FR2019915A1 - - Google Patents

Info

Publication number
FR2019915A1
FR2019915A1 FR6933789A FR6933789A FR2019915A1 FR 2019915 A1 FR2019915 A1 FR 2019915A1 FR 6933789 A FR6933789 A FR 6933789A FR 6933789 A FR6933789 A FR 6933789A FR 2019915 A1 FR2019915 A1 FR 2019915A1
Authority
FR
France
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Withdrawn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
FR6933789A
Other languages
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.)
GE Healthcare UK Ltd
Plessey Co Ltd
Original Assignee
GE Healthcare UK Ltd
Plessey Co 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 GE Healthcare UK Ltd, Plessey Co Ltd filed Critical GE Healthcare UK Ltd
Publication of FR2019915A1 publication Critical patent/FR2019915A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3073—Circuits generating control signals when no carrier is present, or in SSB, CW or pulse receivers
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/35—Details of non-pulse systems
    • G01S7/352—Receivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators
    • H03H7/25—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
    • H03H7/253—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a diode
    • H03H7/255—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a diode the element being a PIN diode
    • 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
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR6933789A 1968-10-04 1969-10-03 Withdrawn FR2019915A1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4711868A GB1272223A (en) 1968-10-04 1968-10-04 Improvements in or relating to microwave radar equipment

Publications (1)

Publication Number Publication Date
FR2019915A1 true FR2019915A1 (enExample) 1970-07-10

Family

ID=10443797

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6933789A Withdrawn FR2019915A1 (enExample) 1968-10-04 1969-10-03

Country Status (2)

Country Link
FR (1) FR2019915A1 (enExample)
GB (1) GB1272223A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517071A1 (fr) * 1981-11-24 1983-05-27 Commissariat Energie Atomique Recepteur pour sondeur de detection et de mesure de phenomenes relatifs a l'environnement du globe terrestre
FR2557747A1 (fr) * 1983-12-28 1985-07-05 Radiotechnique Circuit attenuateur pour recepteur radio

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517071A1 (fr) * 1981-11-24 1983-05-27 Commissariat Energie Atomique Recepteur pour sondeur de detection et de mesure de phenomenes relatifs a l'environnement du globe terrestre
EP0080927A3 (en) * 1981-11-24 1983-07-06 Commissariat A L'energie Atomique Etablissement De Caractere Scientifique Technique Et Industriel Receiver for a terrestrial environment probe
US4554546A (en) * 1981-11-24 1985-11-19 Commissariat A L'energie Atomique Receiver for a sounder permitting the detection and measurement of phonomena linked with the earths environment
FR2557747A1 (fr) * 1983-12-28 1985-07-05 Radiotechnique Circuit attenuateur pour recepteur radio

Also Published As

Publication number Publication date
GB1272223A (en) 1972-04-26

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Legal Events

Date Code Title Description
ST Notification of lapse