WO2022215200A1 - ドハティ増幅器 - Google Patents
ドハティ増幅器 Download PDFInfo
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- WO2022215200A1 WO2022215200A1 PCT/JP2021/014793 JP2021014793W WO2022215200A1 WO 2022215200 A1 WO2022215200 A1 WO 2022215200A1 JP 2021014793 W JP2021014793 W JP 2021014793W WO 2022215200 A1 WO2022215200 A1 WO 2022215200A1
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- 230000000694 effects Effects 0.000 description 7
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 4
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- 238000004891 communication Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/64—Impedance arrangements
- H01L23/66—High-frequency adaptations
-
- 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
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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
-
- 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
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/60—Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
- H03F3/602—Combinations of several amplifiers
- H03F3/604—Combinations of several amplifiers using FET's
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
- H01L2223/58—Structural electrical arrangements for semiconductor devices not otherwise provided for
- H01L2223/64—Impedance arrangements
- H01L2223/66—High-frequency adaptations
- H01L2223/6605—High-frequency electrical connections
- H01L2223/6611—Wire connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
- H01L2223/58—Structural electrical arrangements for semiconductor devices not otherwise provided for
- H01L2223/64—Impedance arrangements
- H01L2223/66—High-frequency adaptations
- H01L2223/6644—Packaging aspects of high-frequency amplifiers
- H01L2223/6655—Matching arrangements, e.g. arrangement of inductive and capacitive components
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/222—A circuit being added at the input of an amplifier to adapt the input impedance of the amplifier
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
Definitions
- the present disclosure relates to Doherty amplifiers.
- Patent Document 1 discloses a Doherty amplifier.
- This Doherty amplifier has a distributor that divides an input signal into two signals, a carrier amplifier that consists of a first FET (Field Effect Transistor) to which one of the two signals is input, and a carrier amplifier to which the other of the two signals is input. , and a peak amplifier composed of a second FET.
- the Doherty amplifier also includes a combiner that adjusts impedances of outputs of the carrier amplifier and the peak amplifier and combines output signals of the carrier amplifier and the peak amplifier.
- Patent Document 1 a carrier amplifier and a peak amplifier are arranged side by side in close proximity. Therefore, the signals of the carrier amplifier and the peak amplifier may interfere with each other.
- An object of the present disclosure is to obtain a Doherty amplifier capable of suppressing signal interference.
- the Doherty amplifier includes an input terminal, an output terminal, a carrier amplifier connected between the input terminal and the output terminal, and the carrier amplifier and the carrier amplifier connected between the input terminal and the output terminal.
- a peak amplifier connected in parallel, a first input matching circuit connected between the input terminal and the carrier amplifier, and a second input matching circuit connected between the input terminal and the peak amplifier. , wherein the carrier amplifier and the peaking amplifier output signals outward in opposite directions.
- the carrier amplifier and the peak amplifier output signals in opposite directions. Therefore, signal interference can be suppressed.
- FIG. 1 is a plan view of the Doherty amplifier according to Embodiment 1;
- FIG. FIG. 4 is a plan view of a Doherty amplifier according to a comparative example;
- FIG. 8 is a plan view of a Doherty amplifier according to Embodiment 2;
- FIG. 11 is a plan view of a Doherty amplifier according to Embodiment 3;
- FIG. 11 is a plan view of a Doherty amplifier according to Embodiment 4;
- FIG. 11 is a plan view of a Doherty amplifier according to Embodiment 5;
- FIG. 12 is a plan view of a Doherty amplifier according to Embodiment 6;
- FIG. 1 is a plan view of Doherty amplifier 100 according to the first embodiment.
- the Doherty amplifier 100 includes an input terminal 10, an output terminal 40, a carrier amplifier 20 connected between the input terminal 10 and the output terminal 40, and a carrier amplifier 20 connected in parallel between the input terminal 10 and the output terminal 40. and a peaking amplifier 30 connected to the .
- Carrier amplifier 20 is also called a main amplifier.
- Peak amplifier 30 is also called an auxiliary amplifier.
- Carrier amplifier 20 is a transistor that amplifies a signal in a low output region to a high output region.
- Peak amplifier 30 is a transistor that amplifies signals in the high power region.
- the distributor 16 distributes the input signal from the input terminal 10 to the first input line 11 and the second input line 12 .
- a two-input terminal may be used as the input terminal 10 without providing the distributor 16 .
- a first pre-amplifier 13 is provided on the first input line 11 .
- a second preamplifier 14 is provided on the second input line 12 .
- An input side ⁇ /4 electrical length line 15 is provided on the output side of the second pre-amplifier 14 on the second input line 12 .
- the input-side ⁇ /4 electrical length line 15 has an electrical length that is an odd multiple of ⁇ /4 of the input signal. That is, the electrical length of the input side ⁇ /4 electrical length line 15 is ⁇ /4, 3 ⁇ /4, 5 ⁇ /4, .
- a first input matching circuit 22 is connected to the end of the first input line 11 opposite to the input terminal 10 .
- a carrier amplifier 20 is connected to the output of the first input matching circuit 22 .
- a first input matching circuit 22 is connected between the input terminal 10 and the carrier amplifier 20 .
- a second input matching circuit 32 is connected to the end of the second input line 12 opposite to the input terminal 10 .
- a peak amplifier 30 is connected to the output of the second input matching circuit 32 .
- a second input matching circuit 32 is connected between the input terminal 10 and the peaking amplifier 30 .
- a first output line 41 is connected to the output of the carrier amplifier 20 .
- an output-side ⁇ /4 electrical length line 45 for synthesizing the output signals of the carrier amplifier 20 and the peak amplifier 30 is provided on the first output line 41 .
- the output-side ⁇ /4 electrical length line 45 has an electrical length that is an odd multiple of ⁇ /4 of the amplified signal. That is, the electrical length of the output side ⁇ /4 electrical length line 45 is ⁇ /4, 3 ⁇ /4, 5 ⁇ /4, .
- the output side ⁇ /4 electrical length line 45 has an electrical length corresponding to the phase difference of the input side ⁇ /4 electrical length line 15 .
- a second output line 42 is connected to the output of the peaking amplifier 30 .
- the signals from the first output line 41 and the second output line 42 are combined by the combiner 46 and output from the output terminal 40 .
- a signal input from the input terminal 10 is amplified by the first pre-amplifier 13 and the second pre-amplifier 14, respectively.
- a signal amplified by the first pre-amplifier 13 is input to the first input matching circuit 22 .
- the signal amplified by the second pre-amplifier 14 is input to the second input matching circuit 32 via the ⁇ /4 electrical long line 15 on the input side.
- the first input matching circuit 22 and the second input matching circuit 32 perform impedance matching so that input loss does not occur in the carrier amplifier 20 and the peak amplifier 30, respectively.
- Input loss means signal reflection.
- the carrier amplifier 20 and the peak amplifier 30 amplify and output the signals input from the first input matching circuit 22 and the second input matching circuit 32, respectively.
- the carrier amplifier 20 and the peak amplifier 30 output signals outward in opposite directions.
- the angle between the signal output directions 61 and 62 of the carrier amplifier 20 and the peak amplifier 30 is 180 degrees.
- Carrier amplifier 20 outputs a signal to the opposite side of peak amplifier 30
- peak amplifier 30 outputs a signal to the opposite side of carrier amplifier 20 .
- the signals output from the carrier amplifier 20 and the peak amplifier 30 are combined by the combiner 46 through the first output line 41 and the second output line 42 and output from the output terminal 40 .
- the carrier amplifier 20, the peak amplifier 30, the first preamplifier 13, the second preamplifier 14, the first input matching circuit 22, and the second input matching circuit 32 are composed of semiconductor chips such as GaAs and GaN.
- amplifiers can be made more efficient by operating in the saturation region, which is a region of high output power.
- a serial multistage amplifier becomes more efficient as it approaches the saturation region, so it has a weak point at low to medium output.
- the Doherty amplifier has two amplifiers with different operating regions. The two amplifiers in the Doherty amplifier, the carrier amplifier and the peaking amplifier, are in different classes of operation. As a result, the Doherty amplifier can achieve higher efficiency than a general serial multistage amplifier in the entire output power range from low to high output.
- communication devices are required to be multi-MIMO (Multiple-Input Multiple-Output) such as 64T64R.
- MIMO Multiple-Input Multiple-Output
- 64T64R Multiple-Input Multiple-Output
- a large number of power amplifiers are installed in one small antenna. Therefore, in addition to improving the efficiency of the power amplifier for suppressing heat generation, it is required to improve high-temperature operation characteristics, reduce the size, and reduce the cost.
- FIG. 2 is a plan view of the Doherty amplifier 101 according to the comparative example.
- the carrier amplifier 20 and the peak amplifier 30 are arranged side by side so as to suppress distortion characteristic deterioration of the amplified signal.
- the signal output directions of the carrier amplifier 20 and the peak amplifier 30 are the same.
- the layout area increases in one direction, and there is a risk that the size of the device will increase.
- the carrier amplifier and the peak amplifier generate the largest amount of heat.
- carrier amplifier 20 and peaking amplifier 30 are adjacent. For this reason, there is a possibility that characteristic deterioration may occur during high-temperature operation.
- the carrier amplifier 20 and the peak amplifier 30 are arranged side by side close to each other, signals may interfere with each other.
- the peak amplifier 30 and the second input matching circuit it is preferable to ensure layout symmetry of circuit 32 .
- the center lines 71 of the carrier amplifier 20 and the first input matching circuit 22 are aligned to maintain layout symmetry.
- the centerlines 72 of the peak amplifier 30 and the second input matching circuit 32 are aligned to maintain layout symmetry.
- an empty space is generated particularly between the first input matching circuit 22 and the second input matching circuit 32 by arranging the carrier amplifier 20 and the peak amplifier 30 side by side. Therefore, miniaturization of the device is hindered.
- communication devices will be required to have higher output power in order to expand the support area. Therefore, it is assumed that the total gate width Wgt of carrier amplifier 20 and peak amplifier 30 will be larger. This may further increase the empty space between the first input matching circuit 22 and the second input matching circuit 32 .
- the carrier amplifier 20 and the peak amplifier 30 output signals outward in opposite directions.
- Carrier amplifier 20 and peaking amplifier 30 are aligned in signal output direction 61 in which carrier amplifier 20 outputs a signal.
- the long sides of the carrier amplifier 20 and the long sides of the peak amplifier 30 do not line up in one direction, so the layout can be reduced. That is, the width W shown in FIG. 1 can be reduced.
- the layout reduction effect increases.
- the first input matching circuit 22 and the second input matching circuit 32 are arranged between the carrier amplifier 20 and the peak amplifier 30 . Therefore, it is possible to secure a space between the carrier amplifier 20 and the peak amplifier 30, which are heat sources, and to disperse the heat generating portions. Therefore, characteristic deterioration during high-temperature operation can be suppressed. Also, the space between the carrier amplifier 20 and the peak amplifier 30 can be effectively utilized.
- the center line 70 of the carrier amplifier 20 and the center line of the first input matching circuit 22 match, and the center line 70 of the peak amplifier 30 and the center line of the second input matching circuit 32 match. Also, the center lines 70 of the carrier amplifier 20 and the peak amplifier 30 are aligned. As described above, in this embodiment, the layout can be miniaturized while ensuring the symmetry of the layout, which is a prerequisite for good distortion characteristics.
- the carrier amplifier 20 and the peak amplifier 30 output signals in opposite directions, the signal output directions 61 and 62 of the carrier amplifier 20 and the peak amplifier 30 do not run in parallel. Therefore, interference of high frequency signals can be suppressed.
- a configuration in which the carrier amplifier 20 and the peak amplifier 30 output signals inward, that is, toward each other can be considered.
- a space is required for arranging the output side ⁇ /4 electrical long line 45 in the region sandwiched between the carrier amplifier 20 and the peak amplifier 30. It is assumed that Therefore, it may be difficult to miniaturize the layout.
- the output side ⁇ /4 electrical length line 45 is generally small.
- the output side ⁇ /4 electrical length line 45 is generally large.
- the layout may become large. Therefore, there is a risk that the Doherty amplifier, which amplifies low frequency signals such as those in the 4 GHz band, is hindered from being miniaturized.
- the carrier amplifier 20 and the peak amplifier 30 of the present embodiment output signals outward in opposite directions. Therefore, the output-side ⁇ /4 electrical length line 45 is provided outside the region sandwiched between the carrier amplifier 20 and the peak amplifier 30 . Therefore, it is possible to reduce the size of the layout.
- the input side has a small signal and is less susceptible to signal loss. Therefore, the input side ⁇ /4 electrical length line 15 has a smaller line width than the output side ⁇ /4 electrical length line 45 . Therefore, the input side ⁇ /4 electrical long line 15 is less likely to hinder miniaturization.
- the input side ⁇ /4 electrical long line 15 may be configured with a low signal loss ⁇ /4 electrical long line like the output side ⁇ /4 electrical long line 45, or may be configured with an SMD (surface mount device). can be A ⁇ /4 electrical length line made of SMDs has some signal loss, but can be further miniaturized.
- the input side ⁇ /4 electrical long line 15 is provided on the peak amplifier 30 side, and the output side ⁇ /4 electrical long line 45 is provided on the carrier amplifier 20 side.
- the output side ⁇ /4 electrical length line 45 may be connected between one of the carrier amplifier 20 and the peak amplifier 30 and the output terminal 40 .
- the input side ⁇ /4 electrical long line 15 is connected to the one of the first input matching circuit 22 and the second input matching circuit 32 to which the output side ⁇ /4 electrical long line 45 is not connected to the output side, and the input terminal. 10.
- the arrangement of parts shown in FIG. 1 is an example and is not limited.
- the centerlines 70 of carrier amplifier 20 and peak amplifier 30 need not coincide.
- FIG. 3 is a plan view of Doherty amplifier 200 according to the second embodiment.
- This embodiment differs from the first embodiment in that the first input matching circuit 22 and the second input matching circuit 32 are formed on one chip 222 .
- Other configurations are the same as those of the first embodiment.
- the chip 222 is, for example, a semiconductor chip such as GaAs or GaN.
- the size of the input matching circuit can be reduced. Also, the four chips of the carrier amplifier 20, the peak amplifier 30, the first input matching circuit 22, and the second input matching circuit 32 in the first embodiment can be reduced to three chips in the present embodiment. Therefore, the number of mounting times, mounting time and cost can be reduced in the mounting process.
- FIG. 4 is a plan view of Doherty amplifier 300 according to the third embodiment.
- the first pre-amplifier 13 is connected between the first input matching circuit 22 and the input terminal 10
- the second pre-amplifier 14 is connected between the second input matching circuit 32 and the input terminal 10. is connected.
- the first pre-amplifier 13 and the second pre-amplifier 14 are formed on one chip 313 .
- the chip 313 is, for example, a semiconductor chip such as GaAs or GaN.
- the size of the front-stage amplifier can be reduced.
- the five chips of the carrier amplifier 20, the peak amplifier 30, the chip 222, the first preamplifier 13 and the second preamplifier 14 in the second embodiment can be reduced to four chips in the present embodiment. Therefore, the number of mounting times, mounting time and cost can be reduced in the mounting process.
- FIG. 5 is a plan view of Doherty amplifier 400 according to the fourth embodiment.
- the first input matching circuit 22 and the second input matching circuit 32 are formed in one IPD (Integrated Passive Device) 422 .
- IPD Integrated Passive Device
- Other configurations are the same as those of the second embodiment.
- the IPD 422 enables further miniaturization.
- IPD 422 is also referred to as an integrated passive device, integrated passive component, or embedded passive component.
- IPD 422 is an electronic component in which resistors, capacitors, inductors, microstriplines, impedance matching elements, baluns or combinations thereof are integrated in the same package or on the same substrate.
- FIG. 6 is a plan view of Doherty amplifier 500 according to the fifth embodiment.
- carrier amplifier 20 and first pre-amplifier 13 are formed on one chip 520
- peak amplifier 30 and second pre-amplifier 14 are formed on one chip 530.
- the input side ⁇ /4 electrical length line 15 is connected between the input terminal 10 and the second pre-amplifier 14 .
- Other configurations are the same as those of the second embodiment.
- the front-stage amplifier and the rear-stage amplifier are formed on one chip, thereby enabling further miniaturization. Further, in contrast to the five-chip configuration of the second embodiment, the present embodiment has a three-chip configuration, which can reduce the number of times of mounting, the mounting time, and the cost.
- the center line 70 of the portion of the chip 520 where the carrier amplifier 20 is formed and the center line 70 of the portion of the chip 222 where the first input matching circuit 22 is formed coincide.
- the center line 70 of the portion of the chip 530 where the peak amplifier 30 is formed and the center line 70 of the portion of the chip 222 where the second input matching circuit 32 is formed coincide.
- the center line 70 of the portion of the chip 520 where the carrier amplifier 20 is formed and the center line 70 of the portion of the chip 530 where the peak amplifier 30 is formed coincide.
- only one of the carrier amplifier 20 and the first pre-amplifier 13 or the peak amplifier 30 and the second pre-amplifier 14 may be formed on one chip.
- the chip 222 of this embodiment may be an IPD.
- FIG. 7 is a plan view of Doherty amplifier 600 according to the sixth embodiment.
- carrier amplifier 20 and second preamplifier 14 are formed on one chip 620
- peak amplifier 30 and first preamplifier 13 are formed on one chip 630 .
- the input side ⁇ /4 electrical length line 15 is connected between the input terminal 10 and the second pre-amplifier 14 .
- Other configurations are the same as those of the second embodiment.
- the front-stage amplifier and the rear-stage amplifier are formed on one chip, thereby enabling further miniaturization. Further, in contrast to the five-chip configuration of the second embodiment, the present embodiment has a three-chip configuration, which can reduce the number of times of mounting, the mounting time, and the cost.
- the center line 71 of the portion of the chip 620 where the carrier amplifier 20 is formed and the center line 71 of the portion of the chip 222 where the first input matching circuit 22 is formed coincide.
- the center line 72 of the portion of the chip 630 where the peak amplifier 30 is formed and the center line 72 of the portion of the chip 222 where the second input matching circuit 32 is formed coincide.
- only one of the carrier amplifier 20 and the second pre-amplifier 14 or the peak amplifier 30 and the first pre-amplifier 13 may be formed on one chip.
- the chip 222 of this embodiment may be an IPD.
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Abstract
Description
図1は、実施の形態1に係るドハティ増幅器100の平面図である。ドハティ増幅器100は、入力端子10と、出力端子40と、入力端子10と出力端子40との間に接続されたキャリア増幅器20と、入力端子10と出力端子40との間でキャリア増幅器20と並列に接続されたピーク増幅器30を備える。キャリア増幅器20はメインアンプとも呼ばれる。ピーク増幅器30は補助アンプとも呼ばれる。キャリア増幅器20は、低出力領域から高出力領域で信号を増幅するトランジスタである。ピーク増幅器30は、高出力領域で信号を増幅するトランジスタである。
図3は、実施の形態2に係るドハティ増幅器200の平面図である。本実施の形態では、第1入力整合回路22と第2入力整合回路32が、1つのチップ222に形成される点が実施の形態1と異なる。他の構成は実施の形態1の構成と同様である。チップ222は、例えばGaAs、GaNなどの半導体チップである。
図4は、実施の形態3に係るドハティ増幅器300の平面図である。実施の形態1において、第1入力整合回路22と入力端子10との間には第1前段増幅器13が接続され、第2入力整合回路32と入力端子10との間には第2前段増幅器14が接続される。本実施の形態では、第1前段増幅器13と第2前段増幅器14が1つのチップ313に形成される。他の構成は実施の形態2の構成と同様である。チップ313は、例えばGaAs、GaNなどの半導体チップである。
図5は、実施の形態4に係るドハティ増幅器400の平面図である。本実施の形態では、第1入力整合回路22と第2入力整合回路32は、1つのIPD(集積型パッシブデバイス)422に形成される。他の構成は実施の形態2の構成と同様である。
図6は、実施の形態5に係るドハティ増幅器500の平面図である。本実施の形態ではキャリア増幅器20と第1前段増幅器13は1つのチップ520に形成され、ピーク増幅器30と第2前段増幅器14は1つのチップ530に形成される。また、入力側λ/4電気長線路15は入力端子10と第2前段増幅器14との間に接続される。他の構成は実施の形態2の構成と同様である。
図7は、実施の形態6に係るドハティ増幅器600の平面図である。本実施の形態では、キャリア増幅器20と第2前段増幅器14は1つのチップ620に形成され、ピーク増幅器30と第1前段増幅器13は1つのチップ630に形成される。また、入力側λ/4電気長線路15は入力端子10と第2前段増幅器14との間に接続される。他の構成は実施の形態2の構成と同様である。
Claims (10)
- 入力端子と、
出力端子と、
前記入力端子と前記出力端子との間に接続されたキャリア増幅器と、
前記入力端子と前記出力端子との間で、前記キャリア増幅器と並列に接続されたピーク増幅器と、
前記入力端子と前記キャリア増幅器との間に接続された第1入力整合回路と、
前記入力端子と前記ピーク増幅器との間に接続された第2入力整合回路と、
を備え、
前記キャリア増幅器と前記ピーク増幅器は、外側に向かって互いに反対方向に信号を出力することを特徴とするドハティ増幅器。 - 前記キャリア増幅器と前記ピーク増幅器は、前記キャリア増幅器が信号を出力する方向に並ぶことを特徴とする請求項1に記載のドハティ増幅器。
- 前記第1入力整合回路と前記第2入力整合回路は、前記キャリア増幅器と前記ピーク増幅器の間に配置されることを特徴とする請求項1または2に記載のドハティ増幅器。
- 前記キャリア増幅器の中心線と前記第1入力整合回路の中心線は一致し、
前記ピーク増幅器の中心線と前記第2入力整合回路の中心線は一致することを特徴とする請求項1から3の何れか1項に記載のドハティ増幅器。 - 前記キャリア増幅器と前記ピーク増幅器の一方と、前記出力端子との間に接続された出力側λ/4電気長線路と、
前記第1入力整合回路と前記第2入力整合回路のうち出力側に前記出力側λ/4電気長線路が接続されていない方と、前記入力端子との間に接続された入力側λ/4電気長線路と、
を備え、
前記出力側λ/4電気長線路は、前記キャリア増幅器と前記ピーク増幅器に挟まれた領域の外側に設けられることを特徴とする請求項1から4の何れか1項に記載のドハティ増幅器。 - 前記第1入力整合回路と前記第2入力整合回路は、1つのチップに形成されることを特徴とする請求項1から5の何れか1項に記載のドハティ増幅器。
- 前記第1入力整合回路と前記第2入力整合回路は、1つの集積型パッシブデバイスに形成されることを特徴とする請求項6に記載のドハティ増幅器。
- 前記第1入力整合回路と前記入力端子との間に接続された第1前段増幅器と、
前記第2入力整合回路と前記入力端子との間に接続された第2前段増幅器と、
を備え、
前記第1前段増幅器と前記第2前段増幅器は、1つのチップに形成されることを特徴とする請求項1から7の何れか1項に記載のドハティ増幅器。 - 前記第1入力整合回路と前記入力端子との間に接続された第1前段増幅器と、
前記第2入力整合回路と前記入力端子との間に接続された第2前段増幅器と、
を備え、
前記キャリア増幅器と前記第1前段増幅器は1つのチップに形成され、
前記ピーク増幅器と前記第2前段増幅器は1つのチップに形成されることを特徴とする請求項1から7の何れか1項に記載のドハティ増幅器。 - 前記第1入力整合回路と前記入力端子との間に接続された第1前段増幅器と、
前記第2入力整合回路と前記入力端子との間に接続された第2前段増幅器と、
を備え、
前記キャリア増幅器と前記第2前段増幅器は1つのチップに形成され、
前記ピーク増幅器と前記第1前段増幅器は1つのチップに形成されることを特徴とする請求項1から7の何れか1項に記載のドハティ増幅器。
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US18/250,473 US20230411316A1 (en) | 2021-04-07 | 2021-04-07 | Doherty amplifier |
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JP2012114711A (ja) * | 2010-11-25 | 2012-06-14 | Mitsubishi Electric Corp | 増幅器及び通信装置 |
WO2017145258A1 (ja) * | 2016-02-23 | 2017-08-31 | 三菱電機株式会社 | 負荷変調増幅器 |
US20180013391A1 (en) * | 2016-05-17 | 2018-01-11 | Nxp Usa, Inc. | Multiple-path rf amplifiers with angularly offset signal path directions, and methods of manufacture thereof |
US20200186097A1 (en) * | 2018-12-05 | 2020-06-11 | Nxp Usa, Inc. | Integrally-formed multiple-path power amplifier with on-die combining node structure |
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JP2012114711A (ja) * | 2010-11-25 | 2012-06-14 | Mitsubishi Electric Corp | 増幅器及び通信装置 |
WO2017145258A1 (ja) * | 2016-02-23 | 2017-08-31 | 三菱電機株式会社 | 負荷変調増幅器 |
US20180013391A1 (en) * | 2016-05-17 | 2018-01-11 | Nxp Usa, Inc. | Multiple-path rf amplifiers with angularly offset signal path directions, and methods of manufacture thereof |
US20200186097A1 (en) * | 2018-12-05 | 2020-06-11 | Nxp Usa, Inc. | Integrally-formed multiple-path power amplifier with on-die combining node structure |
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US20230411316A1 (en) | 2023-12-21 |
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