JPS56156030A - Diversity receiver for vehicle - Google Patents

Diversity receiver for vehicle

Info

Publication number
JPS56156030A
JPS56156030A JP5940880A JP5940880A JPS56156030A JP S56156030 A JPS56156030 A JP S56156030A JP 5940880 A JP5940880 A JP 5940880A JP 5940880 A JP5940880 A JP 5940880A JP S56156030 A JPS56156030 A JP S56156030A
Authority
JP
Japan
Prior art keywords
noise
level
ignition noise
ignition
fluctuation
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
JP5940880A
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 JP5940880A priority Critical patent/JPS56156030A/en
Publication of JPS56156030A publication Critical patent/JPS56156030A/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)
  • Details Of Aerials (AREA)

Abstract

PURPOSE:To prevent a level fluctuation of a dark noise caused by an ignition noise, by installing plural diversity reception switching antennas concentratedly at the front side having a small level difference of the ignition noise or at the rear side. CONSTITUTION:For a front engine, the level of an ignition noise lowers as the ignition noise goes further away toward the rear side, and the level difference of the ignition noise is within about 1-2dB at the areas of installation of the rear whip antennas 1 and 1', a rear glass antenna and a trunk lid antenna each. Accordingly, just a slight amount of fluctuation of about 1-2dB is caused for the noise level due to an ignition noise even if a switching is carried out among these antennas mentioned above. Thus a fluctuation of noise level which is harsh to the ear can be prevented.
JP5940880A 1980-05-07 1980-05-07 Diversity receiver for vehicle Pending JPS56156030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5940880A JPS56156030A (en) 1980-05-07 1980-05-07 Diversity receiver for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5940880A JPS56156030A (en) 1980-05-07 1980-05-07 Diversity receiver for vehicle

Publications (1)

Publication Number Publication Date
JPS56156030A true JPS56156030A (en) 1981-12-02

Family

ID=13112417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5940880A Pending JPS56156030A (en) 1980-05-07 1980-05-07 Diversity receiver for vehicle

Country Status (1)

Country Link
JP (1) JPS56156030A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864104U (en) * 1981-10-22 1983-04-30 トヨタ自動車株式会社 Glass antenna for automobile front window
JPS58195256U (en) * 1982-06-22 1983-12-26 株式会社東芝 heating fuser
US4788549A (en) * 1984-11-27 1988-11-29 Toyota Jidosha Kabushiki Kaisha Automotive antenna system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864104U (en) * 1981-10-22 1983-04-30 トヨタ自動車株式会社 Glass antenna for automobile front window
JPS58195256U (en) * 1982-06-22 1983-12-26 株式会社東芝 heating fuser
US4788549A (en) * 1984-11-27 1988-11-29 Toyota Jidosha Kabushiki Kaisha Automotive antenna system

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