CA2069476C - Dispositif et methode pour faire varier un signal dans un emetteur ou un emetteur-recepteur - Google Patents
Dispositif et methode pour faire varier un signal dans un emetteur ou un emetteur-recepteurInfo
- Publication number
- CA2069476C CA2069476C CA 2069476 CA2069476A CA2069476C CA 2069476 C CA2069476 C CA 2069476C CA 2069476 CA2069476 CA 2069476 CA 2069476 A CA2069476 A CA 2069476A CA 2069476 C CA2069476 C CA 2069476C
- Authority
- CA
- Canada
- Prior art keywords
- signal
- transceiver
- power amplifier
- input signal
- produce
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
- H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
- H03C3/406—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated using a feedback loop containing mixers or demodulators
-
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
- H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
- H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US60254090A | 1990-10-24 | 1990-10-24 | |
US602,540 | 1990-10-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2069476A1 CA2069476A1 (fr) | 1992-04-25 |
CA2069476C true CA2069476C (fr) | 1996-12-17 |
Family
ID=24411752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2069476 Expired - Fee Related CA2069476C (fr) | 1990-10-24 | 1991-09-26 | Dispositif et methode pour faire varier un signal dans un emetteur ou un emetteur-recepteur |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPH05503408A (fr) |
CA (1) | CA2069476C (fr) |
FR (1) | FR2669165B1 (fr) |
GB (1) | GB2254973B (fr) |
MX (1) | MX9101738A (fr) |
WO (1) | WO1992008297A1 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2272133B (en) * | 1992-11-02 | 1996-06-12 | Motorola Inc | Radio system |
US5710981A (en) * | 1995-05-23 | 1998-01-20 | Ericsson Inc. | Portable radio power control device and method using incrementally degraded received signals |
JP3537988B2 (ja) * | 1997-03-25 | 2004-06-14 | 松下電器産業株式会社 | 無線送信装置 |
US6112059A (en) * | 1997-11-12 | 2000-08-29 | Motorola, Inc. | Off-channel leakage power monitor apparatus and method |
US6141541A (en) * | 1997-12-31 | 2000-10-31 | Motorola, Inc. | Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals |
GB2345599A (en) * | 1998-12-23 | 2000-07-12 | Nokia Mobile Phones Ltd | A baseband predistorter for a transmitter with combined downconversion and demodulation in the feedback path |
WO2001063791A2 (fr) * | 2000-02-23 | 2001-08-30 | Scientific Generics Limited | Circuit emetteur-recepteur |
GB2369735B (en) * | 2000-12-02 | 2004-07-14 | Roke Manor Research | Method of linearising a signal |
GB2379109B (en) * | 2001-08-21 | 2005-07-13 | Ubinetics Ltd | Linearised radio transmitter |
EP1499015A1 (fr) * | 2003-07-17 | 2005-01-19 | Siemens Aktiengesellschaft | Circuit et procédé pour la linéarisation de la caractéristique d'un amplificateur de puissance GSM |
JP4479931B2 (ja) * | 2008-03-11 | 2010-06-09 | 日本電気株式会社 | 通信装置、歪み補償回路、および歪み補償方法 |
US8615054B2 (en) * | 2010-09-24 | 2013-12-24 | Intel Corporation | Close-loop power amplifier pre-distortion correction |
EP3396398B1 (fr) * | 2017-04-27 | 2020-07-08 | Rohde & Schwarz GmbH & Co. KG | Procédé de correction de signal, système permettant de corriger un signal mesuré ainsi qu'un oscilloscope |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2068850A5 (fr) * | 1969-10-03 | 1971-09-03 | Cit Alcatel | |
JPS6110327Y2 (fr) * | 1980-01-10 | 1986-04-03 | ||
JPS6041821A (ja) * | 1983-08-18 | 1985-03-05 | Nec Corp | 送信出力電力制御装置 |
EP0378719B1 (fr) * | 1989-01-18 | 1994-04-27 | Siemens Aktiengesellschaft | Générateur de distorsions numérique |
-
1991
- 1991-09-26 JP JP51826191A patent/JPH05503408A/ja active Pending
- 1991-09-26 WO PCT/US1991/007012 patent/WO1992008297A1/fr active Application Filing
- 1991-09-26 CA CA 2069476 patent/CA2069476C/fr not_active Expired - Fee Related
- 1991-10-24 FR FR9113151A patent/FR2669165B1/fr not_active Expired - Fee Related
- 1991-10-24 MX MX9101738A patent/MX9101738A/es not_active IP Right Cessation
-
1992
- 1992-06-22 GB GB9213179A patent/GB2254973B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2254973A (en) | 1992-10-21 |
GB2254973B (en) | 1995-02-22 |
WO1992008297A1 (fr) | 1992-05-14 |
FR2669165A1 (fr) | 1992-05-15 |
CA2069476A1 (fr) | 1992-04-25 |
MX9101738A (es) | 1992-06-05 |
GB9213179D0 (en) | 1992-08-12 |
FR2669165B1 (fr) | 1995-07-21 |
JPH05503408A (ja) | 1993-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |