DK0620657T3 - Antenne omkoblet diversitetsmodtager - Google Patents

Antenne omkoblet diversitetsmodtager

Info

Publication number
DK0620657T3
DK0620657T3 DK94302691T DK94302691T DK0620657T3 DK 0620657 T3 DK0620657 T3 DK 0620657T3 DK 94302691 T DK94302691 T DK 94302691T DK 94302691 T DK94302691 T DK 94302691T DK 0620657 T3 DK0620657 T3 DK 0620657T3
Authority
DK
Denmark
Prior art keywords
diversity receiver
switched diversity
antenna switched
antenna
receiver
Prior art date
Application number
DK94302691T
Other languages
Danish (da)
English (en)
Inventor
Yoshio Urabe
Hitoshi Takai
Hidetoshi Yamasaki
Original Assignee
Matsushita Electric Ind Co 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
Priority claimed from JP08961693A external-priority patent/JP3374438B2/ja
Priority claimed from JP5089615A external-priority patent/JPH06303220A/ja
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Application granted granted Critical
Publication of DK0620657T3 publication Critical patent/DK0620657T3/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0882—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using post-detection diversity
    • H04B7/0888—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using post-detection diversity with selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
    • H04B7/0814—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching based on current reception conditions, e.g. switching to different antenna when signal level is below threshold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
    • H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
DK94302691T 1993-04-16 1994-04-15 Antenne omkoblet diversitetsmodtager DK0620657T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP08961693A JP3374438B2 (ja) 1993-04-16 1993-04-16 アンテナ切り替えダイバーシチ受信装置
JP5089615A JPH06303220A (ja) 1993-04-16 1993-04-16 ダイバーシチ受信装置

Publications (1)

Publication Number Publication Date
DK0620657T3 true DK0620657T3 (da) 2004-03-08

Family

ID=26431031

Family Applications (2)

Application Number Title Priority Date Filing Date
DK94302691T DK0620657T3 (da) 1993-04-16 1994-04-15 Antenne omkoblet diversitetsmodtager
DK02004164T DK1239609T3 (da) 1993-04-16 1994-04-15 Antenneomkoblet diversitetsmodtager

Family Applications After (1)

Application Number Title Priority Date Filing Date
DK02004164T DK1239609T3 (da) 1993-04-16 1994-04-15 Antenneomkoblet diversitetsmodtager

Country Status (5)

Country Link
US (1) US5561673A (de)
EP (2) EP0620657B1 (de)
CA (1) CA2121448C (de)
DE (2) DE69434597T2 (de)
DK (2) DK0620657T3 (de)

Families Citing this family (106)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4437490C2 (de) * 1993-12-02 1996-07-25 Gros Gerhard Hochfrequenz-Empfangseinrichtung für besondere Sicherheitsanforderungen
WO1996012355A2 (en) * 1994-10-17 1996-04-25 Philips Electronics N.V. A wireless digital communication system, a radio apparatus, a digital speaker, and a digital speaker controlling apparatus
US5781588A (en) * 1994-11-10 1998-07-14 Matsushita Electric Industrial Co., Ltd. FSK signal receiver
JP2693922B2 (ja) * 1995-02-13 1997-12-24 日本電気エンジニアリング株式会社 移動無線端末機のチャンネル切替判定装置
DE19530021C2 (de) * 1995-07-17 1999-07-29 Hagenuk Telecom Gmbh Verfahren und Vorrichtung zur Steuerung von Antennen
EP0755131A3 (de) * 1995-07-17 1999-05-06 Hagenuk Gmbh Vorrichtung zur Steuerung von Antennen
JP3578839B2 (ja) * 1995-07-18 2004-10-20 三菱電機株式会社 ディジタル受信機
US6023615A (en) * 1995-11-29 2000-02-08 Motorola, Inc. Method for controlling a diversity receiver apparatus in a radio subscriber unit
US6018651A (en) * 1995-11-29 2000-01-25 Motorola, Inc. Radio subscriber unit having a switched antenna diversity apparatus and method therefor
GB2308530B (en) * 1995-12-21 2000-03-22 Nokia Mobile Phones Ltd Antenna selection control circuitry
US6421543B1 (en) * 1996-01-29 2002-07-16 Ericsson Inc. Cellular radiotelephone base stations and methods using selected multiple diversity reception
DE19607045A1 (de) * 1996-02-24 1997-08-28 Lindenmeier Heinz Empfangsantennen-Scanningdiversitysystem für den Meterwellenbereich für Fahrzeuge
GB2311693B (en) * 1996-03-29 2000-06-21 Nokia Mobile Phones Ltd Antenna selection control circuitry
FI107485B (fi) * 1996-04-17 2001-08-15 Nokia Mobile Phones Ltd Diversiteettimenetelmä, radiovastaanotin ja radiojärjestelmä
DE19621199A1 (de) * 1996-05-25 1997-11-27 Bosch Gmbh Robert Verfahren und Verringerung von Schwund
JPH1093489A (ja) * 1996-09-17 1998-04-10 Toshiba Corp 無線通信装置及びダイバーシチ受信方法
CA2188845A1 (en) * 1996-10-25 1998-04-25 Stephen Ross Todd Selection of an antenna operating in diversity
JP2959499B2 (ja) * 1996-11-29 1999-10-06 日本電気株式会社 無線通信装置
US6085076A (en) * 1997-04-07 2000-07-04 Omnipoint Corporation Antenna diversity for wireless communication system
US6108526A (en) * 1997-05-07 2000-08-22 Lucent Technologies, Inc. Antenna system and method thereof
US6138012A (en) * 1997-08-04 2000-10-24 Motorola, Inc. Method and apparatus for reducing signal blocking in a satellite communication system
US6009124A (en) * 1997-09-22 1999-12-28 Intel Corporation High data rate communications network employing an adaptive sectored antenna
US6079367A (en) * 1997-10-10 2000-06-27 Dogwatch, Inc. Animal training apparatus and method
US6035183A (en) * 1997-12-09 2000-03-07 Nortel Networks Corporation Basestation RSSI and BER feedback signal quality display and transmit diversity
US5940454A (en) * 1997-12-17 1999-08-17 Nortel Networks Corporation Blind switch diversity control apparatus
AU2015299A (en) * 1997-12-30 1999-07-19 Ericsson Inc. A unified antenna diversity switching system for tdma-based telephones
US6483884B1 (en) * 1997-12-30 2002-11-19 Ericsson Inc. Antenna diversity switching system for TDMA-based telephones
US6389085B1 (en) 1998-01-14 2002-05-14 Wavecom Electronics Inc. Receiver combiner for spatial diversity digital communications
US6049705A (en) * 1998-02-03 2000-04-11 Ericsson Inc. Diversity for mobile terminals
GB2338149A (en) * 1998-02-27 1999-12-08 Northern Telecom Ltd Switching antennas in a diversity receiver
SE511859C2 (sv) * 1998-04-27 1999-12-06 Ericsson Telefon Ab L M Skapande av avsiktlig sidlob
DE19823237A1 (de) * 1998-05-25 1999-12-02 Heinz Lindenmeier Funksystem für Fernwirkfunktionen in stehenden Fahrzeugen
US6201955B1 (en) * 1998-05-29 2001-03-13 Motorola, Inc. Method and apparatus for receiving a radio frequency signal using a plurality of antennas
JP3323809B2 (ja) * 1998-06-19 2002-09-09 松下電器産業株式会社 時分割多重無線通信方式の受信電界強度測定装置
FR2780584B1 (fr) * 1998-06-29 2006-12-15 Canon Kk Dispositif et procede de selection d'antenne pour une station de communication
JP3602974B2 (ja) * 1998-11-10 2004-12-15 富士通株式会社 ダイバーシチ受信装置及びその方法
SE514624C2 (sv) * 1998-12-22 2001-03-26 Ericsson Telefon Ab L M Förfarande och arrangemang för att upprätta en länk mellan två fasta noder i ett mobilradiosystem genom användning av adaptiva antenner och en reflekterande kropp
JP3667549B2 (ja) * 1999-03-29 2005-07-06 日本電気株式会社 ダイバーシティ受信装置
JP2000295151A (ja) * 1999-04-05 2000-10-20 Matsushita Electric Ind Co Ltd ダイバーシティ受信機
DE19935675A1 (de) * 1999-07-29 2001-02-15 Bosch Gmbh Robert Schaltung zum Umschalten zwischen Empfangsantennen
DK1186120T3 (da) * 1999-11-30 2003-04-28 Fraunhofer Ges Forschung Dect-sende-/modtage-terminal og fremgangsmåde til kommunikation mellem en dect-sende-/modtage-terminal og en dect-basisstation
JP3852736B2 (ja) 2000-02-23 2006-12-06 株式会社エヌ・ティ・ティ・ドコモ 受信信号合成方法、システム、無線受信局及び受信局
ES2242560T3 (es) * 2000-04-18 2005-11-16 Sony Deutschland Gmbh Diversidad de transmision ofdm.
DE10034039A1 (de) * 2000-07-13 2002-01-31 Harman Becker Automotive Sys Runddfunkempfangssystem, Empfänger und Betriebsverfahren dafür
TW545003B (en) * 2001-01-16 2003-08-01 Matsushita Electric Ind Co Ltd Antenna diversity communications device
US7010073B2 (en) * 2001-01-19 2006-03-07 Qualcomm, Incorporated Delay lock loops for wireless communication systems
ATE394843T1 (de) * 2001-02-28 2008-05-15 Nokia Corp Verfahren zur frequenzaktualisierung in einem funkkommunikationssystem
EP1257070B1 (de) * 2001-05-11 2010-11-10 Panasonic Corporation Diversitätsempfänger
FR2826527B1 (fr) * 2001-06-25 2003-09-26 Thomson Licensing Sa Dispositif de reception equipe pour evaluer les performances des chemins par lesquels il recoit des signaux provenant d'une meme source et procede pour l'exploitation de ce dispositif
WO2003003613A1 (en) * 2001-06-27 2003-01-09 Koninklijke Philips Electronics N.V. Frequency offset diversity receiver
US7103382B2 (en) 2001-07-10 2006-09-05 Kyocera Wireless Corp. System and method for receiving and transmitting information in a multipath environment
US7747232B2 (en) * 2001-07-13 2010-06-29 Harman Becker Automotive Systems Gmbh Radio reception system with automatic tuning
JP2003046418A (ja) * 2001-08-03 2003-02-14 Uniden Corp ダイバーシチ受信装置
FR2833435B1 (fr) * 2001-12-06 2004-02-27 Thomson Licensing Sa Methode de selection de chemin de reception et dispositif de reception comprenant plusieurs chemins de reception
JP3939165B2 (ja) * 2002-02-20 2007-07-04 三洋電機株式会社 無線装置、無線通信システム、空間パス制御方法および空間パス制御プログラム
KR100913660B1 (ko) * 2002-02-21 2009-08-24 키오세라 와이어리스 코포레이션 Ｇｐｓ 가능 무선 통신을 제공하는 장치 및 방법
US20030228857A1 (en) * 2002-06-06 2003-12-11 Hitachi, Ltd. Optimum scan for fixed-wireless smart antennas
GB0219170D0 (en) * 2002-08-16 2002-09-25 Univ Surrey Wireless communication system and a method of operating a wireless communication system
JP3841411B2 (ja) * 2003-01-17 2006-11-01 松下電器産業株式会社 ダイバシティ受信装置およびダイバシティ受信方法
JP2004282432A (ja) * 2003-03-17 2004-10-07 Matsushita Electric Ind Co Ltd デジタル放送受信装置
US7394870B2 (en) * 2003-04-04 2008-07-01 Silicon Storage Technology, Inc. Low complexity synchronization for wireless transmission
US7113760B1 (en) 2003-04-29 2006-09-26 Ami Semiconductor, Inc. Direct conversion receiver for amplitude modulated signals using linear/log filtering
US7139546B1 (en) 2003-04-29 2006-11-21 Ami Semiconductor, Inc. Up-conversion of a down-converted baseband signal in a direct conversion architecture without the baseband signal passing through active elements
US7197091B1 (en) 2003-05-06 2007-03-27 Ami Semiconductor, Inc. Direct conversion receiver with direct current offset correction circuitry
US7006809B2 (en) * 2003-05-06 2006-02-28 Ami Semiconductor, Inc. Adaptive diversity receiver architecture
KR100608740B1 (ko) * 2003-08-08 2006-08-04 엘지전자 주식회사 휴대단말기의 수신성능 개선장치 및 방법
JP2005094143A (ja) * 2003-09-12 2005-04-07 Uniden Corp ダイバーシチ受信装置
US7305056B2 (en) 2003-11-18 2007-12-04 Ibiquity Digital Corporation Coherent tracking for FM in-band on-channel receivers
JP4239828B2 (ja) * 2004-01-14 2009-03-18 ソニー株式会社 受信装置および受信方法、並びにプログラム
JP2005210239A (ja) * 2004-01-21 2005-08-04 Nec Corp アンテナ選択システム及びその方法並びにそれを用いた無線通信装置
JP2005223784A (ja) * 2004-02-09 2005-08-18 Alps Electric Co Ltd ダイバーシティ受信機
SE527699C2 (sv) * 2004-02-27 2006-05-16 Infineon Technologies Ag Metod för antenndiversitet med fallback och viktning
JP4470040B2 (ja) * 2004-05-26 2010-06-02 船井電機株式会社 ディジタルテレビジョン放送信号受信装置
JP4323381B2 (ja) * 2004-06-03 2009-09-02 Ｏｋｉセミコンダクタ株式会社 無線受信装置
US7525926B2 (en) * 2004-08-02 2009-04-28 Atheros Communications, Inc. Wireless communication using beam forming and diversity
JP4470045B2 (ja) * 2004-11-29 2010-06-02 船井電機株式会社 テレビジョン放送受信装置
JP4631411B2 (ja) * 2004-11-29 2011-02-16 船井電機株式会社 テレビジョン放送受信装置
US20060128435A1 (en) * 2004-12-15 2006-06-15 Alfaplus Semiconductor Inc. Antenna signal switching device and method for switching antenna signal
US7392092B2 (en) * 2005-02-28 2008-06-24 Cardiac Pacemakers, Inc. Method and apparatus for operating a diversity antenna system for communicating with implantable medical device
US8352040B2 (en) * 2005-02-28 2013-01-08 Cardiac Pacemakers, Inc. Diversity antenna system for communication with an implantable medical device
US7610065B2 (en) 2005-02-28 2009-10-27 Cardiac Pacemakers, Inc. Method and apparatus for antenna selection in a diversity antenna system for communicating with implantable medical device
TWI266489B (en) * 2005-06-07 2006-11-11 Realtek Semiconductor Corp Apparatus and method for increasing signal estimation accuraccy
JP2007019939A (ja) * 2005-07-08 2007-01-25 Renesas Technology Corp 無線通信装置及びそれを用いた携帯電話端末
US20070019764A1 (en) * 2005-07-20 2007-01-25 Yang Hyun Po Antenna diversity device and method in terrestrial digital multimedia broadcasting
GB0519582D0 (en) * 2005-09-26 2005-11-02 Cambridge Silicon Radio Ltd Antenna diversity
WO2007038969A1 (en) * 2005-10-05 2007-04-12 Telecom Italia S.P.A Method and system for multiple antenna communications, related apparatus and corresponding computer program product
WO2007110923A1 (ja) * 2006-03-28 2007-10-04 Matsushita Electric Industrial Co., Ltd. ダイバーシチ受信装置及びダイバーシチ受信方法
US7706768B2 (en) * 2006-08-02 2010-04-27 Intel Corporation Diversity switching
KR101204394B1 (ko) 2006-10-16 2012-11-26 포항공과대학교 산학협력단 Ｕｗ 기반 ｓｃ 시스템에서 ｓｔｂｃ 스킴을 지원하는송신기, 수신기 및 그 방법
US20080240280A1 (en) * 2007-04-02 2008-10-02 Apacewave Technologies Corporation Intelligent Iterative Switch Diversity
US8064861B2 (en) * 2008-04-14 2011-11-22 Silicon Laboratories Inc. Circuit and method for antenna selection in an antenna diversity receiver
US8755476B2 (en) 2009-02-01 2014-06-17 Qualcomm Incorporated Apparatus and method for antenna switching diversity in an OFDM system
JP5356185B2 (ja) * 2009-11-05 2013-12-04 前田金属工業株式会社 無線通信システムのアンテナ切替方法
KR101141429B1 (ko) * 2009-12-03 2012-05-03 삼성전기주식회사 다이버시티 안테나 시스템의 안테나 선택 장치 및 방법
WO2011105074A1 (ja) * 2010-02-24 2011-09-01 パナソニック株式会社 ダイバーシチ受信装置
US8874041B2 (en) * 2011-10-03 2014-10-28 Apple Inc. Electronic device with service acquisition antenna switching
TWI454071B (zh) * 2012-01-05 2014-09-21 Realtek Semiconductor Corp 支援天線分集機制的無線通信電路
US8934852B2 (en) 2012-05-21 2015-01-13 Qualcomm Incorporated Antenna switch configuration devices, methods and systems
US9518852B2 (en) 2012-09-27 2016-12-13 Rosemount Inc. Hybrid power module with fault detection
US9291684B2 (en) 2013-06-28 2016-03-22 Rosemount, Inc. Logic capable power module
US10911214B2 (en) 2016-05-17 2021-02-02 Nxp Usa, Inc. Preamble detection in wireless systems with intermittent reception
CA3076552C (en) * 2017-09-20 2023-03-14 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Adaptive timing synchronization for reception for bursty and continuous signals
KR101971682B1 (ko) * 2018-10-25 2019-08-13 엘아이지넥스원 주식회사 무선 단말기의 수신 안테나 선택 방법
US11817926B2 (en) * 2020-09-29 2023-11-14 Qualcomm Incorporated Techniques for antenna switched diversity management
CN112929032A (zh) * 2021-01-26 2021-06-08 Tcl华星光电技术有限公司 数据编码方法、装置、存储介质及计算机设备
EP4080781A1 (de) 2021-04-23 2022-10-26 Nxp B.V. Kommunikationsvorrichtung und betriebsverfahren

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5668037A (en) * 1979-11-07 1981-06-08 Meisei Electric Co Ltd Space diversity reception system
JPS5838037A (ja) * 1981-08-31 1983-03-05 Oki Electric Ind Co Ltd スペ−スダイバシテイ受信方式
JPS58202642A (ja) * 1982-05-21 1983-11-25 Nec Corp スペ−スダイバ−シテイ受信装置
JPS5924569A (ja) * 1982-07-31 1984-02-08 Hiroshi Oda 鏡面を持つ固体の製造方法
GB8521159D0 (en) * 1985-08-23 1985-10-02 Pa Consulting Services Two-way radio communications system
JPS63194440A (ja) * 1987-02-09 1988-08-11 Nippon Telegr & Teleph Corp <Ntt> デイジタル信号受信方式
US4977616A (en) * 1987-11-30 1990-12-11 Motorola, Inc. Antenna selection control circuit
US5095535A (en) * 1988-07-28 1992-03-10 Motorola, Inc. High bit rate communication system for overcoming multipath
US4953197A (en) * 1988-12-08 1990-08-28 International Mobile Machines Corporation Combination spatial diversity system
JPH02213234A (ja) * 1989-02-13 1990-08-24 Alpine Electron Inc ダイバーシティ受信機
US5036515A (en) * 1989-05-30 1991-07-30 Motorola, Inc. Bit error rate detection
JP2552928B2 (ja) * 1990-01-31 1996-11-13 三菱電機株式会社 アンテナ選択ダイバーシチ受信装置
SE465991B (sv) * 1990-04-10 1991-11-25 Ericsson Telefon Ab L M Foerfarande foer att i en mottagare vaelja den laempligaste av tvaa eller flera antenner
JPH048031A (ja) * 1990-04-26 1992-01-13 Mitsubishi Electric Corp ダイバーシチ受信装置
DE69103196T2 (de) * 1990-04-27 1995-02-23 Nippon Telegraph & Telephone Antennenauswahl-Diversity-Empfangssystem.
GB2244190A (en) * 1990-05-17 1991-11-20 Orbitel Mobile Communications Receiver systems with equalisers
JPH0447729A (ja) * 1990-06-15 1992-02-17 Clarion Co Ltd ダイバーシティ方式ｆｍ多重放送受信機
US5117236A (en) * 1990-10-19 1992-05-26 Motorola, Inc. Antenna pattern selection for optimized communications
US5138327A (en) * 1990-10-19 1992-08-11 Motorola, Inc. Antenna pattern selection for optimized communications and avoidance of people
JPH056943U (ja) * 1991-02-28 1993-01-29 株式会社東芝 ゲインコントロール回路
US5303240A (en) * 1991-07-08 1994-04-12 Motorola, Inc. Telecommunications system using directional antennas
JPH0529993A (ja) * 1991-07-19 1993-02-05 Nippon Telegr & Teleph Corp <Ntt> 移動通信用一周波数交互通信方式におけるダイバーシチ回路
US5280637A (en) * 1991-09-18 1994-01-18 Motorola, Inc. Phase combining method and apparatus for use in a diversity receiver
US5321850A (en) * 1991-10-09 1994-06-14 Telefonaktiebolaget L M Ericsson Diversity radio receiver automatic frequency control
US5329555A (en) * 1992-09-09 1994-07-12 Motorola, Inc. Method and apparatus for antenna diversity in a wireless communication system
US5323421A (en) * 1992-09-30 1994-06-21 Motorola, Inc. Method and apparatus of estimating channel quality in a receiver
US5392300A (en) * 1992-11-10 1995-02-21 Motorola, Inc. Dual mode radio communication unit
US5345600A (en) * 1993-08-31 1994-09-06 Motorola, Inc. Method and apparatus for selectively-enabled diversity signaling in a radio communications system

Also Published As

Publication number Publication date
DE69434597T2 (de) 2006-07-06
DE69433312T2 (de) 2004-05-27
DE69434597D1 (de) 2006-02-02
US5561673A (en) 1996-10-01
EP1239609B1 (de) 2005-12-28
DK1239609T3 (da) 2006-05-08
CA2121448A1 (en) 1994-10-17
EP1239609A2 (de) 2002-09-11
EP0620657A1 (de) 1994-10-19
CA2121448C (en) 2002-05-07
EP0620657B1 (de) 2003-11-12
EP1239609A3 (de) 2003-03-19
DE69433312D1 (de) 2003-12-18

Similar Documents

Publication Publication Date Title
DK0620657T3 (da) Antenne omkoblet diversitetsmodtager
DE69725083D1 (de) Adaptive Antenne
DE69103196D1 (de) Antennenauswahl-Diversity-Empfangssystem.
GB9309353D0 (en) Wireless communication system having antenna diversity
DE69812445D1 (de) Adaptive Antenne
DE69417106D1 (de) Ebene Antenne
CA2188845A1 (en) Selection of an antenna operating in diversity
GB2280804B (en) Receiver having concealed external antenna
EP0587975A3 (en) Diversity radio receiver
AU636438B2 (en) Antenna selection diversity reception apparatus
NO984985D0 (no) Kombinert antenne
DE69431277D1 (de) Tragbares Funkgerät mit Diversityempfänger
SG88725A1 (en) Diversity antenna circuit
DE69419080D1 (de) Antenne
DE69632429D1 (de) Antenne
DE69624300D1 (de) Antenne
DE69726523D1 (de) Antenne
DE69730557D1 (de) Datenempfänger mit Antennen-Diversity
DE69622337D1 (de) Antenne
GB2279813B (en) Polarisation diversity antenna
DE69428767D1 (de) Einziehbare Antenne
DE59711043D1 (de) Phasengesteuerte Antenne
FR2730094B1 (fr) Antenne radio
DE69302407D1 (de) Zirkularpolarisierte, ebene Antenne
DE69719429D1 (de) Antenne