ES2067728T3 - Dispositivo transmisor para señales moduladas digitalmente. - Google Patents
Dispositivo transmisor para señales moduladas digitalmente.Info
- Publication number
- ES2067728T3 ES2067728T3 ES90850038T ES90850038T ES2067728T3 ES 2067728 T3 ES2067728 T3 ES 2067728T3 ES 90850038 T ES90850038 T ES 90850038T ES 90850038 T ES90850038 T ES 90850038T ES 2067728 T3 ES2067728 T3 ES 2067728T3
- Authority
- ES
- Spain
- Prior art keywords
- modulated signals
- transmitter device
- control
- digital modulated
- information
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
- H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
- Radar Systems Or Details Thereof (AREA)
- Closed-Circuit Television Systems (AREA)
- Burglar Alarm Systems (AREA)
- Feedback Control In General (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
UN DISPOSITIVO TRANSMISOR DE RADIO POR EJEMPLO SEÑALES QAM QUE SE COMPONEN DE UN APLIFICADOR (AMP) DE TRANSISTOR DE SALIDA DE CLASE C. EL GENERADOR DE LA TENSION DE CONTROL (GTC) INCLUYE UNA MEMORIA, EN QUE LAS SEÑALES I,Q (I,Q) DE LA SEÑAL DE MODULACION DIRECCIONAN LA TENSION DE CONTROL DEL GENERADOR (GEN), CUYA INFORMACION SE UTILIZA COMO SEÑAL DE CONTROL (SC) QUE ACTUA COMO TENSION DE COLECTOR PARA CONTROLAR EL NIVEL DE SALIDA DEL AMPLIFICADOR (RF). LA INFORMACION PUEDE MODIFICARSE PARA COMPENSAR LAS VARIACIONES DE TEMPERATURA Y OTRAS NO LINEALIDADES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/308,245 US5091919A (en) | 1989-02-08 | 1989-02-08 | Transmitter arrangement for digitally modulated signals |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2067728T3 true ES2067728T3 (es) | 1995-04-01 |
Family
ID=23193178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90850038T Expired - Lifetime ES2067728T3 (es) | 1989-02-08 | 1990-01-26 | Dispositivo transmisor para señales moduladas digitalmente. |
Country Status (6)
Country | Link |
---|---|
US (1) | US5091919A (es) |
EP (1) | EP0382695B1 (es) |
JP (1) | JP3195337B2 (es) |
AT (1) | ATE114913T1 (es) |
DE (1) | DE69014338T2 (es) |
ES (1) | ES2067728T3 (es) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2021217C (en) * | 1989-07-18 | 1994-11-01 | Akira Ishikura | Radio communication apparatus having a function for displaying reception field strength and method of controlling the apparatus |
FI83717C (fi) * | 1989-09-25 | 1991-08-12 | Nokia Mobile Phones Ltd | Foerfarande foer intrimning och kompensation av effektnivaoer i en radiotelefon. |
JPH03188784A (ja) * | 1989-12-19 | 1991-08-16 | Toshiba Corp | ケーブルテレビジョンシステムの上りデータ通信信号制御装置 |
KR930009458B1 (ko) * | 1991-01-25 | 1993-10-04 | 삼성전자 주식회사 | 차량 추적 장치에 있어서 송신메세지 신호발생방법 및 회로 |
FI89993C (fi) * | 1991-05-31 | 1993-12-10 | Nokia Mobile Phones Ltd | Programmering av installationsdata i en mobiltelefon |
GB2281461A (en) * | 1993-08-27 | 1995-03-01 | Nokia Telecommunications Oy | Control of output power in radio transmitters using look-up table |
US5524285A (en) * | 1993-11-02 | 1996-06-04 | Wray; Anthony J. | Radio transmitter with power amplifier and linearization |
US5430416A (en) * | 1994-02-23 | 1995-07-04 | Motorola | Power amplifier having nested amplitude modulation controller and phase modulation controller |
FI97179C (fi) * | 1994-06-15 | 1996-10-25 | Nokia Mobile Phones Ltd | Pulssitetun lähettimen lähtötehon säätö ja tehon verhokäyrän muotoilu |
GB2296145B (en) * | 1994-12-15 | 1999-09-22 | Nokia Mobile Phones Ltd | Radio transmitters and methods of operation |
FI98020C (fi) * | 1995-06-06 | 1997-03-25 | Nokia Mobile Phones Ltd | Digitaalisen signaalin modulointimenetelmä ja modulaattori |
US5903823A (en) * | 1995-09-19 | 1999-05-11 | Fujitsu Limited | Radio apparatus with distortion compensating function |
FI101117B (fi) * | 1995-09-22 | 1998-04-15 | Nokia Mobile Phones Ltd | Aikajakoisessa radiopuhelinjärjestelmässä toimiva radiopuhelin |
US5796784A (en) * | 1996-03-27 | 1998-08-18 | Motorola, Inc. | Method and apparatus for modifying amplitude of at least one symbol |
FI112133B (fi) * | 1996-03-29 | 2003-10-31 | Nokia Corp | Menetelmä kahdella eri taajuuusalueella toimivan radioviestinjärjestelmän suoramuunnoslähetin/vastaanottimen taajuuksien muodostamiseksi ja kahdella taajuusalueella toimivan radioviestinjärjestelmänsuoramuunnoslähetin/vastaanotin sekä edellisten käyttö matkaviestimessä |
FI100286B (fi) * | 1996-04-01 | 1997-10-31 | Nokia Mobile Phones Ltd | Lähetin/vastaanotin RF-signaalin lähettämiseksi ja vastaanottamiseksi kahdella taajuusalueella |
JP3024548B2 (ja) * | 1996-04-26 | 2000-03-21 | 日本電気株式会社 | 位相変調方法および位相変調装置 |
FI106413B (fi) * | 1996-07-11 | 2001-01-31 | Nokia Mobile Phones Ltd | Lineaarisen tehovahvistimen tehonsäätöpiiri |
FI117841B (fi) * | 1996-07-18 | 2007-03-15 | Nokia Corp | Järjestely radiotaajuisen signaalin lähettämiseksi ja vastaanottamiseksi kahdella taajuusalueella |
FI963389A (fi) * | 1996-08-30 | 1998-03-01 | Nokia Mobile Phones Ltd | Käsipuhelimen opastusjärjestelmä |
US5896421A (en) * | 1996-09-25 | 1999-04-20 | Hughes Electronics Corporation | Use of low pass filter and equalizer for noise reduction in direct up-conversion schemes |
FI106759B (fi) | 1996-11-13 | 2001-03-30 | Nokia Mobile Phones Ltd | Matkaviestimen lähetystehon rajoitinjärjestelmä |
GB2320864B (en) | 1996-12-31 | 2001-07-11 | Nokia Mobile Phones Ltd | Signal Offset Elimination |
FI107658B (fi) * | 1997-06-02 | 2001-09-14 | Nokia Mobile Phones Ltd | Biasjänniteohjattuja rinnakkaisia aktiivikomponentteja |
FI104133B (fi) | 1997-11-28 | 1999-11-15 | Nokia Mobile Phones Ltd | Koodaus- ja modulointimenetelmä ja laite sen soveltamiseksi |
GB2345212B (en) * | 1997-12-31 | 2000-11-29 | Motorola Inc | Device having a tracking power converter for providing a linear power amplifier |
FI106607B (fi) | 1998-01-07 | 2001-02-28 | Nokia Mobile Phones Ltd | Solun valinta usean modulaation solukkoradiojärjestelmässä |
FI981518A (fi) | 1998-07-01 | 2000-01-02 | Nokia Mobile Phones Ltd | Tiedonsiirtomenetelmä ja radiojärjestelmä |
FI106491B (fi) | 1998-08-12 | 2001-02-15 | Nokia Mobile Phones Ltd | Menetelmä ja laitteisto radiorajapinnan datanopeuden saumattomaksi muuttamiseksi piirikytketyssä välityksessä |
US6590940B1 (en) | 1999-05-17 | 2003-07-08 | Ericsson Inc. | Power modulation systems and methods that separately amplify low and high frequency portions of an amplitude waveform |
US6876697B2 (en) * | 2000-12-12 | 2005-04-05 | Sierra Wireless, Inc. | Apparatus and method for power ramp up of wireless modem transmitter |
US7020070B2 (en) | 2001-04-10 | 2006-03-28 | Telefonaktiebolaget L M Ericsson (Publ) | Selectively controlled modulation distortion of an IQ-baseband signal |
US7706467B2 (en) | 2004-12-17 | 2010-04-27 | Andrew Llc | Transmitter with an envelope tracking power amplifier utilizing digital predistortion of the signal envelope |
US7546137B2 (en) | 2005-02-28 | 2009-06-09 | Sirit Technologies Inc. | Power control loop and LO generation method |
US20070066224A1 (en) * | 2005-02-28 | 2007-03-22 | Sirit, Inc. | High efficiency RF amplifier and envelope modulator |
EP2022168B1 (en) * | 2006-05-05 | 2018-09-05 | Astrium Limited | Rf power amplifiers |
FI20065783A0 (sv) * | 2006-12-08 | 2006-12-08 | Nokia Corp | Signalfördistorsion i radiosändare |
US9276656B2 (en) * | 2007-02-19 | 2016-03-01 | Corning Optical Communications Wireless Ltd | Method and system for improving uplink performance |
US8483631B2 (en) * | 2008-09-10 | 2013-07-09 | Qualcomm Incorporated | Method and apparatus for predistorting a waveform for input to an amplifier |
US9100033B2 (en) | 2013-12-20 | 2015-08-04 | Motorola Solutions, Inc. | Systems and methods for using a digital power amplifier controller (DPAC) having foward-loop correction and feedback-loop correction |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2705775A (en) * | 1952-03-27 | 1955-04-05 | Murray G Crosby | Modulated wave amplifier |
US3900823A (en) * | 1973-03-28 | 1975-08-19 | Nathan O Sokal | Amplifying and processing apparatus for modulated carrier signals |
GB1480400A (en) * | 1974-07-13 | 1977-07-20 | Marconi Instruments Ltd | Signal generators |
US4146847A (en) * | 1976-11-05 | 1979-03-27 | Trio Kabushiki Kaisha | Power limiting circuitry for use with power amplifier |
US4291277A (en) * | 1979-05-16 | 1981-09-22 | Harris Corporation | Adaptive predistortion technique for linearizing a power amplifier for digital data systems |
US4276514A (en) * | 1979-07-09 | 1981-06-30 | Trw Inc. | Wideband, phase compensated amplifier with negative feedback of distortion components in the output signal |
US4412337A (en) * | 1981-11-04 | 1983-10-25 | Motorola Inc. | Power amplifier and envelope correction circuitry |
US4462001A (en) * | 1982-02-22 | 1984-07-24 | Canadian Patents & Development Limited | Baseband linearizer for wideband, high power, nonlinear amplifiers |
JPS5999851A (ja) * | 1982-11-29 | 1984-06-08 | Nec Corp | 信号制御回路 |
GB8403067D0 (en) * | 1984-02-06 | 1984-03-07 | Indep Broadcasting Authority | Broadcast signal transmitters |
US4706262A (en) * | 1984-03-30 | 1987-11-10 | Nec Corporation | FSK or FM burst signal generating apparatus |
US4564816A (en) * | 1984-05-09 | 1986-01-14 | Rca Corporation | Predistortion circuit |
FR2564658B1 (fr) * | 1984-05-21 | 1990-11-30 | Centre Nat Etd Spatiales | Dispositif de linearisation du gain d'un amplificateur de puissance a transistor bipolaire polarise en classe c |
US4700151A (en) * | 1985-03-20 | 1987-10-13 | Nec Corporation | Modulation system capable of improving a transmission system |
US4819268A (en) * | 1987-08-17 | 1989-04-04 | Kahn Leonard R | Transmitter having means for controlling undesired out-of-band radiation |
-
1989
- 1989-02-08 US US07/308,245 patent/US5091919A/en not_active Expired - Lifetime
-
1990
- 1990-01-26 ES ES90850038T patent/ES2067728T3/es not_active Expired - Lifetime
- 1990-01-26 AT AT90850038T patent/ATE114913T1/de not_active IP Right Cessation
- 1990-01-26 EP EP90850038A patent/EP0382695B1/en not_active Expired - Lifetime
- 1990-01-26 DE DE69014338T patent/DE69014338T2/de not_active Expired - Lifetime
- 1990-02-07 JP JP02621490A patent/JP3195337B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5091919A (en) | 1992-02-25 |
EP0382695B1 (en) | 1994-11-30 |
JP3195337B2 (ja) | 2001-08-06 |
EP0382695A3 (en) | 1991-01-02 |
ATE114913T1 (de) | 1994-12-15 |
EP0382695A2 (en) | 1990-08-16 |
DE69014338D1 (de) | 1995-01-12 |
JPH0340543A (ja) | 1991-02-21 |
DE69014338T2 (de) | 1995-07-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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