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FR2428943A1 - CORRECTION CIRCUIT FOR PERTURBED SIGNALS - Google Patents

CORRECTION CIRCUIT FOR PERTURBED SIGNALS

Info

Publication number
FR2428943A1
FR2428943A1 FR7817888A FR7817888A FR2428943A1 FR 2428943 A1 FR2428943 A1 FR 2428943A1 FR 7817888 A FR7817888 A FR 7817888A FR 7817888 A FR7817888 A FR 7817888A FR 2428943 A1 FR2428943 A1 FR 2428943A1
Authority
FR
France
Prior art keywords
frequency
disturbance
source
correction circuit
signals
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.)
Withdrawn
Application number
FR7817888A
Other languages
French (fr)
Inventor
Michel Georges Poullain
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Priority to FR7817888A priority Critical patent/FR2428943A1/en
Publication of FR2428943A1 publication Critical patent/FR2428943A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
    • G01R27/06—Measuring reflection coefficients; Measuring standing-wave ratio
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H19/00—Networks using time-varying elements, e.g. N-path filters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmitters (AREA)

Abstract

Le circuit assure, au moyen de deux projections du signal perturbé, l'une sur une tension de référence à la fréquence de la source, l'autre sur la même tension déphasée de 90 degrés , suivies d'un filtrage basse fréquence, l'élimination des termes dus à la perturbation dans les signaux issus d'un coupleur directionnel traversé par la ligne soumise à un champ perturbateur. La fréquence de coupure de chacun des filtres basse fréquence utilisés est choisie inférieure à la valeur de la différence entre les fréquences de la source et de la perturbation. Applicable aux circuits d'accord d'aériens pour les émetteurs proches.The circuit ensures, by means of two projections of the disturbed signal, one on a reference voltage at the frequency of the source, the other on the same voltage out of phase by 90 degrees, followed by low frequency filtering, the elimination of terms due to disturbance in the signals from a directional coupler crossed by the line subjected to a disturbing field. The cut-off frequency of each of the low-frequency filters used is chosen to be less than the value of the difference between the frequencies of the source and of the disturbance. Applicable to aerial tuning circuits for nearby transmitters.

FR7817888A 1978-06-15 1978-06-15 CORRECTION CIRCUIT FOR PERTURBED SIGNALS Withdrawn FR2428943A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7817888A FR2428943A1 (en) 1978-06-15 1978-06-15 CORRECTION CIRCUIT FOR PERTURBED SIGNALS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817888A FR2428943A1 (en) 1978-06-15 1978-06-15 CORRECTION CIRCUIT FOR PERTURBED SIGNALS

Publications (1)

Publication Number Publication Date
FR2428943A1 true FR2428943A1 (en) 1980-01-11

Family

ID=9209549

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7817888A Withdrawn FR2428943A1 (en) 1978-06-15 1978-06-15 CORRECTION CIRCUIT FOR PERTURBED SIGNALS

Country Status (1)

Country Link
FR (1) FR2428943A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060325A1 (en) * 1981-03-12 1982-09-22 Siemens Aktiengesellschaft Circuit for the conversion of an input signal, comprising harmonics in a certain frequency domain in an in-phase and/or amplitude-adjustable sinusoidal output signal
FR2560998A1 (en) * 1984-03-09 1985-09-13 Cgr Mev Method of measuring impedance at high frequency and high-frequency impedance measurement installation for implementing the method
CN108156612A (en) * 2016-12-06 2018-06-12 罗森伯格（上海）通信技术有限公司 Standing wave analysis instrument

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2065287C1 (en) * 1970-09-30 1977-12-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2065287C1 (en) * 1970-09-30 1977-12-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV2198/73 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060325A1 (en) * 1981-03-12 1982-09-22 Siemens Aktiengesellschaft Circuit for the conversion of an input signal, comprising harmonics in a certain frequency domain in an in-phase and/or amplitude-adjustable sinusoidal output signal
FR2560998A1 (en) * 1984-03-09 1985-09-13 Cgr Mev Method of measuring impedance at high frequency and high-frequency impedance measurement installation for implementing the method
CN108156612A (en) * 2016-12-06 2018-06-12 罗森伯格（上海）通信技术有限公司 Standing wave analysis instrument

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Legal Events

Date Code Title Description
ST Notification of lapse