BR0101971A - Otimização da impedância da cadeiatransmissor/receptor - Google Patents

Otimização da impedância da cadeiatransmissor/receptor

Info

Publication number
BR0101971A
BR0101971A BR0101971A BR0101971A BR0101971A BR 0101971 A BR0101971 A BR 0101971A BR 0101971 A BR0101971 A BR 0101971A BR 0101971 A BR0101971 A BR 0101971A BR 0101971 A BR0101971 A BR 0101971A
Authority
BR
Brazil
Prior art keywords
output
impedance
signal
amplifier
filter element
Prior art date
Application number
BR0101971A
Other languages
English (en)
Inventor
Jyrki Portin
Original Assignee
Nokia Mobile Phones Ltd
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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Publication of BR0101971A publication Critical patent/BR0101971A/pt

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56Modifications of input or output impedances, not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)

Abstract

Patente de Invenção: "OTIMIZAçãO DA IMPEDâNCIA DACADEIA TRANSMISSOR/RECEPTOR". Um circuíto amplificadorde rádio freq³ência (RF) inclui um amplificador RF possuindo umaentrada para receber um sinal RF a ser amplificado e uma saídapara emitir um sinal RF amplificado para uma carga. Acoplado coma saída do amplificador RF, entre a saída e a carga, éproporcionado um elemento de filtro possuindo uma impedânciaque pode ser controlada. O elemento de filtro está separado doamplificador RF e possui um terminal de entrada para receber osinal RF amplificado, um terminal de saída par emitir um sinal RFfiltrado para a carga e um terminal de controle para receber umsinal de controle. O elemento de filtro é responsivo ao sinal decontrole para por conseq³ência estabelecer uma impedância doelemento de filtro. A impedância do elemento de filtro é controladapara acentuar a eficiência do amplificador RF quando operandoem um nível de potência de saída que difere de um nível máximode potência de saída do projeto. Também revelada é uma cadeiade recepção que inclui uma fonte de sinal RF possuindo umasaída acoplada, através de um dispositivo com impedância quepode ser trocada, com uma entrada de um primeiro circuito RF emum primeiro modo de operação e com uma entrada de um segundocircuito RF em um segundo modo de operação.
BR0101971A 2000-05-16 2001-05-16 Otimização da impedância da cadeiatransmissor/receptor BR0101971A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57177600A 2000-05-16 2000-05-16

Publications (1)

Publication Number Publication Date
BR0101971A true BR0101971A (pt) 2001-12-26

Family

ID=24284999

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0101971A BR0101971A (pt) 2000-05-16 2001-05-16 Otimização da impedância da cadeiatransmissor/receptor

Country Status (4)

Country Link
EP (1) EP1156582A3 (pt)
JP (1) JP2002016448A (pt)
CN (1) CN1324147A (pt)
BR (1) BR0101971A (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442833B1 (ko) * 2002-07-12 2004-08-02 삼성전자주식회사 이동통신시스템에 있어서 다중대역 무선주파수 수신방법및 장치
US6794951B2 (en) * 2002-08-05 2004-09-21 Veeco Instruments, Inc. Solid state RF power switching network
SE0202989D0 (sv) * 2002-10-10 2002-10-10 Allgon Mobile Comm Ab Power amplifier efficiency
DE102006046190B4 (de) * 2006-09-29 2016-09-01 Intel Deutschland Gmbh Schaltungsanordnung, Verfahren zum Betreiben einer Schaltungsanordnung und Verfahren zum Betreiben eines Dual-Mode-UMTS/GSM-Mobiltelefons
US7724084B2 (en) 2007-01-25 2010-05-25 Research In Motion Limited System and method for controlling radio frequency transmissions from an electronic device
EP1950883A1 (en) * 2007-01-25 2008-07-30 Research In Motion Limited System and method for filtering harmonics of a power amplifier
US8099127B2 (en) * 2008-08-01 2012-01-17 Qualcomm Incorporated Multi-mode configurable transmitter circuit
US8731099B2 (en) * 2010-09-13 2014-05-20 Imec Wireless transmitters
GB2581497A (en) * 2019-02-19 2020-08-26 Sony Semiconductor Solutions Corp A device, method and computer program product for amplification of an input signal

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821716A1 (de) * 1988-06-28 1990-01-04 Telefunken Electronic Gmbh Fernsehtuner mit einer bandfilterschaltung
US5276912A (en) * 1990-02-06 1994-01-04 Motorola, Inc. Radio frequency power amplifier having variable output power
ATE126412T1 (de) * 1990-05-21 1995-08-15 Siemens Ag Schaltungsanordnung zur bereichsumschaltung in tunern.
JP3086512B2 (ja) * 1990-11-14 2000-09-11 エリクソン−ジーイー モービル コミュニケーションズ ホールディング インコーポレイテッド 送信機及びその電力増幅回路
US5774017A (en) * 1996-06-03 1998-06-30 Anadigics, Inc. Multiple-band amplifier
JPH1093471A (ja) * 1996-09-11 1998-04-10 Murata Mfg Co Ltd 信号切換えスイッチ
JP3811557B2 (ja) * 1997-10-21 2006-08-23 松下電器産業株式会社 複数周波数帯域高効率線形電力増幅器
DE19823060C2 (de) * 1998-05-22 2001-02-22 Ericsson Telefon Ab L M Leistungsverstärker-Ausgangsschaltung

Also Published As

Publication number Publication date
JP2002016448A (ja) 2002-01-18
EP1156582A2 (en) 2001-11-21
CN1324147A (zh) 2001-11-28
EP1156582A3 (en) 2004-04-28

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired