JPS5675740A - Frequency demodulator - Google Patents

Frequency demodulator

Info

Publication number
JPS5675740A
JPS5675740A JP15239979A JP15239979A JPS5675740A JP S5675740 A JPS5675740 A JP S5675740A JP 15239979 A JP15239979 A JP 15239979A JP 15239979 A JP15239979 A JP 15239979A JP S5675740 A JPS5675740 A JP S5675740A
Authority
JP
Japan
Prior art keywords
circuit
signal
amplifying
demodulated
amplified
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
JP15239979A
Other languages
Japanese (ja)
Other versions
JPH0131335B2 (en
Inventor
Takeshi Hayasaka
Kazuo Sakamoto
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 JP15239979A priority Critical patent/JPS5675740A/en
Publication of JPS5675740A publication Critical patent/JPS5675740A/en
Publication of JPH0131335B2 publication Critical patent/JPH0131335B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/26—Demodulation of angle-, frequency- or phase- modulated oscillations by means of sloping amplitude/frequency characteristic of tuned or reactive circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To reduce the power consumption at the amplifying circuit at the end, by branching the demodulation signal into main line component and additional line component, and amplifying only required additional circuit signal at the amplifier circuit at the end. CONSTITUTION:The signal D demodulated at a frequency discrimination circuit 17 is demodulated without lowering the frequency discrimination characteristics, since the load is a constant-resistance branching circuit 19 of e.g., 50 or 75 ohms, and unnecessary signal is branched with the circuit 19 and terminated at the terminator 20. On the other hand, required signal is fed to an amplifying circuit 18 from the circuit 19 and after being amplified to a required level, it is output as P. Thus, since required signal only is amplified at the circuit 18, the saturated power of the amplifier circuits can be small and the power consumption can be small.
JP15239979A 1979-11-27 1979-11-27 Frequency demodulator Granted JPS5675740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15239979A JPS5675740A (en) 1979-11-27 1979-11-27 Frequency demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15239979A JPS5675740A (en) 1979-11-27 1979-11-27 Frequency demodulator

Publications (2)

Publication Number Publication Date
JPS5675740A true JPS5675740A (en) 1981-06-23
JPH0131335B2 JPH0131335B2 (en) 1989-06-26

Family

ID=15539656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15239979A Granted JPS5675740A (en) 1979-11-27 1979-11-27 Frequency demodulator

Country Status (1)

Country Link
JP (1) JPS5675740A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102195014A (en) * 2010-03-15 2011-09-21 精工电子有限公司 Gasket for electrochemical cell and electrochemical cell

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51139238A (en) * 1975-05-16 1976-12-01 Nec Corp System for suppressing sidebands of angular modulation wave

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51139238A (en) * 1975-05-16 1976-12-01 Nec Corp System for suppressing sidebands of angular modulation wave

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102195014A (en) * 2010-03-15 2011-09-21 精工电子有限公司 Gasket for electrochemical cell and electrochemical cell

Also Published As

Publication number Publication date
JPH0131335B2 (en) 1989-06-26

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