DE3854763D1 - Verfahren zum Überprüfen eines Verstärkers zur Feststellung von durch Intermodulationsprodukte verursachte Verzerrungscharakteristiken. - Google Patents
Verfahren zum Überprüfen eines Verstärkers zur Feststellung von durch Intermodulationsprodukte verursachte Verzerrungscharakteristiken.Info
- Publication number
- DE3854763D1 DE3854763D1 DE3854763T DE3854763T DE3854763D1 DE 3854763 D1 DE3854763 D1 DE 3854763D1 DE 3854763 T DE3854763 T DE 3854763T DE 3854763 T DE3854763 T DE 3854763T DE 3854763 D1 DE3854763 D1 DE 3854763D1
- Authority
- DE
- Germany
- Prior art keywords
- checking
- amplifier
- distortion characteristics
- intermodulation products
- characteristics caused
- 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
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
- G01R23/20—Measurement of non-linear distortion
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8709998A GB2204202B (en) | 1987-04-28 | 1987-04-28 | Radio transmitters |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3854763D1 true DE3854763D1 (de) | 1996-01-18 |
DE3854763T2 DE3854763T2 (de) | 1996-09-05 |
Family
ID=10616461
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE88302588T Expired - Fee Related DE3879259T2 (de) | 1987-04-28 | 1988-03-24 | Rundfunksender. |
DE3854763T Expired - Fee Related DE3854763T2 (de) | 1987-04-28 | 1988-03-24 | Verfahren zum Überprüfen eines Verstärkers zur Feststellung von durch Intermodulationsprodukte verursachte Verzerrungscharakteristiken. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE88302588T Expired - Fee Related DE3879259T2 (de) | 1987-04-28 | 1988-03-24 | Rundfunksender. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4890300A (de) |
EP (2) | EP0499346B1 (de) |
DE (2) | DE3879259T2 (de) |
GB (2) | GB2204202B (de) |
Families Citing this family (64)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4857865A (en) * | 1988-11-10 | 1989-08-15 | Hughes Aircraft Company | Self equalizing multi-stage radio frequency power amplifier |
FR2642243B1 (fr) * | 1989-01-24 | 1991-04-19 | Labo Electronique Physique | Circuit de predistorsion adaptative |
DE69031150T2 (de) * | 1989-05-30 | 1997-11-13 | Canon Kk | Tintenstrahlkopf |
JPH03145346A (ja) * | 1989-10-31 | 1991-06-20 | Nec Corp | 自動車電話システム |
IT1236905B (it) * | 1989-12-21 | 1993-04-26 | Sistema per la messa a punto dei trasmettitori nei ponti radio digitali a grande capacita' | |
US5251328A (en) * | 1990-12-20 | 1993-10-05 | At&T Bell Laboratories | Predistortion technique for communications systems |
GB9111926D0 (en) * | 1991-06-04 | 1991-07-24 | Nat Transcommunications Ltd | An improved method of video noise reduction using non-linear pre/de-emphasis |
SE468616B (sv) * | 1991-06-12 | 1993-02-15 | Ericsson Telefon Ab L M | Foerfarande foer kompensering av saendarnyttosignalens beroende av oeverfoeringsfunktionen foer ett combinerfilter |
US5412691A (en) * | 1991-06-28 | 1995-05-02 | Digital Equipment Corporation | Method and apparatus for equalization for transmission over a band-limited channel |
GB2257860B (en) * | 1991-07-06 | 1995-09-20 | Racal Communications Syst Ltd | Amplification systems |
DE4134472C2 (de) * | 1991-10-18 | 1994-01-27 | Rohde & Schwarz | Verfahren zum Messen des Klirrfaktors eines Wechselspannungssignales |
US5266951A (en) * | 1991-12-30 | 1993-11-30 | Raytheon Company | Analog to digital converter calibration system and method of operation |
GB2265269B (en) * | 1992-03-02 | 1995-08-30 | Motorola Ltd | Radio transmitter with linearization training sequence |
DE69222634T2 (de) * | 1992-07-10 | 1998-02-05 | Thomcast | System und Methode zur Korrektur des Tonträgers |
FR2707127A1 (fr) * | 1993-06-29 | 1995-01-06 | Philips Laboratoire Electroniq | Système de transmission numérique à prédisposition. |
US6288814B1 (en) * | 1994-05-19 | 2001-09-11 | Ortel Corporation | In-line predistorter for linearization of electronic and optical signals |
US5523716A (en) * | 1994-10-13 | 1996-06-04 | Hughes Aircraft Company | Microwave predistortion linearizer |
US5748678A (en) * | 1995-07-13 | 1998-05-05 | Motorola, Inc. | Radio communications apparatus |
JPH09199948A (ja) * | 1996-01-12 | 1997-07-31 | Fujitsu Ltd | 非線形補償回路 |
US5732333A (en) * | 1996-02-14 | 1998-03-24 | Glenayre Electronics, Inc. | Linear transmitter using predistortion |
US6173161B1 (en) * | 1996-09-25 | 2001-01-09 | Lucent Technologies Inc. | Signal improvement by predistortion/postdistortion programmable converter |
US5987069A (en) * | 1996-12-24 | 1999-11-16 | Gte Government Systems Corporation | Method and apparatus for variably allocating upstream and downstream communication spectra |
CA2274718A1 (en) * | 1996-12-24 | 1998-07-02 | Gte Government Systems Corporation | Symbol lock detector |
US6549242B1 (en) * | 1997-04-04 | 2003-04-15 | Harris Corporation | Combining adjacent TV channels for transmission by a common antenna |
US5798674A (en) * | 1997-04-08 | 1998-08-25 | Raytheon Company | Band Limited AM modulator using linear power amplification |
KR100251561B1 (ko) | 1997-06-19 | 2000-04-15 | 윤종용 | 디지털통신시스템의송신기선형화장치및방법 |
WO1999005784A1 (de) * | 1997-07-28 | 1999-02-04 | Rohde & Schwarz Gmbh & Co. Kg | Messverfahren und messeinrichtung zum messen der verzerrung eines hochfrequenz-leistungsverstärkers und entzerrungsverfahren und entzerrungseinrichtung zum automatischen entzerren eines hochfrequenz-leistungsverstärkers |
US6282247B1 (en) * | 1997-09-12 | 2001-08-28 | Ericsson Inc. | Method and apparatus for digital compensation of radio distortion over a wide range of temperatures |
US6239657B1 (en) | 1998-03-27 | 2001-05-29 | Rohde & Schwarz Gmbh & Co. Kg | Method and device for measuring the distortion of a high-frequency power amplifier and method and means for automatically equalizing a high-frequency power amplifier |
GB2339354B (en) | 1998-07-02 | 2003-10-08 | Wireless Systems Int Ltd | A predistorter |
GB2339917A (en) * | 1998-07-21 | 2000-02-09 | Ifr Limited | Generating a multitone test signal |
US6304594B1 (en) | 1998-07-27 | 2001-10-16 | General Dynamics Government Systems Corporation | Interference detection and avoidance technique |
US6212229B1 (en) | 1998-12-16 | 2001-04-03 | General Dynamics Government Systems Corporation | Adaptive pre-emphasis technique |
GB2347031B (en) | 1999-02-12 | 2001-03-21 | Wireless Systems Int Ltd | Signal processing means |
WO2000048308A1 (en) | 1999-02-12 | 2000-08-17 | Wireless Systems International Limited | Signal processing apparatus |
DE69940998D1 (de) * | 1999-06-30 | 2009-07-30 | Alcatel Lucent | Verfahren zur breitbandigen Linearisierung von Leistungsverstärkern |
US6724177B2 (en) | 2000-12-14 | 2004-04-20 | Tropian, Inc. | Method and apparatus for accurate measurement of communications signals |
US7058369B1 (en) | 2001-11-21 | 2006-06-06 | Pmc-Sierra Inc. | Constant gain digital predistortion controller for linearization of non-linear amplifiers |
US7248642B1 (en) * | 2002-02-05 | 2007-07-24 | Andrew Corporation | Frequency-dependent phase pre-distortion for reducing spurious emissions in communication networks |
US7197085B1 (en) | 2002-03-08 | 2007-03-27 | Andrew Corporation | Frequency-dependent magnitude pre-distortion for reducing spurious emissions in communication networks |
US7266159B2 (en) * | 2002-03-08 | 2007-09-04 | Andrew Corporation | Frequency-dependent magnitude pre-distortion on non-baseband input signals for reducing spurious emissions in communication networks |
DE10219340B4 (de) * | 2002-04-30 | 2014-02-20 | Rohde & Schwarz Gmbh & Co. Kg | Verfahren und Einrichtung zum Messen von Intermodulationsverzerrungen |
US8472897B1 (en) | 2006-12-22 | 2013-06-25 | Dali Systems Co. Ltd. | Power amplifier predistortion methods and apparatus |
US8811917B2 (en) | 2002-05-01 | 2014-08-19 | Dali Systems Co. Ltd. | Digital hybrid mode power amplifier system |
US6985704B2 (en) | 2002-05-01 | 2006-01-10 | Dali Yang | System and method for digital memorized predistortion for wireless communication |
US8380143B2 (en) * | 2002-05-01 | 2013-02-19 | Dali Systems Co. Ltd | Power amplifier time-delay invariant predistortion methods and apparatus |
US7139327B2 (en) * | 2002-06-10 | 2006-11-21 | Andrew Corporation | Digital pre-distortion of input signals for reducing spurious emissions in communication networks |
US7251293B2 (en) * | 2003-06-27 | 2007-07-31 | Andrew Corporation | Digital pre-distortion for the linearization of power amplifiers with asymmetrical characteristics |
WO2006046294A1 (ja) * | 2004-10-28 | 2006-05-04 | Mitsubishi Denki Kabushiki Kaisha | リニアライザ |
US7596326B2 (en) * | 2005-10-27 | 2009-09-29 | Emcore Corporation | Distortion cancellation circuitry for optical receivers |
CN101479956B (zh) * | 2006-04-28 | 2013-07-31 | 大力系统有限公司 | 用于无线通信的高效率线性化功率放大器 |
US7634198B2 (en) * | 2006-06-21 | 2009-12-15 | Emcore Corporation | In-line distortion cancellation circuits for linearization of electronic and optical signals with phase and frequency adjustment |
US20080130785A1 (en) * | 2006-12-04 | 2008-06-05 | Raytheon Company | Frequency and temperature dependent pre-distortion |
CN102017553B (zh) | 2006-12-26 | 2014-10-15 | 大力系统有限公司 | 用于多信道宽带通信系统中的基带预失真线性化的方法和系统 |
US9026067B2 (en) | 2007-04-23 | 2015-05-05 | Dali Systems Co. Ltd. | Remotely reconfigurable power amplifier system and method |
US8274332B2 (en) | 2007-04-23 | 2012-09-25 | Dali Systems Co. Ltd. | N-way Doherty distributed power amplifier with power tracking |
US7688135B2 (en) * | 2007-04-23 | 2010-03-30 | Dali Systems Co. Ltd. | N-way Doherty distributed power amplifier |
US8224266B2 (en) * | 2007-08-30 | 2012-07-17 | Dali Systems Co., Ltd. | Power amplifier predistortion methods and apparatus using envelope and phase detector |
CN102150361B (zh) | 2007-12-07 | 2016-11-09 | 大力系统有限公司 | 基带导出的射频数字预失真 |
US8331879B2 (en) * | 2008-10-15 | 2012-12-11 | Research In Motion Limited | Multi-dimensional Volterra series transmitter linearization |
CN103597807B (zh) | 2010-09-14 | 2015-09-30 | 大理系统有限公司 | 远程可重新配置的分布式天线系统和方法 |
US8711976B2 (en) | 2011-05-12 | 2014-04-29 | Andrew Llc | Pre-distortion architecture for compensating non-linear effects |
WO2013175073A1 (en) * | 2012-05-22 | 2013-11-28 | Teknologian Tutkimuskeskus Vtt | Intermodulation sensor platform based on mechanical resonator |
EP3236584B8 (de) | 2016-04-18 | 2020-08-26 | Rohde & Schwarz GmbH & Co. KG | Verstärkervorrichtung für hochfrequenzsignale |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1381597A (en) * | 1971-07-22 | 1975-01-22 | Marconi Co Ltd | High frequency amplifier arrangements |
GB1419519A (en) * | 1972-10-02 | 1975-12-31 | Pye Ltd | Correcting amplifier non-linearity |
US4025855A (en) * | 1976-04-30 | 1977-05-24 | General Aviation Electronics, Inc. | Multi-channel R.F. transducer with channel selector coupled to selected channel filter |
GB1529471A (en) * | 1976-10-05 | 1978-10-18 | British Broadcasting Corp | Measurement of nonlinear distortion in signal transmission circuits |
FR2371817B1 (fr) * | 1976-11-19 | 1980-09-05 | Thomson Csf | Dispositif correcteur de distorsion des etages d'amplification transistorises a large bande et amplificateur comportant de tels dispositifs |
US4165493A (en) * | 1978-04-17 | 1979-08-21 | Rockwell International Corporation | Protected amplifier apparatus |
US4238855A (en) * | 1979-09-19 | 1980-12-09 | Rca Corporation | Parallel operation of multiple TV transmitters |
FR2482799A1 (fr) * | 1980-05-14 | 1981-11-20 | Lgt Lab Gen Telecomm | Dispositif de precorrection de produits de non linearite et systeme de transmission de signaux de television comportant de tel dispositif |
US4422047A (en) * | 1981-11-23 | 1983-12-20 | E-Systems, Inc. | Solid state autotune power amplifier |
US4491973A (en) * | 1982-05-19 | 1985-01-01 | Idol Charles A | Transmitter testing method |
DE3224080A1 (de) * | 1982-06-28 | 1983-12-29 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur ermittlung der daempfungsverzerrung und der gruppenlaufzeitverzerrung eines messobjekts, insbesondere einer datenuebertragungsstrecke |
GB2153173B (en) * | 1984-01-19 | 1987-09-30 | Marconi Co Ltd | High-frequency pre-distortion circuit for power amplifiers |
FR2576725B1 (fr) * | 1985-01-25 | 1988-07-08 | Thomson Csf | Amplificateur en classe ab et son correcteur de distorsion |
-
1987
- 1987-04-28 GB GB8709998A patent/GB2204202B/en not_active Expired - Lifetime
-
1988
- 1988-03-24 DE DE88302588T patent/DE3879259T2/de not_active Expired - Fee Related
- 1988-03-24 EP EP92201343A patent/EP0499346B1/de not_active Expired - Lifetime
- 1988-03-24 EP EP88302588A patent/EP0289130B1/de not_active Expired - Lifetime
- 1988-03-24 DE DE3854763T patent/DE3854763T2/de not_active Expired - Fee Related
- 1988-04-25 US US07/185,788 patent/US4890300A/en not_active Expired - Fee Related
-
1991
- 1991-05-08 GB GB9109898A patent/GB2245115B/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0499346A1 (de) | 1992-08-19 |
EP0289130B1 (de) | 1993-03-17 |
US4890300A (en) | 1989-12-26 |
DE3879259T2 (de) | 1993-10-07 |
EP0289130A2 (de) | 1988-11-02 |
GB2204202B (en) | 1991-11-27 |
GB2245115A (en) | 1991-12-18 |
DE3879259D1 (de) | 1993-04-22 |
GB2245115B (en) | 1992-03-11 |
GB9109898D0 (en) | 1991-07-03 |
EP0499346B1 (de) | 1995-12-06 |
EP0289130A3 (en) | 1989-03-08 |
GB2204202A (en) | 1988-11-02 |
DE3854763T2 (de) | 1996-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3854763D1 (de) | Verfahren zum Überprüfen eines Verstärkers zur Feststellung von durch Intermodulationsprodukte verursachte Verzerrungscharakteristiken. | |
DE3783593D1 (de) | Verfahren zum betreiben eines analysiergeraets. | |
DE3576204D1 (de) | Verfahren und apparat zur bestimmung einer nachzuweisenden substanz, verfahren zur eichung eines solchen apparates. | |
DE3871877T2 (de) | Verfahren zum anbringen eines orthodontischen hilfsstuecks. | |
DE3382669D1 (de) | Verfahren zum vermindern der konvergenzzeit eines echokompensators. | |
DE3786007D1 (de) | Verfahren zum trennen eines einzelnen bestandteils von seiner fluessigen loesung. | |
DE3882862D1 (de) | Verfahren zum extrahieren von atp. | |
DE3776450D1 (de) | Verfahren zum herstellen eines luftschall absorbierenden bauelements. | |
EP0147166A3 (de) | Verfahren und Anordnung zum Korrigieren von verzerrten seismischen Daten | |
DE3680512D1 (de) | Verfahren zum beziehen eines innenausstattungsteiles. | |
DE3884984T2 (de) | Verfahren und Vorrichtung zur Inbetriebstellung eines Tintenstrahlschreibers. | |
DE3484000D1 (de) | Verfahren und vorrichtung zum wiedergeben eines chrominanzsignals. | |
AT369322B (de) | Verfahren zur reinigung von zylindern eines offsetdruckwerkes | |
DE3880095D1 (de) | Verfahren zur qualitaetsbeurteilung eines spritzgegossenen produktes. | |
DE3883364D1 (de) | Verfahren zum nachweis von potentiellen karzinogenen. | |
DE3889903T2 (de) | Verfahren zur behandlung der verborgenen linien eines bildes. | |
AT363575B (de) | Verfahren zur behandlung eines sauren erdoeldestillats | |
AT366912B (de) | Verfahren zur herstellung eines enzymabbaulyophilisats aus milch | |
DE229441T1 (de) | Verfahren zum formen eines gegenstandes. | |
DE58904843D1 (de) | Verfahren zur entfernung von ethanol aus durch vergaerung erzeugten getraenken. | |
DE3854232T2 (de) | Verfahren zum verbessern eines bildelements. | |
AT370417B (de) | Verfahren zur acylierung eines 7-aminocephemderivates | |
DE69022774D1 (de) | Verfahren zur Untergrundkorrektur zum Gebrauch in der Gaschromatographie. | |
DE3862662D1 (de) | Verfahren zum fertigen eines ovalrades. | |
DE69324129T2 (de) | Verfahren für die verringerung von falschen positiven signalen in einem rns amplifikationssystem |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |