CA2033796A1 - Amplificateur regenerateur rf bidirectionnel - Google Patents

Amplificateur regenerateur rf bidirectionnel

Info

Publication number
CA2033796A1
CA2033796A1 CA2033796A CA2033796A CA2033796A1 CA 2033796 A1 CA2033796 A1 CA 2033796A1 CA 2033796 A CA2033796 A CA 2033796A CA 2033796 A CA2033796 A CA 2033796A CA 2033796 A1 CA2033796 A1 CA 2033796A1
Authority
CA
Canada
Prior art keywords
signals
amplifier stages
cascaded amplifier
regenerative
power
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.)
Granted
Application number
CA2033796A
Other languages
English (en)
Other versions
CA2033796C (fr
Inventor
Harold K. Sohner
Michael A. Morgan
Surinder Kumar
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.)
Commscope Technologies LLC
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2033796A1 publication Critical patent/CA2033796A1/fr
Application granted granted Critical
Publication of CA2033796C publication Critical patent/CA2033796C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits
    • H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
CA002033796A 1990-01-18 1991-01-08 Amplificateur regenerateur rf bidirectionnel Expired - Fee Related CA2033796C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/467,379 US5187803A (en) 1990-01-18 1990-01-18 Regenerative rf bi-directional amplifier system
US467,379 1990-01-18

Publications (2)

Publication Number Publication Date
CA2033796A1 true CA2033796A1 (fr) 1991-07-19
CA2033796C CA2033796C (fr) 1995-04-11

Family

ID=23855454

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002033796A Expired - Fee Related CA2033796C (fr) 1990-01-18 1991-01-08 Amplificateur regenerateur rf bidirectionnel

Country Status (6)

Country Link
US (1) US5187803A (fr)
EP (1) EP0442259B1 (fr)
AT (1) ATE109326T1 (fr)
AU (1) AU632197B2 (fr)
CA (1) CA2033796C (fr)
DE (1) DE69103036T2 (fr)

Families Citing this family (109)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2058737C (fr) * 1992-01-03 1997-03-18 Andrew S. Beasley Systeme de repeteurs rf a amelioration dans l'utilisation simultanee des frequences pour telephones sans fil
US5377255A (en) * 1992-07-14 1994-12-27 Pcs Microcell International Inc. RF repeaters for time division duplex cordless telephone systems
DE4228623A1 (de) * 1992-08-28 1994-03-03 Bosch Gmbh Robert Tunnelfunksystem
US5404570A (en) * 1992-11-23 1995-04-04 Telefonaktiebolaget L M Ericsson Radio coverage in closed environments
JPH0746648A (ja) * 1993-08-02 1995-02-14 Fujitsu Ltd 移動体通信システム
US5485630A (en) * 1994-03-31 1996-01-16 Panasonic Technologies, Inc. Audio/video distribution system
US5568402A (en) * 1994-04-11 1996-10-22 Gse Process Solutions, Inc. Communication server for communicating with a remote device
US5697067A (en) * 1994-09-15 1997-12-09 Mine Radio Systems Inc. Communication system utilizing radiating transmission line
US5669065A (en) * 1994-09-15 1997-09-16 Mine Radio Systems Inc. Completely redundant communication system utilizing radiating transmission line
US5634191A (en) * 1994-10-24 1997-05-27 Pcs Microcell International, Inc. Self-adjusting RF repeater arrangements for wireless telephone systems
US6005884A (en) * 1995-11-06 1999-12-21 Ems Technologies, Inc. Distributed architecture for a wireless data communications system
US5774789A (en) * 1995-12-14 1998-06-30 Allen Telecom Inc. RF communication signal distribution system and method
US6157810A (en) * 1996-04-19 2000-12-05 Lgc Wireless, Inc Distribution of radio-frequency signals through low bandwidth infrastructures
CN1240192C (zh) * 1996-04-19 2006-02-01 Lgc无线股份有限公司 在低带宽媒体上传输rf带宽内的rf信号的系统和方法
US5924033A (en) * 1996-05-03 1999-07-13 Telefonaktiebolaget L/M Ericsson (Publ) Communication control circuitry and method for a group of commonly-moving mobile transceiver units
FR2764144B1 (fr) * 1997-06-02 2000-06-02 Raoul Girod Appareil pour filtrer les radiotelephones
US6032020A (en) * 1997-07-28 2000-02-29 Motorola, Inc. Multi-repeater communication system
DE19732503A1 (de) 1997-07-29 1999-02-04 Alsthom Cge Alcatel Anordnung zur Übertragung, zur Abstrahlung und zum Empfang von Hochfrequenz-Signalen
AU3586199A (en) * 1997-11-19 1999-06-07 James C. Wren Improvements to above-ground telecommunications systems and methods of designin g same
US6259910B1 (en) * 1998-02-13 2001-07-10 Lucent Technologies, Inc. Wireless telecommunications system architecture supporting block radio technology
US6195561B1 (en) * 1998-07-03 2001-02-27 Tunnel Radio Of America, Inc. Antenna system for two-way UHF underground radio system
EP1383258A3 (fr) * 1999-02-05 2004-11-24 Interdigital Technology Corporation Station de base avec compensation automatique de l'affaiblissement du cable
US7123939B1 (en) 1999-02-05 2006-10-17 Interdigital Technology Corporation Communication station with automatic cable loss compensation
JP2002536908A (ja) * 1999-02-05 2002-10-29 インターデイジタル テクノロジー コーポレーション ケーブル損失自動補償手段を備える送受信局
US6353490B1 (en) 1999-05-12 2002-03-05 Quintech, Inc. C/N performance of broadband two-way transmission of RF signals over transmission mediums with limited bandwidth
US6466768B1 (en) * 1999-06-11 2002-10-15 Conexant Systems, Inc. Multi-band filter system for wireless communication receiver
US6842459B1 (en) * 2000-04-19 2005-01-11 Serconet Ltd. Network combining wired and non-wired segments
US7369838B1 (en) 2000-10-03 2008-05-06 At&T Corporation Intra-premises wireless broadband service using lumped and distributed wireless radiation from cable source input
US6751441B1 (en) * 2000-10-03 2004-06-15 At&T Corp. Intra-premises wireless broadband service using lumped and distributed wireless radiation from cable source input
US7058369B1 (en) 2001-11-21 2006-06-06 Pmc-Sierra Inc. Constant gain digital predistortion controller for linearization of non-linear amplifiers
US10659071B2 (en) 2002-10-24 2020-05-19 Teledyne Lecroy, Inc. High bandwidth oscilloscope
US7058548B2 (en) * 2002-10-24 2006-06-06 Lecroy Corporation High bandwidth real-time oscilloscope
US7219037B2 (en) * 2002-10-24 2007-05-15 Lecroy Corporation High bandwidth oscilloscope
US7711510B2 (en) 2002-10-24 2010-05-04 Lecroy Corporation Method of crossover region phase correction when summing signals in multiple frequency bands
US7957938B2 (en) * 2002-10-24 2011-06-07 Lecroy Corporation Method and apparatus for a high bandwidth oscilloscope utilizing multiple channel digital bandwidth interleaving
JP4075759B2 (ja) 2002-11-29 2008-04-16 株式会社村田製作所 送受信フィルタ装置および通信装置
IL154921A (en) * 2003-03-13 2011-02-28 Mosaid Technologies Inc A telephone system that includes many separate sources and accessories for it
IL159838A0 (en) 2004-01-13 2004-06-20 Yehuda Binder Information device
US7616968B2 (en) * 2004-03-23 2009-11-10 Mine Radio Systems Inc. System and method to facilitate overcoming a degradation in transmission through a radiating transmission line communication system
IL161869A (en) 2004-05-06 2014-05-28 Serconet Ltd A system and method for carrying a signal originating is wired using wires
US7813451B2 (en) 2006-01-11 2010-10-12 Mobileaccess Networks Ltd. Apparatus and method for frequency shifting of a wireless signal and systems using frequency shifting
US8873585B2 (en) * 2006-12-19 2014-10-28 Corning Optical Communications Wireless Ltd Distributed antenna system for MIMO technologies
US7535394B2 (en) * 2007-07-10 2009-05-19 Lecroy Corporation High speed arbitrary waveform generator
US20100054746A1 (en) 2007-07-24 2010-03-04 Eric Raymond Logan Multi-port accumulator for radio-over-fiber (RoF) wireless picocellular systems
US7869465B2 (en) * 2007-10-08 2011-01-11 Adc Dsl Systems, Inc. Hybrid cross-link
US8085816B2 (en) * 2007-10-08 2011-12-27 Adc Dsl Systems, Inc. Regenerator unit
US8175459B2 (en) 2007-10-12 2012-05-08 Corning Cable Systems Llc Hybrid wireless/wired RoF transponder and hybrid RoF communication system using same
US8594133B2 (en) 2007-10-22 2013-11-26 Corning Mobileaccess Ltd. Communication system using low bandwidth wires
NZ563105A (en) * 2007-11-02 2010-03-26 Auckland Uniservices Ltd Communications system
US8175649B2 (en) 2008-06-20 2012-05-08 Corning Mobileaccess Ltd Method and system for real time control of an active antenna over a distributed antenna system
WO2009081376A2 (fr) 2007-12-20 2009-07-02 Mobileaccess Networks Ltd. Extension de services et d'applications d'extérieur à des zones fermées
US9673904B2 (en) 2009-02-03 2017-06-06 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
WO2010091004A1 (fr) 2009-02-03 2010-08-12 Corning Cable Systems Llc Systèmes et composants d'antennes distribuées à base de fibres optiques, et procédés de calibrage associés
AU2010210766A1 (en) 2009-02-03 2011-09-15 Corning Cable Systems Llc Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
JP5649588B2 (ja) 2009-02-08 2015-01-07 コーニング モバイルアクセス エルティディ． イーサネット信号を搬送するケーブルを用いる通信システム
US9590733B2 (en) 2009-07-24 2017-03-07 Corning Optical Communications LLC Location tracking using fiber optic array cables and related systems and methods
US8953504B2 (en) 2009-09-22 2015-02-10 Universite De Quebec En Abitibi Temiscamingue Repeater for time division duplexed signal, and corresponding multi-band regeneration and network
US8280259B2 (en) 2009-11-13 2012-10-02 Corning Cable Systems Llc Radio-over-fiber (RoF) system for protocol-independent wired and/or wireless communication
US8275265B2 (en) 2010-02-15 2012-09-25 Corning Cable Systems Llc Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
CN102845001B (zh) 2010-03-31 2016-07-06 康宁光缆系统有限责任公司 基于光纤的分布式通信组件及系统中的定位服务以及相关方法
US8570914B2 (en) 2010-08-09 2013-10-29 Corning Cable Systems Llc Apparatuses, systems, and methods for determining location of a mobile device(s) in a distributed antenna system(s)
US9160449B2 (en) 2010-10-13 2015-10-13 Ccs Technology, Inc. Local power management for remote antenna units in distributed antenna systems
US9252874B2 (en) 2010-10-13 2016-02-02 Ccs Technology, Inc Power management for remote antenna units in distributed antenna systems
EP2643947B1 (fr) 2010-11-24 2018-09-19 Corning Optical Communications LLC Module(s) de distribution d'énergie électrique capable(s) d'une connexion et/ou déconnexion à chaud pour des systèmes d'antennes réparties, et unités d'énergie électrique, composants et procédés associés
US11296504B2 (en) 2010-11-24 2022-04-05 Corning Optical Communications LLC Power distribution module(s) capable of hot connection and/or disconnection for wireless communication systems, and related power units, components, and methods
WO2012148938A1 (fr) 2011-04-29 2012-11-01 Corning Cable Systems Llc Détermination de temps de propagation de communications dans systèmes d'antennes distribuées, et composants, systèmes et procédés associés
CN103609146B (zh) 2011-04-29 2017-05-31 康宁光缆系统有限责任公司 用于增加分布式天线系统中的射频（rf）功率的系统、方法和装置
US20120288274A1 (en) * 2011-05-15 2012-11-15 Wen Li Optical network system and devices enabling data, diagnosis, and management communications
WO2013091717A1 (fr) * 2011-12-22 2013-06-27 Telefonaktiebolaget L M Ericsson (Publ) Couverture mimo sur câbles bidirectionnels rayonnants
WO2013142662A2 (fr) 2012-03-23 2013-09-26 Corning Mobile Access Ltd. Puce(s) de circuit intégré à radiofréquence (rfic) servant à fournir des fonctionnalités de système d'antenne à répartition, et composants, systèmes, et procédés connexes
EP2832012A1 (fr) 2012-03-30 2015-02-04 Corning Optical Communications LLC Réduction d'un brouillage lié à la position dans des systèmes d'antennes distribuées fonctionnant selon une configuration à entrées multiples et à sorties multiples (mimo), et composants, systèmes et procédés associés
US9781553B2 (en) 2012-04-24 2017-10-03 Corning Optical Communications LLC Location based services in a distributed communication system, and related components and methods
WO2013162988A1 (fr) 2012-04-25 2013-10-31 Corning Cable Systems Llc Architectures de système d'antenne distribué
US9154222B2 (en) 2012-07-31 2015-10-06 Corning Optical Communications LLC Cooling system control in distributed antenna systems
EP2883416A1 (fr) 2012-08-07 2015-06-17 Corning Optical Communications Wireless Ltd. Distribution de services de gestion multiplexés par répartition dans le temps (tdm) dans un système d'antennes distribuées, et composants, systèmes et procédés associés
US9455784B2 (en) 2012-10-31 2016-09-27 Corning Optical Communications Wireless Ltd Deployable wireless infrastructures and methods of deploying wireless infrastructures
US10257056B2 (en) 2012-11-28 2019-04-09 Corning Optical Communications LLC Power management for distributed communication systems, and related components, systems, and methods
EP2926466A1 (fr) 2012-11-29 2015-10-07 Corning Optical Communications LLC Liaison d'antennes d'unité distante intra-cellule/inter-cellule hybride dans des systèmes d'antenne distribués (das) à entrées multiples sorties multiples (mimo)
US9647758B2 (en) 2012-11-30 2017-05-09 Corning Optical Communications Wireless Ltd Cabling connectivity monitoring and verification
US9158864B2 (en) 2012-12-21 2015-10-13 Corning Optical Communications Wireless Ltd Systems, methods, and devices for documenting a location of installed equipment
EP2944157B1 (fr) 2013-01-08 2016-08-24 Whoop Wireless LLC Système et procédé permettant l'étalonnage d'un système d'amplificateur distribué
US9497706B2 (en) 2013-02-20 2016-11-15 Corning Optical Communications Wireless Ltd Power management in distributed antenna systems (DASs), and related components, systems, and methods
WO2014191030A1 (fr) 2013-05-29 2014-12-04 Telefonaktiebolaget L M Ericsson (Publ) Communication à câble de fuite
WO2014199380A1 (fr) 2013-06-12 2014-12-18 Corning Optical Communications Wireless, Ltd. Duplexage par répartition temporelle (tdd) dans des systèmes de communication répartis, comprenant des systèmes d'antenne répartis (das)
CN105452951B (zh) 2013-06-12 2018-10-19 康宁光电通信无线公司 电压控制式光学定向耦合器
US9247543B2 (en) 2013-07-23 2016-01-26 Corning Optical Communications Wireless Ltd Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US9661781B2 (en) 2013-07-31 2017-05-23 Corning Optical Communications Wireless Ltd Remote units for distributed communication systems and related installation methods and apparatuses
WO2015029028A1 (fr) 2013-08-28 2015-03-05 Corning Optical Communications Wireless Ltd. Gestion de énergie pour des systèmes de communication distribués, et composants, systèmes et procédés associés
US9385810B2 (en) 2013-09-30 2016-07-05 Corning Optical Communications Wireless Ltd Connection mapping in distributed communication systems
WO2015079435A1 (fr) 2013-11-26 2015-06-04 Corning Optical Communications Wireless Ltd. Activation sélective des services de communication lors de la mise sous tension d'une ou plusieurs unités distantes dans un système d'antennes distribuées (das) basé sur la consommation d'énergie
US9178635B2 (en) 2014-01-03 2015-11-03 Corning Optical Communications Wireless Ltd Separation of communication signal sub-bands in distributed antenna systems (DASs) to reduce interference
US9775123B2 (en) 2014-03-28 2017-09-26 Corning Optical Communications Wireless Ltd. Individualized gain control of uplink paths in remote units in a distributed antenna system (DAS) based on individual remote unit contribution to combined uplink power
US9357551B2 (en) 2014-05-30 2016-05-31 Corning Optical Communications Wireless Ltd Systems and methods for simultaneous sampling of serial digital data streams from multiple analog-to-digital converters (ADCS), including in distributed antenna systems
US9509133B2 (en) 2014-06-27 2016-11-29 Corning Optical Communications Wireless Ltd Protection of distributed antenna systems
US9525472B2 (en) 2014-07-30 2016-12-20 Corning Incorporated Reducing location-dependent destructive interference in distributed antenna systems (DASS) operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US9730228B2 (en) 2014-08-29 2017-08-08 Corning Optical Communications Wireless Ltd Individualized gain control of remote uplink band paths in a remote unit in a distributed antenna system (DAS), based on combined uplink power level in the remote unit
US9653861B2 (en) 2014-09-17 2017-05-16 Corning Optical Communications Wireless Ltd Interconnection of hardware components
US9602210B2 (en) 2014-09-24 2017-03-21 Corning Optical Communications Wireless Ltd Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules and optical interface modules in an optical fiber-based distributed antenna system (DAS)
US9420542B2 (en) 2014-09-25 2016-08-16 Corning Optical Communications Wireless Ltd System-wide uplink band gain control in a distributed antenna system (DAS), based on per band gain control of remote uplink paths in remote units
US9184960B1 (en) 2014-09-25 2015-11-10 Corning Optical Communications Wireless Ltd Frequency shifting a communications signal(s) in a multi-frequency distributed antenna system (DAS) to avoid or reduce frequency interference
US9729267B2 (en) 2014-12-11 2017-08-08 Corning Optical Communications Wireless Ltd Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting
US20160249365A1 (en) 2015-02-19 2016-08-25 Corning Optical Communications Wireless Ltd. Offsetting unwanted downlink interference signals in an uplink path in a distributed antenna system (das)
US9785175B2 (en) 2015-03-27 2017-10-10 Corning Optical Communications Wireless, Ltd. Combining power from electrically isolated power paths for powering remote units in a distributed antenna system(s) (DASs)
US9681313B2 (en) 2015-04-15 2017-06-13 Corning Optical Communications Wireless Ltd Optimizing remote antenna unit performance using an alternative data channel
US9948349B2 (en) 2015-07-17 2018-04-17 Corning Optical Communications Wireless Ltd IOT automation and data collection system
US10560214B2 (en) 2015-09-28 2020-02-11 Corning Optical Communications LLC Downlink and uplink communication path switching in a time-division duplex (TDD) distributed antenna system (DAS)
US9648580B1 (en) 2016-03-23 2017-05-09 Corning Optical Communications Wireless Ltd Identifying remote units in a wireless distribution system (WDS) based on assigned unique temporal delay patterns
US10236924B2 (en) 2016-03-31 2019-03-19 Corning Optical Communications Wireless Ltd Reducing out-of-channel noise in a wireless distribution system (WDS)
EP3621215A1 (fr) * 2018-09-07 2020-03-11 Wilson Electronics, LLC Options de découpage en canaux pour réduire la sensibilité de réseaux

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285505B (de) * 1964-09-29 1968-12-19 Siemens Ag Verfahren zur Verminderung des Frequenzfehlers bei Einseitenbandtraegerfrequenzsystemen fuer die Datenuebertragung
GB1235888A (en) * 1967-08-17 1971-06-16 Sumitomo Electric Industries Improvements in or relating to radio transmission systems for communication with moving bodies
US3886454A (en) * 1973-08-13 1975-05-27 Rca Corp Control apparatus for a two-way cable television system
CA1235751A (fr) * 1985-01-09 1988-04-26 Junji Namiki Repeteur monofrequence pour systeme radio numerique a micro-ondes avec annulation du signal parasite transmis de l'emetteur au recepteur
US4972346A (en) * 1987-03-24 1990-11-20 Mitsubishi Denki Kabushiki Kaisha High-frequency signal booster
US4972505A (en) * 1988-12-06 1990-11-20 Isberg Reuben A Tunnel distributed cable antenna system with signal top coupling approximately same radiated energy

Also Published As

Publication number Publication date
DE69103036T2 (de) 1994-11-17
AU632197B2 (en) 1992-12-17
CA2033796C (fr) 1995-04-11
AU6920691A (en) 1991-07-25
ATE109326T1 (de) 1994-08-15
DE69103036D1 (de) 1994-09-01
EP0442259A1 (fr) 1991-08-21
EP0442259B1 (fr) 1994-07-27
US5187803A (en) 1993-02-16

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