JPS533711A - Signal receiving circuit for frequency system - Google Patents

Signal receiving circuit for frequency system

Info

Publication number
JPS533711A
JPS533711A JP7804276A JP7804276A JPS533711A JP S533711 A JPS533711 A JP S533711A JP 7804276 A JP7804276 A JP 7804276A JP 7804276 A JP7804276 A JP 7804276A JP S533711 A JPS533711 A JP S533711A
Authority
JP
Japan
Prior art keywords
band
input level
signal receiving
receiving circuit
band width
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
JP7804276A
Other languages
Japanese (ja)
Inventor
Kazuhiko Shirai
Yuji Matsushita
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7804276A priority Critical patent/JPS533711A/en
Publication of JPS533711A publication Critical patent/JPS533711A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:The narro-band filter such as a mechanical filter and the tuning cicuit -which has a characteristic of the band width varying according to the input level, namely, wide band width in case of a high input level and a narrow band width in case of a low input level-are combined, so that the input level variation width greater than the maximum attenuation degree within the band of the narrow-band filter with respect to the signal of the center frequency can be allowed while having a band width below a fixed value.
JP7804276A 1976-06-30 1976-06-30 Signal receiving circuit for frequency system Pending JPS533711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7804276A JPS533711A (en) 1976-06-30 1976-06-30 Signal receiving circuit for frequency system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7804276A JPS533711A (en) 1976-06-30 1976-06-30 Signal receiving circuit for frequency system

Publications (1)

Publication Number Publication Date
JPS533711A true JPS533711A (en) 1978-01-13

Family

ID=13650770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7804276A Pending JPS533711A (en) 1976-06-30 1976-06-30 Signal receiving circuit for frequency system

Country Status (1)

Country Link
JP (1) JPS533711A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6348019A (en) * 1986-08-15 1988-02-29 Nec Corp Fm signal discriminating circuit
JPH0219216A (en) * 1988-06-28 1990-01-23 Sutorapatsuku Kk Packing method and apparatus
JPH04317232A (en) * 1991-04-17 1992-11-09 Kokusai Electric Co Ltd Intermediate frequency filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6348019A (en) * 1986-08-15 1988-02-29 Nec Corp Fm signal discriminating circuit
JPH0219216A (en) * 1988-06-28 1990-01-23 Sutorapatsuku Kk Packing method and apparatus
JPH04317232A (en) * 1991-04-17 1992-11-09 Kokusai Electric Co Ltd Intermediate frequency filter

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