JPS56158540A - Diversity receiver for car - Google Patents

Diversity receiver for car

Info

Publication number
JPS56158540A
JPS56158540A JP6221980A JP6221980A JPS56158540A JP S56158540 A JPS56158540 A JP S56158540A JP 6221980 A JP6221980 A JP 6221980A JP 6221980 A JP6221980 A JP 6221980A JP S56158540 A JPS56158540 A JP S56158540A
Authority
JP
Japan
Prior art keywords
circuit
antenna
switching
reception
receiver
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
JP6221980A
Other languages
Japanese (ja)
Inventor
Hiroshige Fukuhara
Motomiki Hirano
Norio Fujiki
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 JP6221980A priority Critical patent/JPS56158540A/en
Publication of JPS56158540A publication Critical patent/JPS56158540A/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
    • H04B7/0808—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 comparing all antennas before reception

Landscapes

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

Abstract

PURPOSE:To connect an antenna which is in best condition at all times to a receiver, by detecting the intensity of received electromagnetic waves for all the antennas periodically, selecting the antenna having maximum value of the intensity of received electromagnetic waves, and switching the receiver to this antenna. CONSTITUTION:Assuming that an antenna switching circuit 7 selects a reception antenna A1 and it is connected to a FM radio receiver 9. At this state, a switching scanning circuit 8 switches antennas A2-A4 sequentially with a scanning pulse ep from a switching control circuit 14. The reception signal of the antennas A2-A4 is reproduced at a subreceiver 12, the signal level at respective time is read into a reception state detecting and storing circuit 13 and it is stored until the next detection time. The detection and storage is repeated at a given period. When the reception signal of the antenna A1 which is detected at a reception state detecting circuit 11 is lower than the maximum storing value of the circuit 13, a switching control circuit 14 controls the circuit 7 and switching is made so that the receiver 9 can be connected to an antenna with the maximum reception level stored by the circuit 13.
JP6221980A 1980-05-13 1980-05-13 Diversity receiver for car Pending JPS56158540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6221980A JPS56158540A (en) 1980-05-13 1980-05-13 Diversity receiver for car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6221980A JPS56158540A (en) 1980-05-13 1980-05-13 Diversity receiver for car

Publications (1)

Publication Number Publication Date
JPS56158540A true JPS56158540A (en) 1981-12-07

Family

ID=13193811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6221980A Pending JPS56158540A (en) 1980-05-13 1980-05-13 Diversity receiver for car

Country Status (1)

Country Link
JP (1) JPS56158540A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845505A (en) * 1987-02-13 1989-07-04 Toyota Jidosha Kabushiki Kaisha Automobile antenna system for diversity reception
WO1989011185A1 (en) 1988-05-03 1989-11-16 Richard Hirschmann Gmbh & Co. Reception process and antenna system for mobile reception
EP0833461A1 (en) * 1996-09-26 1998-04-01 Siemens Aktiengesellschaft Polarization diversity receiver unit for frame-based mobile communication systems
JP2009290596A (en) * 2008-05-29 2009-12-10 Kyocera Corp Mobile communication device and communication control method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845505A (en) * 1987-02-13 1989-07-04 Toyota Jidosha Kabushiki Kaisha Automobile antenna system for diversity reception
WO1989011185A1 (en) 1988-05-03 1989-11-16 Richard Hirschmann Gmbh & Co. Reception process and antenna system for mobile reception
EP0345843A2 (en) * 1988-05-03 1989-12-13 Richard Hirschmann GmbH & Co. Reception method and receiving antenna system for mobile reception
EP0833461A1 (en) * 1996-09-26 1998-04-01 Siemens Aktiengesellschaft Polarization diversity receiver unit for frame-based mobile communication systems
JP2009290596A (en) * 2008-05-29 2009-12-10 Kyocera Corp Mobile communication device and communication control method
JP4660572B2 (en) * 2008-05-29 2011-03-30 京セラ株式会社 Mobile communication device and communication control method
US9070984B2 (en) 2008-05-29 2015-06-30 Kyocera Corporation Mobile communication device and communication control method

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