BR9803545A - Transmissor que possui uma eficiência melhorada adicionada à energia e um rádio que usa o mesmo. - Google Patents
Transmissor que possui uma eficiência melhorada adicionada à energia e um rádio que usa o mesmo.Info
- Publication number
- BR9803545A BR9803545A BR9803545-2A BR9803545A BR9803545A BR 9803545 A BR9803545 A BR 9803545A BR 9803545 A BR9803545 A BR 9803545A BR 9803545 A BR9803545 A BR 9803545A
- Authority
- BR
- Brazil
- Prior art keywords
- level
- transmitter
- radio
- energy
- voltage
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
-
- 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
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/045—Circuits with power amplifiers with means for improving efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
Abstract
"TRANSMISSOR QUE POSSUI UMA EFICIêNCIA MELHORADA ADICIONADA à ENERGIA E UM RáDIO QUE USA O MESMO". Um rádio (300) possui um transmissor (302) que compreende um amplificador de energia (308), um condicionador de voltagem (318), e um controlador (313). O amplificador de energia opera em um de uma pluralidade de níveis de energia de saída. Quando o nível de energia de saída é reduzido desde o máximo estabelecido uma determinação menor, o controlador ajusta um nível do sinal de controle fornecido ao condionador de voltagem. A modificação no nível do sinal de controle seleciona uma voltagem de saída menor desde o condicionador de voltagem, a qual é fornecida ao amplificador de energia. Ajustando seletivamente o nível de voltagem fornecido ao amplificador de energia, a eficiência adicionada à energia é mantida em um nível ótimo.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US92512897A | 1997-09-08 | 1997-09-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9803545A true BR9803545A (pt) | 1999-11-03 |
Family
ID=25451265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9803545-2A BR9803545A (pt) | 1997-09-08 | 1998-09-04 | Transmissor que possui uma eficiência melhorada adicionada à energia e um rádio que usa o mesmo. |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN1215260A (pt) |
BR (1) | BR9803545A (pt) |
DE (1) | DE19840092A1 (pt) |
FR (1) | FR2768277A1 (pt) |
GB (1) | GB2329087A (pt) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7058374B2 (en) * | 2002-10-15 | 2006-06-06 | Skyworks Solutions, Inc. | Low noise switching voltage regulator |
GB0625942D0 (en) | 2006-12-27 | 2007-02-07 | Nokia Corp | Switched mode power supply for a transmitter |
CN101114860B (zh) * | 2007-08-17 | 2011-04-06 | 华为技术有限公司 | 一种控制功率放大的方法及装置 |
CN101938258B (zh) | 2010-08-27 | 2013-06-05 | 华为终端有限公司 | 一种控制射频功率放大器发射信号的方法和装置 |
US9502756B2 (en) | 2013-09-19 | 2016-11-22 | Rohm Co., Ltd. | Antenna driving device |
CN106533461B (zh) * | 2016-11-11 | 2019-03-15 | 苏州能讯高能半导体有限公司 | 一种基站发射系统 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4935705A (en) * | 1988-12-29 | 1990-06-19 | Motorola, Inc. | High efficiency variable power amplifier |
US5119042A (en) * | 1990-08-30 | 1992-06-02 | Hughes Aircraft Company | Solid state power amplifier with dynamically adjusted operating point |
JP3033623B2 (ja) * | 1990-11-30 | 2000-04-17 | 日本電気株式会社 | ゲートバイアス制御回路および増幅器 |
US5589796A (en) * | 1994-11-01 | 1996-12-31 | Motorola, Inc | Method and apparatus for increasing amplifier efficiency |
US5724005A (en) * | 1996-04-25 | 1998-03-03 | Lucent Technologies Inc. | Linear power amplifier with automatic gate/base bias control for optimum efficiency |
GB2316561B (en) * | 1996-08-22 | 2001-01-03 | Motorola Ltd | Improved power amplifier and related method |
-
1998
- 1998-08-25 GB GB9818429A patent/GB2329087A/en not_active Withdrawn
- 1998-09-02 FR FR9810957A patent/FR2768277A1/fr not_active Withdrawn
- 1998-09-03 DE DE19840092A patent/DE19840092A1/de not_active Withdrawn
- 1998-09-04 BR BR9803545-2A patent/BR9803545A/pt not_active Application Discontinuation
- 1998-09-07 CN CN98118890A patent/CN1215260A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
GB9818429D0 (en) | 1998-10-21 |
CN1215260A (zh) | 1999-04-28 |
GB2329087A (en) | 1999-03-10 |
FR2768277A1 (fr) | 1999-03-12 |
DE19840092A1 (de) | 1999-03-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA10 | Dismissal: dismissal - article 33 of industrial property law | ||
B15K | Others concerning applications: alteration of classification |
Ipc: H03F 1/02 (2006.01), H03F 3/24 (2006.0 |