IT7948701A0 - Perfezionamento nei circuiti amplificatori rf protetti da inappropria ti carichi di antenna - Google Patents

Perfezionamento nei circuiti amplificatori rf protetti da inappropria ti carichi di antenna

Info

Publication number
IT7948701A0
IT7948701A0 IT7948701A IT4870179A IT7948701A0 IT 7948701 A0 IT7948701 A0 IT 7948701A0 IT 7948701 A IT7948701 A IT 7948701A IT 4870179 A IT4870179 A IT 4870179A IT 7948701 A0 IT7948701 A0 IT 7948701A0
Authority
IT
Italy
Prior art keywords
improvement
amplifier circuits
circuits protected
antenna loads
inappropriate
Prior art date
Application number
IT7948701A
Other languages
English (en)
Other versions
IT1162469B (it
Original Assignee
Rockwell International 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.)
Filing date
Publication date
Application filed by Rockwell International Corp filed Critical Rockwell International Corp
Publication of IT7948701A0 publication Critical patent/IT7948701A0/it
Application granted granted Critical
Publication of IT1162469B publication Critical patent/IT1162469B/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • 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
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • 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
    • H04B1/0466—Fault detection or indication
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/204—A hybrid coupler being used at the output of an amplifier circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/429—Two or more amplifiers or one amplifier with filters for different frequency bands are coupled in parallel at the input or output
    • 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
    • H03F2203/20—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F2203/21—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F2203/211—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • H03F2203/21157—A filter circuit being added at the output of a power amplifier stage
IT48701/79A 1978-04-17 1979-04-11 Perfezionamento nei circuiti amplificatori rf protetti da inappropriati carichi di antenna IT1162469B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/896,650 US4165493A (en) 1978-04-17 1978-04-17 Protected amplifier apparatus

Publications (2)

Publication Number Publication Date
IT7948701A0 true IT7948701A0 (it) 1979-04-11
IT1162469B IT1162469B (it) 1987-04-01

Family

ID=25406569

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48701/79A IT1162469B (it) 1978-04-17 1979-04-11 Perfezionamento nei circuiti amplificatori rf protetti da inappropriati carichi di antenna

Country Status (7)

Country Link
US (1) US4165493A (it)
JP (1) JPS5823774B2 (it)
CA (1) CA1134918A (it)
DE (1) DE2912757A1 (it)
FR (1) FR2423919A1 (it)
GB (1) GB2019142B (it)
IT (1) IT1162469B (it)

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110327Y2 (it) * 1980-01-10 1986-04-03
US4335469A (en) * 1980-06-18 1982-06-15 Westinghouse Electric Corp. Method and system for radiating RF power from a trailing wire antenna
US4375051A (en) * 1981-02-19 1983-02-22 The Perkin-Elmer Corporation Automatic impedance matching between source and load
US4370622A (en) * 1981-03-23 1983-01-25 Rockwell International Corporation IMD Limiter
US4422047A (en) * 1981-11-23 1983-12-20 E-Systems, Inc. Solid state autotune power amplifier
DE3310389A1 (de) * 1983-03-22 1984-10-11 Siemens AG, 1000 Berlin und 8000 München Breitbandiger sender fuer kurze elektromagnetische wellen
US4547746A (en) * 1984-04-09 1985-10-15 Rockwell International Corporation VSWR Tolerant linear power amplifier
IN165870B (it) * 1985-06-25 1990-02-03 Siemens Ag
JPH0317482Y2 (it) * 1986-02-21 1991-04-12
FR2595889B1 (fr) * 1986-03-14 1988-05-06 Havel Christophe Dispositif de controle de puissance d'emission dans une station emettrice-receptrice de radiocommunication
JPS6319473U (it) * 1986-07-24 1988-02-08
US4740996A (en) * 1986-11-17 1988-04-26 Amp Incorporated Temperature independent, low level, AM modem receiver
GB2204202B (en) * 1987-04-28 1991-11-27 Racal Communications Equip Radio transmitters
DE3918159A1 (de) * 1989-06-03 1990-12-06 Telefunken Systemtechnik Leistungsregelanordnung
GB2233515B (en) * 1989-06-20 1993-12-15 Technophone Ltd Levelling control circuit
US5276912A (en) * 1990-02-06 1994-01-04 Motorola, Inc. Radio frequency power amplifier having variable output power
DE479168T1 (de) * 1990-10-01 1992-11-26 Murata Mfg. Co., Ltd., Nagaokakyo, Kyoto, Jp Antennenueberwachungsapparat mit welligkeitsfaktor-mess-einheit.
EP0495141B1 (de) * 1991-01-16 1994-09-07 Siemens Aktiengesellschaft Amplitudenregeleinrichtung
JPH04352528A (ja) * 1991-05-30 1992-12-07 Matsushita Electric Ind Co Ltd 高周波電力増幅装置
GB2257860B (en) * 1991-07-06 1995-09-20 Racal Communications Syst Ltd Amplification systems
US5196808A (en) * 1991-12-02 1993-03-23 Motorola, Inc. RF amplifier protector and method
EP0552039A1 (en) * 1992-01-17 1993-07-21 Gec-Marconi Limited Transmitter tuning
US5524275A (en) * 1993-12-17 1996-06-04 Ericsson Ge Mobile Communications Inc. Averaged RF exposure control
US5710981A (en) * 1995-05-23 1998-01-20 Ericsson Inc. Portable radio power control device and method using incrementally degraded received signals
US5913154A (en) * 1997-04-18 1999-06-15 Ericsson, Inc. VSWR control technique for terminal products with linear modulation
US5977831A (en) * 1998-04-03 1999-11-02 Cbs Corporation Hybrid system for control and monitoring of an amplifier
US6188277B1 (en) * 1998-08-19 2001-02-13 Harris Corporation Power amplifier having monitoring and circuit protection
US6525605B2 (en) * 1998-08-19 2003-02-25 Harris Corporation Power amplifier system having frequency and amplifier failure compensation
US6349216B1 (en) 1999-07-22 2002-02-19 Motorola, Inc. Load envelope following amplifier system
US6160449A (en) * 1999-07-22 2000-12-12 Motorola, Inc. Power amplifying circuit with load adjust for control of adjacent and alternate channel power
US6166598A (en) * 1999-07-22 2000-12-26 Motorola, Inc. Power amplifying circuit with supply adjust to control adjacent and alternate channel power
US6438360B1 (en) 1999-07-22 2002-08-20 Motorola, Inc. Amplifier system with load control to produce an amplitude envelope
WO2002031967A2 (en) 2000-10-10 2002-04-18 California Institute Of Technology Distributed circular geometry power amplifier architecture
US6856199B2 (en) 2000-10-10 2005-02-15 California Institute Of Technology Reconfigurable distributed active transformers
GB2368737B (en) * 2000-10-31 2004-11-10 Roke Manor Research Method and apparatus for controlling an amplifier
JP2002280843A (ja) * 2001-03-21 2002-09-27 Pioneer Electronic Corp 電力増幅装置
US6828859B2 (en) * 2001-08-17 2004-12-07 Silicon Laboratories, Inc. Method and apparatus for protecting devices in an RF power amplifier
FI115875B (fi) * 2001-12-10 2005-07-29 Jorma Kullervo Romunen Pienjänniteverkon tiedonsiirtojärjestelmän tasonsäätö leikkausperiaatteella
TWI326967B (en) 2002-03-11 2010-07-01 California Inst Of Techn Differential amplifier
US6894565B1 (en) 2002-12-03 2005-05-17 Silicon Laboratories, Inc. Fast settling power amplifier regulator
US6897730B2 (en) * 2003-03-04 2005-05-24 Silicon Laboratories Inc. Method and apparatus for controlling the output power of a power amplifier
DE10337829A1 (de) * 2003-08-18 2005-03-17 Siemens Ag Vorrichtung und Verfahren zur Begrenzung der Fehlanpassung von Endstufen
DE60305505T2 (de) * 2003-10-23 2007-04-26 Sony Ericsson Mobile Communications Ab Leistungssteuerungsschaltkreis für eine mobile Endgeräteanwendung
US20060057980A1 (en) * 2004-08-04 2006-03-16 Interdigital Technology Corporation Transmitter circuit with modulated power amplifier bias control based on RF carrier envelope tracking
US7834813B2 (en) 2004-10-15 2010-11-16 Skycross, Inc. Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness
US7663555B2 (en) * 2004-10-15 2010-02-16 Sky Cross Inc. Method and apparatus for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness
US8000737B2 (en) * 2004-10-15 2011-08-16 Sky Cross, Inc. Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness
JP4769657B2 (ja) * 2006-07-28 2011-09-07 京セラ株式会社 無線通信方法及び無線通信端末
JP4829049B2 (ja) * 2006-08-30 2011-11-30 京セラ株式会社 無線通信方法及び無線基地局
US7733176B2 (en) * 2006-09-08 2010-06-08 Infineon Technologies Ag System and method for power amplifier output power control
US7486137B2 (en) * 2006-09-08 2009-02-03 Axiom Microdevices, Inc. System and method for power amplifier output power control
US8606200B2 (en) * 2007-06-26 2013-12-10 Intel Corporation Error vector magnitude control within a linear transmitter
US7710197B2 (en) * 2007-07-11 2010-05-04 Axiom Microdevices, Inc. Low offset envelope detector and method of use
KR101547879B1 (ko) 2008-04-11 2015-09-04 버드 테크놀로지 그룹 인크. 송신기 전력 모니터
US8908750B2 (en) * 2009-03-31 2014-12-09 Silicon Laboratories Inc. Circuit device including peak and average detectors
US8774743B2 (en) * 2009-10-14 2014-07-08 Blackberry Limited Dynamic real-time calibration for antenna matching in a radio frequency receiver system
DE102011106234A1 (de) * 2011-06-27 2012-12-27 Tesat-Spacecom Gmbh & Co.Kg Verfahren und Vorrichtung zum Schutz eines Hochfrequenz-Leistungsverstärkers gegen Fehlabschluss
EP2781030B1 (en) 2011-11-14 2015-10-21 BlackBerry Limited Perturbation-based dynamic measurement of antenna impedance in real-time
US9077426B2 (en) 2012-10-31 2015-07-07 Blackberry Limited Adaptive antenna matching via a transceiver-based perturbation technique
CN113809993B (zh) * 2021-11-18 2022-03-04 成都市卫莱科技有限公司 一种针对功放的工作信号监测控制装置、系统及方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3929333Y1 (it) * 1963-12-24 1964-10-06
US3345570A (en) * 1965-05-26 1967-10-03 Rca Corp Transistor protection circuit for radio transmitter
US3366883A (en) * 1965-12-20 1968-01-30 Avco Corp Automatic broad band vswr power control
US3449680A (en) * 1966-03-29 1969-06-10 Motorola Inc Transistor protection circuit
FR1492932A (fr) * 1966-05-11 1967-08-25 Cit Alcatel Réglage automatique de la puissance d'un organe amplificateur
US3510790A (en) * 1967-11-14 1970-05-05 Motorola Inc Semiconductor protection system
US3641451A (en) * 1970-02-24 1972-02-08 Motorola Inc Amplifier protection circuit
US3852669A (en) * 1973-06-26 1974-12-03 Us Army Circuit to protect rf output amplifier against mismatch damage
JPS5436433Y2 (it) * 1974-10-04 1979-11-02
US4019150A (en) * 1975-11-17 1977-04-19 Motorola, Inc. PA protection circuit for a single sideband radio

Also Published As

Publication number Publication date
JPS5823774B2 (ja) 1983-05-17
US4165493A (en) 1979-08-21
FR2423919A1 (fr) 1979-11-16
CA1134918A (en) 1982-11-02
GB2019142A (en) 1979-10-24
JPS54145418A (en) 1979-11-13
IT1162469B (it) 1987-04-01
DE2912757A1 (de) 1979-10-18
GB2019142B (en) 1982-06-03

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