JPS56122502A - Mobile receiver - Google Patents

Mobile receiver

Info

Publication number
JPS56122502A
JPS56122502A JP2628280A JP2628280A JPS56122502A JP S56122502 A JPS56122502 A JP S56122502A JP 2628280 A JP2628280 A JP 2628280A JP 2628280 A JP2628280 A JP 2628280A JP S56122502 A JPS56122502 A JP S56122502A
Authority
JP
Japan
Prior art keywords
circuit
output
noise
tuner
constitution
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
JP2628280A
Other languages
Japanese (ja)
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 JP2628280A priority Critical patent/JPS56122502A/en
Publication of JPS56122502A publication Critical patent/JPS56122502A/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)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:Not to only reduce a multipath noise but also make the whole antenna part small-sizesd, by selecting the output of plural antenna elements. CONSTITUTION:The high speed switching circuit 12 amplifies an input signal of the loop antenna 1a, 1b alternatively, and switches and outputs it to its output terminal. The output terminal of the circuit 12 is connected to the input terminal of the front part 14 of the FM tuner 13. The noise detection circuit 17 is constituted of an HPF18, an amplifier 19, a Schmitt trigger circuit 20 and an wave detection circuit 21, by which only the high frequency component of a demodulation output of the IF part 15 of the tuner 13 is made to pass through. According to said constitution, when a multipath noise has occurred in an output of the IF part 15, the noise detection circuit 17 provides a trigger signal to the FF circuit 23 for forming a control circuit 22 of the circuit 12. The output of the FF circuit 23 becomes a control input of the circuit 12, and commands a switching operation of the circuit 12.
JP2628280A 1980-03-03 1980-03-03 Mobile receiver Pending JPS56122502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2628280A JPS56122502A (en) 1980-03-03 1980-03-03 Mobile receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2628280A JPS56122502A (en) 1980-03-03 1980-03-03 Mobile receiver

Publications (1)

Publication Number Publication Date
JPS56122502A true JPS56122502A (en) 1981-09-26

Family

ID=12188924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2628280A Pending JPS56122502A (en) 1980-03-03 1980-03-03 Mobile receiver

Country Status (1)

Country Link
JP (1) JPS56122502A (en)

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