DE60131049D1 - Vorverzerrung von Quadratursignalen - Google Patents

Vorverzerrung von Quadratursignalen

Info

Publication number: DE60131049D1
Authority: DE; Germany
Prior art keywords: predistortion; quadrature signals; quadrature; signals
Prior art date: 2000-07-24
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

Application number

DE60131049T

Other languages

English (en)

Other versions

DE60131049T2 (de

Inventor

Michael H Myers

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Northrop Grumman Systems Corp

Original Assignee

Northrop Grumman Corp

Priority date (The priority date 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 date listed.)

2000-07-24

Filing date

2001-07-12

Publication date

2007-12-06

2001-07-12 Application filed by Northrop Grumman Corp filed Critical Northrop Grumman Corp

2007-12-06 Publication of DE60131049D1 publication Critical patent/DE60131049D1/de

2008-02-07 Application granted granted Critical

2008-02-07 Publication of DE60131049T2 publication Critical patent/DE60131049T2/de

2021-07-13 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- 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
- 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
- H03F2200/336—A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Physics & Mathematics (AREA)
Nonlinear Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Amplifiers (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Transmitters (AREA)

DE60131049T 2000-07-24 2001-07-12 Vorverzerrung von Quadratursignalen Expired - Lifetime DE60131049T2 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US624149		2000-07-24
US09/624,149 US6751268B1 (en)	2000-07-24	2000-07-24	Bandpass predistorting expansion method and apparatus for digital radio transmission

Publications (2)

Publication Number	Publication Date
DE60131049D1 true DE60131049D1 (de)	2007-12-06
DE60131049T2 DE60131049T2 (de)	2008-02-07

Family

ID=24500838

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE60131049T Expired - Lifetime DE60131049T2 (de)	2000-07-24	2001-07-12	Vorverzerrung von Quadratursignalen

Country Status (4)

Country	Link
US (1)	US6751268B1 (de)
EP (1)	EP1176777B1 (de)
JP (1)	JP3655851B2 (de)
DE (1)	DE60131049T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE60024890T2 (de) *	2000-09-13	2006-06-14	Nortel Networks Ltd	Mehrbenutzerdetektion in einem cdma-kommunikationssystem
KR100374828B1 (ko) *	2000-09-15	2003-03-04	엘지전자 주식회사	적응성 전치왜곡 송신기
US6778614B1 (en) *	2000-10-17	2004-08-17	Northrop Grumman Corporation	Complex baseband envelope computation
US6940919B2 (en) *	2001-04-16	2005-09-06	Northrop Grumman Corporation	Bandpass predistortion method and apparatus for radio transmission
US6819938B2 (en) *	2001-06-26	2004-11-16	Qualcomm Incorporated	System and method for power control calibration and a wireless communication device
US7349365B2 (en) *	2002-10-22	2008-03-25	Mitsubishi Electric Research Laboratories, Inc.	Mobile telephone messaging by baseband envelope modulation
KR102207844B1 (ko) *	2014-07-08	2021-01-26	한국전자통신연구원	적어도 하나의 안테나 배열에 입사하는 신호의 도착 방향을 추정하는 시스템, 방법, 그리고 컴퓨터 판독가능 매체

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5343500A (en) *	1991-09-03	1994-08-30	At&T Bell Laboratories	Non-linear encoder and decoder for information transmission through non-linear channels
US5867065A (en) *	1997-05-07	1999-02-02	Glenayre Electronics, Inc.	Frequency selective predistortion in a linear transmitter

2000
- 2000-07-24 US US09/624,149 patent/US6751268B1/en not_active Expired - Lifetime
2001
- 2001-07-12 DE DE60131049T patent/DE60131049T2/de not_active Expired - Lifetime
- 2001-07-12 EP EP01116632A patent/EP1176777B1/de not_active Expired - Lifetime
- 2001-07-24 JP JP2001223204A patent/JP3655851B2/ja not_active Expired - Lifetime

Also Published As

Publication number	Publication date
JP2002135341A (ja)	2002-05-10
EP1176777A2 (de)	2002-01-30
US6751268B1 (en)	2004-06-15
EP1176777A3 (de)	2005-08-24
JP3655851B2 (ja)	2005-06-02
EP1176777B1 (de)	2007-10-24
DE60131049T2 (de)	2008-02-07

Legal Events

Date	Code	Title	Description
2008-11-13	8364	No opposition during term of opposition
2012-08-14	R082	Change of representative	Ref document number: 1176777 Country of ref document: EP Representative=s name: WUESTHOFF & WUESTHOFF PATENT- UND RECHTSANWAEL, DE
2012-10-04	R081	Change of applicant/patentee	Ref document number: 1176777 Country of ref document: EP Owner name: NORTHROP GRUMMAN SYSTEMS CORPORATION, US Free format text: FORMER OWNER: NORTHROP GRUMMAN CORP., LOS ANGELES, US Effective date: 20120814
2012-10-04	R082	Change of representative	Ref document number: 1176777 Country of ref document: EP Representative=s name: WUESTHOFF & WUESTHOFF PATENT- UND RECHTSANWAEL, DE Effective date: 20120814

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