 64, and the output voltage of the DC power source 20 to the gate terminal G of the peak amplifier 64 as it is. Switch the output route.
- the output voltage of the DC power supply 20 is applied to the gate terminal G of the carrier amplifier 61 and the peak amplifier 64 in the Doherty amplifier 60 via the voltage conversion circuit 40.
- the voltage conversion circuit 40 is configured so that the peak amplifier 64 is turned off when the output power based on the output power information is low, and the carrier amplifier 61 and the peak amplifier 64 are operated when the output power is high. Controlled by 50.
- Other configurations and basic operations of the Doherty amplifier 60 are the same as those in the first embodiment.
- FIG. 9 is a graph showing the gate voltage / drain current characteristics near the bias point of the peak amplifier of the power amplifying device according to Embodiment 3 of the present invention.
- output power information is input to the voltage control circuit 50, and the voltage control circuit 50 controls the voltage conversion circuit 40 based on this output power information.
- the output power information is information representing the output power of the RF signal output from the power amplification device.
- the output voltage of the DC power supply 20 is directly applied to the gate terminal G of the carrier amplifier 61.
- the voltage control circuit 50 commands the switch 42 to be connected to the c side (outputs the first command).
- the voltage converter 42 converts the input voltage of the DC power source 20 to a lower voltage and applies the voltage to the gate terminal G of the peak amplifier 64 to completely turn off the peak amplifier 64 (hereinafter referred to as “off state”). ").
- the voltage control circuit 50 commands to connect the switch 41 to the d side (outputs the first command).
- the voltage conversion circuit 40 applies the voltage of the DC power supply 20 to the gate terminal G of the peak amplifier 64, and puts the peak amplifier 64 into a normal class C bias operation state (hereinafter referred to as “class C bias operation”).
- FIG. 9 shows the relationship of the drain current to the FET gate voltage.
- the peak amplifier 64 of the Doherty amplifier 60 is biased to class C, the peak amplifier 64 is inactive in the region below the pinch-off voltage, which is a small signal.
- the class C bias has a characteristic that it begins to flow little by little near the pinch-off voltage and the drain current gradually increases as the gate voltage increases, so the peak amplifier 64 is theoretically turned off.
- the drain current is also consumed in the region. Since this current hardly contributes to output power, power is wasted.
- the peak amplifier 64 is turned off.
- the peak amplifier 64 is operated with the class C bias.
- the power consumed by the peak amplifier 64 can be reduced in the region where the peak amplifier 64 should be turned off, and the power efficiency can be improved.
- the peak amplifier 6 4 when the output power is equal to or lower than the predetermined value, the peak amplifier 6 4 is applied with a gate voltage or base voltage that is completely turned off, so that theoretically, in a region where the peak amplifier 64 should be turned off, the peak amplifier 64 is not turned off completely. The power consumed by the peak amplifier 64 can be reduced, and the power efficiency can be improved.
- FIG. 10 is a diagram showing the configuration of the power amplifying device according to Embodiment 4 of the present invention.
- a power amplifying device includes a DC power source (first DC power source) 10 that outputs a drain voltage Vd and a DC power source (second power source) that outputs a gate voltage Vg. DC power supply) 20, voltage conversion circuit (first voltage conversion circuit) 30 that variably outputs the voltage from DC power supply 10, and voltage conversion circuit (second voltage conversion) that variably outputs the voltage from DC power supply 20 Circuit) 40, voltage control circuit 50 that controls voltage conversion circuit 30 and voltage conversion circuit 40 based on output power information, and Doherty amplifier that amplifies the RF input signal from RF input terminal 1 and outputs it from RF output terminal 2 60 and are provided.
- the switch 31 converts the output voltage of the DC power supply 10 into a voltage by the voltage converter 23 and outputs the carrier amplifier 61 and the peak amplifier 64, and the output voltage of the DC power supply 10 is converted into a voltage.
- the output path of the carrier amplifier 61 and peak amplifier 64 is switched without conversion.
- the output voltage of the DC power supply 10 is applied to the drain terminal D of the carrier amplifier 61 and the peak amplifier 64 in the Doherty amplifier 60 via the voltage conversion circuit 30.
- the voltage conversion circuit 30 is controlled by the voltage control circuit 50 so as to output a low voltage when the output power based on the output power information is low and to output a high voltage when the output power is high.
- the switch 41 converts the output voltage of the DC power supply 20 by the voltage converter 42 and outputs the voltage to the gate terminal G of the peak amplifier 64, and the output voltage of the DC power supply 20
- the output path to the gate terminal G of the peak amplifier 64 is switched without voltage conversion.
- the output voltage of the DC power supply 20 is applied to the carrier amplifier 61 in the Doherty amplifier 60 and the gate terminal G of the peak amplifier 64 through the voltage conversion circuit 40. Is done.
- the voltage conversion circuit 40 controls the voltage so that the peak amplifier 64 is turned off when the output power based on the output power information is low, and the carrier amplifier 61 and the peak amplifier 64 operate when the output power is high. Controlled by circuit 50.
- Other configurations and basic operations of the Doherty amplifier 60 are the same as those in the first and third embodiments.
- FIG. 11 shows the relationship between the output power and the drain efficiency of the power amplifying device according to Embodiment 4 of the present invention.
- output power information is input to the voltage control circuit 50, and the voltage conversion circuit 30 and the voltage conversion circuit 40 are controlled based on this output power information.
- the output power information is information representing the output power of the RF signal output from the power amplification device.
- the voltage control circuit 50 commands the switch 31 to be connected to the a side (outputs the first command).
- the voltage converter 32 converts the input voltage of the DC power supply 10 into a lower voltage, applies it to the drain terminal D of the carrier amplifier 61 and the peak amplifier 64, and operates with a low voltage.
- the voltage control circuit 50 instructs the switch 41 to be connected to the c side (outputs the third command). ).
- the voltage converter 42 converts the input voltage of the DC power supply 20 to a lower voltage and applies it to the gate terminal G of the peak amplifier 64 to completely turn off the peak amplifier 64.
- the voltage control circuit 50 commands the switch 31 to be connected to the b side (outputs a second command).
- the voltage conversion circuit 30 applies the voltage of the DC power supply 10 to the drain terminals D of the carrier amplifier 61 and the peak amplifier 64 and operates with a high voltage.
- the voltage control circuit 50 commands the switch 41 to be connected to the d side (outputs a fourth command).
- the voltage conversion circuit 40 applies the voltage of the DC power source 20 to the gate terminal G of the peak amplifier 64, and puts the peak amplifier 64 into a normal class C bias operation state. Note that a DC power source is connected to the gate terminal G of the carrier amplifier 61. Twenty output voltages are applied directly.
- the predetermined value A 28 dBm, which is the maximum output power of 6 dBm
- the predetermined value B is -6 dB of the saturated power during low-voltage operation.
- Figure 11 shows an example when the value (25 dBm) is set.
- the output power is 28 dBm or less, which is the predetermined value A
- the low voltage obtained by conversion by the voltage converter 32 is applied to the drain terminal D of the carrier amplifier 61 and the peak amplifier 64, thereby reducing the voltage. It operates and can obtain high drain efficiency in a low output state.
- the power consumed by the peak amplifier 64 is reduced, so that the drain efficiency can be improved in a low output state.
- the voltage of the DC power supply 10 is applied to the drain terminals D of the carrier amplifier 61 and the peak amplifier 64, so that it operates at a high voltage and is high. High saturation power can be secured in the output state.
- the efficiency can be further improved by switching the voltage applied to the drain terminal D of the carrier amplifier 61 and the peak amplifier 64 to three or more stages (at least three drain voltages having different voltage values).
- the drain applied voltage can be set to three or more stages, further improving power efficiency.
- a method is adopted in which the voltage converter 32 is set to an output voltage variable type and controlled by the voltage control circuit 50, or two or more voltage converters 32 are provided and switching control is performed by the voltage control circuit 50. It is possible.
- the voltage control circuit 50 commands the voltage to be variably output by the voltage conversion circuit 30 based on the magnitude relationship between two or more predetermined values (at least two predetermined values having different values) and the output power. (At least three directives).
- the voltage conversion circuit 30 outputs at least three drain voltages having different voltage values based on at least three commands.
- a power amplifying device according to Embodiment 5 of the present invention will be described with reference to FIG.
- FIG. 12 is a diagram showing the configuration of the power amplifying device according to Embodiment 5 of the present invention.
- the configuration of the power amplifying device according to Embodiment 5 of the present invention is such that the drain terminal D of the carrier amplifier 61 is directly applied from the DC power supply 10 and variably applied via the voltage converter 32.
- the point power is that the output voltage of the DC power supply 10 is directly applied to the drain terminal D of the peak amplifier 64.
- other configurations and operations are the same as in Example 4 above. It is.
- the voltage control circuit 50 Based on the output power information, when the output power is equal to or less than the predetermined value A, the voltage control circuit 50 connects the switch 31 to the a side.
- the voltage conversion circuit 30 converts the output voltage of the DC power supply 10 into a low voltage by the voltage converter 32 and applies it to the drain terminal D of the carrier amplifier 61.
- the voltage control circuit 50 connects the switch 31 to the b side.
- the voltage conversion circuit 30 applies the output voltage of the DC power supply 10 to the drain terminal D of the carrier amplifier 61.
- the output voltage of the DC power supply 10 is directly applied to the drain terminal D of the peak amplifier 64.
- the carrier amplifier 61 is operated at a low voltage, so that the current capacity required for the voltage converter 32 is smaller than the maximum current consumption of the Doherty amplifier 60 ( (For example, about half). As a result, the power consumption and the amount of heat generated by the voltage converter 32 can be reduced, and there is an effect that it is possible to use small and inexpensive parts.
- the carrier amplifier 61 By operating the carrier amplifier 61 at a low voltage and a high voltage, the power efficiency of the carrier amplifier 61 during the low voltage operation is improved.
- the carrier amplifier 61 and the peak amplifier 64 provide a higher saturation power. The power S to obtain
- the efficiency can be further improved by switching the voltage applied to the drain terminal D of the carrier amplifier 61 to at least three stages (at least three drain voltages having different voltage values).
- the drain applied voltage can be set to 3 or more stages to further increase power efficiency.
- the ability to turn S For this purpose, the voltage converter 32 is set to a variable output voltage type and controlled by the voltage control circuit 50, or two or more voltage converters 32 are provided and the voltage control circuit 50 performs switching control. It is possible. That is, the voltage control circuit 50 commands the voltage to be variably output by the voltage conversion circuit 30 based on the magnitude relationship between two or more predetermined values (at least two predetermined values having different values) and the output power (at least three predetermined values). Command).
- the voltage conversion circuit 30 outputs at least three drain voltages having different voltage values based on at least three commands.
- the peak amplifier 64 when the output power is a predetermined value A or less, a low voltage is applied to the drain terminal D or the collector terminal C, and when the output power is a predetermined value B or less, the peak amplifier 64 is applied. Applies a gate voltage or base voltage to the Doherty amplifier 60 so that the peak amplifier 64 is completely turned off. In theory, in a region where the peak amplifier 64 should be turned off, the peak amplifier 64 is completely turned off. Therefore, the power consumed by the peak amplifier 64 can be reduced, and the power efficiency at the time of a small signal can be further improved by operating at a low voltage.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020097013879A KR101107888B1 (ko) | 2006-12-19 | 2007-12-05 | 전력 증폭 장치 |
EP07850128.5A EP2101409B1 (en) | 2006-12-19 | 2007-12-05 | Power amplification device |
US12/518,664 US7893770B2 (en) | 2006-12-19 | 2007-12-05 | Power amplification device |
JP2008550089A JPWO2008075561A1 (ja) | 2006-12-19 | 2007-12-05 | 電力増幅装置 |
CN2007800473304A CN101563840B (zh) | 2006-12-19 | 2007-12-05 | 电力放大装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006341476 | 2006-12-19 | ||
JP2006-341476 | 2006-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008075561A1 true WO2008075561A1 (ja) | 2008-06-26 |
Family
ID=39536194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/073504 WO2008075561A1 (ja) | 2006-12-19 | 2007-12-05 | 電力増幅装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7893770B2 (ja) |
EP (1) | EP2101409B1 (ja) |
JP (1) | JPWO2008075561A1 (ja) |
KR (1) | KR101107888B1 (ja) |
CN (1) | CN101563840B (ja) |
WO (1) | WO2008075561A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014027686A1 (en) * | 2012-08-13 | 2014-02-20 | Kabushiki Kaisha Toshiba | Power amplifier and transmitter |
WO2015029462A1 (ja) | 2013-08-28 | 2015-03-05 | 株式会社東芝 | 電力増幅装置、及び電力増幅装置の制御方法 |
JPWO2018235261A1 (ja) * | 2017-06-23 | 2019-11-07 | 三菱電機株式会社 | 高周波増幅器 |
CN112383951A (zh) * | 2020-11-16 | 2021-02-19 | 深圳国人无线通信有限公司 | 基站发射设备及其供电管理方法 |
WO2023199883A1 (ja) * | 2022-04-12 | 2023-10-19 | 株式会社村田製作所 | 電力増幅モジュール |
WO2024070736A1 (ja) * | 2022-09-28 | 2024-04-04 | 株式会社村田製作所 | 増幅回路および通信装置 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7760026B2 (en) | 2008-03-05 | 2010-07-20 | Skyworks Solutions, Inc. | Switched capacitor voltage converter for a power amplifier |
KR100905948B1 (ko) * | 2008-08-28 | 2009-07-06 | (주)카이로넷 | 도허티 증폭기 및 이를 포함하는 신호 증폭 시스템, 신호 증폭 방법 |
KR101094050B1 (ko) * | 2009-07-23 | 2011-12-19 | 성균관대학교산학협력단 | 다중 스위치를 갖는 동적 바이어스 공급장치 |
EP2806557B1 (en) * | 2013-05-23 | 2017-03-08 | Ampleon Netherlands B.V. | Doherty amplifier |
US9136804B2 (en) * | 2013-07-29 | 2015-09-15 | Freescale Semiconductor, Inc. | Switch-mode amplifier |
US9231527B2 (en) * | 2013-11-22 | 2016-01-05 | Qualcomm Incorporated | Circuits and methods for power amplification with extended high efficiency |
US9473081B2 (en) * | 2014-10-20 | 2016-10-18 | Qualcomm Incorporated | Circuits and methods for reducing supply sensitivity in a power amplifier |
WO2016131028A1 (en) * | 2015-02-15 | 2016-08-18 | Skyworks Solutions, Inc. | Doherty power amplifier having reduced size |
US10496115B2 (en) | 2017-07-03 | 2019-12-03 | Macronix International Co., Ltd. | Fast transient response voltage regulator with predictive loading |
US10860043B2 (en) | 2017-07-24 | 2020-12-08 | Macronix International Co., Ltd. | Fast transient response voltage regulator with pre-boosting |
US20190050012A1 (en) * | 2017-08-10 | 2019-02-14 | Macronix International Co., Ltd. | Voltage regulator with improved slew rate |
JP2019041277A (ja) * | 2017-08-25 | 2019-03-14 | 株式会社村田製作所 | 電力増幅回路 |
CN110048677B (zh) * | 2018-01-16 | 2023-08-08 | 中兴通讯股份有限公司 | 一种功放供电控制方法及装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001518731A (ja) * | 1997-09-30 | 2001-10-16 | モトローラ・インコーポレイテッド | 信号を増幅する装置および方法 |
JP2004096729A (ja) * | 2002-08-29 | 2004-03-25 | Hoko Koka Daigakko | ドハーティ増幅器 |
JP2004173249A (ja) * | 2002-10-28 | 2004-06-17 | Matsushita Electric Ind Co Ltd | 送信機 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3183078B2 (ja) * | 1994-02-28 | 2001-07-03 | 三菱電機株式会社 | 制御信号生成回路、これを用いた自動利得制御回路、これを用いた受信機及びこれを用いた通信システム |
US5757229A (en) * | 1996-06-28 | 1998-05-26 | Motorola, Inc. | Bias circuit for a power amplifier |
EP0846421A1 (en) * | 1996-11-06 | 1998-06-10 | Unilever N.V. | Triglyceride fat crystallization |
US6097252A (en) * | 1997-06-02 | 2000-08-01 | Motorola, Inc. | Method and apparatus for high efficiency power amplification |
KR100553252B1 (ko) * | 2002-02-01 | 2006-02-20 | 아바고테크놀로지스코리아 주식회사 | 휴대용 단말기의 전력 증폭 장치 |
JP2006500884A (ja) * | 2002-09-20 | 2006-01-05 | トライクウィント セミコンダクター,インコーポレーテッド | 切換可能な可変出力電力レベルを有する飽和電力増幅器 |
EP1557955A1 (en) * | 2002-10-28 | 2005-07-27 | Matsushita Electric Industrial Co., Ltd. | Transmitter |
KR100480496B1 (ko) | 2002-11-18 | 2005-04-07 | 학교법인 포항공과대학교 | 도허티 증폭기를 이용한 신호 증폭 장치 |
KR20040079597A (ko) * | 2003-03-08 | 2004-09-16 | 학교법인 포항공과대학교 | 적응 바이어스 제어 기술을 이용한 초고주파 도허티증폭장치 |
US6922102B2 (en) * | 2003-03-28 | 2005-07-26 | Andrew Corporation | High efficiency amplifier |
US7385445B2 (en) * | 2005-07-21 | 2008-06-10 | Triquint Semiconductor, Inc. | High efficiency amplifier circuits having bypass paths |
TWI346449B (en) * | 2007-08-16 | 2011-08-01 | Ind Tech Res Inst | Power amplifier circuit for multi-frequencies and multi-modes and method for operating the same |
-
2007
- 2007-12-05 CN CN2007800473304A patent/CN101563840B/zh not_active Expired - Fee Related
- 2007-12-05 US US12/518,664 patent/US7893770B2/en active Active
- 2007-12-05 JP JP2008550089A patent/JPWO2008075561A1/ja active Pending
- 2007-12-05 WO PCT/JP2007/073504 patent/WO2008075561A1/ja active Application Filing
- 2007-12-05 KR KR1020097013879A patent/KR101107888B1/ko not_active IP Right Cessation
- 2007-12-05 EP EP07850128.5A patent/EP2101409B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001518731A (ja) * | 1997-09-30 | 2001-10-16 | モトローラ・インコーポレイテッド | 信号を増幅する装置および方法 |
JP2004096729A (ja) * | 2002-08-29 | 2004-03-25 | Hoko Koka Daigakko | ドハーティ増幅器 |
JP2004173249A (ja) * | 2002-10-28 | 2004-06-17 | Matsushita Electric Ind Co Ltd | 送信機 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2101409A4 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014027686A1 (en) * | 2012-08-13 | 2014-02-20 | Kabushiki Kaisha Toshiba | Power amplifier and transmitter |
JP2014039109A (ja) * | 2012-08-13 | 2014-02-27 | Toshiba Corp | 電力増幅器および送信器 |
US9124216B2 (en) | 2012-08-13 | 2015-09-01 | Kabushiki Kaisha Toshiba | Power amplifier and transmitter |
WO2015029462A1 (ja) | 2013-08-28 | 2015-03-05 | 株式会社東芝 | 電力増幅装置、及び電力増幅装置の制御方法 |
JPWO2018235261A1 (ja) * | 2017-06-23 | 2019-11-07 | 三菱電機株式会社 | 高周波増幅器 |
CN112383951A (zh) * | 2020-11-16 | 2021-02-19 | 深圳国人无线通信有限公司 | 基站发射设备及其供电管理方法 |
WO2023199883A1 (ja) * | 2022-04-12 | 2023-10-19 | 株式会社村田製作所 | 電力増幅モジュール |
WO2024070736A1 (ja) * | 2022-09-28 | 2024-04-04 | 株式会社村田製作所 | 増幅回路および通信装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2101409A4 (en) | 2012-11-28 |
CN101563840A (zh) | 2009-10-21 |
EP2101409B1 (en) | 2021-01-20 |
KR20090086626A (ko) | 2009-08-13 |
US7893770B2 (en) | 2011-02-22 |
JPWO2008075561A1 (ja) | 2010-04-08 |
CN101563840B (zh) | 2012-06-06 |
EP2101409A1 (en) | 2009-09-16 |
US20100079210A1 (en) | 2010-04-01 |
KR101107888B1 (ko) | 2012-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2008075561A1 (ja) | 電力増幅装置 | |
CN100456632C (zh) | 多赫蒂放大器 | |
US8604881B2 (en) | Efficiency improvement of doherty power amplifier using supply switching and digitally controlled gate bias modulation of peaking amplifier | |
JP3841416B2 (ja) | 送信装置、送信出力制御方法、および無線通信装置 | |
JP4836253B2 (ja) | 電力増幅装置および携帯電話端末 | |
US20080122542A1 (en) | Enhanced amplifier with auxiliary path bias modulation | |
CN101179257B (zh) | 改进了尺寸和成本的高频功率放大器 | |
KR100880448B1 (ko) | 저소비전력 혼합모드 전력증폭장치 | |
JP2010021719A (ja) | ドハティ増幅器 | |
KR20130055843A (ko) | 전력 증폭기 및 그 증폭 방법 | |
WO2018023215A1 (zh) | 包络调制器、包络跟踪功率放大器及通信设备 | |
EP2704317A1 (en) | Power amplifier device and power amplifier circuit | |
US8773206B2 (en) | Power amplifier apparatus and power amplifier circuit | |
WO2013153894A1 (ja) | カスコード増幅器及び増幅回路 | |
Hiura et al. | High-efficiency 400 W power amplifier with dynamic drain voltage control for 6 MHz OFDM signal | |
US7554392B2 (en) | Multiple output power mode amplifier | |
TWI572134B (zh) | 放大模組的功率控制方法 | |
JP3827130B2 (ja) | フィードフォワード増幅器 | |
Wood et al. | A high power, high efficiency UMTS amplifier using a novel Doherty configuration | |
US8031028B2 (en) | Polar signal processor to drive a segmented power amplifier and method therefore | |
JP2004289492A (ja) | ドハーティ増幅器 | |
JP7292529B1 (ja) | ドハティ増幅器 | |
CN214281334U (zh) | 一种功率放大器的控制装置 | |
JPH06177681A (ja) | 高周波増幅装置 | |
KR20160027888A (ko) | 병렬 출력단 선형 증폭기 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780047330.4 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07850128 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008550089 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12518664 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007850128 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020097013879 Country of ref document: KR |