AR223488A1 - Un aparato para adaptar automaticamente la impedancia nominal verdadera de un transmisor de radiofrecuencia a una antena - Google Patents

Un aparato para adaptar automaticamente la impedancia nominal verdadera de un transmisor de radiofrecuencia a una antena

Info

Publication number
AR223488A1
AR223488A1 AR276574A AR27657479A AR223488A1 AR 223488 A1 AR223488 A1 AR 223488A1 AR 276574 A AR276574 A AR 276574A AR 27657479 A AR27657479 A AR 27657479A AR 223488 A1 AR223488 A1 AR 223488A1
Authority
AR
Argentina
Prior art keywords
antenna
radio frequency
frequency transmitter
automatically adapt
nominal impedance
Prior art date
Application number
AR276574A
Other languages
English (en)
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of AR223488A1 publication Critical patent/AR223488A1/es

Links

Classifications

    • 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
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H03H7/40—Automatic matching of load impedance to source impedance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
    • H03J2200/10—Tuning of a resonator by means of digitally controlled capacitor bank

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
AR276574A 1978-05-24 1979-05-18 Un aparato para adaptar automaticamente la impedancia nominal verdadera de un transmisor de radiofrecuencia a una antena AR223488A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/909,155 US4201960A (en) 1978-05-24 1978-05-24 Method for automatically matching a radio frequency transmitter to an antenna

Publications (1)

Publication Number Publication Date
AR223488A1 true AR223488A1 (es) 1981-08-31

Family

ID=25426720

Family Applications (1)

Application Number Title Priority Date Filing Date
AR276574A AR223488A1 (es) 1978-05-24 1979-05-18 Un aparato para adaptar automaticamente la impedancia nominal verdadera de un transmisor de radiofrecuencia a una antena

Country Status (11)

Country Link
US (1) US4201960A (es)
EP (1) EP0005592B1 (es)
JP (1) JPS5854685B2 (es)
AR (1) AR223488A1 (es)
AU (1) AU527683B2 (es)
BR (1) BR7903232A (es)
CA (1) CA1110707A (es)
DE (1) DE2966885D1 (es)
DK (1) DK157516C (es)
IL (1) IL57185A (es)
ZA (1) ZA791990B (es)

Families Citing this family (145)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335469A (en) * 1980-06-18 1982-06-15 Westinghouse Electric Corp. Method and system for radiating RF power from a trailing wire antenna
DE3033407A1 (de) * 1980-09-05 1982-04-22 Robert Bosch Gmbh, 7000 Stuttgart Sprechfunkgeraet
JPS5851453B2 (ja) * 1980-09-29 1983-11-16 日本電信電話株式会社 送信装置
US4380767A (en) * 1980-10-27 1983-04-19 Texas Instruments Incorporated Controlled antenna tuner
GB2100932B (en) * 1981-06-18 1986-06-11 Charles Edward Cooper Antenna.
US4486722A (en) * 1982-02-18 1984-12-04 Rockwell International Corporation Pin diode switched impedance matching network having diode driver circuits transparent to RF potential
US4485360A (en) * 1982-07-16 1984-11-27 Cincinnati Electronics Corporation Apparatus for and method of impedance matching
JPS5950619A (ja) * 1982-09-16 1984-03-23 Yaesu Musen Co Ltd アンテナ回路自動整合方式
US4513254A (en) * 1983-05-16 1985-04-23 International Business Machines Corporation Integrated circuit filter with adjustable characteristics
JPS6018022A (ja) * 1983-07-09 1985-01-30 Yaesu Musen Co Ltd アンテナカツプラ
JPS6018021A (ja) * 1983-07-09 1985-01-30 Yaesu Musen Co Ltd アンテナカツプラ
JPS6080360U (ja) * 1983-11-04 1985-06-04 株式会社光電製作所 センス信号移相定数自動選択式無線方向探知機
FR2573940B1 (fr) * 1984-11-23 1987-06-12 Thomson Csf Dispositif de reglage automatique de la cellule d'adaptation d'une antenne sur sa frequence de travail
FR2574597B1 (fr) * 1984-12-06 1986-12-26 Commissariat Energie Atomique Dispositif d'accord d'antenne haute frequence
JPS61140640U (es) * 1985-02-22 1986-08-30
US4612669A (en) * 1985-04-30 1986-09-16 Rca Corporation Antenna matching system
JPH0683081B2 (ja) * 1985-05-29 1994-10-19 日本無線株式会社 自動整合方法
IN164328B (es) * 1985-07-03 1989-02-18 Siemens Ag
JPS6262624A (ja) * 1985-09-12 1987-03-19 Yaesu Musen Co Ltd アンテナ整合器
US4682176A (en) * 1986-03-12 1987-07-21 The United States Of America As Represented By The Secretary Of The Air Force Active matching transmit/receive module
GB2188202B (en) * 1986-03-19 1989-12-06 Marconi Co Ltd High power systems
DE3644477C2 (de) * 1986-12-24 1995-11-02 Daimler Benz Aerospace Ag Verfahren zur Impedanztransformation
DE3644476C2 (de) * 1986-12-24 1995-11-02 Daimler Benz Aerospace Ag Verfahren zur Impedanztransformation
DE3709169A1 (de) * 1987-03-20 1988-09-29 Standard Elektrik Lorenz Ag Antennenkoppler
US4855695A (en) * 1988-04-29 1989-08-08 E. I. Du Pont De Nemours & Company Automated microwave tuning system for de-emulsifier systems
US5243356A (en) * 1988-08-05 1993-09-07 Seiko Epson Corporation Antenna circuit and wrist radio instrument
US5128686A (en) * 1989-01-23 1992-07-07 Motorola, Inc. Reactance buffered loop antenna and method for making the same
US5231355A (en) * 1990-06-18 1993-07-27 The Charles Machine Works, Inc. Locator transmitter having an automatically tuned antenna
DE69231537T2 (de) * 1991-02-19 2001-06-07 Nec Corp Funkrufempfänger
DE69217147T2 (de) * 1991-09-04 1997-06-05 Nec Corp Funksendeempfänger
US5491715A (en) * 1993-06-28 1996-02-13 Texas Instruments Deutschland Gmbh Automatic antenna tuning method and circuit
US5424691A (en) * 1994-02-03 1995-06-13 Sadinsky; Samuel Apparatus and method for electronically controlled admittance matching network
US6150896A (en) * 1994-12-19 2000-11-21 Bh Electronics, Inc. Coupling device connecting an unbalanced signal line to a balanced signal line
US5495212A (en) * 1994-12-19 1996-02-27 Bh Electronics, Inc. Coupling device connecting an unbalanced signal line to a balanced signal line
US6393264B1 (en) * 1995-09-15 2002-05-21 Siemens Aktiengesellschaft Radio terminal apparatus
US5631611A (en) * 1996-06-18 1997-05-20 Nautel Limited Automatic matching and tuning network
US6362737B1 (en) 1998-06-02 2002-03-26 Rf Code, Inc. Object Identification system with adaptive transceivers and methods of operation
DE19644339C1 (de) * 1996-10-25 1998-06-10 Bosch Gmbh Robert Vorrichtung zur Transformation einer Antennenimpedanz
US8779322B2 (en) 1997-06-26 2014-07-15 Mks Instruments Inc. Method and apparatus for processing metal bearing gases
US6150628A (en) * 1997-06-26 2000-11-21 Applied Science And Technology, Inc. Toroidal low-field reactive gas source
US6924455B1 (en) 1997-06-26 2005-08-02 Applied Science & Technology, Inc. Integrated plasma chamber and inductively-coupled toroidal plasma source
US7166816B1 (en) 1997-06-26 2007-01-23 Mks Instruments, Inc. Inductively-coupled torodial plasma source
US7569790B2 (en) * 1997-06-26 2009-08-04 Mks Instruments, Inc. Method and apparatus for processing metal bearing gases
US6351215B2 (en) 1998-06-02 2002-02-26 Rf Code, Inc. Monitoring antenna system
US6317027B1 (en) * 1999-01-12 2001-11-13 Randy Watkins Auto-tunning scanning proximity reader
US6307468B1 (en) * 1999-07-20 2001-10-23 Avid Identification Systems, Inc. Impedance matching network and multidimensional electromagnetic field coil for a transponder interrogator
JP4652499B2 (ja) * 1999-07-29 2011-03-16 株式会社ダイヘン インピーダンス自動整合方法及び整合装置
US6424232B1 (en) * 1999-11-30 2002-07-23 Advanced Energy's Voorhees Operations Method and apparatus for matching a variable load impedance with an RF power generator impedance
GB2380638B (en) 2000-05-22 2004-05-12 Avery Dennison Corp Trackable files and systems for using the same
US7865154B2 (en) * 2000-07-20 2011-01-04 Paratek Microwave, Inc. Tunable microwave devices with auto-adjusting matching circuit
WO2002009226A1 (en) * 2000-07-20 2002-01-31 Paratek Microwave, Inc. Tunable microwave devices with auto-adjusting matching circuit
US8064188B2 (en) 2000-07-20 2011-11-22 Paratek Microwave, Inc. Optimized thin film capacitors
US8744384B2 (en) 2000-07-20 2014-06-03 Blackberry Limited Tunable microwave devices with auto-adjusting matching circuit
US6887339B1 (en) 2000-09-20 2005-05-03 Applied Science And Technology, Inc. RF power supply with integrated matching network
EP1365507A1 (en) * 2002-05-22 2003-11-26 Lucent Technologies Inc. Universal tuning and matching device
JP4027935B2 (ja) * 2002-11-01 2007-12-26 富士通株式会社 制御装置および制御方法
DE10353613A1 (de) * 2003-11-17 2005-06-23 Feig Electronic Gmbh Vorrichtung zum Einstellen und zur Steuerung einer RFID-Antenne sowie Verfahren zum Einstellen einer RFID-Antenne
EP1538557B1 (fr) * 2003-12-05 2013-02-13 STMicroelectronics S.A. Modulation résistive et capacitive dans un transpondeur électromagnétique
SE0400801D0 (sv) * 2004-03-26 2004-03-26 Asperation Oy Antennanordning
JP2006121444A (ja) * 2004-10-21 2006-05-11 Nec Access Technica Ltd 自動調整回路、自動調整方法、及び携帯端末
GB2420923B (en) * 2004-11-15 2007-05-02 Motorola Inc Amplifier circuit
US20070004344A1 (en) * 2005-06-29 2007-01-04 Degroot Robert J Wireless device and system for discriminating different operating environments
FI20055420A0 (fi) * 2005-07-25 2005-07-25 Lk Products Oy Säädettävä monikaista antenni
FI119009B (fi) 2005-10-03 2008-06-13 Pulse Finland Oy Monikaistainen antennijärjestelmä
FI118782B (fi) 2005-10-14 2008-03-14 Pulse Finland Oy Säädettävä antenni
US9406444B2 (en) 2005-11-14 2016-08-02 Blackberry Limited Thin film capacitors
KR100752280B1 (ko) * 2005-12-14 2007-08-28 삼성전자주식회사 휴대단말기의 안테나주파수 자동매칭 장치
US8325097B2 (en) 2006-01-14 2012-12-04 Research In Motion Rf, Inc. Adaptively tunable antennas and method of operation therefore
US8125399B2 (en) 2006-01-14 2012-02-28 Paratek Microwave, Inc. Adaptively tunable antennas incorporating an external probe to monitor radiated power
US7711337B2 (en) 2006-01-14 2010-05-04 Paratek Microwave, Inc. Adaptive impedance matching module (AIMM) control architectures
EP1997224A1 (en) * 2006-03-09 2008-12-03 Nxp B.V. Radio receiver
US8618990B2 (en) 2011-04-13 2013-12-31 Pulse Finland Oy Wideband antenna and methods
KR100726260B1 (ko) 2006-08-07 2007-06-08 삼성전자주식회사 통신 장치의 정합 제어 장치 및 방법
US8081940B2 (en) * 2006-09-29 2011-12-20 Broadcom Corporation Method and system for dynamically tuning and calibrating an antenna using an on-chip digitally controlled array of capacitors
US7714676B2 (en) 2006-11-08 2010-05-11 Paratek Microwave, Inc. Adaptive impedance matching apparatus, system and method
US8299867B2 (en) * 2006-11-08 2012-10-30 Research In Motion Rf, Inc. Adaptive impedance matching module
US7535312B2 (en) 2006-11-08 2009-05-19 Paratek Microwave, Inc. Adaptive impedance matching apparatus, system and method with improved dynamic range
US7813777B2 (en) * 2006-12-12 2010-10-12 Paratek Microwave, Inc. Antenna tuner with zero volts impedance fold back
US9130274B1 (en) * 2007-03-22 2015-09-08 Board Of Education, State Of Rhode Island And Providence Plantations Systems and methods for providing distributed load monopole antenna systems
FI20075269A0 (fi) * 2007-04-19 2007-04-19 Pulse Finland Oy Menetelmä ja järjestely antennin sovittamiseksi
US7917104B2 (en) 2007-04-23 2011-03-29 Paratek Microwave, Inc. Techniques for improved adaptive impedance matching
US8213886B2 (en) 2007-05-07 2012-07-03 Paratek Microwave, Inc. Hybrid techniques for antenna retuning utilizing transmit and receive power information
US7973645B1 (en) * 2007-05-25 2011-07-05 Impinj, Inc. RFID reader devices and methods thereof
FI120427B (fi) 2007-08-30 2009-10-15 Pulse Finland Oy Säädettävä monikaista-antenni
EP2195880A4 (en) * 2007-09-24 2013-02-13 Cooper Tire & Rubber Co AUTOMATIC ANTENNA TUNING SYSTEM FOR RFID
US7991363B2 (en) 2007-11-14 2011-08-02 Paratek Microwave, Inc. Tuning matching circuits for transmitter and receiver bands as a function of transmitter metrics
NO328610B1 (no) * 2008-05-08 2010-03-29 Comrod As Overforingsenhet for radiofrekvenssignal og fremgangsmate for alternativt a anvende en elektrisk antenne eller en magnetisk antenne med en klassisk antennetuner
EP2151921B1 (en) * 2008-08-07 2013-10-02 Epcos AG Dynamic impedance matching network and method for matching an impedance between a source and a load
US8072285B2 (en) 2008-09-24 2011-12-06 Paratek Microwave, Inc. Methods for tuning an adaptive impedance matching network with a look-up table
US8067858B2 (en) * 2008-10-14 2011-11-29 Paratek Microwave, Inc. Low-distortion voltage variable capacitor assemblies
US8072272B2 (en) * 2009-08-19 2011-12-06 Qualcomm, Incorporated Digital tunable inter-stage matching circuit
US8472888B2 (en) 2009-08-25 2013-06-25 Research In Motion Rf, Inc. Method and apparatus for calibrating a communication device
US9026062B2 (en) 2009-10-10 2015-05-05 Blackberry Limited Method and apparatus for managing operations of a communication device
US8204446B2 (en) * 2009-10-29 2012-06-19 Motorola Mobility, Inc. Adaptive antenna tuning systems and methods
FI20096134A0 (fi) 2009-11-03 2009-11-03 Pulse Finland Oy Säädettävä antenni
FI20096251A0 (sv) 2009-11-27 2009-11-27 Pulse Finland Oy MIMO-antenn
DE102010028991B4 (de) * 2009-12-03 2014-12-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Passiver Transponder für ein RFID-System und Verfahren zum Übertragen von Daten von/zu einer Datenquelle eines solchen passiven Transponders
US8847833B2 (en) 2009-12-29 2014-09-30 Pulse Finland Oy Loop resonator apparatus and methods for enhanced field control
FI20105158A (fi) 2010-02-18 2011-08-19 Pulse Finland Oy Kuorisäteilijällä varustettu antenni
US8803631B2 (en) 2010-03-22 2014-08-12 Blackberry Limited Method and apparatus for adapting a variable impedance network
US8754826B2 (en) * 2010-04-15 2014-06-17 Sony Corporation Antenna device and radio communication apparatus
US8860525B2 (en) 2010-04-20 2014-10-14 Blackberry Limited Method and apparatus for managing interference in a communication device
US9406998B2 (en) 2010-04-21 2016-08-02 Pulse Finland Oy Distributed multiband antenna and methods
JP5489225B2 (ja) * 2010-06-24 2014-05-14 株式会社ネットコムセック アンテナ整合回路
KR101176286B1 (ko) * 2010-08-02 2012-08-22 엘지이노텍 주식회사 Ｓｗｒ 정보를 이용한 임피던스 매칭장치 및 방법
US9379454B2 (en) 2010-11-08 2016-06-28 Blackberry Limited Method and apparatus for tuning antennas in a communication device
FI20115072A0 (fi) 2011-01-25 2011-01-25 Pulse Finland Oy Moniresonanssiantenni, -antennimoduuli ja radiolaite
US9673507B2 (en) 2011-02-11 2017-06-06 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US8648752B2 (en) 2011-02-11 2014-02-11 Pulse Finland Oy Chassis-excited antenna apparatus and methods
US8712340B2 (en) 2011-02-18 2014-04-29 Blackberry Limited Method and apparatus for radio antenna frequency tuning
US8655286B2 (en) 2011-02-25 2014-02-18 Blackberry Limited Method and apparatus for tuning a communication device
US8594584B2 (en) 2011-05-16 2013-11-26 Blackberry Limited Method and apparatus for tuning a communication device
US8626083B2 (en) 2011-05-16 2014-01-07 Blackberry Limited Method and apparatus for tuning a communication device
JP2013005614A (ja) * 2011-06-17 2013-01-07 Toyota Motor Corp 送電装置、受電装置、車両、および非接触給電システム
US8866689B2 (en) 2011-07-07 2014-10-21 Pulse Finland Oy Multi-band antenna and methods for long term evolution wireless system
US9450291B2 (en) 2011-07-25 2016-09-20 Pulse Finland Oy Multiband slot loop antenna apparatus and methods
WO2013022826A1 (en) 2011-08-05 2013-02-14 Research In Motion Rf, Inc. Method and apparatus for band tuning in a communication device
US8712355B2 (en) 2011-08-30 2014-04-29 Motorola Mobility Llc Antenna tuning on an impedance trajectory
US9123990B2 (en) 2011-10-07 2015-09-01 Pulse Finland Oy Multi-feed antenna apparatus and methods
US9531058B2 (en) 2011-12-20 2016-12-27 Pulse Finland Oy Loosely-coupled radio antenna apparatus and methods
US9484619B2 (en) 2011-12-21 2016-11-01 Pulse Finland Oy Switchable diversity antenna apparatus and methods
US8988296B2 (en) 2012-04-04 2015-03-24 Pulse Finland Oy Compact polarized antenna and methods
US8948889B2 (en) 2012-06-01 2015-02-03 Blackberry Limited Methods and apparatus for tuning circuit components of a communication device
US9853363B2 (en) 2012-07-06 2017-12-26 Blackberry Limited Methods and apparatus to control mutual coupling between antennas
US9246223B2 (en) 2012-07-17 2016-01-26 Blackberry Limited Antenna tuning for multiband operation
US9350405B2 (en) 2012-07-19 2016-05-24 Blackberry Limited Method and apparatus for antenna tuning and power consumption management in a communication device
US9413066B2 (en) 2012-07-19 2016-08-09 Blackberry Limited Method and apparatus for beam forming and antenna tuning in a communication device
US9362891B2 (en) 2012-07-26 2016-06-07 Blackberry Limited Methods and apparatus for tuning a communication device
US9979078B2 (en) 2012-10-25 2018-05-22 Pulse Finland Oy Modular cell antenna apparatus and methods
US10069209B2 (en) 2012-11-06 2018-09-04 Pulse Finland Oy Capacitively coupled antenna apparatus and methods
US8725214B1 (en) * 2012-11-30 2014-05-13 The United States Of America, As Represented By The Secretary Of The Navy Method of tuning a frequency agile electrically small tactical AM broadcast band antenna system
US10404295B2 (en) 2012-12-21 2019-09-03 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US9374113B2 (en) 2012-12-21 2016-06-21 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US10079428B2 (en) 2013-03-11 2018-09-18 Pulse Finland Oy Coupled antenna structure and methods
US9647338B2 (en) 2013-03-11 2017-05-09 Pulse Finland Oy Coupled antenna structure and methods
US9634383B2 (en) 2013-06-26 2017-04-25 Pulse Finland Oy Galvanically separated non-interacting antenna sector apparatus and methods
US9680212B2 (en) 2013-11-20 2017-06-13 Pulse Finland Oy Capacitive grounding methods and apparatus for mobile devices
US9590308B2 (en) 2013-12-03 2017-03-07 Pulse Electronics, Inc. Reduced surface area antenna apparatus and mobile communications devices incorporating the same
US9350081B2 (en) 2014-01-14 2016-05-24 Pulse Finland Oy Switchable multi-radiator high band antenna apparatus
US9729190B2 (en) 2014-01-17 2017-08-08 Qualcomm Incorporated Switchable antenna array
US9973228B2 (en) 2014-08-26 2018-05-15 Pulse Finland Oy Antenna apparatus with an integrated proximity sensor and methods
US9948002B2 (en) 2014-08-26 2018-04-17 Pulse Finland Oy Antenna apparatus with an integrated proximity sensor and methods
US9722308B2 (en) 2014-08-28 2017-08-01 Pulse Finland Oy Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use
US9438319B2 (en) 2014-12-16 2016-09-06 Blackberry Limited Method and apparatus for antenna selection
US9906260B2 (en) 2015-07-30 2018-02-27 Pulse Finland Oy Sensor-based closed loop antenna swapping apparatus and methods

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745067A (en) * 1951-06-28 1956-05-08 True Virgil Automatic impedance matching apparatus
US3509500A (en) * 1966-12-05 1970-04-28 Avco Corp Automatic digital tuning apparatus
DE1921556A1 (de) * 1969-04-26 1970-11-05 Standard Elek K Lorenz Ag Antennenabstimmung
DE1921566A1 (de) * 1969-04-28 1970-12-03 Walter Tilleke Druckbalken fuer Schleifmaschinen
CH527517A (de) * 1970-07-17 1972-08-31 Zellweger Uster Ag Verfahren und Vorrichtung zur automatischen Impedanz-Anpassung, insbesondere zur Anpassung einer Antenne an eine gegebene Impendanz
US3675130A (en) * 1970-09-18 1972-07-04 Int Standard Electric Corp A circuit arrangement for effecting a tuning of a transceiver by means of a mangetic core memory
US3794941A (en) * 1972-05-08 1974-02-26 Hughes Aircraft Co Automatic antenna impedance tuner including digital control circuits
US3778731A (en) * 1972-06-05 1973-12-11 Cincinnati Electronics Corp Tuning method for t-network couplers
GB1524965A (en) * 1974-10-15 1978-09-13 Cincinnati Electronics Corp Technique for automatic matching of high q-loads
FR2344179A1 (fr) * 1976-03-09 1977-10-07 Thomson Csf Dispositif radioelectrique et emetteur-recepteur muni d'un tel dispositif
FR2346901A1 (fr) * 1976-04-02 1977-10-28 Alliance Tech Ind Dispositif pour accorder en frequence une antenne radio
US4112395A (en) * 1977-06-10 1978-09-05 Cincinnati Electronics Corp. Method of and apparatus for matching a load circuit to a drive circuit

Also Published As

Publication number Publication date
DE2966885D1 (en) 1984-05-17
ZA791990B (en) 1980-05-28
DK211679A (da) 1979-11-25
DK157516B (da) 1990-01-15
EP0005592B1 (en) 1984-04-11
US4201960A (en) 1980-05-06
AU4649279A (en) 1979-11-29
IL57185A (en) 1981-10-30
JPS5854685B2 (ja) 1983-12-06
AU527683B2 (en) 1983-03-17
JPS54153507A (en) 1979-12-03
DK157516C (da) 1990-06-05
IL57185A0 (en) 1979-07-25
CA1110707A (en) 1981-10-13
BR7903232A (pt) 1979-12-11
EP0005592A1 (en) 1979-11-28

Similar Documents

Publication Publication Date Title
AR223488A1 (es) Un aparato para adaptar automaticamente la impedancia nominal verdadera de un transmisor de radiofrecuencia a una antena
AR214223A1 (es) Una antena interior para la transmision de radiofrecuencia
IT7848668A0 (it) Complesso di antenna a radiofrequenza
JPS5452450A (en) Adjustable antenna for portable radio transmitter*receiver
JPS5246745A (en) Double tuning radio frequency antenna
JPS5593638A (en) Radio wave generator for ultrahigh frequency range
JPS52135243A (en) Radio frequency antenna device
DK237778A (da) Mangestraaleantenne for radiofrekvens
JPS52117014A (en) Radio frequency transceiver
IL58902A0 (en) Broad band small size monopoletransmission line antenna for radio frequencies
JPS5574225A (en) Rotary beam radio wave frequency amplifier
GB2001202A (en) Radio frequency antenna
JPS5561161A (en) Radio wave repeater
JPS54152447A (en) Very high frequency receiving antenna
GB2037085B (en) Radio frequency energy antenna
IL61317A (en) Radio frequency receiver
GB2037515B (en) High frequency radio transmitter
AU511400B2 (en) Electronic tuning radio receiver
GB2031654B (en) High frequency leaky cable antenna
JPS5514701A (en) Fsk signal radio receiver
JPS5698947A (en) Ground radio station antenna
IT1095516B (it) Antenna di trasmissione e di ricezione
JPS54132190A (en) Radio wave range finder
ES256851Y (es) Antena interior para frecuencia modulada
ATA185479A (de) Antenne fuer mehrere empfangsbereiche mit elektronischem verstaerker