CN101809862B - 放大器电路 - Google Patents
放大器电路 Download PDFInfo
- Publication number
- CN101809862B CN101809862B CN200880108519.4A CN200880108519A CN101809862B CN 101809862 B CN101809862 B CN 101809862B CN 200880108519 A CN200880108519 A CN 200880108519A CN 101809862 B CN101809862 B CN 101809862B
- Authority
- CN
- China
- Prior art keywords
- signal
- audio
- input
- amplifier
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003321 amplification Effects 0.000 claims abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 72
- 238000000034 method Methods 0.000 claims description 24
- 238000007599 discharging Methods 0.000 claims description 7
- 230000005236 sound signal Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 13
- 238000003491 array Methods 0.000 description 8
- 230000003044 adaptive effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012421 spiking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000012120 mounting media Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
- H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors
-
- 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
-
- 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
-
- 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
-
- 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
- H03F1/0222—Continuous control by using a signal derived from the input signal
-
- 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
- H03F1/0222—Continuous control by using a signal derived from the input signal
- H03F1/0227—Continuous control by using a signal derived from the input signal 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
- H03F1/0205—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
- H03F1/025—Stepped control by using a signal derived from the input signal
-
- 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
- H03F1/02—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
- H03F1/0266—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 by using a signal derived from the input signal
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
- H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/193—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/001—Digital control of analog signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/002—Control of digital or coded signals
-
- 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
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/504—Indexing scheme relating to amplifiers the supply voltage or current being continuously controlled by a controlling signal, e.g. the controlling signal of a transistor implemented as variable resistor in a supply path for, an IC-block showed amplifier
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Amplifiers (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
Description
Claims (22)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510686674.6A CN105281676B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路 |
Applications Claiming Priority (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0715254.9A GB0715254D0 (en) | 2007-08-03 | 2007-08-03 | Amplifier circuit |
GB0715254.9 | 2007-08-03 | ||
GB0716922.0A GB2451527B (en) | 2007-08-03 | 2007-08-30 | Amplifier circuit |
GB0716926.1A GB2451529B (en) | 2007-08-03 | 2007-08-30 | Amplifier circuit |
GB0716919.6A GB2451525B (en) | 2007-08-03 | 2007-08-30 | Amplifier circuit |
GB0716922.0 | 2007-08-30 | ||
GB0716919.6 | 2007-08-30 | ||
GB0716917.0 | 2007-08-30 | ||
GB0716926.1 | 2007-08-30 | ||
GB0716917.0A GB2451524B (en) | 2007-08-03 | 2007-08-30 | Amplifier circuit |
PCT/GB2008/002641 WO2009019459A1 (en) | 2007-08-03 | 2008-08-04 | Amplifier circuit |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510686674.6A Division CN105281676B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101809862A CN101809862A (zh) | 2010-08-18 |
CN101809862B true CN101809862B (zh) | 2015-11-25 |
Family
ID=38529338
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200880108519.4A Active CN101809862B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路 |
CN201410345051.8A Active CN104135235B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路以及在放大器电路中将信号放大的方法 |
CN200880110115.9A Active CN101828333B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路以及在放大器电路中将信号放大的方法 |
CN201510686674.6A Active CN105281676B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路 |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410345051.8A Active CN104135235B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路以及在放大器电路中将信号放大的方法 |
CN200880110115.9A Active CN101828333B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路以及在放大器电路中将信号放大的方法 |
CN201510686674.6A Active CN105281676B (zh) | 2007-08-03 | 2008-08-04 | 放大器电路 |
Country Status (9)
Country | Link |
---|---|
US (6) | US8198941B2 (zh) |
EP (2) | EP2568599B1 (zh) |
JP (2) | JP2010536197A (zh) |
KR (2) | KR101466935B1 (zh) |
CN (4) | CN101809862B (zh) |
CA (1) | CA2711022C (zh) |
GB (9) | GB0715254D0 (zh) |
TW (2) | TWI465034B (zh) |
WO (2) | WO2009019460A1 (zh) |
Families Citing this family (190)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7719343B2 (en) | 2003-09-08 | 2010-05-18 | Peregrine Semiconductor Corporation | Low noise charge pump method and apparatus |
US8093946B2 (en) * | 2006-03-17 | 2012-01-10 | Nujira Limited | Joint optimisation of supply and bias modulation |
GB2438457B (en) * | 2006-03-17 | 2011-09-14 | Nujira Ltd | Joint optimisation of supply and bias modulation |
US9425747B2 (en) | 2008-03-03 | 2016-08-23 | Qualcomm Incorporated | System and method of reducing power consumption for audio playback |
EP2346169A3 (en) | 2008-07-18 | 2013-11-20 | Peregrine Semiconductor Corporation | Low-noise high efficiency bias generation circuits and method |
US8816659B2 (en) | 2010-08-06 | 2014-08-26 | Peregrine Semiconductor Corporation | Low-noise high efficiency bias generation circuits and method |
US9660590B2 (en) | 2008-07-18 | 2017-05-23 | Peregrine Semiconductor Corporation | Low-noise high efficiency bias generation circuits and method |
US8854019B1 (en) | 2008-09-25 | 2014-10-07 | Rf Micro Devices, Inc. | Hybrid DC/DC power converter with charge-pump and buck converter |
US9166471B1 (en) | 2009-03-13 | 2015-10-20 | Rf Micro Devices, Inc. | 3D frequency dithering for DC-to-DC converters used in multi-mode cellular transmitters |
CN102246477B (zh) * | 2009-04-07 | 2014-04-30 | 华为技术有限公司 | 提高线路驱动器的功率效率 |
US8315576B2 (en) | 2009-05-05 | 2012-11-20 | Rf Micro Devices, Inc. | Capacitive compensation of cascaded directional couplers |
US9112452B1 (en) | 2009-07-14 | 2015-08-18 | Rf Micro Devices, Inc. | High-efficiency power supply for a modulated load |
KR20110027023A (ko) * | 2009-09-09 | 2011-03-16 | 삼성전자주식회사 | 음성처리장치 및 방법 |
CN102075146B (zh) * | 2009-10-20 | 2013-07-10 | 成都芯源***有限公司 | G类音频放大***及方法 |
CN103346739B (zh) * | 2009-10-20 | 2016-08-10 | 成都芯源***有限公司 | G类音频放大***及方法 |
WO2011083758A1 (ja) * | 2010-01-07 | 2011-07-14 | パナソニック株式会社 | 増幅装置 |
US8548398B2 (en) | 2010-02-01 | 2013-10-01 | Rf Micro Devices, Inc. | Envelope power supply calibration of a multi-mode radio frequency power amplifier |
US8981848B2 (en) | 2010-04-19 | 2015-03-17 | Rf Micro Devices, Inc. | Programmable delay circuitry |
US8538355B2 (en) | 2010-04-19 | 2013-09-17 | Rf Micro Devices, Inc. | Quadrature power amplifier architecture |
US9099961B2 (en) | 2010-04-19 | 2015-08-04 | Rf Micro Devices, Inc. | Output impedance compensation of a pseudo-envelope follower power management system |
US8519788B2 (en) * | 2010-04-19 | 2013-08-27 | Rf Micro Devices, Inc. | Boost charge-pump with fractional ratio and offset loop for supply modulation |
EP2782247B1 (en) | 2010-04-19 | 2018-08-15 | Qorvo US, Inc. | Pseudo-envelope following power management system |
US9431974B2 (en) | 2010-04-19 | 2016-08-30 | Qorvo Us, Inc. | Pseudo-envelope following feedback delay compensation |
US8633766B2 (en) | 2010-04-19 | 2014-01-21 | Rf Micro Devices, Inc. | Pseudo-envelope follower power management system with high frequency ripple current compensation |
US8942651B2 (en) | 2010-04-20 | 2015-01-27 | Rf Micro Devices, Inc. | Cascaded converged power amplifier |
US8831544B2 (en) * | 2010-04-20 | 2014-09-09 | Rf Micro Devices, Inc. | Dynamic device switching (DDS) of an in-phase RF PA stage and a quadrature-phase RF PA stage |
US8515361B2 (en) | 2010-04-20 | 2013-08-20 | Rf Micro Devices, Inc. | Frequency correction of a programmable frequency oscillator by propagation delay compensation |
US8565694B2 (en) * | 2010-04-20 | 2013-10-22 | Rf Micro Devices, Inc. | Split current current digital-to-analog converter (IDAC) for dynamic device switching (DDS) of an RF PA stage |
US8983410B2 (en) | 2010-04-20 | 2015-03-17 | Rf Micro Devices, Inc. | Configurable 2-wire/3-wire serial communications interface |
US9362825B2 (en) | 2010-04-20 | 2016-06-07 | Rf Micro Devices, Inc. | Look-up table based configuration of a DC-DC converter |
US8559898B2 (en) * | 2010-04-20 | 2013-10-15 | Rf Micro Devices, Inc. | Embedded RF PA temperature compensating bias transistor |
US8731498B2 (en) | 2010-04-20 | 2014-05-20 | Rf Micro Devices, Inc. | Temperature correcting an envelope power supply signal for RF PA circuitry |
US8811921B2 (en) | 2010-04-20 | 2014-08-19 | Rf Micro Devices, Inc. | Independent PA biasing of a driver stage and a final stage |
US8913971B2 (en) | 2010-04-20 | 2014-12-16 | Rf Micro Devices, Inc. | Selecting PA bias levels of RF PA circuitry during a multislot burst |
US9553550B2 (en) | 2010-04-20 | 2017-01-24 | Qorvo Us, Inc. | Multiband RF switch ground isolation |
US9184701B2 (en) | 2010-04-20 | 2015-11-10 | Rf Micro Devices, Inc. | Snubber for a direct current (DC)-DC converter |
US8989685B2 (en) | 2010-04-20 | 2015-03-24 | Rf Micro Devices, Inc. | Look-up table based configuration of multi-mode multi-band radio frequency power amplifier circuitry |
US8706063B2 (en) | 2010-04-20 | 2014-04-22 | Rf Micro Devices, Inc. | PA envelope power supply undershoot compensation |
US8542061B2 (en) | 2010-04-20 | 2013-09-24 | Rf Micro Devices, Inc. | Charge pump based power amplifier envelope power supply and bias power supply |
US8712349B2 (en) | 2010-04-20 | 2014-04-29 | Rf Micro Devices, Inc. | Selecting a converter operating mode of a PA envelope power supply |
US9577590B2 (en) | 2010-04-20 | 2017-02-21 | Qorvo Us, Inc. | Dual inductive element charge pump buck and buck power supplies |
US8958763B2 (en) | 2010-04-20 | 2015-02-17 | Rf Micro Devices, Inc. | PA bias power supply undershoot compensation |
US9214865B2 (en) | 2010-04-20 | 2015-12-15 | Rf Micro Devices, Inc. | Voltage compatible charge pump buck and buck power supplies |
US9077405B2 (en) | 2010-04-20 | 2015-07-07 | Rf Micro Devices, Inc. | High efficiency path based power amplifier circuitry |
US8811920B2 (en) | 2010-04-20 | 2014-08-19 | Rf Micro Devices, Inc. | DC-DC converter semiconductor die structure |
US9900204B2 (en) | 2010-04-20 | 2018-02-20 | Qorvo Us, Inc. | Multiple functional equivalence digital communications interface |
US8947157B2 (en) | 2010-04-20 | 2015-02-03 | Rf Micro Devices, Inc. | Voltage multiplier charge pump buck |
US8571492B2 (en) | 2010-04-20 | 2013-10-29 | Rf Micro Devices, Inc. | DC-DC converter current sensing |
US8842399B2 (en) | 2010-04-20 | 2014-09-23 | Rf Micro Devices, Inc. | ESD protection of an RF PA semiconductor die using a PA controller semiconductor die |
US9030256B2 (en) | 2010-04-20 | 2015-05-12 | Rf Micro Devices, Inc. | Overlay class F choke |
US8942650B2 (en) | 2010-04-20 | 2015-01-27 | Rf Micro Devices, Inc. | RF PA linearity requirements based converter operating mode selection |
US9214900B2 (en) | 2010-04-20 | 2015-12-15 | Rf Micro Devices, Inc. | Interference reduction between RF communications bands |
US8983407B2 (en) | 2010-04-20 | 2015-03-17 | Rf Micro Devices, Inc. | Selectable PA bias temperature compensation circuitry |
US8892063B2 (en) | 2010-04-20 | 2014-11-18 | Rf Micro Devices, Inc. | Linear mode and non-linear mode quadrature PA circuitry |
US9048787B2 (en) | 2010-04-20 | 2015-06-02 | Rf Micro Devices, Inc. | Combined RF detector and RF attenuator with concurrent outputs |
US8913967B2 (en) | 2010-04-20 | 2014-12-16 | Rf Micro Devices, Inc. | Feedback based buck timing of a direct current (DC)-DC converter |
US8699973B2 (en) | 2010-04-20 | 2014-04-15 | Rf Micro Devices, Inc. | PA bias power supply efficiency optimization |
US9008597B2 (en) | 2010-04-20 | 2015-04-14 | Rf Micro Devices, Inc. | Direct current (DC)-DC converter having a multi-stage output filter |
CN102893518B (zh) * | 2010-05-14 | 2016-03-16 | 松下知识产权经营株式会社 | 放大装置 |
CN101867284B (zh) * | 2010-05-31 | 2012-11-21 | 华为技术有限公司 | 快速跟踪电源的控制方法、快速跟踪电源及*** |
US8866549B2 (en) | 2010-06-01 | 2014-10-21 | Rf Micro Devices, Inc. | Method of power amplifier calibration |
TWI485979B (zh) * | 2010-07-21 | 2015-05-21 | Monolithic Power Systems Inc | G類音頻放大系統及方法 |
WO2012027039A1 (en) | 2010-08-25 | 2012-03-01 | Rf Micro Devices, Inc. | Multi-mode/multi-band power management system |
US20120049903A1 (en) * | 2010-08-30 | 2012-03-01 | Rf Micro Devices, Inc. | Low noise charge pump |
WO2012047738A1 (en) | 2010-09-29 | 2012-04-12 | Rf Micro Devices, Inc. | SINGLE μC-BUCKBOOST CONVERTER WITH MULTIPLE REGULATED SUPPLY OUTPUTS |
US9501714B2 (en) | 2010-10-29 | 2016-11-22 | Qualcomm Incorporated | Systems and methods to improve feature generation in object recognition |
US20120166117A1 (en) | 2010-10-29 | 2012-06-28 | Xia Llc | Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage |
WO2012068258A2 (en) | 2010-11-16 | 2012-05-24 | Rf Micro Devices, Inc. | Digital fast cordic for envelope tracking generation |
US8717211B2 (en) | 2010-11-30 | 2014-05-06 | Qualcomm Incorporated | Adaptive gain adjustment system |
KR101204569B1 (ko) * | 2010-12-03 | 2012-11-23 | 에스케이하이닉스 주식회사 | 고전압 발생기 및 고전압 발생 방법 |
US8598950B2 (en) * | 2010-12-14 | 2013-12-03 | Skyworks Solutions, Inc. | Apparatus and methods for capacitive load reduction |
US8755447B2 (en) * | 2010-12-22 | 2014-06-17 | Shure Acquisition Holdings, Inc. | Wireless audio equipment using a quadrature modulation system |
GB2486701B (en) | 2010-12-23 | 2013-01-09 | Wolfson Microelectronics Plc | Charge pump circuit |
US8588713B2 (en) | 2011-01-10 | 2013-11-19 | Rf Micro Devices, Inc. | Power management system for multi-carriers transmitter |
KR101213778B1 (ko) * | 2011-01-11 | 2012-12-18 | (주)펄서스 테크놀러지 | 노이즈 보상을 위한 전압 가변형 디지털 오디오 증폭 장치 및 그 방법 |
US9264053B2 (en) | 2011-01-18 | 2016-02-16 | Peregrine Semiconductor Corporation | Variable frequency charge pump |
US8686787B2 (en) | 2011-05-11 | 2014-04-01 | Peregrine Semiconductor Corporation | High voltage ring pump with inverter stages and voltage boosting stages |
US8570200B2 (en) * | 2011-01-20 | 2013-10-29 | Mediatek Singapore Pte. Ltd. | Continuous-time oversampled converter having enhanced immunity to noise |
US8611402B2 (en) | 2011-02-02 | 2013-12-17 | Rf Micro Devices, Inc. | Fast envelope system calibration |
EP2673880B1 (en) | 2011-02-07 | 2017-09-06 | Qorvo US, Inc. | Group delay calibration method for power amplifier envelope tracking |
US8354889B2 (en) | 2011-02-07 | 2013-01-15 | Ubidyne, Inc. | Power amplifier with dynamically added supply voltages |
US8624760B2 (en) | 2011-02-07 | 2014-01-07 | Rf Micro Devices, Inc. | Apparatuses and methods for rate conversion and fractional delay calculation using a coefficient look up table |
KR101401817B1 (ko) * | 2011-02-28 | 2014-05-29 | 비덱스 에이/에스 | H-브리지 출력 스테이지를 갖는 보청기 및 출력 스테이지를 구동하는 방법 |
US20120235730A1 (en) * | 2011-03-14 | 2012-09-20 | Qualcomm Incorporated | Charge pump surge current reduction |
US8718188B2 (en) * | 2011-04-25 | 2014-05-06 | Skyworks Solutions, Inc. | Apparatus and methods for envelope tracking |
US9247496B2 (en) | 2011-05-05 | 2016-01-26 | Rf Micro Devices, Inc. | Power loop control based envelope tracking |
US9246460B2 (en) | 2011-05-05 | 2016-01-26 | Rf Micro Devices, Inc. | Power management architecture for modulated and constant supply operation |
US9379667B2 (en) | 2011-05-05 | 2016-06-28 | Rf Micro Devices, Inc. | Multiple power supply input parallel amplifier based envelope tracking |
EP2715945B1 (en) | 2011-05-31 | 2017-02-01 | Qorvo US, Inc. | Rugged iq receiver based rf gain measurements |
US9019011B2 (en) | 2011-06-01 | 2015-04-28 | Rf Micro Devices, Inc. | Method of power amplifier calibration for an envelope tracking system |
EP2535728B1 (en) * | 2011-06-15 | 2019-08-07 | Lucas Automotive GmbH | Electrical control unit for a vehicle actuation system |
US8760228B2 (en) | 2011-06-24 | 2014-06-24 | Rf Micro Devices, Inc. | Differential power management and power amplifier architecture |
US8626091B2 (en) | 2011-07-15 | 2014-01-07 | Rf Micro Devices, Inc. | Envelope tracking with variable compression |
US8952710B2 (en) | 2011-07-15 | 2015-02-10 | Rf Micro Devices, Inc. | Pulsed behavior modeling with steady state average conditions |
WO2013012787A2 (en) | 2011-07-15 | 2013-01-24 | Rf Micro Devices, Inc. | Modified switching ripple for envelope tracking system |
US9263996B2 (en) | 2011-07-20 | 2016-02-16 | Rf Micro Devices, Inc. | Quasi iso-gain supply voltage function for envelope tracking systems |
US8618868B2 (en) | 2011-08-17 | 2013-12-31 | Rf Micro Devices, Inc. | Single charge-pump buck-boost for providing independent voltages |
US8942652B2 (en) | 2011-09-02 | 2015-01-27 | Rf Micro Devices, Inc. | Split VCC and common VCC power management architecture for envelope tracking |
US8970298B2 (en) * | 2011-09-02 | 2015-03-03 | Tempo Semiconductor, Inc. | Digitally controlled power supplies for an audio amplifier |
US8957728B2 (en) | 2011-10-06 | 2015-02-17 | Rf Micro Devices, Inc. | Combined filter and transconductance amplifier |
US8493151B2 (en) * | 2011-10-10 | 2013-07-23 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method and apparatus for programmable gain control useful with digital to analog converter |
US9294041B2 (en) | 2011-10-26 | 2016-03-22 | Rf Micro Devices, Inc. | Average frequency control of switcher for envelope tracking |
US9484797B2 (en) | 2011-10-26 | 2016-11-01 | Qorvo Us, Inc. | RF switching converter with ripple correction |
CN103959189B (zh) | 2011-10-26 | 2015-12-23 | 射频小型装置公司 | 基于电感的并行放大器相位补偿 |
US9024688B2 (en) | 2011-10-26 | 2015-05-05 | Rf Micro Devices, Inc. | Dual parallel amplifier based DC-DC converter |
US8975959B2 (en) | 2011-11-30 | 2015-03-10 | Rf Micro Devices, Inc. | Monotonic conversion of RF power amplifier calibration data |
US9515621B2 (en) | 2011-11-30 | 2016-12-06 | Qorvo Us, Inc. | Multimode RF amplifier system |
US9250643B2 (en) | 2011-11-30 | 2016-02-02 | Rf Micro Devices, Inc. | Using a switching signal delay to reduce noise from a switching power supply |
WO2013082384A1 (en) | 2011-12-01 | 2013-06-06 | Rf Micro Devices, Inc. | Rf power converter |
US9041365B2 (en) | 2011-12-01 | 2015-05-26 | Rf Micro Devices, Inc. | Multiple mode RF power converter |
US8947161B2 (en) | 2011-12-01 | 2015-02-03 | Rf Micro Devices, Inc. | Linear amplifier power supply modulation for envelope tracking |
US9256234B2 (en) | 2011-12-01 | 2016-02-09 | Rf Micro Devices, Inc. | Voltage offset loop for a switching controller |
US9280163B2 (en) | 2011-12-01 | 2016-03-08 | Rf Micro Devices, Inc. | Average power tracking controller |
US9494962B2 (en) | 2011-12-02 | 2016-11-15 | Rf Micro Devices, Inc. | Phase reconfigurable switching power supply |
US9813036B2 (en) | 2011-12-16 | 2017-11-07 | Qorvo Us, Inc. | Dynamic loadline power amplifier with baseband linearization |
US9298198B2 (en) | 2011-12-28 | 2016-03-29 | Rf Micro Devices, Inc. | Noise reduction for envelope tracking |
US9065505B2 (en) | 2012-01-31 | 2015-06-23 | Rf Micro Devices, Inc. | Optimal switching frequency for envelope tracking power supply |
US8981839B2 (en) | 2012-06-11 | 2015-03-17 | Rf Micro Devices, Inc. | Power source multiplexer |
CN104662792B (zh) | 2012-07-26 | 2017-08-08 | Qorvo美国公司 | 用于包络跟踪的可编程rf陷波滤波器 |
EP2704319B1 (en) | 2012-08-28 | 2017-03-01 | Samsung Electronics Co., Ltd | Audio device and output method thereof |
US9225231B2 (en) | 2012-09-14 | 2015-12-29 | Rf Micro Devices, Inc. | Open loop ripple cancellation circuit in a DC-DC converter |
US9197256B2 (en) | 2012-10-08 | 2015-11-24 | Rf Micro Devices, Inc. | Reducing effects of RF mixer-based artifact using pre-distortion of an envelope power supply signal |
US9207692B2 (en) | 2012-10-18 | 2015-12-08 | Rf Micro Devices, Inc. | Transitioning from envelope tracking to average power tracking |
GB2507332B (en) | 2012-10-26 | 2016-09-14 | Cirrus Logic Int Semiconductor Ltd | Digital/analogue conversion |
US9627975B2 (en) | 2012-11-16 | 2017-04-18 | Qorvo Us, Inc. | Modulated power supply system and method with automatic transition between buck and boost modes |
US8781414B2 (en) * | 2012-12-11 | 2014-07-15 | Intel Mobile Communications GmbH | Envelope detector and method for detecting an envelope of a signal to be amplified by a power amplifier |
US9699558B2 (en) | 2012-12-12 | 2017-07-04 | Apple Inc. | Creation of sub-sample delays in digital audio |
EP2744103A1 (en) * | 2012-12-13 | 2014-06-18 | Dialog Semiconductor GmbH | Boosted differential Class H Amplifier |
US9929696B2 (en) | 2013-01-24 | 2018-03-27 | Qorvo Us, Inc. | Communications based adjustments of an offset capacitive voltage |
US9178472B2 (en) | 2013-02-08 | 2015-11-03 | Rf Micro Devices, Inc. | Bi-directional power supply signal based linear amplifier |
EP2773033B1 (en) | 2013-02-28 | 2018-12-05 | Dialog Semiconductor GmbH | Divide by 2 and 3 charge pump methods |
WO2014152876A1 (en) | 2013-03-14 | 2014-09-25 | Rf Micro Devices, Inc | Noise conversion gain limited rf power amplifier |
US9197162B2 (en) | 2013-03-14 | 2015-11-24 | Rf Micro Devices, Inc. | Envelope tracking power supply voltage dynamic range reduction |
US9154095B2 (en) | 2013-03-15 | 2015-10-06 | Bose Corporation | Boost-on-demand amplifier |
US9184705B2 (en) | 2013-03-15 | 2015-11-10 | Bose Corporation | Feedback mechanism for boost-on-demand amplifiers |
US9106501B2 (en) * | 2013-04-03 | 2015-08-11 | Telefonaktiebolaget L M Ericsson (Publ) | Quadrature power amplifier having increased efficiency |
US9479118B2 (en) | 2013-04-16 | 2016-10-25 | Rf Micro Devices, Inc. | Dual instantaneous envelope tracking |
GB2515819B (en) * | 2013-07-05 | 2016-12-07 | Cirrus Logic Int Semiconductor Ltd | Signal envelope processing |
US9374005B2 (en) | 2013-08-13 | 2016-06-21 | Rf Micro Devices, Inc. | Expanded range DC-DC converter |
GB2557051B (en) * | 2013-10-23 | 2018-08-22 | Cirrus Logic Int Semiconductor Ltd | Class-D amplifier circuits |
KR102114726B1 (ko) * | 2013-10-23 | 2020-06-05 | 삼성전자주식회사 | 전력 증폭 장치 및 방법 |
TWI499187B (zh) * | 2013-12-09 | 2015-09-01 | Orise Technology Co Ltd | 可減少切換損失之充電泵控制系統及方法 |
US9900708B2 (en) | 2013-12-27 | 2018-02-20 | Gn Hearing A/S | Hearing instrument with switchable power supply voltage |
US9543908B2 (en) | 2014-02-21 | 2017-01-10 | Bang & Olufsen A/S | Adaptive rail voltage regulation on power supplies |
US9614476B2 (en) | 2014-07-01 | 2017-04-04 | Qorvo Us, Inc. | Group delay calibration of RF envelope tracking |
US9462368B2 (en) * | 2014-10-22 | 2016-10-04 | Ess Technology, Inc. | Data input on audio device analog output port |
US9673762B2 (en) * | 2014-10-24 | 2017-06-06 | Cirrus Logic, Inc. | Amplifier with adjustable ramp up/down gain for minimizing or eliminating pop noise |
CN104333331B (zh) * | 2014-11-10 | 2017-04-19 | 华勤通讯技术有限公司 | 音频功放电路的供电方法和装置及音频播放设备 |
US9800141B2 (en) * | 2015-03-10 | 2017-10-24 | Intel IP Corporation | Hysteretic current control with event dithering |
US9976924B2 (en) * | 2015-04-20 | 2018-05-22 | Infineon Technologies Ag | System and method for a MEMS sensor |
CN106067823B (zh) * | 2015-04-20 | 2020-12-08 | 英飞凌科技股份有限公司 | 用于mems传感器的***和方法 |
US9912297B2 (en) | 2015-07-01 | 2018-03-06 | Qorvo Us, Inc. | Envelope tracking power converter circuitry |
US9941844B2 (en) | 2015-07-01 | 2018-04-10 | Qorvo Us, Inc. | Dual-mode envelope tracking power converter circuitry |
US9804368B2 (en) * | 2015-10-05 | 2017-10-31 | Omnivision Technologies, Inc. | Near-infrared hybrid lens systems with wide field of view |
GB2547707B (en) * | 2016-02-26 | 2020-04-08 | Entotem Ltd | Controlling a power amplification stage of an audio signal amplifier |
US10128803B2 (en) * | 2016-04-22 | 2018-11-13 | Cirrus Logic, Inc. | Systems and methods for predictive switching in audio amplifiers |
US10483924B2 (en) * | 2016-04-22 | 2019-11-19 | Cirrus Logic, Inc. | Systems and methods for predictive switching in audio amplifiers |
US9973147B2 (en) | 2016-05-10 | 2018-05-15 | Qorvo Us, Inc. | Envelope tracking power management circuit |
CN106101933B (zh) * | 2016-07-11 | 2020-07-31 | Tcl通力电子(惠州)有限公司 | 功放***的音量调节方法及装置 |
US10447207B2 (en) * | 2016-08-08 | 2019-10-15 | Skyworks Solutions, Inc. | Switch with envelope injection |
CN106330103B (zh) * | 2016-08-24 | 2019-05-21 | 黄山学院 | 电荷域电流信号放大电路及采用该放大电路的检测电路 |
CN106101936B (zh) * | 2016-08-25 | 2022-03-25 | 南昌黑鲨科技有限公司 | 一种基于音乐最大电平的音频放大装置、方法及终端 |
CN106131750B (zh) * | 2016-08-25 | 2022-04-01 | 南昌黑鲨科技有限公司 | 一种音频放大装置、方法及终端 |
US9768800B1 (en) * | 2016-09-13 | 2017-09-19 | Analog Devices, Inc. | Envelope dependent output stage scalability |
KR102547951B1 (ko) * | 2016-09-20 | 2023-06-26 | 삼성전자주식회사 | 재구성 가능한 양극성 출력 차지 펌프 회로 및 이를 포함하는 집적 회로 |
JP6891444B2 (ja) * | 2016-10-19 | 2021-06-18 | ヤマハ株式会社 | 回路および楽器 |
WO2018128937A1 (en) | 2017-01-06 | 2018-07-12 | Avnera Corporation | Power supply for class g amplifier |
GB2573601B (en) * | 2017-02-28 | 2020-09-16 | Cirrus Logic Int Semiconductor Ltd | Amplifiers |
US10411651B2 (en) * | 2017-04-13 | 2019-09-10 | Chengdu University Of Information Technology | High-efficiency amplifying device and method for controlling power supply thereof |
US10491997B2 (en) * | 2017-04-27 | 2019-11-26 | Cirrus Logic, Inc. | Controlling noise transfer function of signal path to reduce charge pump noise |
EP3528000A1 (en) * | 2018-02-15 | 2019-08-21 | Koninklijke Philips N.V. | Rf transmit system with switchable power supply device |
US10476437B2 (en) | 2018-03-15 | 2019-11-12 | Qorvo Us, Inc. | Multimode voltage tracker circuit |
US10498306B1 (en) * | 2018-07-02 | 2019-12-03 | Roku, Inc. | Intelligent power reduction in audio amplifiers |
CN108810753B (zh) * | 2018-09-14 | 2020-09-08 | 厦门傅里叶电子有限公司 | 一种适用于数字音频芯片的自适应Boost电路装置 |
DE102018128659A1 (de) * | 2018-11-15 | 2020-05-20 | Tesat-Spacecom Gmbh & Co. Kg | Hochfrequenzbaugruppe mit Anschlussschnittstelle |
TWI713303B (zh) * | 2019-02-12 | 2020-12-11 | 瑞昱半導體股份有限公司 | 具有適應性供電之射頻放大器 |
US10855228B2 (en) * | 2019-03-29 | 2020-12-01 | Intel Corporation | Voltage regulation systems and methods with adjustable boost and step-down regulation |
CN110022514B (zh) * | 2019-05-17 | 2021-08-13 | 深圳市湾区通信技术有限公司 | 音频信号的降噪方法、装置、***及计算机存储介质 |
CN110580919B (zh) * | 2019-08-19 | 2021-09-28 | 东南大学 | 多噪声场景下语音特征提取方法及可重构语音特征提取装置 |
CN112702681B (zh) | 2019-10-23 | 2022-04-08 | 北京小米移动软件有限公司 | 立体声音频设备及其电源控制方法、装置、移动终端 |
CN112714384B (zh) * | 2019-10-24 | 2022-05-20 | 北京小米移动软件有限公司 | 立体声输出控制装置及方法、电子设备及存储介质 |
US10965255B1 (en) * | 2019-10-30 | 2021-03-30 | Psemi Corporation | Overvoltage protection for power amplifier with soft shutdown |
US11444590B2 (en) * | 2019-12-16 | 2022-09-13 | Synaptics Incorporated | Class-G control system with low latency signal path |
CN111343539A (zh) * | 2020-02-25 | 2020-06-26 | 惠州华阳通用电子有限公司 | 一种高信噪比车载影音***及其实现方法 |
WO2022070710A1 (ja) * | 2020-09-30 | 2022-04-07 | ローム株式会社 | オーディオ回路、それを用いた電子機器および車載オーディオシステム |
US11581865B2 (en) * | 2021-05-18 | 2023-02-14 | Cirrus Logic, Inc. | Audio system with compressor sidechain frequency-biasing filter for switched-mode power supply overboost energy utilization |
US20220385237A1 (en) * | 2021-05-26 | 2022-12-01 | Skyworks Solutions, Inc. | Load modulated power amplifiers |
CN113329294B (zh) * | 2021-05-31 | 2024-03-22 | 昆山海菲曼科技集团股份有限公司 | 一种音频控制芯片及耳机 |
CN114020238A (zh) * | 2021-11-04 | 2022-02-08 | 银芯微(无锡)科技有限公司 | 一种承载语音提示功能的mcu芯片 |
CN115790566B (zh) * | 2023-01-31 | 2023-04-28 | 中国船舶集团有限公司第七〇七研究所 | 一种防止光纤陀螺闭环失效的调节方法及光纤陀螺 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994011799A1 (en) * | 1992-11-10 | 1994-05-26 | Motorola, Inc. | Switching regulator and amplifier system |
US5461557A (en) * | 1992-09-02 | 1995-10-24 | Nec Corporation | Voltage converting circuit and multiphase clock generating circuit used for driving the same |
US6535399B2 (en) * | 2001-08-14 | 2003-03-18 | Bose Corporation | Tracking power supply controlling |
CN1722611A (zh) * | 2004-07-14 | 2006-01-18 | 株式会社东芝 | 音频信号处理装置和音频信号处理方法 |
CN101009714A (zh) * | 2006-01-27 | 2007-08-01 | 马维尔国际贸易有限公司 | 可变功率适应性发射器 |
CN101507104A (zh) * | 2006-08-21 | 2009-08-12 | 美国思睿逻辑有限公司 | 高能效消费电子产品的音频功率输出级及其使用方法 |
Family Cites Families (106)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4077013A (en) * | 1976-06-04 | 1978-02-28 | Norlin Music, Incorporated | Audio power amplifier with automatic bias control |
JPS5564408A (en) * | 1978-11-10 | 1980-05-15 | Toshiba Corp | Sound volume controller serving as power switch |
JPS56131210A (en) * | 1980-03-18 | 1981-10-14 | Sanyo Electric Co Ltd | Power amplifying circuit |
JPS5917710A (ja) * | 1982-07-22 | 1984-01-30 | Toshiba Corp | 電力増幅器 |
JPS6157690U (zh) * | 1984-09-14 | 1986-04-18 | ||
EP0279694B1 (en) * | 1987-02-20 | 1992-04-29 | Victor Company Of Japan, Limited | Audio amplifier |
JPH039522U (zh) * | 1989-06-09 | 1991-01-29 | ||
JPH0353602A (ja) * | 1989-07-21 | 1991-03-07 | Hitachi Ltd | 増幅装置 |
US5059921A (en) * | 1990-07-27 | 1991-10-22 | Motorola Inc. | Amplifier having two operating modes |
US5229721A (en) * | 1992-04-06 | 1993-07-20 | Plantronics, Inc. | Micropower amplifier/transducer driver with signal expansion |
JP2648070B2 (ja) | 1992-06-29 | 1997-08-27 | ナショナル住宅産業株式会社 | 多孔質セラミック板の製法 |
GB2275384A (en) * | 1993-02-22 | 1994-08-24 | Thomson Consumer Electronics | Controlling amplifier power supply in dependence on signal level |
US5420536A (en) * | 1993-03-16 | 1995-05-30 | Victoria University Of Technology | Linearized power amplifier |
CA2109755C (en) * | 1993-11-23 | 2004-11-02 | John Barry French | Composite bridge amplifier with output overload and thermal protection |
US5631920A (en) * | 1993-11-29 | 1997-05-20 | Lexmark International, Inc. | Spread spectrum clock generator |
KR0150943B1 (ko) * | 1995-09-05 | 1998-09-15 | 한창산 | 인삼씨 파종기 |
US5834977A (en) * | 1995-10-31 | 1998-11-10 | Sanyo Electric Co., Ltd. | Amplifying circuit with power supply switching circuit |
US6130954A (en) * | 1996-01-02 | 2000-10-10 | Carver; Robert W. | High back-emf, high pressure subwoofer having small volume cabinet, low frequency cutoff and pressure resistant surround |
JPH09214261A (ja) * | 1996-02-01 | 1997-08-15 | Hitachi Ltd | 電力増幅回路 |
JPH09266426A (ja) * | 1996-03-28 | 1997-10-07 | Aiwa Co Ltd | 電力増幅器 |
US5898340A (en) * | 1996-11-20 | 1999-04-27 | Chatterjee; Manjirnath A. | High power efficiency audio amplifier with digital audio and volume inputs |
US5880638A (en) * | 1997-03-20 | 1999-03-09 | Maxim Integrated Products | Rail-to-rail operational amplifier and method for making same |
JP3508813B2 (ja) * | 1997-06-27 | 2004-03-22 | 株式会社ケンウッド | A級アンプのアイドリング調整回路 |
JP3180898B2 (ja) * | 1997-11-14 | 2001-06-25 | 日本電気株式会社 | 昇圧回路 |
US5929702A (en) * | 1997-11-28 | 1999-07-27 | Motorola, Inc. | Method and apparatus for high efficiency high dynamic range power amplification |
DE69939801D1 (de) * | 1998-04-24 | 2008-12-11 | Nxp Bv | Kombinierter kapazitiver aufwärts/abwärtswandler |
JP3913364B2 (ja) * | 1998-07-24 | 2007-05-09 | 三洋電機株式会社 | 増幅回路 |
IT1308597B1 (it) * | 1999-02-10 | 2002-01-08 | St Microelectronics Srl | Circuito elevatore di tensione continua per l'alimentazione di unapparecchio a batteria |
US6677819B1 (en) * | 1999-03-12 | 2004-01-13 | Nokia Corporation | Power amplifier unit |
WO2000072546A1 (fr) * | 1999-05-21 | 2000-11-30 | Fujitsu Limited | Appareil de transmission de signaux |
US6310789B1 (en) * | 1999-06-25 | 2001-10-30 | The Procter & Gamble Company | Dynamically-controlled, intrinsically regulated charge pump power converter |
US6349216B1 (en) * | 1999-07-22 | 2002-02-19 | Motorola, Inc. | Load envelope following amplifier system |
US6559722B1 (en) * | 1999-08-10 | 2003-05-06 | Anadigics, Inc. | Low bias current/temperature compensation current mirror for linear power amplifier |
EP1120901A1 (en) * | 2000-01-24 | 2001-08-01 | Telefonaktiebolaget Lm Ericsson | Line driver |
GB2360410A (en) * | 2000-03-18 | 2001-09-19 | Univ Bristol | An amplifier in which the input signal is delayed to allow time for the power supply to adjust to a level which minimises power loss |
US6633987B2 (en) * | 2000-03-24 | 2003-10-14 | Intel Corporation | Method and apparatus to implement the ACPI(advanced configuration and power interface) C3 state in a RDRAM based system |
US6717392B2 (en) * | 2000-05-30 | 2004-04-06 | Rádiodetection Limited | Signal generator |
AU2001276206A1 (en) * | 2000-07-12 | 2002-01-21 | Indigo Manufacturing Inc. | Power amplifier with multiple power supplies |
US6476673B2 (en) * | 2000-07-12 | 2002-11-05 | Monolithic Power Systems, Inc. | Class D audio amplifier |
US6816016B2 (en) * | 2000-08-10 | 2004-11-09 | Tropian, Inc. | High-efficiency modulating RF amplifier |
JP3475162B2 (ja) * | 2000-09-08 | 2003-12-08 | 三洋電機株式会社 | チャージポンプ回路 |
US6987851B1 (en) * | 2000-09-22 | 2006-01-17 | Ikanos Communication, Inc | Method and apparatus for a high efficiency line driver |
US6452716B1 (en) * | 2000-10-05 | 2002-09-17 | Nortel Networks Limited | Amplitude modulation of a pump laser signal in a distributed raman amplifier |
US6734724B1 (en) * | 2000-10-06 | 2004-05-11 | Tropian, Inc. | Power control and modulation of switched-mode power amplifiers with one or more stages |
GB0028689D0 (en) * | 2000-11-24 | 2001-01-10 | Qualcomm Uk Ltd | Amplifier circuit |
US6545533B2 (en) * | 2000-12-18 | 2003-04-08 | Texas Instruments Incorporated | Class D audio speaker amplifier circuit with pseudo noise modulation |
US6636103B2 (en) * | 2001-04-18 | 2003-10-21 | Analog Devices, Inc. | Amplifier system with on-demand power supply boost |
US6661683B2 (en) * | 2002-03-18 | 2003-12-09 | Texas Instruments Incorporated | Charge pump having very low voltage ripple |
US7277136B2 (en) * | 2001-08-23 | 2007-10-02 | Thomson Licensing | Adaptive bandwidth control in a kinescope amplifier |
JP2003079135A (ja) * | 2001-09-04 | 2003-03-14 | Shindengen Electric Mfg Co Ltd | Dc−dcコンバータ |
JP3691421B2 (ja) * | 2001-09-27 | 2005-09-07 | シャープ株式会社 | スイッチドキャパシタ型安定化電源回路 |
US6614310B2 (en) * | 2001-10-31 | 2003-09-02 | Texas Instruments Incorporated | Zero-overhead class G amplifier with threshold detection |
SE0104403D0 (sv) * | 2001-12-21 | 2001-12-21 | Bang & Olufsen Powerhouse As | Attenuation control for digital power converters |
US7183857B2 (en) * | 2002-01-24 | 2007-02-27 | Maxim Integrated Products Inc. | Single supply direct drive amplifier |
US6788151B2 (en) | 2002-02-06 | 2004-09-07 | Lucent Technologies Inc. | Variable output power supply |
JP2003234621A (ja) * | 2002-02-12 | 2003-08-22 | Alpine Electronics Inc | オーディオ装置 |
US7130415B2 (en) * | 2002-06-28 | 2006-10-31 | Texas Instruments Incorporated | Line Driver apparatus |
US20060012434A1 (en) | 2002-09-19 | 2006-01-19 | Mitsubishi Denki Kabushiki Kaisha | Variable gain amplifier |
JP3741100B2 (ja) * | 2002-11-26 | 2006-02-01 | セイコーエプソン株式会社 | 電源回路及び半導体集積回路 |
GB2398648B (en) * | 2003-02-19 | 2005-11-09 | Nujira Ltd | Power supply stage for an amplifier |
JP4072765B2 (ja) * | 2003-05-12 | 2008-04-09 | 日本ビクター株式会社 | 電力増幅回路 |
JP2004343414A (ja) * | 2003-05-15 | 2004-12-02 | Sharp Corp | オーディオ機器 |
JP2004343413A (ja) * | 2003-05-15 | 2004-12-02 | Sharp Corp | オーディオ機器 |
JP2004363867A (ja) * | 2003-06-04 | 2004-12-24 | Alps Electric Co Ltd | 送信回路 |
US6853244B2 (en) * | 2003-06-24 | 2005-02-08 | Northrop Grumman Corproation | Multi-mode multi-amplifier architecture |
CN1306690C (zh) * | 2003-07-30 | 2007-03-21 | 百利通电子(上海)有限公司 | 一种可对正负极分别充电的双电压电荷泵及其控制电路 |
JP3874747B2 (ja) * | 2003-08-08 | 2007-01-31 | 松下電器産業株式会社 | 送信装置、送信電力制御方法および無線通信装置 |
JP4589665B2 (ja) * | 2003-08-29 | 2010-12-01 | ルネサスエレクトロニクス株式会社 | 増幅器及びそれを用いた高周波電力増幅器 |
US8130043B2 (en) * | 2003-09-25 | 2012-03-06 | Anadigics, Inc. | Multi-stage power amplifier with enhanced efficiency |
US6894559B1 (en) * | 2003-09-30 | 2005-05-17 | Nortel Networks Limited | Modulated power supply |
JP2005136717A (ja) * | 2003-10-30 | 2005-05-26 | Victor Co Of Japan Ltd | デジタルアンプ装置 |
US7026868B2 (en) * | 2003-11-20 | 2006-04-11 | Northrop Grumman Corporation | Variable supply amplifier system |
US6995995B2 (en) * | 2003-12-03 | 2006-02-07 | Fairchild Semiconductor Corporation | Digital loop for regulating DC/DC converter with segmented switching |
US7339426B2 (en) * | 2004-03-19 | 2008-03-04 | Powerwave Technologies, Inc. | High efficiency linear amplifier employing dynamically controlled back off |
KR100595447B1 (ko) * | 2004-03-26 | 2006-07-03 | 삼성전자주식회사 | Dc-dc 컨버터 및 그 제어방법 |
TR201901008T4 (tr) | 2004-03-31 | 2019-02-21 | Ericsson Telefon Ab L M | Paralel yerleştirilen güç kaynakları. |
US7929637B2 (en) * | 2004-06-04 | 2011-04-19 | Texas Instruments Incorporated | Method and apparatus for digital amplitude and phase modulation |
TWI232024B (en) * | 2004-06-28 | 2005-05-01 | Realtek Semiconductor Corp | Amplifying circuit with variable supply voltage |
US7157963B1 (en) * | 2004-07-08 | 2007-01-02 | Nortel Networks Limited | Methods and apparatus for controlling the output voltage of a switched-mode power supply |
US20060050902A1 (en) * | 2004-09-07 | 2006-03-09 | Galax Multimedia Co., Ltd. | Portable audio playing device |
US7359680B2 (en) * | 2004-09-14 | 2008-04-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Delay calibration in polar modulation transmitters |
CN101036281A (zh) * | 2004-10-19 | 2007-09-12 | 罗姆股份有限公司 | 开关电源装置和使用它的电子设备 |
TWI283968B (en) * | 2004-12-02 | 2007-07-11 | Via Tech Inc | Low noise charge pump for PLL-based frequence synthesis |
TWI293828B (en) * | 2005-04-28 | 2008-02-21 | Novatek Microelectronics Corp | Charge pump |
US7498876B2 (en) * | 2005-06-20 | 2009-03-03 | Agere Systems Inc. | Amplifier having half-wave tracking power rails |
EP1770855B1 (en) * | 2005-09-28 | 2011-08-17 | Yamaha Corporation | Class D amplifier |
US7834707B2 (en) * | 2005-10-31 | 2010-11-16 | Broadcom Corporation | Linearized charge pump having an offset |
JP4637725B2 (ja) * | 2005-11-11 | 2011-02-23 | ソニー株式会社 | 音声信号処理装置、音声信号処理方法、プログラム |
ITMI20052196A1 (it) | 2005-11-16 | 2007-05-17 | Eurisko Nop World S R L | Metodo e sistema per la comparazione di segnali audio e l'identificazione di una sorgente sonora |
JP2007150872A (ja) * | 2005-11-29 | 2007-06-14 | Matsushita Electric Ind Co Ltd | 信号出力回路及び通信装置 |
US7835710B2 (en) * | 2006-01-27 | 2010-11-16 | Marvell World Trade Ltd. | Variable power adaptive transmitter |
US8081777B2 (en) * | 2006-03-21 | 2011-12-20 | Fairchild Semiconductor Corporation | Volume-based adaptive biasing |
TW200744316A (en) * | 2006-05-16 | 2007-12-01 | Richtek Techohnology Corp | Control circuit of switching mode of charge pump and the method thereof |
GB2446843B (en) * | 2006-06-30 | 2011-09-07 | Wolfson Microelectronics Plc | Amplifier circuit and methods of operation thereof |
US8311243B2 (en) * | 2006-08-21 | 2012-11-13 | Cirrus Logic, Inc. | Energy-efficient consumer device audio power output stage |
CN100483908C (zh) * | 2006-09-11 | 2009-04-29 | 天津英诺华微电子技术有限公司 | 脉冲频率调制型dc/dc升压转换器 |
US7830220B2 (en) * | 2006-09-26 | 2010-11-09 | Infineon Technologies Ag | Modulator arrangement and method for signal modulation |
GB2444984B (en) * | 2006-12-22 | 2011-07-13 | Wolfson Microelectronics Plc | Charge pump circuit and methods of operation thereof |
JP2008271471A (ja) * | 2007-04-25 | 2008-11-06 | Sanyo Electric Co Ltd | チャージポンプ回路 |
WO2009005768A1 (en) * | 2007-06-28 | 2009-01-08 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification |
JP5136834B2 (ja) * | 2007-10-16 | 2013-02-06 | 株式会社村田製作所 | Rf電力増幅装置およびrf電力増幅器の電源電圧を制御する電源供給回路 |
GB2455524B (en) * | 2007-12-11 | 2010-04-07 | Wolfson Microelectronics Plc | Charge pump circuit and methods of operation thereof and portable audio apparatus including charge pump circuits |
US7830209B1 (en) * | 2009-01-19 | 2010-11-09 | Cirrus Logic, Inc. | Signal level selected efficiency in a charge pump power supply for a consumer device audio power output stage |
US8519788B2 (en) * | 2010-04-19 | 2013-08-27 | Rf Micro Devices, Inc. | Boost charge-pump with fractional ratio and offset loop for supply modulation |
US8542061B2 (en) * | 2010-04-20 | 2013-09-24 | Rf Micro Devices, Inc. | Charge pump based power amplifier envelope power supply and bias power supply |
US8913971B2 (en) * | 2010-04-20 | 2014-12-16 | Rf Micro Devices, Inc. | Selecting PA bias levels of RF PA circuitry during a multislot burst |
-
2007
- 2007-08-03 GB GBGB0715254.9A patent/GB0715254D0/en not_active Ceased
- 2007-08-30 GB GB0716923.8A patent/GB2451528B/en active Active
- 2007-08-30 GB GB0716926.1A patent/GB2451529B/en active Active
- 2007-08-30 GB GB0716919.6A patent/GB2451525B/en active Active
- 2007-08-30 GB GB0716917.0A patent/GB2451524B/en active Active
- 2007-08-30 GB GB0716922.0A patent/GB2451527B/en active Active
- 2007-08-30 GB GB0716920.4A patent/GB2451526B/en active Active
- 2007-10-31 GB GB0721431.5A patent/GB2451530B/en active Active
-
2008
- 2008-04-09 GB GB0806471A patent/GB2451536B/en active Active
- 2008-08-04 CN CN200880108519.4A patent/CN101809862B/zh active Active
- 2008-08-04 KR KR1020137031098A patent/KR101466935B1/ko active IP Right Grant
- 2008-08-04 WO PCT/GB2008/002644 patent/WO2009019460A1/en active Application Filing
- 2008-08-04 TW TW097129504A patent/TWI465034B/zh active
- 2008-08-04 CN CN201410345051.8A patent/CN104135235B/zh active Active
- 2008-08-04 US US12/671,656 patent/US8198941B2/en active Active
- 2008-08-04 TW TW097129502A patent/TWI458257B/zh active
- 2008-08-04 CA CA2711022A patent/CA2711022C/en active Active
- 2008-08-04 CN CN200880110115.9A patent/CN101828333B/zh active Active
- 2008-08-04 WO PCT/GB2008/002641 patent/WO2009019459A1/en active Application Filing
- 2008-08-04 EP EP12194839.2A patent/EP2568599B1/en not_active Not-in-force
- 2008-08-04 CN CN201510686674.6A patent/CN105281676B/zh active Active
- 2008-08-04 US US12/671,639 patent/US8687826B2/en active Active
- 2008-08-04 KR KR1020107004561A patent/KR101467508B1/ko active IP Right Grant
- 2008-08-04 EP EP08776120.1A patent/EP2181500B1/en active Active
- 2008-08-04 JP JP2010518745A patent/JP2010536197A/ja active Pending
-
2012
- 2012-06-06 US US13/490,070 patent/US8514025B2/en active Active
-
2013
- 2013-03-11 JP JP2013048184A patent/JP5539557B2/ja not_active Expired - Fee Related
- 2013-07-15 US US13/942,303 patent/US8988149B2/en active Active
-
2014
- 2014-02-18 US US14/182,445 patent/US9473098B2/en active Active
-
2015
- 2015-02-19 US US14/626,468 patent/US9252729B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5461557A (en) * | 1992-09-02 | 1995-10-24 | Nec Corporation | Voltage converting circuit and multiphase clock generating circuit used for driving the same |
WO1994011799A1 (en) * | 1992-11-10 | 1994-05-26 | Motorola, Inc. | Switching regulator and amplifier system |
US6535399B2 (en) * | 2001-08-14 | 2003-03-18 | Bose Corporation | Tracking power supply controlling |
CN1722611A (zh) * | 2004-07-14 | 2006-01-18 | 株式会社东芝 | 音频信号处理装置和音频信号处理方法 |
CN101009714A (zh) * | 2006-01-27 | 2007-08-01 | 马维尔国际贸易有限公司 | 可变功率适应性发射器 |
CN101507104A (zh) * | 2006-08-21 | 2009-08-12 | 美国思睿逻辑有限公司 | 高能效消费电子产品的音频功率输出级及其使用方法 |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101809862B (zh) | 放大器电路 | |
US8103021B2 (en) | Audio reproducing apparatus | |
US11798978B2 (en) | On-chip inductor with audio headphone amplifier |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
C41 | Transfer of patent application or patent right or utility model | ||
CB02 | Change of applicant information |
Address after: Edinburgh Applicant after: Hongkong Semiconductor Co.,Ltd. Address before: Edinburgh Applicant before: Wolfson Microelectronics PLC Address after: Edinburgh Applicant after: Wolfson Microelectronics PLC Address before: Edinburgh Applicant before: WOLFSON MICROELECTRONICS PLC |
|
COR | Change of bibliographic data | ||
GR01 | Patent grant | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20151103 Address after: Edinburgh Applicant after: CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR Ltd. Address before: Edinburgh Applicant before: Hongkong Semiconductor Co.,Ltd. |