JPS57203303A - Frequency-voltage converter - Google Patents

Frequency-voltage converter

Info

Publication number
JPS57203303A
JPS57203303A JP8873881A JP8873881A JPS57203303A JP S57203303 A JPS57203303 A JP S57203303A JP 8873881 A JP8873881 A JP 8873881A JP 8873881 A JP8873881 A JP 8873881A JP S57203303 A JPS57203303 A JP S57203303A
Authority
JP
Japan
Prior art keywords
circuit
frequency
input
output
comparator
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
JP8873881A
Other languages
Japanese (ja)
Other versions
JPS6329842B2 (en
Inventor
Keikichi Okada
Yuji Nishi
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP8873881A priority Critical patent/JPS57203303A/en
Publication of JPS57203303A publication Critical patent/JPS57203303A/en
Publication of JPS6329842B2 publication Critical patent/JPS6329842B2/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
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/18—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements
    • H03D3/20—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements producing pulses whose amplitude or duration depends on phase difference

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters And Equalizers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To realize a frequency (F)-voltage (V) converter having high stability, by controlling a voltage control type variable tuning circuit to which an input signal is applied with the difference of phase between the input and output signals. CONSTITUTION:The AC signal applied through a terminal 11 is supplied to a variable tuning circuit 12. The input and output signals of the circuit 12 are applied to a phase comparator 14, and the difference of phase is obtained between the input and output signals. The AC wave component is eliminated through an LPF15 for the output of the comparator 14, and the output of the comparator 14 is turned into the control signal of the circuit 12. Thus the tuning frequency of the circuit 12 follows automatically the frequency of the AC input. In this frequency following state, the control voltage to be applied to the circuit 12 is turned into an F-V converting output and extracted through an output terminal 20. In such way, an F-V converter is obtained with high stability.
JP8873881A 1981-06-09 1981-06-09 Frequency-voltage converter Granted JPS57203303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8873881A JPS57203303A (en) 1981-06-09 1981-06-09 Frequency-voltage converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8873881A JPS57203303A (en) 1981-06-09 1981-06-09 Frequency-voltage converter

Publications (2)

Publication Number Publication Date
JPS57203303A true JPS57203303A (en) 1982-12-13
JPS6329842B2 JPS6329842B2 (en) 1988-06-15

Family

ID=13951255

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8873881A Granted JPS57203303A (en) 1981-06-09 1981-06-09 Frequency-voltage converter

Country Status (1)

Country Link
JP (1) JPS57203303A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008546273A (en) * 2005-05-24 2008-12-18 フリースケール セミコンダクター インコーポレイテッド Self-aligned coupled resonator filter circuit and broadband tuner circuit incorporating the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419641A (en) * 1977-07-15 1979-02-14 Victor Co Of Japan Ltd Fm demodulation circuit by phase tracking loop system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419641A (en) * 1977-07-15 1979-02-14 Victor Co Of Japan Ltd Fm demodulation circuit by phase tracking loop system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008546273A (en) * 2005-05-24 2008-12-18 フリースケール セミコンダクター インコーポレイテッド Self-aligned coupled resonator filter circuit and broadband tuner circuit incorporating the same
US7689193B2 (en) 2005-05-24 2010-03-30 Freescale Semiconductor, Inc. Self-aligning resonator filter circuits

Also Published As

Publication number Publication date
JPS6329842B2 (en) 1988-06-15

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