JPS56122531A - Receiving antenna system - Google Patents

Receiving antenna system

Info

Publication number
JPS56122531A
JPS56122531A JP2627980A JP2627980A JPS56122531A JP S56122531 A JPS56122531 A JP S56122531A JP 2627980 A JP2627980 A JP 2627980A JP 2627980 A JP2627980 A JP 2627980A JP S56122531 A JPS56122531 A JP S56122531A
Authority
JP
Japan
Prior art keywords
switching
antenna
noise
detection
multipath
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.)
Granted
Application number
JP2627980A
Other languages
Japanese (ja)
Other versions
JPS6253969B2 (en
Inventor
Shigeki Takeda
Junichi Shibata
Masashi Shimakata
Yasuhiro Oshime
Shintaro Gomi
Katsuaki Kawamura
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP2627980A priority Critical patent/JPS56122531A/en
Publication of JPS56122531A publication Critical patent/JPS56122531A/en
Publication of JPS6253969B2 publication Critical patent/JPS6253969B2/ja
Granted 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)
  • Noise Elimination (AREA)
  • Radio Transmission System (AREA)

Abstract

PURPOSE:To make no noise component based on switching of an antenna appear an audio component in the detection output, by switching the antenna electronically at a high speed simultaneously with the detection of a multipath noise. CONSTITUTION:When receiving by the antenna 6, if the influence of a multipath appears in the output waveform A, and a noise component appears in the detection output C, the mulitpath detection circuit 8 provides a switching control signal F to the switching means 9. The means 9 is provided with two control input terminals, and control signals of opposite phase to each other, based on the signal F are applied to said two input terminals. In response to this control signal, the means 9 switches the antenna from 6 to 7 electronically at a high speed, for instance, 10musec or <5musec preferably. Accordingly, since the antennas 6, 7 are switched instantaneously as soon as a multipath noise is detected, a noise component based on this switching is not superposed as an audio component on the detection output.
JP2627980A 1980-03-03 1980-03-03 Receiving antenna system Granted JPS56122531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2627980A JPS56122531A (en) 1980-03-03 1980-03-03 Receiving antenna system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2627980A JPS56122531A (en) 1980-03-03 1980-03-03 Receiving antenna system

Publications (2)

Publication Number Publication Date
JPS56122531A true JPS56122531A (en) 1981-09-26
JPS6253969B2 JPS6253969B2 (en) 1987-11-12

Family

ID=12188837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2627980A Granted JPS56122531A (en) 1980-03-03 1980-03-03 Receiving antenna system

Country Status (1)

Country Link
JP (1) JPS56122531A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53102613A (en) * 1977-02-18 1978-09-07 Nissan Motor Receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53102613A (en) * 1977-02-18 1978-09-07 Nissan Motor Receiver

Also Published As

Publication number Publication date
JPS6253969B2 (en) 1987-11-12

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