DE602005023551D1 - Mehrfachband-Vorwärtskopplungsverstärker und Methode zur Einstellung desselben - Google Patents

Mehrfachband-Vorwärtskopplungsverstärker und Methode zur Einstellung desselben

Info

Publication number
DE602005023551D1
DE602005023551D1 DE602005023551T DE602005023551T DE602005023551D1 DE 602005023551 D1 DE602005023551 D1 DE 602005023551D1 DE 602005023551 T DE602005023551 T DE 602005023551T DE 602005023551 T DE602005023551 T DE 602005023551T DE 602005023551 D1 DE602005023551 D1 DE 602005023551D1
Authority
DE
Germany
Prior art keywords
adjusting
same
feedforward amplifier
band feedforward
band
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.)
Active
Application number
DE602005023551T
Other languages
English (en)
Inventor
Yasunori Suzuki
Shoichi Narahashi
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.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
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 NTT Docomo Inc filed Critical NTT Docomo Inc
Publication of DE602005023551D1 publication Critical patent/DE602005023551D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/60—Heating arrangements wherein the heating current flows through granular powdered or fluid material, e.g. for salt-bath furnace, electrolytic heating

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
DE602005023551T 2004-01-28 2005-01-27 Mehrfachband-Vorwärtskopplungsverstärker und Methode zur Einstellung desselben Active DE602005023551D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004020045 2004-01-28

Publications (1)

Publication Number Publication Date
DE602005023551D1 true DE602005023551D1 (de) 2010-10-28

Family

ID=34650793

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005023551T Active DE602005023551D1 (de) 2004-01-28 2005-01-27 Mehrfachband-Vorwärtskopplungsverstärker und Methode zur Einstellung desselben

Country Status (5)

Country Link
US (1) US7126422B2 (de)
EP (1) EP1560328B1 (de)
KR (1) KR100665018B1 (de)
CN (1) CN100468956C (de)
DE (1) DE602005023551D1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602006000131T2 (de) * 2005-06-03 2008-07-03 Ntt Docomo Inc. Bandauswahl-Vorwärtskopplungsverstärker
CN100576767C (zh) * 2005-06-03 2009-12-30 株式会社Ntt都科摩 多频带用前馈放大器
JP4772574B2 (ja) * 2006-04-14 2011-09-14 株式会社東芝 増幅器および無線通信回路
US8183935B2 (en) * 2006-10-03 2012-05-22 Milano Alberto Phased shifted oscilator and antenna
IL186186A0 (en) * 2006-10-03 2008-01-20 Alberto Milano Communication system and method using an active phased array antenna
US20110256857A1 (en) * 2010-04-20 2011-10-20 Intersil Americas Inc. Systems and Methods for Improving Antenna Isolation Using Signal Cancellation
JP5556643B2 (ja) * 2010-12-17 2014-07-23 富士通株式会社 増幅装置および歪み補償方法
US8576943B2 (en) * 2011-09-09 2013-11-05 Telefonaktiebolaget L M Ericsson (Publ) Linearization for a single power amplifier in a multi-band transmitter
US8718580B2 (en) * 2011-11-11 2014-05-06 Hbc Solutions, Inc. Broadband high efficiency amplifier system incorporating dynamic modulation of load impedance
US20140169236A1 (en) * 2012-12-13 2014-06-19 Kumu Networks Feed forward signal cancellation
US9281852B2 (en) * 2013-01-04 2016-03-08 Marvell World Trade Ltd. Method and apparatus for calibrating time alignment
KR101702284B1 (ko) * 2015-05-21 2017-02-06 한국산업기술대학교산학협력단 교차 상쇄 방식을 이용한 다중대역 고효율 전력 증폭기
KR101702283B1 (ko) * 2015-08-28 2017-02-06 주식회사 인스파워 다중대역 고효율 전력 증폭기
US11128379B2 (en) * 2016-02-24 2021-09-21 Nec Corporation Multi-band signal processing system, joint box for multi-band signal processing system, and method for accommodating multi-band signal processing system
EP3297157B1 (de) * 2016-09-14 2020-11-04 Rohde & Schwarz GmbH & Co. KG Konstruktionsverfahren für mehrwegeverstärker sowie mehrwegeverstärker
KR101863253B1 (ko) * 2016-12-23 2018-06-01 주식회사 인스파워 다중대역 고효율 전력 증폭기

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0777330B2 (ja) 1988-02-03 1995-08-16 日本電信電話株式会社 フィードフォワード増幅器の自動調整回路
US6172565B1 (en) * 1998-03-13 2001-01-09 Lucent Technologies Inc. Adaptive joint linearization, equalization and delay alignment for a wideband power amplifier
US6208204B1 (en) * 1998-12-14 2001-03-27 Ntt Mobile Communications Network, Inc. Feedforward amplifier
JP3371837B2 (ja) 1999-01-28 2003-01-27 日本電気株式会社 フィードフォワード増幅器及びその増幅方法
EP1030441A3 (de) * 1999-02-16 2004-03-17 Matsushita Electric Industrial Co., Ltd. Vorwärtskopplungsverstärker
EP1724917A1 (de) * 1999-03-31 2006-11-22 NTT Mobile Communications Network Inc. Vorwärtskopplungsverstärker
JP2001284975A (ja) 2000-03-29 2001-10-12 Hitachi Kokusai Electric Inc フィードフォワード増幅器
JP3877937B2 (ja) * 2000-05-18 2007-02-07 株式会社エヌ・ティ・ティ・ドコモ フィードフォワード増幅器
JP2001339251A (ja) * 2000-05-25 2001-12-07 Mitsubishi Electric Corp フィードフォワード増幅器
CN1215727C (zh) * 2001-11-06 2005-08-17 株式会社Ntt都科摩 具有双重环路的前馈放大器
JP2004064377A (ja) * 2002-07-29 2004-02-26 Hitachi Kokusai Electric Inc フィードフォワード増幅器

Also Published As

Publication number Publication date
CN1649259A (zh) 2005-08-03
EP1560328B1 (de) 2010-09-15
EP1560328A1 (de) 2005-08-03
KR20050077489A (ko) 2005-08-02
CN100468956C (zh) 2009-03-11
US20050163254A1 (en) 2005-07-28
US7126422B2 (en) 2006-10-24
KR100665018B1 (ko) 2007-01-04

Similar Documents

Publication Publication Date Title
DE602005023551D1 (de) Mehrfachband-Vorwärtskopplungsverstärker und Methode zur Einstellung desselben
DE602004028207D1 (de) Gerät und Methode zur Kontrolle der Abspielcharakteristika
DK1744590T3 (da) Høreapparat og tilsvarende fremgangsmåde til indstilling heraf
DE602006004792D1 (de) Potenzreihenvorverzerrer und Regelungsverfahren
DE602006010822D1 (de) Schleifartikel und herstellungsverfahren dafür
DE602006005024D1 (de) Verbinder und Methode zur Montage des Verbinders
DK1744589T3 (da) Høreindretning og tilsvarende fremgangsmåde
IL184722A0 (en) Novel haloalkylsulfonanilide derivative, herbicide, and method of use thereof
DE602006009981D1 (de) Methode und Vorrichtung zur Fahrunterstützung
DE602005025091D1 (de) Piezooszillator und herstellungsverfahren dafür
HRP20140383T1 (en) Identity document and method for the manufacture thereof
DE602006020117D1 (de) Nadellager und herstellungsverfahren dafür
SI1883293T1 (sl) Sestavek in postopek za nadziranje insektov
DE602005001520D1 (de) Zeiteinstellungssystem und Zeiteinstellungsverfahren
DE602005020158D1 (de) Glucanderivate und herstellungsverfahren dafür
DE602006019849D1 (de) Proteinspaltungsverfahren und verwendung davon
DE602006004151D1 (de) Farbwerk und entsprechendes Einstellverfahren
DE602006006956D1 (de) Lüftungsgerät und Verfahren zur Steuerung desselben
DE602006007867D1 (de) Schleifartikel und herstellungsverfahren dafür
DE602006007785D1 (de) Etalon und Herstellungsverfahren dafür.
WO2006094134A3 (en) Kim-1 antibodies for treatment of th2-mediated conditions
DK1463376T3 (da) Betjeningselement til høreapparater og hørehjælp
DE602004000764D1 (de) Hörgerät und Verfahren zum Aktivieren desselben
DE602004010348D1 (de) Ventilanordnung und Methode
DE602006007795D1 (de) Keramisches Isoliermaterial und dessen Herstellungsverfahren