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JPS56168440A - Diversity receiver for car - Google Patents

Diversity receiver for car

Info

Publication number
JPS56168440A
JPS56168440A JP7132380A JP7132380A JPS56168440A JP S56168440 A JPS56168440 A JP S56168440A JP 7132380 A JP7132380 A JP 7132380A JP 7132380 A JP7132380 A JP 7132380A JP S56168440 A JPS56168440 A JP S56168440A
Authority
JP
Japan
Prior art keywords
antenna
receiver
diode
signal sent
rise
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.)
Pending
Application number
JP7132380A
Other languages
Japanese (ja)
Inventor
Norio Fujiki
Hiroshige Fukuhara
Motomiki Hirano
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP7132380A priority Critical patent/JPS56168440A/en
Publication of JPS56168440A publication Critical patent/JPS56168440A/en
Pending legal-status Critical Current

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
    • H04B7/0802—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)

Abstract

PURPOSE:To prevent the generation of a switching noise, by giving a gentle variation during changeover of antennas to a received signal sent from an antenna to be separated as well as to a received signal sent from an antenna to be newly connected to a receiver. CONSTITUTION:If a multipath reception arises at an antenna A1 when a diode D1 conducts to supply a signal sent from a receiving antenna A1 to a receiver, the input signal of the receiver lowers. Thus a control signal e1 changes from L to H level, and at the same time a control signal e2 changes from H to level, respectively. The rise and fall of the outputs of inverters I1 and I2 are integrated by a capacitor C1 and a resistance R1, and the DC voltage that turns on the diode D1 reduces gently. The voltage increasing gently is applied to a diode D2. As a result, a swtiching noise which is caused by the rise and fall of a signal during changeover of antenna can be prevented.
JP7132380A 1980-05-30 1980-05-30 Diversity receiver for car Pending JPS56168440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7132380A JPS56168440A (en) 1980-05-30 1980-05-30 Diversity receiver for car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7132380A JPS56168440A (en) 1980-05-30 1980-05-30 Diversity receiver for car

Publications (1)

Publication Number Publication Date
JPS56168440A true JPS56168440A (en) 1981-12-24

Family

ID=13457236

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7132380A Pending JPS56168440A (en) 1980-05-30 1980-05-30 Diversity receiver for car

Country Status (1)

Country Link
JP (1) JPS56168440A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186235A (en) * 1982-04-05 1983-10-31 バイエリツシエ・モ−ト−レン・ウエルケ・アクチエンゲゼルシヤフト Method of switching reproduction of one broadcasting signal to another broadcasting signal and circuit device
US4499606A (en) * 1982-12-27 1985-02-12 Sri International Reception enhancement in mobile FM broadcast receivers and the like
US4566133A (en) * 1982-12-27 1986-01-21 Commtech International Switched diversity method and apparatus for FM receivers
US5410748A (en) * 1991-06-04 1995-04-25 Sony Corporation Space diversity receivers
US5465411A (en) * 1993-06-16 1995-11-07 Nisshin Onpa Co., Ltd. Diversity receiver with switching noise reduction
US5697075A (en) * 1993-12-23 1997-12-09 Hyundai Electronics Industries Co., Ltd. Diversity apparatus for a global positioning system antenna
US5949498A (en) * 1996-09-06 1999-09-07 Fuba Automotive Gmbh Diversity system
JP2003512745A (en) * 1999-05-04 2003-04-02 シュアー インコーポレイテッド Method and apparatus for diversity antenna with predictive switching on signal dropout
US7043218B1 (en) 1999-06-30 2006-05-09 Nec Corporation Diversity CDMA reception apparatus having only one CDMA receiving part
WO2006077832A1 (en) * 2005-01-18 2006-07-27 Ntt Docomo, Inc. Mobile communication terminal and reception diversity interrupting method
JP2007504740A (en) * 2003-09-03 2007-03-01 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Diversity receiver
JP2007103991A (en) * 2005-09-30 2007-04-19 Hitachi Kokusai Electric Inc Diversity reception phase control method and apparatus
JP2007209041A (en) * 2002-01-17 2007-08-16 Fujitsu Ten Ltd On-board digital signal receiver, and diversity system
JP2007325220A (en) * 2006-06-05 2007-12-13 Matsushita Electric Ind Co Ltd Multi-antenna communication apparatus
JP2009278525A (en) * 2008-05-16 2009-11-26 Nec Electronics Corp Antenna diversity receiver and antenna switching control method therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145469A (en) * 1978-05-06 1979-11-13 Sanyo Electric Co Ltd Signal switching unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145469A (en) * 1978-05-06 1979-11-13 Sanyo Electric Co Ltd Signal switching unit

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186235A (en) * 1982-04-05 1983-10-31 バイエリツシエ・モ−ト−レン・ウエルケ・アクチエンゲゼルシヤフト Method of switching reproduction of one broadcasting signal to another broadcasting signal and circuit device
US4499606A (en) * 1982-12-27 1985-02-12 Sri International Reception enhancement in mobile FM broadcast receivers and the like
US4566133A (en) * 1982-12-27 1986-01-21 Commtech International Switched diversity method and apparatus for FM receivers
US5410748A (en) * 1991-06-04 1995-04-25 Sony Corporation Space diversity receivers
US5465411A (en) * 1993-06-16 1995-11-07 Nisshin Onpa Co., Ltd. Diversity receiver with switching noise reduction
US5697075A (en) * 1993-12-23 1997-12-09 Hyundai Electronics Industries Co., Ltd. Diversity apparatus for a global positioning system antenna
US5949498A (en) * 1996-09-06 1999-09-07 Fuba Automotive Gmbh Diversity system
JP4755764B2 (en) * 1999-05-04 2011-08-24 シュアー インコーポレイテッド Method and apparatus for diversity antenna with predictive switching at signal dropout
JP2003512745A (en) * 1999-05-04 2003-04-02 シュアー インコーポレイテッド Method and apparatus for diversity antenna with predictive switching on signal dropout
US7043218B1 (en) 1999-06-30 2006-05-09 Nec Corporation Diversity CDMA reception apparatus having only one CDMA receiving part
JP2007209041A (en) * 2002-01-17 2007-08-16 Fujitsu Ten Ltd On-board digital signal receiver, and diversity system
JP2007504740A (en) * 2003-09-03 2007-03-01 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Diversity receiver
JP4653745B2 (en) * 2003-09-03 2011-03-16 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Diversity receiver
US7853231B2 (en) 2005-01-18 2010-12-14 Ntt Docomo, Inc. Mobile communication terminal and associated methodology for reception during diversity interruption
WO2006077832A1 (en) * 2005-01-18 2006-07-27 Ntt Docomo, Inc. Mobile communication terminal and reception diversity interrupting method
JP2007103991A (en) * 2005-09-30 2007-04-19 Hitachi Kokusai Electric Inc Diversity reception phase control method and apparatus
JP2007325220A (en) * 2006-06-05 2007-12-13 Matsushita Electric Ind Co Ltd Multi-antenna communication apparatus
JP4711892B2 (en) * 2006-06-05 2011-06-29 パナソニック株式会社 Multi-antenna communication device
JP2009278525A (en) * 2008-05-16 2009-11-26 Nec Electronics Corp Antenna diversity receiver and antenna switching control method therefor

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