WO2002031968A1 - High-frequency amplifier - Google Patents
High-frequency amplifier Download PDFInfo
- Publication number
- WO2002031968A1 WO2002031968A1 PCT/JP2000/007085 JP0007085W WO0231968A1 WO 2002031968 A1 WO2002031968 A1 WO 2002031968A1 JP 0007085 W JP0007085 W JP 0007085W WO 0231968 A1 WO0231968 A1 WO 0231968A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- current
- bipolar transistor
- voltage
- base
- npn bipolar
- Prior art date
Links
- 238000010586 diagram Methods 0.000 description 6
- 238000013459 approach Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 101100272276 Schizosaccharomyces pombe (strain 972 / ATCC 24843) bdc1 gene Proteins 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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
- H03F1/0261—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 polarisation voltage or current, e.g. gliding Class A
-
- 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
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
- H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
- H03F2201/3215—To increase the output power or efficiency
Definitions
- the present invention relates to a high-frequency amplifier used for satellite communication, terrestrial microwave communication, mobile communication, and the like.
- a constant voltage bias circuit that applies a base voltage at a constant voltage is used to obtain high output and high efficiency.
- a base bias is applied at a constant current, if a rectified current occurs when the high-frequency input power increases, the pace voltage drops to maintain the constant current. For this reason, when the input power increases, the saturation power decreases due to the rapid approach to class II operation, and high output and high efficiency cannot be obtained.
- the pace voltage does not drop, so that the bias class does not change, and a larger saturation output power and higher efficiency are obtained as compared with the case of the constant current bias. Can be. Therefore, a constant voltage bias circuit is required so that the base voltage does not decrease even if the base current increases due to an increase in the input power.
- Figure 1 shows, for example, “Introduction to Functional Circuit Design of Analog ICs, IC Simulation Method Using Circuit Simulator SPIC II” (Hidehiko Aoki, CQ Publishing Company, published September 20, 1992, ⁇ 74 2) is a circuit diagram showing a high-frequency amplifying device when one circuit of the base current compensation current mirror shown in 2) is used for a constant voltage bias circuit.
- 1 is a high-frequency amplifier using an NPN bipolar transistor such as a BJT or HBT as an amplifying element
- 2 is a constant voltage bias circuit for supplying the high-frequency amplifier 1 with a spice voltage.
- 3 is an NPN bipolar transistor such as a BJT or HBT
- 4 is a ground connected to the emitter terminal of the NPN bipolar transistor 3
- 5 is a high-frequency signal input terminal
- 6 is a high-frequency signal output terminal.
- 7 is a base bias terminal
- 8 is a collector bias terminal.
- reference numeral 11 denotes an NPN bipolar transistor such as a BJT or HBT which constitutes a current mirror together with the NPN bipolar transistor 3 of the high-frequency amplifier 1, and its base terminal is a base spiral. It is connected to terminal 7, and its emitter terminal is connected to ground 4.
- Reference numeral 1 denotes a bipolar transistor such as a BJT or HBT for base current compensation, the base terminal of which is connected to the collector terminal of the bipolar transistor 11 and the emitter terminal thereof is connected to the bipolar transistor. It is connected to the base terminal of bipolar transistor 11.
- 13 is a resistor connected between the collector terminal of bipolar transistor 12 and the power supply and voltage setting terminal 15.14 is a resistor connected between the base terminal of bipolar transistor 12 and the power supply terminal. This is a resistor connected between the voltage setting terminals 15 and 15.
- the high-frequency signal Pin is input from the high-frequency signal input terminal 5 to the high-frequency amplifier 1, amplified by the high-frequency amplifier 1, and then output from the high-frequency signal output terminal 6.
- the base voltage Vb and the pace current I brf of the high frequency amplifier 1 are supplied from the constant voltage bias circuit 2, and the collector current I crf and the collector voltage V c of the high frequency amplifier 1 are supplied from the collector bias terminal 8.
- base voltage Vb and base current Ibrf are determined as follows.
- the size of the NPN bipolar transistor 11 constituting the current mirror together with the high-frequency amplifier 1 is 1
- the size of the NPN bipolar transistor 3 of the high-frequency amplifier 1 is N
- the size of the NPN bipolar transistor 3 is N.
- M be the size of the NPN bipolar transistor 12. Further, it is assumed that these three NPN bipolar transistors 3, 11, 12 have the same structure, and the current amplification factor is?. Further, a contact voltage V ref, a current I ref, I cdcl, I bdcl, ledc 2, I edc 2 I bdc 2, I brf, I crf, and a resistance R ref are defined as shown in FIG.
- the collector current I crf of the N PN bipolar transistor of the high-frequency amplifier 1 is
- V b (Vp c-I r e fR r e f) / 2
- the base voltage Vb and the pace current Ib are supplied as the outputs of the constant voltage bias circuit 2.
- the conventional high-frequency amplifier is configured as described above, As shown, when the high-frequency input signal Pin is increased and the base rectified current ⁇ Ib is generated, the base voltage Vb is reduced by a voltage drop of A Vb. Therefore, when the high-frequency input signal Pin increases, the bias class of the high-frequency amplifier 1 approaches the class B, and the saturation output power and the efficiency are reduced.
- the operation in which the voltage drop AVb occurs will be described.
- the input power of the high-frequency amplifier 1 increases, and A lb or a base rectified current is generated.
- the constant voltage bias circuit 2 Let us consider the case where the base current I brf output from A increases by A lb.
- a I b A I e d c 2 + A I b d c l
- ⁇ I bdc1 is given by the following equation.
- AIbdcl AIb
- the voltage drop A Vb of the output voltage V b is ing the following equation.
- n is a correction coefficient
- k is a Boltzmann coefficient
- T is an absolute temperature
- q is a charge
- Is is a saturation current
- the present invention has been made in order to solve the above-described problems, and to provide a high-frequency amplifier capable of maintaining high efficiency even when a high-frequency input signal increases and a pace rectification current is generated. With the goal. Disclosure of the invention
- the high-frequency amplifier according to the present invention includes a first and a second resistor and a third N
- the first and second power mirrors which constitute a power mirror between the PN bipolar transistor and the collector current of the third NPN bipolar transistor and determine the collector current of the second NPN bipolar transistor. It has a PNP bipolar transistor.
- the size ratio of the first and second PNP bipolar transistors constituting the current mirror it is possible to increase the base voltage when a high-frequency input signal increases and a pace rectification current occurs.
- the effect is that it can be adjusted to a constant, reduced, or adjusted.
- the high frequency amplifying device is characterized in that a collector current of a third NPN bipolar transistor is used as a reference current between the first and second resistors and the third NPN bipolar transistor, and a second NPN It has first and second PMOS transistors that constitute a power mirror that determines the collector current of a bipolar transistor.
- the size ratio of the first and second PMOS transistors forming the current mirror is designed so that the voltage drop becomes zero or infinitely close to zero.
- a voltage drop of a pace voltage is suppressed, and as a result, high output and high efficiency can be obtained.
- the base voltage is increased when the high-frequency input signal increases and base rectification current occurs. Or to keep it constant There is an effect that can be reduced and adjusted.
- FIG. 1 is a circuit diagram showing a conventional high-frequency amplifier.
- FIG. 2 is a circuit diagram showing a high-frequency amplifier according to Embodiment 1 of the present invention.
- FIG. 3 is a circuit diagram showing a high-frequency amplifier according to Embodiment 2 of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 2 is a circuit diagram showing a high-frequency amplifier according to Embodiment 1 of the present invention.
- 1 is a high-frequency amplifier using an NPN bipolar transistor such as a BJT or HBT as an amplifying element
- 2 is a high-frequency amplifier.
- This is a constant voltage bias circuit that supplies a base bias voltage to the high frequency amplifier 1.
- 3 is an NPN bipolar transistor (first NPN bipolar transistor) such as a BJT or HBT
- 4 is a ground connected to the emitter terminal of the NPN bipolar transistor 3
- 5 is a high-frequency signal input terminal.
- Reference numeral 6 denotes a high-frequency signal output terminal
- 7 denotes a base bias terminal
- 8 denotes a collector bias terminal.
- reference numeral 11 denotes an NPN bipolar transistor (second NPN bipolar transistor) such as a BJT or HBT which constitutes a current mirror together with the NPN bipolar transistor 3 of the high-frequency amplifier 1.
- Base terminal is connected to pace bias terminal 7.
- the emitter terminal is connected to ground 4.
- Reference numeral 2 denotes an NPN bipolar transistor (third NPN bipolar transistor) such as a BJT or HBT for base current compensation, the base terminal of which is connected to the collector terminal of the NPN bipolar transistor 11 and its emitter. ⁇
- the evening terminal is connected to the base terminal of NPN bipolar transistor 11.
- reference numeral 20 denotes a current mirror which determines the collector current of the NPN bipolar transistor 11 using the collector current of the NPN bipolar transistor 12 as a reference current
- reference numerals 21 and 22 which constitute the current mirror of the BJT and HBT PNP bipolar transistors (first and second PNP bipolar transistors)
- the base terminals of PNP bipolar transistors 21 and 22 are connected to each other
- the PNP bipolar transistors 21 Both the negative terminal and the collector terminal are connected to the collector terminal of the NPN bipolar transistor 12 and the collector terminal of the PNP bipolar transistor 22 is connected to the base terminal of the NPN bipolar transistor 12 .
- 13 is a resistor (first resistor) connected between the emitter terminal of the PNP bipolar transistor 21 and the power supply / voltage setting terminal 15, and 14 is an emitter of the PNP bipolar transistor 22.
- a resistor (second resistor) connected between the terminal and the power supply / voltage setting terminal 15 (second resistor), 41 is between the collector terminal of the PNP bipolar transistor 22 and the power supply voltage setting terminal 15
- the connected resistor, 42 is an activation circuit composed of the resistor 41.
- the high-frequency signal Pin is input from the high-frequency signal input terminal 5 to the high-frequency amplifier 1, amplified by the high-frequency amplifier 1, and then output from the high-frequency signal output terminal 6.
- the base voltage Vb and the base current I brf are —Supplied from the bias circuit 2, the collector current I crf and the collector voltage V c are supplied from the collector bias terminal 8.
- the base voltage Vb and the base current Ibrf are determined as follows.
- the size of the NPN bipolar transistor 11 constituting the current mirror together with the NPN bipolar transistor 3 of the high-frequency amplifier 1 is 1
- the size of the NPN bipolar transistor 3 of the high-frequency amplifier 1 is N
- the pace current compensation is M
- M the size of the NPN Bipo for La Transis evening 12
- these three NPN bipolar transistors 3, 11, 12 have the same structure, and the current amplification factor is / ?.
- the size ratio of the PNP bipolar transistors 21 and 22 constituting the current mirror 20 is 1: A as shown in FIG. 2, and the current amplification factor is /? 2.
- the contact voltage V ref, the current I ref, I cdcl, I bdcl, I cdc 2, I edc 2, I bdc 2, I brf, I crf and the resistance R ref are defined as shown in FIG.
- the reference current I ref of the current mirror consisting of the NPN bipolar transistors 3 and 11 when the power supply voltage V pc is applied from the power supply / voltage setting terminal 15 of the constant voltage bias circuit 2 is the PNP bipolar transistor. Transistor Evening 2 When the pace-emitter voltage is Vb p np,
- I r e f (V p c-2-Vb -Vb p np) / R r e f
- V b (V p c-I r e f-R r e f -V b p n p) / 2
- the base voltage Vb and the pace current Ib are supplied as the outputs of the constant voltage bias circuit 2.
- the collector terminal of the NPN bipolar transistor 11 and the collector terminal of the PNP bipolar transistor 22 are connected to the power supply / voltage setting terminal 15 via the starter circuit 42 composed of the resistor 41.
- the constant voltage bias circuit 2 starts.
- a I b A I e d c 2 + A I b d c l
- AI bdc 2 AI ref-AI cdcl ⁇ 2
- AIbdc2 -AIbdcl
- a I b A I e d c 2 + A I b d c
- ⁇ is a correction coefficient
- k is an absolute temperature
- T is a Bollmann coefficient
- q is a charge
- Is is a saturation current
- the high-frequency amplifier according to Embodiment 1 of the present invention when the high-frequency input signal Pin increases and the pace rectification current ⁇ Ib occurs, the base voltage Vb is reduced by only AVb. To rise. As a result, when the high-frequency input signal Pin increases, the bias class of the high-frequency amplifier 1 approaches the class A, and the saturation output power and the efficiency can be increased.
- a resistor is generally inserted between the base bias terminal 7 of the high-frequency amplifier 1 of FIG. 2 and the constant-voltage bias circuit 2 for isolation.
- the base voltage Vb can be increased, made constant, decreased, or adjusted.
- the size ratio A of the PNP bipolar transistors 21 and 22 constituting the current mirror 20 the high-frequency input signal Pin increases and the base rectification current ⁇ Ib is generated.
- the base voltage V b can be increased, made constant, decreased, or adjusted
- FIG. 3 is a circuit diagram showing a high-frequency amplifier according to a second embodiment of the present invention.
- reference numeral 30 denotes a collector current of the NPN bipolar transistor 12 as a reference current
- reference numeral 30 denotes a collector current of the NPN bipolar transistor 11.
- Current mirrors 31 and 32 which determine the collector current, are PMOS transistors (first and second PMOS transistors) constituting the current mirror, and the gates of the PMOS transistors 31 and 32 are the same.
- the gate terminals and the drain terminal of the PMOS transistor 31 are both connected to the collector terminal of the NPN bipolar transistor 12 and the drain terminal of the PMOS transistor 32 is an NPN bipolar transistor. It is connected to the base terminal of Rungis 12
- the resistor (first resistor) 13 is connected between the source terminal of the PMOS transistor 31 and the power supply Z voltage setting terminal 15, and the resistor (second resistor) 14 is
- the resistor 41 is connected between the source terminal of the PMOS transistor 32 and the power supply / voltage setting terminal 15, and the resistor 41 is connected between the drain terminal of the PMOS transistor 32 and the power supply / voltage setting terminal 15. Connected between Things.
- the starting circuit 42 is constituted by the resistor 41.
- the high-frequency signal Pin is input from the high-frequency signal input terminal 5 to the high-frequency amplifier 1, amplified by the high-frequency amplifier 1, and then output from the high-frequency signal output terminal 6.
- the base voltage Vb and the base current I brf are supplied from the constant voltage bias circuit 2, and the collector current Icrf and the collector voltage Vc are supplied from the collector bias terminal 8.
- the base voltage Vb and the base current I brf are determined as follows.
- the size of the NPN bipolar transistor 11 constituting the current mirror together with the NPN bipolar transistor 3 of the high-frequency amplifier 1 is 1
- the size of the NPN bipolar transistor 3 of the high-frequency amplifier 1 is N
- the base current compensation is M
- M the size of the NPN bipolar transistor Transistor evening 11
- these three NPN bipolar transistors 3, 11 and 12 have the same structure, and the current gain is / ?.
- the size ratio of the PMSO transistors 31 and 32 constituting the current mirror 30 is set to 1: B as shown in FIG.
- a contact voltage Vref, a current Iref, Icdcl, Ibdc1, Icdc2, Iedc2, Ibdc2, Ibrf, Icrf, and a resistor Rref are defined as shown in FIG.
- the reference current I ref of the current mirror consisting of NPN bipolar transistors 3 and 11 when the power supply voltage V pc is applied from the power supply / voltage setting terminal 15 of the constant voltage bias circuit 2 is PMO. Assuming that the gate-to-source voltage of S transistor 32 is Vgs,
- I r e f (Vp c— 2-V b-V g s) / R r e f
- the collector current I crf of the NPN bipolar transistor 3 of the high-frequency amplifier 1 is Becomes At that time, the pace bias voltage V b of the ⁇ ⁇ ⁇ bipolar transistor 3 of the high-frequency amplifier 1 becomes
- V b (Vp c-I r e f-R r e f -Vg s) / 2
- the base voltage Vb and the base current Ib are supplied as outputs of the constant voltage bias circuit 2.
- the collector terminal of the NPN bipolar transistor 11 and the drain terminal of the PMOS transistor 32 are connected to the power supply / voltage setting terminal 15 via the start circuit 42 composed of the resistor 41.
- the constant voltage bias circuit 2 is activated by supplying the activation voltage to the point where is connected.
- a I b A I e d c 2 + A I b d c l
- a I b d c 2 A I r e f -A I c d c l
- AI bdc 2 AI ref-AI cdcl
- AIbdc2 ⁇ Ibdcl
- the high-frequency amplifier by setting the size ratio of the PMOS transistors 31 and 32 of the current mirror 30 to B> 1, the high-frequency input When the signal Pin increases and the base rectified current ⁇ Ib is generated, the pace voltage Vb can be increased by ⁇ Vb. As a result, when the high-frequency input signal Pin increases, the bias class of the high-frequency amplifier 1 approaches the class A, and the saturation output power and the efficiency can be increased.
- the high-frequency input signal Pin increased and the base rectification current ⁇ Ib was generated. At this time, the voltage drop of the base voltage Vb can be made zero. As a result, when the high-frequency input signal Pin increases, the bias class of the high-frequency amplifier 1 can be kept constant, and the saturation output power and the efficiency can be increased.
- the base voltage Vb can be increased, kept constant, decreased, and adjusted.
- a resistor is often inserted between the pace bias terminal 7 of the high-frequency amplifier 1 of FIG. 3 and the constant voltage bias circuit 2 for isolation.
- the size ratio B of the PMOS transistors 31 and 32 of the current mirror 30 simply by compensating for the voltage drop due to the resistance, it is possible to realize all the characteristics described above. It is possible.
- the high-frequency input signal Pin increases and the pace rectification current ⁇ Ib occurs. Then, if the base voltage Vb is increased by AVb, the base voltage Vb is increased, so that the pace current lb flowing to the high-frequency amplifier 1 is further increased. It may diverge due to the repetition of increasing voltage Vb.
- the isolation resistor to be generally inserted and the PMOS transistors 31, 32 constituting the power mirror 30 are connected.
- the size ratio B such that the voltage drop ⁇ Vb is exactly 0 or as close to 0 as possible, the high-frequency input signal Pin increases and the base rectification current ⁇ Ib occurs.
- the voltage drop AVb of the source voltage Vb is suppressed, and as a result, high output and high efficiency can be obtained.
- the high-frequency amplifier according to the present invention adjusts the base voltage when the high-frequency input signal increases and a base rectified current is generated by adjusting the size ratio of the transistors constituting the current mirror. It is suitable for satellite communication, terrestrial microwave communication, mobile communication, etc.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00966443A EP1326328B1 (en) | 2000-10-12 | 2000-10-12 | High-frequency amplifier |
DE60025376T DE60025376T2 (de) | 2000-10-12 | 2000-10-12 | Hochfrequenzverstärker |
KR10-2002-7007434A KR100490819B1 (ko) | 2000-10-12 | 2000-10-12 | 고주파 증폭 장치 |
PCT/JP2000/007085 WO2002031968A1 (en) | 2000-10-12 | 2000-10-12 | High-frequency amplifier |
CNB008170614A CN1205741C (zh) | 2000-10-12 | 2000-10-12 | 高频放大装置 |
JP2002535251A JP4083573B2 (ja) | 2000-10-12 | 2000-10-12 | 高周波増幅装置 |
US10/149,390 US6750720B1 (en) | 2000-10-12 | 2000-10-12 | High-frequency amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2000/007085 WO2002031968A1 (en) | 2000-10-12 | 2000-10-12 | High-frequency amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002031968A1 true WO2002031968A1 (en) | 2002-04-18 |
Family
ID=11736583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/007085 WO2002031968A1 (en) | 2000-10-12 | 2000-10-12 | High-frequency amplifier |
Country Status (7)
Country | Link |
---|---|
US (1) | US6750720B1 (ja) |
EP (1) | EP1326328B1 (ja) |
JP (1) | JP4083573B2 (ja) |
KR (1) | KR100490819B1 (ja) |
CN (1) | CN1205741C (ja) |
DE (1) | DE60025376T2 (ja) |
WO (1) | WO2002031968A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006509458A (ja) * | 2002-12-09 | 2006-03-16 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 拡張ウィルソン電流ミラー自己バイアス昇圧回路を有する増幅回路 |
JP2006094184A (ja) * | 2004-09-24 | 2006-04-06 | Mitsubishi Electric Corp | 高周波増幅装置 |
JP2006304178A (ja) * | 2005-04-25 | 2006-11-02 | New Japan Radio Co Ltd | 電力増幅器 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1855379B1 (en) * | 2006-05-12 | 2011-02-09 | STMicroelectronics Srl | Output power control of an RF amplifier |
US8854140B2 (en) * | 2012-12-19 | 2014-10-07 | Raytheon Company | Current mirror with saturated semiconductor resistor |
US10446195B2 (en) | 2016-06-29 | 2019-10-15 | Micron Technology, Inc. | Voltage generation circuit |
US10249348B2 (en) | 2017-07-28 | 2019-04-02 | Micron Technology, Inc. | Apparatuses and methods for generating a voltage in a memory |
CN112532191B (zh) * | 2021-02-10 | 2021-05-14 | 广州慧智微电子有限公司 | 一种功率放大器的功率检测电路及方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10303655A (ja) * | 1997-04-25 | 1998-11-13 | Nec Yamagata Ltd | 増幅回路 |
JPH1168473A (ja) * | 1997-08-18 | 1999-03-09 | Nec Corp | エミッタ接地増幅回路用バイアス回路 |
GB2343762A (en) * | 1998-11-04 | 2000-05-17 | Motorola Inc | Mid supply reference voltage generator |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH01168473A (ja) | 1987-12-24 | 1989-07-03 | Canon Inc | 画像記録装置 |
US6417734B1 (en) * | 2000-06-26 | 2002-07-09 | Koninklijke Philips Electronics N.V. | High-frequency amplifier circuit with negative impedance cancellation |
US6486739B1 (en) * | 2001-11-08 | 2002-11-26 | Koninklijke Philips Electronics N.V. | Amplifier with self-bias boosting using an enhanced wilson current mirror biasing scheme |
-
2000
- 2000-10-12 KR KR10-2002-7007434A patent/KR100490819B1/ko not_active IP Right Cessation
- 2000-10-12 DE DE60025376T patent/DE60025376T2/de not_active Expired - Fee Related
- 2000-10-12 JP JP2002535251A patent/JP4083573B2/ja not_active Expired - Lifetime
- 2000-10-12 EP EP00966443A patent/EP1326328B1/en not_active Expired - Lifetime
- 2000-10-12 US US10/149,390 patent/US6750720B1/en not_active Expired - Fee Related
- 2000-10-12 CN CNB008170614A patent/CN1205741C/zh not_active Expired - Fee Related
- 2000-10-12 WO PCT/JP2000/007085 patent/WO2002031968A1/ja active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10303655A (ja) * | 1997-04-25 | 1998-11-13 | Nec Yamagata Ltd | 増幅回路 |
JPH1168473A (ja) * | 1997-08-18 | 1999-03-09 | Nec Corp | エミッタ接地増幅回路用バイアス回路 |
GB2343762A (en) * | 1998-11-04 | 2000-05-17 | Motorola Inc | Mid supply reference voltage generator |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006509458A (ja) * | 2002-12-09 | 2006-03-16 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 拡張ウィルソン電流ミラー自己バイアス昇圧回路を有する増幅回路 |
JP2006094184A (ja) * | 2004-09-24 | 2006-04-06 | Mitsubishi Electric Corp | 高周波増幅装置 |
JP4672320B2 (ja) * | 2004-09-24 | 2011-04-20 | 三菱電機株式会社 | 高周波増幅装置 |
JP2006304178A (ja) * | 2005-04-25 | 2006-11-02 | New Japan Radio Co Ltd | 電力増幅器 |
Also Published As
Publication number | Publication date |
---|---|
KR20020067541A (ko) | 2002-08-22 |
DE60025376T2 (de) | 2006-09-28 |
DE60025376D1 (de) | 2006-03-30 |
US6750720B1 (en) | 2004-06-15 |
CN1205741C (zh) | 2005-06-08 |
CN1409892A (zh) | 2003-04-09 |
KR100490819B1 (ko) | 2005-05-24 |
JP4083573B2 (ja) | 2008-04-30 |
EP1326328A1 (en) | 2003-07-09 |
JPWO2002031968A1 (ja) | 2004-02-26 |
EP1326328B1 (en) | 2006-01-04 |
EP1326328A4 (en) | 2005-02-09 |
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