GB1402141A - Phase-sensitive detector circuit arrangements - Google Patents

Phase-sensitive detector circuit arrangements

Info

Publication number
GB1402141A
GB1402141A GB2393672A GB2393672A GB1402141A GB 1402141 A GB1402141 A GB 1402141A GB 2393672 A GB2393672 A GB 2393672A GB 2393672 A GB2393672 A GB 2393672A GB 1402141 A GB1402141 A GB 1402141A
Authority
GB
United Kingdom
Prior art keywords
terminal
fet
phase
signal paths
voltages
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.)
Expired
Application number
GB2393672A
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.)
DAWNAY FAULKNER ASSOCIATES Ltd
Original Assignee
DAWNAY FAULKNER ASSOCIATES 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 DAWNAY FAULKNER ASSOCIATES Ltd filed Critical DAWNAY FAULKNER ASSOCIATES Ltd
Priority to GB2393672A priority Critical patent/GB1402141A/en
Publication of GB1402141A publication Critical patent/GB1402141A/en
Expired 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
    • 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
    • H03D1/2272—Homodyne or synchrodyne circuits using FET's

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1402141 Phase senstive detector DAWNAY FAULKNER ASSOCIATES Ltd 26 July 1973 [22 May 1972] 23936/72 Heading H3A A phase sensitive detector comprises a first signal path including an FET Q1 for coupling an input terminal 1 to an output terminal 4, a second alternative signal path including a further FET Q2 for coupling the terminal 1 to earth, an arrangement 7 for supplying reference voltages Vr1, Vr2 in antiphase to switch Q1, Q2 alternately so that at any instant one of the signal paths is open. The detector may include a third and a fourth signal paths from terminal 2 including FET's Q3, Q4 also switched by the same reference voltages VR1, VR2. The switching voltages may have square waveforms or alternatively different rectangular references voltages may be applied to the FET's Q1, Q3 connected to each terminal 1, 2 so that quiescent periods exist during which neither of the signal paths to the terminal 4 is open. The elements 3, 7 are phase inverters. The terminal 4 may be connected to an amplifier 5 with feedback elements C3, R3.
GB2393672A 1972-05-22 1972-05-22 Phase-sensitive detector circuit arrangements Expired GB1402141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2393672A GB1402141A (en) 1972-05-22 1972-05-22 Phase-sensitive detector circuit arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2393672A GB1402141A (en) 1972-05-22 1972-05-22 Phase-sensitive detector circuit arrangements

Publications (1)

Publication Number Publication Date
GB1402141A true GB1402141A (en) 1975-08-06

Family

ID=10203722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2393672A Expired GB1402141A (en) 1972-05-22 1972-05-22 Phase-sensitive detector circuit arrangements

Country Status (1)

Country Link
GB (1) GB1402141A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105369A1 (en) * 1982-03-15 1984-04-18 Motorola Inc Combined phase detector and low pass filter.
WO1986001356A1 (en) * 1984-08-16 1986-02-27 American Telephone & Telegraph Company Frequency comparator circuits
DE4135644C1 (en) * 1991-10-29 1993-03-04 Sgs-Thomson Microelectronics Gmbh, 8011 Grasbrunn, De

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105369A1 (en) * 1982-03-15 1984-04-18 Motorola Inc Combined phase detector and low pass filter.
EP0105369A4 (en) * 1982-03-15 1985-09-02 Motorola Inc Combined phase detector and low pass filter.
WO1986001356A1 (en) * 1984-08-16 1986-02-27 American Telephone & Telegraph Company Frequency comparator circuits
DE4135644C1 (en) * 1991-10-29 1993-03-04 Sgs-Thomson Microelectronics Gmbh, 8011 Grasbrunn, De
US5376891A (en) * 1991-10-29 1994-12-27 Sgs-Thomson Microelectronics Gmbh Phase-sensitive rectifier arrangement with integration effect

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930725