JPS5631208A - Quadrature detecting circuit - Google Patents

Quadrature detecting circuit

Info

Publication number
JPS5631208A
JPS5631208A JP10787779A JP10787779A JPS5631208A JP S5631208 A JPS5631208 A JP S5631208A JP 10787779 A JP10787779 A JP 10787779A JP 10787779 A JP10787779 A JP 10787779A JP S5631208 A JPS5631208 A JP S5631208A
Authority
JP
Japan
Prior art keywords
voltage
diode
tuning
frequency
proportion
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
JP10787779A
Other languages
Japanese (ja)
Inventor
Yoshihiko Watanabe
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 JP10787779A priority Critical patent/JPS5631208A/en
Publication of JPS5631208A publication Critical patent/JPS5631208A/en
Pending 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
    • H03D3/22—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector

Landscapes

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

Abstract

PURPOSE:To prevent degradation of the distortion rate of the FM detection output for change of the tuning frequency, by using the voltage, which is obtained by smooothing the product output of a multiplier, to control the tuning frequency of the tuning circuit of the 90 deg. phase shifter. CONSTITUTION:90 deg. Phase shifter 3 consists of coils L1 and L2 and varactor diode D1 fundamentally, and a high-level reference voltage is applied to the cathode terminal of diode D1, and a voltage equal to the reference voltage of tuning meter 5 is applied to coil L2 as the bias voltage. In the detuning state, since the control voltage of diode D1 is increased or reduced in proportion to the degree of detuning, the capacitance of diode D1 tries to reduce and increase in proportion to it and functions to cause the turning frequency of the tuning circuit to coincide with the receiving IF frequency. As a result, the distortion rate becomes good throughout all linear regions in the S curve characteristic of the control voltage.
JP10787779A 1979-08-23 1979-08-23 Quadrature detecting circuit Pending JPS5631208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10787779A JPS5631208A (en) 1979-08-23 1979-08-23 Quadrature detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10787779A JPS5631208A (en) 1979-08-23 1979-08-23 Quadrature detecting circuit

Publications (1)

Publication Number Publication Date
JPS5631208A true JPS5631208A (en) 1981-03-30

Family

ID=14470345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10787779A Pending JPS5631208A (en) 1979-08-23 1979-08-23 Quadrature detecting circuit

Country Status (1)

Country Link
JP (1) JPS5631208A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607207A (en) * 1983-06-24 1985-01-16 Clarion Co Ltd Phase shift synergetic fm demodulator
JPS6076917A (en) * 1983-10-04 1985-05-01 Inoue Japax Res Inc Wire-cut electric spark machine
JPS6215018A (en) * 1985-07-10 1987-01-23 Fanuc Ltd Wire-cut electric discharge machine
JPS63127829A (en) * 1986-11-17 1988-05-31 Hoden Seimitsu Kako Kenkyusho Ltd Wire electric discharge machining
JPH0531825U (en) * 1992-07-23 1993-04-27 フアナツク株式会社 Wire cut electric discharge machine
US5453714A (en) * 1993-03-10 1995-09-26 National Semiconductor Corporation Binary FM demodulator with self-adjusting resonant operating frequency according to demodulated binary output signal duty cycle
EP0736966A1 (en) * 1995-04-05 1996-10-09 Thomson Consumer Electronics, Inc. Bus aligned quadrature FM detektor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607207A (en) * 1983-06-24 1985-01-16 Clarion Co Ltd Phase shift synergetic fm demodulator
JPS6076917A (en) * 1983-10-04 1985-05-01 Inoue Japax Res Inc Wire-cut electric spark machine
JPS6215018A (en) * 1985-07-10 1987-01-23 Fanuc Ltd Wire-cut electric discharge machine
JPS63127829A (en) * 1986-11-17 1988-05-31 Hoden Seimitsu Kako Kenkyusho Ltd Wire electric discharge machining
JPH0531825U (en) * 1992-07-23 1993-04-27 フアナツク株式会社 Wire cut electric discharge machine
US5453714A (en) * 1993-03-10 1995-09-26 National Semiconductor Corporation Binary FM demodulator with self-adjusting resonant operating frequency according to demodulated binary output signal duty cycle
EP0736966A1 (en) * 1995-04-05 1996-10-09 Thomson Consumer Electronics, Inc. Bus aligned quadrature FM detektor

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