SE377640B - - Google Patents

Info

Publication number
SE377640B
SE377640B SE7210640A SE1064072A SE377640B SE 377640 B SE377640 B SE 377640B SE 7210640 A SE7210640 A SE 7210640A SE 1064072 A SE1064072 A SE 1064072A SE 377640 B SE377640 B SE 377640B
Authority
SE
Sweden
Application number
SE7210640A
Inventor
C Beaugrand
R Ermoglio
Original Assignee
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 Thomson Csf filed Critical Thomson Csf
Publication of SE377640B publication Critical patent/SE377640B/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/24—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube
    • H03C3/245—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube by using semiconductor elements
    • 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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/756—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using a signal generator for modifying the reflectivity of the reflector
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • H03C7/025—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices
    • H03C7/027—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices using diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplitude Modulation (AREA)
SE7210640A 1971-08-17 1972-08-16 SE377640B (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7129963A FR2149283B1 (xx) 1971-08-17 1971-08-17

Publications (1)

Publication Number Publication Date
SE377640B true SE377640B (xx) 1975-07-14

Family

ID=9081939

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7210640A SE377640B (xx) 1971-08-17 1972-08-16

Country Status (7)

Country Link
US (1) US3824499A (xx)
JP (1) JPS4830356A (xx)
DE (1) DE2240515A1 (xx)
FR (1) FR2149283B1 (xx)
GB (1) GB1395803A (xx)
NL (1) NL7211234A (xx)
SE (1) SE377640B (xx)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268837A (en) * 1938-05-21 1942-01-06 Fides Gmbh Modulator arrangement
US3196370A (en) * 1961-05-05 1965-07-20 Rca Corp Semiconductor modulators
US3212027A (en) * 1961-10-20 1965-10-12 Research Corp Tunnel diode frequency modulator and transmitter system
US3373381A (en) * 1964-12-18 1968-03-12 Gen Electric Transmission line phase modulator
US3437957A (en) * 1966-06-28 1969-04-08 Us Air Force Microwave phase shift modulator for use with tunnel diode switching circuits
FR2075838A1 (xx) * 1969-12-16 1971-10-15 Thomson Csf

Also Published As

Publication number Publication date
FR2149283B1 (xx) 1975-02-21
US3824499A (en) 1974-07-16
DE2240515A1 (de) 1973-02-22
NL7211234A (xx) 1973-02-20
GB1395803A (en) 1975-05-29
JPS4830356A (xx) 1973-04-21
FR2149283A1 (xx) 1973-03-30

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