DE69707903D1 - Verwendung von zirkulatoren in zeitduplex-funksystemen - Google Patents

Verwendung von zirkulatoren in zeitduplex-funksystemen

Info

Publication number
DE69707903D1
DE69707903D1 DE69707903T DE69707903T DE69707903D1 DE 69707903 D1 DE69707903 D1 DE 69707903D1 DE 69707903 T DE69707903 T DE 69707903T DE 69707903 T DE69707903 T DE 69707903T DE 69707903 D1 DE69707903 D1 DE 69707903D1
Authority
DE
Germany
Prior art keywords
circulators
time
radio systems
duplex radio
duplex
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.)
Expired - Lifetime
Application number
DE69707903T
Other languages
English (en)
Other versions
DE69707903T2 (de
Inventor
A Dolman
E Rogers
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.)
Ericsson Inc
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Publication of DE69707903D1 publication Critical patent/DE69707903D1/de
Application granted granted Critical
Publication of DE69707903T2 publication Critical patent/DE69707903T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)
DE69707903T 1996-09-06 1997-08-07 Verwendung von zirkulatoren in zeitduplex-funksystemen Expired - Lifetime DE69707903T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/709,287 US5923647A (en) 1996-09-06 1996-09-06 Circulator usage in time division duplex radios
PCT/US1997/013389 WO1998010525A1 (en) 1996-09-06 1997-08-07 Circulator usage in time division duplex radios

Publications (2)

Publication Number Publication Date
DE69707903D1 true DE69707903D1 (de) 2001-12-06
DE69707903T2 DE69707903T2 (de) 2002-04-11

Family

ID=24849227

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69707903T Expired - Lifetime DE69707903T2 (de) 1996-09-06 1997-08-07 Verwendung von zirkulatoren in zeitduplex-funksystemen

Country Status (9)

Country Link
US (1) US5923647A (de)
EP (1) EP0923811B1 (de)
CN (1) CN1118952C (de)
AU (1) AU4048597A (de)
BR (1) BR9711683A (de)
DE (1) DE69707903T2 (de)
EE (1) EE9900085A (de)
HK (1) HK1020816A1 (de)
WO (1) WO1998010525A1 (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10173547A (ja) * 1996-12-11 1998-06-26 Matsushita Electric Ind Co Ltd 送信出力検出回路
FR2773024A1 (fr) * 1997-12-23 1999-06-25 Philips Electronics Nv Ecreteur selectif
US6567647B1 (en) * 1998-03-26 2003-05-20 Ericsson Inc. Low noise radio frequency transceivers including circulators
EP1061662B1 (de) * 1998-11-10 2006-01-18 Matsushita Electric Industrial Co., Ltd. Hochfrequenzfunkschaltung
US6735418B1 (en) * 1999-05-24 2004-05-11 Intel Corporation Antenna interface
KR100360895B1 (ko) * 1999-11-23 2002-11-13 주식회사 텔웨이브 서큘레이터를 이용한 송/수신부 결합 시스템 및 그의송신신호 소거방법
US6591086B1 (en) 2000-04-24 2003-07-08 Telaxis Communications Corporation Enhanced time division duplexing (TDD) transceiver circuitry
ATE295632T1 (de) 2000-11-03 2005-05-15 Paratek Microwave Inc Verfahren zur kanalfrequenzzuteilung für hf- und mikrowellenduplexer
GB0127188D0 (en) * 2001-11-13 2002-01-02 Quasar Microwave Tech Diplexer
US7486968B2 (en) * 2002-01-30 2009-02-03 Telefonaktiebolaget L M Ericsson (Publ) Method and system for transmission of carrier signals between first and second antenna networks
US7079815B2 (en) * 2003-05-20 2006-07-18 Raytheon Company Monolithic microwave integrated circuit transceiver
US20050255812A1 (en) * 2004-05-17 2005-11-17 Samsung Electronics Co., Ltd. RF front-end apparatus in a TDD wireless communication system
KR100570510B1 (ko) 2004-07-26 2006-04-12 주식회사 에이텔시스텍 휴대인터넷 시간분할이중방식 안테나단의 누설신호로 인한3차왜곡 억제방법 및 그 안테나단
KR100726232B1 (ko) 2004-07-28 2007-06-08 삼성전자주식회사 시분할복신 무선통신시스템의 고주파 전단 장치
KR100668653B1 (ko) * 2004-08-18 2007-01-12 한국전자통신연구원 시분할 이중화 방식의 무선 시스템에서의 송수신 신호분리 장치 및 그 방법
US7250830B2 (en) * 2004-12-30 2007-07-31 M/A Com Inc. Dual band full duplex mobile radio
US20070161357A1 (en) * 2006-01-12 2007-07-12 Sony Ericsson Mobile Communications Ab Multiband antenna switch
KR100867315B1 (ko) 2006-02-03 2008-11-06 삼성전자주식회사 코드북 기반의 빔포밍 시스템에서 빔포밍 벡터 결정 장치및 방법
WO2007102560A1 (ja) * 2006-03-08 2007-09-13 Kyocera Corporation 分波器および通信装置
KR100841638B1 (ko) * 2006-04-25 2008-06-26 삼성전자주식회사 시분할복신 무선통신시스템의 수신부 보호 장치
KR100780419B1 (ko) * 2006-09-27 2007-11-29 주식회사 케이엠더블유 고주파 스위치
KR100946098B1 (ko) * 2008-02-21 2010-03-10 삼성전기주식회사 시분할 방식의 무선 통신 장치
US8190120B1 (en) 2008-04-25 2012-05-29 Sprint Communications Company L.P. Method and system for the creation of location based records
US7733814B1 (en) * 2008-05-19 2010-06-08 Clear Wireless Llc Separation and combination of multiple channels in a bi-directional time-division communication system
US9124354B2 (en) * 2011-05-12 2015-09-01 St-Ericsson Sa Isolation and protection circuit for a receiver in a wireless communication device
CN103000973B (zh) * 2012-11-29 2016-05-25 余姚亿威电子科技有限公司 一种由低通滤波器形成的带通滤波器
US9294143B1 (en) * 2014-06-13 2016-03-22 L-3 Communications Corp. Circulator used as a high power TX/RX switch
CN107317665B (zh) * 2017-06-22 2019-05-17 维沃移动通信有限公司 一种同时同频全双工系统及移动终端
CN109412537B (zh) 2017-08-15 2022-10-14 诺基亚通信公司 低噪声放大器保护
WO2023282808A1 (en) * 2021-07-08 2023-01-12 Telefonaktiebolaget Lm Ericsson (Publ) An improved electrical filter topology

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380822A (en) * 1981-11-02 1983-04-19 Motorola, Inc. Transmit-receive switching circuit for radio frequency circulators
JPH02209024A (ja) * 1989-02-09 1990-08-20 Seiko Epson Corp アンテナ共用器
US5347241A (en) * 1993-02-08 1994-09-13 Hughes Aircraft Company Dual junction back-to-back microstrip four-port circulators
JPH06291696A (ja) * 1993-03-30 1994-10-18 Sony Corp アンテナ共用器
FI95179C (fi) * 1993-11-01 1995-12-27 Verdera Oy Liuskajohtoresonaattorirakenne
US5590412A (en) * 1993-11-19 1996-12-31 Sanyo Electric Co., Ltd. Communication apparatus using common amplifier for transmission and reception
JPH08195695A (ja) * 1995-01-12 1996-07-30 Murata Mfg Co Ltd アンテナ共用送受信装置
JPH08298404A (ja) * 1995-04-27 1996-11-12 Murata Mfg Co Ltd 送受信装置
US5701595A (en) * 1995-05-04 1997-12-23 Nippondenso Co., Ltd. Half duplex RF transceiver having low transmit path signal loss

Also Published As

Publication number Publication date
WO1998010525A1 (en) 1998-03-12
HK1020816A1 (en) 2000-05-19
US5923647A (en) 1999-07-13
EP0923811B1 (de) 2001-10-31
CN1235715A (zh) 1999-11-17
CN1118952C (zh) 2003-08-20
BR9711683A (pt) 1999-08-24
DE69707903T2 (de) 2002-04-11
AU4048597A (en) 1998-03-26
EP0923811A1 (de) 1999-06-23
EE9900085A (et) 1999-10-15

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Legal Events

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