ATE453957T1 - Verfahren und anordnung in bezug auf telekommunikationssysteme - Google Patents

Verfahren und anordnung in bezug auf telekommunikationssysteme

Info

Publication number
ATE453957T1
ATE453957T1 AT02736397T AT02736397T ATE453957T1 AT E453957 T1 ATE453957 T1 AT E453957T1 AT 02736397 T AT02736397 T AT 02736397T AT 02736397 T AT02736397 T AT 02736397T AT E453957 T1 ATE453957 T1 AT E453957T1
Authority
AT
Austria
Prior art keywords
modulator
filter
pulse width
compensation block
transformer
Prior art date
Application number
AT02736397T
Other languages
English (en)
Inventor
Tom Simonsen
Original Assignee
Ericsson Telefon Ab L M
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.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE453957T1 publication Critical patent/ATE453957T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • 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
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
AT02736397T 2001-07-02 2002-06-05 Verfahren und anordnung in bezug auf telekommunikationssysteme ATE453957T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US30181601P 2001-07-02 2001-07-02
US10/026,936 US6975843B2 (en) 2000-12-21 2001-12-27 Method and an arrangement relating to telecommunications systems
PCT/SE2002/001082 WO2003005586A1 (en) 2001-07-02 2002-06-05 A method and an arrangement relating to telecommunications systems

Publications (1)

Publication Number Publication Date
ATE453957T1 true ATE453957T1 (de) 2010-01-15

Family

ID=26701840

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02736397T ATE453957T1 (de) 2001-07-02 2002-06-05 Verfahren und anordnung in bezug auf telekommunikationssysteme

Country Status (9)

Country Link
US (1) US6975843B2 (de)
EP (1) EP1402638B1 (de)
KR (1) KR100944053B1 (de)
CN (1) CN1224170C (de)
AT (1) ATE453957T1 (de)
BR (1) BR0210765A (de)
DE (1) DE60234924D1 (de)
ES (1) ES2338996T3 (de)
WO (1) WO2003005586A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060140644A1 (en) * 2004-12-23 2006-06-29 Paolella Arthur C High performance, high efficiency fiber optic link for analog and RF systems
US9705562B2 (en) * 2006-07-25 2017-07-11 Broadcom Europe Limited Dual transformer communication interface
US8098726B2 (en) * 2007-07-27 2012-01-17 Intel Corporation Subranging for a pulse position and pulse width modulation based transmitter
WO2009049305A2 (en) 2007-10-12 2009-04-16 Arqule, Inc. 5- (2-hydroxyphenyl) tetrazoles as hsp90 inhibitors against cancer
WO2010118174A2 (en) * 2009-04-07 2010-10-14 Futurewei Technologies, Inc. Improving power efficiency of a line driver
US9762274B2 (en) * 2014-05-29 2017-09-12 Qualcomm Incorporated Feedback receive path with RF filter
KR102204356B1 (ko) 2018-07-06 2021-01-18 한국전자기술연구원 저전력 펄스폭변조 송신기

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59814Y2 (ja) * 1977-04-22 1984-01-11 ブライアン・ア−ネスト・アトウツド Ｄ級増幅器
US4147985A (en) * 1977-07-29 1979-04-03 Rogers Noel A Low level modulation system for a radio transmitter
JPS5492005A (en) * 1977-12-29 1979-07-20 Sanyo Electric Co Ltd Automatic modulation factor control circuit of transmitter
US4524335A (en) * 1982-03-13 1985-06-18 Nippon Gakki Seizo Kabushiki Kaisha Pulse-width modulation circuit with carrier signal frequency control
US4635296A (en) * 1985-02-22 1987-01-06 Transkinetic Systems, Inc. Wide bandwidth ultra high stability FM telemetry transmitter
AU593564B2 (en) * 1985-07-24 1990-02-15 Nec Corporation Spread spectrum power line communications
US5472443A (en) * 1991-06-07 1995-12-05 Hemostatic Surgery Corporation Electrosurgical apparatus employing constant voltage and methods of use
US6075817A (en) * 1991-12-23 2000-06-13 Digital Compression Technology Compressive communication and storage system
US5515041A (en) * 1993-06-14 1996-05-07 Simmonds Precision Products Inc. Composite shaft monitoring system
US5703565A (en) * 1996-02-23 1997-12-30 Sensormatic Electronics Corporation Transformer coupled switching transmitter for electronic article surveillance system
AU734813B2 (en) 1996-10-31 2001-06-21 Bang & Olufsen A/S Pulse modulation power amplifier with enhanced cascade control method
US5834987A (en) * 1997-07-30 1998-11-10 Ercisson Inc. Frequency synthesizer systems and methods for three-point modulation with a DC response
US5909153A (en) * 1998-02-05 1999-06-01 Tripath Technology, Inc. Method and apparatus for compensating for delays in modulator loops
US6118336A (en) * 1998-10-30 2000-09-12 Intersil Corporation Start-up circuit for self oscillating class D modulator
US6388431B1 (en) * 1998-11-03 2002-05-14 Ametek, Inc. High efficiency power supply for a two-wire loop powered device
US6295443B1 (en) * 1998-11-30 2001-09-25 Scott C Matthew Automatic tuning AM transmitter
US6246283B1 (en) * 1999-03-09 2001-06-12 Tripath Technology, Inc. Power efficient line driver
AU2285501A (en) * 1999-12-22 2001-07-03 Lpb Communications, Inc. Remotely activated novelty device
SE0003342D0 (sv) 2000-09-19 2000-09-19 Bang & Olufsen Powerhouse As Controlled self-oscillation modulator and power conversion system using such a modulator
US6362702B1 (en) * 2000-09-29 2002-03-26 Bang & Olufsen Powerhouse A/S Controlled self-oscillation modulator and power conversion system using such a modulator

Also Published As

Publication number Publication date
ES2338996T3 (es) 2010-05-14
US6975843B2 (en) 2005-12-13
KR20040012934A (ko) 2004-02-11
WO2003005586A1 (en) 2003-01-16
KR100944053B1 (ko) 2010-02-24
BR0210765A (pt) 2004-07-20
EP1402638A1 (de) 2004-03-31
CN1224170C (zh) 2005-10-19
US20030003877A1 (en) 2003-01-02
DE60234924D1 (de) 2010-02-11
EP1402638B1 (de) 2009-12-30
CN1522494A (zh) 2004-08-18

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Legal Events

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