IT1311679B1 - Sistema di predistorsione per la linearizzazione di amplificatori. - Google Patents
Sistema di predistorsione per la linearizzazione di amplificatori.Info
- Publication number
- IT1311679B1 IT1311679B1 IT1999MC000051A ITMC990051A IT1311679B1 IT 1311679 B1 IT1311679 B1 IT 1311679B1 IT 1999MC000051 A IT1999MC000051 A IT 1999MC000051A IT MC990051 A ITMC990051 A IT MC990051A IT 1311679 B1 IT1311679 B1 IT 1311679B1
- Authority
- IT
- Italy
- Prior art keywords
- linearization
- amplifiers
- distortion system
- distortion
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3282—Acting on the phase and the amplitude of 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
-
- 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
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
-
- 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
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3294—Acting on the real and imaginary components of the input signal
-
- 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
- H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
-
- 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
- H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/336—A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/438—Separate feedback of amplitude and phase signals being present
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/57—Separate feedback of real and complex signals being present
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/66—Clipping circuitry being present in an amplifier, i.e. the shape of the signal being modified
-
- 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
- H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion
-
- 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
- H04B2001/0425—Circuits with power amplifiers with linearisation using predistortion
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1999MC000051A IT1311679B1 (it) | 1999-06-17 | 1999-06-17 | Sistema di predistorsione per la linearizzazione di amplificatori. |
EP00830422A EP1065856A3 (en) | 1999-06-17 | 2000-06-15 | Baseband predistortion system for linearising power amplifiers. |
CA002311878A CA2311878A1 (en) | 1999-06-17 | 2000-06-16 | Baseband predistortion system for linearising power amplifiers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1999MC000051A IT1311679B1 (it) | 1999-06-17 | 1999-06-17 | Sistema di predistorsione per la linearizzazione di amplificatori. |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMC990051A0 ITMC990051A0 (it) | 1999-06-17 |
ITMC990051A1 ITMC990051A1 (it) | 2000-12-17 |
IT1311679B1 true IT1311679B1 (it) | 2002-03-19 |
Family
ID=11357712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT1999MC000051A IT1311679B1 (it) | 1999-06-17 | 1999-06-17 | Sistema di predistorsione per la linearizzazione di amplificatori. |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1065856A3 (it) |
CA (1) | CA2311878A1 (it) |
IT (1) | IT1311679B1 (it) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003168931A (ja) * | 2001-12-04 | 2003-06-13 | Nec Corp | 歪補償回路 |
US7349490B2 (en) * | 2003-04-16 | 2008-03-25 | Powerwave Technologies, Inc. | Additive digital predistortion system employing parallel path coordinate conversion |
US7042287B2 (en) | 2003-07-23 | 2006-05-09 | Northrop Grumman Corporation | System and method for reducing dynamic range and improving linearity in an amplication system |
WO2006114513A1 (fr) * | 2005-04-28 | 2006-11-02 | France Telecom | Procede de transmission d'un signal module avec une forte dynamique d'amplitude, emetteur et recepteur correspondant |
US8737526B2 (en) * | 2010-06-30 | 2014-05-27 | Qualcomm Incorporated | Predistortion of complex modulated waveform |
US8891668B2 (en) * | 2011-06-30 | 2014-11-18 | Intel IP Corporation | System and method for estimating and correcting phase shift in a wireless communication device |
US8964821B2 (en) | 2011-10-14 | 2015-02-24 | Qualcomm Incorporated | Shared feedback for adaptive transmitter pre-distortion |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2315379B (en) * | 1996-07-11 | 2001-01-10 | Roke Manor Research | Non-linear filter apparatus |
US5737432A (en) * | 1996-11-18 | 1998-04-07 | Aphex Systems, Ltd. | Split-band clipper |
CN1171422C (zh) * | 1996-11-19 | 2004-10-13 | 松下电器产业株式会社 | 发信装置 |
US5886573A (en) * | 1998-03-06 | 1999-03-23 | Fujant, Inc. | Amplification using amplitude reconstruction of amplitude and/or angle modulated carrier |
-
1999
- 1999-06-17 IT IT1999MC000051A patent/IT1311679B1/it active
-
2000
- 2000-06-15 EP EP00830422A patent/EP1065856A3/en not_active Withdrawn
- 2000-06-16 CA CA002311878A patent/CA2311878A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1065856A3 (en) | 2003-09-03 |
EP1065856A2 (en) | 2001-01-03 |
CA2311878A1 (en) | 2000-12-17 |
ITMC990051A1 (it) | 2000-12-17 |
ITMC990051A0 (it) | 1999-06-17 |
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