FR871213A - Montage de filtre électrique variable automatiquement pour une fréquence d'utilisation qui varie - Google Patents

Montage de filtre électrique variable automatiquement pour une fréquence d'utilisation qui varie

Info

Publication number
FR871213A
FR871213A FR871213DA FR871213A FR 871213 A FR871213 A FR 871213A FR 871213D A FR871213D A FR 871213DA FR 871213 A FR871213 A FR 871213A
Authority
FR
France
Prior art keywords
filter assembly
varying frequency
electric filter
variable electric
automatically variable
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
Other languages
English (en)
French (fr)
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.)
Fides BV
Original Assignee
Fides BV
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 Fides BV filed Critical Fides BV
Application granted granted Critical
Publication of FR871213A publication Critical patent/FR871213A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/18—Automatic control in untuned amplifiers
    • H03G5/20—Automatic control in untuned amplifiers having discharge tubes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR871213D 1939-11-09 1941-03-31 Montage de filtre électrique variable automatiquement pour une fréquence d'utilisation qui varie Expired FR871213A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE871213X 1939-11-09

Publications (1)

Publication Number Publication Date
FR871213A true FR871213A (fr) 1942-04-13

Family

ID=6811857

Family Applications (1)

Application Number Title Priority Date Filing Date
FR871213D Expired FR871213A (fr) 1939-11-09 1941-03-31 Montage de filtre électrique variable automatiquement pour une fréquence d'utilisation qui varie

Country Status (2)

Country Link
FR (1) FR871213A (enrdf_load_stackoverflow)
NL (1) NL59219C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL59219C (enrdf_load_stackoverflow)

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