ATE131673T1 - Schaltung zur bildung niedriger leistungspegel in einem funktelefonsender - Google Patents

Schaltung zur bildung niedriger leistungspegel in einem funktelefonsender

Info

Publication number
ATE131673T1
ATE131673T1 AT90304937T AT90304937T ATE131673T1 AT E131673 T1 ATE131673 T1 AT E131673T1 AT 90304937 T AT90304937 T AT 90304937T AT 90304937 T AT90304937 T AT 90304937T AT E131673 T1 ATE131673 T1 AT E131673T1
Authority
AT
Austria
Prior art keywords
power levels
low power
radio telephone
circuit
telephone transmitter
Prior art date
Application number
AT90304937T
Other languages
English (en)
Inventor
Risto Vaisanen
Jukka Sarasmo
Vesa Pekkarinen
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
Application granted granted Critical
Publication of ATE131673T1 publication Critical patent/ATE131673T1/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/72—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H03F2203/7239—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by putting into parallel or not, by choosing between amplifiers and shunting lines by one or more switch(es)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0416—Circuits with power amplifiers having gain or transmission power control

Landscapes

  • Transmitters (AREA)
  • Amplifiers (AREA)
  • Near-Field Transmission Systems (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
AT90304937T 1989-05-12 1990-05-08 Schaltung zur bildung niedriger leistungspegel in einem funktelefonsender ATE131673T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI892314A FI81931C (fi) 1989-05-12 1989-05-12 Foerfarande foer alstring av laoga effektnivaoer i saendaren av en radiotelefon.

Publications (1)

Publication Number Publication Date
ATE131673T1 true ATE131673T1 (de) 1995-12-15

Family

ID=8528419

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90304937T ATE131673T1 (de) 1989-05-12 1990-05-08 Schaltung zur bildung niedriger leistungspegel in einem funktelefonsender

Country Status (5)

Country Link
US (1) US5152004A (de)
EP (1) EP0397445B1 (de)
AT (1) ATE131673T1 (de)
DE (1) DE69024096T2 (de)
FI (1) FI81931C (de)

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US5278519A (en) * 1991-11-13 1994-01-11 Ericsson Ge Mobile Communications Inc. Method and apparatus for controlling RF spectral splatter into adjacent channels when activating an RF transmitter
GB2296145B (en) * 1994-12-15 1999-09-22 Nokia Mobile Phones Ltd Radio transmitters and methods of operation
FI101505B1 (fi) * 1995-05-10 1998-06-30 Nokia Mobile Phones Ltd Menetelmä suuntakytkimellä toteutetun tehonmittauksen parantamiseksi pienillä tehotasoilla
US5661434A (en) * 1995-05-12 1997-08-26 Fujitsu Compound Semiconductor, Inc. High efficiency multiple power level amplifier circuit
JPH09148852A (ja) * 1995-11-24 1997-06-06 Matsushita Electric Ind Co Ltd 送信出力可変装置
JP3727431B2 (ja) * 1995-12-08 2005-12-14 シャープ株式会社 送話器、それを用いた電話機
US5974041A (en) * 1995-12-27 1999-10-26 Qualcomm Incorporated Efficient parallel-stage power amplifier
US5872481A (en) * 1995-12-27 1999-02-16 Qualcomm Incorporated Efficient parallel-stage power amplifier
SE506842C2 (sv) * 1996-06-28 1998-02-16 Ericsson Telefon Ab L M Anordning och förfarande vid radiosändare för styrning av effektförstärkare
US5752172A (en) * 1996-08-16 1998-05-12 Nokia Mobile Phones Limited Distributed transmitter output power control circuit and method for a radio telephone
FI963389A7 (fi) * 1996-08-30 1998-03-01 Nokia Corp Käsipuhelimen opastusjärjestelmä
KR100193842B1 (ko) * 1996-09-13 1999-06-15 윤종용 무선통신시스템의 전력조절 회로 및 방법
BR9712974A (pt) * 1996-09-30 2002-01-02 Qualcomm Inc Método e equipamento para aumentar a imunidade de receptores à interferência
FI106759B (fi) 1996-11-13 2001-03-30 Nokia Mobile Phones Ltd Matkaviestimen lähetystehon rajoitinjärjestelmä
US6173160B1 (en) 1996-11-18 2001-01-09 Nokia Mobile Phones Limited Mobile station having drift-free pulsed power detection method and apparatus
JPH10173453A (ja) * 1996-12-09 1998-06-26 Sony Corp 高周波可変利得増幅装置および無線通信装置
FI108177B (fi) 1997-01-03 2001-11-30 Nokia Mobile Phones Ltd Matkaviestinlaitteiden lähetin
US6208846B1 (en) * 1997-01-13 2001-03-27 Lucent Technologies, Inc. Method and apparatus for enhancing transmitter circuit efficiency of mobile radio units by selectable switching of power amplifier
US5884149A (en) * 1997-02-13 1999-03-16 Nokia Mobile Phones Limited Mobile station having dual band RF detector and gain control
DE19705735A1 (de) * 1997-02-14 1998-08-20 Nokia Mobile Phones Ltd Verfahren und Vorrichtung zur Inspektion wenigstens eines Antennenzweigs, insbesondere in einem Fahrzeug
US6069525A (en) * 1997-04-17 2000-05-30 Qualcomm Incorporated Dual-mode amplifier with high efficiency and high linearity
KR100247013B1 (ko) 1997-12-19 2000-03-15 윤종용 무선 송신기의 전력 제어 장치
FI105611B (fi) * 1998-03-13 2000-09-15 Nokia Mobile Phones Ltd Radiotajuusvahvistimet
GB9811382D0 (en) 1998-05-27 1998-07-22 Nokia Mobile Phones Ltd A transmitter
GB9811381D0 (en) 1998-05-27 1998-07-22 Nokia Mobile Phones Ltd Predistortion control for power reduction
GB2339113B (en) 1998-06-30 2003-05-21 Nokia Mobile Phones Ltd Data transmission in tdma system
US6069526A (en) * 1998-08-04 2000-05-30 Qualcomm Incorporated Partial or complete amplifier bypass
FI114261B (fi) * 2000-09-12 2004-09-15 Nokia Corp Lähetin ja langaton viestintälaite
KR100518938B1 (ko) * 2003-01-03 2005-10-05 주식회사 웨이브아이씨스 고효율 다중 모드 전력 증폭 장치
KR20040062783A (ko) * 2003-01-03 2004-07-09 주식회사 케이티 Ｔｄｓｌ 기반 ｔ-ｌａｎ 전송장치에 의한 누화간섭 영향저감 장치
US7161422B2 (en) * 2003-01-03 2007-01-09 Junghyun Kim Multiple power mode amplifier with bias modulation option and without bypass switches
US7023270B2 (en) * 2003-01-03 2006-04-04 Junghyun Kim High efficiency power amplifier
DE102004026168A1 (de) * 2004-05-28 2005-12-22 Siemens Ag Verfahren zur Einstellung einer gewünschten Abstrahlleistung für die Antenne eines Funkkommunikationsgeräts sowie Funkkommunikationsgerät
KR100704686B1 (ko) * 2004-09-14 2007-04-06 아바고테크놀로지스코리아 주식회사 다이오드 전압제어를 통한 전력증폭기의 온도보상회로
KR100654646B1 (ko) * 2004-10-11 2006-12-08 아바고테크놀로지스코리아 주식회사 전력증폭기의 온도보상 바이어스 회로
US7382186B2 (en) * 2005-01-24 2008-06-03 Triquint Semiconductor, Inc. Amplifiers with high efficiency in multiple power modes
US7385445B2 (en) * 2005-07-21 2008-06-10 Triquint Semiconductor, Inc. High efficiency amplifier circuits having bypass paths
US20070080750A1 (en) * 2005-08-31 2007-04-12 Triquint Semiconductor, Inc. High efficiency amplifiers having multiple amplification paths
US7616054B2 (en) * 2007-01-09 2009-11-10 Avago Technologies Wireless Ip (Singapore) Pte. Ltd. Multiple output power mode amplifier
US7554392B2 (en) * 2007-04-24 2009-06-30 Avago Technologies Wireless Ip (Singapore) Pte. Ltd. Multiple output power mode amplifier
US8462684B1 (en) 2008-05-19 2013-06-11 Marvell International Ltd. Power saving technique for a wireless device
US8095091B1 (en) * 2007-05-18 2012-01-10 Marvell International Ltd. Transmit power amplification control for wireless device
US8583190B1 (en) 2007-05-18 2013-11-12 Marvell International Ltd. Power saving technique for a wireless device
US7982543B1 (en) 2009-03-30 2011-07-19 Triquint Semiconductor, Inc. Switchable power amplifier
US8536950B2 (en) * 2009-08-03 2013-09-17 Qualcomm Incorporated Multi-stage impedance matching
US8102205B2 (en) 2009-08-04 2012-01-24 Qualcomm, Incorporated Amplifier module with multiple operating modes
US8207798B1 (en) 2009-09-09 2012-06-26 Triquint Semiconductor, Inc. Matching network with switchable capacitor bank
US8536949B1 (en) 2009-10-22 2013-09-17 Sprint Communications Company L.P. Variable power amplifier system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110327Y2 (de) * 1980-01-10 1986-04-03
US4439744A (en) * 1981-12-24 1984-03-27 Rca Corporation Variable power amplifier
US4560949A (en) * 1982-09-27 1985-12-24 Rockwell International Corporation High speed AGC circuit
US4523155A (en) * 1983-05-04 1985-06-11 Motorola, Inc. Temperature compensated automatic output control circuitry for RF signal power amplifiers with wide dynamic range
US4646036A (en) * 1985-12-23 1987-02-24 Motorola, Inc. Signal attenuation circuit
JP2667388B2 (ja) * 1986-02-28 1997-10-27 株式会社東芝 自動電力制御装置
DE3742270C1 (en) * 1987-12-12 1989-02-23 Ant Nachrichtentech Control stage for a radio-frequency power amplifier
GB8826918D0 (en) * 1988-11-17 1988-12-21 Motorola Inc Power amplifier for radio frequency signal
US4985686A (en) * 1989-12-04 1991-01-15 Motorola, Inc. Active load impedance control system for radio frequency power amplifiers

Also Published As

Publication number Publication date
DE69024096D1 (de) 1996-01-25
FI892314A0 (fi) 1989-05-12
EP0397445A3 (de) 1992-01-15
US5152004A (en) 1992-09-29
FI81931B (fi) 1990-08-31
FI81931C (fi) 1990-12-10
EP0397445B1 (de) 1995-12-13
EP0397445A2 (de) 1990-11-14
DE69024096T2 (de) 1996-05-30

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EELA Cancelled due to lapse of time