DE3763503D1 - Funkgeraet und antennenumschaltvorrichtung, um die empfangsempfindlichkeit zu veraendern. - Google Patents

Funkgeraet und antennenumschaltvorrichtung, um die empfangsempfindlichkeit zu veraendern.

Info

Publication number
DE3763503D1
DE3763503D1 DE8787303012T DE3763503T DE3763503D1 DE 3763503 D1 DE3763503 D1 DE 3763503D1 DE 8787303012 T DE8787303012 T DE 8787303012T DE 3763503 T DE3763503 T DE 3763503T DE 3763503 D1 DE3763503 D1 DE 3763503D1
Authority
DE
Germany
Prior art keywords
radio
change
switching device
reception sensitivity
antenna switching
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 - Fee Related
Application number
DE8787303012T
Other languages
English (en)
Inventor
Hideki Ueda
Sotoaki Babano
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE3763503D1 publication Critical patent/DE3763503D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/109—Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
DE8787303012T 1986-04-09 1987-04-07 Funkgeraet und antennenumschaltvorrichtung, um die empfangsempfindlichkeit zu veraendern. Expired - Fee Related DE3763503D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61080138A JPH0626320B2 (ja) 1986-04-09 1986-04-09 無線送受信装置

Publications (1)

Publication Number Publication Date
DE3763503D1 true DE3763503D1 (de) 1990-08-09

Family

ID=13709892

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787303012T Expired - Fee Related DE3763503D1 (de) 1986-04-09 1987-04-07 Funkgeraet und antennenumschaltvorrichtung, um die empfangsempfindlichkeit zu veraendern.

Country Status (6)

Country Link
US (1) US4853972A (de)
EP (1) EP0241265B1 (de)
JP (1) JPH0626320B2 (de)
AU (1) AU606052B2 (de)
CA (1) CA1276685C (de)
DE (1) DE3763503D1 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920001543B1 (ko) * 1988-02-29 1992-02-18 가부시끼가이샤 도시바 무선통신장치
US4979232A (en) * 1989-08-14 1990-12-18 Harris Corporation Self-biasing solid-state T/R switch
US5109536A (en) * 1989-10-27 1992-04-28 Motorola, Inc. Single-block filter for antenna duplexing and antenna-summed diversity
DE9102747U1 (de) * 1990-12-21 1991-05-23 Siemens AG, 8000 München Verriegelungssystem, z.B. Zentralverriegelungssystem eines Kfz
HUT68349A (en) * 1991-05-17 1995-06-28 Motorola Inc Channel acquisition method and apparatus for a communication system
WO1993000750A1 (en) * 1991-06-25 1993-01-07 Motorola, Inc. Method and apparatus for establishing a communication link
US5335360A (en) * 1991-06-25 1994-08-02 Motorola, Inc. Base site selection apparatus and method
JP2800858B2 (ja) * 1991-09-18 1998-09-21 日本電気株式会社 無線電話装置
JP3359944B2 (ja) * 1992-10-22 2002-12-24 株式会社日立国際電気 無線送受信機
US5325403A (en) * 1992-12-09 1994-06-28 Motorola, Inc. Method and apparatus for dual-channel diversity reception of a radio signal
US5410749A (en) * 1992-12-09 1995-04-25 Motorola, Inc. Radio communication device having a microstrip antenna with integral receiver systems
US5446922A (en) * 1992-12-21 1995-08-29 Motorola, Inc. Method and apparatus for switched diversity reception of a radio signal
US5459873A (en) * 1993-08-21 1995-10-17 Motorola, Inc. Method and communication system for improved channel scanning and link establishment determinations
US5722063A (en) * 1994-12-16 1998-02-24 Qualcomm Incorporated Method and apparatus for increasing receiver immunity to interference
FI101117B (fi) * 1995-09-22 1998-04-15 Nokia Mobile Phones Ltd Aikajakoisessa radiopuhelinjärjestelmässä toimiva radiopuhelin
DE69624673T2 (de) * 1996-01-17 2003-09-18 Nokia Corp Verfahren zur Ausdehnung des Bereichs eines Empfangssignalstärkenindikators und nach diesem Verfahren arbeitender Funksendeempfänger
DE19610760A1 (de) * 1996-03-19 1997-09-25 Telefunken Microelectron Sende-Empfangs-Umschalter mit Halbleitern
US5789995A (en) * 1996-09-20 1998-08-04 Motorola, Inc. Low loss electronic radio frequency switch
JPH10150387A (ja) * 1996-11-18 1998-06-02 Nec Corp ホットスタンバイ切替器
CN1139273C (zh) * 1997-06-27 2004-02-18 皇家菲利浦电子有限公司 具有低功耗和良好频谱规范的无线通信设备
US6107960A (en) * 1998-01-20 2000-08-22 Snaptrack, Inc. Reducing cross-interference in a combined GPS receiver and communication system
CN1478327A (zh) * 2001-07-27 2004-02-25 ������������ʽ���� 接收机
DE10218314A1 (de) * 2002-04-24 2003-11-13 Delphi Tech Inc Sicherungssystem
FI116111B (fi) * 2003-06-10 2005-09-15 Nokia Corp Menetelmä häiriöiden vaikutuksen pienentämiseksi vastaanottimessa ja elektroniikkalaite
JP4536467B2 (ja) * 2004-09-17 2010-09-01 株式会社エヌ・ティ・ティ・ドコモ 平面回路用筐体
US8970346B2 (en) * 2005-05-20 2015-03-03 Continental Automotive Systems, Inc. Signal sensitivity control during passive authentication
US8649739B2 (en) * 2010-01-06 2014-02-11 Rfaxis, Inc. Increased receive sensitivity radio frequency front end integrated circuits
US9735854B2 (en) * 2016-01-18 2017-08-15 Qorvo Us, Inc. Systems for antenna swapping switching and methods of operation thereof
US9793972B1 (en) 2016-04-04 2017-10-17 Qorvo Us, Inc. Multiple-input multiple-output (MIMO) antenna swapping circuit

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117241A (en) * 1961-09-29 1964-01-07 Gen Electric Transmit-receiver switch utilizing resonant circuits and oppositely poled parallel diodes for isolation
US3452299A (en) * 1965-10-15 1969-06-24 Rca Corp Transmit-receive switch
FR2205252A5 (de) * 1972-10-31 1974-05-24 Trt Telecom Radio Electr
DE2426506A1 (de) * 1974-05-31 1975-12-04 Standard Elektrik Lorenz Ag Funk- sende/empfangsgeraet
US4055807A (en) * 1976-03-25 1977-10-25 Motorola, Inc. Antenna switch
DE2636969C2 (de) * 1976-08-17 1984-05-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt HF-Antennenschalter
US4170756A (en) * 1977-04-18 1979-10-09 General Aviation Electronics, Inc. Versatile transceiver coupling network
US4186350A (en) * 1977-04-19 1980-01-29 Fujitsu Ten Limited Antenna tuning circuit
JPS54126524U (de) * 1978-02-24 1979-09-04
US4229826A (en) * 1978-05-30 1980-10-21 Wanzer C L Wide band impedance matching device
FR2447650A1 (fr) * 1979-01-23 1980-08-22 Thomson Csf Emetteur-recepteur a commande automatique d'alternat et reseau de telecommunications comportant un tel emetteur-recepteur
JPS59205831A (ja) * 1982-12-24 1984-11-21 Yaesu Musen Co Ltd リモ−ト切換回路の構造
JPS6022038U (ja) * 1983-07-20 1985-02-15 株式会社ケンウッド 送受信機制御装置
JPS60124146U (ja) * 1984-01-27 1985-08-21 日本電気株式会社 空中線切換回路
JPS60261228A (ja) * 1984-06-08 1985-12-24 Hitachi Ltd トランシ−バ
JPH06113718A (ja) * 1992-10-07 1994-04-26 Hoshizaki Electric Co Ltd 鮮魚介類の処理方法

Also Published As

Publication number Publication date
EP0241265B1 (de) 1990-07-04
CA1276685C (en) 1990-11-20
JPS62237815A (ja) 1987-10-17
EP0241265A1 (de) 1987-10-14
AU606052B2 (en) 1991-01-31
US4853972A (en) 1989-08-01
JPH0626320B2 (ja) 1994-04-06
AU7132387A (en) 1987-10-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee