JPS56110347A - Am receiver - Google Patents

Am receiver

Info

Publication number
JPS56110347A
JPS56110347A JP1270980A JP1270980A JPS56110347A JP S56110347 A JPS56110347 A JP S56110347A JP 1270980 A JP1270980 A JP 1270980A JP 1270980 A JP1270980 A JP 1270980A JP S56110347 A JPS56110347 A JP S56110347A
Authority
JP
Japan
Prior art keywords
disturbing
frequency
disturbing frequency
beat component
diode
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
JP1270980A
Other languages
Japanese (ja)
Inventor
Norio Numata
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP1270980A priority Critical patent/JPS56110347A/en
Publication of JPS56110347A publication Critical patent/JPS56110347A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To ensure an automatic exclusion of the beat component due to the disturbing frequency in accordance with the amount of the beat component, by detecting the signals having the levels in a prescribed range including the beat component due to the disturbing frequency and then filtering the disturbing frequency in accordance with the output of detection. CONSTITUTION:In case the station that receives an effect of the disturbing frequency of the carrier wave of the adjacent station is received, the level signals within a prescribed range including the beat component due to the disturbing frequency are extracted through the band pass filter 9. The extracted signal is amplified by the amplifier 10 and receives a wave detection through the wave detection circuit 11 to be applied to the transistor 13 and the doide 14. Then the current flowing to the transistor 13 and the diode 15 varies by the current flowing to the diode 14. In other words, the resistance value of the diode 15 varies according to the detected signal level of the disturbance frequency. As a result, the filtering quantity of the notch filter 20 that filters the disturbing filter varies in accordance with the signal level of the disturbing frequency.
JP1270980A 1980-02-05 1980-02-05 Am receiver Pending JPS56110347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1270980A JPS56110347A (en) 1980-02-05 1980-02-05 Am receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1270980A JPS56110347A (en) 1980-02-05 1980-02-05 Am receiver

Publications (1)

Publication Number Publication Date
JPS56110347A true JPS56110347A (en) 1981-09-01

Family

ID=11812934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1270980A Pending JPS56110347A (en) 1980-02-05 1980-02-05 Am receiver

Country Status (1)

Country Link
JP (1) JPS56110347A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5756046U (en) * 1980-09-17 1982-04-01
JPS6181237U (en) * 1984-10-31 1986-05-29

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514383B2 (en) * 1978-03-30 1980-04-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514383B2 (en) * 1978-03-30 1980-04-16

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5756046U (en) * 1980-09-17 1982-04-01
JPS6181237U (en) * 1984-10-31 1986-05-29

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