ATE424653T1 - Frequenzmodulator unter verwendung eines phasenregelkreises - Google Patents
Frequenzmodulator unter verwendung eines phasenregelkreisesInfo
- Publication number
- ATE424653T1 ATE424653T1 AT01400914T AT01400914T ATE424653T1 AT E424653 T1 ATE424653 T1 AT E424653T1 AT 01400914 T AT01400914 T AT 01400914T AT 01400914 T AT01400914 T AT 01400914T AT E424653 T1 ATE424653 T1 AT E424653T1
- Authority
- AT
- Austria
- Prior art keywords
- signal
- phase
- locked loop
- outputs
- frequency modulator
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0983—Modifications of modulator for regulating the mean frequency using a phase locked loop containing in the loop a mixer other than for phase detection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0966—Modifications of modulator for regulating the mean frequency using a phase locked loop modulating the reference clock
Landscapes
- Transmitters (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01400914A EP1249929B1 (de) | 2001-04-09 | 2001-04-09 | Frequenzmodulator unter Verwendung eines Phasenregelkreises |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE424653T1 true ATE424653T1 (de) | 2009-03-15 |
Family
ID=37459341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT01400914T ATE424653T1 (de) | 2001-04-09 | 2001-04-09 | Frequenzmodulator unter verwendung eines phasenregelkreises |
Country Status (4)
Country | Link |
---|---|
US (1) | US7136626B2 (de) |
EP (1) | EP1249929B1 (de) |
AT (1) | ATE424653T1 (de) |
DE (1) | DE60137833D1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060071721A1 (en) * | 2004-10-01 | 2006-04-06 | Texas Instruments Incorporated | Reducing size of capacitors in filters |
JP4126043B2 (ja) * | 2004-12-13 | 2008-07-30 | 株式会社東芝 | 位相復調器および携帯電話装置 |
IL176231A (en) * | 2005-06-14 | 2010-12-30 | Given Imaging Ltd | Modulator and method for producing a modulated signal |
US7420433B2 (en) * | 2005-11-17 | 2008-09-02 | Analog Devices, Inc. | Phase lock loop RF modulator system |
US9191250B2 (en) | 2013-11-26 | 2015-11-17 | Blackberry Limited | Extended bandwidth adaptive digital pre-distortion with reconfigurable analog front-ends |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH600706A5 (de) * | 1976-09-28 | 1978-06-30 | Patelhold Patentverwertung | |
FR2537805B1 (fr) * | 1982-12-14 | 1986-01-24 | Thomson Csf | Dispositif de linearisation automatique de la caracteristique frequence-signal de commande, d'un oscillateur a frequence variable module en frequence |
US4755774A (en) * | 1985-07-15 | 1988-07-05 | Motorola Inc. | Two-port synthesizer modulation system employing an improved reference phase modulator |
FR2746564B1 (fr) * | 1996-03-22 | 1998-06-05 | Matra Communication | Procede pour corriger des non-linearites d'un amplificateur, et emetteur radio mettant en oeuvre un tel procede |
US6731713B1 (en) * | 1996-07-17 | 2004-05-04 | Intermec Ip Corp. | Method and apparatus for reducing RF emission levels in a portable electronic device |
US5894496A (en) * | 1996-09-16 | 1999-04-13 | Ericsson Inc. | Method and apparatus for detecting and compensating for undesired phase shift in a radio transceiver |
US5920808A (en) * | 1996-12-12 | 1999-07-06 | Glenayre Electronics, Inc. | Method and apparatus for reducing key-up distortion by pre-heating transistors |
US5834985A (en) * | 1996-12-20 | 1998-11-10 | Telefonaktiebolaget L M Ericsson (Publ) | Digital continuous phase modulation for a DDS-driven phase locked loop |
US6046646A (en) * | 1997-06-13 | 2000-04-04 | Lo; Pedro W. | Modulation of a phase locked loop for spreading the spectrum of an output clock signal |
US5834987A (en) * | 1997-07-30 | 1998-11-10 | Ercisson Inc. | Frequency synthesizer systems and methods for three-point modulation with a DC response |
US5952895A (en) * | 1998-02-23 | 1999-09-14 | Tropian, Inc. | Direct digital synthesis of precise, stable angle modulated RF signal |
US6449466B1 (en) * | 1998-12-30 | 2002-09-10 | Samsung Electronics Co., Ltd. | Adaptive digital pre-distortion correction circuit for use in a transmitter in a digital communication system and method of operation |
US6298093B1 (en) * | 1999-08-05 | 2001-10-02 | Raytheon Company | Apparatus and method for phase and frequency digital modulation |
US6384677B2 (en) * | 2000-01-28 | 2002-05-07 | Hitachi Kokusai Electric Inc. | Power amplifier having negative feedback circuit for transmitter |
US6678503B1 (en) * | 2000-05-17 | 2004-01-13 | Intersil Americas Inc. | Apparatus for radio frequency processing with dual modulus synthesizer |
US6734749B2 (en) * | 2001-05-29 | 2004-05-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Direct modulated phase-locked loop |
-
2001
- 2001-04-09 DE DE60137833T patent/DE60137833D1/de not_active Expired - Lifetime
- 2001-04-09 EP EP01400914A patent/EP1249929B1/de not_active Expired - Lifetime
- 2001-04-09 AT AT01400914T patent/ATE424653T1/de not_active IP Right Cessation
-
2002
- 2002-02-08 US US10/071,919 patent/US7136626B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1249929A1 (de) | 2002-10-16 |
US20030153286A1 (en) | 2003-08-14 |
DE60137833D1 (de) | 2009-04-16 |
EP1249929B1 (de) | 2009-03-04 |
US7136626B2 (en) | 2006-11-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4198467B2 (ja) | 振幅および位相変調を行う方法および装置 | |
KR100193862B1 (ko) | 안정된 주파수를 얻기 위한 주파수변환기 | |
EP1345375A3 (de) | Verfahren und Einrichtung zur Frequenzmodulation | |
WO1998028852A3 (en) | Continuous phase modulator, comprising a direct digital synthesizer followed by a phase locked loop | |
EP1583224A4 (de) | Modulator und korrekturverfahren dafür | |
CA2081400A1 (en) | Frequency synthesis using frequency controlled carrier modulated with pll feedback signal | |
TW428372B (en) | Direct digital synthesis of precise, stable angle modulated RF signal | |
AU2003207487A1 (en) | Low-jitter loop filter for a phase-locked loop system | |
ATE289458T1 (de) | Frequenzmodulator unter verwendung eines digitalen filters zur wellenformung beim basisband | |
WO2003032493A3 (de) | Abgleichverfahren für eine nach dem zwei-punkt-prinzip arbeitende pll-schaltung und pll-schaltung mit einer abgleichvorrichtung | |
EP1657813A4 (de) | Breitband-modulations-pll-zeitfehler-korrektursystem eines breitband-modulations-pll, modulations-zeitfehlerkorrekturverfahren und verfahren zur einstellung eines funkkommunikationsvorrichtung mit breitband-modulations-pll | |
ATE424653T1 (de) | Frequenzmodulator unter verwendung eines phasenregelkreises | |
CN1446423A (zh) | 用于发射机或收发信机中的载波调制器 | |
WO2000036742A3 (en) | Phase modulating transmitter | |
DE60102237D1 (de) | Modulator unter verwendung digitaler synthese | |
HK1101863A1 (en) | A phase locked loop that sets gain automatically | |
EP1168648A3 (de) | Funknachrichtengerät | |
JP4029115B2 (ja) | 信号位相同期装置および信号位相同期方法 | |
RU2008110047A (ru) | Модулятор с двумя портами | |
KR101054215B1 (ko) | 위상 변조기 및 환경 변화에 따른 성능 변화를 보상하는 위상 변조 방법 | |
JPH05268282A (ja) | 無線通信方式 | |
FR2793619B1 (fr) | Dispositif et procede pour produire un signal filtre ayant une frequence donnee et emetteur hertzien emettant a une frequence etablie par un oscillateur reglable en frequence | |
KR100296025B1 (ko) | 여진기회로및여진기회로에서의디지털변조및아날로그변조방법 | |
Daly et al. | A sigma-delta based open-loop frequency modulator | |
JPH07273674A (ja) | If信号再生回路 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |